model_shared.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // models.c -- model loading and caching
  21
  22 // models are the only shared resource between a client and server running
  23 // on the same machine.
  24
  25 #include "quakedef.h"
  26 #include "image.h"
  27 #include "r_shadow.h"
  28 #include "polygon.h"
  29
  30 cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0", "mipmaps model skins so they render faster in the distance and do not display noise artifacts, can cause discoloration of skins if they contain undesirable border colors"};
  31 cvar_t mod_generatelightmaps_unitspersample = {CVAR_SAVE, "mod_generatelightmaps_unitspersample", "8", "lightmap resolution"};
  32 cvar_t mod_generatelightmaps_borderpixels = {CVAR_SAVE, "mod_generatelightmaps_borderpixels", "2", "extra space around polygons to prevent sampling artifacts"};
  33 cvar_t mod_generatelightmaps_texturesize = {CVAR_SAVE, "mod_generatelightmaps_texturesize", "1024", "size of lightmap textures"};
  34 cvar_t mod_generatelightmaps_lightmapsamples = {CVAR_SAVE, "mod_generatelightmaps_lightmapsamples", "16", "number of shadow tests done per lightmap pixel"};
  35 cvar_t mod_generatelightmaps_vertexsamples = {CVAR_SAVE, "mod_generatelightmaps_vertexsamples", "16", "number of shadow tests done per vertex"};
  36 cvar_t mod_generatelightmaps_gridsamples = {CVAR_SAVE, "mod_generatelightmaps_gridsamples", "64", "number of shadow tests done per lightgrid cell"};
  37 cvar_t mod_generatelightmaps_lightmapradius = {CVAR_SAVE, "mod_generatelightmaps_lightmapradius", "16", "sampling area around each lightmap pixel"};
  38 cvar_t mod_generatelightmaps_vertexradius = {CVAR_SAVE, "mod_generatelightmaps_vertexradius", "16", "sampling area around each vertex"};
  39 cvar_t mod_generatelightmaps_gridradius = {CVAR_SAVE, "mod_generatelightmaps_gridradius", "64", "sampling area around each lightgrid cell center"};
  40
  41 dp_model_t *loadmodel;
  42
  43 static mempool_t *mod_mempool;
  44 static memexpandablearray_t models;
  45
  46 static mempool_t* q3shaders_mem;
  47 typedef struct q3shader_hash_entry_s
  48 {
  49   q3shaderinfo_t shader;
  50   struct q3shader_hash_entry_s* chain;
  51 } q3shader_hash_entry_t;
  52 #define Q3SHADER_HASH_SIZE  1021
  53 typedef struct q3shader_data_s
  54 {
  55   memexpandablearray_t hash_entries;
  56   q3shader_hash_entry_t hash[Q3SHADER_HASH_SIZE];
  57   memexpandablearray_t char_ptrs;
  58 } q3shader_data_t;
  59 static q3shader_data_t* q3shader_data;
  60
  61 static void mod_start(void)
  62 {
  63         int i, count;
  64         int nummodels = Mem_ExpandableArray_IndexRange(&models);
  65         dp_model_t *mod;
  66
  67         SCR_PushLoadingScreen(false, "Loading models", 1.0);
  68         count = 0;
  69         for (i = 0;i < nummodels;i++)
  70                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
  71                         if (mod->used)
  72                                 ++count;
  73         for (i = 0;i < nummodels;i++)
  74                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
  75                         if (mod->used)
  76                         {
  77                                 SCR_PushLoadingScreen(true, mod->name, 1.0 / count);
  78                                 Mod_LoadModel(mod, true, false);
  79                                 SCR_PopLoadingScreen(false);
  80                         }
  81         SCR_PopLoadingScreen(false);
  82 }
  83
  84 static void mod_shutdown(void)
  85 {
  86         int i;
  87         int nummodels = Mem_ExpandableArray_IndexRange(&models);
  88         dp_model_t *mod;
  89
  90         for (i = 0;i < nummodels;i++)
  91                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && (mod->loaded || mod->mempool))
  92                         Mod_UnloadModel(mod);
  93
  94         Mod_FreeQ3Shaders();
  95         Mod_Skeletal_FreeBuffers();
  96 }
  97
  98 static void mod_newmap(void)
  99 {
 100         msurface_t *surface;
 101         int i, j, k, surfacenum, ssize, tsize;
 102         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 103         dp_model_t *mod;
 104
 105         for (i = 0;i < nummodels;i++)
 106         {
 107                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool)
 108                 {
 109                         for (j = 0;j < mod->num_textures && mod->data_textures;j++)
 110                         {
 111                                 for (k = 0;k < mod->data_textures[j].numskinframes;k++)
 112                                         R_SkinFrame_MarkUsed(mod->data_textures[j].skinframes[k]);
 113                                 for (k = 0;k < mod->data_textures[j].backgroundnumskinframes;k++)
 114                                         R_SkinFrame_MarkUsed(mod->data_textures[j].backgroundskinframes[k]);
 115                         }
 116                         if (mod->brush.solidskyskinframe)
 117                                 R_SkinFrame_MarkUsed(mod->brush.solidskyskinframe);
 118                         if (mod->brush.alphaskyskinframe)
 119                                 R_SkinFrame_MarkUsed(mod->brush.alphaskyskinframe);
 120                 }
 121         }
 122
 123         if (!cl_stainmaps_clearonload.integer)
 124                 return;
 125
 126         for (i = 0;i < nummodels;i++)
 127         {
 128                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool && mod->data_surfaces)
 129                 {
 130                         for (surfacenum = 0, surface = mod->data_surfaces;surfacenum < mod->num_surfaces;surfacenum++, surface++)
 131                         {
 132                                 if (surface->lightmapinfo && surface->lightmapinfo->stainsamples)
 133                                 {
 134                                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
 135                                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
 136                                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
 137                                         mod->brushq1.lightmapupdateflags[surfacenum] = true;
 138                                 }
 139                         }
 140                 }
 141         }
 142 }
 143
 144 /*
 145 ===============
 146 Mod_Init
 147 ===============
 148 */
 149 static void Mod_Print(void);
 150 static void Mod_Precache (void);
 151 static void Mod_Decompile_f(void);
 152 static void Mod_GenerateLightmaps_f(void);
 153 void Mod_Init (void)
 154 {
 155         mod_mempool = Mem_AllocPool("modelinfo", 0, NULL);
 156         Mem_ExpandableArray_NewArray(&models, mod_mempool, sizeof(dp_model_t), 16);
 157
 158         Mod_BrushInit();
 159         Mod_AliasInit();
 160         Mod_SpriteInit();
 161
 162         Cvar_RegisterVariable(&r_mipskins);
 163         Cvar_RegisterVariable(&mod_generatelightmaps_unitspersample);
 164         Cvar_RegisterVariable(&mod_generatelightmaps_borderpixels);
 165         Cvar_RegisterVariable(&mod_generatelightmaps_texturesize);
 166
 167         Cvar_RegisterVariable(&mod_generatelightmaps_lightmapsamples);
 168         Cvar_RegisterVariable(&mod_generatelightmaps_vertexsamples);
 169         Cvar_RegisterVariable(&mod_generatelightmaps_gridsamples);
 170         Cvar_RegisterVariable(&mod_generatelightmaps_lightmapradius);
 171         Cvar_RegisterVariable(&mod_generatelightmaps_vertexradius);
 172         Cvar_RegisterVariable(&mod_generatelightmaps_gridradius);
 173
 174         Cmd_AddCommand ("modellist", Mod_Print, "prints a list of loaded models");
 175         Cmd_AddCommand ("modelprecache", Mod_Precache, "load a model");
 176         Cmd_AddCommand ("modeldecompile", Mod_Decompile_f, "exports a model in several formats for editing purposes");
 177         Cmd_AddCommand ("mod_generatelightmaps", Mod_GenerateLightmaps_f, "rebuilds lighting on current worldmodel");
 178 }
 179
 180 void Mod_RenderInit(void)
 181 {
 182         R_RegisterModule("Models", mod_start, mod_shutdown, mod_newmap);
 183 }
 184
 185 void Mod_UnloadModel (dp_model_t *mod)
 186 {
 187         char name[MAX_QPATH];
 188         qboolean used;
 189         dp_model_t *parentmodel;
 190
 191         if (developer_loading.integer)
 192                 Con_Printf("unloading model %s\n", mod->name);
 193
 194         strlcpy(name, mod->name, sizeof(name));
 195         parentmodel = mod->brush.parentmodel;
 196         used = mod->used;
 197         if (mod->mempool)
 198         {
 199                 if (mod->surfmesh.vertexpositionbuffer)
 200                         R_Mesh_DestroyMeshBuffer(mod->surfmesh.vertexpositionbuffer);
 201                 mod->surfmesh.vertexpositionbuffer = NULL;
 202                 if (mod->surfmesh.vertexmeshbuffer)
 203                         R_Mesh_DestroyMeshBuffer(mod->surfmesh.vertexmeshbuffer);
 204                 mod->surfmesh.vertexmeshbuffer = NULL;
 205                 if (mod->surfmesh.data_element3i_indexbuffer)
 206                         R_Mesh_DestroyMeshBuffer(mod->surfmesh.data_element3i_indexbuffer);
 207                 mod->surfmesh.data_element3i_indexbuffer = NULL;
 208                 if (mod->surfmesh.data_element3s_indexbuffer)
 209                         R_Mesh_DestroyMeshBuffer(mod->surfmesh.data_element3s_indexbuffer);
 210                 mod->surfmesh.data_element3s_indexbuffer = NULL;
 211                 if (mod->surfmesh.vbo_vertexbuffer)
 212                         R_Mesh_DestroyMeshBuffer(mod->surfmesh.vbo_vertexbuffer);
 213                 mod->surfmesh.vbo_vertexbuffer = NULL;
 214         }
 215         // free textures/memory attached to the model
 216         R_FreeTexturePool(&mod->texturepool);
 217         Mem_FreePool(&mod->mempool);
 218         // clear the struct to make it available
 219         memset(mod, 0, sizeof(dp_model_t));
 220         // restore the fields we want to preserve
 221         strlcpy(mod->name, name, sizeof(mod->name));
 222         mod->brush.parentmodel = parentmodel;
 223         mod->used = used;
 224         mod->loaded = false;
 225 }
 226
 227 void R_Model_Null_Draw(entity_render_t *ent)
 228 {
 229         return;
 230 }
 231
 232
 233 typedef void (*mod_framegroupify_parsegroups_t) (unsigned int i, int start, int len, float fps, qboolean loop, void *pass);
 234
 235 int Mod_FrameGroupify_ParseGroups(const char *buf, mod_framegroupify_parsegroups_t cb, void *pass)
 236 {
 237         const char *bufptr;
 238         int start, len;
 239         float fps;
 240         unsigned int i;
 241         qboolean loop;
 242
 243         bufptr = buf;
 244         i = 0;
 245         for(;;)
 246         {
 247                 // an anim scene!
 248                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 249                         break;
 250                 if (!strcmp(com_token, "\n"))
 251                         continue; // empty line
 252                 start = atoi(com_token);
 253                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 254                         break;
 255                 if (!strcmp(com_token, "\n"))
 256                 {
 257                         Con_Printf("framegroups file: missing number of frames\n");
 258                         continue;
 259                 }
 260                 len = atoi(com_token);
 261                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 262                         break;
 263                 // we default to looping as it's usually wanted, so to NOT loop you append a 0
 264                 if (strcmp(com_token, "\n"))
 265                 {
 266                         fps = atof(com_token);
 267                         if (!COM_ParseToken_Simple(&bufptr, true, false))
 268                                 break;
 269                         if (strcmp(com_token, "\n"))
 270                                 loop = atoi(com_token) != 0;
 271                         else
 272                                 loop = true;
 273                 }
 274                 else
 275                 {
 276                         fps = 20;
 277                         loop = true;
 278                 }
 279
 280                 if(cb)
 281                         cb(i, start, len, fps, loop, pass);
 282                 ++i;
 283         }
 284
 285         return i;
 286 }
 287
 288 void Mod_FrameGroupify_ParseGroups_Count (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 289 {
 290         unsigned int *cnt = (unsigned int *) pass;
 291         ++*cnt;
 292 }
 293
 294 void Mod_FrameGroupify_ParseGroups_Store (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 295 {
 296         dp_model_t *mod = (dp_model_t *) pass;
 297         animscene_t *anim = &mod->animscenes[i];
 298         dpsnprintf(anim->name, sizeof(anim[i].name), "groupified_%d_anim", i);
 299         anim->firstframe = bound(0, start, mod->num_poses - 1);
 300         anim->framecount = bound(1, len, mod->num_poses - anim->firstframe);
 301         anim->framerate = max(1, fps);
 302         anim->loop = !!loop;
 303         //Con_Printf("frame group %d is %d %d %f %d\n", i, start, len, fps, loop);
 304 }
 305
 306 void Mod_FrameGroupify(dp_model_t *mod, const char *buf)
 307 {
 308         unsigned int cnt;
 309
 310         // 0. count
 311         cnt = Mod_FrameGroupify_ParseGroups(buf, NULL, NULL);
 312         if(!cnt)
 313         {
 314                 Con_Printf("no scene found in framegroups file, aborting\n");
 315                 return;
 316         }
 317         mod->numframes = cnt;
 318
 319         // 1. reallocate
 320         // (we do not free the previous animscenes, but model unloading will free the pool owning them, so it's okay)
 321         mod->animscenes = (animscene_t *) Mem_Alloc(mod->mempool, sizeof(animscene_t) * mod->numframes);
 322
 323         // 2. parse
 324         Mod_FrameGroupify_ParseGroups(buf, Mod_FrameGroupify_ParseGroups_Store, mod);
 325 }
 326
 327 void Mod_FindPotentialDeforms(dp_model_t *mod)
 328 {
 329         int i, j;
 330         texture_t *texture;
 331         mod->wantnormals = false;
 332         mod->wanttangents = false;
 333         for (i = 0;i < mod->num_textures;i++)
 334         {
 335                 texture = mod->data_textures + i;
 336                 if (texture->tcgen.tcgen == Q3TCGEN_ENVIRONMENT)
 337                         mod->wantnormals = true;
 338                 for (j = 0;j < Q3MAXDEFORMS;j++)
 339                 {
 340                         if (texture->deforms[j].deform == Q3DEFORM_AUTOSPRITE)
 341                         {
 342                                 mod->wanttangents = true;
 343                                 mod->wantnormals = true;
 344                                 break;
 345                         }
 346                         if (texture->deforms[j].deform != Q3DEFORM_NONE)
 347                                 mod->wantnormals = true;
 348                 }
 349         }
 350 }
 351
 352 /*
 353 ==================
 354 Mod_LoadModel
 355
 356 Loads a model
 357 ==================
 358 */
 359 dp_model_t *Mod_LoadModel(dp_model_t *mod, qboolean crash, qboolean checkdisk)
 360 {
 361         int num;
 362         unsigned int crc;
 363         void *buf;
 364         fs_offset_t filesize;
 365
 366         mod->used = true;
 367
 368         if (mod->name[0] == '*') // submodel
 369                 return mod;
 370
 371         if (!strcmp(mod->name, "null"))
 372         {
 373                 if(mod->loaded)
 374                         return mod;
 375
 376                 if (mod->loaded || mod->mempool)
 377                         Mod_UnloadModel(mod);
 378
 379                 if (developer_loading.integer)
 380                         Con_Printf("loading model %s\n", mod->name);
 381
 382                 mod->used = true;
 383                 mod->crc = (unsigned int)-1;
 384                 mod->loaded = false;
 385
 386                 VectorClear(mod->normalmins);
 387                 VectorClear(mod->normalmaxs);
 388                 VectorClear(mod->yawmins);
 389                 VectorClear(mod->yawmaxs);
 390                 VectorClear(mod->rotatedmins);
 391                 VectorClear(mod->rotatedmaxs);
 392
 393                 mod->modeldatatypestring = "null";
 394                 mod->type = mod_null;
 395                 mod->Draw = R_Model_Null_Draw;
 396                 mod->numframes = 2;
 397                 mod->numskins = 1;
 398
 399                 // no fatal errors occurred, so this model is ready to use.
 400                 mod->loaded = true;
 401
 402                 return mod;
 403         }
 404
 405         crc = 0;
 406         buf = NULL;
 407
 408         // even if the model is loaded it still may need reloading...
 409
 410         // if it is not loaded or checkdisk is true we need to calculate the crc
 411         if (!mod->loaded || checkdisk)
 412         {
 413                 if (checkdisk && mod->loaded)
 414                         Con_DPrintf("checking model %s\n", mod->name);
 415                 buf = FS_LoadFile (mod->name, tempmempool, false, &filesize);
 416                 if (buf)
 417                 {
 418                         crc = CRC_Block((unsigned char *)buf, filesize);
 419                         // we need to reload the model if the crc does not match
 420                         if (mod->crc != crc)
 421                                 mod->loaded = false;
 422                 }
 423         }
 424
 425         // if the model is already loaded and checks passed, just return
 426         if (mod->loaded)
 427         {
 428                 if (buf)
 429                         Mem_Free(buf);
 430                 return mod;
 431         }
 432
 433         if (developer_loading.integer)
 434                 Con_Printf("loading model %s\n", mod->name);
 435
 436         SCR_PushLoadingScreen(true, mod->name, 1);
 437
 438         // LordHavoc: unload the existing model in this slot (if there is one)
 439         if (mod->loaded || mod->mempool)
 440                 Mod_UnloadModel(mod);
 441
 442         // load the model
 443         mod->used = true;
 444         mod->crc = crc;
 445         // errors can prevent the corresponding mod->loaded = true;
 446         mod->loaded = false;
 447
 448         // default model radius and bounding box (mainly for missing models)
 449         mod->radius = 16;
 450         VectorSet(mod->normalmins, -mod->radius, -mod->radius, -mod->radius);
 451         VectorSet(mod->normalmaxs, mod->radius, mod->radius, mod->radius);
 452         VectorSet(mod->yawmins, -mod->radius, -mod->radius, -mod->radius);
 453         VectorSet(mod->yawmaxs, mod->radius, mod->radius, mod->radius);
 454         VectorSet(mod->rotatedmins, -mod->radius, -mod->radius, -mod->radius);
 455         VectorSet(mod->rotatedmaxs, mod->radius, mod->radius, mod->radius);
 456
 457         if (!q3shaders_mem)
 458         {
 459                 // load q3 shaders for the first time, or after a level change
 460                 Mod_LoadQ3Shaders();
 461         }
 462
 463         if (buf)
 464         {
 465                 char *bufend = (char *)buf + filesize;
 466
 467                 // all models use memory, so allocate a memory pool
 468                 mod->mempool = Mem_AllocPool(mod->name, 0, NULL);
 469
 470                 num = LittleLong(*((int *)buf));
 471                 // call the apropriate loader
 472                 loadmodel = mod;
 473                 if (!strcasecmp(FS_FileExtension(mod->name), "obj")) Mod_OBJ_Load(mod, buf, bufend);
 474                 else if (!memcmp(buf, "IDPO", 4)) Mod_IDP0_Load(mod, buf, bufend);
 475                 else if (!memcmp(buf, "IDP2", 4)) Mod_IDP2_Load(mod, buf, bufend);
 476                 else if (!memcmp(buf, "IDP3", 4)) Mod_IDP3_Load(mod, buf, bufend);
 477                 else if (!memcmp(buf, "IDSP", 4)) Mod_IDSP_Load(mod, buf, bufend);
 478                 else if (!memcmp(buf, "IDS2", 4)) Mod_IDS2_Load(mod, buf, bufend);
 479                 else if (!memcmp(buf, "IBSP", 4)) Mod_IBSP_Load(mod, buf, bufend);
 480                 else if (!memcmp(buf, "ZYMOTICMODEL", 12)) Mod_ZYMOTICMODEL_Load(mod, buf, bufend);
 481                 else if (!memcmp(buf, "DARKPLACESMODEL", 16)) Mod_DARKPLACESMODEL_Load(mod, buf, bufend);
 482                 else if (!memcmp(buf, "ACTRHEAD", 8)) Mod_PSKMODEL_Load(mod, buf, bufend);
 483                 else if (!memcmp(buf, "INTERQUAKEMODEL", 16)) Mod_INTERQUAKEMODEL_Load(mod, buf, bufend);
 484                 else if (strlen(mod->name) >= 4 && !strcmp(mod->name + strlen(mod->name) - 4, ".map")) Mod_MAP_Load(mod, buf, bufend);
 485                 else if (num == BSPVERSION || num == 30) Mod_Q1BSP_Load(mod, buf, bufend);
 486                 else Con_Printf("Mod_LoadModel: model \"%s\" is of unknown/unsupported type\n", mod->name);
 487                 Mem_Free(buf);
 488
 489                 Mod_FindPotentialDeforms(mod);
 490
 491                 buf = FS_LoadFile (va("%s.framegroups", mod->name), tempmempool, false, &filesize);
 492                 if(buf)
 493                 {
 494                         Mod_FrameGroupify(mod, (const char *)buf);
 495                         Mem_Free(buf);
 496                 }
 497
 498                 Mod_BuildVBOs();
 499         }
 500         else if (crash)
 501         {
 502                 // LordHavoc: Sys_Error was *ANNOYING*
 503                 Con_Printf ("Mod_LoadModel: %s not found\n", mod->name);
 504         }
 505
 506         // no fatal errors occurred, so this model is ready to use.
 507         mod->loaded = true;
 508
 509         SCR_PopLoadingScreen(false);
 510
 511         return mod;
 512 }
 513
 514 void Mod_ClearUsed(void)
 515 {
 516         int i;
 517         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 518         dp_model_t *mod;
 519         for (i = 0;i < nummodels;i++)
 520                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0])
 521                         mod->used = false;
 522 }
 523
 524 void Mod_PurgeUnused(void)
 525 {
 526         int i;
 527         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 528         dp_model_t *mod;
 529         for (i = 0;i < nummodels;i++)
 530         {
 531                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && !mod->used)
 532                 {
 533                         Mod_UnloadModel(mod);
 534                         Mem_ExpandableArray_FreeRecord(&models, mod);
 535                 }
 536         }
 537 }
 538
 539 /*
 540 ==================
 541 Mod_FindName
 542
 543 ==================
 544 */
 545 dp_model_t *Mod_FindName(const char *name, const char *parentname)
 546 {
 547         int i;
 548         int nummodels;
 549         dp_model_t *mod;
 550
 551         if (!parentname)
 552                 parentname = "";
 553
 554         // if we're not dedicatd, the renderer calls will crash without video
 555         Host_StartVideo();
 556
 557         nummodels = Mem_ExpandableArray_IndexRange(&models);
 558
 559         if (!name[0])
 560                 Host_Error ("Mod_ForName: NULL name");
 561
 562         // search the currently loaded models
 563         for (i = 0;i < nummodels;i++)
 564         {
 565                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && !strcmp(mod->name, name) && ((!mod->brush.parentmodel && !parentname[0]) || (mod->brush.parentmodel && parentname[0] && !strcmp(mod->brush.parentmodel->name, parentname))))
 566                 {
 567                         mod->used = true;
 568                         return mod;
 569                 }
 570         }
 571
 572         // no match found, create a new one
 573         mod = (dp_model_t *) Mem_ExpandableArray_AllocRecord(&models);
 574         strlcpy(mod->name, name, sizeof(mod->name));
 575         if (parentname[0])
 576                 mod->brush.parentmodel = Mod_FindName(parentname, NULL);
 577         else
 578                 mod->brush.parentmodel = NULL;
 579         mod->loaded = false;
 580         mod->used = true;
 581         return mod;
 582 }
 583
 584 /*
 585 ==================
 586 Mod_ForName
 587
 588 Loads in a model for the given name
 589 ==================
 590 */
 591 dp_model_t *Mod_ForName(const char *name, qboolean crash, qboolean checkdisk, const char *parentname)
 592 {
 593         dp_model_t *model;
 594         model = Mod_FindName(name, parentname);
 595         if (!model->loaded || checkdisk)
 596                 Mod_LoadModel(model, crash, checkdisk);
 597         return model;
 598 }
 599
 600 /*
 601 ==================
 602 Mod_Reload
 603
 604 Reloads all models if they have changed
 605 ==================
 606 */
 607 void Mod_Reload(void)
 608 {
 609         int i, count;
 610         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 611         dp_model_t *mod;
 612
 613         SCR_PushLoadingScreen(false, "Reloading models", 1.0);
 614         count = 0;
 615         for (i = 0;i < nummodels;i++)
 616                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 617                         ++count;
 618         for (i = 0;i < nummodels;i++)
 619                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 620                 {
 621                         SCR_PushLoadingScreen(true, mod->name, 1.0 / count);
 622                         Mod_LoadModel(mod, true, true);
 623                         SCR_PopLoadingScreen(false);
 624                 }
 625         SCR_PopLoadingScreen(false);
 626 }
 627
 628 unsigned char *mod_base;
 629
 630
 631 //=============================================================================
 632
 633 /*
 634 ================
 635 Mod_Print
 636 ================
 637 */
 638 static void Mod_Print(void)
 639 {
 640         int i;
 641         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 642         dp_model_t *mod;
 643
 644         Con_Print("Loaded models:\n");
 645         for (i = 0;i < nummodels;i++)
 646         {
 647                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
 648                 {
 649                         if (mod->brush.numsubmodels)
 650                                 Con_Printf("%4iK %s (%i submodels)\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name, mod->brush.numsubmodels);
 651                         else
 652                                 Con_Printf("%4iK %s\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name);
 653                 }
 654         }
 655 }
 656
 657 /*
 658 ================
 659 Mod_Precache
 660 ================
 661 */
 662 static void Mod_Precache(void)
 663 {
 664         if (Cmd_Argc() == 2)
 665                 Mod_ForName(Cmd_Argv(1), false, true, Cmd_Argv(1)[0] == '*' ? cl.model_name[1] : NULL);
 666         else
 667                 Con_Print("usage: modelprecache <filename>\n");
 668 }
 669
 670 int Mod_BuildVertexRemapTableFromElements(int numelements, const int *elements, int numvertices, int *remapvertices)
 671 {
 672         int i, count;
 673         unsigned char *used;
 674         used = (unsigned char *)Mem_Alloc(tempmempool, numvertices);
 675         memset(used, 0, numvertices);
 676         for (i = 0;i < numelements;i++)
 677                 used[elements[i]] = 1;
 678         for (i = 0, count = 0;i < numvertices;i++)
 679                 remapvertices[i] = used[i] ? count++ : -1;
 680         Mem_Free(used);
 681         return count;
 682 }
 683
 684 #if 1
 685 // fast way, using an edge hash
 686 #define TRIANGLEEDGEHASH 8192
 687 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 688 {
 689         int i, j, p, e1, e2, *n, hashindex, count, match;
 690         const int *e;
 691         typedef struct edgehashentry_s
 692         {
 693                 struct edgehashentry_s *next;
 694                 int triangle;
 695                 int element[2];
 696         }
 697         edgehashentry_t;
 698         static edgehashentry_t **edgehash;
 699         edgehashentry_t *edgehashentries, *hash;
 700         if (!numtriangles)
 701                 return;
 702         edgehash = Mem_Alloc(tempmempool, TRIANGLEEDGEHASH * sizeof(*edgehash));
 703         // if there are too many triangles for the stack array, allocate larger buffer
 704         edgehashentries = (edgehashentry_t *)Mem_Alloc(tempmempool, numtriangles * 3 * sizeof(edgehashentry_t));
 705         // find neighboring triangles
 706         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 707         {
 708                 for (j = 0, p = 2;j < 3;p = j, j++)
 709                 {
 710                         e1 = e[p];
 711                         e2 = e[j];
 712                         // this hash index works for both forward and backward edges
 713                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 714                         hash = edgehashentries + i * 3 + j;
 715                         hash->next = edgehash[hashindex];
 716                         edgehash[hashindex] = hash;
 717                         hash->triangle = i;
 718                         hash->element[0] = e1;
 719                         hash->element[1] = e2;
 720                 }
 721         }
 722         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 723         {
 724                 for (j = 0, p = 2;j < 3;p = j, j++)
 725                 {
 726                         e1 = e[p];
 727                         e2 = e[j];
 728                         // this hash index works for both forward and backward edges
 729                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 730                         count = 0;
 731                         match = -1;
 732                         for (hash = edgehash[hashindex];hash;hash = hash->next)
 733                         {
 734                                 if (hash->element[0] == e2 && hash->element[1] == e1)
 735                                 {
 736                                         if (hash->triangle != i)
 737                                                 match = hash->triangle;
 738                                         count++;
 739                                 }
 740                                 else if ((hash->element[0] == e1 && hash->element[1] == e2))
 741                                         count++;
 742                         }
 743                         // detect edges shared by three triangles and make them seams
 744                         if (count > 2)
 745                                 match = -1;
 746                         n[p] = match;
 747                 }
 748
 749                 // also send a keepalive here (this can take a while too!)
 750                 CL_KeepaliveMessage(false);
 751         }
 752         // free the allocated buffer
 753         Mem_Free(edgehashentries);
 754         Mem_Free(edgehash);
 755 }
 756 #else
 757 // very slow but simple way
 758 static int Mod_FindTriangleWithEdge(const int *elements, int numtriangles, int start, int end, int ignore)
 759 {
 760         int i, match, count;
 761         count = 0;
 762         match = -1;
 763         for (i = 0;i < numtriangles;i++, elements += 3)
 764         {
 765                      if ((elements[0] == start && elements[1] == end)
 766                       || (elements[1] == start && elements[2] == end)
 767                       || (elements[2] == start && elements[0] == end))
 768                 {
 769                         if (i != ignore)
 770                                 match = i;
 771                         count++;
 772                 }
 773                 else if ((elements[1] == start && elements[0] == end)
 774                       || (elements[2] == start && elements[1] == end)
 775                       || (elements[0] == start && elements[2] == end))
 776                         count++;
 777         }
 778         // detect edges shared by three triangles and make them seams
 779         if (count > 2)
 780                 match = -1;
 781         return match;
 782 }
 783
 784 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 785 {
 786         int i, *n;
 787         const int *e;
 788         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 789         {
 790                 n[0] = Mod_FindTriangleWithEdge(elements, numtriangles, e[1], e[0], i);
 791                 n[1] = Mod_FindTriangleWithEdge(elements, numtriangles, e[2], e[1], i);
 792                 n[2] = Mod_FindTriangleWithEdge(elements, numtriangles, e[0], e[2], i);
 793         }
 794 }
 795 #endif
 796
 797 void Mod_ValidateElements(int *elements, int numtriangles, int firstvertex, int numverts, const char *filename, int fileline)
 798 {
 799         int i, warned = false, endvertex = firstvertex + numverts;
 800         for (i = 0;i < numtriangles * 3;i++)
 801         {
 802                 if (elements[i] < firstvertex || elements[i] >= endvertex)
 803                 {
 804                         if (!warned)
 805                         {
 806                                 warned = true;
 807                                 Con_Printf("Mod_ValidateElements: out of bounds elements detected at %s:%d\n", filename, fileline);
 808                         }
 809                         elements[i] = firstvertex;
 810                 }
 811         }
 812 }
 813
 814 // warning: this is an expensive function!
 815 void Mod_BuildNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const int *elements, float *normal3f, qboolean areaweighting)
 816 {
 817         int i, j;
 818         const int *element;
 819         float *vectorNormal;
 820         float areaNormal[3];
 821         // clear the vectors
 822         memset(normal3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 823         // process each vertex of each triangle and accumulate the results
 824         // use area-averaging, to make triangles with a big area have a bigger
 825         // weighting on the vertex normal than triangles with a small area
 826         // to do so, just add the 'normals' together (the bigger the area
 827         // the greater the length of the normal is
 828         element = elements;
 829         for (i = 0; i < numtriangles; i++, element += 3)
 830         {
 831                 TriangleNormal(
 832                         vertex3f + element[0] * 3,
 833                         vertex3f + element[1] * 3,
 834                         vertex3f + element[2] * 3,
 835                         areaNormal
 836                         );
 837
 838                 if (!areaweighting)
 839                         VectorNormalize(areaNormal);
 840
 841                 for (j = 0;j < 3;j++)
 842                 {
 843                         vectorNormal = normal3f + element[j] * 3;
 844                         vectorNormal[0] += areaNormal[0];
 845                         vectorNormal[1] += areaNormal[1];
 846                         vectorNormal[2] += areaNormal[2];
 847                 }
 848         }
 849         // and just normalize the accumulated vertex normal in the end
 850         vectorNormal = normal3f + 3 * firstvertex;
 851         for (i = 0; i < numvertices; i++, vectorNormal += 3)
 852                 VectorNormalize(vectorNormal);
 853 }
 854
 855 void Mod_BuildBumpVectors(const float *v0, const float *v1, const float *v2, const float *tc0, const float *tc1, const float *tc2, float *svector3f, float *tvector3f, float *normal3f)
 856 {
 857         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 858         // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 859         // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 860
 861         // 6 multiply, 9 subtract
 862         VectorSubtract(v1, v0, v10);
 863         VectorSubtract(v2, v0, v20);
 864         normal3f[0] = v20[1] * v10[2] - v20[2] * v10[1];
 865         normal3f[1] = v20[2] * v10[0] - v20[0] * v10[2];
 866         normal3f[2] = v20[0] * v10[1] - v20[1] * v10[0];
 867         // 12 multiply, 10 subtract
 868         tc10[1] = tc1[1] - tc0[1];
 869         tc20[1] = tc2[1] - tc0[1];
 870         svector3f[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 871         svector3f[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 872         svector3f[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 873         tc10[0] = tc1[0] - tc0[0];
 874         tc20[0] = tc2[0] - tc0[0];
 875         tvector3f[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 876         tvector3f[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 877         tvector3f[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 878         // 12 multiply, 4 add, 6 subtract
 879         f = DotProduct(svector3f, normal3f);
 880         svector3f[0] -= f * normal3f[0];
 881         svector3f[1] -= f * normal3f[1];
 882         svector3f[2] -= f * normal3f[2];
 883         f = DotProduct(tvector3f, normal3f);
 884         tvector3f[0] -= f * normal3f[0];
 885         tvector3f[1] -= f * normal3f[1];
 886         tvector3f[2] -= f * normal3f[2];
 887         // if texture is mapped the wrong way (counterclockwise), the tangents
 888         // have to be flipped, this is detected by calculating a normal from the
 889         // two tangents, and seeing if it is opposite the surface normal
 890         // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 891         CrossProduct(tvector3f, svector3f, tangentcross);
 892         if (DotProduct(tangentcross, normal3f) < 0)
 893         {
 894                 VectorNegate(svector3f, svector3f);
 895                 VectorNegate(tvector3f, tvector3f);
 896         }
 897 }
 898
 899 // warning: this is a very expensive function!
 900 void Mod_BuildTextureVectorsFromNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const float *texcoord2f, const float *normal3f, const int *elements, float *svector3f, float *tvector3f, qboolean areaweighting)
 901 {
 902         int i, tnum;
 903         float sdir[3], tdir[3], normal[3], *sv, *tv;
 904         const float *v0, *v1, *v2, *tc0, *tc1, *tc2, *n;
 905         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 906         const int *e;
 907         // clear the vectors
 908         memset(svector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 909         memset(tvector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 910         // process each vertex of each triangle and accumulate the results
 911         for (tnum = 0, e = elements;tnum < numtriangles;tnum++, e += 3)
 912         {
 913                 v0 = vertex3f + e[0] * 3;
 914                 v1 = vertex3f + e[1] * 3;
 915                 v2 = vertex3f + e[2] * 3;
 916                 tc0 = texcoord2f + e[0] * 2;
 917                 tc1 = texcoord2f + e[1] * 2;
 918                 tc2 = texcoord2f + e[2] * 2;
 919
 920                 // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 921                 // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 922
 923                 // calculate the edge directions and surface normal
 924                 // 6 multiply, 9 subtract
 925                 VectorSubtract(v1, v0, v10);
 926                 VectorSubtract(v2, v0, v20);
 927                 normal[0] = v20[1] * v10[2] - v20[2] * v10[1];
 928                 normal[1] = v20[2] * v10[0] - v20[0] * v10[2];
 929                 normal[2] = v20[0] * v10[1] - v20[1] * v10[0];
 930
 931                 // calculate the tangents
 932                 // 12 multiply, 10 subtract
 933                 tc10[1] = tc1[1] - tc0[1];
 934                 tc20[1] = tc2[1] - tc0[1];
 935                 sdir[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 936                 sdir[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 937                 sdir[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 938                 tc10[0] = tc1[0] - tc0[0];
 939                 tc20[0] = tc2[0] - tc0[0];
 940                 tdir[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 941                 tdir[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 942                 tdir[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 943
 944                 // if texture is mapped the wrong way (counterclockwise), the tangents
 945                 // have to be flipped, this is detected by calculating a normal from the
 946                 // two tangents, and seeing if it is opposite the surface normal
 947                 // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 948                 CrossProduct(tdir, sdir, tangentcross);
 949                 if (DotProduct(tangentcross, normal) < 0)
 950                 {
 951                         VectorNegate(sdir, sdir);
 952                         VectorNegate(tdir, tdir);
 953                 }
 954
 955                 if (!areaweighting)
 956                 {
 957                         VectorNormalize(sdir);
 958                         VectorNormalize(tdir);
 959                 }
 960                 for (i = 0;i < 3;i++)
 961                 {
 962                         VectorAdd(svector3f + e[i]*3, sdir, svector3f + e[i]*3);
 963                         VectorAdd(tvector3f + e[i]*3, tdir, tvector3f + e[i]*3);
 964                 }
 965         }
 966         // make the tangents completely perpendicular to the surface normal, and
 967         // then normalize them
 968         // 16 assignments, 2 divide, 2 sqrt, 2 negates, 14 adds, 24 multiplies
 969         for (i = 0, sv = svector3f + 3 * firstvertex, tv = tvector3f + 3 * firstvertex, n = normal3f + 3 * firstvertex;i < numvertices;i++, sv += 3, tv += 3, n += 3)
 970         {
 971                 f = -DotProduct(sv, n);
 972                 VectorMA(sv, f, n, sv);
 973                 VectorNormalize(sv);
 974                 f = -DotProduct(tv, n);
 975                 VectorMA(tv, f, n, tv);
 976                 VectorNormalize(tv);
 977         }
 978 }
 979
 980 void Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriangles, qboolean lightmapoffsets, qboolean vertexcolors, qboolean neighbors)
 981 {
 982         unsigned char *data;
 983         data = (unsigned char *)Mem_Alloc(mempool, numvertices * (3 + 3 + 3 + 3 + 2 + 2 + (vertexcolors ? 4 : 0)) * sizeof(float) + numvertices * (lightmapoffsets ? 1 : 0) * sizeof(int) + numtriangles * (3 + (neighbors ? 3 : 0)) * sizeof(int) + (numvertices <= 65536 ? numtriangles * sizeof(unsigned short[3]) : 0));
 984         loadmodel->surfmesh.num_vertices = numvertices;
 985         loadmodel->surfmesh.num_triangles = numtriangles;
 986         if (loadmodel->surfmesh.num_vertices)
 987         {
 988                 loadmodel->surfmesh.data_vertex3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 989                 loadmodel->surfmesh.data_svector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 990                 loadmodel->surfmesh.data_tvector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 991                 loadmodel->surfmesh.data_normal3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 992                 loadmodel->surfmesh.data_texcoordtexture2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 993                 loadmodel->surfmesh.data_texcoordlightmap2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 994                 if (vertexcolors)
 995                         loadmodel->surfmesh.data_lightmapcolor4f = (float *)data, data += sizeof(float[4]) * loadmodel->surfmesh.num_vertices;
 996                 if (lightmapoffsets)
 997                         loadmodel->surfmesh.data_lightmapoffsets = (int *)data, data += sizeof(int) * loadmodel->surfmesh.num_vertices;
 998         }
 999         if (loadmodel->surfmesh.num_triangles)
1000         {
1001                 loadmodel->surfmesh.data_element3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
1002                 if (neighbors)
1003                         loadmodel->surfmesh.data_neighbor3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
1004                 if (loadmodel->surfmesh.num_vertices <= 65536)
1005                         loadmodel->surfmesh.data_element3s = (unsigned short *)data, data += sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles;
1006         }
1007 }
1008
1009 shadowmesh_t *Mod_ShadowMesh_Alloc(mempool_t *mempool, int maxverts, int maxtriangles, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, int light, int neighbors, int expandable)
1010 {
1011         shadowmesh_t *newmesh;
1012         unsigned char *data;
1013         int size;
1014         size = sizeof(shadowmesh_t);
1015         size += maxverts * sizeof(float[3]);
1016         if (light)
1017                 size += maxverts * sizeof(float[11]);
1018         size += maxtriangles * sizeof(int[3]);
1019         if (maxverts <= 65536)
1020                 size += maxtriangles * sizeof(unsigned short[3]);
1021         if (neighbors)
1022                 size += maxtriangles * sizeof(int[3]);
1023         if (expandable)
1024                 size += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *) + maxverts * sizeof(shadowmeshvertexhash_t);
1025         data = (unsigned char *)Mem_Alloc(mempool, size);
1026         newmesh = (shadowmesh_t *)data;data += sizeof(*newmesh);
1027         newmesh->map_diffuse = map_diffuse;
1028         newmesh->map_specular = map_specular;
1029         newmesh->map_normal = map_normal;
1030         newmesh->maxverts = maxverts;
1031         newmesh->maxtriangles = maxtriangles;
1032         newmesh->numverts = 0;
1033         newmesh->numtriangles = 0;
1034         memset(newmesh->sideoffsets, 0, sizeof(newmesh->sideoffsets));
1035         memset(newmesh->sidetotals, 0, sizeof(newmesh->sidetotals));
1036
1037         newmesh->vertex3f = (float *)data;data += maxverts * sizeof(float[3]);
1038         if (light)
1039         {
1040                 newmesh->svector3f = (float *)data;data += maxverts * sizeof(float[3]);
1041                 newmesh->tvector3f = (float *)data;data += maxverts * sizeof(float[3]);
1042                 newmesh->normal3f = (float *)data;data += maxverts * sizeof(float[3]);
1043                 newmesh->texcoord2f = (float *)data;data += maxverts * sizeof(float[2]);
1044         }
1045         newmesh->element3i = (int *)data;data += maxtriangles * sizeof(int[3]);
1046         if (neighbors)
1047         {
1048                 newmesh->neighbor3i = (int *)data;data += maxtriangles * sizeof(int[3]);
1049         }
1050         if (expandable)
1051         {
1052                 newmesh->vertexhashtable = (shadowmeshvertexhash_t **)data;data += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *);
1053                 newmesh->vertexhashentries = (shadowmeshvertexhash_t *)data;data += maxverts * sizeof(shadowmeshvertexhash_t);
1054         }
1055         if (maxverts <= 65536)
1056                 newmesh->element3s = (unsigned short *)data;data += maxtriangles * sizeof(unsigned short[3]);
1057         return newmesh;
1058 }
1059
1060 shadowmesh_t *Mod_ShadowMesh_ReAlloc(mempool_t *mempool, shadowmesh_t *oldmesh, int light, int neighbors)
1061 {
1062         shadowmesh_t *newmesh;
1063         newmesh = Mod_ShadowMesh_Alloc(mempool, oldmesh->numverts, oldmesh->numtriangles, oldmesh->map_diffuse, oldmesh->map_specular, oldmesh->map_normal, light, neighbors, false);
1064         newmesh->numverts = oldmesh->numverts;
1065         newmesh->numtriangles = oldmesh->numtriangles;
1066         memcpy(newmesh->sideoffsets, oldmesh->sideoffsets, sizeof(oldmesh->sideoffsets));
1067         memcpy(newmesh->sidetotals, oldmesh->sidetotals, sizeof(oldmesh->sidetotals));
1068
1069         memcpy(newmesh->vertex3f, oldmesh->vertex3f, oldmesh->numverts * sizeof(float[3]));
1070         if (newmesh->svector3f && oldmesh->svector3f)
1071         {
1072                 memcpy(newmesh->svector3f, oldmesh->svector3f, oldmesh->numverts * sizeof(float[3]));
1073                 memcpy(newmesh->tvector3f, oldmesh->tvector3f, oldmesh->numverts * sizeof(float[3]));
1074                 memcpy(newmesh->normal3f, oldmesh->normal3f, oldmesh->numverts * sizeof(float[3]));
1075                 memcpy(newmesh->texcoord2f, oldmesh->texcoord2f, oldmesh->numverts * sizeof(float[2]));
1076         }
1077         memcpy(newmesh->element3i, oldmesh->element3i, oldmesh->numtriangles * sizeof(int[3]));
1078         if (newmesh->neighbor3i && oldmesh->neighbor3i)
1079                 memcpy(newmesh->neighbor3i, oldmesh->neighbor3i, oldmesh->numtriangles * sizeof(int[3]));
1080         return newmesh;
1081 }
1082
1083 int Mod_ShadowMesh_AddVertex(shadowmesh_t *mesh, float *vertex14f)
1084 {
1085         int hashindex, vnum;
1086         shadowmeshvertexhash_t *hash;
1087         // this uses prime numbers intentionally
1088         hashindex = (unsigned int) (vertex14f[0] * 2003 + vertex14f[1] * 4001 + vertex14f[2] * 7919) % SHADOWMESHVERTEXHASH;
1089         for (hash = mesh->vertexhashtable[hashindex];hash;hash = hash->next)
1090         {
1091                 vnum = (hash - mesh->vertexhashentries);
1092                 if ((mesh->vertex3f == NULL || (mesh->vertex3f[vnum * 3 + 0] == vertex14f[0] && mesh->vertex3f[vnum * 3 + 1] == vertex14f[1] && mesh->vertex3f[vnum * 3 + 2] == vertex14f[2]))
1093                  && (mesh->svector3f == NULL || (mesh->svector3f[vnum * 3 + 0] == vertex14f[3] && mesh->svector3f[vnum * 3 + 1] == vertex14f[4] && mesh->svector3f[vnum * 3 + 2] == vertex14f[5]))
1094                  && (mesh->tvector3f == NULL || (mesh->tvector3f[vnum * 3 + 0] == vertex14f[6] && mesh->tvector3f[vnum * 3 + 1] == vertex14f[7] && mesh->tvector3f[vnum * 3 + 2] == vertex14f[8]))
1095                  && (mesh->normal3f == NULL || (mesh->normal3f[vnum * 3 + 0] == vertex14f[9] && mesh->normal3f[vnum * 3 + 1] == vertex14f[10] && mesh->normal3f[vnum * 3 + 2] == vertex14f[11]))
1096                  && (mesh->texcoord2f == NULL || (mesh->texcoord2f[vnum * 2 + 0] == vertex14f[12] && mesh->texcoord2f[vnum * 2 + 1] == vertex14f[13])))
1097                         return hash - mesh->vertexhashentries;
1098         }
1099         vnum = mesh->numverts++;
1100         hash = mesh->vertexhashentries + vnum;
1101         hash->next = mesh->vertexhashtable[hashindex];
1102         mesh->vertexhashtable[hashindex] = hash;
1103         if (mesh->vertex3f) {mesh->vertex3f[vnum * 3 + 0] = vertex14f[0];mesh->vertex3f[vnum * 3 + 1] = vertex14f[1];mesh->vertex3f[vnum * 3 + 2] = vertex14f[2];}
1104         if (mesh->svector3f) {mesh->svector3f[vnum * 3 + 0] = vertex14f[3];mesh->svector3f[vnum * 3 + 1] = vertex14f[4];mesh->svector3f[vnum * 3 + 2] = vertex14f[5];}
1105         if (mesh->tvector3f) {mesh->tvector3f[vnum * 3 + 0] = vertex14f[6];mesh->tvector3f[vnum * 3 + 1] = vertex14f[7];mesh->tvector3f[vnum * 3 + 2] = vertex14f[8];}
1106         if (mesh->normal3f) {mesh->normal3f[vnum * 3 + 0] = vertex14f[9];mesh->normal3f[vnum * 3 + 1] = vertex14f[10];mesh->normal3f[vnum * 3 + 2] = vertex14f[11];}
1107         if (mesh->texcoord2f) {mesh->texcoord2f[vnum * 2 + 0] = vertex14f[12];mesh->texcoord2f[vnum * 2 + 1] = vertex14f[13];}
1108         return vnum;
1109 }
1110
1111 void Mod_ShadowMesh_AddTriangle(mempool_t *mempool, shadowmesh_t *mesh, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, float *vertex14f)
1112 {
1113         if (mesh->numtriangles == 0)
1114         {
1115                 // set the properties on this empty mesh to be more favorable...
1116                 // (note: this case only occurs for the first triangle added to a new mesh chain)
1117                 mesh->map_diffuse = map_diffuse;
1118                 mesh->map_specular = map_specular;
1119                 mesh->map_normal = map_normal;
1120         }
1121         while (mesh->map_diffuse != map_diffuse || mesh->map_specular != map_specular || mesh->map_normal != map_normal || mesh->numverts + 3 > mesh->maxverts || mesh->numtriangles + 1 > mesh->maxtriangles)
1122         {
1123                 if (mesh->next == NULL)
1124                         mesh->next = Mod_ShadowMesh_Alloc(mempool, max(mesh->maxverts, 300), max(mesh->maxtriangles, 100), map_diffuse, map_specular, map_normal, mesh->svector3f != NULL, mesh->neighbor3i != NULL, true);
1125                 mesh = mesh->next;
1126         }
1127         mesh->element3i[mesh->numtriangles * 3 + 0] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 0);
1128         mesh->element3i[mesh->numtriangles * 3 + 1] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 1);
1129         mesh->element3i[mesh->numtriangles * 3 + 2] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 2);
1130         mesh->numtriangles++;
1131 }
1132
1133 void Mod_ShadowMesh_AddMesh(mempool_t *mempool, shadowmesh_t *mesh, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, const float *vertex3f, const float *svector3f, const float *tvector3f, const float *normal3f, const float *texcoord2f, int numtris, const int *element3i)
1134 {
1135         int i, j, e;
1136         float vbuf[3*14], *v;
1137         memset(vbuf, 0, sizeof(vbuf));
1138         for (i = 0;i < numtris;i++)
1139         {
1140                 for (j = 0, v = vbuf;j < 3;j++, v += 14)
1141                 {
1142                         e = *element3i++;
1143                         if (vertex3f)
1144                         {
1145                                 v[0] = vertex3f[e * 3 + 0];
1146                                 v[1] = vertex3f[e * 3 + 1];
1147                                 v[2] = vertex3f[e * 3 + 2];
1148                         }
1149                         if (svector3f)
1150                         {
1151                                 v[3] = svector3f[e * 3 + 0];
1152                                 v[4] = svector3f[e * 3 + 1];
1153                                 v[5] = svector3f[e * 3 + 2];
1154                         }
1155                         if (tvector3f)
1156                         {
1157                                 v[6] = tvector3f[e * 3 + 0];
1158                                 v[7] = tvector3f[e * 3 + 1];
1159                                 v[8] = tvector3f[e * 3 + 2];
1160                         }
1161                         if (normal3f)
1162                         {
1163                                 v[9] = normal3f[e * 3 + 0];
1164                                 v[10] = normal3f[e * 3 + 1];
1165                                 v[11] = normal3f[e * 3 + 2];
1166                         }
1167                         if (texcoord2f)
1168                         {
1169                                 v[12] = texcoord2f[e * 2 + 0];
1170                                 v[13] = texcoord2f[e * 2 + 1];
1171                         }
1172                 }
1173                 Mod_ShadowMesh_AddTriangle(mempool, mesh, map_diffuse, map_specular, map_normal, vbuf);
1174         }
1175
1176         // the triangle calculation can take a while, so let's do a keepalive here
1177         CL_KeepaliveMessage(false);
1178 }
1179
1180 shadowmesh_t *Mod_ShadowMesh_Begin(mempool_t *mempool, int maxverts, int maxtriangles, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, int light, int neighbors, int expandable)
1181 {
1182         // the preparation before shadow mesh initialization can take a while, so let's do a keepalive here
1183         CL_KeepaliveMessage(false);
1184
1185         return Mod_ShadowMesh_Alloc(mempool, maxverts, maxtriangles, map_diffuse, map_specular, map_normal, light, neighbors, expandable);
1186 }
1187
1188 static void Mod_ShadowMesh_CreateVBOs(shadowmesh_t *mesh)
1189 {
1190         if (!mesh->numverts)
1191                 return;
1192
1193         // build r_vertexmesh_t array
1194         // (compressed interleaved array for faster rendering)
1195         if (!mesh->vertexmesh && mesh->texcoord2f)
1196         {
1197                 int vertexindex;
1198                 int numvertices = mesh->numverts;
1199                 r_vertexmesh_t *vertexmesh;
1200                 mesh->vertexmesh = vertexmesh = (r_vertexmesh_t*)Mem_Alloc(loadmodel->mempool, numvertices * sizeof(*mesh->vertexmesh));
1201                 for (vertexindex = 0;vertexindex < numvertices;vertexindex++, vertexmesh++)
1202                 {
1203                         VectorCopy(mesh->vertex3f + 3*vertexindex, vertexmesh->vertex3f);
1204                         VectorScale(mesh->svector3f + 3*vertexindex, 1.0f, vertexmesh->svector3f);
1205                         VectorScale(mesh->tvector3f + 3*vertexindex, 1.0f, vertexmesh->tvector3f);
1206                         VectorScale(mesh->normal3f + 3*vertexindex, 1.0f, vertexmesh->normal3f);
1207                         Vector2Copy(mesh->texcoord2f + 2*vertexindex, vertexmesh->texcoordtexture2f);
1208                 }
1209         }
1210
1211         // build r_vertexposition_t array
1212         if (!mesh->vertexposition)
1213         {
1214                 int vertexindex;
1215                 int numvertices = mesh->numverts;
1216                 r_vertexposition_t *vertexposition;
1217                 mesh->vertexposition = vertexposition = (r_vertexposition_t*)Mem_Alloc(loadmodel->mempool, numvertices * sizeof(*mesh->vertexposition));
1218                 for (vertexindex = 0;vertexindex < numvertices;vertexindex++, vertexposition++)
1219                         VectorCopy(mesh->vertex3f + 3*vertexindex, vertexposition->vertex3f);
1220         }
1221
1222         // upload r_vertexmesh_t array as a buffer
1223         if (mesh->vertexmesh && !mesh->vertexmeshbuffer)
1224                 mesh->vertexmeshbuffer = R_Mesh_CreateMeshBuffer(mesh->vertexmesh, mesh->numverts * sizeof(*mesh->vertexmesh), loadmodel->name, false, false);
1225
1226         // upload r_vertexposition_t array as a buffer
1227         if (mesh->vertexposition && !mesh->vertexpositionbuffer)
1228                 mesh->vertexpositionbuffer = R_Mesh_CreateMeshBuffer(mesh->vertexposition, mesh->numverts * sizeof(*mesh->vertexposition), loadmodel->name, false, false);
1229
1230         // upload short indices as a buffer
1231         if (mesh->element3s && !mesh->element3s_indexbuffer)
1232                 mesh->element3s_indexbuffer = R_Mesh_CreateMeshBuffer(mesh->element3s, mesh->numtriangles * sizeof(short[3]), loadmodel->name, true, false);
1233
1234         // upload int indices as a buffer
1235         if (mesh->element3i && !mesh->element3i_indexbuffer && !mesh->element3s)
1236                 mesh->element3i_indexbuffer = R_Mesh_CreateMeshBuffer(mesh->element3i, mesh->numtriangles * sizeof(int[3]), loadmodel->name, true, false);
1237
1238         // vertex buffer is several arrays and we put them in the same buffer
1239         //
1240         // is this wise?  the texcoordtexture2f array is used with dynamic
1241         // vertex/svector/tvector/normal when rendering animated models, on the
1242         // other hand animated models don't use a lot of vertices anyway...
1243         if (!mesh->vbo_vertexbuffer)
1244         {
1245                 size_t size;
1246                 unsigned char *mem;
1247                 size = 0;
1248                 mesh->vbooffset_vertex3f           = size;if (mesh->vertex3f          ) size += mesh->numverts * sizeof(float[3]);
1249                 mesh->vbooffset_svector3f          = size;if (mesh->svector3f         ) size += mesh->numverts * sizeof(float[3]);
1250                 mesh->vbooffset_tvector3f          = size;if (mesh->tvector3f         ) size += mesh->numverts * sizeof(float[3]);
1251                 mesh->vbooffset_normal3f           = size;if (mesh->normal3f          ) size += mesh->numverts * sizeof(float[3]);
1252                 mesh->vbooffset_texcoord2f         = size;if (mesh->texcoord2f        ) size += mesh->numverts * sizeof(float[2]);
1253                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
1254                 if (mesh->vertex3f          ) memcpy(mem + mesh->vbooffset_vertex3f          , mesh->vertex3f          , mesh->numverts * sizeof(float[3]));
1255                 if (mesh->svector3f         ) memcpy(mem + mesh->vbooffset_svector3f         , mesh->svector3f         , mesh->numverts * sizeof(float[3]));
1256                 if (mesh->tvector3f         ) memcpy(mem + mesh->vbooffset_tvector3f         , mesh->tvector3f         , mesh->numverts * sizeof(float[3]));
1257                 if (mesh->normal3f          ) memcpy(mem + mesh->vbooffset_normal3f          , mesh->normal3f          , mesh->numverts * sizeof(float[3]));
1258                 if (mesh->texcoord2f        ) memcpy(mem + mesh->vbooffset_texcoord2f        , mesh->texcoord2f        , mesh->numverts * sizeof(float[2]));
1259                 mesh->vbo_vertexbuffer = R_Mesh_CreateMeshBuffer(mem, size, "shadowmesh", false, false);
1260                 Mem_Free(mem);
1261         }
1262 }
1263
1264 shadowmesh_t *Mod_ShadowMesh_Finish(mempool_t *mempool, shadowmesh_t *firstmesh, qboolean light, qboolean neighbors, qboolean createvbo)
1265 {
1266         shadowmesh_t *mesh, *newmesh, *nextmesh;
1267         // reallocate meshs to conserve space
1268         for (mesh = firstmesh, firstmesh = NULL;mesh;mesh = nextmesh)
1269         {
1270                 nextmesh = mesh->next;
1271                 if (mesh->numverts >= 3 && mesh->numtriangles >= 1)
1272                 {
1273                         newmesh = Mod_ShadowMesh_ReAlloc(mempool, mesh, light, neighbors);
1274                         newmesh->next = firstmesh;
1275                         firstmesh = newmesh;
1276                         if (newmesh->element3s)
1277                         {
1278                                 int i;
1279                                 for (i = 0;i < newmesh->numtriangles*3;i++)
1280                                         newmesh->element3s[i] = newmesh->element3i[i];
1281                         }
1282                         if (createvbo)
1283                                 Mod_ShadowMesh_CreateVBOs(newmesh);
1284                 }
1285                 Mem_Free(mesh);
1286         }
1287
1288         // this can take a while, so let's do a keepalive here
1289         CL_KeepaliveMessage(false);
1290
1291         return firstmesh;
1292 }
1293
1294 void Mod_ShadowMesh_CalcBBox(shadowmesh_t *firstmesh, vec3_t mins, vec3_t maxs, vec3_t center, float *radius)
1295 {
1296         int i;
1297         shadowmesh_t *mesh;
1298         vec3_t nmins, nmaxs, ncenter, temp;
1299         float nradius2, dist2, *v;
1300         VectorClear(nmins);
1301         VectorClear(nmaxs);
1302         // calculate bbox
1303         for (mesh = firstmesh;mesh;mesh = mesh->next)
1304         {
1305                 if (mesh == firstmesh)
1306                 {
1307                         VectorCopy(mesh->vertex3f, nmins);
1308                         VectorCopy(mesh->vertex3f, nmaxs);
1309                 }
1310                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1311                 {
1312                         if (nmins[0] > v[0]) nmins[0] = v[0];if (nmaxs[0] < v[0]) nmaxs[0] = v[0];
1313                         if (nmins[1] > v[1]) nmins[1] = v[1];if (nmaxs[1] < v[1]) nmaxs[1] = v[1];
1314                         if (nmins[2] > v[2]) nmins[2] = v[2];if (nmaxs[2] < v[2]) nmaxs[2] = v[2];
1315                 }
1316         }
1317         // calculate center and radius
1318         ncenter[0] = (nmins[0] + nmaxs[0]) * 0.5f;
1319         ncenter[1] = (nmins[1] + nmaxs[1]) * 0.5f;
1320         ncenter[2] = (nmins[2] + nmaxs[2]) * 0.5f;
1321         nradius2 = 0;
1322         for (mesh = firstmesh;mesh;mesh = mesh->next)
1323         {
1324                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1325                 {
1326                         VectorSubtract(v, ncenter, temp);
1327                         dist2 = DotProduct(temp, temp);
1328                         if (nradius2 < dist2)
1329                                 nradius2 = dist2;
1330                 }
1331         }
1332         // return data
1333         if (mins)
1334                 VectorCopy(nmins, mins);
1335         if (maxs)
1336                 VectorCopy(nmaxs, maxs);
1337         if (center)
1338                 VectorCopy(ncenter, center);
1339         if (radius)
1340                 *radius = sqrt(nradius2);
1341 }
1342
1343 void Mod_ShadowMesh_Free(shadowmesh_t *mesh)
1344 {
1345         shadowmesh_t *nextmesh;
1346         for (;mesh;mesh = nextmesh)
1347         {
1348                 if (mesh->vertexpositionbuffer)
1349                         R_Mesh_DestroyMeshBuffer(mesh->vertexpositionbuffer);
1350                 if (mesh->vertexmeshbuffer)
1351                         R_Mesh_DestroyMeshBuffer(mesh->vertexmeshbuffer);
1352                 if (mesh->element3i_indexbuffer)
1353                         R_Mesh_DestroyMeshBuffer(mesh->element3i_indexbuffer);
1354                 if (mesh->element3s_indexbuffer)
1355                         R_Mesh_DestroyMeshBuffer(mesh->element3s_indexbuffer);
1356                 if (mesh->vbo_vertexbuffer)
1357                         R_Mesh_DestroyMeshBuffer(mesh->vbo_vertexbuffer);
1358                 nextmesh = mesh->next;
1359                 Mem_Free(mesh);
1360         }
1361 }
1362
1363 void Mod_CreateCollisionMesh(dp_model_t *mod)
1364 {
1365         int k;
1366         int numcollisionmeshtriangles;
1367         const msurface_t *surface;
1368         mempool_t *mempool = mod->mempool;
1369         if (!mempool && mod->brush.parentmodel)
1370                 mempool = mod->brush.parentmodel->mempool;
1371         // make a single combined collision mesh for physics engine use
1372         // TODO rewrite this to use the collision brushes as source, to fix issues with e.g. common/caulk which creates no drawsurface
1373         numcollisionmeshtriangles = 0;
1374         for (k = 0;k < mod->nummodelsurfaces;k++)
1375         {
1376                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1377                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1378                         continue;
1379                 numcollisionmeshtriangles += surface->num_triangles;
1380         }
1381         mod->brush.collisionmesh = Mod_ShadowMesh_Begin(mempool, numcollisionmeshtriangles * 3, numcollisionmeshtriangles, NULL, NULL, NULL, false, false, true);
1382         for (k = 0;k < mod->nummodelsurfaces;k++)
1383         {
1384                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1385                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1386                         continue;
1387                 Mod_ShadowMesh_AddMesh(mempool, mod->brush.collisionmesh, NULL, NULL, NULL, mod->surfmesh.data_vertex3f, NULL, NULL, NULL, NULL, surface->num_triangles, (mod->surfmesh.data_element3i + 3 * surface->num_firsttriangle));
1388         }
1389         mod->brush.collisionmesh = Mod_ShadowMesh_Finish(mempool, mod->brush.collisionmesh, false, true, false);
1390 }
1391
1392 void Mod_GetTerrainVertex3fTexCoord2fFromBGRA(const unsigned char *imagepixels, int imagewidth, int imageheight, int ix, int iy, float *vertex3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
1393 {
1394         float v[3], tc[3];
1395         v[0] = ix;
1396         v[1] = iy;
1397         if (ix >= 0 && iy >= 0 && ix < imagewidth && iy < imageheight)
1398                 v[2] = (imagepixels[((iy*imagewidth)+ix)*4+0] + imagepixels[((iy*imagewidth)+ix)*4+1] + imagepixels[((iy*imagewidth)+ix)*4+2]) * (1.0f / 765.0f);
1399         else
1400                 v[2] = 0;
1401         Matrix4x4_Transform(pixelstepmatrix, v, vertex3f);
1402         Matrix4x4_Transform(pixeltexturestepmatrix, v, tc);
1403         texcoord2f[0] = tc[0];
1404         texcoord2f[1] = tc[1];
1405 }
1406
1407 void Mod_GetTerrainVertexFromBGRA(const unsigned char *imagepixels, int imagewidth, int imageheight, int ix, int iy, float *vertex3f, float *svector3f, float *tvector3f, float *normal3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
1408 {
1409         float vup[3], vdown[3], vleft[3], vright[3];
1410         float tcup[3], tcdown[3], tcleft[3], tcright[3];
1411         float sv[3], tv[3], nl[3];
1412         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, pixelstepmatrix, pixeltexturestepmatrix);
1413         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy - 1, vup, tcup, pixelstepmatrix, pixeltexturestepmatrix);
1414         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy + 1, vdown, tcdown, pixelstepmatrix, pixeltexturestepmatrix);
1415         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix - 1, iy, vleft, tcleft, pixelstepmatrix, pixeltexturestepmatrix);
1416         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix + 1, iy, vright, tcright, pixelstepmatrix, pixeltexturestepmatrix);
1417         Mod_BuildBumpVectors(vertex3f, vup, vright, texcoord2f, tcup, tcright, svector3f, tvector3f, normal3f);
1418         Mod_BuildBumpVectors(vertex3f, vright, vdown, texcoord2f, tcright, tcdown, sv, tv, nl);
1419         VectorAdd(svector3f, sv, svector3f);
1420         VectorAdd(tvector3f, tv, tvector3f);
1421         VectorAdd(normal3f, nl, normal3f);
1422         Mod_BuildBumpVectors(vertex3f, vdown, vleft, texcoord2f, tcdown, tcleft, sv, tv, nl);
1423         VectorAdd(svector3f, sv, svector3f);
1424         VectorAdd(tvector3f, tv, tvector3f);
1425         VectorAdd(normal3f, nl, normal3f);
1426         Mod_BuildBumpVectors(vertex3f, vleft, vup, texcoord2f, tcleft, tcup, sv, tv, nl);
1427         VectorAdd(svector3f, sv, svector3f);
1428         VectorAdd(tvector3f, tv, tvector3f);
1429         VectorAdd(normal3f, nl, normal3f);
1430 }
1431
1432 void Mod_ConstructTerrainPatchFromBGRA(const unsigned char *imagepixels, int imagewidth, int imageheight, int x1, int y1, int width, int height, int *element3i, int *neighbor3i, float *vertex3f, float *svector3f, float *tvector3f, float *normal3f, float *texcoord2f, matrix4x4_t *pixelstepmatrix, matrix4x4_t *pixeltexturestepmatrix)
1433 {
1434         int x, y, ix, iy, *e;
1435         e = element3i;
1436         for (y = 0;y < height;y++)
1437         {
1438                 for (x = 0;x < width;x++)
1439                 {
1440                         e[0] = (y + 1) * (width + 1) + (x + 0);
1441                         e[1] = (y + 0) * (width + 1) + (x + 0);
1442                         e[2] = (y + 1) * (width + 1) + (x + 1);
1443                         e[3] = (y + 0) * (width + 1) + (x + 0);
1444                         e[4] = (y + 0) * (width + 1) + (x + 1);
1445                         e[5] = (y + 1) * (width + 1) + (x + 1);
1446                         e += 6;
1447                 }
1448         }
1449         Mod_BuildTriangleNeighbors(neighbor3i, element3i, width*height*2);
1450         for (y = 0, iy = y1;y < height + 1;y++, iy++)
1451                 for (x = 0, ix = x1;x < width + 1;x++, ix++, vertex3f += 3, texcoord2f += 2, svector3f += 3, tvector3f += 3, normal3f += 3)
1452                         Mod_GetTerrainVertexFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, svector3f, tvector3f, normal3f, pixelstepmatrix, pixeltexturestepmatrix);
1453 }
1454
1455 #if 0
1456 void Mod_Terrain_SurfaceRecurseChunk(dp_model_t *model, int stepsize, int x, int y)
1457 {
1458         float mins[3];
1459         float maxs[3];
1460         float chunkwidth = min(stepsize, model->terrain.width - 1 - x);
1461         float chunkheight = min(stepsize, model->terrain.height - 1 - y);
1462         float viewvector[3];
1463         unsigned int firstvertex;
1464         unsigned int *e;
1465         float *v;
1466         if (chunkwidth < 2 || chunkheight < 2)
1467                 return;
1468         VectorSet(mins, model->terrain.mins[0] +  x    * stepsize * model->terrain.scale[0], model->terrain.mins[1] +  y    * stepsize * model->terrain.scale[1], model->terrain.mins[2]);
1469         VectorSet(maxs, model->terrain.mins[0] + (x+1) * stepsize * model->terrain.scale[0], model->terrain.mins[1] + (y+1) * stepsize * model->terrain.scale[1], model->terrain.maxs[2]);
1470         viewvector[0] = bound(mins[0], localvieworigin, maxs[0]) - model->terrain.vieworigin[0];
1471         viewvector[1] = bound(mins[1], localvieworigin, maxs[1]) - model->terrain.vieworigin[1];
1472         viewvector[2] = bound(mins[2], localvieworigin, maxs[2]) - model->terrain.vieworigin[2];
1473         if (stepsize > 1 && VectorLength(viewvector) < stepsize*model->terrain.scale[0]*r_terrain_lodscale.value)
1474         {
1475                 // too close for this stepsize, emit as 4 chunks instead
1476                 stepsize /= 2;
1477                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y);
1478                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y);
1479                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y+stepsize);
1480                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y+stepsize);
1481                 return;
1482         }
1483         // emit the geometry at stepsize into our vertex buffer / index buffer
1484         // we add two columns and two rows for skirt
1485         outwidth = chunkwidth+2;
1486         outheight = chunkheight+2;
1487         outwidth2 = outwidth-1;
1488         outheight2 = outheight-1;
1489         outwidth3 = outwidth+1;
1490         outheight3 = outheight+1;
1491         firstvertex = numvertices;
1492         e = model->terrain.element3i + numtriangles;
1493         numtriangles += chunkwidth*chunkheight*2+chunkwidth*2*2+chunkheight*2*2;
1494         v = model->terrain.vertex3f + numvertices;
1495         numvertices += (chunkwidth+1)*(chunkheight+1)+(chunkwidth+1)*2+(chunkheight+1)*2;
1496         // emit the triangles (note: the skirt is treated as two extra rows and two extra columns)
1497         for (ty = 0;ty < outheight;ty++)
1498         {
1499                 for (tx = 0;tx < outwidth;tx++)
1500                 {
1501                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1502                         *e++ = firstvertex + (ty  )*outwidth3+(tx+1);
1503                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1504                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1505                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1506                         *e++ = firstvertex + (ty+1)*outwidth3+(tx  );
1507                 }
1508         }
1509         // TODO: emit surface vertices (x+tx*stepsize, y+ty*stepsize)
1510         for (ty = 0;ty <= outheight;ty++)
1511         {
1512                 skirtrow = ty == 0 || ty == outheight;
1513                 ry = y+bound(1, ty, outheight)*stepsize;
1514                 for (tx = 0;tx <= outwidth;tx++)
1515                 {
1516                         skirt = skirtrow || tx == 0 || tx == outwidth;
1517                         rx = x+bound(1, tx, outwidth)*stepsize;
1518                         v[0] = rx*scale[0];
1519                         v[1] = ry*scale[1];
1520                         v[2] = heightmap[ry*terrainwidth+rx]*scale[2];
1521                         v += 3;
1522                 }
1523         }
1524         // TODO: emit skirt vertices
1525 }
1526
1527 void Mod_Terrain_UpdateSurfacesForViewOrigin(dp_model_t *model)
1528 {
1529         for (y = 0;y < model->terrain.size[1];y += model->terrain.
1530         Mod_Terrain_SurfaceRecurseChunk(model, model->terrain.maxstepsize, x, y);
1531         Mod_Terrain_BuildChunk(model,
1532 }
1533 #endif
1534
1535 q3wavefunc_t Mod_LoadQ3Shaders_EnumerateWaveFunc(const char *s)
1536 {
1537         if (!strcasecmp(s, "sin"))             return Q3WAVEFUNC_SIN;
1538         if (!strcasecmp(s, "square"))          return Q3WAVEFUNC_SQUARE;
1539         if (!strcasecmp(s, "triangle"))        return Q3WAVEFUNC_TRIANGLE;
1540         if (!strcasecmp(s, "sawtooth"))        return Q3WAVEFUNC_SAWTOOTH;
1541         if (!strcasecmp(s, "inversesawtooth")) return Q3WAVEFUNC_INVERSESAWTOOTH;
1542         if (!strcasecmp(s, "noise"))           return Q3WAVEFUNC_NOISE;
1543         Con_DPrintf("Mod_LoadQ3Shaders: unknown wavefunc %s\n", s);
1544         return Q3WAVEFUNC_NONE;
1545 }
1546
1547 void Mod_FreeQ3Shaders(void)
1548 {
1549         Mem_FreePool(&q3shaders_mem);
1550 }
1551
1552 static void Q3Shader_AddToHash (q3shaderinfo_t* shader)
1553 {
1554         unsigned short hash = CRC_Block_CaseInsensitive ((const unsigned char *)shader->name, strlen (shader->name));
1555         q3shader_hash_entry_t* entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
1556         q3shader_hash_entry_t* lastEntry = NULL;
1557         while (entry != NULL)
1558         {
1559                 if (strcasecmp (entry->shader.name, shader->name) == 0)
1560                 {
1561                         unsigned char *start, *end, *start2;
1562                         start = (unsigned char *) (&shader->Q3SHADERINFO_COMPARE_START);
1563                         end = ((unsigned char *) (&shader->Q3SHADERINFO_COMPARE_END)) + sizeof(shader->Q3SHADERINFO_COMPARE_END);
1564                         start2 = (unsigned char *) (&entry->shader.Q3SHADERINFO_COMPARE_START);
1565                         if(memcmp(start, start2, end - start))
1566                                 Con_DPrintf("Shader '%s' already defined, ignoring mismatching redeclaration\n", shader->name);
1567                         else
1568                                 Con_DPrintf("Shader '%s' already defined\n", shader->name);
1569                         return;
1570                 }
1571                 lastEntry = entry;
1572                 entry = entry->chain;
1573         }
1574         if (entry == NULL)
1575         {
1576                 if (lastEntry->shader.name[0] != 0)
1577                 {
1578                         /* Add to chain */
1579                         q3shader_hash_entry_t* newEntry = (q3shader_hash_entry_t*)
1580                           Mem_ExpandableArray_AllocRecord (&q3shader_data->hash_entries);
1581
1582                         while (lastEntry->chain != NULL) lastEntry = lastEntry->chain;
1583                         lastEntry->chain = newEntry;
1584                         newEntry->chain = NULL;
1585                         lastEntry = newEntry;
1586                 }
1587                 /* else: head of chain, in hash entry array */
1588                 entry = lastEntry;
1589         }
1590         memcpy (&entry->shader, shader, sizeof (q3shaderinfo_t));
1591 }
1592
1593 extern cvar_t r_picmipworld;
1594 extern cvar_t mod_q3shader_default_offsetmapping;
1595 void Mod_LoadQ3Shaders(void)
1596 {
1597         int j;
1598         int fileindex;
1599         fssearch_t *search;
1600         char *f;
1601         const char *text;
1602         q3shaderinfo_t shader;
1603         q3shaderinfo_layer_t *layer;
1604         int numparameters;
1605         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
1606
1607         Mod_FreeQ3Shaders();
1608
1609         q3shaders_mem = Mem_AllocPool("q3shaders", 0, NULL);
1610         q3shader_data = (q3shader_data_t*)Mem_Alloc (q3shaders_mem,
1611                 sizeof (q3shader_data_t));
1612         Mem_ExpandableArray_NewArray (&q3shader_data->hash_entries,
1613                 q3shaders_mem, sizeof (q3shader_hash_entry_t), 256);
1614         Mem_ExpandableArray_NewArray (&q3shader_data->char_ptrs,
1615                 q3shaders_mem, sizeof (char**), 256);
1616
1617         search = FS_Search("scripts/*.shader", true, false);
1618         if (!search)
1619                 return;
1620         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
1621         {
1622                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
1623                 if (!f)
1624                         continue;
1625                 while (COM_ParseToken_QuakeC(&text, false))
1626                 {
1627                         memset (&shader, 0, sizeof(shader));
1628                         shader.reflectmin = 0;
1629                         shader.reflectmax = 1;
1630                         shader.refractfactor = 1;
1631                         Vector4Set(shader.refractcolor4f, 1, 1, 1, 1);
1632                         shader.reflectfactor = 1;
1633                         Vector4Set(shader.reflectcolor4f, 1, 1, 1, 1);
1634                         shader.r_water_wateralpha = 1;
1635                         shader.offsetmapping = (mod_q3shader_default_offsetmapping.value) ? OFFSETMAPPING_DEFAULT : OFFSETMAPPING_OFF;
1636                         shader.offsetscale = 1;
1637                         shader.specularscalemod = 1;
1638                         shader.specularpowermod = 1;
1639
1640                         strlcpy(shader.name, com_token, sizeof(shader.name));
1641                         if (!COM_ParseToken_QuakeC(&text, false) || strcasecmp(com_token, "{"))
1642                         {
1643                                 Con_DPrintf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
1644                                 break;
1645                         }
1646                         while (COM_ParseToken_QuakeC(&text, false))
1647                         {
1648                                 if (!strcasecmp(com_token, "}"))
1649                                         break;
1650                                 if (!strcasecmp(com_token, "{"))
1651                                 {
1652                                         static q3shaderinfo_layer_t dummy;
1653                                         if (shader.numlayers < Q3SHADER_MAXLAYERS)
1654                                         {
1655                                                 layer = shader.layers + shader.numlayers++;
1656                                         }
1657                                         else
1658                                         {
1659                                                 // parse and process it anyway, just don't store it (so a map $lightmap or such stuff still is found)
1660                                                 memset(&dummy, 0, sizeof(dummy));
1661                                                 layer = &dummy;
1662                                         }
1663                                         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1664                                         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1665                                         layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1666                                         layer->blendfunc[0] = GL_ONE;
1667                                         layer->blendfunc[1] = GL_ZERO;
1668                                         while (COM_ParseToken_QuakeC(&text, false))
1669                                         {
1670                                                 if (!strcasecmp(com_token, "}"))
1671                                                         break;
1672                                                 if (!strcasecmp(com_token, "\n"))
1673                                                         continue;
1674                                                 numparameters = 0;
1675                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1676                                                 {
1677                                                         if (j < TEXTURE_MAXFRAMES + 4)
1678                                                         {
1679                                                                 // remap dp_water to dpwater, dp_reflect to dpreflect, etc.
1680                                                                 if(j == 0 && !strncasecmp(com_token, "dp_", 3))
1681                                                                         dpsnprintf(parameter[j], sizeof(parameter[j]), "dp%s", &com_token[3]);
1682                                                                 else
1683                                                                         strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1684                                                                 numparameters = j + 1;
1685                                                         }
1686                                                         if (!COM_ParseToken_QuakeC(&text, true))
1687                                                                 break;
1688                                                 }
1689                                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1690                                                 //      parameter[j][0] = 0;
1691                                                 if (developer_insane.integer)
1692                                                 {
1693                                                         Con_DPrintf("%s %i: ", shader.name, shader.numlayers - 1);
1694                                                         for (j = 0;j < numparameters;j++)
1695                                                                 Con_DPrintf(" %s", parameter[j]);
1696                                                         Con_DPrint("\n");
1697                                                 }
1698                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
1699                                                 {
1700                                                         if (numparameters == 2)
1701                                                         {
1702                                                                 if (!strcasecmp(parameter[1], "add"))
1703                                                                 {
1704                                                                         layer->blendfunc[0] = GL_ONE;
1705                                                                         layer->blendfunc[1] = GL_ONE;
1706                                                                 }
1707                                                                 else if (!strcasecmp(parameter[1], "filter"))
1708                                                                 {
1709                                                                         layer->blendfunc[0] = GL_DST_COLOR;
1710                                                                         layer->blendfunc[1] = GL_ZERO;
1711                                                                 }
1712                                                                 else if (!strcasecmp(parameter[1], "blend"))
1713                                                                 {
1714                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
1715                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
1716                                                                 }
1717                                                         }
1718                                                         else if (numparameters == 3)
1719                                                         {
1720                                                                 int k;
1721                                                                 for (k = 0;k < 2;k++)
1722                                                                 {
1723                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
1724                                                                                 layer->blendfunc[k] = GL_ONE;
1725                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
1726                                                                                 layer->blendfunc[k] = GL_ZERO;
1727                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
1728                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
1729                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
1730                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
1731                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
1732                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
1733                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
1734                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1735                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
1736                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
1737                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
1738                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
1739                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
1740                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
1741                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
1742                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1743                                                                         else
1744                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
1745                                                                 }
1746                                                         }
1747                                                 }
1748                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
1749                                                         layer->alphatest = true;
1750                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
1751                                                 {
1752                                                         if (!strcasecmp(parameter[0], "clampmap"))
1753                                                                 layer->clampmap = true;
1754                                                         layer->numframes = 1;
1755                                                         layer->framerate = 1;
1756                                                         layer->texturename = (char**)Mem_ExpandableArray_AllocRecord (
1757                                                                 &q3shader_data->char_ptrs);
1758                                                         layer->texturename[0] = Mem_strdup (q3shaders_mem, parameter[1]);
1759                                                         if (!strcasecmp(parameter[1], "$lightmap"))
1760                                                                 shader.lighting = true;
1761                                                 }
1762                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
1763                                                 {
1764                                                         int i;
1765                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
1766                                                         layer->framerate = atof(parameter[1]);
1767                                                         layer->texturename = (char **) Mem_Alloc (q3shaders_mem, sizeof (char*) * layer->numframes);
1768                                                         for (i = 0;i < layer->numframes;i++)
1769                                                                 layer->texturename[i] = Mem_strdup (q3shaders_mem, parameter[i + 2]);
1770                                                 }
1771                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen"))
1772                                                 {
1773                                                         int i;
1774                                                         for (i = 0;i < numparameters - 2 && i < Q3RGBGEN_MAXPARMS;i++)
1775                                                                 layer->rgbgen.parms[i] = atof(parameter[i+2]);
1776                                                              if (!strcasecmp(parameter[1], "identity"))         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1777                                                         else if (!strcasecmp(parameter[1], "const"))            layer->rgbgen.rgbgen = Q3RGBGEN_CONST;
1778                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->rgbgen.rgbgen = Q3RGBGEN_ENTITY;
1779                                                         else if (!strcasecmp(parameter[1], "exactvertex"))      layer->rgbgen.rgbgen = Q3RGBGEN_EXACTVERTEX;
1780                                                         else if (!strcasecmp(parameter[1], "identitylighting")) layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITYLIGHTING;
1781                                                         else if (!strcasecmp(parameter[1], "lightingdiffuse"))  layer->rgbgen.rgbgen = Q3RGBGEN_LIGHTINGDIFFUSE;
1782                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSENTITY;
1783                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSVERTEX;
1784                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->rgbgen.rgbgen = Q3RGBGEN_VERTEX;
1785                                                         else if (!strcasecmp(parameter[1], "wave"))
1786                                                         {
1787                                                                 layer->rgbgen.rgbgen = Q3RGBGEN_WAVE;
1788                                                                 layer->rgbgen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1789                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1790                                                                         layer->rgbgen.waveparms[i] = atof(parameter[i+3]);
1791                                                         }
1792                                                         else Con_DPrintf("%s parsing warning: unknown rgbgen %s\n", search->filenames[fileindex], parameter[1]);
1793                                                 }
1794                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen"))
1795                                                 {
1796                                                         int i;
1797                                                         for (i = 0;i < numparameters - 2 && i < Q3ALPHAGEN_MAXPARMS;i++)
1798                                                                 layer->alphagen.parms[i] = atof(parameter[i+2]);
1799                                                              if (!strcasecmp(parameter[1], "identity"))         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1800                                                         else if (!strcasecmp(parameter[1], "const"))            layer->alphagen.alphagen = Q3ALPHAGEN_CONST;
1801                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->alphagen.alphagen = Q3ALPHAGEN_ENTITY;
1802                                                         else if (!strcasecmp(parameter[1], "lightingspecular")) layer->alphagen.alphagen = Q3ALPHAGEN_LIGHTINGSPECULAR;
1803                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSENTITY;
1804                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSVERTEX;
1805                                                         else if (!strcasecmp(parameter[1], "portal"))           layer->alphagen.alphagen = Q3ALPHAGEN_PORTAL;
1806                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->alphagen.alphagen = Q3ALPHAGEN_VERTEX;
1807                                                         else if (!strcasecmp(parameter[1], "wave"))
1808                                                         {
1809                                                                 layer->alphagen.alphagen = Q3ALPHAGEN_WAVE;
1810                                                                 layer->alphagen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1811                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1812                                                                         layer->alphagen.waveparms[i] = atof(parameter[i+3]);
1813                                                         }
1814                                                         else Con_DPrintf("%s parsing warning: unknown alphagen %s\n", search->filenames[fileindex], parameter[1]);
1815                                                 }
1816                                                 else if (numparameters >= 2 && (!strcasecmp(parameter[0], "texgen") || !strcasecmp(parameter[0], "tcgen")))
1817                                                 {
1818                                                         int i;
1819                                                         // observed values: tcgen environment
1820                                                         // no other values have been observed in real shaders
1821                                                         for (i = 0;i < numparameters - 2 && i < Q3TCGEN_MAXPARMS;i++)
1822                                                                 layer->tcgen.parms[i] = atof(parameter[i+2]);
1823                                                              if (!strcasecmp(parameter[1], "base"))        layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1824                                                         else if (!strcasecmp(parameter[1], "texture"))     layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1825                                                         else if (!strcasecmp(parameter[1], "environment")) layer->tcgen.tcgen = Q3TCGEN_ENVIRONMENT;
1826                                                         else if (!strcasecmp(parameter[1], "lightmap"))    layer->tcgen.tcgen = Q3TCGEN_LIGHTMAP;
1827                                                         else if (!strcasecmp(parameter[1], "vector"))      layer->tcgen.tcgen = Q3TCGEN_VECTOR;
1828                                                         else Con_DPrintf("%s parsing warning: unknown tcgen mode %s\n", search->filenames[fileindex], parameter[1]);
1829                                                 }
1830                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "tcmod"))
1831                                                 {
1832                                                         int i, tcmodindex;
1833                                                         // observed values:
1834                                                         // tcmod rotate #
1835                                                         // tcmod scale # #
1836                                                         // tcmod scroll # #
1837                                                         // tcmod stretch sin # # # #
1838                                                         // tcmod stretch triangle # # # #
1839                                                         // tcmod transform # # # # # #
1840                                                         // tcmod turb # # # #
1841                                                         // tcmod turb sin # # # #  (this is bogus)
1842                                                         // no other values have been observed in real shaders
1843                                                         for (tcmodindex = 0;tcmodindex < Q3MAXTCMODS;tcmodindex++)
1844                                                                 if (!layer->tcmods[tcmodindex].tcmod)
1845                                                                         break;
1846                                                         if (tcmodindex < Q3MAXTCMODS)
1847                                                         {
1848                                                                 for (i = 0;i < numparameters - 2 && i < Q3TCMOD_MAXPARMS;i++)
1849                                                                         layer->tcmods[tcmodindex].parms[i] = atof(parameter[i+2]);
1850                                                                          if (!strcasecmp(parameter[1], "entitytranslate")) layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ENTITYTRANSLATE;
1851                                                                 else if (!strcasecmp(parameter[1], "rotate"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ROTATE;
1852                                                                 else if (!strcasecmp(parameter[1], "scale"))           layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCALE;
1853                                                                 else if (!strcasecmp(parameter[1], "scroll"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCROLL;
1854                                                                 else if (!strcasecmp(parameter[1], "page"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_PAGE;
1855                                                                 else if (!strcasecmp(parameter[1], "stretch"))
1856                                                                 {
1857                                                                         layer->tcmods[tcmodindex].tcmod = Q3TCMOD_STRETCH;
1858                                                                         layer->tcmods[tcmodindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1859                                                                         for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1860                                                                                 layer->tcmods[tcmodindex].waveparms[i] = atof(parameter[i+3]);
1861                                                                 }
1862                                                                 else if (!strcasecmp(parameter[1], "transform"))       layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TRANSFORM;
1863                                                                 else if (!strcasecmp(parameter[1], "turb"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TURBULENT;
1864                                                                 else Con_DPrintf("%s parsing warning: unknown tcmod mode %s\n", search->filenames[fileindex], parameter[1]);
1865                                                         }
1866                                                         else
1867                                                                 Con_DPrintf("%s parsing warning: too many tcmods on one layer\n", search->filenames[fileindex]);
1868                                                 }
1869                                                 // break out a level if it was a closing brace (not using the character here to not confuse vim)
1870                                                 if (!strcasecmp(com_token, "}"))
1871                                                         break;
1872                                         }
1873                                         if (layer->rgbgen.rgbgen == Q3RGBGEN_LIGHTINGDIFFUSE || layer->rgbgen.rgbgen == Q3RGBGEN_VERTEX)
1874                                                 shader.lighting = true;
1875                                         if (layer->alphagen.alphagen == Q3ALPHAGEN_VERTEX)
1876                                         {
1877                                                 if (layer == shader.layers + 0)
1878                                                 {
1879                                                         // vertex controlled transparency
1880                                                         shader.vertexalpha = true;
1881                                                 }
1882                                                 else
1883                                                 {
1884                                                         // multilayer terrain shader or similar
1885                                                         shader.textureblendalpha = true;
1886                                                 }
1887                                         }
1888                                         layer->texflags = TEXF_ALPHA;
1889                                         if (!(shader.surfaceparms & Q3SURFACEPARM_NOMIPMAPS))
1890                                                 layer->texflags |= TEXF_MIPMAP;
1891                                         if (!(shader.textureflags & Q3TEXTUREFLAG_NOPICMIP))
1892                                                 layer->texflags |= TEXF_PICMIP | TEXF_COMPRESS;
1893                                         if (layer->clampmap)
1894                                                 layer->texflags |= TEXF_CLAMP;
1895                                         continue;
1896                                 }
1897                                 numparameters = 0;
1898                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1899                                 {
1900                                         if (j < TEXTURE_MAXFRAMES + 4)
1901                                         {
1902                                                 // remap dp_water to dpwater, dp_reflect to dpreflect, etc.
1903                                                 if(j == 0 && !strncasecmp(com_token, "dp_", 3))
1904                                                         dpsnprintf(parameter[j], sizeof(parameter[j]), "dp%s", &com_token[3]);
1905                                                 else
1906                                                         strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1907                                                 numparameters = j + 1;
1908                                         }
1909                                         if (!COM_ParseToken_QuakeC(&text, true))
1910                                                 break;
1911                                 }
1912                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1913                                 //      parameter[j][0] = 0;
1914                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
1915                                         break;
1916                                 if (developer_insane.integer)
1917                                 {
1918                                         Con_DPrintf("%s: ", shader.name);
1919                                         for (j = 0;j < numparameters;j++)
1920                                                 Con_DPrintf(" %s", parameter[j]);
1921                                         Con_DPrint("\n");
1922                                 }
1923                                 if (numparameters < 1)
1924                                         continue;
1925                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
1926                                 {
1927                                         if (!strcasecmp(parameter[1], "alphashadow"))
1928                                                 shader.surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
1929                                         else if (!strcasecmp(parameter[1], "areaportal"))
1930                                                 shader.surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
1931                                         else if (!strcasecmp(parameter[1], "botclip"))
1932                                                 shader.surfaceparms |= Q3SURFACEPARM_BOTCLIP;
1933                                         else if (!strcasecmp(parameter[1], "clusterportal"))
1934                                                 shader.surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
1935                                         else if (!strcasecmp(parameter[1], "detail"))
1936                                                 shader.surfaceparms |= Q3SURFACEPARM_DETAIL;
1937                                         else if (!strcasecmp(parameter[1], "donotenter"))
1938                                                 shader.surfaceparms |= Q3SURFACEPARM_DONOTENTER;
1939                                         else if (!strcasecmp(parameter[1], "dust"))
1940                                                 shader.surfaceparms |= Q3SURFACEPARM_DUST;
1941                                         else if (!strcasecmp(parameter[1], "hint"))
1942                                                 shader.surfaceparms |= Q3SURFACEPARM_HINT;
1943                                         else if (!strcasecmp(parameter[1], "fog"))
1944                                                 shader.surfaceparms |= Q3SURFACEPARM_FOG;
1945                                         else if (!strcasecmp(parameter[1], "lava"))
1946                                                 shader.surfaceparms |= Q3SURFACEPARM_LAVA;
1947                                         else if (!strcasecmp(parameter[1], "lightfilter"))
1948                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
1949                                         else if (!strcasecmp(parameter[1], "lightgrid"))
1950                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
1951                                         else if (!strcasecmp(parameter[1], "metalsteps"))
1952                                                 shader.surfaceparms |= Q3SURFACEPARM_METALSTEPS;
1953                                         else if (!strcasecmp(parameter[1], "nodamage"))
1954                                                 shader.surfaceparms |= Q3SURFACEPARM_NODAMAGE;
1955                                         else if (!strcasecmp(parameter[1], "nodlight"))
1956                                                 shader.surfaceparms |= Q3SURFACEPARM_NODLIGHT;
1957                                         else if (!strcasecmp(parameter[1], "nodraw"))
1958                                                 shader.surfaceparms |= Q3SURFACEPARM_NODRAW;
1959                                         else if (!strcasecmp(parameter[1], "nodrop"))
1960                                                 shader.surfaceparms |= Q3SURFACEPARM_NODROP;
1961                                         else if (!strcasecmp(parameter[1], "noimpact"))
1962                                                 shader.surfaceparms |= Q3SURFACEPARM_NOIMPACT;
1963                                         else if (!strcasecmp(parameter[1], "nolightmap"))
1964                                                 shader.surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
1965                                         else if (!strcasecmp(parameter[1], "nomarks"))
1966                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMARKS;
1967                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
1968                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
1969                                         else if (!strcasecmp(parameter[1], "nonsolid"))
1970                                                 shader.surfaceparms |= Q3SURFACEPARM_NONSOLID;
1971                                         else if (!strcasecmp(parameter[1], "origin"))
1972                                                 shader.surfaceparms |= Q3SURFACEPARM_ORIGIN;
1973                                         else if (!strcasecmp(parameter[1], "playerclip"))
1974                                                 shader.surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
1975                                         else if (!strcasecmp(parameter[1], "sky"))
1976                                                 shader.surfaceparms |= Q3SURFACEPARM_SKY;
1977                                         else if (!strcasecmp(parameter[1], "slick"))
1978                                                 shader.surfaceparms |= Q3SURFACEPARM_SLICK;
1979                                         else if (!strcasecmp(parameter[1], "slime"))
1980                                                 shader.surfaceparms |= Q3SURFACEPARM_SLIME;
1981                                         else if (!strcasecmp(parameter[1], "structural"))
1982                                                 shader.surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
1983                                         else if (!strcasecmp(parameter[1], "trans"))
1984                                                 shader.surfaceparms |= Q3SURFACEPARM_TRANS;
1985                                         else if (!strcasecmp(parameter[1], "water"))
1986                                                 shader.surfaceparms |= Q3SURFACEPARM_WATER;
1987                                         else if (!strcasecmp(parameter[1], "pointlight"))
1988                                                 shader.surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
1989                                         else if (!strcasecmp(parameter[1], "antiportal"))
1990                                                 shader.surfaceparms |= Q3SURFACEPARM_ANTIPORTAL;
1991                                         else
1992                                                 Con_DPrintf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
1993                                 }
1994                                 else if (!strcasecmp(parameter[0], "dpshadow"))
1995                                         shader.dpshadow = true;
1996                                 else if (!strcasecmp(parameter[0], "dpnoshadow"))
1997                                         shader.dpnoshadow = true;
1998                                 else if (!strcasecmp(parameter[0], "dpreflectcube"))
1999                                         strlcpy(shader.dpreflectcube, parameter[1], sizeof(shader.dpreflectcube));
2000                                 else if (!strcasecmp(parameter[0], "dpmeshcollisions"))
2001                                         shader.dpmeshcollisions = true;
2002                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
2003                                 {
2004                                         // some q3 skies don't have the sky parm set
2005                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
2006                                         strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
2007                                 }
2008                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
2009                                 {
2010                                         // some q3 skies don't have the sky parm set
2011                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
2012                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
2013                                                 strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
2014                                 }
2015                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
2016                                 {
2017                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
2018                                                 shader.textureflags |= Q3TEXTUREFLAG_TWOSIDED;
2019                                 }
2020                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
2021                                         shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
2022                                 else if (!strcasecmp(parameter[0], "nopicmip"))
2023                                         shader.textureflags |= Q3TEXTUREFLAG_NOPICMIP;
2024                                 else if (!strcasecmp(parameter[0], "polygonoffset"))
2025                                         shader.textureflags |= Q3TEXTUREFLAG_POLYGONOFFSET;
2026                                 else if (!strcasecmp(parameter[0], "dprefract") && numparameters >= 5)
2027                                 {
2028                                         shader.textureflags |= Q3TEXTUREFLAG_REFRACTION;
2029                                         shader.refractfactor = atof(parameter[1]);
2030                                         Vector4Set(shader.refractcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), 1);
2031                                 }
2032                                 else if (!strcasecmp(parameter[0], "dpreflect") && numparameters >= 6)
2033                                 {
2034                                         shader.textureflags |= Q3TEXTUREFLAG_REFLECTION;
2035                                         shader.reflectfactor = atof(parameter[1]);
2036                                         Vector4Set(shader.reflectcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), atof(parameter[5]));
2037                                 }
2038                                 else if (!strcasecmp(parameter[0], "dpcamera"))
2039                                 {
2040                                         shader.textureflags |= Q3TEXTUREFLAG_CAMERA;
2041                                 }
2042                                 else if (!strcasecmp(parameter[0], "dpwater") && numparameters >= 12)
2043                                 {
2044                                         shader.textureflags |= Q3TEXTUREFLAG_WATERSHADER;
2045                                         shader.reflectmin = atof(parameter[1]);
2046                                         shader.reflectmax = atof(parameter[2]);
2047                                         shader.refractfactor = atof(parameter[3]);
2048                                         shader.reflectfactor = atof(parameter[4]);
2049                                         Vector4Set(shader.refractcolor4f, atof(parameter[5]), atof(parameter[6]), atof(parameter[7]), 1);
2050                                         Vector4Set(shader.reflectcolor4f, atof(parameter[8]), atof(parameter[9]), atof(parameter[10]), 1);
2051                                         shader.r_water_wateralpha = atof(parameter[11]);
2052                                 }
2053                                 else if (!strcasecmp(parameter[0], "dpglossintensitymod") && numparameters >= 2)
2054                                 {
2055                                         shader.specularscalemod = atof(parameter[1]);
2056                                 }
2057                                 else if (!strcasecmp(parameter[0], "dpglossexponentmod") && numparameters >= 2)
2058                                 {
2059                                         shader.specularpowermod = atof(parameter[1]);
2060                                 }
2061                                 else if (!strcasecmp(parameter[0], "dpoffsetmapping") && numparameters >= 3)
2062                                 {
2063                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "off"))
2064                                                 shader.offsetmapping = OFFSETMAPPING_OFF;
2065                                         else if (!strcasecmp(parameter[1], "default"))
2066                                                 shader.offsetmapping = OFFSETMAPPING_DEFAULT;
2067                                         else if (!strcasecmp(parameter[1], "linear"))
2068                                                 shader.offsetmapping = OFFSETMAPPING_LINEAR;
2069                                         else if (!strcasecmp(parameter[1], "relief"))
2070                                                 shader.offsetmapping = OFFSETMAPPING_RELIEF;
2071                                         shader.offsetscale = atof(parameter[2]);
2072                                 }
2073                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
2074                                 {
2075                                         int i, deformindex;
2076                                         for (deformindex = 0;deformindex < Q3MAXDEFORMS;deformindex++)
2077                                                 if (!shader.deforms[deformindex].deform)
2078                                                         break;
2079                                         if (deformindex < Q3MAXDEFORMS)
2080                                         {
2081                                                 for (i = 0;i < numparameters - 2 && i < Q3DEFORM_MAXPARMS;i++)
2082                                                         shader.deforms[deformindex].parms[i] = atof(parameter[i+2]);
2083                                                      if (!strcasecmp(parameter[1], "projectionshadow")) shader.deforms[deformindex].deform = Q3DEFORM_PROJECTIONSHADOW;
2084                                                 else if (!strcasecmp(parameter[1], "autosprite"      )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE;
2085                                                 else if (!strcasecmp(parameter[1], "autosprite2"     )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE2;
2086                                                 else if (!strcasecmp(parameter[1], "text0"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT0;
2087                                                 else if (!strcasecmp(parameter[1], "text1"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT1;
2088                                                 else if (!strcasecmp(parameter[1], "text2"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT2;
2089                                                 else if (!strcasecmp(parameter[1], "text3"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT3;
2090                                                 else if (!strcasecmp(parameter[1], "text4"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT4;
2091                                                 else if (!strcasecmp(parameter[1], "text5"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT5;
2092                                                 else if (!strcasecmp(parameter[1], "text6"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT6;
2093                                                 else if (!strcasecmp(parameter[1], "text7"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT7;
2094                                                 else if (!strcasecmp(parameter[1], "bulge"           )) shader.deforms[deformindex].deform = Q3DEFORM_BULGE;
2095                                                 else if (!strcasecmp(parameter[1], "normal"          )) shader.deforms[deformindex].deform = Q3DEFORM_NORMAL;
2096                                                 else if (!strcasecmp(parameter[1], "wave"            ))
2097                                                 {
2098                                                         shader.deforms[deformindex].deform = Q3DEFORM_WAVE;
2099                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[3]);
2100                                                         for (i = 0;i < numparameters - 4 && i < Q3WAVEPARMS;i++)
2101                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+4]);
2102                                                 }
2103                                                 else if (!strcasecmp(parameter[1], "move"            ))
2104                                                 {
2105                                                         shader.deforms[deformindex].deform = Q3DEFORM_MOVE;
2106                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[5]);
2107                                                         for (i = 0;i < numparameters - 6 && i < Q3WAVEPARMS;i++)
2108                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+6]);
2109                                                 }
2110                                         }
2111                                 }
2112                         }
2113                         // pick the primary layer to render with
2114                         if (shader.numlayers)
2115                         {
2116                                 shader.backgroundlayer = -1;
2117                                 shader.primarylayer = 0;
2118                                 // if lightmap comes first this is definitely an ordinary texture
2119                                 // if the first two layers have the correct blendfuncs and use vertex alpha, it is a blended terrain shader
2120                                 if ((shader.layers[shader.primarylayer].texturename != NULL)
2121                                   && !strcasecmp(shader.layers[shader.primarylayer].texturename[0], "$lightmap"))
2122                                 {
2123                                         shader.backgroundlayer = -1;
2124                                         shader.primarylayer = 1;
2125                                 }
2126                                 else if (shader.numlayers >= 2
2127                                 &&   shader.layers[1].alphagen.alphagen == Q3ALPHAGEN_VERTEX
2128                                 &&  (shader.layers[0].blendfunc[0] == GL_ONE       && shader.layers[0].blendfunc[1] == GL_ZERO                && !shader.layers[0].alphatest)
2129                                 && ((shader.layers[1].blendfunc[0] == GL_SRC_ALPHA && shader.layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
2130                                 ||  (shader.layers[1].blendfunc[0] == GL_ONE       && shader.layers[1].blendfunc[1] == GL_ZERO                &&  shader.layers[1].alphatest)))
2131                                 {
2132                                         // terrain blending or other effects
2133                                         shader.backgroundlayer = 0;
2134                                         shader.primarylayer = 1;
2135                                 }
2136                         }
2137                         // fix up multiple reflection types
2138                         if(shader.textureflags & Q3TEXTUREFLAG_WATERSHADER)
2139                                 shader.textureflags &= ~(Q3TEXTUREFLAG_REFRACTION | Q3TEXTUREFLAG_REFLECTION | Q3TEXTUREFLAG_CAMERA);
2140
2141                         Q3Shader_AddToHash (&shader);
2142                 }
2143                 Mem_Free(f);
2144         }
2145         FS_FreeSearch(search);
2146 }
2147
2148 q3shaderinfo_t *Mod_LookupQ3Shader(const char *name)
2149 {
2150         unsigned short hash;
2151         q3shader_hash_entry_t* entry;
2152         if (!q3shaders_mem)
2153                 Mod_LoadQ3Shaders();
2154         hash = CRC_Block_CaseInsensitive ((const unsigned char *)name, strlen (name));
2155         entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
2156         while (entry != NULL)
2157         {
2158                 if (strcasecmp (entry->shader.name, name) == 0)
2159                         return &entry->shader;
2160                 entry = entry->chain;
2161         }
2162         return NULL;
2163 }
2164
2165 qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qboolean warnmissing, qboolean fallback, int defaulttexflags)
2166 {
2167         int j;
2168         int texflagsmask;
2169         qboolean success = true;
2170         q3shaderinfo_t *shader;
2171         if (!name)
2172                 name = "";
2173         strlcpy(texture->name, name, sizeof(texture->name));
2174         shader = name[0] ? Mod_LookupQ3Shader(name) : NULL;
2175
2176         texflagsmask = ~0;
2177         if(!(defaulttexflags & TEXF_PICMIP))
2178                 texflagsmask &= ~TEXF_PICMIP;
2179         if(!(defaulttexflags & TEXF_COMPRESS))
2180                 texflagsmask &= ~TEXF_COMPRESS;
2181         // unless later loaded from the shader
2182         texture->offsetmapping = (mod_q3shader_default_offsetmapping.value) ? OFFSETMAPPING_DEFAULT : OFFSETMAPPING_OFF;
2183         texture->offsetscale = 1;
2184         texture->specularscalemod = 1;
2185         texture->specularpowermod = 1;
2186         // WHEN ADDING DEFAULTS HERE, REMEMBER TO SYNC TO SHADER LOADING ABOVE
2187         // HERE, AND Q1BSP LOADING
2188         // JUST GREP FOR "specularscalemod = 1".
2189
2190         if (shader)
2191         {
2192                 if (developer_loading.integer)
2193                         Con_Printf("%s: loaded shader for %s\n", loadmodel->name, name);
2194                 texture->surfaceparms = shader->surfaceparms;
2195
2196                 // allow disabling of picmip or compression by defaulttexflags
2197                 texture->textureflags = shader->textureflags & texflagsmask;
2198
2199                 if (shader->surfaceparms & Q3SURFACEPARM_SKY)
2200                 {
2201                         texture->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2202                         if (shader->skyboxname[0])
2203                         {
2204                                 // quake3 seems to append a _ to the skybox name, so this must do so as well
2205                                 dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
2206                         }
2207                 }
2208                 else if ((texture->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
2209                         texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2210                 else
2211                         texture->basematerialflags = MATERIALFLAG_WALL;
2212
2213                 if (shader->layers[0].alphatest)
2214                         texture->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
2215                 if (shader->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2216                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_NOCULLFACE;
2217                 if (shader->textureflags & Q3TEXTUREFLAG_POLYGONOFFSET)
2218                         texture->biaspolygonoffset -= 2;
2219                 if (shader->textureflags & Q3TEXTUREFLAG_REFRACTION)
2220                         texture->basematerialflags |= MATERIALFLAG_REFRACTION;
2221                 if (shader->textureflags & Q3TEXTUREFLAG_REFLECTION)
2222                         texture->basematerialflags |= MATERIALFLAG_REFLECTION;
2223                 if (shader->textureflags & Q3TEXTUREFLAG_WATERSHADER)
2224                         texture->basematerialflags |= MATERIALFLAG_WATERSHADER;
2225                 if (shader->textureflags & Q3TEXTUREFLAG_CAMERA)
2226                         texture->basematerialflags |= MATERIALFLAG_CAMERA;
2227                 texture->customblendfunc[0] = GL_ONE;
2228                 texture->customblendfunc[1] = GL_ZERO;
2229                 if (shader->numlayers > 0)
2230                 {
2231                         texture->customblendfunc[0] = shader->layers[0].blendfunc[0];
2232                         texture->customblendfunc[1] = shader->layers[0].blendfunc[1];
2233 /*
2234 Q3 shader blendfuncs actually used in the game (* = supported by DP)
2235 * additive               GL_ONE GL_ONE
2236 additive weird         GL_ONE GL_SRC_ALPHA
2237 additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
2238 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
2239 alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
2240 brighten               GL_DST_COLOR GL_ONE
2241 brighten               GL_ONE GL_SRC_COLOR
2242 brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
2243 brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
2244 * modulate               GL_DST_COLOR GL_ZERO
2245 * modulate               GL_ZERO GL_SRC_COLOR
2246 modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
2247 modulate inverse alpha GL_ZERO GL_SRC_ALPHA
2248 modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
2249 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
2250 * no blend               GL_ONE GL_ZERO
2251 nothing                GL_ZERO GL_ONE
2252 */
2253                         // if not opaque, figure out what blendfunc to use
2254                         if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
2255                         {
2256                                 if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
2257                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2258                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
2259                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2260                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
2261                                         texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2262                                 else
2263                                         texture->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2264                         }
2265                 }
2266                 if (!shader->lighting)
2267                         texture->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
2268                 if (shader->primarylayer >= 0)
2269                 {
2270                         q3shaderinfo_layer_t* primarylayer = shader->layers + shader->primarylayer;
2271                         // copy over many primarylayer parameters
2272                         texture->rgbgen = primarylayer->rgbgen;
2273                         texture->alphagen = primarylayer->alphagen;
2274                         texture->tcgen = primarylayer->tcgen;
2275                         memcpy(texture->tcmods, primarylayer->tcmods, sizeof(texture->tcmods));
2276                         // load the textures
2277                         texture->numskinframes = primarylayer->numframes;
2278                         texture->skinframerate = primarylayer->framerate;
2279                         for (j = 0;j < primarylayer->numframes;j++)
2280                         {
2281                                 if(cls.state == ca_dedicated)
2282                                 {
2283                                         texture->skinframes[j] = NULL;
2284                                 }
2285                                 else if (!(texture->skinframes[j] = R_SkinFrame_LoadExternal(primarylayer->texturename[j], primarylayer->texflags & texflagsmask, false)))
2286                                 {
2287                                         Con_Printf("^1%s:^7 could not load texture ^3\"%s\"^7 (frame %i) for shader ^2\"%s\"\n", loadmodel->name, primarylayer->texturename[j], j, texture->name);
2288                                         texture->skinframes[j] = R_SkinFrame_LoadMissing();
2289                                 }
2290                         }
2291                 }
2292                 if (shader->backgroundlayer >= 0)
2293                 {
2294                         q3shaderinfo_layer_t* backgroundlayer = shader->layers + shader->backgroundlayer;
2295                         // copy over one secondarylayer parameter
2296                         memcpy(texture->backgroundtcmods, backgroundlayer->tcmods, sizeof(texture->backgroundtcmods));
2297                         // load the textures
2298                         texture->backgroundnumskinframes = backgroundlayer->numframes;
2299                         texture->backgroundskinframerate = backgroundlayer->framerate;
2300                         for (j = 0;j < backgroundlayer->numframes;j++)
2301                         {
2302                                 if(cls.state == ca_dedicated)
2303                                 {
2304                                         texture->skinframes[j] = NULL;
2305                                 }
2306                                 else if (!(texture->backgroundskinframes[j] = R_SkinFrame_LoadExternal(backgroundlayer->texturename[j], backgroundlayer->texflags & texflagsmask, false)))
2307                                 {
2308                                         Con_Printf("^1%s:^7 could not load texture ^3\"%s\"^7 (background frame %i) for shader ^2\"%s\"\n", loadmodel->name, backgroundlayer->texturename[j], j, texture->name);
2309                                         texture->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
2310                                 }
2311                         }
2312                 }
2313                 if (shader->dpshadow)
2314                         texture->basematerialflags &= ~MATERIALFLAG_NOSHADOW;
2315                 if (shader->dpnoshadow)
2316                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW;
2317                 memcpy(texture->deforms, shader->deforms, sizeof(texture->deforms));
2318                 texture->reflectmin = shader->reflectmin;
2319                 texture->reflectmax = shader->reflectmax;
2320                 texture->refractfactor = shader->refractfactor;
2321                 Vector4Copy(shader->refractcolor4f, texture->refractcolor4f);
2322                 texture->reflectfactor = shader->reflectfactor;
2323                 Vector4Copy(shader->reflectcolor4f, texture->reflectcolor4f);
2324                 texture->r_water_wateralpha = shader->r_water_wateralpha;
2325                 texture->offsetmapping = shader->offsetmapping;
2326                 texture->offsetscale = shader->offsetscale;
2327                 texture->specularscalemod = shader->specularscalemod;
2328                 texture->specularpowermod = shader->specularpowermod;
2329                 if (shader->dpreflectcube[0])
2330                         texture->reflectcubetexture = R_GetCubemap(shader->dpreflectcube);
2331
2332                 // set up default supercontents (on q3bsp this is overridden by the q3bsp loader)
2333                 texture->supercontents = SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
2334                 if (shader->surfaceparms & Q3SURFACEPARM_LAVA         ) texture->supercontents  = SUPERCONTENTS_LAVA         ;
2335                 if (shader->surfaceparms & Q3SURFACEPARM_SLIME        ) texture->supercontents  = SUPERCONTENTS_SLIME        ;
2336                 if (shader->surfaceparms & Q3SURFACEPARM_WATER        ) texture->supercontents  = SUPERCONTENTS_WATER        ;
2337                 if (shader->surfaceparms & Q3SURFACEPARM_NONSOLID     ) texture->supercontents  = 0                          ;
2338                 if (shader->surfaceparms & Q3SURFACEPARM_PLAYERCLIP   ) texture->supercontents  = SUPERCONTENTS_PLAYERCLIP   ;
2339                 if (shader->surfaceparms & Q3SURFACEPARM_BOTCLIP      ) texture->supercontents  = SUPERCONTENTS_MONSTERCLIP  ;
2340                 if (shader->surfaceparms & Q3SURFACEPARM_SKY          ) texture->supercontents  = SUPERCONTENTS_SKY          ;
2341
2342         //      if (shader->surfaceparms & Q3SURFACEPARM_ALPHASHADOW  ) texture->supercontents |= SUPERCONTENTS_ALPHASHADOW  ;
2343         //      if (shader->surfaceparms & Q3SURFACEPARM_AREAPORTAL   ) texture->supercontents |= SUPERCONTENTS_AREAPORTAL   ;
2344         //      if (shader->surfaceparms & Q3SURFACEPARM_CLUSTERPORTAL) texture->supercontents |= SUPERCONTENTS_CLUSTERPORTAL;
2345         //      if (shader->surfaceparms & Q3SURFACEPARM_DETAIL       ) texture->supercontents |= SUPERCONTENTS_DETAIL       ;
2346                 if (shader->surfaceparms & Q3SURFACEPARM_DONOTENTER   ) texture->supercontents |= SUPERCONTENTS_DONOTENTER   ;
2347         //      if (shader->surfaceparms & Q3SURFACEPARM_FOG          ) texture->supercontents |= SUPERCONTENTS_FOG          ;
2348                 if (shader->surfaceparms & Q3SURFACEPARM_LAVA         ) texture->supercontents |= SUPERCONTENTS_LAVA         ;
2349         //      if (shader->surfaceparms & Q3SURFACEPARM_LIGHTFILTER  ) texture->supercontents |= SUPERCONTENTS_LIGHTFILTER  ;
2350         //      if (shader->surfaceparms & Q3SURFACEPARM_METALSTEPS   ) texture->supercontents |= SUPERCONTENTS_METALSTEPS   ;
2351         //      if (shader->surfaceparms & Q3SURFACEPARM_NODAMAGE     ) texture->supercontents |= SUPERCONTENTS_NODAMAGE     ;
2352         //      if (shader->surfaceparms & Q3SURFACEPARM_NODLIGHT     ) texture->supercontents |= SUPERCONTENTS_NODLIGHT     ;
2353         //      if (shader->surfaceparms & Q3SURFACEPARM_NODRAW       ) texture->supercontents |= SUPERCONTENTS_NODRAW       ;
2354                 if (shader->surfaceparms & Q3SURFACEPARM_NODROP       ) texture->supercontents |= SUPERCONTENTS_NODROP       ;
2355         //      if (shader->surfaceparms & Q3SURFACEPARM_NOIMPACT     ) texture->supercontents |= SUPERCONTENTS_NOIMPACT     ;
2356         //      if (shader->surfaceparms & Q3SURFACEPARM_NOLIGHTMAP   ) texture->supercontents |= SUPERCONTENTS_NOLIGHTMAP   ;
2357         //      if (shader->surfaceparms & Q3SURFACEPARM_NOMARKS      ) texture->supercontents |= SUPERCONTENTS_NOMARKS      ;
2358         //      if (shader->surfaceparms & Q3SURFACEPARM_NOMIPMAPS    ) texture->supercontents |= SUPERCONTENTS_NOMIPMAPS    ;
2359                 if (shader->surfaceparms & Q3SURFACEPARM_NONSOLID     ) texture->supercontents &=~SUPERCONTENTS_SOLID        ;
2360         //      if (shader->surfaceparms & Q3SURFACEPARM_ORIGIN       ) texture->supercontents |= SUPERCONTENTS_ORIGIN       ;
2361                 if (shader->surfaceparms & Q3SURFACEPARM_PLAYERCLIP   ) texture->supercontents |= SUPERCONTENTS_PLAYERCLIP   ;
2362                 if (shader->surfaceparms & Q3SURFACEPARM_SKY          ) texture->supercontents |= SUPERCONTENTS_SKY          ;
2363         //      if (shader->surfaceparms & Q3SURFACEPARM_SLICK        ) texture->supercontents |= SUPERCONTENTS_SLICK        ;
2364                 if (shader->surfaceparms & Q3SURFACEPARM_SLIME        ) texture->supercontents |= SUPERCONTENTS_SLIME        ;
2365         //      if (shader->surfaceparms & Q3SURFACEPARM_STRUCTURAL   ) texture->supercontents |= SUPERCONTENTS_STRUCTURAL   ;
2366         //      if (shader->surfaceparms & Q3SURFACEPARM_TRANS        ) texture->supercontents |= SUPERCONTENTS_TRANS        ;
2367                 if (shader->surfaceparms & Q3SURFACEPARM_WATER        ) texture->supercontents |= SUPERCONTENTS_WATER        ;
2368         //      if (shader->surfaceparms & Q3SURFACEPARM_POINTLIGHT   ) texture->supercontents |= SUPERCONTENTS_POINTLIGHT   ;
2369         //      if (shader->surfaceparms & Q3SURFACEPARM_HINT         ) texture->supercontents |= SUPERCONTENTS_HINT         ;
2370         //      if (shader->surfaceparms & Q3SURFACEPARM_DUST         ) texture->supercontents |= SUPERCONTENTS_DUST         ;
2371                 if (shader->surfaceparms & Q3SURFACEPARM_BOTCLIP      ) texture->supercontents |= SUPERCONTENTS_BOTCLIP      | SUPERCONTENTS_MONSTERCLIP;
2372         //      if (shader->surfaceparms & Q3SURFACEPARM_LIGHTGRID    ) texture->supercontents |= SUPERCONTENTS_LIGHTGRID    ;
2373         //      if (shader->surfaceparms & Q3SURFACEPARM_ANTIPORTAL   ) texture->supercontents |= SUPERCONTENTS_ANTIPORTAL   ;
2374
2375                 if (shader->dpmeshcollisions)
2376                         texture->basematerialflags |= MATERIALFLAG_MESHCOLLISIONS;
2377         }
2378         else if (!strcmp(texture->name, "noshader") || !texture->name[0])
2379         {
2380                 if (developer_extra.integer)
2381                         Con_DPrintf("^1%s:^7 using fallback noshader material for ^3\"%s\"\n", loadmodel->name, name);
2382                 texture->surfaceparms = 0;
2383                 texture->supercontents = SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
2384         }
2385         else if (!strcmp(texture->name, "common/nodraw") || !strcmp(texture->name, "textures/common/nodraw"))
2386         {
2387                 if (developer_extra.integer)
2388                         Con_DPrintf("^1%s:^7 using fallback nodraw material for ^3\"%s\"\n", loadmodel->name, name);
2389                 texture->surfaceparms = 0;
2390                 texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2391                 texture->supercontents = SUPERCONTENTS_SOLID;
2392         }
2393         else
2394         {
2395                 if (developer_extra.integer)
2396                         Con_DPrintf("^1%s:^7 No shader found for texture ^3\"%s\"\n", loadmodel->name, texture->name);
2397                 texture->surfaceparms = 0;
2398                 if (texture->surfaceflags & Q3SURFACEFLAG_NODRAW)
2399                 {
2400                         texture->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2401                         texture->supercontents = SUPERCONTENTS_SOLID;
2402                 }
2403                 else if (texture->surfaceflags & Q3SURFACEFLAG_SKY)
2404                 {
2405                         texture->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2406                         texture->supercontents = SUPERCONTENTS_SKY;
2407                 }
2408                 else
2409                 {
2410                         texture->basematerialflags |= MATERIALFLAG_WALL;
2411                         texture->supercontents = SUPERCONTENTS_SOLID | SUPERCONTENTS_OPAQUE;
2412                 }
2413                 texture->numskinframes = 1;
2414                 if(cls.state == ca_dedicated)
2415                 {
2416                         texture->skinframes[0] = NULL;
2417                 }
2418                 else
2419                 {
2420                         if (fallback)
2421                         {
2422                                 if ((texture->skinframes[0] = R_SkinFrame_LoadExternal(texture->name, defaulttexflags, false)))
2423                                 {
2424                                         if(texture->skinframes[0]->hasalpha)
2425                                                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2426                                 }
2427                                 else
2428                                         success = false;
2429                         }
2430                         else
2431                                 success = false;
2432                         if (!success && warnmissing)
2433                                 Con_Printf("^1%s:^7 could not load texture ^3\"%s\"\n", loadmodel->name, texture->name);
2434                 }
2435         }
2436         // init the animation variables
2437         texture->currentframe = texture;
2438         if (texture->numskinframes < 1)
2439                 texture->numskinframes = 1;
2440         if (!texture->skinframes[0])
2441                 texture->skinframes[0] = R_SkinFrame_LoadMissing();
2442         texture->currentskinframe = texture->skinframes[0];
2443         texture->backgroundcurrentskinframe = texture->backgroundskinframes[0];
2444         return success;
2445 }
2446
2447 skinfile_t *Mod_LoadSkinFiles(void)
2448 {
2449         int i, words, line, wordsoverflow;
2450         char *text;
2451         const char *data;
2452         skinfile_t *skinfile = NULL, *first = NULL;
2453         skinfileitem_t *skinfileitem;
2454         char word[10][MAX_QPATH];
2455
2456 /*
2457 sample file:
2458 U_bodyBox,models/players/Legoman/BikerA2.tga
2459 U_RArm,models/players/Legoman/BikerA1.tga
2460 U_LArm,models/players/Legoman/BikerA1.tga
2461 U_armor,common/nodraw
2462 U_sword,common/nodraw
2463 U_shield,common/nodraw
2464 U_homb,common/nodraw
2465 U_backpack,common/nodraw
2466 U_colcha,common/nodraw
2467 tag_head,
2468 tag_weapon,
2469 tag_torso,
2470 */
2471         memset(word, 0, sizeof(word));
2472         for (i = 0;i < 256 && (data = text = (char *)FS_LoadFile(va("%s_%i.skin", loadmodel->name, i), tempmempool, true, NULL));i++)
2473         {
2474                 // If it's the first file we parse
2475                 if (skinfile == NULL)
2476                 {
2477                         skinfile = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2478                         first = skinfile;
2479                 }
2480                 else
2481                 {
2482                         skinfile->next = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2483                         skinfile = skinfile->next;
2484                 }
2485                 skinfile->next = NULL;
2486
2487                 for(line = 0;;line++)
2488                 {
2489                         // parse line
2490                         if (!COM_ParseToken_QuakeC(&data, true))
2491                                 break;
2492                         if (!strcmp(com_token, "\n"))
2493                                 continue;
2494                         words = 0;
2495                         wordsoverflow = false;
2496                         do
2497                         {
2498                                 if (words < 10)
2499                                         strlcpy(word[words++], com_token, sizeof (word[0]));
2500                                 else
2501                                         wordsoverflow = true;
2502                         }
2503                         while (COM_ParseToken_QuakeC(&data, true) && strcmp(com_token, "\n"));
2504                         if (wordsoverflow)
2505                         {
2506                                 Con_Printf("Mod_LoadSkinFiles: parsing error in file \"%s_%i.skin\" on line #%i: line with too many statements, skipping\n", loadmodel->name, i, line);
2507                                 continue;
2508                         }
2509                         // words is always >= 1
2510                         if (!strcmp(word[0], "replace"))
2511                         {
2512                                 if (words == 3)
2513                                 {
2514                                         if (developer_loading.integer)
2515                                                 Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[1], word[2]);
2516                                         skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2517                                         skinfileitem->next = skinfile->items;
2518                                         skinfile->items = skinfileitem;
2519                                         strlcpy (skinfileitem->name, word[1], sizeof (skinfileitem->name));
2520                                         strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2521                                 }
2522                                 else
2523                                         Con_Printf("Mod_LoadSkinFiles: parsing error in file \"%s_%i.skin\" on line #%i: wrong number of parameters to command \"%s\", see documentation in DP_GFX_SKINFILES extension in dpextensions.qc\n", loadmodel->name, i, line, word[0]);
2524                         }
2525                         else if (words >= 2 && !strncmp(word[0], "tag_", 4))
2526                         {
2527                                 // tag name, like "tag_weapon,"
2528                                 // not used for anything (not even in Quake3)
2529                         }
2530                         else if (words >= 2 && !strcmp(word[1], ","))
2531                         {
2532                                 // mesh shader name, like "U_RArm,models/players/Legoman/BikerA1.tga"
2533                                 if (developer_loading.integer)
2534                                         Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[0], word[2]);
2535                                 skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2536                                 skinfileitem->next = skinfile->items;
2537                                 skinfile->items = skinfileitem;
2538                                 strlcpy (skinfileitem->name, word[0], sizeof (skinfileitem->name));
2539                                 strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2540                         }
2541                         else
2542                                 Con_Printf("Mod_LoadSkinFiles: parsing error in file \"%s_%i.skin\" on line #%i: does not look like tag or mesh specification, or replace command, see documentation in DP_GFX_SKINFILES extension in dpextensions.qc\n", loadmodel->name, i, line);
2543                 }
2544                 Mem_Free(text);
2545         }
2546         if (i)
2547                 loadmodel->numskins = i;
2548         return first;
2549 }
2550
2551 void Mod_FreeSkinFiles(skinfile_t *skinfile)
2552 {
2553         skinfile_t *next;
2554         skinfileitem_t *skinfileitem, *nextitem;
2555         for (;skinfile;skinfile = next)
2556         {
2557                 next = skinfile->next;
2558                 for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = nextitem)
2559                 {
2560                         nextitem = skinfileitem->next;
2561                         Mem_Free(skinfileitem);
2562                 }
2563                 Mem_Free(skinfile);
2564         }
2565 }
2566
2567 int Mod_CountSkinFiles(skinfile_t *skinfile)
2568 {
2569         int i;
2570         for (i = 0;skinfile;skinfile = skinfile->next, i++);
2571         return i;
2572 }
2573
2574 void Mod_SnapVertices(int numcomponents, int numvertices, float *vertices, float snap)
2575 {
2576         int i;
2577         double isnap = 1.0 / snap;
2578         for (i = 0;i < numvertices*numcomponents;i++)
2579                 vertices[i] = floor(vertices[i]*isnap)*snap;
2580 }
2581
2582 int Mod_RemoveDegenerateTriangles(int numtriangles, const int *inelement3i, int *outelement3i, const float *vertex3f)
2583 {
2584         int i, outtriangles;
2585         float edgedir1[3], edgedir2[3], temp[3];
2586         // a degenerate triangle is one with no width (thickness, surface area)
2587         // these are characterized by having all 3 points colinear (along a line)
2588         // or having two points identical
2589         // the simplest check is to calculate the triangle's area
2590         for (i = 0, outtriangles = 0;i < numtriangles;i++, inelement3i += 3)
2591         {
2592                 // calculate first edge
2593                 VectorSubtract(vertex3f + inelement3i[1] * 3, vertex3f + inelement3i[0] * 3, edgedir1);
2594                 VectorSubtract(vertex3f + inelement3i[2] * 3, vertex3f + inelement3i[0] * 3, edgedir2);
2595                 CrossProduct(edgedir1, edgedir2, temp);
2596                 if (VectorLength2(temp) < 0.001f)
2597                         continue; // degenerate triangle (no area)
2598                 // valid triangle (has area)
2599                 VectorCopy(inelement3i, outelement3i);
2600                 outelement3i += 3;
2601                 outtriangles++;
2602         }
2603         return outtriangles;
2604 }
2605
2606 void Mod_VertexRangeFromElements(int numelements, const int *elements, int *firstvertexpointer, int *lastvertexpointer)
2607 {
2608         int i, e;
2609         int firstvertex, lastvertex;
2610         if (numelements > 0 && elements)
2611         {
2612                 firstvertex = lastvertex = elements[0];
2613                 for (i = 1;i < numelements;i++)
2614                 {
2615                         e = elements[i];
2616                         firstvertex = min(firstvertex, e);
2617                         lastvertex = max(lastvertex, e);
2618                 }
2619         }
2620         else
2621                 firstvertex = lastvertex = 0;
2622         if (firstvertexpointer)
2623                 *firstvertexpointer = firstvertex;
2624         if (lastvertexpointer)
2625                 *lastvertexpointer = lastvertex;
2626 }
2627
2628 void Mod_MakeSortedSurfaces(dp_model_t *mod)
2629 {
2630         // make an optimal set of texture-sorted batches to draw...
2631         int j, t;
2632         int *firstsurfacefortexture;
2633         int *numsurfacesfortexture;
2634         if (!mod->sortedmodelsurfaces)
2635                 mod->sortedmodelsurfaces = (int *) Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
2636         firstsurfacefortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*firstsurfacefortexture));
2637         numsurfacesfortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*numsurfacesfortexture));
2638         memset(numsurfacesfortexture, 0, mod->num_textures * sizeof(*numsurfacesfortexture));
2639         for (j = 0;j < mod->nummodelsurfaces;j++)
2640         {
2641                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2642                 int t = (int)(surface->texture - mod->data_textures);
2643                 numsurfacesfortexture[t]++;
2644         }
2645         j = 0;
2646         for (t = 0;t < mod->num_textures;t++)
2647         {
2648                 firstsurfacefortexture[t] = j;
2649                 j += numsurfacesfortexture[t];
2650         }
2651         for (j = 0;j < mod->nummodelsurfaces;j++)
2652         {
2653                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2654                 int t = (int)(surface->texture - mod->data_textures);
2655                 mod->sortedmodelsurfaces[firstsurfacefortexture[t]++] = j + mod->firstmodelsurface;
2656         }
2657         Mem_Free(firstsurfacefortexture);
2658         Mem_Free(numsurfacesfortexture);
2659 }
2660
2661 void Mod_BuildVBOs(void)
2662 {
2663         if (!loadmodel->surfmesh.num_vertices)
2664                 return;
2665
2666         if (gl_paranoid.integer && loadmodel->surfmesh.data_element3s && loadmodel->surfmesh.data_element3i)
2667         {
2668                 int i;
2669                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2670                 {
2671                         if (loadmodel->surfmesh.data_element3s[i] != loadmodel->surfmesh.data_element3i[i])
2672                         {
2673                                 Con_Printf("Mod_BuildVBOs: element %u is incorrect (%u should be %u)\n", i, loadmodel->surfmesh.data_element3s[i], loadmodel->surfmesh.data_element3i[i]);
2674                                 loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2675                         }
2676                 }
2677         }
2678
2679         // build r_vertexmesh_t array
2680         // (compressed interleaved array for faster rendering)
2681         if (!loadmodel->surfmesh.vertexmesh)
2682         {
2683                 int vertexindex;
2684                 int numvertices = loadmodel->surfmesh.num_vertices;
2685                 r_vertexmesh_t *vertexmesh;
2686                 loadmodel->surfmesh.vertexmesh = vertexmesh = (r_vertexmesh_t*)Mem_Alloc(loadmodel->mempool, numvertices * sizeof(*loadmodel->surfmesh.vertexmesh));
2687                 for (vertexindex = 0;vertexindex < numvertices;vertexindex++, vertexmesh++)
2688                 {
2689                         VectorCopy(loadmodel->surfmesh.data_vertex3f + 3*vertexindex, vertexmesh->vertex3f);
2690                         VectorScale(loadmodel->surfmesh.data_svector3f + 3*vertexindex, 1.0f, vertexmesh->svector3f);
2691                         VectorScale(loadmodel->surfmesh.data_tvector3f + 3*vertexindex, 1.0f, vertexmesh->tvector3f);
2692                         VectorScale(loadmodel->surfmesh.data_normal3f + 3*vertexindex, 1.0f, vertexmesh->normal3f);
2693                         if (loadmodel->surfmesh.data_lightmapcolor4f)
2694                                 Vector4Scale(loadmodel->surfmesh.data_lightmapcolor4f + 4*vertexindex, 255.0f, vertexmesh->color4ub);
2695                         Vector2Copy(loadmodel->surfmesh.data_texcoordtexture2f + 2*vertexindex, vertexmesh->texcoordtexture2f);
2696                         if (loadmodel->surfmesh.data_texcoordlightmap2f)
2697                                 Vector2Scale(loadmodel->surfmesh.data_texcoordlightmap2f + 2*vertexindex, 1.0f, vertexmesh->texcoordlightmap2f);
2698                 }
2699         }
2700
2701         // build r_vertexposition_t array
2702         if (!loadmodel->surfmesh.vertexposition)
2703         {
2704                 int vertexindex;
2705                 int numvertices = loadmodel->surfmesh.num_vertices;
2706                 r_vertexposition_t *vertexposition;
2707                 loadmodel->surfmesh.vertexposition = vertexposition = (r_vertexposition_t*)Mem_Alloc(loadmodel->mempool, numvertices * sizeof(*loadmodel->surfmesh.vertexposition));
2708                 for (vertexindex = 0;vertexindex < numvertices;vertexindex++, vertexposition++)
2709                         VectorCopy(loadmodel->surfmesh.data_vertex3f + 3*vertexindex, vertexposition->vertex3f);
2710         }
2711
2712         // upload r_vertexmesh_t array as a buffer
2713         if (loadmodel->surfmesh.vertexmesh && !loadmodel->surfmesh.vertexmeshbuffer)
2714                 loadmodel->surfmesh.vertexmeshbuffer = R_Mesh_CreateMeshBuffer(loadmodel->surfmesh.vertexmesh, loadmodel->surfmesh.num_vertices * sizeof(*loadmodel->surfmesh.vertexmesh), loadmodel->name, false, false);
2715
2716         // upload r_vertexposition_t array as a buffer
2717         if (loadmodel->surfmesh.vertexposition && !loadmodel->surfmesh.vertexpositionbuffer)
2718                 loadmodel->surfmesh.vertexpositionbuffer = R_Mesh_CreateMeshBuffer(loadmodel->surfmesh.vertexposition, loadmodel->surfmesh.num_vertices * sizeof(*loadmodel->surfmesh.vertexposition), loadmodel->name, false, false);
2719
2720         // upload short indices as a buffer
2721         if (loadmodel->surfmesh.data_element3s && !loadmodel->surfmesh.data_element3s_indexbuffer)
2722                 loadmodel->surfmesh.data_element3s_indexbuffer = R_Mesh_CreateMeshBuffer(loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles * sizeof(short[3]), loadmodel->name, true, false);
2723
2724         // upload int indices as a buffer
2725         if (loadmodel->surfmesh.data_element3i && !loadmodel->surfmesh.data_element3i_indexbuffer && !loadmodel->surfmesh.data_element3s)
2726                 loadmodel->surfmesh.data_element3i_indexbuffer = R_Mesh_CreateMeshBuffer(loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles * sizeof(int[3]), loadmodel->name, true, false);
2727
2728         // only build a vbo if one has not already been created (this is important for brush models which load specially)
2729         // vertex buffer is several arrays and we put them in the same buffer
2730         //
2731         // is this wise?  the texcoordtexture2f array is used with dynamic
2732         // vertex/svector/tvector/normal when rendering animated models, on the
2733         // other hand animated models don't use a lot of vertices anyway...
2734         if (!loadmodel->surfmesh.vbo_vertexbuffer)
2735         {
2736                 size_t size;
2737                 unsigned char *mem;
2738                 size = 0;
2739                 loadmodel->surfmesh.vbooffset_vertex3f           = size;if (loadmodel->surfmesh.data_vertex3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2740                 loadmodel->surfmesh.vbooffset_svector3f          = size;if (loadmodel->surfmesh.data_svector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2741                 loadmodel->surfmesh.vbooffset_tvector3f          = size;if (loadmodel->surfmesh.data_tvector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2742                 loadmodel->surfmesh.vbooffset_normal3f           = size;if (loadmodel->surfmesh.data_normal3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2743                 loadmodel->surfmesh.vbooffset_texcoordtexture2f  = size;if (loadmodel->surfmesh.data_texcoordtexture2f ) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2744                 loadmodel->surfmesh.vbooffset_texcoordlightmap2f = size;if (loadmodel->surfmesh.data_texcoordlightmap2f) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2745                 loadmodel->surfmesh.vbooffset_lightmapcolor4f    = size;if (loadmodel->surfmesh.data_lightmapcolor4f   ) size += loadmodel->surfmesh.num_vertices * sizeof(float[4]);
2746                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
2747                 if (loadmodel->surfmesh.data_vertex3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_vertex3f          , loadmodel->surfmesh.data_vertex3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2748                 if (loadmodel->surfmesh.data_svector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_svector3f         , loadmodel->surfmesh.data_svector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2749                 if (loadmodel->surfmesh.data_tvector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_tvector3f         , loadmodel->surfmesh.data_tvector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2750                 if (loadmodel->surfmesh.data_normal3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_normal3f          , loadmodel->surfmesh.data_normal3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2751                 if (loadmodel->surfmesh.data_texcoordtexture2f ) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordtexture2f , loadmodel->surfmesh.data_texcoordtexture2f , loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2752                 if (loadmodel->surfmesh.data_texcoordlightmap2f) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordlightmap2f, loadmodel->surfmesh.data_texcoordlightmap2f, loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2753                 if (loadmodel->surfmesh.data_lightmapcolor4f   ) memcpy(mem + loadmodel->surfmesh.vbooffset_lightmapcolor4f   , loadmodel->surfmesh.data_lightmapcolor4f   , loadmodel->surfmesh.num_vertices * sizeof(float[4]));
2754                 loadmodel->surfmesh.vbo_vertexbuffer = R_Mesh_CreateMeshBuffer(mem, size, loadmodel->name, false, false);
2755                 Mem_Free(mem);
2756         }
2757 }
2758
2759 static void Mod_Decompile_OBJ(dp_model_t *model, const char *filename, const char *mtlfilename, const char *originalfilename)
2760 {
2761         int vertexindex, surfaceindex, triangleindex, textureindex, countvertices = 0, countsurfaces = 0, countfaces = 0, counttextures = 0;
2762         int a, b, c;
2763         const char *texname;
2764         const int *e;
2765         const float *v, *vn, *vt;
2766         size_t l;
2767         size_t outbufferpos = 0;
2768         size_t outbuffermax = 0x100000;
2769         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2770         const msurface_t *surface;
2771         const int maxtextures = 256;
2772         char *texturenames = (char *) Z_Malloc(maxtextures * MAX_QPATH);
2773
2774         // construct the mtllib file
2775         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "# mtllib for %s exported by darkplaces engine\n", originalfilename);
2776         if (l > 0)
2777                 outbufferpos += l;
2778         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2779         {
2780                 countsurfaces++;
2781                 countvertices += surface->num_vertices;
2782                 countfaces += surface->num_triangles;
2783                 texname = (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default";
2784                 for (textureindex = 0;textureindex < counttextures;textureindex++)
2785                         if (!strcmp(texturenames + textureindex * MAX_QPATH, texname))
2786                                 break;
2787                 if (textureindex < counttextures)
2788                         continue; // already wrote this material entry
2789                 if (textureindex >= maxtextures)
2790                         continue; // just a precaution
2791                 textureindex = counttextures++;
2792                 strlcpy(texturenames + textureindex * MAX_QPATH, texname, MAX_QPATH);
2793                 if (outbufferpos >= outbuffermax >> 1)
2794                 {
2795                         outbuffermax *= 2;
2796                         oldbuffer = outbuffer;
2797                         outbuffer = (char *) Z_Malloc(outbuffermax);
2798                         memcpy(outbuffer, oldbuffer, outbufferpos);
2799                         Z_Free(oldbuffer);
2800                 }
2801                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "newmtl %s\nNs 96.078431\nKa 0 0 0\nKd 0.64 0.64 0.64\nKs 0.5 0.5 0.5\nNi 1\nd 1\nillum 2\nmap_Kd %s%s\n\n", texname, texname, strstr(texname, ".tga") ? "" : ".tga");
2802                 if (l > 0)
2803                         outbufferpos += l;
2804         }
2805
2806         // write the mtllib file
2807         FS_WriteFile(mtlfilename, outbuffer, outbufferpos);
2808         outbufferpos = 0;
2809
2810         // construct the obj file
2811         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "# model exported from %s by darkplaces engine\n# %i vertices, %i faces, %i surfaces\nmtllib %s\n", originalfilename, countvertices, countfaces, countsurfaces, mtlfilename);
2812         if (l > 0)
2813                 outbufferpos += l;
2814         for (vertexindex = 0, v = model->surfmesh.data_vertex3f, vn = model->surfmesh.data_normal3f, vt = model->surfmesh.data_texcoordtexture2f;vertexindex < model->surfmesh.num_vertices;vertexindex++, v += 3, vn += 3, vt += 2)
2815         {
2816                 if (outbufferpos >= outbuffermax >> 1)
2817                 {
2818                         outbuffermax *= 2;
2819                         oldbuffer = outbuffer;
2820                         outbuffer = (char *) Z_Malloc(outbuffermax);
2821                         memcpy(outbuffer, oldbuffer, outbufferpos);
2822                         Z_Free(oldbuffer);
2823                 }
2824                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "v %f %f %f\nvn %f %f %f\nvt %f %f\n", v[0], v[2], -v[1], vn[0], vn[2], -vn[1], vt[0], 1-vt[1]);
2825                 if (l > 0)
2826                         outbufferpos += l;
2827         }
2828         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2829         {
2830                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "usemtl %s\n", (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default");
2831                 if (l > 0)
2832                         outbufferpos += l;
2833                 for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2834                 {
2835                         if (outbufferpos >= outbuffermax >> 1)
2836                         {
2837                                 outbuffermax *= 2;
2838                                 oldbuffer = outbuffer;
2839                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2840                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2841                                 Z_Free(oldbuffer);
2842                         }
2843                         a = e[0]+1;
2844                         b = e[2]+1;
2845                         c = e[1]+1;
2846                         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "f %i/%i/%i %i/%i/%i %i/%i/%i\n", a,a,a,b,b,b,c,c,c);
2847                         if (l > 0)
2848                                 outbufferpos += l;
2849                 }
2850         }
2851
2852         // write the obj file
2853         FS_WriteFile(filename, outbuffer, outbufferpos);
2854
2855         // clean up
2856         Z_Free(outbuffer);
2857         Z_Free(texturenames);
2858
2859         // print some stats
2860         Con_Printf("Wrote %s (%i bytes, %i vertices, %i faces, %i surfaces with %i distinct textures)\n", filename, (int)outbufferpos, countvertices, countfaces, countsurfaces, counttextures);
2861 }
2862
2863 static void Mod_Decompile_SMD(dp_model_t *model, const char *filename, int firstpose, int numposes, qboolean writetriangles)
2864 {
2865         int countnodes = 0, counttriangles = 0, countframes = 0;
2866         int surfaceindex;
2867         int triangleindex;
2868         int transformindex;
2869         int poseindex;
2870         int cornerindex;
2871         const int *e;
2872         size_t l;
2873         size_t outbufferpos = 0;
2874         size_t outbuffermax = 0x100000;
2875         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2876         const msurface_t *surface;
2877         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "version 1\nnodes\n");
2878         if (l > 0)
2879                 outbufferpos += l;
2880         for (transformindex = 0;transformindex < model->num_bones;transformindex++)
2881         {
2882                 if (outbufferpos >= outbuffermax >> 1)
2883                 {
2884                         outbuffermax *= 2;
2885                         oldbuffer = outbuffer;
2886                         outbuffer = (char *) Z_Malloc(outbuffermax);
2887                         memcpy(outbuffer, oldbuffer, outbufferpos);
2888                         Z_Free(oldbuffer);
2889                 }
2890                 countnodes++;
2891                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i \"%s\" %3i\n", transformindex, model->data_bones[transformindex].name, model->data_bones[transformindex].parent);
2892                 if (l > 0)
2893                         outbufferpos += l;
2894         }
2895         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\nskeleton\n");
2896         if (l > 0)
2897                 outbufferpos += l;
2898         for (poseindex = 0;poseindex < numposes;poseindex++)
2899         {
2900                 countframes++;
2901                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "time %i\n", poseindex);
2902                 if (l > 0)
2903                         outbufferpos += l;
2904                 for (transformindex = 0;transformindex < model->num_bones;transformindex++)
2905                 {
2906                         float angles[3];
2907                         float mtest[4][3];
2908                         matrix4x4_t posematrix;
2909                         if (outbufferpos >= outbuffermax >> 1)
2910                         {
2911                                 outbuffermax *= 2;
2912                                 oldbuffer = outbuffer;
2913                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2914                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2915                                 Z_Free(oldbuffer);
2916                         }
2917
2918                         // strangely the smd angles are for a transposed matrix, so we
2919                         // have to generate a transposed matrix, then convert that...
2920                         Matrix4x4_FromBonePose6s(&posematrix, model->num_posescale, model->data_poses6s + 6*(model->num_bones * poseindex + transformindex));
2921                         Matrix4x4_ToArray12FloatGL(&posematrix, mtest[0]);
2922                         AnglesFromVectors(angles, mtest[0], mtest[2], false);
2923                         if (angles[0] >= 180) angles[0] -= 360;
2924                         if (angles[1] >= 180) angles[1] -= 360;
2925                         if (angles[2] >= 180) angles[2] -= 360;
2926
2927 #if 0
2928 {
2929                         float a = DEG2RAD(angles[ROLL]);
2930                         float b = DEG2RAD(angles[PITCH]);
2931                         float c = DEG2RAD(angles[YAW]);
2932                         float cy, sy, cp, sp, cr, sr;
2933                         float test[4][3];
2934                         // smd matrix construction, for comparing
2935                         sy = sin(c);
2936                         cy = cos(c);
2937                         sp = sin(b);
2938                         cp = cos(b);
2939                         sr = sin(a);
2940                         cr = cos(a);
2941
2942                         test[0][0] = cp*cy;
2943                         test[0][1] = cp*sy;
2944                         test[0][2] = -sp;
2945                         test[1][0] = sr*sp*cy+cr*-sy;
2946                         test[1][1] = sr*sp*sy+cr*cy;
2947                         test[1][2] = sr*cp;
2948                         test[2][0] = (cr*sp*cy+-sr*-sy);
2949                         test[2][1] = (cr*sp*sy+-sr*cy);
2950                         test[2][2] = cr*cp;
2951                         test[3][0] = pose[9];
2952                         test[3][1] = pose[10];
2953                         test[3][2] = pose[11];
2954 }
2955 #endif
2956                         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i %f %f %f %f %f %f\n", transformindex, mtest[3][0], mtest[3][1], mtest[3][2], DEG2RAD(angles[ROLL]), DEG2RAD(angles[PITCH]), DEG2RAD(angles[YAW]));
2957                         if (l > 0)
2958                                 outbufferpos += l;
2959                 }
2960         }
2961         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
2962         if (l > 0)
2963                 outbufferpos += l;
2964         if (writetriangles)
2965         {
2966                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "triangles\n");
2967                 if (l > 0)
2968                         outbufferpos += l;
2969                 for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2970                 {
2971                         for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2972                         {
2973                                 counttriangles++;
2974                                 if (outbufferpos >= outbuffermax >> 1)
2975                                 {
2976                                         outbuffermax *= 2;
2977                                         oldbuffer = outbuffer;
2978                                         outbuffer = (char *) Z_Malloc(outbuffermax);
2979                                         memcpy(outbuffer, oldbuffer, outbufferpos);
2980                                         Z_Free(oldbuffer);
2981                                 }
2982                                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%s\n", surface->texture && surface->texture->name[0] ? surface->texture->name : "default.bmp");
2983                                 if (l > 0)
2984                                         outbufferpos += l;
2985                                 for (cornerindex = 0;cornerindex < 3;cornerindex++)
2986                                 {
2987                                         const int index = e[2-cornerindex];
2988                                         const float *v = model->surfmesh.data_vertex3f + index * 3;
2989                                         const float *vn = model->surfmesh.data_normal3f + index * 3;
2990                                         const float *vt = model->surfmesh.data_texcoordtexture2f + index * 2;
2991                                         const int b = model->surfmesh.blends[index];
2992                                         if (b < model->num_bones)
2993                                                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i %f %f %f %f %f %f %f %f\n"                          , b, v[0], v[1], v[2], vn[0], vn[1], vn[2], vt[0], 1 - vt[1]);
2994                                         else
2995                                         {
2996                                                 const blendweights_t *w = model->surfmesh.data_blendweights + b - model->num_bones;
2997                                                 const unsigned char *wi = w->index;
2998                                                 const unsigned char *wf = w->influence;
2999                                             if (wf[3]) l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i %f %f %f %f %f %f %f %f 4 %i %f %i %f %i %f %i %f\n", wi[0], v[0], v[1], v[2], vn[0], vn[1], vn[2], vt[0], 1 - vt[1], wi[0], wf[0]/255.0f, wi[1], wf[1]/255.0f, wi[2], wf[2]/255.0f, wi[3], wf[3]/255.0f);
3000                                                 else if (wf[2]) l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i %f %f %f %f %f %f %f %f 3 %i %f %i %f %i %f\n"      , wi[0], v[0], v[1], v[2], vn[0], vn[1], vn[2], vt[0], 1 - vt[1], wi[0], wf[0]/255.0f, wi[1], wf[1]/255.0f, wi[2], wf[2]/255.0f);
3001                                                 else if (wf[1]) l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i %f %f %f %f %f %f %f %f 2 %i %f %i %f\n"            , wi[0], v[0], v[1], v[2], vn[0], vn[1], vn[2], vt[0], 1 - vt[1], wi[0], wf[0]/255.0f, wi[1], wf[1]/255.0f);
3002                                                 else            l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i %f %f %f %f %f %f %f %f\n"                          , wi[0], v[0], v[1], v[2], vn[0], vn[1], vn[2], vt[0], 1 - vt[1]);
3003                                         }
3004                                         if (l > 0)
3005                                                 outbufferpos += l;
3006                                 }
3007                         }
3008                 }
3009                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
3010                 if (l > 0)
3011                         outbufferpos += l;
3012         }
3013
3014         FS_WriteFile(filename, outbuffer, outbufferpos);
3015         Z_Free(outbuffer);
3016
3017         Con_Printf("Wrote %s (%i bytes, %i nodes, %i frames, %i triangles)\n", filename, (int)outbufferpos, countnodes, countframes, counttriangles);
3018 }
3019
3020 /*
3021 ================
3022 Mod_Decompile_f
3023
3024 decompiles a model to editable files
3025 ================
3026 */
3027 static void Mod_Decompile_f(void)
3028 {
3029         int i, j, k, l, first, count;
3030         dp_model_t *mod;
3031         char inname[MAX_QPATH];
3032         char outname[MAX_QPATH];
3033         char mtlname[MAX_QPATH];
3034         char basename[MAX_QPATH];
3035         char animname[MAX_QPATH];
3036         char animname2[MAX_QPATH];
3037         char zymtextbuffer[16384];
3038         char dpmtextbuffer[16384];
3039         char framegroupstextbuffer[16384];
3040         int zymtextsize = 0;
3041         int dpmtextsize = 0;
3042         int framegroupstextsize = 0;
3043
3044         if (Cmd_Argc() != 2)
3045         {
3046                 Con_Print("usage: modeldecompile <filename>\n");
3047                 return;
3048         }
3049
3050         strlcpy(inname, Cmd_Argv(1), sizeof(inname));
3051         FS_StripExtension(inname, basename, sizeof(basename));
3052
3053         mod = Mod_ForName(inname, false, true, inname[0] == '*' ? cl.model_name[1] : NULL);
3054         if (mod->brush.submodel)
3055         {
3056                 // if we're decompiling a submodel, be sure to give it a proper name based on its parent
3057                 FS_StripExtension(cl.model_name[1], outname, sizeof(outname));
3058                 dpsnprintf(basename, sizeof(basename), "%s/%s", outname, mod->name);
3059                 outname[0] = 0;
3060         }
3061         if (!mod)
3062         {
3063                 Con_Print("No such model\n");
3064                 return;
3065         }
3066         if (!mod->surfmesh.num_triangles)
3067         {
3068                 Con_Print("Empty model (or sprite)\n");
3069                 return;
3070         }
3071
3072         // export OBJ if possible (not on sprites)
3073         if (mod->surfmesh.num_triangles)
3074         {
3075                 dpsnprintf(outname, sizeof(outname), "%s_decompiled.obj", basename);
3076                 dpsnprintf(mtlname, sizeof(mtlname), "%s_decompiled.mtl", basename);
3077                 Mod_Decompile_OBJ(mod, outname, mtlname, inname);
3078         }
3079
3080         // export SMD if possible (only for skeletal models)
3081         if (mod->surfmesh.num_triangles && mod->num_bones)
3082         {
3083                 dpsnprintf(outname, sizeof(outname), "%s_decompiled/ref1.smd", basename);
3084                 Mod_Decompile_SMD(mod, outname, 0, 1, true);
3085                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "output out.zym\nscale 1\norigin 0 0 0\nmesh ref1.smd\n");
3086                 if (l > 0) zymtextsize += l;
3087                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "outputdir .\nmodel out\nscale 1\norigin 0 0 0\nscene ref1.smd\n");
3088                 if (l > 0) dpmtextsize += l;
3089                 for (i = 0;i < mod->numframes;i = j)
3090                 {
3091                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
3092                         first = mod->animscenes[i].firstframe;
3093                         if (mod->animscenes[i].framecount > 1)
3094                         {
3095                                 // framegroup anim
3096                                 count = mod->animscenes[i].framecount;
3097                                 j = i + 1;
3098                         }
3099                         else
3100                         {
3101                                 // individual frame
3102                                 // check for additional frames with same name
3103                                 for (l = 0, k = strlen(animname);animname[l];l++)
3104                                         if(animname[l] < '0' || animname[l] > '9')
3105                                                 k = l + 1;
3106                                 if(k > 0 && animname[k-1] == '_')
3107                                         --k;
3108                                 animname[k] = 0;
3109                                 count = mod->num_poses - first;
3110                                 for (j = i + 1;j < mod->numframes;j++)
3111                                 {
3112                                         strlcpy(animname2, mod->animscenes[j].name, sizeof(animname2));
3113                                         for (l = 0, k = strlen(animname2);animname2[l];l++)
3114                                                 if(animname2[l] < '0' || animname2[l] > '9')
3115                                                         k = l + 1;
3116                                         if(k > 0 && animname[k-1] == '_')
3117                                                 --k;
3118                                         animname2[k] = 0;
3119                                         if (strcmp(animname2, animname) || mod->animscenes[j].framecount > 1)
3120                                         {
3121                                                 count = mod->animscenes[j].firstframe - first;
3122                                                 break;
3123                                         }
3124                                 }
3125                                 // if it's only one frame, use the original frame name
3126                                 if (j == i + 1)
3127                                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
3128
3129                         }
3130                         dpsnprintf(outname, sizeof(outname), "%s_decompiled/%s.smd", basename, animname);
3131                         Mod_Decompile_SMD(mod, outname, first, count, false);
3132                         if (zymtextsize < (int)sizeof(zymtextbuffer) - 100)
3133                         {
3134                                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "scene %s.smd fps %g %s\n", animname, mod->animscenes[i].framerate, mod->animscenes[i].loop ? "" : " noloop");
3135                                 if (l > 0) zymtextsize += l;
3136                         }
3137                         if (dpmtextsize < (int)sizeof(dpmtextbuffer) - 100)
3138                         {
3139                                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "scene %s.smd fps %g %s\n", animname, mod->animscenes[i].framerate, mod->animscenes[i].loop ? "" : " noloop");
3140                                 if (l > 0) dpmtextsize += l;
3141                         }
3142                         if (framegroupstextsize < (int)sizeof(framegroupstextbuffer) - 100)
3143                         {
3144                                 l = dpsnprintf(framegroupstextbuffer + framegroupstextsize, sizeof(framegroupstextbuffer) - framegroupstextsize, "%d %d %f %d // %s\n", first, count, mod->animscenes[i].framerate, mod->animscenes[i].loop, animname);
3145                                 if (l > 0) framegroupstextsize += l;
3146                         }
3147                 }
3148                 if (zymtextsize)
3149                         FS_WriteFile(va("%s_decompiled/out_zym.txt", basename), zymtextbuffer, (fs_offset_t)zymtextsize);
3150                 if (dpmtextsize)
3151                         FS_WriteFile(va("%s_decompiled/out_dpm.txt", basename), dpmtextbuffer, (fs_offset_t)dpmtextsize);
3152                 if (framegroupstextsize)
3153                         FS_WriteFile(va("%s_decompiled.framegroups", basename), framegroupstextbuffer, (fs_offset_t)framegroupstextsize);
3154         }
3155 }
3156
3157 void Mod_AllocLightmap_Init(mod_alloclightmap_state_t *state, int width, int height)
3158 {
3159         int y;
3160         memset(state, 0, sizeof(*state));
3161         state->width = width;
3162         state->height = height;
3163         state->currentY = 0;
3164         state->rows = Mem_Alloc(loadmodel->mempool, state->height * sizeof(*state->rows));
3165         for (y = 0;y < state->height;y++)
3166         {
3167                 state->rows[y].currentX = 0;
3168                 state->rows[y].rowY = -1;
3169         }
3170 }
3171
3172 void Mod_AllocLightmap_Reset(mod_alloclightmap_state_t *state)
3173 {
3174         int y;
3175         state->currentY = 0;
3176         for (y = 0;y < state->height;y++)
3177         {
3178                 state->rows[y].currentX = 0;
3179                 state->rows[y].rowY = -1;
3180         }
3181 }
3182
3183 void Mod_AllocLightmap_Free(mod_alloclightmap_state_t *state)
3184 {
3185         if (state->rows)
3186                 Mem_Free(state->rows);
3187         memset(state, 0, sizeof(*state));
3188 }
3189
3190 qboolean Mod_AllocLightmap_Block(mod_alloclightmap_state_t *state, int blockwidth, int blockheight, int *outx, int *outy)
3191 {
3192         mod_alloclightmap_row_t *row;
3193         int y;
3194
3195         row = state->rows + blockheight;
3196         if ((row->rowY < 0) || (row->currentX + blockwidth > state->width))
3197         {
3198                 if (state->currentY + blockheight <= state->height)
3199                 {
3200                         // use the current allocation position
3201                         row->rowY = state->currentY;
3202                         row->currentX = 0;
3203                         state->currentY += blockheight;
3204                 }
3205                 else
3206                 {
3207                         // find another position
3208                         for (y = blockheight;y < state->height;y++)
3209                         {
3210                                 if ((state->rows[y].rowY >= 0) && (state->rows[y].currentX + blockwidth <= state->width))
3211                                 {
3212                                         row = state->rows + y;
3213                                         break;
3214                                 }
3215                         }
3216                         if (y == state->height)
3217                                 return false;
3218                 }
3219         }
3220         *outy = row->rowY;
3221         *outx = row->currentX;
3222         row->currentX += blockwidth;
3223
3224         return true;
3225 }
3226
3227 typedef struct lightmapsample_s
3228 {
3229         float pos[3];
3230         float sh1[4][3];
3231         float *vertex_color;
3232         unsigned char *lm_bgr;
3233         unsigned char *lm_dir;
3234 }
3235 lightmapsample_t;
3236
3237 typedef struct lightmapvertex_s
3238 {
3239         int index;
3240         float pos[3];
3241         float normal[3];
3242         float texcoordbase[2];
3243         float texcoordlightmap[2];
3244         float lightcolor[4];
3245 }
3246 lightmapvertex_t;
3247
3248 typedef struct lightmaptriangle_s
3249 {
3250         int triangleindex;
3251         int surfaceindex;
3252         int lightmapindex;
3253         int axis;
3254         int lmoffset[2];
3255         int lmsize[2];
3256         // 2D modelspace coordinates of min corner
3257         // snapped to lightmap grid but not in grid coordinates
3258         float lmbase[2];
3259         // 2D modelspace to lightmap coordinate scale
3260         float lmscale[2];
3261         float vertex[3][3];
3262         float mins[3];
3263         float maxs[3];
3264 }
3265 lightmaptriangle_t;
3266
3267 typedef struct lightmaplight_s
3268 {
3269         float origin[3];
3270         float radius;
3271         float iradius;
3272         float radius2;
3273         float color[3];
3274         svbsp_t svbsp;
3275 }
3276 lightmaplight_t;
3277
3278 lightmaptriangle_t *mod_generatelightmaps_lightmaptriangles;
3279
3280 #define MAX_LIGHTMAPSAMPLES 64
3281 static int mod_generatelightmaps_numoffsets[3];
3282 static float mod_generatelightmaps_offsets[3][MAX_LIGHTMAPSAMPLES][3];
3283
3284 static int mod_generatelightmaps_numlights;
3285 static lightmaplight_t *mod_generatelightmaps_lightinfo;
3286
3287 extern int R_Shadow_GetRTLightInfo(unsigned int lightindex, float *origin, float *radius, float *color);
3288 extern cvar_t r_shadow_lightattenuationdividebias;
3289 extern cvar_t r_shadow_lightattenuationlinearscale;
3290
3291 static void Mod_GenerateLightmaps_LightPoint(dp_model_t *model, const vec3_t pos, vec3_t ambient, vec3_t diffuse, vec3_t lightdir)
3292 {
3293         int i;
3294         int index;
3295         int result;
3296         float relativepoint[3];
3297         float color[3];
3298         float dir[3];
3299         float dist;
3300         float dist2;
3301         float intensity;
3302         float sample[5*3];
3303         float lightorigin[3];
3304         float lightradius;
3305         float lightradius2;
3306         float lightiradius;
3307         float lightcolor[3];
3308         trace_t trace;
3309         for (i = 0;i < 5*3;i++)
3310                 sample[i] = 0.0f;
3311         for (index = 0;;index++)
3312         {
3313                 result = R_Shadow_GetRTLightInfo(index, lightorigin, &lightradius, lightcolor);
3314                 if (result < 0)
3315                         break;
3316                 if (result == 0)
3317                         continue;
3318                 lightradius2 = lightradius * lightradius;
3319                 VectorSubtract(lightorigin, pos, relativepoint);
3320                 dist2 = VectorLength2(relativepoint);
3321                 if (dist2 >= lightradius2)
3322                         continue;
3323                 lightiradius = 1.0f / lightradius;
3324                 dist = sqrt(dist2) * lightiradius;
3325                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
3326                 if (intensity <= 0)
3327                         continue;
3328                 if (model && model->TraceLine)
3329                 {
3330                         model->TraceLine(model, NULL, NULL, &trace, pos, lightorigin, SUPERCONTENTS_VISBLOCKERMASK);
3331                         if (trace.fraction < 1)
3332                                 continue;
3333                 }
3334                 // scale down intensity to add to both ambient and diffuse
3335                 //intensity *= 0.5f;
3336                 VectorNormalize(relativepoint);
3337                 VectorScale(lightcolor, intensity, color);
3338                 VectorMA(sample    , 0.5f            , color, sample    );
3339                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
3340                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
3341                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
3342                 // calculate a weighted average light direction as well
3343                 intensity *= VectorLength(color);
3344                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
3345         }
3346         // calculate the direction we'll use to reduce the sample to a directional light source
3347         VectorCopy(sample + 12, dir);
3348         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3349         VectorNormalize(dir);
3350         // extract the diffuse color along the chosen direction and scale it
3351         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]);
3352         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]);
3353         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]);
3354         // subtract some of diffuse from ambient
3355         VectorMA(sample, -0.333f, diffuse, ambient);
3356         // store the normalized lightdir
3357         VectorCopy(dir, lightdir);
3358 }
3359
3360 static void Mod_GenerateLightmaps_CreateLights_ComputeSVBSP_InsertSurfaces(const dp_model_t *model, svbsp_t *svbsp, const float *mins, const float *maxs)
3361 {
3362         int surfaceindex;
3363         int triangleindex;
3364         const msurface_t *surface;
3365         const float *vertex3f = model->surfmesh.data_vertex3f;
3366         const int *element3i = model->surfmesh.data_element3i;
3367         const int *e;
3368         float v2[3][3];
3369         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->nummodelsurfaces;surfaceindex++, surface++)
3370         {
3371                 if (!BoxesOverlap(surface->mins, surface->maxs, mins, maxs))
3372                         continue;
3373                 if (surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW)
3374                         continue;
3375                 for (triangleindex = 0, e = element3i + 3*surface->num_firsttriangle;triangleindex < surface->num_triangles;triangleindex++, e += 3)
3376                 {
3377                         VectorCopy(vertex3f + 3*e[0], v2[0]);
3378                         VectorCopy(vertex3f + 3*e[1], v2[1]);
3379                         VectorCopy(vertex3f + 3*e[2], v2[2]);
3380                         SVBSP_AddPolygon(svbsp, 3, v2[0], true, NULL, NULL, 0);
3381                 }
3382         }
3383 }
3384
3385 static void Mod_GenerateLightmaps_CreateLights_ComputeSVBSP(dp_model_t *model, lightmaplight_t *lightinfo)
3386 {
3387         int maxnodes = 1<<14;
3388         svbsp_node_t *nodes;
3389         float origin[3];
3390         float mins[3];
3391         float maxs[3];
3392         svbsp_t svbsp;
3393         VectorSet(mins, lightinfo->origin[0] - lightinfo->radius, lightinfo->origin[1] - lightinfo->radius, lightinfo->origin[2] - lightinfo->radius);
3394         VectorSet(maxs, lightinfo->origin[0] + lightinfo->radius, lightinfo->origin[1] + lightinfo->radius, lightinfo->origin[2] + lightinfo->radius);
3395         VectorCopy(lightinfo->origin, origin);
3396         nodes = Mem_Alloc(tempmempool, maxnodes * sizeof(*nodes));
3397         for (;;)
3398         {
3399                 SVBSP_Init(&svbsp, origin, maxnodes, nodes);
3400                 Mod_GenerateLightmaps_CreateLights_ComputeSVBSP_InsertSurfaces(model, &svbsp, mins, maxs);
3401                 if (svbsp.ranoutofnodes)
3402                 {
3403                         maxnodes *= 2;
3404                         if (maxnodes >= 1<<22)
3405                         {
3406                                 Mem_Free(nodes);
3407                                 return;
3408                         }
3409                         Mem_Free(nodes);
3410                         nodes = Mem_Alloc(tempmempool, maxnodes * sizeof(*nodes));
3411                 }
3412                 else
3413                         break;
3414         }
3415         if (svbsp.numnodes > 0)
3416         {
3417                 svbsp.nodes = Mem_Alloc(tempmempool, svbsp.numnodes * sizeof(*nodes));
3418                 memcpy(svbsp.nodes, nodes, svbsp.numnodes * sizeof(*nodes));
3419                 lightinfo->svbsp = svbsp;
3420         }
3421         Mem_Free(nodes);
3422 }
3423
3424 static void Mod_GenerateLightmaps_CreateLights(dp_model_t *model)
3425 {
3426         int index;
3427         int result;
3428         lightmaplight_t *lightinfo;
3429         float origin[3];
3430         float radius;
3431         float color[3];
3432         mod_generatelightmaps_numlights = 0;
3433         for (index = 0;;index++)
3434         {
3435                 result = R_Shadow_GetRTLightInfo(index, origin, &radius, color);
3436                 if (result < 0)
3437                         break;
3438                 if (result > 0)
3439                         mod_generatelightmaps_numlights++;
3440         }
3441         if (mod_generatelightmaps_numlights > 0)
3442         {
3443                 mod_generatelightmaps_lightinfo = Mem_Alloc(tempmempool, mod_generatelightmaps_numlights * sizeof(*mod_generatelightmaps_lightinfo));
3444                 lightinfo = mod_generatelightmaps_lightinfo;
3445                 for (index = 0;;index++)
3446                 {
3447                         result = R_Shadow_GetRTLightInfo(index, lightinfo->origin, &lightinfo->radius, lightinfo->color);
3448                         if (result < 0)
3449                                 break;
3450                         if (result > 0)
3451                                 lightinfo++;
3452                 }
3453         }
3454         for (index = 0, lightinfo = mod_generatelightmaps_lightinfo;index < mod_generatelightmaps_numlights;index++, lightinfo++)
3455         {
3456                 lightinfo->iradius = 1.0f / lightinfo->radius;
3457                 lightinfo->radius2 = lightinfo->radius * lightinfo->radius;
3458                 // TODO: compute svbsp
3459                 Mod_GenerateLightmaps_CreateLights_ComputeSVBSP(model, lightinfo);
3460         }
3461 }
3462
3463 static void Mod_GenerateLightmaps_DestroyLights(dp_model_t *model)
3464 {
3465         int i;
3466         if (mod_generatelightmaps_lightinfo)
3467         {
3468                 for (i = 0;i < mod_generatelightmaps_numlights;i++)
3469                         if (mod_generatelightmaps_lightinfo[i].svbsp.nodes)
3470                                 Mem_Free(mod_generatelightmaps_lightinfo[i].svbsp.nodes);
3471                 Mem_Free(mod_generatelightmaps_lightinfo);
3472         }
3473         mod_generatelightmaps_lightinfo = NULL;
3474         mod_generatelightmaps_numlights = 0;
3475 }
3476
3477 static qboolean Mod_GenerateLightmaps_SamplePoint_SVBSP(const svbsp_t *svbsp, const float *pos)
3478 {
3479         const svbsp_node_t *node;
3480         const svbsp_node_t *nodes = svbsp->nodes;
3481         int num = 0;
3482         while (num >= 0)
3483         {
3484                 node = nodes + num;
3485                 num = node->children[DotProduct(node->plane, pos) < node->plane[3]];
3486         }
3487         return num == -1; // true if empty, false if solid (shadowed)
3488 }
3489
3490 static void Mod_GenerateLightmaps_SamplePoint(const float *pos, const float *normal, float *sample, int numoffsets, const float *offsets)
3491 {
3492         int i;
3493         float relativepoint[3];
3494         float color[3];
3495         float offsetpos[3];
3496         float dist;
3497         float dist2;
3498         float intensity;
3499         int offsetindex;
3500         int hits;
3501         int tests;
3502         const lightmaplight_t *lightinfo;
3503         trace_t trace;
3504         for (i = 0;i < 5*3;i++)
3505                 sample[i] = 0.0f;
3506         for (i = 0, lightinfo = mod_generatelightmaps_lightinfo;i < mod_generatelightmaps_numlights;i++, lightinfo++)
3507         {
3508                 //R_SampleRTLights(pos, sample, numoffsets, offsets);
3509                 VectorSubtract(lightinfo->origin, pos, relativepoint);
3510                 // don't accept light from behind a surface, it causes bad shading
3511                 if (normal && DotProduct(relativepoint, normal) <= 0)
3512                         continue;
3513                 dist2 = VectorLength2(relativepoint);
3514                 if (dist2 >= lightinfo->radius2)
3515                         continue;
3516                 dist = sqrt(dist2) * lightinfo->iradius;
3517                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
3518                 if (intensity <= 0)
3519                         continue;
3520                 if (cl.worldmodel && cl.worldmodel->TraceLine && numoffsets > 0)
3521                 {
3522                         hits = 0;
3523                         tests = 1;
3524                         if (Mod_GenerateLightmaps_SamplePoint_SVBSP(&lightinfo->svbsp, pos))
3525                                 hits++;
3526                         for (offsetindex = 1;offsetindex < numoffsets;offsetindex++)
3527                         {
3528                                 VectorAdd(pos, offsets + 3*offsetindex, offsetpos);
3529                                 if (!normal)
3530                                 {
3531                                         // for light grid we'd better check visibility of the offset point
3532                                         cl.worldmodel->TraceLine(cl.worldmodel, NULL, NULL, &trace, pos, offsetpos, SUPERCONTENTS_VISBLOCKERMASK);
3533                                         if (trace.fraction < 1)
3534                                                 VectorLerp(pos, trace.fraction, offsetpos, offsetpos);
3535                                 }
3536                                 tests++;
3537                                 if (Mod_GenerateLightmaps_SamplePoint_SVBSP(&lightinfo->svbsp, offsetpos))
3538                                         hits++;
3539                         }
3540                         if (!hits)
3541                                 continue;
3542                         // scale intensity according to how many rays succeeded
3543                         // we know one test is valid, half of the rest will fail...
3544                         //if (normal && tests > 1)
3545                         //      intensity *= (tests - 1.0f) / tests;
3546                         intensity *= (float)hits / tests;
3547                 }
3548                 // scale down intensity to add to both ambient and diffuse
3549                 //intensity *= 0.5f;
3550                 VectorNormalize(relativepoint);
3551                 VectorScale(lightinfo->color, intensity, color);
3552                 VectorMA(sample    , 0.5f            , color, sample    );
3553                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
3554                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
3555                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
3556                 // calculate a weighted average light direction as well
3557                 intensity *= VectorLength(color);
3558                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
3559         }
3560 }
3561
3562 static void Mod_GenerateLightmaps_LightmapSample(const float *pos, const float *normal, unsigned char *lm_bgr, unsigned char *lm_dir)
3563 {
3564         float sample[5*3];
3565         float color[3];
3566         float dir[3];
3567         float f;
3568         Mod_GenerateLightmaps_SamplePoint(pos, normal, sample, mod_generatelightmaps_numoffsets[0], mod_generatelightmaps_offsets[0][0]);
3569         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3570         VectorCopy(sample + 12, dir);
3571         VectorNormalize(dir);
3572         //VectorAdd(dir, normal, dir);
3573         //VectorNormalize(dir);
3574         f = DotProduct(dir, normal);
3575         f = max(0, f) * 255.0f;
3576         VectorScale(sample, f, color);
3577         //VectorCopy(normal, dir);
3578         VectorSet(dir, (dir[0]+1.0f)*127.5f, (dir[1]+1.0f)*127.5f, (dir[2]+1.0f)*127.5f);
3579         lm_bgr[0] = (unsigned char)bound(0.0f, color[2], 255.0f);
3580         lm_bgr[1] = (unsigned char)bound(0.0f, color[1], 255.0f);
3581         lm_bgr[2] = (unsigned char)bound(0.0f, color[0], 255.0f);
3582         lm_bgr[3] = 255;
3583         lm_dir[0] = (unsigned char)dir[2];
3584         lm_dir[1] = (unsigned char)dir[1];
3585         lm_dir[2] = (unsigned char)dir[0];
3586         lm_dir[3] = 255;
3587 }
3588
3589 static void Mod_GenerateLightmaps_VertexSample(const float *pos, const float *normal, float *vertex_color)
3590 {
3591         float sample[5*3];
3592         Mod_GenerateLightmaps_SamplePoint(pos, normal, sample, mod_generatelightmaps_numoffsets[1], mod_generatelightmaps_offsets[1][0]);
3593         VectorCopy(sample, vertex_color);
3594 }
3595
3596 static void Mod_GenerateLightmaps_GridSample(const float *pos, q3dlightgrid_t *s)
3597 {
3598         float sample[5*3];
3599         float ambient[3];
3600         float diffuse[3];
3601         float dir[3];
3602         Mod_GenerateLightmaps_SamplePoint(pos, NULL, sample, mod_generatelightmaps_numoffsets[2], mod_generatelightmaps_offsets[2][0]);
3603         // calculate the direction we'll use to reduce the sample to a directional light source
3604         VectorCopy(sample + 12, dir);
3605         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3606         VectorNormalize(dir);
3607         // extract the diffuse color along the chosen direction and scale it
3608         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]) * 127.5f;
3609         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]) * 127.5f;
3610         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]) * 127.5f;
3611         // scale the ambient from 0-2 to 0-255 and subtract some of diffuse
3612         VectorScale(sample, 127.5f, ambient);
3613         VectorMA(ambient, -0.333f, diffuse, ambient);
3614         // encode to the grid format
3615         s->ambientrgb[0] = (unsigned char)bound(0.0f, ambient[0], 255.0f);
3616         s->ambientrgb[1] = (unsigned char)bound(0.0f, ambient[1], 255.0f);
3617         s->ambientrgb[2] = (unsigned char)bound(0.0f, ambient[2], 255.0f);
3618         s->diffusergb[0] = (unsigned char)bound(0.0f, diffuse[0], 255.0f);
3619         s->diffusergb[1] = (unsigned char)bound(0.0f, diffuse[1], 255.0f);
3620         s->diffusergb[2] = (unsigned char)bound(0.0f, diffuse[2], 255.0f);
3621         if (dir[2] >= 0.99f) {s->diffusepitch = 0;s->diffuseyaw = 0;}
3622         else if (dir[2] <= -0.99f) {s->diffusepitch = 128;s->diffuseyaw = 0;}
3623         else {s->diffusepitch = (unsigned char)(acos(dir[2]) * (127.5f/M_PI));s->diffuseyaw = (unsigned char)(atan2(dir[1], dir[0]) * (127.5f/M_PI));}
3624 }
3625
3626 static void Mod_GenerateLightmaps_InitSampleOffsets(dp_model_t *model)
3627 {
3628         float radius[3];
3629         float temp[3];
3630         int i, j;
3631         memset(mod_generatelightmaps_offsets, 0, sizeof(mod_generatelightmaps_offsets));
3632         mod_generatelightmaps_numoffsets[0] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_lightmapsamples.integer);
3633         mod_generatelightmaps_numoffsets[1] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_vertexsamples.integer);
3634         mod_generatelightmaps_numoffsets[2] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_gridsamples.integer);
3635         radius[0] = mod_generatelightmaps_lightmapradius.value;
3636         radius[1] = mod_generatelightmaps_vertexradius.value;
3637         radius[2] = mod_generatelightmaps_gridradius.value;
3638         for (i = 0;i < 3;i++)
3639         {
3640                 for (j = 1;j < mod_generatelightmaps_numoffsets[i];j++)
3641                 {
3642                         VectorRandom(temp);
3643                         VectorScale(temp, radius[i], mod_generatelightmaps_offsets[i][j]);
3644                 }
3645         }
3646 }
3647
3648 static void Mod_GenerateLightmaps_DestroyLightmaps(dp_model_t *model)
3649 {
3650         msurface_t *surface;
3651         int surfaceindex;
3652         int i;
3653         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3654         {
3655                 surface = model->data_surfaces + surfaceindex;
3656                 surface->lightmaptexture = NULL;
3657                 surface->deluxemaptexture = NULL;
3658         }
3659         if (model->brushq3.data_lightmaps)
3660         {
3661                 for (i = 0;i < model->brushq3.num_mergedlightmaps;i++)
3662                         if (model->brushq3.data_lightmaps[i])
3663                                 R_FreeTexture(model->brushq3.data_lightmaps[i]);
3664                 Mem_Free(model->brushq3.data_lightmaps);
3665                 model->brushq3.data_lightmaps = NULL;
3666         }
3667         if (model->brushq3.data_deluxemaps)
3668         {
3669                 for (i = 0;i < model->brushq3.num_mergedlightmaps;i++)
3670                         if (model->brushq3.data_deluxemaps[i])
3671                                 R_FreeTexture(model->brushq3.data_deluxemaps[i]);
3672                 Mem_Free(model->brushq3.data_deluxemaps);
3673                 model->brushq3.data_deluxemaps = NULL;
3674         }
3675 }
3676
3677 static void Mod_GenerateLightmaps_UnweldTriangles(dp_model_t *model)
3678 {
3679         msurface_t *surface;
3680         int surfaceindex;
3681         int vertexindex;
3682         int outvertexindex;
3683         int i;
3684         const int *e;
3685         surfmesh_t oldsurfmesh;
3686         size_t size;
3687         unsigned char *data;
3688         oldsurfmesh = model->surfmesh;
3689         model->surfmesh.num_triangles = oldsurfmesh.num_triangles;
3690         model->surfmesh.num_vertices = oldsurfmesh.num_triangles * 3;
3691         size = 0;
3692         size += model->surfmesh.num_vertices * sizeof(float[3]);
3693         size += model->surfmesh.num_vertices * sizeof(float[3]);
3694         size += model->surfmesh.num_vertices * sizeof(float[3]);
3695         size += model->surfmesh.num_vertices * sizeof(float[3]);
3696         size += model->surfmesh.num_vertices * sizeof(float[2]);
3697         size += model->surfmesh.num_vertices * sizeof(float[2]);
3698         size += model->surfmesh.num_vertices * sizeof(float[4]);
3699         data = (unsigned char *)Mem_Alloc(model->mempool, size);
3700         model->surfmesh.data_vertex3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3701         model->surfmesh.data_normal3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3702         model->surfmesh.data_svector3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3703         model->surfmesh.data_tvector3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3704         model->surfmesh.data_texcoordtexture2f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[2]);
3705         model->surfmesh.data_texcoordlightmap2f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[2]);
3706         model->surfmesh.data_lightmapcolor4f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[4]);
3707         if (model->surfmesh.num_vertices > 65536)
3708                 model->surfmesh.data_element3s = NULL;
3709
3710         if (model->surfmesh.vertexposition)
3711                 Mem_Free(model->surfmesh.vertexposition);
3712         model->surfmesh.vertexposition = NULL;
3713         if (model->surfmesh.vertexmesh)
3714                 Mem_Free(model->surfmesh.vertexmesh);
3715         model->surfmesh.vertexmesh = NULL;
3716         if (model->surfmesh.vertexpositionbuffer)
3717                 R_Mesh_DestroyMeshBuffer(model->surfmesh.vertexpositionbuffer);
3718         model->surfmesh.vertexpositionbuffer = NULL;
3719         if (model->surfmesh.vertexmeshbuffer)
3720                 R_Mesh_DestroyMeshBuffer(model->surfmesh.vertexmeshbuffer);
3721         model->surfmesh.vertexmeshbuffer = NULL;
3722         if (model->surfmesh.data_element3i_indexbuffer)
3723                 R_Mesh_DestroyMeshBuffer(model->surfmesh.data_element3i_indexbuffer);
3724         model->surfmesh.data_element3i_indexbuffer = NULL;
3725         if (model->surfmesh.data_element3s_indexbuffer)
3726                 R_Mesh_DestroyMeshBuffer(model->surfmesh.data_element3s_indexbuffer);
3727         model->surfmesh.data_element3s_indexbuffer = NULL;
3728         if (model->surfmesh.vbo_vertexbuffer)
3729                 R_Mesh_DestroyMeshBuffer(model->surfmesh.vbo_vertexbuffer);
3730         model->surfmesh.vbo_vertexbuffer = 0;
3731
3732         // convert all triangles to unique vertex data
3733         outvertexindex = 0;
3734         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3735         {
3736                 surface = model->data_surfaces + surfaceindex;
3737                 surface->num_firstvertex = outvertexindex;
3738                 surface->num_vertices = surface->num_triangles*3;
3739                 e = oldsurfmesh.data_element3i + surface->num_firsttriangle*3;
3740                 for (i = 0;i < surface->num_triangles*3;i++)
3741                 {
3742                         vertexindex = e[i];
3743                         model->surfmesh.data_vertex3f[outvertexindex*3+0] = oldsurfmesh.data_vertex3f[vertexindex*3+0];
3744                         model->surfmesh.data_vertex3f[outvertexindex*3+1] = oldsurfmesh.data_vertex3f[vertexindex*3+1];
3745                         model->surfmesh.data_vertex3f[outvertexindex*3+2] = oldsurfmesh.data_vertex3f[vertexindex*3+2];
3746                         model->surfmesh.data_normal3f[outvertexindex*3+0] = oldsurfmesh.data_normal3f[vertexindex*3+0];
3747                         model->surfmesh.data_normal3f[outvertexindex*3+1] = oldsurfmesh.data_normal3f[vertexindex*3+1];
3748                         model->surfmesh.data_normal3f[outvertexindex*3+2] = oldsurfmesh.data_normal3f[vertexindex*3+2];
3749                         model->surfmesh.data_svector3f[outvertexindex*3+0] = oldsurfmesh.data_svector3f[vertexindex*3+0];
3750                         model->surfmesh.data_svector3f[outvertexindex*3+1] = oldsurfmesh.data_svector3f[vertexindex*3+1];
3751                         model->surfmesh.data_svector3f[outvertexindex*3+2] = oldsurfmesh.data_svector3f[vertexindex*3+2];
3752                         model->surfmesh.data_tvector3f[outvertexindex*3+0] = oldsurfmesh.data_tvector3f[vertexindex*3+0];
3753                         model->surfmesh.data_tvector3f[outvertexindex*3+1] = oldsurfmesh.data_tvector3f[vertexindex*3+1];
3754                         model->surfmesh.data_tvector3f[outvertexindex*3+2] = oldsurfmesh.data_tvector3f[vertexindex*3+2];
3755                         model->surfmesh.data_texcoordtexture2f[outvertexindex*2+0] = oldsurfmesh.data_texcoordtexture2f[vertexindex*2+0];
3756                         model->surfmesh.data_texcoordtexture2f[outvertexindex*2+1] = oldsurfmesh.data_texcoordtexture2f[vertexindex*2+1];
3757                         if (oldsurfmesh.data_texcoordlightmap2f)
3758                         {
3759                                 model->surfmesh.data_texcoordlightmap2f[outvertexindex*2+0] = oldsurfmesh.data_texcoordlightmap2f[vertexindex*2+0];
3760                                 model->surfmesh.data_texcoordlightmap2f[outvertexindex*2+1] = oldsurfmesh.data_texcoordlightmap2f[vertexindex*2+1];
3761                         }
3762                         if (oldsurfmesh.data_lightmapcolor4f)
3763                         {
3764                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+0] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+0];
3765                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+1] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+1];
3766                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+2] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+2];
3767                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+3] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+3];
3768                         }
3769                         else
3770                                 Vector4Set(model->surfmesh.data_lightmapcolor4f + 4*outvertexindex, 1, 1, 1, 1);
3771                         model->surfmesh.data_element3i[surface->num_firsttriangle*3+i] = outvertexindex;
3772                         outvertexindex++;
3773                 }
3774         }
3775         if (model->surfmesh.data_element3s)
3776                 for (i = 0;i < model->surfmesh.num_triangles*3;i++)
3777                         model->surfmesh.data_element3s[i] = model->surfmesh.data_element3i[i];
3778
3779         // find and update all submodels to use this new surfmesh data
3780         for (i = 0;i < model->brush.numsubmodels;i++)
3781                 model->brush.submodels[i]->surfmesh = model->surfmesh;
3782 }
3783
3784 static void Mod_GenerateLightmaps_CreateTriangleInformation(dp_model_t *model)
3785 {
3786         msurface_t *surface;
3787         int surfaceindex;
3788         int i;
3789         int axis;
3790         float normal[3];
3791         const int *e;
3792         lightmaptriangle_t *triangle;
3793         // generate lightmap triangle structs
3794         mod_generatelightmaps_lightmaptriangles = Mem_Alloc(model->mempool, model->surfmesh.num_triangles * sizeof(lightmaptriangle_t));
3795         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3796         {
3797                 surface = model->data_surfaces + surfaceindex;
3798                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3799                 for (i = 0;i < surface->num_triangles;i++)
3800                 {
3801                         triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3802                         triangle->triangleindex = surface->num_firsttriangle+i;
3803                         triangle->surfaceindex = surfaceindex;
3804                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+0], triangle->vertex[0]);
3805                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+1], triangle->vertex[1]);
3806                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+2], triangle->vertex[2]);
3807                         // calculate bounds of triangle
3808                         triangle->mins[0] = min(triangle->vertex[0][0], min(triangle->vertex[1][0], triangle->vertex[2][0]));
3809                         triangle->mins[1] = min(triangle->vertex[0][1], min(triangle->vertex[1][1], triangle->vertex[2][1]));
3810                         triangle->mins[2] = min(triangle->vertex[0][2], min(triangle->vertex[1][2], triangle->vertex[2][2]));
3811                         triangle->maxs[0] = max(triangle->vertex[0][0], max(triangle->vertex[1][0], triangle->vertex[2][0]));
3812                         triangle->maxs[1] = max(triangle->vertex[0][1], max(triangle->vertex[1][1], triangle->vertex[2][1]));
3813                         triangle->maxs[2] = max(triangle->vertex[0][2], max(triangle->vertex[1][2], triangle->vertex[2][2]));
3814                         // pick an axial projection based on the triangle normal
3815                         TriangleNormal(triangle->vertex[0], triangle->vertex[1], triangle->vertex[2], normal);
3816                         axis = 0;
3817                         if (fabs(normal[1]) > fabs(normal[axis]))
3818                                 axis = 1;
3819                         if (fabs(normal[2]) > fabs(normal[axis]))
3820                                 axis = 2;
3821                         triangle->axis = axis;
3822                 }
3823         }
3824 }
3825
3826 static void Mod_GenerateLightmaps_DestroyTriangleInformation(dp_model_t *model)
3827 {
3828         if (mod_generatelightmaps_lightmaptriangles)
3829                 Mem_Free(mod_generatelightmaps_lightmaptriangles);
3830         mod_generatelightmaps_lightmaptriangles = NULL;
3831 }
3832
3833 float lmaxis[3][3] = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}};
3834
3835 static void Mod_GenerateLightmaps_CreateLightmaps(dp_model_t *model)
3836 {
3837         msurface_t *surface;
3838         int surfaceindex;
3839         int lightmapindex;
3840         int lightmapnumber;
3841         int i;
3842         int j;
3843         int k;
3844         int x;
3845         int y;
3846         int axis;
3847         int axis1;
3848         int axis2;
3849         int retry;
3850         int pixeloffset;
3851         float trianglenormal[3];
3852         float samplecenter[3];
3853         float samplenormal[3];
3854         float temp[3];
3855         float lmiscale[2];
3856         float slopex;
3857         float slopey;
3858         float slopebase;
3859         float lmscalepixels;
3860         float lmmins;
3861         float lmmaxs;
3862         float lm_basescalepixels;
3863         int lm_borderpixels;
3864         int lm_texturesize;
3865         //int lm_maxpixels;
3866         const int *e;
3867         lightmaptriangle_t *triangle;
3868         unsigned char *lightmappixels;
3869         unsigned char *deluxemappixels;
3870         mod_alloclightmap_state_t lmstate;
3871
3872         // generate lightmap projection information for all triangles
3873         if (model->texturepool == NULL)
3874                 model->texturepool = R_AllocTexturePool();
3875         lm_basescalepixels = 1.0f / max(0.0001f, mod_generatelightmaps_unitspersample.value);
3876         lm_borderpixels = mod_generatelightmaps_borderpixels.integer;
3877         lm_texturesize = bound(lm_borderpixels*2+1, 64, (int)vid.maxtexturesize_2d);
3878         //lm_maxpixels = lm_texturesize-(lm_borderpixels*2+1);
3879         Mod_AllocLightmap_Init(&lmstate, lm_texturesize, lm_texturesize);
3880         lightmapnumber = 0;
3881         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3882         {
3883                 surface = model->data_surfaces + surfaceindex;
3884                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3885                 lmscalepixels = lm_basescalepixels;
3886                 for (retry = 0;retry < 30;retry++)
3887                 {
3888                         // after a couple failed attempts, degrade quality to make it fit
3889                         if (retry > 1)
3890                                 lmscalepixels *= 0.5f;
3891                         for (i = 0;i < surface->num_triangles;i++)
3892                         {
3893                                 triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3894                                 triangle->lightmapindex = lightmapnumber;
3895                                 // calculate lightmap bounds in 3D pixel coordinates, limit size,
3896                                 // pick two planar axes for projection
3897                                 // lightmap coordinates here are in pixels
3898                                 // lightmap projections are snapped to pixel grid explicitly, such
3899                                 // that two neighboring triangles sharing an edge and projection
3900                                 // axis will have identical sampl espacing along their shared edge
3901                                 k = 0;
3902                                 for (j = 0;j < 3;j++)
3903                                 {
3904                                         if (j == triangle->axis)
3905                                                 continue;
3906                                         lmmins = floor(triangle->mins[j]*lmscalepixels)-lm_borderpixels;
3907                                         lmmaxs = floor(triangle->maxs[j]*lmscalepixels)+lm_borderpixels;
3908                                         triangle->lmsize[k] = (int)(lmmaxs-lmmins);
3909                                         triangle->lmbase[k] = lmmins/lmscalepixels;
3910                                         triangle->lmscale[k] = lmscalepixels;
3911                                         k++;
3912                                 }
3913                                 if (!Mod_AllocLightmap_Block(&lmstate, triangle->lmsize[0], triangle->lmsize[1], &triangle->lmoffset[0], &triangle->lmoffset[1]))
3914                                         break;
3915                         }
3916                         // if all fit in this texture, we're done with this surface
3917                         if (i == surface->num_triangles)
3918                                 break;
3919                         // if we haven't maxed out the lightmap size yet, we retry the
3920                         // entire surface batch...
3921                         if (lm_texturesize * 2 <= min(mod_generatelightmaps_texturesize.integer, (int)vid.maxtexturesize_2d))
3922                         {
3923                                 lm_texturesize *= 2;
3924                                 surfaceindex = -1;
3925                                 lightmapnumber = 0;
3926                                 Mod_AllocLightmap_Free(&lmstate);
3927                                 Mod_AllocLightmap_Init(&lmstate, lm_texturesize, lm_texturesize);
3928                                 break;
3929                         }
3930                         // if we have maxed out the lightmap size, and this triangle does
3931                         // not fit in the same texture as the rest of the surface, we have
3932                         // to retry the entire surface in a new texture (can only use one)
3933                         // with multiple retries, the lightmap quality degrades until it
3934                         // fits (or gives up)
3935                         if (surfaceindex > 0)
3936                                 lightmapnumber++;
3937                         Mod_AllocLightmap_Reset(&lmstate);
3938                 }
3939         }
3940         lightmapnumber++;
3941         Mod_AllocLightmap_Free(&lmstate);
3942
3943         // now put triangles together into lightmap textures, and do not allow
3944         // triangles of a surface to go into different textures (as that would
3945         // require rewriting the surface list)
3946         model->brushq3.deluxemapping_modelspace = true;
3947         model->brushq3.deluxemapping = true;
3948         model->brushq3.num_mergedlightmaps = lightmapnumber;
3949         model->brushq3.data_lightmaps = Mem_Alloc(model->mempool, model->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
3950         model->brushq3.data_deluxemaps = Mem_Alloc(model->mempool, model->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
3951         lightmappixels = Mem_Alloc(tempmempool, model->brushq3.num_mergedlightmaps * lm_texturesize * lm_texturesize * 4);
3952         deluxemappixels = Mem_Alloc(tempmempool, model->brushq3.num_mergedlightmaps * lm_texturesize * lm_texturesize * 4);
3953         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3954         {
3955                 surface = model->data_surfaces + surfaceindex;
3956                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3957                 for (i = 0;i < surface->num_triangles;i++)
3958                 {
3959                         triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3960                         TriangleNormal(triangle->vertex[0], triangle->vertex[1], triangle->vertex[2], trianglenormal);
3961                         VectorNormalize(trianglenormal);
3962                         VectorCopy(trianglenormal, samplenormal); // FIXME: this is supposed to be interpolated per pixel from vertices
3963                         axis = triangle->axis;
3964                         axis1 = axis == 0 ? 1 : 0;
3965                         axis2 = axis == 2 ? 1 : 2;
3966                         lmiscale[0] = 1.0f / triangle->lmscale[0];
3967                         lmiscale[1] = 1.0f / triangle->lmscale[1];
3968                         if (trianglenormal[axis] < 0)
3969                                 VectorNegate(trianglenormal, trianglenormal);
3970                         CrossProduct(lmaxis[axis2], trianglenormal, temp);slopex = temp[axis] / temp[axis1];
3971                         CrossProduct(lmaxis[axis1], trianglenormal, temp);slopey = temp[axis] / temp[axis2];
3972                         slopebase = triangle->vertex[0][axis] - triangle->vertex[0][axis1]*slopex - triangle->vertex[0][axis2]*slopey;
3973                         for (j = 0;j < 3;j++)
3974                         {
3975                                 float *t2f = model->surfmesh.data_texcoordlightmap2f + e[i*3+j]*2;
3976                                 t2f[0] = ((triangle->vertex[j][axis1] - triangle->lmbase[0]) * triangle->lmscale[0] + triangle->lmoffset[0]) / lm_texturesize;
3977                                 t2f[1] = ((triangle->vertex[j][axis2] - triangle->lmbase[1]) * triangle->lmscale[1] + triangle->lmoffset[1]) / lm_texturesize;
3978 #if 0
3979                                 samplecenter[axis1] = (t2f[0]*lm_texturesize-triangle->lmoffset[0])*lmiscale[0] + triangle->lmbase[0];
3980                                 samplecenter[axis2] = (t2f[1]*lm_texturesize-triangle->lmoffset[1])*lmiscale[1] + triangle->lmbase[1];
3981                                 samplecenter[axis] = samplecenter[axis1]*slopex + samplecenter[axis2]*slopey + slopebase;
3982                                 Con_Printf("%f:%f %f:%f %f:%f = %f %f\n", triangle->vertex[j][axis1], samplecenter[axis1], triangle->vertex[j][axis2], samplecenter[axis2], triangle->vertex[j][axis], samplecenter[axis], t2f[0], t2f[1]);
3983 #endif
3984                         }
3985
3986 #if 0
3987                         switch (axis)
3988                         {
3989                         default:
3990                         case 0:
3991                                 forward[0] = 0;
3992                                 forward[1] = 1.0f / triangle->lmscale[0];
3993                                 forward[2] = 0;
3994                                 left[0] = 0;
3995                                 left[1] = 0;
3996                                 left[2] = 1.0f / triangle->lmscale[1];
3997                                 up[0] = 1.0f;
3998                                 up[1] = 0;
3999                                 up[2] = 0;
4000                                 origin[0] = 0;
4001                                 origin[1] = triangle->lmbase[0];
4002                                 origin[2] = triangle->lmbase[1];
4003                                 break;
4004                         case 1:
4005                                 forward[0] = 1.0f / triangle->lmscale[0];
4006                                 forward[1] = 0;
4007                                 forward[2] = 0;
4008                                 left[0] = 0;
4009                                 left[1] = 0;
4010                                 left[2] = 1.0f / triangle->lmscale[1];
4011                                 up[0] = 0;
4012                                 up[1] = 1.0f;
4013                                 up[2] = 0;
4014                                 origin[0] = triangle->lmbase[0];
4015                                 origin[1] = 0;
4016                                 origin[2] = triangle->lmbase[1];
4017                                 break;
4018                         case 2:
4019                                 forward[0] = 1.0f / triangle->lmscale[0];
4020                                 forward[1] = 0;
4021                                 forward[2] = 0;
4022                                 left[0] = 0;
4023                                 left[1] = 1.0f / triangle->lmscale[1];
4024                                 left[2] = 0;
4025                                 up[0] = 0;
4026                                 up[1] = 0;
4027                                 up[2] = 1.0f;
4028                                 origin[0] = triangle->lmbase[0];
4029                                 origin[1] = triangle->lmbase[1];
4030                                 origin[2] = 0;
4031                                 break;
4032                         }
4033                         Matrix4x4_FromVectors(&backmatrix, forward, left, up, origin);
4034 #endif
4035 #define LM_DIST_EPSILON (1.0f / 32.0f)
4036                         for (y = 0;y < triangle->lmsize[1];y++)
4037                         {
4038                                 pixeloffset = ((triangle->lightmapindex * lm_texturesize + y + triangle->lmoffset[1]) * lm_texturesize + triangle->lmoffset[0]) * 4;
4039                                 for (x = 0;x < triangle->lmsize[0];x++, pixeloffset += 4)
4040                                 {
4041                                         samplecenter[axis1] = (x+0.5f)*lmiscale[0] + triangle->lmbase[0];
4042                                         samplecenter[axis2] = (y+0.5f)*lmiscale[1] + triangle->lmbase[1];
4043                                         samplecenter[axis] = samplecenter[axis1]*slopex + samplecenter[axis2]*slopey + slopebase;
4044                                         VectorMA(samplecenter, 0.125f, samplenormal, samplecenter);
4045                                         Mod_GenerateLightmaps_LightmapSample(samplecenter, samplenormal, lightmappixels + pixeloffset, deluxemappixels + pixeloffset);
4046                                 }
4047                         }
4048                 }
4049         }
4050
4051         for (lightmapindex = 0;lightmapindex < model->brushq3.num_mergedlightmaps;lightmapindex++)
4052         {
4053                 model->brushq3.data_lightmaps[lightmapindex] = R_LoadTexture2D(model->texturepool, va("lightmap%i", lightmapindex), lm_texturesize, lm_texturesize, lightmappixels + lightmapindex * lm_texturesize * lm_texturesize * 4, TEXTYPE_BGRA, TEXF_FORCELINEAR, NULL);
4054                 model->brushq3.data_deluxemaps[lightmapindex] = R_LoadTexture2D(model->texturepool, va("deluxemap%i", lightmapindex), lm_texturesize, lm_texturesize, deluxemappixels + lightmapindex * lm_texturesize * lm_texturesize * 4, TEXTYPE_BGRA, TEXF_FORCELINEAR, NULL);
4055         }
4056
4057         if (lightmappixels)
4058                 Mem_Free(lightmappixels);
4059         if (deluxemappixels)
4060                 Mem_Free(deluxemappixels);
4061
4062         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
4063         {
4064                 surface = model->data_surfaces + surfaceindex;
4065                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
4066                 if (!surface->num_triangles)
4067                         continue;
4068                 lightmapindex = mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle].lightmapindex;
4069                 surface->lightmaptexture = model->brushq3.data_lightmaps[lightmapindex];
4070                 surface->deluxemaptexture = model->brushq3.data_deluxemaps[lightmapindex];
4071                 surface->lightmapinfo = NULL;
4072         }
4073
4074         model->brush.LightPoint = Mod_GenerateLightmaps_LightPoint;
4075         model->brushq1.lightdata = NULL;
4076         model->brushq1.lightmapupdateflags = NULL;
4077         model->brushq1.firstrender = false;
4078         model->brushq1.num_lightstyles = 0;
4079         model->brushq1.data_lightstyleinfo = NULL;
4080         for (i = 0;i < model->brush.numsubmodels;i++)
4081         {
4082                 model->brush.submodels[i]->brushq1.lightmapupdateflags = NULL;
4083                 model->brush.submodels[i]->brushq1.firstrender = false;
4084                 model->brush.submodels[i]->brushq1.num_lightstyles = 0;
4085                 model->brush.submodels[i]->brushq1.data_lightstyleinfo = NULL;
4086         }
4087 }
4088
4089 static void Mod_GenerateLightmaps_UpdateVertexColors(dp_model_t *model)
4090 {
4091         int i;
4092         for (i = 0;i < model->surfmesh.num_vertices;i++)
4093                 Mod_GenerateLightmaps_VertexSample(model->surfmesh.data_vertex3f + 3*i, model->surfmesh.data_normal3f + 3*i, model->surfmesh.data_lightmapcolor4f + 4*i);
4094 }
4095
4096 static void Mod_GenerateLightmaps_UpdateLightGrid(dp_model_t *model)
4097 {
4098         int x;
4099         int y;
4100         int z;
4101         int index = 0;
4102         float pos[3];
4103         for (z = 0;z < model->brushq3.num_lightgrid_isize[2];z++)
4104         {
4105                 pos[2] = (model->brushq3.num_lightgrid_imins[2] + z + 0.5f) * model->brushq3.num_lightgrid_cellsize[2];
4106                 for (y = 0;y < model->brushq3.num_lightgrid_isize[1];y++)
4107                 {
4108                         pos[1] = (model->brushq3.num_lightgrid_imins[1] + y + 0.5f) * model->brushq3.num_lightgrid_cellsize[1];
4109                         for (x = 0;x < model->brushq3.num_lightgrid_isize[0];x++, index++)
4110                         {
4111                                 pos[0] = (model->brushq3.num_lightgrid_imins[0] + x + 0.5f) * model->brushq3.num_lightgrid_cellsize[0];
4112                                 Mod_GenerateLightmaps_GridSample(pos, model->brushq3.data_lightgrid + index);
4113                         }
4114                 }
4115         }
4116 }
4117
4118 extern cvar_t mod_q3bsp_nolightmaps;
4119 static void Mod_GenerateLightmaps(dp_model_t *model)
4120 {
4121         //lightmaptriangle_t *lightmaptriangles = Mem_Alloc(model->mempool, model->surfmesh.num_triangles * sizeof(lightmaptriangle_t));
4122         dp_model_t *oldloadmodel = loadmodel;
4123         loadmodel = model;
4124
4125         Mod_GenerateLightmaps_InitSampleOffsets(model);
4126         Mod_GenerateLightmaps_DestroyLightmaps(model);
4127         Mod_GenerateLightmaps_UnweldTriangles(model);
4128         Mod_GenerateLightmaps_CreateTriangleInformation(model);
4129         Mod_GenerateLightmaps_CreateLights(model);
4130         if(!mod_q3bsp_nolightmaps.integer)
4131                 Mod_GenerateLightmaps_CreateLightmaps(model);
4132         Mod_GenerateLightmaps_UpdateVertexColors(model);
4133         Mod_GenerateLightmaps_UpdateLightGrid(model);
4134         Mod_GenerateLightmaps_DestroyLights(model);
4135         Mod_GenerateLightmaps_DestroyTriangleInformation(model);
4136
4137         loadmodel = oldloadmodel;
4138 }
4139
4140 static void Mod_GenerateLightmaps_f(void)
4141 {
4142         if (Cmd_Argc() != 1)
4143         {
4144                 Con_Printf("usage: mod_generatelightmaps\n");
4145                 return;
4146         }
4147         if (!cl.worldmodel)
4148         {
4149                 Con_Printf("no worldmodel loaded\n");
4150                 return;
4151         }
4152         Mod_GenerateLightmaps(cl.worldmodel);
4153 }