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 }
  96
  97 static void mod_newmap(void)
  98 {
  99         msurface_t *surface;
 100         int i, j, k, surfacenum, ssize, tsize;
 101         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 102         dp_model_t *mod;
 103
 104         for (i = 0;i < nummodels;i++)
 105         {
 106                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool)
 107                 {
 108                         for (j = 0;j < mod->num_textures && mod->data_textures;j++)
 109                         {
 110                                 for (k = 0;k < mod->data_textures[j].numskinframes;k++)
 111                                         R_SkinFrame_MarkUsed(mod->data_textures[j].skinframes[k]);
 112                                 for (k = 0;k < mod->data_textures[j].backgroundnumskinframes;k++)
 113                                         R_SkinFrame_MarkUsed(mod->data_textures[j].backgroundskinframes[k]);
 114                         }
 115                         if (mod->brush.solidskyskinframe)
 116                                 R_SkinFrame_MarkUsed(mod->brush.solidskyskinframe);
 117                         if (mod->brush.alphaskyskinframe)
 118                                 R_SkinFrame_MarkUsed(mod->brush.alphaskyskinframe);
 119                 }
 120         }
 121
 122         if (!cl_stainmaps_clearonload.integer)
 123                 return;
 124
 125         for (i = 0;i < nummodels;i++)
 126         {
 127                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool && mod->data_surfaces)
 128                 {
 129                         for (surfacenum = 0, surface = mod->data_surfaces;surfacenum < mod->num_surfaces;surfacenum++, surface++)
 130                         {
 131                                 if (surface->lightmapinfo && surface->lightmapinfo->stainsamples)
 132                                 {
 133                                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
 134                                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
 135                                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
 136                                         mod->brushq1.lightmapupdateflags[surfacenum] = true;
 137                                 }
 138                         }
 139                 }
 140         }
 141 }
 142
 143 /*
 144 ===============
 145 Mod_Init
 146 ===============
 147 */
 148 static void Mod_Print(void);
 149 static void Mod_Precache (void);
 150 static void Mod_Decompile_f(void);
 151 static void Mod_GenerateLightmaps_f(void);
 152 void Mod_Init (void)
 153 {
 154         mod_mempool = Mem_AllocPool("modelinfo", 0, NULL);
 155         Mem_ExpandableArray_NewArray(&models, mod_mempool, sizeof(dp_model_t), 16);
 156
 157         Mod_BrushInit();
 158         Mod_AliasInit();
 159         Mod_SpriteInit();
 160
 161         Cvar_RegisterVariable(&r_mipskins);
 162         Cvar_RegisterVariable(&mod_generatelightmaps_unitspersample);
 163         Cvar_RegisterVariable(&mod_generatelightmaps_borderpixels);
 164         Cvar_RegisterVariable(&mod_generatelightmaps_texturesize);
 165
 166         Cvar_RegisterVariable(&mod_generatelightmaps_lightmapsamples);
 167         Cvar_RegisterVariable(&mod_generatelightmaps_vertexsamples);
 168         Cvar_RegisterVariable(&mod_generatelightmaps_gridsamples);
 169         Cvar_RegisterVariable(&mod_generatelightmaps_lightmapradius);
 170         Cvar_RegisterVariable(&mod_generatelightmaps_vertexradius);
 171         Cvar_RegisterVariable(&mod_generatelightmaps_gridradius);
 172
 173         Cmd_AddCommand ("modellist", Mod_Print, "prints a list of loaded models");
 174         Cmd_AddCommand ("modelprecache", Mod_Precache, "load a model");
 175         Cmd_AddCommand ("modeldecompile", Mod_Decompile_f, "exports a model in several formats for editing purposes");
 176         Cmd_AddCommand ("mod_generatelightmaps", Mod_GenerateLightmaps_f, "rebuilds lighting on current worldmodel");
 177 }
 178
 179 void Mod_RenderInit(void)
 180 {
 181         R_RegisterModule("Models", mod_start, mod_shutdown, mod_newmap);
 182 }
 183
 184 void Mod_UnloadModel (dp_model_t *mod)
 185 {
 186         char name[MAX_QPATH];
 187         qboolean used;
 188         dp_model_t *parentmodel;
 189
 190         if (developer_loading.integer)
 191                 Con_Printf("unloading model %s\n", mod->name);
 192
 193         strlcpy(name, mod->name, sizeof(name));
 194         parentmodel = mod->brush.parentmodel;
 195         used = mod->used;
 196         if (mod->surfmesh.ebo3i)
 197                 R_Mesh_DestroyBufferObject(mod->surfmesh.ebo3i);
 198         if (mod->surfmesh.ebo3s)
 199                 R_Mesh_DestroyBufferObject(mod->surfmesh.ebo3s);
 200         if (mod->surfmesh.vbo)
 201                 R_Mesh_DestroyBufferObject(mod->surfmesh.vbo);
 202         // free textures/memory attached to the model
 203         R_FreeTexturePool(&mod->texturepool);
 204         Mem_FreePool(&mod->mempool);
 205         // clear the struct to make it available
 206         memset(mod, 0, sizeof(dp_model_t));
 207         // restore the fields we want to preserve
 208         strlcpy(mod->name, name, sizeof(mod->name));
 209         mod->brush.parentmodel = parentmodel;
 210         mod->used = used;
 211         mod->loaded = false;
 212 }
 213
 214 void R_Model_Null_Draw(entity_render_t *ent)
 215 {
 216         return;
 217 }
 218
 219
 220 typedef void (*mod_framegroupify_parsegroups_t) (unsigned int i, int start, int len, float fps, qboolean loop, void *pass);
 221
 222 int Mod_FrameGroupify_ParseGroups(const char *buf, mod_framegroupify_parsegroups_t cb, void *pass)
 223 {
 224         const char *bufptr;
 225         int start, len;
 226         float fps;
 227         unsigned int i;
 228         qboolean loop;
 229
 230         bufptr = buf;
 231         i = 0;
 232         for(;;)
 233         {
 234                 // an anim scene!
 235                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 236                         break;
 237                 if (!strcmp(com_token, "\n"))
 238                         continue; // empty line
 239                 start = atoi(com_token);
 240                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 241                         break;
 242                 if (!strcmp(com_token, "\n"))
 243                 {
 244                         Con_Printf("framegroups file: missing number of frames\n");
 245                         continue;
 246                 }
 247                 len = atoi(com_token);
 248                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 249                         break;
 250                 // we default to looping as it's usually wanted, so to NOT loop you append a 0
 251                 if (strcmp(com_token, "\n"))
 252                 {
 253                         fps = atof(com_token);
 254                         if (!COM_ParseToken_Simple(&bufptr, true, false))
 255                                 break;
 256                         if (strcmp(com_token, "\n"))
 257                                 loop = atoi(com_token) != 0;
 258                         else
 259                                 loop = true;
 260                 }
 261                 else
 262                 {
 263                         fps = 20;
 264                         loop = true;
 265                 }
 266
 267                 if(cb)
 268                         cb(i, start, len, fps, loop, pass);
 269                 ++i;
 270         }
 271
 272         return i;
 273 }
 274
 275 void Mod_FrameGroupify_ParseGroups_Count (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 276 {
 277         unsigned int *cnt = (unsigned int *) pass;
 278         ++*cnt;
 279 }
 280
 281 void Mod_FrameGroupify_ParseGroups_Store (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 282 {
 283         dp_model_t *mod = (dp_model_t *) pass;
 284         animscene_t *anim = &mod->animscenes[i];
 285         dpsnprintf(anim->name, sizeof(anim[i].name), "groupified_%d", i);
 286         anim->firstframe = bound(0, start, mod->num_poses - 1);
 287         anim->framecount = bound(1, len, mod->num_poses - anim->firstframe);
 288         anim->framerate = max(1, fps);
 289         anim->loop = !!loop;
 290         //Con_Printf("frame group %d is %d %d %f %d\n", i, start, len, fps, loop);
 291 }
 292
 293 void Mod_FrameGroupify(dp_model_t *mod, const char *buf)
 294 {
 295         unsigned int cnt;
 296
 297         // 0. count
 298         cnt = Mod_FrameGroupify_ParseGroups(buf, NULL, NULL);
 299         if(!cnt)
 300         {
 301                 Con_Printf("no scene found in framegroups file, aborting\n");
 302                 return;
 303         }
 304         mod->numframes = cnt;
 305
 306         // 1. reallocate
 307         // (we do not free the previous animscenes, but model unloading will free the pool owning them, so it's okay)
 308         mod->animscenes = (animscene_t *) Mem_Alloc(mod->mempool, sizeof(animscene_t) * mod->numframes);
 309
 310         // 2. parse
 311         Mod_FrameGroupify_ParseGroups(buf, Mod_FrameGroupify_ParseGroups_Store, mod);
 312 }
 313
 314 void Mod_FindPotentialDeforms(dp_model_t *mod)
 315 {
 316         int i, j;
 317         texture_t *texture;
 318         mod->wantnormals = false;
 319         mod->wanttangents = false;
 320         for (i = 0;i < mod->num_textures;i++)
 321         {
 322                 texture = mod->data_textures + i;
 323                 if (texture->tcgen.tcgen == Q3TCGEN_ENVIRONMENT)
 324                         mod->wantnormals = true;
 325                 for (j = 0;j < Q3MAXDEFORMS;j++)
 326                 {
 327                         if (texture->deforms[j].deform == Q3DEFORM_AUTOSPRITE)
 328                         {
 329                                 mod->wanttangents = true;
 330                                 mod->wantnormals = true;
 331                                 break;
 332                         }
 333                         if (texture->deforms[j].deform != Q3DEFORM_NONE)
 334                                 mod->wantnormals = true;
 335                 }
 336         }
 337 }
 338
 339 /*
 340 ==================
 341 Mod_LoadModel
 342
 343 Loads a model
 344 ==================
 345 */
 346 dp_model_t *Mod_LoadModel(dp_model_t *mod, qboolean crash, qboolean checkdisk)
 347 {
 348         int num;
 349         unsigned int crc;
 350         void *buf;
 351         fs_offset_t filesize;
 352
 353         mod->used = true;
 354
 355         if (mod->name[0] == '*') // submodel
 356                 return mod;
 357
 358         if (!strcmp(mod->name, "null"))
 359         {
 360                 if(mod->loaded)
 361                         return mod;
 362
 363                 if (mod->loaded || mod->mempool)
 364                         Mod_UnloadModel(mod);
 365
 366                 if (developer_loading.integer)
 367                         Con_Printf("loading model %s\n", mod->name);
 368
 369                 mod->used = true;
 370                 mod->crc = (unsigned int)-1;
 371                 mod->loaded = false;
 372
 373                 VectorClear(mod->normalmins);
 374                 VectorClear(mod->normalmaxs);
 375                 VectorClear(mod->yawmins);
 376                 VectorClear(mod->yawmaxs);
 377                 VectorClear(mod->rotatedmins);
 378                 VectorClear(mod->rotatedmaxs);
 379
 380                 mod->modeldatatypestring = "null";
 381                 mod->type = mod_null;
 382                 mod->Draw = R_Model_Null_Draw;
 383                 mod->numframes = 2;
 384                 mod->numskins = 1;
 385
 386                 // no fatal errors occurred, so this model is ready to use.
 387                 mod->loaded = true;
 388
 389                 return mod;
 390         }
 391
 392         crc = 0;
 393         buf = NULL;
 394
 395         // even if the model is loaded it still may need reloading...
 396
 397         // if it is not loaded or checkdisk is true we need to calculate the crc
 398         if (!mod->loaded || checkdisk)
 399         {
 400                 if (checkdisk && mod->loaded)
 401                         Con_DPrintf("checking model %s\n", mod->name);
 402                 buf = FS_LoadFile (mod->name, tempmempool, false, &filesize);
 403                 if (buf)
 404                 {
 405                         crc = CRC_Block((unsigned char *)buf, filesize);
 406                         // we need to reload the model if the crc does not match
 407                         if (mod->crc != crc)
 408                                 mod->loaded = false;
 409                 }
 410         }
 411
 412         // if the model is already loaded and checks passed, just return
 413         if (mod->loaded)
 414         {
 415                 if (buf)
 416                         Mem_Free(buf);
 417                 return mod;
 418         }
 419
 420         if (developer_loading.integer)
 421                 Con_Printf("loading model %s\n", mod->name);
 422
 423         SCR_PushLoadingScreen(true, mod->name, 1);
 424
 425         // LordHavoc: unload the existing model in this slot (if there is one)
 426         if (mod->loaded || mod->mempool)
 427                 Mod_UnloadModel(mod);
 428
 429         // load the model
 430         mod->used = true;
 431         mod->crc = crc;
 432         // errors can prevent the corresponding mod->loaded = true;
 433         mod->loaded = false;
 434
 435         // default model radius and bounding box (mainly for missing models)
 436         mod->radius = 16;
 437         VectorSet(mod->normalmins, -mod->radius, -mod->radius, -mod->radius);
 438         VectorSet(mod->normalmaxs, mod->radius, mod->radius, mod->radius);
 439         VectorSet(mod->yawmins, -mod->radius, -mod->radius, -mod->radius);
 440         VectorSet(mod->yawmaxs, mod->radius, mod->radius, mod->radius);
 441         VectorSet(mod->rotatedmins, -mod->radius, -mod->radius, -mod->radius);
 442         VectorSet(mod->rotatedmaxs, mod->radius, mod->radius, mod->radius);
 443
 444         if (!q3shaders_mem)
 445         {
 446                 // load q3 shaders for the first time, or after a level change
 447                 Mod_LoadQ3Shaders();
 448         }
 449
 450         if (buf)
 451         {
 452                 char *bufend = (char *)buf + filesize;
 453
 454                 // all models use memory, so allocate a memory pool
 455                 mod->mempool = Mem_AllocPool(mod->name, 0, NULL);
 456
 457                 num = LittleLong(*((int *)buf));
 458                 // call the apropriate loader
 459                 loadmodel = mod;
 460                      if (!strcasecmp(FS_FileExtension(mod->name), "obj")) Mod_OBJ_Load(mod, buf, bufend);
 461                 else if (!memcmp(buf, "IDPO", 4)) Mod_IDP0_Load(mod, buf, bufend);
 462                 else if (!memcmp(buf, "IDP2", 4)) Mod_IDP2_Load(mod, buf, bufend);
 463                 else if (!memcmp(buf, "IDP3", 4)) Mod_IDP3_Load(mod, buf, bufend);
 464                 else if (!memcmp(buf, "IDSP", 4)) Mod_IDSP_Load(mod, buf, bufend);
 465                 else if (!memcmp(buf, "IDS2", 4)) Mod_IDS2_Load(mod, buf, bufend);
 466                 else if (!memcmp(buf, "IBSP", 4)) Mod_IBSP_Load(mod, buf, bufend);
 467                 else if (!memcmp(buf, "ZYMOTICMODEL", 12)) Mod_ZYMOTICMODEL_Load(mod, buf, bufend);
 468                 else if (!memcmp(buf, "DARKPLACESMODEL", 16)) Mod_DARKPLACESMODEL_Load(mod, buf, bufend);
 469                 else if (!memcmp(buf, "ACTRHEAD", 8)) Mod_PSKMODEL_Load(mod, buf, bufend);
 470                 else if (strlen(mod->name) >= 4 && !strcmp(mod->name + strlen(mod->name) - 4, ".map")) Mod_MAP_Load(mod, buf, bufend);
 471                 else if (num == BSPVERSION || num == 30) Mod_Q1BSP_Load(mod, buf, bufend);
 472                 else Con_Printf("Mod_LoadModel: model \"%s\" is of unknown/unsupported type\n", mod->name);
 473                 Mem_Free(buf);
 474
 475                 Mod_FindPotentialDeforms(mod);
 476
 477                 buf = FS_LoadFile (va("%s.framegroups", mod->name), tempmempool, false, &filesize);
 478                 if(buf)
 479                 {
 480                         Mod_FrameGroupify(mod, (const char *)buf);
 481                         Mem_Free(buf);
 482                 }
 483
 484                 Mod_BuildVBOs();
 485         }
 486         else if (crash)
 487         {
 488                 // LordHavoc: Sys_Error was *ANNOYING*
 489                 Con_Printf ("Mod_LoadModel: %s not found\n", mod->name);
 490         }
 491
 492         // no fatal errors occurred, so this model is ready to use.
 493         mod->loaded = true;
 494
 495         SCR_PopLoadingScreen(false);
 496
 497         return mod;
 498 }
 499
 500 void Mod_ClearUsed(void)
 501 {
 502         int i;
 503         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 504         dp_model_t *mod;
 505         for (i = 0;i < nummodels;i++)
 506                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0])
 507                         mod->used = false;
 508 }
 509
 510 void Mod_PurgeUnused(void)
 511 {
 512         int i;
 513         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 514         dp_model_t *mod;
 515         for (i = 0;i < nummodels;i++)
 516         {
 517                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && !mod->used)
 518                 {
 519                         Mod_UnloadModel(mod);
 520                         Mem_ExpandableArray_FreeRecord(&models, mod);
 521                 }
 522         }
 523 }
 524
 525 /*
 526 ==================
 527 Mod_FindName
 528
 529 ==================
 530 */
 531 dp_model_t *Mod_FindName(const char *name, const char *parentname)
 532 {
 533         int i;
 534         int nummodels;
 535         dp_model_t *mod;
 536
 537         if (!parentname)
 538                 parentname = "";
 539
 540         // if we're not dedicatd, the renderer calls will crash without video
 541         Host_StartVideo();
 542
 543         nummodels = Mem_ExpandableArray_IndexRange(&models);
 544
 545         if (!name[0])
 546                 Host_Error ("Mod_ForName: NULL name");
 547
 548         // search the currently loaded models
 549         for (i = 0;i < nummodels;i++)
 550         {
 551                 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))))
 552                 {
 553                         mod->used = true;
 554                         return mod;
 555                 }
 556         }
 557
 558         // no match found, create a new one
 559         mod = (dp_model_t *) Mem_ExpandableArray_AllocRecord(&models);
 560         strlcpy(mod->name, name, sizeof(mod->name));
 561         if (parentname[0])
 562                 mod->brush.parentmodel = Mod_FindName(parentname, NULL);
 563         else
 564                 mod->brush.parentmodel = NULL;
 565         mod->loaded = false;
 566         mod->used = true;
 567         return mod;
 568 }
 569
 570 /*
 571 ==================
 572 Mod_ForName
 573
 574 Loads in a model for the given name
 575 ==================
 576 */
 577 dp_model_t *Mod_ForName(const char *name, qboolean crash, qboolean checkdisk, const char *parentname)
 578 {
 579         dp_model_t *model;
 580         model = Mod_FindName(name, parentname);
 581         if (!model->loaded || checkdisk)
 582                 Mod_LoadModel(model, crash, checkdisk);
 583         return model;
 584 }
 585
 586 /*
 587 ==================
 588 Mod_Reload
 589
 590 Reloads all models if they have changed
 591 ==================
 592 */
 593 void Mod_Reload(void)
 594 {
 595         int i, count;
 596         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 597         dp_model_t *mod;
 598
 599         SCR_PushLoadingScreen(false, "Reloading models", 1.0);
 600         count = 0;
 601         for (i = 0;i < nummodels;i++)
 602                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 603                         ++count;
 604         for (i = 0;i < nummodels;i++)
 605                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 606                 {
 607                         SCR_PushLoadingScreen(true, mod->name, 1.0 / count);
 608                         Mod_LoadModel(mod, true, true);
 609                         SCR_PopLoadingScreen(false);
 610                 }
 611         SCR_PopLoadingScreen(false);
 612 }
 613
 614 unsigned char *mod_base;
 615
 616
 617 //=============================================================================
 618
 619 /*
 620 ================
 621 Mod_Print
 622 ================
 623 */
 624 static void Mod_Print(void)
 625 {
 626         int i;
 627         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 628         dp_model_t *mod;
 629
 630         Con_Print("Loaded models:\n");
 631         for (i = 0;i < nummodels;i++)
 632         {
 633                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
 634                 {
 635                         if (mod->brush.numsubmodels)
 636                                 Con_Printf("%4iK %s (%i submodels)\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name, mod->brush.numsubmodels);
 637                         else
 638                                 Con_Printf("%4iK %s\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name);
 639                 }
 640         }
 641 }
 642
 643 /*
 644 ================
 645 Mod_Precache
 646 ================
 647 */
 648 static void Mod_Precache(void)
 649 {
 650         if (Cmd_Argc() == 2)
 651                 Mod_ForName(Cmd_Argv(1), false, true, Cmd_Argv(1)[0] == '*' ? cl.model_name[1] : NULL);
 652         else
 653                 Con_Print("usage: modelprecache <filename>\n");
 654 }
 655
 656 int Mod_BuildVertexRemapTableFromElements(int numelements, const int *elements, int numvertices, int *remapvertices)
 657 {
 658         int i, count;
 659         unsigned char *used;
 660         used = (unsigned char *)Mem_Alloc(tempmempool, numvertices);
 661         memset(used, 0, numvertices);
 662         for (i = 0;i < numelements;i++)
 663                 used[elements[i]] = 1;
 664         for (i = 0, count = 0;i < numvertices;i++)
 665                 remapvertices[i] = used[i] ? count++ : -1;
 666         Mem_Free(used);
 667         return count;
 668 }
 669
 670 #if 1
 671 // fast way, using an edge hash
 672 #define TRIANGLEEDGEHASH 8192
 673 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 674 {
 675         int i, j, p, e1, e2, *n, hashindex, count, match;
 676         const int *e;
 677         typedef struct edgehashentry_s
 678         {
 679                 struct edgehashentry_s *next;
 680                 int triangle;
 681                 int element[2];
 682         }
 683         edgehashentry_t;
 684         static edgehashentry_t **edgehash;
 685         edgehashentry_t *edgehashentries, *hash;
 686         if (!numtriangles)
 687                 return;
 688         edgehash = Mem_Alloc(tempmempool, TRIANGLEEDGEHASH * sizeof(*edgehash));
 689         // if there are too many triangles for the stack array, allocate larger buffer
 690         edgehashentries = (edgehashentry_t *)Mem_Alloc(tempmempool, numtriangles * 3 * sizeof(edgehashentry_t));
 691         // find neighboring triangles
 692         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 693         {
 694                 for (j = 0, p = 2;j < 3;p = j, j++)
 695                 {
 696                         e1 = e[p];
 697                         e2 = e[j];
 698                         // this hash index works for both forward and backward edges
 699                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 700                         hash = edgehashentries + i * 3 + j;
 701                         hash->next = edgehash[hashindex];
 702                         edgehash[hashindex] = hash;
 703                         hash->triangle = i;
 704                         hash->element[0] = e1;
 705                         hash->element[1] = e2;
 706                 }
 707         }
 708         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 709         {
 710                 for (j = 0, p = 2;j < 3;p = j, j++)
 711                 {
 712                         e1 = e[p];
 713                         e2 = e[j];
 714                         // this hash index works for both forward and backward edges
 715                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 716                         count = 0;
 717                         match = -1;
 718                         for (hash = edgehash[hashindex];hash;hash = hash->next)
 719                         {
 720                                 if (hash->element[0] == e2 && hash->element[1] == e1)
 721                                 {
 722                                         if (hash->triangle != i)
 723                                                 match = hash->triangle;
 724                                         count++;
 725                                 }
 726                                 else if ((hash->element[0] == e1 && hash->element[1] == e2))
 727                                         count++;
 728                         }
 729                         // detect edges shared by three triangles and make them seams
 730                         if (count > 2)
 731                                 match = -1;
 732                         n[p] = match;
 733                 }
 734
 735                 // also send a keepalive here (this can take a while too!)
 736                 CL_KeepaliveMessage(false);
 737         }
 738         // free the allocated buffer
 739         Mem_Free(edgehashentries);
 740         Mem_Free(edgehash);
 741 }
 742 #else
 743 // very slow but simple way
 744 static int Mod_FindTriangleWithEdge(const int *elements, int numtriangles, int start, int end, int ignore)
 745 {
 746         int i, match, count;
 747         count = 0;
 748         match = -1;
 749         for (i = 0;i < numtriangles;i++, elements += 3)
 750         {
 751                      if ((elements[0] == start && elements[1] == end)
 752                       || (elements[1] == start && elements[2] == end)
 753                       || (elements[2] == start && elements[0] == end))
 754                 {
 755                         if (i != ignore)
 756                                 match = i;
 757                         count++;
 758                 }
 759                 else if ((elements[1] == start && elements[0] == end)
 760                       || (elements[2] == start && elements[1] == end)
 761                       || (elements[0] == start && elements[2] == end))
 762                         count++;
 763         }
 764         // detect edges shared by three triangles and make them seams
 765         if (count > 2)
 766                 match = -1;
 767         return match;
 768 }
 769
 770 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 771 {
 772         int i, *n;
 773         const int *e;
 774         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 775         {
 776                 n[0] = Mod_FindTriangleWithEdge(elements, numtriangles, e[1], e[0], i);
 777                 n[1] = Mod_FindTriangleWithEdge(elements, numtriangles, e[2], e[1], i);
 778                 n[2] = Mod_FindTriangleWithEdge(elements, numtriangles, e[0], e[2], i);
 779         }
 780 }
 781 #endif
 782
 783 void Mod_ValidateElements(int *elements, int numtriangles, int firstvertex, int numverts, const char *filename, int fileline)
 784 {
 785         int i, warned = false, endvertex = firstvertex + numverts;
 786         for (i = 0;i < numtriangles * 3;i++)
 787         {
 788                 if (elements[i] < firstvertex || elements[i] >= endvertex)
 789                 {
 790                         if (!warned)
 791                         {
 792                                 warned = true;
 793                                 Con_Printf("Mod_ValidateElements: out of bounds elements detected at %s:%d\n", filename, fileline);
 794                         }
 795                         elements[i] = firstvertex;
 796                 }
 797         }
 798 }
 799
 800 // warning: this is an expensive function!
 801 void Mod_BuildNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const int *elements, float *normal3f, qboolean areaweighting)
 802 {
 803         int i, j;
 804         const int *element;
 805         float *vectorNormal;
 806         float areaNormal[3];
 807         // clear the vectors
 808         memset(normal3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 809         // process each vertex of each triangle and accumulate the results
 810         // use area-averaging, to make triangles with a big area have a bigger
 811         // weighting on the vertex normal than triangles with a small area
 812         // to do so, just add the 'normals' together (the bigger the area
 813         // the greater the length of the normal is
 814         element = elements;
 815         for (i = 0; i < numtriangles; i++, element += 3)
 816         {
 817                 TriangleNormal(
 818                         vertex3f + element[0] * 3,
 819                         vertex3f + element[1] * 3,
 820                         vertex3f + element[2] * 3,
 821                         areaNormal
 822                         );
 823
 824                 if (!areaweighting)
 825                         VectorNormalize(areaNormal);
 826
 827                 for (j = 0;j < 3;j++)
 828                 {
 829                         vectorNormal = normal3f + element[j] * 3;
 830                         vectorNormal[0] += areaNormal[0];
 831                         vectorNormal[1] += areaNormal[1];
 832                         vectorNormal[2] += areaNormal[2];
 833                 }
 834         }
 835         // and just normalize the accumulated vertex normal in the end
 836         vectorNormal = normal3f + 3 * firstvertex;
 837         for (i = 0; i < numvertices; i++, vectorNormal += 3)
 838                 VectorNormalize(vectorNormal);
 839 }
 840
 841 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)
 842 {
 843         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 844         // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 845         // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 846
 847         // 6 multiply, 9 subtract
 848         VectorSubtract(v1, v0, v10);
 849         VectorSubtract(v2, v0, v20);
 850         normal3f[0] = v20[1] * v10[2] - v20[2] * v10[1];
 851         normal3f[1] = v20[2] * v10[0] - v20[0] * v10[2];
 852         normal3f[2] = v20[0] * v10[1] - v20[1] * v10[0];
 853         // 12 multiply, 10 subtract
 854         tc10[1] = tc1[1] - tc0[1];
 855         tc20[1] = tc2[1] - tc0[1];
 856         svector3f[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 857         svector3f[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 858         svector3f[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 859         tc10[0] = tc1[0] - tc0[0];
 860         tc20[0] = tc2[0] - tc0[0];
 861         tvector3f[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 862         tvector3f[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 863         tvector3f[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 864         // 12 multiply, 4 add, 6 subtract
 865         f = DotProduct(svector3f, normal3f);
 866         svector3f[0] -= f * normal3f[0];
 867         svector3f[1] -= f * normal3f[1];
 868         svector3f[2] -= f * normal3f[2];
 869         f = DotProduct(tvector3f, normal3f);
 870         tvector3f[0] -= f * normal3f[0];
 871         tvector3f[1] -= f * normal3f[1];
 872         tvector3f[2] -= f * normal3f[2];
 873         // if texture is mapped the wrong way (counterclockwise), the tangents
 874         // have to be flipped, this is detected by calculating a normal from the
 875         // two tangents, and seeing if it is opposite the surface normal
 876         // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 877         CrossProduct(tvector3f, svector3f, tangentcross);
 878         if (DotProduct(tangentcross, normal3f) < 0)
 879         {
 880                 VectorNegate(svector3f, svector3f);
 881                 VectorNegate(tvector3f, tvector3f);
 882         }
 883 }
 884
 885 // warning: this is a very expensive function!
 886 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)
 887 {
 888         int i, tnum;
 889         float sdir[3], tdir[3], normal[3], *sv, *tv;
 890         const float *v0, *v1, *v2, *tc0, *tc1, *tc2, *n;
 891         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 892         const int *e;
 893         // clear the vectors
 894         memset(svector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 895         memset(tvector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 896         // process each vertex of each triangle and accumulate the results
 897         for (tnum = 0, e = elements;tnum < numtriangles;tnum++, e += 3)
 898         {
 899                 v0 = vertex3f + e[0] * 3;
 900                 v1 = vertex3f + e[1] * 3;
 901                 v2 = vertex3f + e[2] * 3;
 902                 tc0 = texcoord2f + e[0] * 2;
 903                 tc1 = texcoord2f + e[1] * 2;
 904                 tc2 = texcoord2f + e[2] * 2;
 905
 906                 // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 907                 // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 908
 909                 // calculate the edge directions and surface normal
 910                 // 6 multiply, 9 subtract
 911                 VectorSubtract(v1, v0, v10);
 912                 VectorSubtract(v2, v0, v20);
 913                 normal[0] = v20[1] * v10[2] - v20[2] * v10[1];
 914                 normal[1] = v20[2] * v10[0] - v20[0] * v10[2];
 915                 normal[2] = v20[0] * v10[1] - v20[1] * v10[0];
 916
 917                 // calculate the tangents
 918                 // 12 multiply, 10 subtract
 919                 tc10[1] = tc1[1] - tc0[1];
 920                 tc20[1] = tc2[1] - tc0[1];
 921                 sdir[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 922                 sdir[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 923                 sdir[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 924                 tc10[0] = tc1[0] - tc0[0];
 925                 tc20[0] = tc2[0] - tc0[0];
 926                 tdir[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 927                 tdir[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 928                 tdir[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 929
 930                 // if texture is mapped the wrong way (counterclockwise), the tangents
 931                 // have to be flipped, this is detected by calculating a normal from the
 932                 // two tangents, and seeing if it is opposite the surface normal
 933                 // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 934                 CrossProduct(tdir, sdir, tangentcross);
 935                 if (DotProduct(tangentcross, normal) < 0)
 936                 {
 937                         VectorNegate(sdir, sdir);
 938                         VectorNegate(tdir, tdir);
 939                 }
 940
 941                 if (!areaweighting)
 942                 {
 943                         VectorNormalize(sdir);
 944                         VectorNormalize(tdir);
 945                 }
 946                 for (i = 0;i < 3;i++)
 947                 {
 948                         VectorAdd(svector3f + e[i]*3, sdir, svector3f + e[i]*3);
 949                         VectorAdd(tvector3f + e[i]*3, tdir, tvector3f + e[i]*3);
 950                 }
 951         }
 952         // make the tangents completely perpendicular to the surface normal, and
 953         // then normalize them
 954         // 16 assignments, 2 divide, 2 sqrt, 2 negates, 14 adds, 24 multiplies
 955         for (i = 0, sv = svector3f + 3 * firstvertex, tv = tvector3f + 3 * firstvertex, n = normal3f + 3 * firstvertex;i < numvertices;i++, sv += 3, tv += 3, n += 3)
 956         {
 957                 f = -DotProduct(sv, n);
 958                 VectorMA(sv, f, n, sv);
 959                 VectorNormalize(sv);
 960                 f = -DotProduct(tv, n);
 961                 VectorMA(tv, f, n, tv);
 962                 VectorNormalize(tv);
 963         }
 964 }
 965
 966 void Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriangles, qboolean lightmapoffsets, qboolean vertexcolors, qboolean neighbors)
 967 {
 968         unsigned char *data;
 969         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));
 970         loadmodel->surfmesh.num_vertices = numvertices;
 971         loadmodel->surfmesh.num_triangles = numtriangles;
 972         if (loadmodel->surfmesh.num_vertices)
 973         {
 974                 loadmodel->surfmesh.data_vertex3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 975                 loadmodel->surfmesh.data_svector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 976                 loadmodel->surfmesh.data_tvector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 977                 loadmodel->surfmesh.data_normal3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 978                 loadmodel->surfmesh.data_texcoordtexture2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 979                 loadmodel->surfmesh.data_texcoordlightmap2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 980                 if (vertexcolors)
 981                         loadmodel->surfmesh.data_lightmapcolor4f = (float *)data, data += sizeof(float[4]) * loadmodel->surfmesh.num_vertices;
 982                 if (lightmapoffsets)
 983                         loadmodel->surfmesh.data_lightmapoffsets = (int *)data, data += sizeof(int) * loadmodel->surfmesh.num_vertices;
 984         }
 985         if (loadmodel->surfmesh.num_triangles)
 986         {
 987                 loadmodel->surfmesh.data_element3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 988                 if (neighbors)
 989                         loadmodel->surfmesh.data_neighbor3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 990                 if (loadmodel->surfmesh.num_vertices <= 65536)
 991                         loadmodel->surfmesh.data_element3s = (unsigned short *)data, data += sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles;
 992         }
 993 }
 994
 995 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)
 996 {
 997         shadowmesh_t *newmesh;
 998         unsigned char *data;
 999         int size;
1000         size = sizeof(shadowmesh_t);
1001         size += maxverts * sizeof(float[3]);
1002         if (light)
1003                 size += maxverts * sizeof(float[11]);
1004         size += maxtriangles * sizeof(int[3]);
1005         if (maxverts <= 65536)
1006                 size += maxtriangles * sizeof(unsigned short[3]);
1007         if (neighbors)
1008                 size += maxtriangles * sizeof(int[3]);
1009         if (expandable)
1010                 size += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *) + maxverts * sizeof(shadowmeshvertexhash_t);
1011         data = (unsigned char *)Mem_Alloc(mempool, size);
1012         newmesh = (shadowmesh_t *)data;data += sizeof(*newmesh);
1013         newmesh->map_diffuse = map_diffuse;
1014         newmesh->map_specular = map_specular;
1015         newmesh->map_normal = map_normal;
1016         newmesh->maxverts = maxverts;
1017         newmesh->maxtriangles = maxtriangles;
1018         newmesh->numverts = 0;
1019         newmesh->numtriangles = 0;
1020         memset(newmesh->sideoffsets, 0, sizeof(newmesh->sideoffsets));
1021         memset(newmesh->sidetotals, 0, sizeof(newmesh->sidetotals));
1022
1023         newmesh->vertex3f = (float *)data;data += maxverts * sizeof(float[3]);
1024         if (light)
1025         {
1026                 newmesh->svector3f = (float *)data;data += maxverts * sizeof(float[3]);
1027                 newmesh->tvector3f = (float *)data;data += maxverts * sizeof(float[3]);
1028                 newmesh->normal3f = (float *)data;data += maxverts * sizeof(float[3]);
1029                 newmesh->texcoord2f = (float *)data;data += maxverts * sizeof(float[2]);
1030         }
1031         newmesh->element3i = (int *)data;data += maxtriangles * sizeof(int[3]);
1032         if (neighbors)
1033         {
1034                 newmesh->neighbor3i = (int *)data;data += maxtriangles * sizeof(int[3]);
1035         }
1036         if (expandable)
1037         {
1038                 newmesh->vertexhashtable = (shadowmeshvertexhash_t **)data;data += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *);
1039                 newmesh->vertexhashentries = (shadowmeshvertexhash_t *)data;data += maxverts * sizeof(shadowmeshvertexhash_t);
1040         }
1041         if (maxverts <= 65536)
1042                 newmesh->element3s = (unsigned short *)data;data += maxtriangles * sizeof(unsigned short[3]);
1043         return newmesh;
1044 }
1045
1046 shadowmesh_t *Mod_ShadowMesh_ReAlloc(mempool_t *mempool, shadowmesh_t *oldmesh, int light, int neighbors)
1047 {
1048         shadowmesh_t *newmesh;
1049         newmesh = Mod_ShadowMesh_Alloc(mempool, oldmesh->numverts, oldmesh->numtriangles, oldmesh->map_diffuse, oldmesh->map_specular, oldmesh->map_normal, light, neighbors, false);
1050         newmesh->numverts = oldmesh->numverts;
1051         newmesh->numtriangles = oldmesh->numtriangles;
1052         memcpy(newmesh->sideoffsets, oldmesh->sideoffsets, sizeof(oldmesh->sideoffsets));
1053         memcpy(newmesh->sidetotals, oldmesh->sidetotals, sizeof(oldmesh->sidetotals));
1054
1055         memcpy(newmesh->vertex3f, oldmesh->vertex3f, oldmesh->numverts * sizeof(float[3]));
1056         if (newmesh->svector3f && oldmesh->svector3f)
1057         {
1058                 memcpy(newmesh->svector3f, oldmesh->svector3f, oldmesh->numverts * sizeof(float[3]));
1059                 memcpy(newmesh->tvector3f, oldmesh->tvector3f, oldmesh->numverts * sizeof(float[3]));
1060                 memcpy(newmesh->normal3f, oldmesh->normal3f, oldmesh->numverts * sizeof(float[3]));
1061                 memcpy(newmesh->texcoord2f, oldmesh->texcoord2f, oldmesh->numverts * sizeof(float[2]));
1062         }
1063         memcpy(newmesh->element3i, oldmesh->element3i, oldmesh->numtriangles * sizeof(int[3]));
1064         if (newmesh->neighbor3i && oldmesh->neighbor3i)
1065                 memcpy(newmesh->neighbor3i, oldmesh->neighbor3i, oldmesh->numtriangles * sizeof(int[3]));
1066         return newmesh;
1067 }
1068
1069 int Mod_ShadowMesh_AddVertex(shadowmesh_t *mesh, float *vertex14f)
1070 {
1071         int hashindex, vnum;
1072         shadowmeshvertexhash_t *hash;
1073         // this uses prime numbers intentionally
1074         hashindex = (unsigned int) (vertex14f[0] * 2003 + vertex14f[1] * 4001 + vertex14f[2] * 7919) % SHADOWMESHVERTEXHASH;
1075         for (hash = mesh->vertexhashtable[hashindex];hash;hash = hash->next)
1076         {
1077                 vnum = (hash - mesh->vertexhashentries);
1078                 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]))
1079                  && (mesh->svector3f == NULL || (mesh->svector3f[vnum * 3 + 0] == vertex14f[3] && mesh->svector3f[vnum * 3 + 1] == vertex14f[4] && mesh->svector3f[vnum * 3 + 2] == vertex14f[5]))
1080                  && (mesh->tvector3f == NULL || (mesh->tvector3f[vnum * 3 + 0] == vertex14f[6] && mesh->tvector3f[vnum * 3 + 1] == vertex14f[7] && mesh->tvector3f[vnum * 3 + 2] == vertex14f[8]))
1081                  && (mesh->normal3f == NULL || (mesh->normal3f[vnum * 3 + 0] == vertex14f[9] && mesh->normal3f[vnum * 3 + 1] == vertex14f[10] && mesh->normal3f[vnum * 3 + 2] == vertex14f[11]))
1082                  && (mesh->texcoord2f == NULL || (mesh->texcoord2f[vnum * 2 + 0] == vertex14f[12] && mesh->texcoord2f[vnum * 2 + 1] == vertex14f[13])))
1083                         return hash - mesh->vertexhashentries;
1084         }
1085         vnum = mesh->numverts++;
1086         hash = mesh->vertexhashentries + vnum;
1087         hash->next = mesh->vertexhashtable[hashindex];
1088         mesh->vertexhashtable[hashindex] = hash;
1089         if (mesh->vertex3f) {mesh->vertex3f[vnum * 3 + 0] = vertex14f[0];mesh->vertex3f[vnum * 3 + 1] = vertex14f[1];mesh->vertex3f[vnum * 3 + 2] = vertex14f[2];}
1090         if (mesh->svector3f) {mesh->svector3f[vnum * 3 + 0] = vertex14f[3];mesh->svector3f[vnum * 3 + 1] = vertex14f[4];mesh->svector3f[vnum * 3 + 2] = vertex14f[5];}
1091         if (mesh->tvector3f) {mesh->tvector3f[vnum * 3 + 0] = vertex14f[6];mesh->tvector3f[vnum * 3 + 1] = vertex14f[7];mesh->tvector3f[vnum * 3 + 2] = vertex14f[8];}
1092         if (mesh->normal3f) {mesh->normal3f[vnum * 3 + 0] = vertex14f[9];mesh->normal3f[vnum * 3 + 1] = vertex14f[10];mesh->normal3f[vnum * 3 + 2] = vertex14f[11];}
1093         if (mesh->texcoord2f) {mesh->texcoord2f[vnum * 2 + 0] = vertex14f[12];mesh->texcoord2f[vnum * 2 + 1] = vertex14f[13];}
1094         return vnum;
1095 }
1096
1097 void Mod_ShadowMesh_AddTriangle(mempool_t *mempool, shadowmesh_t *mesh, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, float *vertex14f)
1098 {
1099         if (mesh->numtriangles == 0)
1100         {
1101                 // set the properties on this empty mesh to be more favorable...
1102                 // (note: this case only occurs for the first triangle added to a new mesh chain)
1103                 mesh->map_diffuse = map_diffuse;
1104                 mesh->map_specular = map_specular;
1105                 mesh->map_normal = map_normal;
1106         }
1107         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)
1108         {
1109                 if (mesh->next == NULL)
1110                         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);
1111                 mesh = mesh->next;
1112         }
1113         mesh->element3i[mesh->numtriangles * 3 + 0] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 0);
1114         mesh->element3i[mesh->numtriangles * 3 + 1] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 1);
1115         mesh->element3i[mesh->numtriangles * 3 + 2] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 2);
1116         mesh->numtriangles++;
1117 }
1118
1119 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)
1120 {
1121         int i, j, e;
1122         float vbuf[3*14], *v;
1123         memset(vbuf, 0, sizeof(vbuf));
1124         for (i = 0;i < numtris;i++)
1125         {
1126                 for (j = 0, v = vbuf;j < 3;j++, v += 14)
1127                 {
1128                         e = *element3i++;
1129                         if (vertex3f)
1130                         {
1131                                 v[0] = vertex3f[e * 3 + 0];
1132                                 v[1] = vertex3f[e * 3 + 1];
1133                                 v[2] = vertex3f[e * 3 + 2];
1134                         }
1135                         if (svector3f)
1136                         {
1137                                 v[3] = svector3f[e * 3 + 0];
1138                                 v[4] = svector3f[e * 3 + 1];
1139                                 v[5] = svector3f[e * 3 + 2];
1140                         }
1141                         if (tvector3f)
1142                         {
1143                                 v[6] = tvector3f[e * 3 + 0];
1144                                 v[7] = tvector3f[e * 3 + 1];
1145                                 v[8] = tvector3f[e * 3 + 2];
1146                         }
1147                         if (normal3f)
1148                         {
1149                                 v[9] = normal3f[e * 3 + 0];
1150                                 v[10] = normal3f[e * 3 + 1];
1151                                 v[11] = normal3f[e * 3 + 2];
1152                         }
1153                         if (texcoord2f)
1154                         {
1155                                 v[12] = texcoord2f[e * 2 + 0];
1156                                 v[13] = texcoord2f[e * 2 + 1];
1157                         }
1158                 }
1159                 Mod_ShadowMesh_AddTriangle(mempool, mesh, map_diffuse, map_specular, map_normal, vbuf);
1160         }
1161
1162         // the triangle calculation can take a while, so let's do a keepalive here
1163         CL_KeepaliveMessage(false);
1164 }
1165
1166 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)
1167 {
1168         // the preparation before shadow mesh initialization can take a while, so let's do a keepalive here
1169         CL_KeepaliveMessage(false);
1170
1171         return Mod_ShadowMesh_Alloc(mempool, maxverts, maxtriangles, map_diffuse, map_specular, map_normal, light, neighbors, expandable);
1172 }
1173
1174 static void Mod_ShadowMesh_CreateVBOs(shadowmesh_t *mesh)
1175 {
1176         if (!vid.support.arb_vertex_buffer_object)
1177                 return;
1178         if (mesh->vbo)
1179                 return;
1180
1181         // element buffer is easy because it's just one array
1182         if (mesh->numtriangles)
1183         {
1184                 if (mesh->element3s)
1185                         mesh->ebo3s = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, mesh->element3s, mesh->numtriangles * sizeof(unsigned short[3]), "shadowmesh");
1186                 else
1187                         mesh->ebo3i = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, mesh->element3i, mesh->numtriangles * sizeof(unsigned int[3]), "shadowmesh");
1188         }
1189
1190         // vertex buffer is several arrays and we put them in the same buffer
1191         //
1192         // is this wise?  the texcoordtexture2f array is used with dynamic
1193         // vertex/svector/tvector/normal when rendering animated models, on the
1194         // other hand animated models don't use a lot of vertices anyway...
1195         if (mesh->numverts)
1196         {
1197                 size_t size;
1198                 unsigned char *mem;
1199                 size = 0;
1200                 mesh->vbooffset_vertex3f           = size;if (mesh->vertex3f          ) size += mesh->numverts * sizeof(float[3]);
1201                 mesh->vbooffset_svector3f          = size;if (mesh->svector3f         ) size += mesh->numverts * sizeof(float[3]);
1202                 mesh->vbooffset_tvector3f          = size;if (mesh->tvector3f         ) size += mesh->numverts * sizeof(float[3]);
1203                 mesh->vbooffset_normal3f           = size;if (mesh->normal3f          ) size += mesh->numverts * sizeof(float[3]);
1204                 mesh->vbooffset_texcoord2f         = size;if (mesh->texcoord2f        ) size += mesh->numverts * sizeof(float[2]);
1205                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
1206                 if (mesh->vertex3f          ) memcpy(mem + mesh->vbooffset_vertex3f          , mesh->vertex3f          , mesh->numverts * sizeof(float[3]));
1207                 if (mesh->svector3f         ) memcpy(mem + mesh->vbooffset_svector3f         , mesh->svector3f         , mesh->numverts * sizeof(float[3]));
1208                 if (mesh->tvector3f         ) memcpy(mem + mesh->vbooffset_tvector3f         , mesh->tvector3f         , mesh->numverts * sizeof(float[3]));
1209                 if (mesh->normal3f          ) memcpy(mem + mesh->vbooffset_normal3f          , mesh->normal3f          , mesh->numverts * sizeof(float[3]));
1210                 if (mesh->texcoord2f        ) memcpy(mem + mesh->vbooffset_texcoord2f        , mesh->texcoord2f        , mesh->numverts * sizeof(float[2]));
1211                 mesh->vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, "shadowmesh");
1212                 Mem_Free(mem);
1213         }
1214 }
1215
1216 shadowmesh_t *Mod_ShadowMesh_Finish(mempool_t *mempool, shadowmesh_t *firstmesh, qboolean light, qboolean neighbors, qboolean createvbo)
1217 {
1218         shadowmesh_t *mesh, *newmesh, *nextmesh;
1219         // reallocate meshs to conserve space
1220         for (mesh = firstmesh, firstmesh = NULL;mesh;mesh = nextmesh)
1221         {
1222                 nextmesh = mesh->next;
1223                 if (mesh->numverts >= 3 && mesh->numtriangles >= 1)
1224                 {
1225                         newmesh = Mod_ShadowMesh_ReAlloc(mempool, mesh, light, neighbors);
1226                         newmesh->next = firstmesh;
1227                         firstmesh = newmesh;
1228                         if (newmesh->element3s)
1229                         {
1230                                 int i;
1231                                 for (i = 0;i < newmesh->numtriangles*3;i++)
1232                                         newmesh->element3s[i] = newmesh->element3i[i];
1233                         }
1234                         if (createvbo)
1235                                 Mod_ShadowMesh_CreateVBOs(newmesh);
1236                 }
1237                 Mem_Free(mesh);
1238         }
1239
1240         // this can take a while, so let's do a keepalive here
1241         CL_KeepaliveMessage(false);
1242
1243         return firstmesh;
1244 }
1245
1246 void Mod_ShadowMesh_CalcBBox(shadowmesh_t *firstmesh, vec3_t mins, vec3_t maxs, vec3_t center, float *radius)
1247 {
1248         int i;
1249         shadowmesh_t *mesh;
1250         vec3_t nmins, nmaxs, ncenter, temp;
1251         float nradius2, dist2, *v;
1252         VectorClear(nmins);
1253         VectorClear(nmaxs);
1254         // calculate bbox
1255         for (mesh = firstmesh;mesh;mesh = mesh->next)
1256         {
1257                 if (mesh == firstmesh)
1258                 {
1259                         VectorCopy(mesh->vertex3f, nmins);
1260                         VectorCopy(mesh->vertex3f, nmaxs);
1261                 }
1262                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1263                 {
1264                         if (nmins[0] > v[0]) nmins[0] = v[0];if (nmaxs[0] < v[0]) nmaxs[0] = v[0];
1265                         if (nmins[1] > v[1]) nmins[1] = v[1];if (nmaxs[1] < v[1]) nmaxs[1] = v[1];
1266                         if (nmins[2] > v[2]) nmins[2] = v[2];if (nmaxs[2] < v[2]) nmaxs[2] = v[2];
1267                 }
1268         }
1269         // calculate center and radius
1270         ncenter[0] = (nmins[0] + nmaxs[0]) * 0.5f;
1271         ncenter[1] = (nmins[1] + nmaxs[1]) * 0.5f;
1272         ncenter[2] = (nmins[2] + nmaxs[2]) * 0.5f;
1273         nradius2 = 0;
1274         for (mesh = firstmesh;mesh;mesh = mesh->next)
1275         {
1276                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1277                 {
1278                         VectorSubtract(v, ncenter, temp);
1279                         dist2 = DotProduct(temp, temp);
1280                         if (nradius2 < dist2)
1281                                 nradius2 = dist2;
1282                 }
1283         }
1284         // return data
1285         if (mins)
1286                 VectorCopy(nmins, mins);
1287         if (maxs)
1288                 VectorCopy(nmaxs, maxs);
1289         if (center)
1290                 VectorCopy(ncenter, center);
1291         if (radius)
1292                 *radius = sqrt(nradius2);
1293 }
1294
1295 void Mod_ShadowMesh_Free(shadowmesh_t *mesh)
1296 {
1297         shadowmesh_t *nextmesh;
1298         for (;mesh;mesh = nextmesh)
1299         {
1300                 if (mesh->ebo3i)
1301                         R_Mesh_DestroyBufferObject(mesh->ebo3i);
1302                 if (mesh->ebo3s)
1303                         R_Mesh_DestroyBufferObject(mesh->ebo3s);
1304                 if (mesh->vbo)
1305                         R_Mesh_DestroyBufferObject(mesh->vbo);
1306                 nextmesh = mesh->next;
1307                 Mem_Free(mesh);
1308         }
1309 }
1310
1311 void Mod_CreateCollisionMesh(dp_model_t *mod)
1312 {
1313         int k;
1314         int numcollisionmeshtriangles;
1315         const msurface_t *surface;
1316         mempool_t *mempool = mod->mempool;
1317         if (!mempool && mod->brush.parentmodel)
1318                 mempool = mod->brush.parentmodel->mempool;
1319         // make a single combined collision mesh for physics engine use
1320         // TODO rewrite this to use the collision brushes as source, to fix issues with e.g. common/caulk which creates no drawsurface
1321         numcollisionmeshtriangles = 0;
1322         for (k = 0;k < mod->nummodelsurfaces;k++)
1323         {
1324                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1325                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1326                         continue;
1327                 numcollisionmeshtriangles += surface->num_triangles;
1328         }
1329         mod->brush.collisionmesh = Mod_ShadowMesh_Begin(mempool, numcollisionmeshtriangles * 3, numcollisionmeshtriangles, NULL, NULL, NULL, false, false, true);
1330         for (k = 0;k < mod->nummodelsurfaces;k++)
1331         {
1332                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1333                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1334                         continue;
1335                 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));
1336         }
1337         mod->brush.collisionmesh = Mod_ShadowMesh_Finish(mempool, mod->brush.collisionmesh, false, true, false);
1338 }
1339
1340 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)
1341 {
1342         float v[3], tc[3];
1343         v[0] = ix;
1344         v[1] = iy;
1345         if (ix >= 0 && iy >= 0 && ix < imagewidth && iy < imageheight)
1346                 v[2] = (imagepixels[((iy*imagewidth)+ix)*4+0] + imagepixels[((iy*imagewidth)+ix)*4+1] + imagepixels[((iy*imagewidth)+ix)*4+2]) * (1.0f / 765.0f);
1347         else
1348                 v[2] = 0;
1349         Matrix4x4_Transform(pixelstepmatrix, v, vertex3f);
1350         Matrix4x4_Transform(pixeltexturestepmatrix, v, tc);
1351         texcoord2f[0] = tc[0];
1352         texcoord2f[1] = tc[1];
1353 }
1354
1355 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)
1356 {
1357         float vup[3], vdown[3], vleft[3], vright[3];
1358         float tcup[3], tcdown[3], tcleft[3], tcright[3];
1359         float sv[3], tv[3], nl[3];
1360         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, pixelstepmatrix, pixeltexturestepmatrix);
1361         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy - 1, vup, tcup, pixelstepmatrix, pixeltexturestepmatrix);
1362         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy + 1, vdown, tcdown, pixelstepmatrix, pixeltexturestepmatrix);
1363         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix - 1, iy, vleft, tcleft, pixelstepmatrix, pixeltexturestepmatrix);
1364         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix + 1, iy, vright, tcright, pixelstepmatrix, pixeltexturestepmatrix);
1365         Mod_BuildBumpVectors(vertex3f, vup, vright, texcoord2f, tcup, tcright, svector3f, tvector3f, normal3f);
1366         Mod_BuildBumpVectors(vertex3f, vright, vdown, texcoord2f, tcright, tcdown, sv, tv, nl);
1367         VectorAdd(svector3f, sv, svector3f);
1368         VectorAdd(tvector3f, tv, tvector3f);
1369         VectorAdd(normal3f, nl, normal3f);
1370         Mod_BuildBumpVectors(vertex3f, vdown, vleft, texcoord2f, tcdown, tcleft, sv, tv, nl);
1371         VectorAdd(svector3f, sv, svector3f);
1372         VectorAdd(tvector3f, tv, tvector3f);
1373         VectorAdd(normal3f, nl, normal3f);
1374         Mod_BuildBumpVectors(vertex3f, vleft, vup, texcoord2f, tcleft, tcup, sv, tv, nl);
1375         VectorAdd(svector3f, sv, svector3f);
1376         VectorAdd(tvector3f, tv, tvector3f);
1377         VectorAdd(normal3f, nl, normal3f);
1378 }
1379
1380 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)
1381 {
1382         int x, y, ix, iy, *e;
1383         e = element3i;
1384         for (y = 0;y < height;y++)
1385         {
1386                 for (x = 0;x < width;x++)
1387                 {
1388                         e[0] = (y + 1) * (width + 1) + (x + 0);
1389                         e[1] = (y + 0) * (width + 1) + (x + 0);
1390                         e[2] = (y + 1) * (width + 1) + (x + 1);
1391                         e[3] = (y + 0) * (width + 1) + (x + 0);
1392                         e[4] = (y + 0) * (width + 1) + (x + 1);
1393                         e[5] = (y + 1) * (width + 1) + (x + 1);
1394                         e += 6;
1395                 }
1396         }
1397         Mod_BuildTriangleNeighbors(neighbor3i, element3i, width*height*2);
1398         for (y = 0, iy = y1;y < height + 1;y++, iy++)
1399                 for (x = 0, ix = x1;x < width + 1;x++, ix++, vertex3f += 3, texcoord2f += 2, svector3f += 3, tvector3f += 3, normal3f += 3)
1400                         Mod_GetTerrainVertexFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, svector3f, tvector3f, normal3f, pixelstepmatrix, pixeltexturestepmatrix);
1401 }
1402
1403 #if 0
1404 void Mod_Terrain_SurfaceRecurseChunk(dp_model_t *model, int stepsize, int x, int y)
1405 {
1406         float mins[3];
1407         float maxs[3];
1408         float chunkwidth = min(stepsize, model->terrain.width - 1 - x);
1409         float chunkheight = min(stepsize, model->terrain.height - 1 - y);
1410         float viewvector[3];
1411         unsigned int firstvertex;
1412         unsigned int *e;
1413         float *v;
1414         if (chunkwidth < 2 || chunkheight < 2)
1415                 return;
1416         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]);
1417         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]);
1418         viewvector[0] = bound(mins[0], localvieworigin, maxs[0]) - model->terrain.vieworigin[0];
1419         viewvector[1] = bound(mins[1], localvieworigin, maxs[1]) - model->terrain.vieworigin[1];
1420         viewvector[2] = bound(mins[2], localvieworigin, maxs[2]) - model->terrain.vieworigin[2];
1421         if (stepsize > 1 && VectorLength(viewvector) < stepsize*model->terrain.scale[0]*r_terrain_lodscale.value)
1422         {
1423                 // too close for this stepsize, emit as 4 chunks instead
1424                 stepsize /= 2;
1425                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y);
1426                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y);
1427                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y+stepsize);
1428                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y+stepsize);
1429                 return;
1430         }
1431         // emit the geometry at stepsize into our vertex buffer / index buffer
1432         // we add two columns and two rows for skirt
1433         outwidth = chunkwidth+2;
1434         outheight = chunkheight+2;
1435         outwidth2 = outwidth-1;
1436         outheight2 = outheight-1;
1437         outwidth3 = outwidth+1;
1438         outheight3 = outheight+1;
1439         firstvertex = numvertices;
1440         e = model->terrain.element3i + numtriangles;
1441         numtriangles += chunkwidth*chunkheight*2+chunkwidth*2*2+chunkheight*2*2;
1442         v = model->terrain.vertex3f + numvertices;
1443         numvertices += (chunkwidth+1)*(chunkheight+1)+(chunkwidth+1)*2+(chunkheight+1)*2;
1444         // emit the triangles (note: the skirt is treated as two extra rows and two extra columns)
1445         for (ty = 0;ty < outheight;ty++)
1446         {
1447                 for (tx = 0;tx < outwidth;tx++)
1448                 {
1449                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1450                         *e++ = firstvertex + (ty  )*outwidth3+(tx+1);
1451                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1452                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1453                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1454                         *e++ = firstvertex + (ty+1)*outwidth3+(tx  );
1455                 }
1456         }
1457         // TODO: emit surface vertices (x+tx*stepsize, y+ty*stepsize)
1458         for (ty = 0;ty <= outheight;ty++)
1459         {
1460                 skirtrow = ty == 0 || ty == outheight;
1461                 ry = y+bound(1, ty, outheight)*stepsize;
1462                 for (tx = 0;tx <= outwidth;tx++)
1463                 {
1464                         skirt = skirtrow || tx == 0 || tx == outwidth;
1465                         rx = x+bound(1, tx, outwidth)*stepsize;
1466                         v[0] = rx*scale[0];
1467                         v[1] = ry*scale[1];
1468                         v[2] = heightmap[ry*terrainwidth+rx]*scale[2];
1469                         v += 3;
1470                 }
1471         }
1472         // TODO: emit skirt vertices
1473 }
1474
1475 void Mod_Terrain_UpdateSurfacesForViewOrigin(dp_model_t *model)
1476 {
1477         for (y = 0;y < model->terrain.size[1];y += model->terrain.
1478         Mod_Terrain_SurfaceRecurseChunk(model, model->terrain.maxstepsize, x, y);
1479         Mod_Terrain_BuildChunk(model,
1480 }
1481 #endif
1482
1483 q3wavefunc_t Mod_LoadQ3Shaders_EnumerateWaveFunc(const char *s)
1484 {
1485         if (!strcasecmp(s, "sin"))             return Q3WAVEFUNC_SIN;
1486         if (!strcasecmp(s, "square"))          return Q3WAVEFUNC_SQUARE;
1487         if (!strcasecmp(s, "triangle"))        return Q3WAVEFUNC_TRIANGLE;
1488         if (!strcasecmp(s, "sawtooth"))        return Q3WAVEFUNC_SAWTOOTH;
1489         if (!strcasecmp(s, "inversesawtooth")) return Q3WAVEFUNC_INVERSESAWTOOTH;
1490         if (!strcasecmp(s, "noise"))           return Q3WAVEFUNC_NOISE;
1491         Con_DPrintf("Mod_LoadQ3Shaders: unknown wavefunc %s\n", s);
1492         return Q3WAVEFUNC_NONE;
1493 }
1494
1495 void Mod_FreeQ3Shaders(void)
1496 {
1497         Mem_FreePool(&q3shaders_mem);
1498 }
1499
1500 static void Q3Shader_AddToHash (q3shaderinfo_t* shader)
1501 {
1502         unsigned short hash = CRC_Block_CaseInsensitive ((const unsigned char *)shader->name, strlen (shader->name));
1503         q3shader_hash_entry_t* entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
1504         q3shader_hash_entry_t* lastEntry = NULL;
1505         while (entry != NULL)
1506         {
1507                 if (strcasecmp (entry->shader.name, shader->name) == 0)
1508                 {
1509                         unsigned char *start, *end, *start2;
1510                         start = (unsigned char *) (&shader->Q3SHADERINFO_COMPARE_START);
1511                         end = ((unsigned char *) (&shader->Q3SHADERINFO_COMPARE_END)) + sizeof(shader->Q3SHADERINFO_COMPARE_END);
1512                         start2 = (unsigned char *) (&entry->shader.Q3SHADERINFO_COMPARE_START);
1513                         if(memcmp(start, start2, end - start))
1514                                 Con_DPrintf("Shader '%s' already defined, ignoring mismatching redeclaration\n", shader->name);
1515                         else
1516                                 Con_DPrintf("Shader '%s' already defined\n", shader->name);
1517                         return;
1518                 }
1519                 lastEntry = entry;
1520                 entry = entry->chain;
1521         }
1522         if (entry == NULL)
1523         {
1524                 if (lastEntry->shader.name[0] != 0)
1525                 {
1526                         /* Add to chain */
1527                         q3shader_hash_entry_t* newEntry = (q3shader_hash_entry_t*)
1528                           Mem_ExpandableArray_AllocRecord (&q3shader_data->hash_entries);
1529
1530                         while (lastEntry->chain != NULL) lastEntry = lastEntry->chain;
1531                         lastEntry->chain = newEntry;
1532                         newEntry->chain = NULL;
1533                         lastEntry = newEntry;
1534                 }
1535                 /* else: head of chain, in hash entry array */
1536                 entry = lastEntry;
1537         }
1538         memcpy (&entry->shader, shader, sizeof (q3shaderinfo_t));
1539 }
1540
1541 extern cvar_t r_picmipworld;
1542 void Mod_LoadQ3Shaders(void)
1543 {
1544         int j;
1545         int fileindex;
1546         fssearch_t *search;
1547         char *f;
1548         const char *text;
1549         q3shaderinfo_t shader;
1550         q3shaderinfo_layer_t *layer;
1551         int numparameters;
1552         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
1553
1554         Mod_FreeQ3Shaders();
1555
1556         q3shaders_mem = Mem_AllocPool("q3shaders", 0, NULL);
1557         q3shader_data = (q3shader_data_t*)Mem_Alloc (q3shaders_mem,
1558                 sizeof (q3shader_data_t));
1559         Mem_ExpandableArray_NewArray (&q3shader_data->hash_entries,
1560                 q3shaders_mem, sizeof (q3shader_hash_entry_t), 256);
1561         Mem_ExpandableArray_NewArray (&q3shader_data->char_ptrs,
1562                 q3shaders_mem, sizeof (char**), 256);
1563
1564         search = FS_Search("scripts/*.shader", true, false);
1565         if (!search)
1566                 return;
1567         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
1568         {
1569                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
1570                 if (!f)
1571                         continue;
1572                 while (COM_ParseToken_QuakeC(&text, false))
1573                 {
1574                         memset (&shader, 0, sizeof(shader));
1575                         shader.reflectmin = 0;
1576                         shader.reflectmax = 1;
1577                         shader.refractfactor = 1;
1578                         Vector4Set(shader.refractcolor4f, 1, 1, 1, 1);
1579                         shader.reflectfactor = 1;
1580                         Vector4Set(shader.reflectcolor4f, 1, 1, 1, 1);
1581                         shader.r_water_wateralpha = 1;
1582                         shader.specularscalemod = 1;
1583                         shader.specularpowermod = 1;
1584
1585                         strlcpy(shader.name, com_token, sizeof(shader.name));
1586                         if (!COM_ParseToken_QuakeC(&text, false) || strcasecmp(com_token, "{"))
1587                         {
1588                                 Con_DPrintf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
1589                                 break;
1590                         }
1591                         while (COM_ParseToken_QuakeC(&text, false))
1592                         {
1593                                 if (!strcasecmp(com_token, "}"))
1594                                         break;
1595                                 if (!strcasecmp(com_token, "{"))
1596                                 {
1597                                         static q3shaderinfo_layer_t dummy;
1598                                         if (shader.numlayers < Q3SHADER_MAXLAYERS)
1599                                         {
1600                                                 layer = shader.layers + shader.numlayers++;
1601                                         }
1602                                         else
1603                                         {
1604                                                 // parse and process it anyway, just don't store it (so a map $lightmap or such stuff still is found)
1605                                                 memset(&dummy, 0, sizeof(dummy));
1606                                                 layer = &dummy;
1607                                         }
1608                                         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1609                                         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1610                                         layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1611                                         layer->blendfunc[0] = GL_ONE;
1612                                         layer->blendfunc[1] = GL_ZERO;
1613                                         while (COM_ParseToken_QuakeC(&text, false))
1614                                         {
1615                                                 if (!strcasecmp(com_token, "}"))
1616                                                         break;
1617                                                 if (!strcasecmp(com_token, "\n"))
1618                                                         continue;
1619                                                 numparameters = 0;
1620                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1621                                                 {
1622                                                         if (j < TEXTURE_MAXFRAMES + 4)
1623                                                         {
1624                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1625                                                                 numparameters = j + 1;
1626                                                         }
1627                                                         if (!COM_ParseToken_QuakeC(&text, true))
1628                                                                 break;
1629                                                 }
1630                                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1631                                                 //      parameter[j][0] = 0;
1632                                                 if (developer_insane.integer)
1633                                                 {
1634                                                         Con_DPrintf("%s %i: ", shader.name, shader.numlayers - 1);
1635                                                         for (j = 0;j < numparameters;j++)
1636                                                                 Con_DPrintf(" %s", parameter[j]);
1637                                                         Con_DPrint("\n");
1638                                                 }
1639                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
1640                                                 {
1641                                                         if (numparameters == 2)
1642                                                         {
1643                                                                 if (!strcasecmp(parameter[1], "add"))
1644                                                                 {
1645                                                                         layer->blendfunc[0] = GL_ONE;
1646                                                                         layer->blendfunc[1] = GL_ONE;
1647                                                                 }
1648                                                                 else if (!strcasecmp(parameter[1], "filter"))
1649                                                                 {
1650                                                                         layer->blendfunc[0] = GL_DST_COLOR;
1651                                                                         layer->blendfunc[1] = GL_ZERO;
1652                                                                 }
1653                                                                 else if (!strcasecmp(parameter[1], "blend"))
1654                                                                 {
1655                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
1656                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
1657                                                                 }
1658                                                         }
1659                                                         else if (numparameters == 3)
1660                                                         {
1661                                                                 int k;
1662                                                                 for (k = 0;k < 2;k++)
1663                                                                 {
1664                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
1665                                                                                 layer->blendfunc[k] = GL_ONE;
1666                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
1667                                                                                 layer->blendfunc[k] = GL_ZERO;
1668                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
1669                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
1670                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
1671                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
1672                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
1673                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
1674                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
1675                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1676                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
1677                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
1678                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
1679                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
1680                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
1681                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
1682                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
1683                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1684                                                                         else
1685                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
1686                                                                 }
1687                                                         }
1688                                                 }
1689                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
1690                                                         layer->alphatest = true;
1691                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
1692                                                 {
1693                                                         if (!strcasecmp(parameter[0], "clampmap"))
1694                                                                 layer->clampmap = true;
1695                                                         layer->numframes = 1;
1696                                                         layer->framerate = 1;
1697                                                         layer->texturename = (char**)Mem_ExpandableArray_AllocRecord (
1698                                                                 &q3shader_data->char_ptrs);
1699                                                         layer->texturename[0] = Mem_strdup (q3shaders_mem, parameter[1]);
1700                                                         if (!strcasecmp(parameter[1], "$lightmap"))
1701                                                                 shader.lighting = true;
1702                                                 }
1703                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
1704                                                 {
1705                                                         int i;
1706                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
1707                                                         layer->framerate = atof(parameter[1]);
1708                                                         layer->texturename = (char **) Mem_Alloc (q3shaders_mem, sizeof (char*) * layer->numframes);
1709                                                         for (i = 0;i < layer->numframes;i++)
1710                                                                 layer->texturename[i] = Mem_strdup (q3shaders_mem, parameter[i + 2]);
1711                                                 }
1712                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen"))
1713                                                 {
1714                                                         int i;
1715                                                         for (i = 0;i < numparameters - 2 && i < Q3RGBGEN_MAXPARMS;i++)
1716                                                                 layer->rgbgen.parms[i] = atof(parameter[i+2]);
1717                                                              if (!strcasecmp(parameter[1], "identity"))         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1718                                                         else if (!strcasecmp(parameter[1], "const"))            layer->rgbgen.rgbgen = Q3RGBGEN_CONST;
1719                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->rgbgen.rgbgen = Q3RGBGEN_ENTITY;
1720                                                         else if (!strcasecmp(parameter[1], "exactvertex"))      layer->rgbgen.rgbgen = Q3RGBGEN_EXACTVERTEX;
1721                                                         else if (!strcasecmp(parameter[1], "identitylighting")) layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITYLIGHTING;
1722                                                         else if (!strcasecmp(parameter[1], "lightingdiffuse"))  layer->rgbgen.rgbgen = Q3RGBGEN_LIGHTINGDIFFUSE;
1723                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSENTITY;
1724                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSVERTEX;
1725                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->rgbgen.rgbgen = Q3RGBGEN_VERTEX;
1726                                                         else if (!strcasecmp(parameter[1], "wave"))
1727                                                         {
1728                                                                 layer->rgbgen.rgbgen = Q3RGBGEN_WAVE;
1729                                                                 layer->rgbgen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1730                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1731                                                                         layer->rgbgen.waveparms[i] = atof(parameter[i+3]);
1732                                                         }
1733                                                         else Con_DPrintf("%s parsing warning: unknown rgbgen %s\n", search->filenames[fileindex], parameter[1]);
1734                                                 }
1735                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen"))
1736                                                 {
1737                                                         int i;
1738                                                         for (i = 0;i < numparameters - 2 && i < Q3ALPHAGEN_MAXPARMS;i++)
1739                                                                 layer->alphagen.parms[i] = atof(parameter[i+2]);
1740                                                              if (!strcasecmp(parameter[1], "identity"))         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1741                                                         else if (!strcasecmp(parameter[1], "const"))            layer->alphagen.alphagen = Q3ALPHAGEN_CONST;
1742                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->alphagen.alphagen = Q3ALPHAGEN_ENTITY;
1743                                                         else if (!strcasecmp(parameter[1], "lightingspecular")) layer->alphagen.alphagen = Q3ALPHAGEN_LIGHTINGSPECULAR;
1744                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSENTITY;
1745                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSVERTEX;
1746                                                         else if (!strcasecmp(parameter[1], "portal"))           layer->alphagen.alphagen = Q3ALPHAGEN_PORTAL;
1747                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->alphagen.alphagen = Q3ALPHAGEN_VERTEX;
1748                                                         else if (!strcasecmp(parameter[1], "wave"))
1749                                                         {
1750                                                                 layer->alphagen.alphagen = Q3ALPHAGEN_WAVE;
1751                                                                 layer->alphagen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1752                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1753                                                                         layer->alphagen.waveparms[i] = atof(parameter[i+3]);
1754                                                         }
1755                                                         else Con_DPrintf("%s parsing warning: unknown alphagen %s\n", search->filenames[fileindex], parameter[1]);
1756                                                 }
1757                                                 else if (numparameters >= 2 && (!strcasecmp(parameter[0], "texgen") || !strcasecmp(parameter[0], "tcgen")))
1758                                                 {
1759                                                         int i;
1760                                                         // observed values: tcgen environment
1761                                                         // no other values have been observed in real shaders
1762                                                         for (i = 0;i < numparameters - 2 && i < Q3TCGEN_MAXPARMS;i++)
1763                                                                 layer->tcgen.parms[i] = atof(parameter[i+2]);
1764                                                              if (!strcasecmp(parameter[1], "base"))        layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1765                                                         else if (!strcasecmp(parameter[1], "texture"))     layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1766                                                         else if (!strcasecmp(parameter[1], "environment")) layer->tcgen.tcgen = Q3TCGEN_ENVIRONMENT;
1767                                                         else if (!strcasecmp(parameter[1], "lightmap"))    layer->tcgen.tcgen = Q3TCGEN_LIGHTMAP;
1768                                                         else if (!strcasecmp(parameter[1], "vector"))      layer->tcgen.tcgen = Q3TCGEN_VECTOR;
1769                                                         else Con_DPrintf("%s parsing warning: unknown tcgen mode %s\n", search->filenames[fileindex], parameter[1]);
1770                                                 }
1771                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "tcmod"))
1772                                                 {
1773                                                         int i, tcmodindex;
1774                                                         // observed values:
1775                                                         // tcmod rotate #
1776                                                         // tcmod scale # #
1777                                                         // tcmod scroll # #
1778                                                         // tcmod stretch sin # # # #
1779                                                         // tcmod stretch triangle # # # #
1780                                                         // tcmod transform # # # # # #
1781                                                         // tcmod turb # # # #
1782                                                         // tcmod turb sin # # # #  (this is bogus)
1783                                                         // no other values have been observed in real shaders
1784                                                         for (tcmodindex = 0;tcmodindex < Q3MAXTCMODS;tcmodindex++)
1785                                                                 if (!layer->tcmods[tcmodindex].tcmod)
1786                                                                         break;
1787                                                         if (tcmodindex < Q3MAXTCMODS)
1788                                                         {
1789                                                                 for (i = 0;i < numparameters - 2 && i < Q3TCMOD_MAXPARMS;i++)
1790                                                                         layer->tcmods[tcmodindex].parms[i] = atof(parameter[i+2]);
1791                                                                          if (!strcasecmp(parameter[1], "entitytranslate")) layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ENTITYTRANSLATE;
1792                                                                 else if (!strcasecmp(parameter[1], "rotate"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ROTATE;
1793                                                                 else if (!strcasecmp(parameter[1], "scale"))           layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCALE;
1794                                                                 else if (!strcasecmp(parameter[1], "scroll"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCROLL;
1795                                                                 else if (!strcasecmp(parameter[1], "page"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_PAGE;
1796                                                                 else if (!strcasecmp(parameter[1], "stretch"))
1797                                                                 {
1798                                                                         layer->tcmods[tcmodindex].tcmod = Q3TCMOD_STRETCH;
1799                                                                         layer->tcmods[tcmodindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1800                                                                         for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1801                                                                                 layer->tcmods[tcmodindex].waveparms[i] = atof(parameter[i+3]);
1802                                                                 }
1803                                                                 else if (!strcasecmp(parameter[1], "transform"))       layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TRANSFORM;
1804                                                                 else if (!strcasecmp(parameter[1], "turb"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TURBULENT;
1805                                                                 else Con_DPrintf("%s parsing warning: unknown tcmod mode %s\n", search->filenames[fileindex], parameter[1]);
1806                                                         }
1807                                                         else
1808                                                                 Con_DPrintf("%s parsing warning: too many tcmods on one layer\n", search->filenames[fileindex]);
1809                                                 }
1810                                                 // break out a level if it was a closing brace (not using the character here to not confuse vim)
1811                                                 if (!strcasecmp(com_token, "}"))
1812                                                         break;
1813                                         }
1814                                         if (layer->rgbgen.rgbgen == Q3RGBGEN_LIGHTINGDIFFUSE || layer->rgbgen.rgbgen == Q3RGBGEN_VERTEX)
1815                                                 shader.lighting = true;
1816                                         if (layer->alphagen.alphagen == Q3ALPHAGEN_VERTEX)
1817                                         {
1818                                                 if (layer == shader.layers + 0)
1819                                                 {
1820                                                         // vertex controlled transparency
1821                                                         shader.vertexalpha = true;
1822                                                 }
1823                                                 else
1824                                                 {
1825                                                         // multilayer terrain shader or similar
1826                                                         shader.textureblendalpha = true;
1827                                                 }
1828                                         }
1829                                         layer->texflags = TEXF_ALPHA;
1830                                         if (!(shader.surfaceparms & Q3SURFACEPARM_NOMIPMAPS))
1831                                                 layer->texflags |= TEXF_MIPMAP;
1832                                         if (!(shader.textureflags & Q3TEXTUREFLAG_NOPICMIP))
1833                                                 layer->texflags |= TEXF_PICMIP | TEXF_COMPRESS;
1834                                         if (layer->clampmap)
1835                                                 layer->texflags |= TEXF_CLAMP;
1836                                         continue;
1837                                 }
1838                                 numparameters = 0;
1839                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1840                                 {
1841                                         if (j < TEXTURE_MAXFRAMES + 4)
1842                                         {
1843                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1844                                                 numparameters = j + 1;
1845                                         }
1846                                         if (!COM_ParseToken_QuakeC(&text, true))
1847                                                 break;
1848                                 }
1849                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1850                                 //      parameter[j][0] = 0;
1851                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
1852                                         break;
1853                                 if (developer_insane.integer)
1854                                 {
1855                                         Con_DPrintf("%s: ", shader.name);
1856                                         for (j = 0;j < numparameters;j++)
1857                                                 Con_DPrintf(" %s", parameter[j]);
1858                                         Con_DPrint("\n");
1859                                 }
1860                                 if (numparameters < 1)
1861                                         continue;
1862                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
1863                                 {
1864                                         if (!strcasecmp(parameter[1], "alphashadow"))
1865                                                 shader.surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
1866                                         else if (!strcasecmp(parameter[1], "areaportal"))
1867                                                 shader.surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
1868                                         else if (!strcasecmp(parameter[1], "botclip"))
1869                                                 shader.surfaceparms |= Q3SURFACEPARM_BOTCLIP;
1870                                         else if (!strcasecmp(parameter[1], "clusterportal"))
1871                                                 shader.surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
1872                                         else if (!strcasecmp(parameter[1], "detail"))
1873                                                 shader.surfaceparms |= Q3SURFACEPARM_DETAIL;
1874                                         else if (!strcasecmp(parameter[1], "donotenter"))
1875                                                 shader.surfaceparms |= Q3SURFACEPARM_DONOTENTER;
1876                                         else if (!strcasecmp(parameter[1], "dust"))
1877                                                 shader.surfaceparms |= Q3SURFACEPARM_DUST;
1878                                         else if (!strcasecmp(parameter[1], "hint"))
1879                                                 shader.surfaceparms |= Q3SURFACEPARM_HINT;
1880                                         else if (!strcasecmp(parameter[1], "fog"))
1881                                                 shader.surfaceparms |= Q3SURFACEPARM_FOG;
1882                                         else if (!strcasecmp(parameter[1], "lava"))
1883                                                 shader.surfaceparms |= Q3SURFACEPARM_LAVA;
1884                                         else if (!strcasecmp(parameter[1], "lightfilter"))
1885                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
1886                                         else if (!strcasecmp(parameter[1], "lightgrid"))
1887                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
1888                                         else if (!strcasecmp(parameter[1], "metalsteps"))
1889                                                 shader.surfaceparms |= Q3SURFACEPARM_METALSTEPS;
1890                                         else if (!strcasecmp(parameter[1], "nodamage"))
1891                                                 shader.surfaceparms |= Q3SURFACEPARM_NODAMAGE;
1892                                         else if (!strcasecmp(parameter[1], "nodlight"))
1893                                                 shader.surfaceparms |= Q3SURFACEPARM_NODLIGHT;
1894                                         else if (!strcasecmp(parameter[1], "nodraw"))
1895                                                 shader.surfaceparms |= Q3SURFACEPARM_NODRAW;
1896                                         else if (!strcasecmp(parameter[1], "nodrop"))
1897                                                 shader.surfaceparms |= Q3SURFACEPARM_NODROP;
1898                                         else if (!strcasecmp(parameter[1], "noimpact"))
1899                                                 shader.surfaceparms |= Q3SURFACEPARM_NOIMPACT;
1900                                         else if (!strcasecmp(parameter[1], "nolightmap"))
1901                                                 shader.surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
1902                                         else if (!strcasecmp(parameter[1], "nomarks"))
1903                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMARKS;
1904                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
1905                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
1906                                         else if (!strcasecmp(parameter[1], "nonsolid"))
1907                                                 shader.surfaceparms |= Q3SURFACEPARM_NONSOLID;
1908                                         else if (!strcasecmp(parameter[1], "origin"))
1909                                                 shader.surfaceparms |= Q3SURFACEPARM_ORIGIN;
1910                                         else if (!strcasecmp(parameter[1], "playerclip"))
1911                                                 shader.surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
1912                                         else if (!strcasecmp(parameter[1], "sky"))
1913                                                 shader.surfaceparms |= Q3SURFACEPARM_SKY;
1914                                         else if (!strcasecmp(parameter[1], "slick"))
1915                                                 shader.surfaceparms |= Q3SURFACEPARM_SLICK;
1916                                         else if (!strcasecmp(parameter[1], "slime"))
1917                                                 shader.surfaceparms |= Q3SURFACEPARM_SLIME;
1918                                         else if (!strcasecmp(parameter[1], "structural"))
1919                                                 shader.surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
1920                                         else if (!strcasecmp(parameter[1], "trans"))
1921                                                 shader.surfaceparms |= Q3SURFACEPARM_TRANS;
1922                                         else if (!strcasecmp(parameter[1], "water"))
1923                                                 shader.surfaceparms |= Q3SURFACEPARM_WATER;
1924                                         else if (!strcasecmp(parameter[1], "pointlight"))
1925                                                 shader.surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
1926                                         else if (!strcasecmp(parameter[1], "antiportal"))
1927                                                 shader.surfaceparms |= Q3SURFACEPARM_ANTIPORTAL;
1928                                         else
1929                                                 Con_DPrintf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
1930                                 }
1931                                 else if (!strcasecmp(parameter[0], "dpshadow"))
1932                                         shader.dpshadow = true;
1933                                 else if (!strcasecmp(parameter[0], "dpnoshadow"))
1934                                         shader.dpnoshadow = true;
1935                                 else if (!strcasecmp(parameter[0], "dpreflectcube"))
1936                                         strlcpy(shader.dpreflectcube, parameter[1], sizeof(shader.dpreflectcube));
1937                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
1938                                 {
1939                                         // some q3 skies don't have the sky parm set
1940                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
1941                                         strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
1942                                 }
1943                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
1944                                 {
1945                                         // some q3 skies don't have the sky parm set
1946                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
1947                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
1948                                                 strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
1949                                 }
1950                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
1951                                 {
1952                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
1953                                                 shader.textureflags |= Q3TEXTUREFLAG_TWOSIDED;
1954                                 }
1955                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
1956                                         shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
1957                                 else if (!strcasecmp(parameter[0], "nopicmip"))
1958                                         shader.textureflags |= Q3TEXTUREFLAG_NOPICMIP;
1959                                 else if (!strcasecmp(parameter[0], "polygonoffset"))
1960                                         shader.textureflags |= Q3TEXTUREFLAG_POLYGONOFFSET;
1961                                 else if (!strcasecmp(parameter[0], "dp_refract") && numparameters >= 5)
1962                                 {
1963                                         shader.textureflags |= Q3TEXTUREFLAG_REFRACTION;
1964                                         shader.refractfactor = atof(parameter[1]);
1965                                         Vector4Set(shader.refractcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), 1);
1966                                 }
1967                                 else if (!strcasecmp(parameter[0], "dp_reflect") && numparameters >= 6)
1968                                 {
1969                                         shader.textureflags |= Q3TEXTUREFLAG_REFLECTION;
1970                                         shader.reflectfactor = atof(parameter[1]);
1971                                         Vector4Set(shader.reflectcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), atof(parameter[5]));
1972                                 }
1973                                 else if (!strcasecmp(parameter[0], "dp_water") && numparameters >= 12)
1974                                 {
1975                                         shader.textureflags |= Q3TEXTUREFLAG_WATERSHADER;
1976                                         shader.reflectmin = atof(parameter[1]);
1977                                         shader.reflectmax = atof(parameter[2]);
1978                                         shader.refractfactor = atof(parameter[3]);
1979                                         shader.reflectfactor = atof(parameter[4]);
1980                                         Vector4Set(shader.refractcolor4f, atof(parameter[5]), atof(parameter[6]), atof(parameter[7]), 1);
1981                                         Vector4Set(shader.reflectcolor4f, atof(parameter[8]), atof(parameter[9]), atof(parameter[10]), 1);
1982                                         shader.r_water_wateralpha = atof(parameter[11]);
1983                                 }
1984                                 else if (!strcasecmp(parameter[0], "dp_glossintensitymod") && numparameters >= 2)
1985                                 {
1986                                         shader.specularscalemod = atof(parameter[1]);
1987                                 }
1988                                 else if (!strcasecmp(parameter[0], "dp_glossexponentmod") && numparameters >= 2)
1989                                 {
1990                                         shader.specularpowermod = atof(parameter[1]);
1991                                 }
1992                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
1993                                 {
1994                                         int i, deformindex;
1995                                         for (deformindex = 0;deformindex < Q3MAXDEFORMS;deformindex++)
1996                                                 if (!shader.deforms[deformindex].deform)
1997                                                         break;
1998                                         if (deformindex < Q3MAXDEFORMS)
1999                                         {
2000                                                 for (i = 0;i < numparameters - 2 && i < Q3DEFORM_MAXPARMS;i++)
2001                                                         shader.deforms[deformindex].parms[i] = atof(parameter[i+2]);
2002                                                      if (!strcasecmp(parameter[1], "projectionshadow")) shader.deforms[deformindex].deform = Q3DEFORM_PROJECTIONSHADOW;
2003                                                 else if (!strcasecmp(parameter[1], "autosprite"      )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE;
2004                                                 else if (!strcasecmp(parameter[1], "autosprite2"     )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE2;
2005                                                 else if (!strcasecmp(parameter[1], "text0"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT0;
2006                                                 else if (!strcasecmp(parameter[1], "text1"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT1;
2007                                                 else if (!strcasecmp(parameter[1], "text2"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT2;
2008                                                 else if (!strcasecmp(parameter[1], "text3"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT3;
2009                                                 else if (!strcasecmp(parameter[1], "text4"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT4;
2010                                                 else if (!strcasecmp(parameter[1], "text5"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT5;
2011                                                 else if (!strcasecmp(parameter[1], "text6"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT6;
2012                                                 else if (!strcasecmp(parameter[1], "text7"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT7;
2013                                                 else if (!strcasecmp(parameter[1], "bulge"           )) shader.deforms[deformindex].deform = Q3DEFORM_BULGE;
2014                                                 else if (!strcasecmp(parameter[1], "normal"          )) shader.deforms[deformindex].deform = Q3DEFORM_NORMAL;
2015                                                 else if (!strcasecmp(parameter[1], "wave"            ))
2016                                                 {
2017                                                         shader.deforms[deformindex].deform = Q3DEFORM_WAVE;
2018                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[3]);
2019                                                         for (i = 0;i < numparameters - 4 && i < Q3WAVEPARMS;i++)
2020                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+4]);
2021                                                 }
2022                                                 else if (!strcasecmp(parameter[1], "move"            ))
2023                                                 {
2024                                                         shader.deforms[deformindex].deform = Q3DEFORM_MOVE;
2025                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[5]);
2026                                                         for (i = 0;i < numparameters - 6 && i < Q3WAVEPARMS;i++)
2027                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+6]);
2028                                                 }
2029                                         }
2030                                 }
2031                         }
2032                         // pick the primary layer to render with
2033                         if (shader.numlayers)
2034                         {
2035                                 shader.backgroundlayer = -1;
2036                                 shader.primarylayer = 0;
2037                                 // if lightmap comes first this is definitely an ordinary texture
2038                                 // if the first two layers have the correct blendfuncs and use vertex alpha, it is a blended terrain shader
2039                                 if ((shader.layers[shader.primarylayer].texturename != NULL)
2040                                   && !strcasecmp(shader.layers[shader.primarylayer].texturename[0], "$lightmap"))
2041                                 {
2042                                         shader.backgroundlayer = -1;
2043                                         shader.primarylayer = 1;
2044                                 }
2045                                 else if (shader.numlayers >= 2
2046                                 &&   shader.layers[1].alphagen.alphagen == Q3ALPHAGEN_VERTEX
2047                                 &&  (shader.layers[0].blendfunc[0] == GL_ONE       && shader.layers[0].blendfunc[1] == GL_ZERO                && !shader.layers[0].alphatest)
2048                                 && ((shader.layers[1].blendfunc[0] == GL_SRC_ALPHA && shader.layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
2049                                 ||  (shader.layers[1].blendfunc[0] == GL_ONE       && shader.layers[1].blendfunc[1] == GL_ZERO                &&  shader.layers[1].alphatest)))
2050                                 {
2051                                         // terrain blending or other effects
2052                                         shader.backgroundlayer = 0;
2053                                         shader.primarylayer = 1;
2054                                 }
2055                         }
2056                         // fix up multiple reflection types
2057                         if(shader.textureflags & Q3TEXTUREFLAG_WATERSHADER)
2058                                 shader.textureflags &= ~(Q3TEXTUREFLAG_REFRACTION | Q3TEXTUREFLAG_REFLECTION);
2059
2060                         Q3Shader_AddToHash (&shader);
2061                 }
2062                 Mem_Free(f);
2063         }
2064         FS_FreeSearch(search);
2065 }
2066
2067 q3shaderinfo_t *Mod_LookupQ3Shader(const char *name)
2068 {
2069         unsigned short hash;
2070         q3shader_hash_entry_t* entry;
2071         if (!q3shaders_mem)
2072                 Mod_LoadQ3Shaders();
2073         hash = CRC_Block_CaseInsensitive ((const unsigned char *)name, strlen (name));
2074         entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
2075         while (entry != NULL)
2076         {
2077                 if (strcasecmp (entry->shader.name, name) == 0)
2078                         return &entry->shader;
2079                 entry = entry->chain;
2080         }
2081         return NULL;
2082 }
2083
2084 qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qboolean warnmissing, qboolean fallback, int defaulttexflags)
2085 {
2086         int j;
2087         int texflagsmask;
2088         qboolean success = true;
2089         q3shaderinfo_t *shader;
2090         if (!name)
2091                 name = "";
2092         strlcpy(texture->name, name, sizeof(texture->name));
2093         shader = name[0] ? Mod_LookupQ3Shader(name) : NULL;
2094
2095         texflagsmask = ~0;
2096         if(!(defaulttexflags & TEXF_PICMIP))
2097                 texflagsmask &= ~TEXF_PICMIP;
2098         if(!(defaulttexflags & TEXF_COMPRESS))
2099                 texflagsmask &= ~TEXF_COMPRESS;
2100         texture->specularscalemod = 1; // unless later loaded from the shader
2101         texture->specularpowermod = 1; // unless later loaded from the shader
2102         // WHEN ADDING DEFAULTS HERE, REMEMBER TO SYNC TO SHADER LOADING ABOVE
2103         // HERE, AND Q1BSP LOADING
2104         // JUST GREP FOR "specularscalemod = 1".
2105
2106         if (shader)
2107         {
2108                 if (developer_loading.integer)
2109                         Con_Printf("%s: loaded shader for %s\n", loadmodel->name, name);
2110                 texture->surfaceparms = shader->surfaceparms;
2111
2112                 // allow disabling of picmip or compression by defaulttexflags
2113                 texture->textureflags = shader->textureflags & texflagsmask;
2114
2115                 if (shader->surfaceparms & Q3SURFACEPARM_SKY)
2116                 {
2117                         texture->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2118                         if (shader->skyboxname[0])
2119                         {
2120                                 // quake3 seems to append a _ to the skybox name, so this must do so as well
2121                                 dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
2122                         }
2123                 }
2124                 else if ((texture->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
2125                         texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2126                 else
2127                         texture->basematerialflags = MATERIALFLAG_WALL;
2128
2129                 if (shader->layers[0].alphatest)
2130                         texture->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
2131                 if (shader->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2132                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_NOCULLFACE;
2133                 if (shader->textureflags & Q3TEXTUREFLAG_POLYGONOFFSET)
2134                         texture->biaspolygonoffset -= 2;
2135                 if (shader->textureflags & Q3TEXTUREFLAG_REFRACTION)
2136                         texture->basematerialflags |= MATERIALFLAG_REFRACTION;
2137                 if (shader->textureflags & Q3TEXTUREFLAG_REFLECTION)
2138                         texture->basematerialflags |= MATERIALFLAG_REFLECTION;
2139                 if (shader->textureflags & Q3TEXTUREFLAG_WATERSHADER)
2140                         texture->basematerialflags |= MATERIALFLAG_WATERSHADER;
2141                 texture->customblendfunc[0] = GL_ONE;
2142                 texture->customblendfunc[1] = GL_ZERO;
2143                 if (shader->numlayers > 0)
2144                 {
2145                         texture->customblendfunc[0] = shader->layers[0].blendfunc[0];
2146                         texture->customblendfunc[1] = shader->layers[0].blendfunc[1];
2147 /*
2148 Q3 shader blendfuncs actually used in the game (* = supported by DP)
2149 * additive               GL_ONE GL_ONE
2150 additive weird         GL_ONE GL_SRC_ALPHA
2151 additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
2152 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
2153 alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
2154 brighten               GL_DST_COLOR GL_ONE
2155 brighten               GL_ONE GL_SRC_COLOR
2156 brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
2157 brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
2158 * modulate               GL_DST_COLOR GL_ZERO
2159 * modulate               GL_ZERO GL_SRC_COLOR
2160 modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
2161 modulate inverse alpha GL_ZERO GL_SRC_ALPHA
2162 modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
2163 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
2164 * no blend               GL_ONE GL_ZERO
2165 nothing                GL_ZERO GL_ONE
2166 */
2167                         // if not opaque, figure out what blendfunc to use
2168                         if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
2169                         {
2170                                 if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
2171                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2172                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
2173                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2174                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
2175                                         texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2176                                 else
2177                                         texture->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2178                         }
2179                 }
2180                 if (!shader->lighting)
2181                         texture->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
2182                 if (shader->primarylayer >= 0)
2183                 {
2184                         q3shaderinfo_layer_t* primarylayer = shader->layers + shader->primarylayer;
2185                         // copy over many primarylayer parameters
2186                         texture->rgbgen = primarylayer->rgbgen;
2187                         texture->alphagen = primarylayer->alphagen;
2188                         texture->tcgen = primarylayer->tcgen;
2189                         memcpy(texture->tcmods, primarylayer->tcmods, sizeof(texture->tcmods));
2190                         // load the textures
2191                         texture->numskinframes = primarylayer->numframes;
2192                         texture->skinframerate = primarylayer->framerate;
2193                         for (j = 0;j < primarylayer->numframes;j++)
2194                         {
2195                                 if(cls.state == ca_dedicated)
2196                                 {
2197                                         texture->skinframes[j] = NULL;
2198                                 }
2199                                 else if (!(texture->skinframes[j] = R_SkinFrame_LoadExternal(primarylayer->texturename[j], primarylayer->texflags & texflagsmask, false)))
2200                                 {
2201                                         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);
2202                                         texture->skinframes[j] = R_SkinFrame_LoadMissing();
2203                                 }
2204                         }
2205                 }
2206                 if (shader->backgroundlayer >= 0)
2207                 {
2208                         q3shaderinfo_layer_t* backgroundlayer = shader->layers + shader->backgroundlayer;
2209                         // copy over one secondarylayer parameter
2210                         memcpy(texture->backgroundtcmods, backgroundlayer->tcmods, sizeof(texture->backgroundtcmods));
2211                         // load the textures
2212                         texture->backgroundnumskinframes = backgroundlayer->numframes;
2213                         texture->backgroundskinframerate = backgroundlayer->framerate;
2214                         for (j = 0;j < backgroundlayer->numframes;j++)
2215                         {
2216                                 if(cls.state == ca_dedicated)
2217                                 {
2218                                         texture->skinframes[j] = NULL;
2219                                 }
2220                                 else if (!(texture->backgroundskinframes[j] = R_SkinFrame_LoadExternal(backgroundlayer->texturename[j], backgroundlayer->texflags & texflagsmask, false)))
2221                                 {
2222                                         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);
2223                                         texture->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
2224                                 }
2225                         }
2226                 }
2227                 if (shader->dpshadow)
2228                         texture->basematerialflags &= ~MATERIALFLAG_NOSHADOW;
2229                 if (shader->dpnoshadow)
2230                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW;
2231                 memcpy(texture->deforms, shader->deforms, sizeof(texture->deforms));
2232                 texture->reflectmin = shader->reflectmin;
2233                 texture->reflectmax = shader->reflectmax;
2234                 texture->refractfactor = shader->refractfactor;
2235                 Vector4Copy(shader->refractcolor4f, texture->refractcolor4f);
2236                 texture->reflectfactor = shader->reflectfactor;
2237                 Vector4Copy(shader->reflectcolor4f, texture->reflectcolor4f);
2238                 texture->r_water_wateralpha = shader->r_water_wateralpha;
2239                 texture->specularscalemod = shader->specularscalemod;
2240                 texture->specularpowermod = shader->specularpowermod;
2241                 if (shader->dpreflectcube[0])
2242                         texture->reflectcubetexture = R_GetCubemap(shader->dpreflectcube);
2243         }
2244         else if (!strcmp(texture->name, "noshader") || !texture->name[0])
2245         {
2246                 if (developer_extra.integer)
2247                         Con_DPrintf("^1%s:^7 using fallback noshader material for ^3\"%s\"\n", loadmodel->name, name);
2248                 texture->surfaceparms = 0;
2249         }
2250         else if (!strcmp(texture->name, "common/nodraw") || !strcmp(texture->name, "textures/common/nodraw"))
2251         {
2252                 if (developer_extra.integer)
2253                         Con_DPrintf("^1%s:^7 using fallback nodraw material for ^3\"%s\"\n", loadmodel->name, name);
2254                 texture->surfaceparms = 0;
2255                 texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2256         }
2257         else
2258         {
2259                 if (developer_extra.integer)
2260                         Con_DPrintf("^1%s:^7 No shader found for texture ^3\"%s\"\n", loadmodel->name, texture->name);
2261                 texture->surfaceparms = 0;
2262                 if (texture->surfaceflags & Q3SURFACEFLAG_NODRAW)
2263                         texture->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2264                 else if (texture->surfaceflags & Q3SURFACEFLAG_SKY)
2265                         texture->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2266                 else
2267                         texture->basematerialflags |= MATERIALFLAG_WALL;
2268                 texture->numskinframes = 1;
2269                 if(cls.state == ca_dedicated)
2270                 {
2271                         texture->skinframes[0] = NULL;
2272                 }
2273                 else
2274                 {
2275                         if (fallback)
2276                         {
2277                                 if ((texture->skinframes[0] = R_SkinFrame_LoadExternal(texture->name, defaulttexflags, false)))
2278                                 {
2279                                         if(texture->skinframes[0]->hasalpha)
2280                                                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2281                                 }
2282                                 else
2283                                         success = false;
2284                         }
2285                         else
2286                                 success = false;
2287                         if (!success && warnmissing)
2288                                 Con_Printf("^1%s:^7 could not load texture ^3\"%s\"\n", loadmodel->name, texture->name);
2289                 }
2290         }
2291         // init the animation variables
2292         texture->currentframe = texture;
2293         if (texture->numskinframes < 1)
2294                 texture->numskinframes = 1;
2295         if (!texture->skinframes[0])
2296                 texture->skinframes[0] = R_SkinFrame_LoadMissing();
2297         texture->currentskinframe = texture->skinframes[0];
2298         texture->backgroundcurrentskinframe = texture->backgroundskinframes[0];
2299         return success;
2300 }
2301
2302 skinfile_t *Mod_LoadSkinFiles(void)
2303 {
2304         int i, words, line, wordsoverflow;
2305         char *text;
2306         const char *data;
2307         skinfile_t *skinfile = NULL, *first = NULL;
2308         skinfileitem_t *skinfileitem;
2309         char word[10][MAX_QPATH];
2310
2311 /*
2312 sample file:
2313 U_bodyBox,models/players/Legoman/BikerA2.tga
2314 U_RArm,models/players/Legoman/BikerA1.tga
2315 U_LArm,models/players/Legoman/BikerA1.tga
2316 U_armor,common/nodraw
2317 U_sword,common/nodraw
2318 U_shield,common/nodraw
2319 U_homb,common/nodraw
2320 U_backpack,common/nodraw
2321 U_colcha,common/nodraw
2322 tag_head,
2323 tag_weapon,
2324 tag_torso,
2325 */
2326         memset(word, 0, sizeof(word));
2327         for (i = 0;i < 256 && (data = text = (char *)FS_LoadFile(va("%s_%i.skin", loadmodel->name, i), tempmempool, true, NULL));i++)
2328         {
2329                 // If it's the first file we parse
2330                 if (skinfile == NULL)
2331                 {
2332                         skinfile = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2333                         first = skinfile;
2334                 }
2335                 else
2336                 {
2337                         skinfile->next = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2338                         skinfile = skinfile->next;
2339                 }
2340                 skinfile->next = NULL;
2341
2342                 for(line = 0;;line++)
2343                 {
2344                         // parse line
2345                         if (!COM_ParseToken_QuakeC(&data, true))
2346                                 break;
2347                         if (!strcmp(com_token, "\n"))
2348                                 continue;
2349                         words = 0;
2350                         wordsoverflow = false;
2351                         do
2352                         {
2353                                 if (words < 10)
2354                                         strlcpy(word[words++], com_token, sizeof (word[0]));
2355                                 else
2356                                         wordsoverflow = true;
2357                         }
2358                         while (COM_ParseToken_QuakeC(&data, true) && strcmp(com_token, "\n"));
2359                         if (wordsoverflow)
2360                         {
2361                                 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);
2362                                 continue;
2363                         }
2364                         // words is always >= 1
2365                         if (!strcmp(word[0], "replace"))
2366                         {
2367                                 if (words == 3)
2368                                 {
2369                                         if (developer_loading.integer)
2370                                                 Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[1], word[2]);
2371                                         skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2372                                         skinfileitem->next = skinfile->items;
2373                                         skinfile->items = skinfileitem;
2374                                         strlcpy (skinfileitem->name, word[1], sizeof (skinfileitem->name));
2375                                         strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2376                                 }
2377                                 else
2378                                         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]);
2379                         }
2380                         else if (words >= 2 && !strncmp(word[0], "tag_", 4))
2381                         {
2382                                 // tag name, like "tag_weapon,"
2383                                 // not used for anything (not even in Quake3)
2384                         }
2385                         else if (words >= 2 && !strcmp(word[1], ","))
2386                         {
2387                                 // mesh shader name, like "U_RArm,models/players/Legoman/BikerA1.tga"
2388                                 if (developer_loading.integer)
2389                                         Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[0], word[2]);
2390                                 skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2391                                 skinfileitem->next = skinfile->items;
2392                                 skinfile->items = skinfileitem;
2393                                 strlcpy (skinfileitem->name, word[0], sizeof (skinfileitem->name));
2394                                 strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2395                         }
2396                         else
2397                                 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);
2398                 }
2399                 Mem_Free(text);
2400         }
2401         if (i)
2402                 loadmodel->numskins = i;
2403         return first;
2404 }
2405
2406 void Mod_FreeSkinFiles(skinfile_t *skinfile)
2407 {
2408         skinfile_t *next;
2409         skinfileitem_t *skinfileitem, *nextitem;
2410         for (;skinfile;skinfile = next)
2411         {
2412                 next = skinfile->next;
2413                 for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = nextitem)
2414                 {
2415                         nextitem = skinfileitem->next;
2416                         Mem_Free(skinfileitem);
2417                 }
2418                 Mem_Free(skinfile);
2419         }
2420 }
2421
2422 int Mod_CountSkinFiles(skinfile_t *skinfile)
2423 {
2424         int i;
2425         for (i = 0;skinfile;skinfile = skinfile->next, i++);
2426         return i;
2427 }
2428
2429 void Mod_SnapVertices(int numcomponents, int numvertices, float *vertices, float snap)
2430 {
2431         int i;
2432         double isnap = 1.0 / snap;
2433         for (i = 0;i < numvertices*numcomponents;i++)
2434                 vertices[i] = floor(vertices[i]*isnap)*snap;
2435 }
2436
2437 int Mod_RemoveDegenerateTriangles(int numtriangles, const int *inelement3i, int *outelement3i, const float *vertex3f)
2438 {
2439         int i, outtriangles;
2440         float edgedir1[3], edgedir2[3], temp[3];
2441         // a degenerate triangle is one with no width (thickness, surface area)
2442         // these are characterized by having all 3 points colinear (along a line)
2443         // or having two points identical
2444         // the simplest check is to calculate the triangle's area
2445         for (i = 0, outtriangles = 0;i < numtriangles;i++, inelement3i += 3)
2446         {
2447                 // calculate first edge
2448                 VectorSubtract(vertex3f + inelement3i[1] * 3, vertex3f + inelement3i[0] * 3, edgedir1);
2449                 VectorSubtract(vertex3f + inelement3i[2] * 3, vertex3f + inelement3i[0] * 3, edgedir2);
2450                 CrossProduct(edgedir1, edgedir2, temp);
2451                 if (VectorLength2(temp) < 0.001f)
2452                         continue; // degenerate triangle (no area)
2453                 // valid triangle (has area)
2454                 VectorCopy(inelement3i, outelement3i);
2455                 outelement3i += 3;
2456                 outtriangles++;
2457         }
2458         return outtriangles;
2459 }
2460
2461 void Mod_VertexRangeFromElements(int numelements, const int *elements, int *firstvertexpointer, int *lastvertexpointer)
2462 {
2463         int i, e;
2464         int firstvertex, lastvertex;
2465         if (numelements > 0 && elements)
2466         {
2467                 firstvertex = lastvertex = elements[0];
2468                 for (i = 1;i < numelements;i++)
2469                 {
2470                         e = elements[i];
2471                         firstvertex = min(firstvertex, e);
2472                         lastvertex = max(lastvertex, e);
2473                 }
2474         }
2475         else
2476                 firstvertex = lastvertex = 0;
2477         if (firstvertexpointer)
2478                 *firstvertexpointer = firstvertex;
2479         if (lastvertexpointer)
2480                 *lastvertexpointer = lastvertex;
2481 }
2482
2483 void Mod_MakeSortedSurfaces(dp_model_t *mod)
2484 {
2485         // make an optimal set of texture-sorted batches to draw...
2486         int j, t;
2487         int *firstsurfacefortexture;
2488         int *numsurfacesfortexture;
2489         if (!mod->sortedmodelsurfaces)
2490                 mod->sortedmodelsurfaces = (int *) Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
2491         firstsurfacefortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*firstsurfacefortexture));
2492         numsurfacesfortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*numsurfacesfortexture));
2493         memset(numsurfacesfortexture, 0, mod->num_textures * sizeof(*numsurfacesfortexture));
2494         for (j = 0;j < mod->nummodelsurfaces;j++)
2495         {
2496                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2497                 int t = (int)(surface->texture - mod->data_textures);
2498                 numsurfacesfortexture[t]++;
2499         }
2500         j = 0;
2501         for (t = 0;t < mod->num_textures;t++)
2502         {
2503                 firstsurfacefortexture[t] = j;
2504                 j += numsurfacesfortexture[t];
2505         }
2506         for (j = 0;j < mod->nummodelsurfaces;j++)
2507         {
2508                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2509                 int t = (int)(surface->texture - mod->data_textures);
2510                 mod->sortedmodelsurfaces[firstsurfacefortexture[t]++] = j + mod->firstmodelsurface;
2511         }
2512         Mem_Free(firstsurfacefortexture);
2513         Mem_Free(numsurfacesfortexture);
2514 }
2515
2516 void Mod_BuildVBOs(void)
2517 {
2518         if (gl_paranoid.integer && loadmodel->surfmesh.data_element3s && loadmodel->surfmesh.data_element3i)
2519         {
2520                 int i;
2521                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2522                 {
2523                         if (loadmodel->surfmesh.data_element3s[i] != loadmodel->surfmesh.data_element3i[i])
2524                         {
2525                                 Con_Printf("Mod_BuildVBOs: element %u is incorrect (%u should be %u)\n", i, loadmodel->surfmesh.data_element3s[i], loadmodel->surfmesh.data_element3i[i]);
2526                                 loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2527                         }
2528                 }
2529         }
2530
2531         if (!vid.support.arb_vertex_buffer_object)
2532                 return;
2533         // only build a vbo if one has not already been created (this is important for brush models which load specially)
2534         if (loadmodel->surfmesh.vbo)
2535                 return;
2536
2537         // element buffer is easy because it's just one array
2538         if (loadmodel->surfmesh.num_triangles)
2539         {
2540                 if (loadmodel->surfmesh.data_element3s)
2541                         loadmodel->surfmesh.ebo3s = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, loadmodel->surfmesh.data_element3s, loadmodel->surfmesh.num_triangles * sizeof(unsigned short[3]), loadmodel->name);
2542                 else
2543                         loadmodel->surfmesh.ebo3i = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, loadmodel->surfmesh.data_element3i, loadmodel->surfmesh.num_triangles * sizeof(unsigned int[3]), loadmodel->name);
2544         }
2545
2546         // vertex buffer is several arrays and we put them in the same buffer
2547         //
2548         // is this wise?  the texcoordtexture2f array is used with dynamic
2549         // vertex/svector/tvector/normal when rendering animated models, on the
2550         // other hand animated models don't use a lot of vertices anyway...
2551         if (loadmodel->surfmesh.num_vertices)
2552         {
2553                 size_t size;
2554                 unsigned char *mem;
2555                 size = 0;
2556                 loadmodel->surfmesh.vbooffset_vertex3f           = size;if (loadmodel->surfmesh.data_vertex3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2557                 loadmodel->surfmesh.vbooffset_svector3f          = size;if (loadmodel->surfmesh.data_svector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2558                 loadmodel->surfmesh.vbooffset_tvector3f          = size;if (loadmodel->surfmesh.data_tvector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2559                 loadmodel->surfmesh.vbooffset_normal3f           = size;if (loadmodel->surfmesh.data_normal3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2560                 loadmodel->surfmesh.vbooffset_texcoordtexture2f  = size;if (loadmodel->surfmesh.data_texcoordtexture2f ) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2561                 loadmodel->surfmesh.vbooffset_texcoordlightmap2f = size;if (loadmodel->surfmesh.data_texcoordlightmap2f) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2562                 loadmodel->surfmesh.vbooffset_lightmapcolor4f    = size;if (loadmodel->surfmesh.data_lightmapcolor4f   ) size += loadmodel->surfmesh.num_vertices * sizeof(float[4]);
2563                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
2564                 if (loadmodel->surfmesh.data_vertex3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_vertex3f          , loadmodel->surfmesh.data_vertex3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2565                 if (loadmodel->surfmesh.data_svector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_svector3f         , loadmodel->surfmesh.data_svector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2566                 if (loadmodel->surfmesh.data_tvector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_tvector3f         , loadmodel->surfmesh.data_tvector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2567                 if (loadmodel->surfmesh.data_normal3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_normal3f          , loadmodel->surfmesh.data_normal3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2568                 if (loadmodel->surfmesh.data_texcoordtexture2f ) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordtexture2f , loadmodel->surfmesh.data_texcoordtexture2f , loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2569                 if (loadmodel->surfmesh.data_texcoordlightmap2f) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordlightmap2f, loadmodel->surfmesh.data_texcoordlightmap2f, loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2570                 if (loadmodel->surfmesh.data_lightmapcolor4f   ) memcpy(mem + loadmodel->surfmesh.vbooffset_lightmapcolor4f   , loadmodel->surfmesh.data_lightmapcolor4f   , loadmodel->surfmesh.num_vertices * sizeof(float[4]));
2571                 loadmodel->surfmesh.vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, loadmodel->name);
2572                 Mem_Free(mem);
2573         }
2574 }
2575
2576 static void Mod_Decompile_OBJ(dp_model_t *model, const char *filename, const char *mtlfilename, const char *originalfilename)
2577 {
2578         int vertexindex, surfaceindex, triangleindex, textureindex, countvertices = 0, countsurfaces = 0, countfaces = 0, counttextures = 0;
2579         int a, b, c;
2580         const char *texname;
2581         const int *e;
2582         const float *v, *vn, *vt;
2583         size_t l;
2584         size_t outbufferpos = 0;
2585         size_t outbuffermax = 0x100000;
2586         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2587         const msurface_t *surface;
2588         const int maxtextures = 256;
2589         char *texturenames = (char *) Z_Malloc(maxtextures * MAX_QPATH);
2590
2591         // construct the mtllib file
2592         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "# mtllib for %s exported by darkplaces engine\n", originalfilename);
2593         if (l > 0)
2594                 outbufferpos += l;
2595         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2596         {
2597                 countsurfaces++;
2598                 countvertices += surface->num_vertices;
2599                 countfaces += surface->num_triangles;
2600                 texname = (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default";
2601                 for (textureindex = 0;textureindex < counttextures;textureindex++)
2602                         if (!strcmp(texturenames + textureindex * MAX_QPATH, texname))
2603                                 break;
2604                 if (textureindex < counttextures)
2605                         continue; // already wrote this material entry
2606                 if (textureindex >= maxtextures)
2607                         continue; // just a precaution
2608                 textureindex = counttextures++;
2609                 strlcpy(texturenames + textureindex * MAX_QPATH, texname, MAX_QPATH);
2610                 if (outbufferpos >= outbuffermax >> 1)
2611                 {
2612                         outbuffermax *= 2;
2613                         oldbuffer = outbuffer;
2614                         outbuffer = (char *) Z_Malloc(outbuffermax);
2615                         memcpy(outbuffer, oldbuffer, outbufferpos);
2616                         Z_Free(oldbuffer);
2617                 }
2618                 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");
2619                 if (l > 0)
2620                         outbufferpos += l;
2621         }
2622
2623         // write the mtllib file
2624         FS_WriteFile(mtlfilename, outbuffer, outbufferpos);
2625         outbufferpos = 0;
2626
2627         // construct the obj file
2628         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);
2629         if (l > 0)
2630                 outbufferpos += l;
2631         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)
2632         {
2633                 if (outbufferpos >= outbuffermax >> 1)
2634                 {
2635                         outbuffermax *= 2;
2636                         oldbuffer = outbuffer;
2637                         outbuffer = (char *) Z_Malloc(outbuffermax);
2638                         memcpy(outbuffer, oldbuffer, outbufferpos);
2639                         Z_Free(oldbuffer);
2640                 }
2641                 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]);
2642                 if (l > 0)
2643                         outbufferpos += l;
2644         }
2645         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2646         {
2647                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "usemtl %s\n", (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default");
2648                 if (l > 0)
2649                         outbufferpos += l;
2650                 for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2651                 {
2652                         if (outbufferpos >= outbuffermax >> 1)
2653                         {
2654                                 outbuffermax *= 2;
2655                                 oldbuffer = outbuffer;
2656                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2657                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2658                                 Z_Free(oldbuffer);
2659                         }
2660                         a = e[0]+1;
2661                         b = e[2]+1;
2662                         c = e[1]+1;
2663                         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);
2664                         if (l > 0)
2665                                 outbufferpos += l;
2666                 }
2667         }
2668
2669         // write the obj file
2670         FS_WriteFile(filename, outbuffer, outbufferpos);
2671
2672         // clean up
2673         Z_Free(outbuffer);
2674         Z_Free(texturenames);
2675
2676         // print some stats
2677         Con_Printf("Wrote %s (%i bytes, %i vertices, %i faces, %i surfaces with %i distinct textures)\n", filename, (int)outbufferpos, countvertices, countfaces, countsurfaces, counttextures);
2678 }
2679
2680 static void Mod_Decompile_SMD(dp_model_t *model, const char *filename, int firstpose, int numposes, qboolean writetriangles)
2681 {
2682         int countnodes = 0, counttriangles = 0, countframes = 0;
2683         int surfaceindex;
2684         int triangleindex;
2685         int transformindex;
2686         int poseindex;
2687         int cornerindex;
2688         const int *e;
2689         size_t l;
2690         size_t outbufferpos = 0;
2691         size_t outbuffermax = 0x100000;
2692         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2693         const msurface_t *surface;
2694         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "version 1\nnodes\n");
2695         if (l > 0)
2696                 outbufferpos += l;
2697         for (transformindex = 0;transformindex < model->num_bones;transformindex++)
2698         {
2699                 if (outbufferpos >= outbuffermax >> 1)
2700                 {
2701                         outbuffermax *= 2;
2702                         oldbuffer = outbuffer;
2703                         outbuffer = (char *) Z_Malloc(outbuffermax);
2704                         memcpy(outbuffer, oldbuffer, outbufferpos);
2705                         Z_Free(oldbuffer);
2706                 }
2707                 countnodes++;
2708                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i \"%s\" %3i\n", transformindex, model->data_bones[transformindex].name, model->data_bones[transformindex].parent);
2709                 if (l > 0)
2710                         outbufferpos += l;
2711         }
2712         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\nskeleton\n");
2713         if (l > 0)
2714                 outbufferpos += l;
2715         for (poseindex = 0;poseindex < numposes;poseindex++)
2716         {
2717                 countframes++;
2718                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "time %i\n", poseindex);
2719                 if (l > 0)
2720                         outbufferpos += l;
2721                 for (transformindex = 0;transformindex < model->num_bones;transformindex++)
2722                 {
2723                         float angles[3];
2724                         float mtest[4][3];
2725                         matrix4x4_t posematrix;
2726                         if (outbufferpos >= outbuffermax >> 1)
2727                         {
2728                                 outbuffermax *= 2;
2729                                 oldbuffer = outbuffer;
2730                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2731                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2732                                 Z_Free(oldbuffer);
2733                         }
2734
2735                         // strangely the smd angles are for a transposed matrix, so we
2736                         // have to generate a transposed matrix, then convert that...
2737                         Matrix4x4_FromBonePose6s(&posematrix, model->num_posescale, model->data_poses6s + 6*(model->num_bones * poseindex + transformindex));
2738                         Matrix4x4_ToArray12FloatGL(&posematrix, mtest[0]);
2739                         AnglesFromVectors(angles, mtest[0], mtest[2], false);
2740                         if (angles[0] >= 180) angles[0] -= 360;
2741                         if (angles[1] >= 180) angles[1] -= 360;
2742                         if (angles[2] >= 180) angles[2] -= 360;
2743
2744 #if 0
2745 {
2746                         float a = DEG2RAD(angles[ROLL]);
2747                         float b = DEG2RAD(angles[PITCH]);
2748                         float c = DEG2RAD(angles[YAW]);
2749                         float cy, sy, cp, sp, cr, sr;
2750                         float test[4][3];
2751                         // smd matrix construction, for comparing
2752                         sy = sin(c);
2753                         cy = cos(c);
2754                         sp = sin(b);
2755                         cp = cos(b);
2756                         sr = sin(a);
2757                         cr = cos(a);
2758
2759                         test[0][0] = cp*cy;
2760                         test[0][1] = cp*sy;
2761                         test[0][2] = -sp;
2762                         test[1][0] = sr*sp*cy+cr*-sy;
2763                         test[1][1] = sr*sp*sy+cr*cy;
2764                         test[1][2] = sr*cp;
2765                         test[2][0] = (cr*sp*cy+-sr*-sy);
2766                         test[2][1] = (cr*sp*sy+-sr*cy);
2767                         test[2][2] = cr*cp;
2768                         test[3][0] = pose[9];
2769                         test[3][1] = pose[10];
2770                         test[3][2] = pose[11];
2771 }
2772 #endif
2773                         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]));
2774                         if (l > 0)
2775                                 outbufferpos += l;
2776                 }
2777         }
2778         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
2779         if (l > 0)
2780                 outbufferpos += l;
2781         if (writetriangles)
2782         {
2783                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "triangles\n");
2784                 if (l > 0)
2785                         outbufferpos += l;
2786                 for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2787                 {
2788                         for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2789                         {
2790                                 counttriangles++;
2791                                 if (outbufferpos >= outbuffermax >> 1)
2792                                 {
2793                                         outbuffermax *= 2;
2794                                         oldbuffer = outbuffer;
2795                                         outbuffer = (char *) Z_Malloc(outbuffermax);
2796                                         memcpy(outbuffer, oldbuffer, outbufferpos);
2797                                         Z_Free(oldbuffer);
2798                                 }
2799                                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%s\n", surface->texture && surface->texture->name[0] ? surface->texture->name : "default.bmp");
2800                                 if (l > 0)
2801                                         outbufferpos += l;
2802                                 for (cornerindex = 0;cornerindex < 3;cornerindex++)
2803                                 {
2804                                         const int index = e[2-cornerindex];
2805                                         const float *v = model->surfmesh.data_vertex3f + index * 3;
2806                                         const float *vn = model->surfmesh.data_normal3f + index * 3;
2807                                         const float *vt = model->surfmesh.data_texcoordtexture2f + index * 2;
2808                                         const int *wi = model->surfmesh.data_vertexweightindex4i + index * 4;
2809                                         const float *wf = model->surfmesh.data_vertexweightinfluence4f + index * 4;
2810                                              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], wi[1], wf[1], wi[2], wf[2], wi[3], wf[3]);
2811                                         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], wi[1], wf[1], wi[2], wf[2]);
2812                                         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], wi[1], wf[1]);
2813                                         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]);
2814                                         if (l > 0)
2815                                                 outbufferpos += l;
2816                                 }
2817                         }
2818                 }
2819                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
2820                 if (l > 0)
2821                         outbufferpos += l;
2822         }
2823
2824         FS_WriteFile(filename, outbuffer, outbufferpos);
2825         Z_Free(outbuffer);
2826
2827         Con_Printf("Wrote %s (%i bytes, %i nodes, %i frames, %i triangles)\n", filename, (int)outbufferpos, countnodes, countframes, counttriangles);
2828 }
2829
2830 /*
2831 ================
2832 Mod_Decompile_f
2833
2834 decompiles a model to editable files
2835 ================
2836 */
2837 static void Mod_Decompile_f(void)
2838 {
2839         int i, j, k, l, first, count;
2840         dp_model_t *mod;
2841         char inname[MAX_QPATH];
2842         char outname[MAX_QPATH];
2843         char mtlname[MAX_QPATH];
2844         char basename[MAX_QPATH];
2845         char animname[MAX_QPATH];
2846         char animname2[MAX_QPATH];
2847         char zymtextbuffer[16384];
2848         char dpmtextbuffer[16384];
2849         int zymtextsize = 0;
2850         int dpmtextsize = 0;
2851
2852         if (Cmd_Argc() != 2)
2853         {
2854                 Con_Print("usage: modeldecompile <filename>\n");
2855                 return;
2856         }
2857
2858         strlcpy(inname, Cmd_Argv(1), sizeof(inname));
2859         FS_StripExtension(inname, basename, sizeof(basename));
2860
2861         mod = Mod_ForName(inname, false, true, inname[0] == '*' ? cl.model_name[1] : NULL);
2862         if (mod->brush.submodel)
2863         {
2864                 // if we're decompiling a submodel, be sure to give it a proper name based on its parent
2865                 FS_StripExtension(cl.model_name[1], outname, sizeof(outname));
2866                 dpsnprintf(basename, sizeof(basename), "%s/%s", outname, mod->name);
2867                 outname[0] = 0;
2868         }
2869         if (!mod)
2870         {
2871                 Con_Print("No such model\n");
2872                 return;
2873         }
2874         if (!mod->surfmesh.num_triangles)
2875         {
2876                 Con_Print("Empty model (or sprite)\n");
2877                 return;
2878         }
2879
2880         // export OBJ if possible (not on sprites)
2881         if (mod->surfmesh.num_triangles)
2882         {
2883                 dpsnprintf(outname, sizeof(outname), "%s_decompiled.obj", basename);
2884                 dpsnprintf(mtlname, sizeof(mtlname), "%s_decompiled.mtl", basename);
2885                 Mod_Decompile_OBJ(mod, outname, mtlname, inname);
2886         }
2887
2888         // export SMD if possible (only for skeletal models)
2889         if (mod->surfmesh.num_triangles && mod->num_bones)
2890         {
2891                 dpsnprintf(outname, sizeof(outname), "%s_decompiled/ref1.smd", basename);
2892                 Mod_Decompile_SMD(mod, outname, 0, 1, true);
2893                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "output out.zym\nscale 1\norigin 0 0 0\nmesh ref1.smd\n");
2894                 if (l > 0) zymtextsize += l;
2895                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "outputdir .\nmodel out\nscale 1\norigin 0 0 0\nscene ref1.smd\n");
2896                 if (l > 0) dpmtextsize += l;
2897                 for (i = 0;i < mod->numframes;i = j)
2898                 {
2899                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
2900                         first = mod->animscenes[i].firstframe;
2901                         if (mod->animscenes[i].framecount > 1)
2902                         {
2903                                 // framegroup anim
2904                                 count = mod->animscenes[i].framecount;
2905                                 j = i + 1;
2906                         }
2907                         else
2908                         {
2909                                 // individual frame
2910                                 // check for additional frames with same name
2911                                 for (l = 0, k = strlen(animname);animname[l];l++)
2912                                         if ((animname[l] < '0' || animname[l] > '9') && animname[l] != '_')
2913                                                 k = l + 1;
2914                                 animname[k] = 0;
2915                                 count = mod->num_poses - first;
2916                                 for (j = i + 1;j < mod->numframes;j++)
2917                                 {
2918                                         strlcpy(animname2, mod->animscenes[j].name, sizeof(animname2));
2919                                         for (l = 0, k = strlen(animname2);animname2[l];l++)
2920                                                 if ((animname2[l] < '0' || animname2[l] > '9') && animname2[l] != '_')
2921                                                         k = l + 1;
2922                                         animname2[k] = 0;
2923                                         if (strcmp(animname2, animname) || mod->animscenes[j].framecount > 1)
2924                                         {
2925                                                 count = mod->animscenes[j].firstframe - first;
2926                                                 break;
2927                                         }
2928                                 }
2929                                 // if it's only one frame, use the original frame name
2930                                 if (j == i + 1)
2931                                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
2932
2933                         }
2934                         dpsnprintf(outname, sizeof(outname), "%s_decompiled/%s.smd", basename, animname);
2935                         Mod_Decompile_SMD(mod, outname, first, count, false);
2936                         if (zymtextsize < (int)sizeof(zymtextbuffer) - 100)
2937                         {
2938                                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "scene %s.smd fps %g\n", animname, mod->animscenes[i].framerate);
2939                                 if (l > 0) zymtextsize += l;
2940                         }
2941                         if (dpmtextsize < (int)sizeof(dpmtextbuffer) - 100)
2942                         {
2943                                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "scene %s.smd\n", animname);
2944                                 if (l > 0) dpmtextsize += l;
2945                         }
2946                 }
2947                 if (zymtextsize)
2948                         FS_WriteFile(va("%s_decompiled/out_zym.txt", basename), zymtextbuffer, (fs_offset_t)zymtextsize);
2949                 if (dpmtextsize)
2950                         FS_WriteFile(va("%s_decompiled/out_dpm.txt", basename), dpmtextbuffer, (fs_offset_t)dpmtextsize);
2951         }
2952 }
2953
2954 void Mod_AllocLightmap_Init(mod_alloclightmap_state_t *state, int width, int height)
2955 {
2956         int y;
2957         memset(state, 0, sizeof(*state));
2958         state->width = width;
2959         state->height = height;
2960         state->currentY = 0;
2961         state->rows = Mem_Alloc(loadmodel->mempool, state->height * sizeof(*state->rows));
2962         for (y = 0;y < state->height;y++)
2963         {
2964                 state->rows[y].currentX = 0;
2965                 state->rows[y].rowY = -1;
2966         }
2967 }
2968
2969 void Mod_AllocLightmap_Reset(mod_alloclightmap_state_t *state)
2970 {
2971         int y;
2972         state->currentY = 0;
2973         for (y = 0;y < state->height;y++)
2974         {
2975                 state->rows[y].currentX = 0;
2976                 state->rows[y].rowY = -1;
2977         }
2978 }
2979
2980 void Mod_AllocLightmap_Free(mod_alloclightmap_state_t *state)
2981 {
2982         if (state->rows)
2983                 Mem_Free(state->rows);
2984         memset(state, 0, sizeof(*state));
2985 }
2986
2987 qboolean Mod_AllocLightmap_Block(mod_alloclightmap_state_t *state, int blockwidth, int blockheight, int *outx, int *outy)
2988 {
2989         mod_alloclightmap_row_t *row;
2990         int y;
2991
2992         row = state->rows + blockheight;
2993         if ((row->rowY < 0) || (row->currentX + blockwidth > state->width))
2994         {
2995                 if (state->currentY + blockheight <= state->height)
2996                 {
2997                         // use the current allocation position
2998                         row->rowY = state->currentY;
2999                         row->currentX = 0;
3000                         state->currentY += blockheight;
3001                 }
3002                 else
3003                 {
3004                         // find another position
3005                         for (y = blockheight;y < state->height;y++)
3006                         {
3007                                 if ((state->rows[y].rowY >= 0) && (state->rows[y].currentX + blockwidth <= state->width))
3008                                 {
3009                                         row = state->rows + y;
3010                                         break;
3011                                 }
3012                         }
3013                         if (y == state->height)
3014                                 return false;
3015                 }
3016         }
3017         *outy = row->rowY;
3018         *outx = row->currentX;
3019         row->currentX += blockwidth;
3020
3021         return true;
3022 }
3023
3024 typedef struct lightmapsample_s
3025 {
3026         float pos[3];
3027         float sh1[4][3];
3028         float *vertex_color;
3029         unsigned char *lm_bgr;
3030         unsigned char *lm_dir;
3031 }
3032 lightmapsample_t;
3033
3034 typedef struct lightmapvertex_s
3035 {
3036         int index;
3037         float pos[3];
3038         float normal[3];
3039         float texcoordbase[2];
3040         float texcoordlightmap[2];
3041         float lightcolor[4];
3042 }
3043 lightmapvertex_t;
3044
3045 typedef struct lightmaptriangle_s
3046 {
3047         int triangleindex;
3048         int surfaceindex;
3049         int lightmapindex;
3050         int axis;
3051         int lmoffset[2];
3052         int lmsize[2];
3053         // 2D modelspace coordinates of min corner
3054         // snapped to lightmap grid but not in grid coordinates
3055         float lmbase[2];
3056         // 2D modelspace to lightmap coordinate scale
3057         float lmscale[2];
3058         float vertex[3][3];
3059         float mins[3];
3060         float maxs[3];
3061 }
3062 lightmaptriangle_t;
3063
3064 typedef struct lightmaplight_s
3065 {
3066         float origin[3];
3067         float radius;
3068         float iradius;
3069         float radius2;
3070         float color[3];
3071         svbsp_t svbsp;
3072 }
3073 lightmaplight_t;
3074
3075 lightmaptriangle_t *mod_generatelightmaps_lightmaptriangles;
3076
3077 #define MAX_LIGHTMAPSAMPLES 64
3078 static int mod_generatelightmaps_numoffsets[3];
3079 static float mod_generatelightmaps_offsets[3][MAX_LIGHTMAPSAMPLES][3];
3080
3081 static int mod_generatelightmaps_numlights;
3082 static lightmaplight_t *mod_generatelightmaps_lightinfo;
3083
3084 extern int R_Shadow_GetRTLightInfo(unsigned int lightindex, float *origin, float *radius, float *color);
3085 extern cvar_t r_shadow_lightattenuationdividebias;
3086 extern cvar_t r_shadow_lightattenuationlinearscale;
3087
3088 static void Mod_GenerateLightmaps_LightPoint(dp_model_t *model, const vec3_t pos, vec3_t ambient, vec3_t diffuse, vec3_t lightdir)
3089 {
3090         int i;
3091         int index;
3092         int result;
3093         float relativepoint[3];
3094         float color[3];
3095         float dir[3];
3096         float dist;
3097         float dist2;
3098         float intensity;
3099         float sample[5*3];
3100         float lightorigin[3];
3101         float lightradius;
3102         float lightradius2;
3103         float lightiradius;
3104         float lightcolor[3];
3105         trace_t trace;
3106         for (i = 0;i < 5*3;i++)
3107                 sample[i] = 0.0f;
3108         for (index = 0;;index++)
3109         {
3110                 result = R_Shadow_GetRTLightInfo(index, lightorigin, &lightradius, lightcolor);
3111                 if (result < 0)
3112                         break;
3113                 if (result == 0)
3114                         continue;
3115                 lightradius2 = lightradius * lightradius;
3116                 VectorSubtract(lightorigin, pos, relativepoint);
3117                 dist2 = VectorLength2(relativepoint);
3118                 if (dist2 >= lightradius2)
3119                         continue;
3120                 lightiradius = 1.0f / lightradius;
3121                 dist = sqrt(dist2) * lightiradius;
3122                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
3123                 if (intensity <= 0)
3124                         continue;
3125                 if (model && model->TraceLine)
3126                 {
3127                         model->TraceLine(model, NULL, NULL, &trace, pos, lightorigin, SUPERCONTENTS_VISBLOCKERMASK);
3128                         if (trace.fraction < 1)
3129                                 continue;
3130                 }
3131                 // scale down intensity to add to both ambient and diffuse
3132                 //intensity *= 0.5f;
3133                 VectorNormalize(relativepoint);
3134                 VectorScale(lightcolor, intensity, color);
3135                 VectorMA(sample    , 0.5f            , color, sample    );
3136                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
3137                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
3138                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
3139                 // calculate a weighted average light direction as well
3140                 intensity *= VectorLength(color);
3141                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
3142         }
3143         // calculate the direction we'll use to reduce the sample to a directional light source
3144         VectorCopy(sample + 12, dir);
3145         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3146         VectorNormalize(dir);
3147         // extract the diffuse color along the chosen direction and scale it
3148         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]);
3149         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]);
3150         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]);
3151         // subtract some of diffuse from ambient
3152         VectorMA(sample, -0.333f, diffuse, ambient);
3153         // store the normalized lightdir
3154         VectorCopy(dir, lightdir);
3155 }
3156
3157 static void Mod_GenerateLightmaps_CreateLights_ComputeSVBSP_InsertSurfaces(const dp_model_t *model, svbsp_t *svbsp, const float *mins, const float *maxs)
3158 {
3159         int surfaceindex;
3160         int triangleindex;
3161         const msurface_t *surface;
3162         const float *vertex3f = model->surfmesh.data_vertex3f;
3163         const int *element3i = model->surfmesh.data_element3i;
3164         const int *e;
3165         float v2[3][3];
3166         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->nummodelsurfaces;surfaceindex++, surface++)
3167         {
3168                 if (!BoxesOverlap(surface->mins, surface->maxs, mins, maxs))
3169                         continue;
3170                 if (surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW)
3171                         continue;
3172                 for (triangleindex = 0, e = element3i + 3*surface->num_firsttriangle;triangleindex < surface->num_triangles;triangleindex++, e += 3)
3173                 {
3174                         VectorCopy(vertex3f + 3*e[0], v2[0]);
3175                         VectorCopy(vertex3f + 3*e[1], v2[1]);
3176                         VectorCopy(vertex3f + 3*e[2], v2[2]);
3177                         SVBSP_AddPolygon(svbsp, 3, v2[0], true, NULL, NULL, 0);
3178                 }
3179         }
3180 }
3181
3182 static void Mod_GenerateLightmaps_CreateLights_ComputeSVBSP(dp_model_t *model, lightmaplight_t *lightinfo)
3183 {
3184         int maxnodes = 1<<14;
3185         svbsp_node_t *nodes;
3186         float origin[3];
3187         float mins[3];
3188         float maxs[3];
3189         svbsp_t svbsp;
3190         VectorSet(mins, lightinfo->origin[0] - lightinfo->radius, lightinfo->origin[1] - lightinfo->radius, lightinfo->origin[2] - lightinfo->radius);
3191         VectorSet(maxs, lightinfo->origin[0] + lightinfo->radius, lightinfo->origin[1] + lightinfo->radius, lightinfo->origin[2] + lightinfo->radius);
3192         VectorCopy(lightinfo->origin, origin);
3193         nodes = Mem_Alloc(tempmempool, maxnodes * sizeof(*nodes));
3194         for (;;)
3195         {
3196                 SVBSP_Init(&svbsp, origin, maxnodes, nodes);
3197                 Mod_GenerateLightmaps_CreateLights_ComputeSVBSP_InsertSurfaces(model, &svbsp, mins, maxs);
3198                 if (svbsp.ranoutofnodes)
3199                 {
3200                         maxnodes *= 2;
3201                         if (maxnodes >= 1<<22)
3202                         {
3203                                 Mem_Free(nodes);
3204                                 return;
3205                         }
3206                         Mem_Free(nodes);
3207                         nodes = Mem_Alloc(tempmempool, maxnodes * sizeof(*nodes));
3208                 }
3209                 else
3210                         break;
3211         }
3212         if (svbsp.numnodes > 0)
3213         {
3214                 svbsp.nodes = Mem_Alloc(tempmempool, svbsp.numnodes * sizeof(*nodes));
3215                 memcpy(svbsp.nodes, nodes, svbsp.numnodes * sizeof(*nodes));
3216                 lightinfo->svbsp = svbsp;
3217         }
3218         Mem_Free(nodes);
3219 }
3220
3221 static void Mod_GenerateLightmaps_CreateLights(dp_model_t *model)
3222 {
3223         int index;
3224         int result;
3225         lightmaplight_t *lightinfo;
3226         float origin[3];
3227         float radius;
3228         float color[3];
3229         mod_generatelightmaps_numlights = 0;
3230         for (index = 0;;index++)
3231         {
3232                 result = R_Shadow_GetRTLightInfo(index, origin, &radius, color);
3233                 if (result < 0)
3234                         break;
3235                 if (result > 0)
3236                         mod_generatelightmaps_numlights++;
3237         }
3238         if (mod_generatelightmaps_numlights > 0)
3239         {
3240                 mod_generatelightmaps_lightinfo = Mem_Alloc(tempmempool, mod_generatelightmaps_numlights * sizeof(*mod_generatelightmaps_lightinfo));
3241                 lightinfo = mod_generatelightmaps_lightinfo;
3242                 for (index = 0;;index++)
3243                 {
3244                         result = R_Shadow_GetRTLightInfo(index, lightinfo->origin, &lightinfo->radius, lightinfo->color);
3245                         if (result < 0)
3246                                 break;
3247                         if (result > 0)
3248                                 lightinfo++;
3249                 }
3250         }
3251         for (index = 0, lightinfo = mod_generatelightmaps_lightinfo;index < mod_generatelightmaps_numlights;index++, lightinfo++)
3252         {
3253                 lightinfo->iradius = 1.0f / lightinfo->radius;
3254                 lightinfo->radius2 = lightinfo->radius * lightinfo->radius;
3255                 // TODO: compute svbsp
3256                 Mod_GenerateLightmaps_CreateLights_ComputeSVBSP(model, lightinfo);
3257         }
3258 }
3259
3260 static void Mod_GenerateLightmaps_DestroyLights(dp_model_t *model)
3261 {
3262         int i;
3263         if (mod_generatelightmaps_lightinfo)
3264         {
3265                 for (i = 0;i < mod_generatelightmaps_numlights;i++)
3266                         if (mod_generatelightmaps_lightinfo[i].svbsp.nodes)
3267                                 Mem_Free(mod_generatelightmaps_lightinfo[i].svbsp.nodes);
3268                 Mem_Free(mod_generatelightmaps_lightinfo);
3269         }
3270         mod_generatelightmaps_lightinfo = NULL;
3271         mod_generatelightmaps_numlights = 0;
3272 }
3273
3274 static qboolean Mod_GenerateLightmaps_SamplePoint_SVBSP(const svbsp_t *svbsp, const float *pos)
3275 {
3276         const svbsp_node_t *node;
3277         const svbsp_node_t *nodes = svbsp->nodes;
3278         int num = 0;
3279         while (num >= 0)
3280         {
3281                 node = nodes + num;
3282                 num = node->children[DotProduct(node->plane, pos) < node->plane[3]];
3283         }
3284         return num == -1; // true if empty, false if solid (shadowed)
3285 }
3286
3287 static void Mod_GenerateLightmaps_SamplePoint(const float *pos, const float *normal, float *sample, int numoffsets, const float *offsets)
3288 {
3289         int i;
3290         float relativepoint[3];
3291         float color[3];
3292         float offsetpos[3];
3293         float dist;
3294         float dist2;
3295         float intensity;
3296         int offsetindex;
3297         int hits;
3298         int tests;
3299         const lightmaplight_t *lightinfo;
3300         trace_t trace;
3301         for (i = 0;i < 5*3;i++)
3302                 sample[i] = 0.0f;
3303         for (i = 0, lightinfo = mod_generatelightmaps_lightinfo;i < mod_generatelightmaps_numlights;i++, lightinfo++)
3304         {
3305                 //R_SampleRTLights(pos, sample, numoffsets, offsets);
3306                 VectorSubtract(lightinfo->origin, pos, relativepoint);
3307                 // don't accept light from behind a surface, it causes bad shading
3308                 if (normal && DotProduct(relativepoint, normal) <= 0)
3309                         continue;
3310                 dist2 = VectorLength2(relativepoint);
3311                 if (dist2 >= lightinfo->radius2)
3312                         continue;
3313                 dist = sqrt(dist2) * lightinfo->iradius;
3314                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
3315                 if (intensity <= 0)
3316                         continue;
3317                 if (cl.worldmodel && cl.worldmodel->TraceLine && numoffsets > 0)
3318                 {
3319                         hits = 0;
3320                         tests = 1;
3321                         if (Mod_GenerateLightmaps_SamplePoint_SVBSP(&lightinfo->svbsp, pos))
3322                                 hits++;
3323                         for (offsetindex = 1;offsetindex < numoffsets;offsetindex++)
3324                         {
3325                                 VectorAdd(pos, offsets + 3*offsetindex, offsetpos);
3326                                 if (!normal)
3327                                 {
3328                                         // for light grid we'd better check visibility of the offset point
3329                                         cl.worldmodel->TraceLine(cl.worldmodel, NULL, NULL, &trace, pos, offsetpos, SUPERCONTENTS_VISBLOCKERMASK);
3330                                         if (trace.fraction < 1)
3331                                                 VectorLerp(pos, trace.fraction, offsetpos, offsetpos);
3332                                 }
3333                                 tests++;
3334                                 if (Mod_GenerateLightmaps_SamplePoint_SVBSP(&lightinfo->svbsp, offsetpos))
3335                                         hits++;
3336                         }
3337                         if (!hits)
3338                                 continue;
3339                         // scale intensity according to how many rays succeeded
3340                         // we know one test is valid, half of the rest will fail...
3341                         //if (normal && tests > 1)
3342                         //      intensity *= (tests - 1.0f) / tests;
3343                         intensity *= (float)hits / tests;
3344                 }
3345                 // scale down intensity to add to both ambient and diffuse
3346                 //intensity *= 0.5f;
3347                 VectorNormalize(relativepoint);
3348                 VectorScale(lightinfo->color, intensity, color);
3349                 VectorMA(sample    , 0.5f            , color, sample    );
3350                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
3351                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
3352                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
3353                 // calculate a weighted average light direction as well
3354                 intensity *= VectorLength(color);
3355                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
3356         }
3357 }
3358
3359 static void Mod_GenerateLightmaps_LightmapSample(const float *pos, const float *normal, unsigned char *lm_bgr, unsigned char *lm_dir)
3360 {
3361         float sample[5*3];
3362         float color[3];
3363         float dir[3];
3364         float f;
3365         Mod_GenerateLightmaps_SamplePoint(pos, normal, sample, mod_generatelightmaps_numoffsets[0], mod_generatelightmaps_offsets[0][0]);
3366         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3367         VectorCopy(sample + 12, dir);
3368         VectorNormalize(dir);
3369         //VectorAdd(dir, normal, dir);
3370         //VectorNormalize(dir);
3371         f = DotProduct(dir, normal);
3372         f = max(0, f) * 255.0f;
3373         VectorScale(sample, f, color);
3374         //VectorCopy(normal, dir);
3375         VectorSet(dir, (dir[0]+1.0f)*127.5f, (dir[1]+1.0f)*127.5f, (dir[2]+1.0f)*127.5f);
3376         lm_bgr[0] = (unsigned char)bound(0.0f, color[2], 255.0f);
3377         lm_bgr[1] = (unsigned char)bound(0.0f, color[1], 255.0f);
3378         lm_bgr[2] = (unsigned char)bound(0.0f, color[0], 255.0f);
3379         lm_bgr[3] = 255;
3380         lm_dir[0] = (unsigned char)dir[2];
3381         lm_dir[1] = (unsigned char)dir[1];
3382         lm_dir[2] = (unsigned char)dir[0];
3383         lm_dir[3] = 255;
3384 }
3385
3386 static void Mod_GenerateLightmaps_VertexSample(const float *pos, const float *normal, float *vertex_color)
3387 {
3388         float sample[5*3];
3389         Mod_GenerateLightmaps_SamplePoint(pos, normal, sample, mod_generatelightmaps_numoffsets[1], mod_generatelightmaps_offsets[1][0]);
3390         VectorCopy(sample, vertex_color);
3391 }
3392
3393 static void Mod_GenerateLightmaps_GridSample(const float *pos, q3dlightgrid_t *s)
3394 {
3395         float sample[5*3];
3396         float ambient[3];
3397         float diffuse[3];
3398         float dir[3];
3399         Mod_GenerateLightmaps_SamplePoint(pos, NULL, sample, mod_generatelightmaps_numoffsets[2], mod_generatelightmaps_offsets[2][0]);
3400         // calculate the direction we'll use to reduce the sample to a directional light source
3401         VectorCopy(sample + 12, dir);
3402         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3403         VectorNormalize(dir);
3404         // extract the diffuse color along the chosen direction and scale it
3405         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]) * 127.5f;
3406         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]) * 127.5f;
3407         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]) * 127.5f;
3408         // scale the ambient from 0-2 to 0-255 and subtract some of diffuse
3409         VectorScale(sample, 127.5f, ambient);
3410         VectorMA(ambient, -0.333f, diffuse, ambient);
3411         // encode to the grid format
3412         s->ambientrgb[0] = (unsigned char)bound(0.0f, ambient[0], 255.0f);
3413         s->ambientrgb[1] = (unsigned char)bound(0.0f, ambient[1], 255.0f);
3414         s->ambientrgb[2] = (unsigned char)bound(0.0f, ambient[2], 255.0f);
3415         s->diffusergb[0] = (unsigned char)bound(0.0f, diffuse[0], 255.0f);
3416         s->diffusergb[1] = (unsigned char)bound(0.0f, diffuse[1], 255.0f);
3417         s->diffusergb[2] = (unsigned char)bound(0.0f, diffuse[2], 255.0f);
3418         if (dir[2] >= 0.99f) {s->diffusepitch = 0;s->diffuseyaw = 0;}
3419         else if (dir[2] <= -0.99f) {s->diffusepitch = 128;s->diffuseyaw = 0;}
3420         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));}
3421 }
3422
3423 static void Mod_GenerateLightmaps_InitSampleOffsets(dp_model_t *model)
3424 {
3425         float radius[3];
3426         float temp[3];
3427         int i, j;
3428         memset(mod_generatelightmaps_offsets, 0, sizeof(mod_generatelightmaps_offsets));
3429         mod_generatelightmaps_numoffsets[0] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_lightmapsamples.integer);
3430         mod_generatelightmaps_numoffsets[1] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_vertexsamples.integer);
3431         mod_generatelightmaps_numoffsets[2] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_gridsamples.integer);
3432         radius[0] = mod_generatelightmaps_lightmapradius.value;
3433         radius[1] = mod_generatelightmaps_vertexradius.value;
3434         radius[2] = mod_generatelightmaps_gridradius.value;
3435         for (i = 0;i < 3;i++)
3436         {
3437                 for (j = 1;j < mod_generatelightmaps_numoffsets[i];j++)
3438                 {
3439                         VectorRandom(temp);
3440                         VectorScale(temp, radius[i], mod_generatelightmaps_offsets[i][j]);
3441                 }
3442         }
3443 }
3444
3445 static void Mod_GenerateLightmaps_DestroyLightmaps(dp_model_t *model)
3446 {
3447         msurface_t *surface;
3448         int surfaceindex;
3449         int i;
3450         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3451         {
3452                 surface = model->data_surfaces + surfaceindex;
3453                 surface->lightmaptexture = NULL;
3454                 surface->deluxemaptexture = NULL;
3455         }
3456         if (model->brushq3.data_lightmaps)
3457         {
3458                 for (i = 0;i < model->brushq3.num_mergedlightmaps;i++)
3459                         if (model->brushq3.data_lightmaps[i])
3460                                 R_FreeTexture(model->brushq3.data_lightmaps[i]);
3461                 Mem_Free(model->brushq3.data_lightmaps);
3462                 model->brushq3.data_lightmaps = NULL;
3463         }
3464         if (model->brushq3.data_deluxemaps)
3465         {
3466                 for (i = 0;i < model->brushq3.num_mergedlightmaps;i++)
3467                         if (model->brushq3.data_deluxemaps[i])
3468                                 R_FreeTexture(model->brushq3.data_deluxemaps[i]);
3469                 Mem_Free(model->brushq3.data_deluxemaps);
3470                 model->brushq3.data_deluxemaps = NULL;
3471         }
3472 }
3473
3474 static void Mod_GenerateLightmaps_UnweldTriangles(dp_model_t *model)
3475 {
3476         msurface_t *surface;
3477         int surfaceindex;
3478         int vertexindex;
3479         int outvertexindex;
3480         int i;
3481         const int *e;
3482         surfmesh_t oldsurfmesh;
3483         size_t size;
3484         unsigned char *data;
3485         oldsurfmesh = model->surfmesh;
3486         model->surfmesh.num_triangles = oldsurfmesh.num_triangles;
3487         model->surfmesh.num_vertices = oldsurfmesh.num_triangles * 3;
3488         size = 0;
3489         size += model->surfmesh.num_vertices * sizeof(float[3]);
3490         size += model->surfmesh.num_vertices * sizeof(float[3]);
3491         size += model->surfmesh.num_vertices * sizeof(float[3]);
3492         size += model->surfmesh.num_vertices * sizeof(float[3]);
3493         size += model->surfmesh.num_vertices * sizeof(float[2]);
3494         size += model->surfmesh.num_vertices * sizeof(float[2]);
3495         size += model->surfmesh.num_vertices * sizeof(float[4]);
3496         data = (unsigned char *)Mem_Alloc(model->mempool, size);
3497         model->surfmesh.data_vertex3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3498         model->surfmesh.data_normal3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3499         model->surfmesh.data_svector3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3500         model->surfmesh.data_tvector3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3501         model->surfmesh.data_texcoordtexture2f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[2]);
3502         model->surfmesh.data_texcoordlightmap2f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[2]);
3503         model->surfmesh.data_lightmapcolor4f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[4]);
3504         if (model->surfmesh.num_vertices > 65536)
3505                 model->surfmesh.data_element3s = NULL;
3506
3507         if (model->surfmesh.vbo)
3508                 R_Mesh_DestroyBufferObject(model->surfmesh.vbo);
3509         model->surfmesh.vbo = 0;
3510         if (model->surfmesh.ebo3i)
3511                 R_Mesh_DestroyBufferObject(model->surfmesh.ebo3i);
3512         model->surfmesh.ebo3i = 0;
3513         if (model->surfmesh.ebo3s)
3514                 R_Mesh_DestroyBufferObject(model->surfmesh.ebo3s);
3515         model->surfmesh.ebo3s = 0;
3516
3517         // convert all triangles to unique vertex data
3518         outvertexindex = 0;
3519         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3520         {
3521                 surface = model->data_surfaces + surfaceindex;
3522                 surface->num_firstvertex = outvertexindex;
3523                 surface->num_vertices = surface->num_triangles*3;
3524                 e = oldsurfmesh.data_element3i + surface->num_firsttriangle*3;
3525                 for (i = 0;i < surface->num_triangles*3;i++)
3526                 {
3527                         vertexindex = e[i];
3528                         model->surfmesh.data_vertex3f[outvertexindex*3+0] = oldsurfmesh.data_vertex3f[vertexindex*3+0];
3529                         model->surfmesh.data_vertex3f[outvertexindex*3+1] = oldsurfmesh.data_vertex3f[vertexindex*3+1];
3530                         model->surfmesh.data_vertex3f[outvertexindex*3+2] = oldsurfmesh.data_vertex3f[vertexindex*3+2];
3531                         model->surfmesh.data_normal3f[outvertexindex*3+0] = oldsurfmesh.data_normal3f[vertexindex*3+0];
3532                         model->surfmesh.data_normal3f[outvertexindex*3+1] = oldsurfmesh.data_normal3f[vertexindex*3+1];
3533                         model->surfmesh.data_normal3f[outvertexindex*3+2] = oldsurfmesh.data_normal3f[vertexindex*3+2];
3534                         model->surfmesh.data_svector3f[outvertexindex*3+0] = oldsurfmesh.data_svector3f[vertexindex*3+0];
3535                         model->surfmesh.data_svector3f[outvertexindex*3+1] = oldsurfmesh.data_svector3f[vertexindex*3+1];
3536                         model->surfmesh.data_svector3f[outvertexindex*3+2] = oldsurfmesh.data_svector3f[vertexindex*3+2];
3537                         model->surfmesh.data_tvector3f[outvertexindex*3+0] = oldsurfmesh.data_tvector3f[vertexindex*3+0];
3538                         model->surfmesh.data_tvector3f[outvertexindex*3+1] = oldsurfmesh.data_tvector3f[vertexindex*3+1];
3539                         model->surfmesh.data_tvector3f[outvertexindex*3+2] = oldsurfmesh.data_tvector3f[vertexindex*3+2];
3540                         model->surfmesh.data_texcoordtexture2f[outvertexindex*2+0] = oldsurfmesh.data_texcoordtexture2f[vertexindex*2+0];
3541                         model->surfmesh.data_texcoordtexture2f[outvertexindex*2+1] = oldsurfmesh.data_texcoordtexture2f[vertexindex*2+1];
3542                         if (oldsurfmesh.data_texcoordlightmap2f)
3543                         {
3544                                 model->surfmesh.data_texcoordlightmap2f[outvertexindex*2+0] = oldsurfmesh.data_texcoordlightmap2f[vertexindex*2+0];
3545                                 model->surfmesh.data_texcoordlightmap2f[outvertexindex*2+1] = oldsurfmesh.data_texcoordlightmap2f[vertexindex*2+1];
3546                         }
3547                         if (oldsurfmesh.data_lightmapcolor4f)
3548                         {
3549                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+0] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+0];
3550                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+1] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+1];
3551                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+2] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+2];
3552                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+3] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+3];
3553                         }
3554                         else
3555                                 Vector4Set(model->surfmesh.data_lightmapcolor4f + 4*outvertexindex, 1, 1, 1, 1);
3556                         model->surfmesh.data_element3i[surface->num_firsttriangle*3+i] = outvertexindex;
3557                         outvertexindex++;
3558                 }
3559         }
3560         if (model->surfmesh.data_element3s)
3561                 for (i = 0;i < model->surfmesh.num_triangles*3;i++)
3562                         model->surfmesh.data_element3s[i] = model->surfmesh.data_element3i[i];
3563
3564         // find and update all submodels to use this new surfmesh data
3565         for (i = 0;i < model->brush.numsubmodels;i++)
3566                 model->brush.submodels[i]->surfmesh = model->surfmesh;
3567 }
3568
3569 static void Mod_GenerateLightmaps_CreateTriangleInformation(dp_model_t *model)
3570 {
3571         msurface_t *surface;
3572         int surfaceindex;
3573         int i;
3574         int axis;
3575         float normal[3];
3576         const int *e;
3577         lightmaptriangle_t *triangle;
3578         // generate lightmap triangle structs
3579         mod_generatelightmaps_lightmaptriangles = Mem_Alloc(model->mempool, model->surfmesh.num_triangles * sizeof(lightmaptriangle_t));
3580         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3581         {
3582                 surface = model->data_surfaces + surfaceindex;
3583                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3584                 for (i = 0;i < surface->num_triangles;i++)
3585                 {
3586                         triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3587                         triangle->triangleindex = surface->num_firsttriangle+i;
3588                         triangle->surfaceindex = surfaceindex;
3589                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+0], triangle->vertex[0]);
3590                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+1], triangle->vertex[1]);
3591                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+2], triangle->vertex[2]);
3592                         // calculate bounds of triangle
3593                         triangle->mins[0] = min(triangle->vertex[0][0], min(triangle->vertex[1][0], triangle->vertex[2][0]));
3594                         triangle->mins[1] = min(triangle->vertex[0][1], min(triangle->vertex[1][1], triangle->vertex[2][1]));
3595                         triangle->mins[2] = min(triangle->vertex[0][2], min(triangle->vertex[1][2], triangle->vertex[2][2]));
3596                         triangle->maxs[0] = max(triangle->vertex[0][0], max(triangle->vertex[1][0], triangle->vertex[2][0]));
3597                         triangle->maxs[1] = max(triangle->vertex[0][1], max(triangle->vertex[1][1], triangle->vertex[2][1]));
3598                         triangle->maxs[2] = max(triangle->vertex[0][2], max(triangle->vertex[1][2], triangle->vertex[2][2]));
3599                         // pick an axial projection based on the triangle normal
3600                         TriangleNormal(triangle->vertex[0], triangle->vertex[1], triangle->vertex[2], normal);
3601                         axis = 0;
3602                         if (fabs(normal[1]) > fabs(normal[axis]))
3603                                 axis = 1;
3604                         if (fabs(normal[2]) > fabs(normal[axis]))
3605                                 axis = 2;
3606                         triangle->axis = axis;
3607                 }
3608         }
3609 }
3610
3611 static void Mod_GenerateLightmaps_DestroyTriangleInformation(dp_model_t *model)
3612 {
3613         if (mod_generatelightmaps_lightmaptriangles)
3614                 Mem_Free(mod_generatelightmaps_lightmaptriangles);
3615         mod_generatelightmaps_lightmaptriangles = NULL;
3616 }
3617
3618 float lmaxis[3][3] = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}};
3619
3620 static void Mod_GenerateLightmaps_CreateLightmaps(dp_model_t *model)
3621 {
3622         msurface_t *surface;
3623         int surfaceindex;
3624         int lightmapindex;
3625         int lightmapnumber;
3626         int i;
3627         int j;
3628         int k;
3629         int x;
3630         int y;
3631         int axis;
3632         int axis1;
3633         int axis2;
3634         int retry;
3635         int pixeloffset;
3636         float trianglenormal[3];
3637         float samplecenter[3];
3638         float samplenormal[3];
3639         float temp[3];
3640         float lmiscale[2];
3641         float slopex;
3642         float slopey;
3643         float slopebase;
3644         float lmscalepixels;
3645         float lmmins;
3646         float lmmaxs;
3647         float lm_basescalepixels;
3648         int lm_borderpixels;
3649         int lm_texturesize;
3650         //int lm_maxpixels;
3651         const int *e;
3652         lightmaptriangle_t *triangle;
3653         unsigned char *lightmappixels;
3654         unsigned char *deluxemappixels;
3655         mod_alloclightmap_state_t lmstate;
3656
3657         // generate lightmap projection information for all triangles
3658         if (model->texturepool == NULL)
3659                 model->texturepool = R_AllocTexturePool();
3660         lm_basescalepixels = 1.0f / max(0.0001f, mod_generatelightmaps_unitspersample.value);
3661         lm_borderpixels = mod_generatelightmaps_borderpixels.integer;
3662         lm_texturesize = bound(lm_borderpixels*2+1, 64, (int)vid.maxtexturesize_2d);
3663         //lm_maxpixels = lm_texturesize-(lm_borderpixels*2+1);
3664         Mod_AllocLightmap_Init(&lmstate, lm_texturesize, lm_texturesize);
3665         lightmapnumber = 0;
3666         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3667         {
3668                 surface = model->data_surfaces + surfaceindex;
3669                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3670                 lmscalepixels = lm_basescalepixels;
3671                 for (retry = 0;retry < 30;retry++)
3672                 {
3673                         // after a couple failed attempts, degrade quality to make it fit
3674                         if (retry > 1)
3675                                 lmscalepixels *= 0.5f;
3676                         for (i = 0;i < surface->num_triangles;i++)
3677                         {
3678                                 triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3679                                 triangle->lightmapindex = lightmapnumber;
3680                                 // calculate lightmap bounds in 3D pixel coordinates, limit size,
3681                                 // pick two planar axes for projection
3682                                 // lightmap coordinates here are in pixels
3683                                 // lightmap projections are snapped to pixel grid explicitly, such
3684                                 // that two neighboring triangles sharing an edge and projection
3685                                 // axis will have identical sampl espacing along their shared edge
3686                                 k = 0;
3687                                 for (j = 0;j < 3;j++)
3688                                 {
3689                                         if (j == triangle->axis)
3690                                                 continue;
3691                                         lmmins = floor(triangle->mins[j]*lmscalepixels)-lm_borderpixels;
3692                                         lmmaxs = floor(triangle->maxs[j]*lmscalepixels)+lm_borderpixels;
3693                                         triangle->lmsize[k] = (int)(lmmaxs-lmmins);
3694                                         triangle->lmbase[k] = lmmins/lmscalepixels;
3695                                         triangle->lmscale[k] = lmscalepixels;
3696                                         k++;
3697                                 }
3698                                 if (!Mod_AllocLightmap_Block(&lmstate, triangle->lmsize[0], triangle->lmsize[1], &triangle->lmoffset[0], &triangle->lmoffset[1]))
3699                                         break;
3700                         }
3701                         // if all fit in this texture, we're done with this surface
3702                         if (i == surface->num_triangles)
3703                                 break;
3704                         // if we haven't maxed out the lightmap size yet, we retry the
3705                         // entire surface batch...
3706                         if (lm_texturesize * 2 <= min(mod_generatelightmaps_texturesize.integer, (int)vid.maxtexturesize_2d))
3707                         {
3708                                 lm_texturesize *= 2;
3709                                 surfaceindex = -1;
3710                                 lightmapnumber = 0;
3711                                 Mod_AllocLightmap_Free(&lmstate);
3712                                 Mod_AllocLightmap_Init(&lmstate, lm_texturesize, lm_texturesize);
3713                                 break;
3714                         }
3715                         // if we have maxed out the lightmap size, and this triangle does
3716                         // not fit in the same texture as the rest of the surface, we have
3717                         // to retry the entire surface in a new texture (can only use one)
3718                         // with multiple retries, the lightmap quality degrades until it
3719                         // fits (or gives up)
3720                         if (surfaceindex > 0)
3721                                 lightmapnumber++;
3722                         Mod_AllocLightmap_Reset(&lmstate);
3723                 }
3724         }
3725         lightmapnumber++;
3726         Mod_AllocLightmap_Free(&lmstate);
3727
3728         // now put triangles together into lightmap textures, and do not allow
3729         // triangles of a surface to go into different textures (as that would
3730         // require rewriting the surface list)
3731         model->brushq3.deluxemapping_modelspace = true;
3732         model->brushq3.deluxemapping = true;
3733         model->brushq3.num_mergedlightmaps = lightmapnumber;
3734         model->brushq3.data_lightmaps = Mem_Alloc(model->mempool, model->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
3735         model->brushq3.data_deluxemaps = Mem_Alloc(model->mempool, model->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
3736         lightmappixels = Mem_Alloc(tempmempool, model->brushq3.num_mergedlightmaps * lm_texturesize * lm_texturesize * 4);
3737         deluxemappixels = Mem_Alloc(tempmempool, model->brushq3.num_mergedlightmaps * lm_texturesize * lm_texturesize * 4);
3738         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3739         {
3740                 surface = model->data_surfaces + surfaceindex;
3741                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3742                 for (i = 0;i < surface->num_triangles;i++)
3743                 {
3744                         triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3745                         TriangleNormal(triangle->vertex[0], triangle->vertex[1], triangle->vertex[2], trianglenormal);
3746                         VectorNormalize(trianglenormal);
3747                         VectorCopy(trianglenormal, samplenormal); // FIXME: this is supposed to be interpolated per pixel from vertices
3748                         axis = triangle->axis;
3749                         axis1 = axis == 0 ? 1 : 0;
3750                         axis2 = axis == 2 ? 1 : 2;
3751                         lmiscale[0] = 1.0f / triangle->lmscale[0];
3752                         lmiscale[1] = 1.0f / triangle->lmscale[1];
3753                         if (trianglenormal[axis] < 0)
3754                                 VectorNegate(trianglenormal, trianglenormal);
3755                         CrossProduct(lmaxis[axis2], trianglenormal, temp);slopex = temp[axis] / temp[axis1];
3756                         CrossProduct(lmaxis[axis1], trianglenormal, temp);slopey = temp[axis] / temp[axis2];
3757                         slopebase = triangle->vertex[0][axis] - triangle->vertex[0][axis1]*slopex - triangle->vertex[0][axis2]*slopey;
3758                         for (j = 0;j < 3;j++)
3759                         {
3760                                 float *t2f = model->surfmesh.data_texcoordlightmap2f + e[i*3+j]*2;
3761                                 t2f[0] = ((triangle->vertex[j][axis1] - triangle->lmbase[0]) * triangle->lmscale[0] + triangle->lmoffset[0]) / lm_texturesize;
3762                                 t2f[1] = ((triangle->vertex[j][axis2] - triangle->lmbase[1]) * triangle->lmscale[1] + triangle->lmoffset[1]) / lm_texturesize;
3763 #if 0
3764                                 samplecenter[axis1] = (t2f[0]*lm_texturesize-triangle->lmoffset[0])*lmiscale[0] + triangle->lmbase[0];
3765                                 samplecenter[axis2] = (t2f[1]*lm_texturesize-triangle->lmoffset[1])*lmiscale[1] + triangle->lmbase[1];
3766                                 samplecenter[axis] = samplecenter[axis1]*slopex + samplecenter[axis2]*slopey + slopebase;
3767                                 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]);
3768 #endif
3769                         }
3770
3771 #if 0
3772                         switch (axis)
3773                         {
3774                         default:
3775                         case 0:
3776                                 forward[0] = 0;
3777                                 forward[1] = 1.0f / triangle->lmscale[0];
3778                                 forward[2] = 0;
3779                                 left[0] = 0;
3780                                 left[1] = 0;
3781                                 left[2] = 1.0f / triangle->lmscale[1];
3782                                 up[0] = 1.0f;
3783                                 up[1] = 0;
3784                                 up[2] = 0;
3785                                 origin[0] = 0;
3786                                 origin[1] = triangle->lmbase[0];
3787                                 origin[2] = triangle->lmbase[1];
3788                                 break;
3789                         case 1:
3790                                 forward[0] = 1.0f / triangle->lmscale[0];
3791                                 forward[1] = 0;
3792                                 forward[2] = 0;
3793                                 left[0] = 0;
3794                                 left[1] = 0;
3795                                 left[2] = 1.0f / triangle->lmscale[1];
3796                                 up[0] = 0;
3797                                 up[1] = 1.0f;
3798                                 up[2] = 0;
3799                                 origin[0] = triangle->lmbase[0];
3800                                 origin[1] = 0;
3801                                 origin[2] = triangle->lmbase[1];
3802                                 break;
3803                         case 2:
3804                                 forward[0] = 1.0f / triangle->lmscale[0];
3805                                 forward[1] = 0;
3806                                 forward[2] = 0;
3807                                 left[0] = 0;
3808                                 left[1] = 1.0f / triangle->lmscale[1];
3809                                 left[2] = 0;
3810                                 up[0] = 0;
3811                                 up[1] = 0;
3812                                 up[2] = 1.0f;
3813                                 origin[0] = triangle->lmbase[0];
3814                                 origin[1] = triangle->lmbase[1];
3815                                 origin[2] = 0;
3816                                 break;
3817                         }
3818                         Matrix4x4_FromVectors(&backmatrix, forward, left, up, origin);
3819 #endif
3820 #define LM_DIST_EPSILON (1.0f / 32.0f)
3821                         for (y = 0;y < triangle->lmsize[1];y++)
3822                         {
3823                                 pixeloffset = ((triangle->lightmapindex * lm_texturesize + y + triangle->lmoffset[1]) * lm_texturesize + triangle->lmoffset[0]) * 4;
3824                                 for (x = 0;x < triangle->lmsize[0];x++, pixeloffset += 4)
3825                                 {
3826                                         samplecenter[axis1] = (x+0.5f)*lmiscale[0] + triangle->lmbase[0];
3827                                         samplecenter[axis2] = (y+0.5f)*lmiscale[1] + triangle->lmbase[1];
3828                                         samplecenter[axis] = samplecenter[axis1]*slopex + samplecenter[axis2]*slopey + slopebase;
3829                                         VectorMA(samplecenter, 0.125f, samplenormal, samplecenter);
3830                                         Mod_GenerateLightmaps_LightmapSample(samplecenter, samplenormal, lightmappixels + pixeloffset, deluxemappixels + pixeloffset);
3831                                 }
3832                         }
3833                 }
3834         }
3835
3836         for (lightmapindex = 0;lightmapindex < model->brushq3.num_mergedlightmaps;lightmapindex++)
3837         {
3838                 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);
3839                 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);
3840         }
3841
3842         if (lightmappixels)
3843                 Mem_Free(lightmappixels);
3844         if (deluxemappixels)
3845                 Mem_Free(deluxemappixels);
3846
3847         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3848         {
3849                 surface = model->data_surfaces + surfaceindex;
3850                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3851                 if (!surface->num_triangles)
3852                         continue;
3853                 lightmapindex = mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle].lightmapindex;
3854                 surface->lightmaptexture = model->brushq3.data_lightmaps[lightmapindex];
3855                 surface->deluxemaptexture = model->brushq3.data_deluxemaps[lightmapindex];
3856                 surface->lightmapinfo = NULL;
3857         }
3858
3859         model->brush.LightPoint = Mod_GenerateLightmaps_LightPoint;
3860         model->brushq1.lightdata = NULL;
3861         model->brushq1.lightmapupdateflags = NULL;
3862         model->brushq1.firstrender = false;
3863         model->brushq1.num_lightstyles = 0;
3864         model->brushq1.data_lightstyleinfo = NULL;
3865         for (i = 0;i < model->brush.numsubmodels;i++)
3866         {
3867                 model->brush.submodels[i]->brushq1.lightmapupdateflags = NULL;
3868                 model->brush.submodels[i]->brushq1.firstrender = false;
3869                 model->brush.submodels[i]->brushq1.num_lightstyles = 0;
3870                 model->brush.submodels[i]->brushq1.data_lightstyleinfo = NULL;
3871         }
3872 }
3873
3874 static void Mod_GenerateLightmaps_UpdateVertexColors(dp_model_t *model)
3875 {
3876         int i;
3877         for (i = 0;i < model->surfmesh.num_vertices;i++)
3878                 Mod_GenerateLightmaps_VertexSample(model->surfmesh.data_vertex3f + 3*i, model->surfmesh.data_normal3f + 3*i, model->surfmesh.data_lightmapcolor4f + 4*i);
3879 }
3880
3881 static void Mod_GenerateLightmaps_UpdateLightGrid(dp_model_t *model)
3882 {
3883         int x;
3884         int y;
3885         int z;
3886         int index = 0;
3887         float pos[3];
3888         for (z = 0;z < model->brushq3.num_lightgrid_isize[2];z++)
3889         {
3890                 pos[2] = (model->brushq3.num_lightgrid_imins[2] + z + 0.5f) * model->brushq3.num_lightgrid_cellsize[2];
3891                 for (y = 0;y < model->brushq3.num_lightgrid_isize[1];y++)
3892                 {
3893                         pos[1] = (model->brushq3.num_lightgrid_imins[1] + y + 0.5f) * model->brushq3.num_lightgrid_cellsize[1];
3894                         for (x = 0;x < model->brushq3.num_lightgrid_isize[0];x++, index++)
3895                         {
3896                                 pos[0] = (model->brushq3.num_lightgrid_imins[0] + x + 0.5f) * model->brushq3.num_lightgrid_cellsize[0];
3897                                 Mod_GenerateLightmaps_GridSample(pos, model->brushq3.data_lightgrid + index);
3898                         }
3899                 }
3900         }
3901 }
3902
3903 extern cvar_t mod_q3bsp_nolightmaps;
3904 static void Mod_GenerateLightmaps(dp_model_t *model)
3905 {
3906         //lightmaptriangle_t *lightmaptriangles = Mem_Alloc(model->mempool, model->surfmesh.num_triangles * sizeof(lightmaptriangle_t));
3907         dp_model_t *oldloadmodel = loadmodel;
3908         loadmodel = model;
3909
3910         Mod_GenerateLightmaps_InitSampleOffsets(model);
3911         Mod_GenerateLightmaps_DestroyLightmaps(model);
3912         Mod_GenerateLightmaps_UnweldTriangles(model);
3913         Mod_GenerateLightmaps_CreateTriangleInformation(model);
3914         Mod_GenerateLightmaps_CreateLights(model);
3915         if(!mod_q3bsp_nolightmaps.integer)
3916                 Mod_GenerateLightmaps_CreateLightmaps(model);
3917         Mod_GenerateLightmaps_UpdateVertexColors(model);
3918         Mod_GenerateLightmaps_UpdateLightGrid(model);
3919         Mod_GenerateLightmaps_DestroyLights(model);
3920         Mod_GenerateLightmaps_DestroyTriangleInformation(model);
3921
3922         loadmodel = oldloadmodel;
3923 }
3924
3925 static void Mod_GenerateLightmaps_f(void)
3926 {
3927         if (Cmd_Argc() != 1)
3928         {
3929                 Con_Printf("usage: mod_generatelightmaps\n");
3930                 return;
3931         }
3932         if (!cl.worldmodel)
3933         {
3934                 Con_Printf("no worldmodel loaded\n");
3935                 return;
3936         }
3937         Mod_GenerateLightmaps(cl.worldmodel);
3938 }