model_shared.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // models.c -- model loading and caching
  21
  22 // models are the only shared resource between a client and server running
  23 // on the same machine.
  24
  25 #include "quakedef.h"
  26 #include "image.h"
  27 #include "r_shadow.h"
  28 #include "polygon.h"
  29
  30 cvar_t r_mipskins = {CVAR_SAVE, "r_mipskins", "0", "mipmaps model skins so they render faster in the distance and do not display noise artifacts, can cause discoloration of skins if they contain undesirable border colors"};
  31 cvar_t mod_generatelightmaps_unitspersample = {CVAR_SAVE, "mod_generatelightmaps_unitspersample", "8", "lightmap resolution"};
  32 cvar_t mod_generatelightmaps_borderpixels = {CVAR_SAVE, "mod_generatelightmaps_borderpixels", "2", "extra space around polygons to prevent sampling artifacts"};
  33 cvar_t mod_generatelightmaps_texturesize = {CVAR_SAVE, "mod_generatelightmaps_texturesize", "1024", "size of lightmap textures"};
  34 cvar_t mod_generatelightmaps_lightmapsamples = {CVAR_SAVE, "mod_generatelightmaps_lightmapsamples", "16", "number of shadow tests done per lightmap pixel"};
  35 cvar_t mod_generatelightmaps_vertexsamples = {CVAR_SAVE, "mod_generatelightmaps_vertexsamples", "16", "number of shadow tests done per vertex"};
  36 cvar_t mod_generatelightmaps_gridsamples = {CVAR_SAVE, "mod_generatelightmaps_gridsamples", "64", "number of shadow tests done per lightgrid cell"};
  37 cvar_t mod_generatelightmaps_lightmapradius = {CVAR_SAVE, "mod_generatelightmaps_lightmapradius", "16", "sampling area around each lightmap pixel"};
  38 cvar_t mod_generatelightmaps_vertexradius = {CVAR_SAVE, "mod_generatelightmaps_vertexradius", "16", "sampling area around each vertex"};
  39 cvar_t mod_generatelightmaps_gridradius = {CVAR_SAVE, "mod_generatelightmaps_gridradius", "64", "sampling area around each lightgrid cell center"};
  40
  41 dp_model_t *loadmodel;
  42
  43 static mempool_t *mod_mempool;
  44 static memexpandablearray_t models;
  45
  46 static mempool_t* q3shaders_mem;
  47 typedef struct q3shader_hash_entry_s
  48 {
  49   q3shaderinfo_t shader;
  50   struct q3shader_hash_entry_s* chain;
  51 } q3shader_hash_entry_t;
  52 #define Q3SHADER_HASH_SIZE  1021
  53 typedef struct q3shader_data_s
  54 {
  55   memexpandablearray_t hash_entries;
  56   q3shader_hash_entry_t hash[Q3SHADER_HASH_SIZE];
  57   memexpandablearray_t char_ptrs;
  58 } q3shader_data_t;
  59 static q3shader_data_t* q3shader_data;
  60
  61 static void mod_start(void)
  62 {
  63         int i, count;
  64         int nummodels = Mem_ExpandableArray_IndexRange(&models);
  65         dp_model_t *mod;
  66
  67         SCR_PushLoadingScreen(false, "Loading models", 1.0);
  68         count = 0;
  69         for (i = 0;i < nummodels;i++)
  70                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
  71                         if (mod->used)
  72                                 ++count;
  73         for (i = 0;i < nummodels;i++)
  74                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
  75                         if (mod->used)
  76                         {
  77                                 SCR_PushLoadingScreen(true, mod->name, 1.0 / count);
  78                                 Mod_LoadModel(mod, true, false);
  79                                 SCR_PopLoadingScreen(false);
  80                         }
  81         SCR_PopLoadingScreen(false);
  82 }
  83
  84 static void mod_shutdown(void)
  85 {
  86         int i;
  87         int nummodels = Mem_ExpandableArray_IndexRange(&models);
  88         dp_model_t *mod;
  89
  90         for (i = 0;i < nummodels;i++)
  91                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && (mod->loaded || mod->mempool))
  92                         Mod_UnloadModel(mod);
  93
  94         Mod_FreeQ3Shaders();
  95         Mod_Skeletal_FreeBuffers();
  96 }
  97
  98 static void mod_newmap(void)
  99 {
 100         msurface_t *surface;
 101         int i, j, k, surfacenum, ssize, tsize;
 102         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 103         dp_model_t *mod;
 104
 105         for (i = 0;i < nummodels;i++)
 106         {
 107                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool)
 108                 {
 109                         for (j = 0;j < mod->num_textures && mod->data_textures;j++)
 110                         {
 111                                 for (k = 0;k < mod->data_textures[j].numskinframes;k++)
 112                                         R_SkinFrame_MarkUsed(mod->data_textures[j].skinframes[k]);
 113                                 for (k = 0;k < mod->data_textures[j].backgroundnumskinframes;k++)
 114                                         R_SkinFrame_MarkUsed(mod->data_textures[j].backgroundskinframes[k]);
 115                         }
 116                         if (mod->brush.solidskyskinframe)
 117                                 R_SkinFrame_MarkUsed(mod->brush.solidskyskinframe);
 118                         if (mod->brush.alphaskyskinframe)
 119                                 R_SkinFrame_MarkUsed(mod->brush.alphaskyskinframe);
 120                 }
 121         }
 122
 123         if (!cl_stainmaps_clearonload.integer)
 124                 return;
 125
 126         for (i = 0;i < nummodels;i++)
 127         {
 128                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool && mod->data_surfaces)
 129                 {
 130                         for (surfacenum = 0, surface = mod->data_surfaces;surfacenum < mod->num_surfaces;surfacenum++, surface++)
 131                         {
 132                                 if (surface->lightmapinfo && surface->lightmapinfo->stainsamples)
 133                                 {
 134                                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
 135                                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
 136                                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
 137                                         mod->brushq1.lightmapupdateflags[surfacenum] = true;
 138                                 }
 139                         }
 140                 }
 141         }
 142 }
 143
 144 /*
 145 ===============
 146 Mod_Init
 147 ===============
 148 */
 149 static void Mod_Print(void);
 150 static void Mod_Precache (void);
 151 static void Mod_Decompile_f(void);
 152 static void Mod_GenerateLightmaps_f(void);
 153 void Mod_Init (void)
 154 {
 155         mod_mempool = Mem_AllocPool("modelinfo", 0, NULL);
 156         Mem_ExpandableArray_NewArray(&models, mod_mempool, sizeof(dp_model_t), 16);
 157
 158         Mod_BrushInit();
 159         Mod_AliasInit();
 160         Mod_SpriteInit();
 161
 162         Cvar_RegisterVariable(&r_mipskins);
 163         Cvar_RegisterVariable(&mod_generatelightmaps_unitspersample);
 164         Cvar_RegisterVariable(&mod_generatelightmaps_borderpixels);
 165         Cvar_RegisterVariable(&mod_generatelightmaps_texturesize);
 166
 167         Cvar_RegisterVariable(&mod_generatelightmaps_lightmapsamples);
 168         Cvar_RegisterVariable(&mod_generatelightmaps_vertexsamples);
 169         Cvar_RegisterVariable(&mod_generatelightmaps_gridsamples);
 170         Cvar_RegisterVariable(&mod_generatelightmaps_lightmapradius);
 171         Cvar_RegisterVariable(&mod_generatelightmaps_vertexradius);
 172         Cvar_RegisterVariable(&mod_generatelightmaps_gridradius);
 173
 174         Cmd_AddCommand ("modellist", Mod_Print, "prints a list of loaded models");
 175         Cmd_AddCommand ("modelprecache", Mod_Precache, "load a model");
 176         Cmd_AddCommand ("modeldecompile", Mod_Decompile_f, "exports a model in several formats for editing purposes");
 177         Cmd_AddCommand ("mod_generatelightmaps", Mod_GenerateLightmaps_f, "rebuilds lighting on current worldmodel");
 178 }
 179
 180 void Mod_RenderInit(void)
 181 {
 182         R_RegisterModule("Models", mod_start, mod_shutdown, mod_newmap);
 183 }
 184
 185 void Mod_UnloadModel (dp_model_t *mod)
 186 {
 187         char name[MAX_QPATH];
 188         qboolean used;
 189         dp_model_t *parentmodel;
 190
 191         if (developer_loading.integer)
 192                 Con_Printf("unloading model %s\n", mod->name);
 193
 194         strlcpy(name, mod->name, sizeof(name));
 195         parentmodel = mod->brush.parentmodel;
 196         used = mod->used;
 197         if (mod->surfmesh.ebo3i)
 198                 R_Mesh_DestroyBufferObject(mod->surfmesh.ebo3i);
 199         if (mod->surfmesh.ebo3s)
 200                 R_Mesh_DestroyBufferObject(mod->surfmesh.ebo3s);
 201         if (mod->surfmesh.vbo)
 202                 R_Mesh_DestroyBufferObject(mod->surfmesh.vbo);
 203         // free textures/memory attached to the model
 204         R_FreeTexturePool(&mod->texturepool);
 205         Mem_FreePool(&mod->mempool);
 206         // clear the struct to make it available
 207         memset(mod, 0, sizeof(dp_model_t));
 208         // restore the fields we want to preserve
 209         strlcpy(mod->name, name, sizeof(mod->name));
 210         mod->brush.parentmodel = parentmodel;
 211         mod->used = used;
 212         mod->loaded = false;
 213 }
 214
 215 void R_Model_Null_Draw(entity_render_t *ent)
 216 {
 217         return;
 218 }
 219
 220
 221 typedef void (*mod_framegroupify_parsegroups_t) (unsigned int i, int start, int len, float fps, qboolean loop, void *pass);
 222
 223 int Mod_FrameGroupify_ParseGroups(const char *buf, mod_framegroupify_parsegroups_t cb, void *pass)
 224 {
 225         const char *bufptr;
 226         int start, len;
 227         float fps;
 228         unsigned int i;
 229         qboolean loop;
 230
 231         bufptr = buf;
 232         i = 0;
 233         for(;;)
 234         {
 235                 // an anim scene!
 236                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 237                         break;
 238                 if (!strcmp(com_token, "\n"))
 239                         continue; // empty line
 240                 start = atoi(com_token);
 241                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 242                         break;
 243                 if (!strcmp(com_token, "\n"))
 244                 {
 245                         Con_Printf("framegroups file: missing number of frames\n");
 246                         continue;
 247                 }
 248                 len = atoi(com_token);
 249                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 250                         break;
 251                 // we default to looping as it's usually wanted, so to NOT loop you append a 0
 252                 if (strcmp(com_token, "\n"))
 253                 {
 254                         fps = atof(com_token);
 255                         if (!COM_ParseToken_Simple(&bufptr, true, false))
 256                                 break;
 257                         if (strcmp(com_token, "\n"))
 258                                 loop = atoi(com_token) != 0;
 259                         else
 260                                 loop = true;
 261                 }
 262                 else
 263                 {
 264                         fps = 20;
 265                         loop = true;
 266                 }
 267
 268                 if(cb)
 269                         cb(i, start, len, fps, loop, pass);
 270                 ++i;
 271         }
 272
 273         return i;
 274 }
 275
 276 void Mod_FrameGroupify_ParseGroups_Count (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 277 {
 278         unsigned int *cnt = (unsigned int *) pass;
 279         ++*cnt;
 280 }
 281
 282 void Mod_FrameGroupify_ParseGroups_Store (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 283 {
 284         dp_model_t *mod = (dp_model_t *) pass;
 285         animscene_t *anim = &mod->animscenes[i];
 286         dpsnprintf(anim->name, sizeof(anim[i].name), "groupified_%d", i);
 287         anim->firstframe = bound(0, start, mod->num_poses - 1);
 288         anim->framecount = bound(1, len, mod->num_poses - anim->firstframe);
 289         anim->framerate = max(1, fps);
 290         anim->loop = !!loop;
 291         //Con_Printf("frame group %d is %d %d %f %d\n", i, start, len, fps, loop);
 292 }
 293
 294 void Mod_FrameGroupify(dp_model_t *mod, const char *buf)
 295 {
 296         unsigned int cnt;
 297
 298         // 0. count
 299         cnt = Mod_FrameGroupify_ParseGroups(buf, NULL, NULL);
 300         if(!cnt)
 301         {
 302                 Con_Printf("no scene found in framegroups file, aborting\n");
 303                 return;
 304         }
 305         mod->numframes = cnt;
 306
 307         // 1. reallocate
 308         // (we do not free the previous animscenes, but model unloading will free the pool owning them, so it's okay)
 309         mod->animscenes = (animscene_t *) Mem_Alloc(mod->mempool, sizeof(animscene_t) * mod->numframes);
 310
 311         // 2. parse
 312         Mod_FrameGroupify_ParseGroups(buf, Mod_FrameGroupify_ParseGroups_Store, mod);
 313 }
 314
 315 void Mod_FindPotentialDeforms(dp_model_t *mod)
 316 {
 317         int i, j;
 318         texture_t *texture;
 319         mod->wantnormals = false;
 320         mod->wanttangents = false;
 321         for (i = 0;i < mod->num_textures;i++)
 322         {
 323                 texture = mod->data_textures + i;
 324                 if (texture->tcgen.tcgen == Q3TCGEN_ENVIRONMENT)
 325                         mod->wantnormals = true;
 326                 for (j = 0;j < Q3MAXDEFORMS;j++)
 327                 {
 328                         if (texture->deforms[j].deform == Q3DEFORM_AUTOSPRITE)
 329                         {
 330                                 mod->wanttangents = true;
 331                                 mod->wantnormals = true;
 332                                 break;
 333                         }
 334                         if (texture->deforms[j].deform != Q3DEFORM_NONE)
 335                                 mod->wantnormals = true;
 336                 }
 337         }
 338 }
 339
 340 /*
 341 ==================
 342 Mod_LoadModel
 343
 344 Loads a model
 345 ==================
 346 */
 347 dp_model_t *Mod_LoadModel(dp_model_t *mod, qboolean crash, qboolean checkdisk)
 348 {
 349         int num;
 350         unsigned int crc;
 351         void *buf;
 352         fs_offset_t filesize;
 353
 354         mod->used = true;
 355
 356         if (mod->name[0] == '*') // submodel
 357                 return mod;
 358
 359         if (!strcmp(mod->name, "null"))
 360         {
 361                 if(mod->loaded)
 362                         return mod;
 363
 364                 if (mod->loaded || mod->mempool)
 365                         Mod_UnloadModel(mod);
 366
 367                 if (developer_loading.integer)
 368                         Con_Printf("loading model %s\n", mod->name);
 369
 370                 mod->used = true;
 371                 mod->crc = (unsigned int)-1;
 372                 mod->loaded = false;
 373
 374                 VectorClear(mod->normalmins);
 375                 VectorClear(mod->normalmaxs);
 376                 VectorClear(mod->yawmins);
 377                 VectorClear(mod->yawmaxs);
 378                 VectorClear(mod->rotatedmins);
 379                 VectorClear(mod->rotatedmaxs);
 380
 381                 mod->modeldatatypestring = "null";
 382                 mod->type = mod_null;
 383                 mod->Draw = R_Model_Null_Draw;
 384                 mod->numframes = 2;
 385                 mod->numskins = 1;
 386
 387                 // no fatal errors occurred, so this model is ready to use.
 388                 mod->loaded = true;
 389
 390                 return mod;
 391         }
 392
 393         crc = 0;
 394         buf = NULL;
 395
 396         // even if the model is loaded it still may need reloading...
 397
 398         // if it is not loaded or checkdisk is true we need to calculate the crc
 399         if (!mod->loaded || checkdisk)
 400         {
 401                 if (checkdisk && mod->loaded)
 402                         Con_DPrintf("checking model %s\n", mod->name);
 403                 buf = FS_LoadFile (mod->name, tempmempool, false, &filesize);
 404                 if (buf)
 405                 {
 406                         crc = CRC_Block((unsigned char *)buf, filesize);
 407                         // we need to reload the model if the crc does not match
 408                         if (mod->crc != crc)
 409                                 mod->loaded = false;
 410                 }
 411         }
 412
 413         // if the model is already loaded and checks passed, just return
 414         if (mod->loaded)
 415         {
 416                 if (buf)
 417                         Mem_Free(buf);
 418                 return mod;
 419         }
 420
 421         if (developer_loading.integer)
 422                 Con_Printf("loading model %s\n", mod->name);
 423
 424         SCR_PushLoadingScreen(true, mod->name, 1);
 425
 426         // LordHavoc: unload the existing model in this slot (if there is one)
 427         if (mod->loaded || mod->mempool)
 428                 Mod_UnloadModel(mod);
 429
 430         // load the model
 431         mod->used = true;
 432         mod->crc = crc;
 433         // errors can prevent the corresponding mod->loaded = true;
 434         mod->loaded = false;
 435
 436         // default model radius and bounding box (mainly for missing models)
 437         mod->radius = 16;
 438         VectorSet(mod->normalmins, -mod->radius, -mod->radius, -mod->radius);
 439         VectorSet(mod->normalmaxs, mod->radius, mod->radius, mod->radius);
 440         VectorSet(mod->yawmins, -mod->radius, -mod->radius, -mod->radius);
 441         VectorSet(mod->yawmaxs, mod->radius, mod->radius, mod->radius);
 442         VectorSet(mod->rotatedmins, -mod->radius, -mod->radius, -mod->radius);
 443         VectorSet(mod->rotatedmaxs, mod->radius, mod->radius, mod->radius);
 444
 445         if (!q3shaders_mem)
 446         {
 447                 // load q3 shaders for the first time, or after a level change
 448                 Mod_LoadQ3Shaders();
 449         }
 450
 451         if (buf)
 452         {
 453                 char *bufend = (char *)buf + filesize;
 454
 455                 // all models use memory, so allocate a memory pool
 456                 mod->mempool = Mem_AllocPool(mod->name, 0, NULL);
 457
 458                 num = LittleLong(*((int *)buf));
 459                 // call the apropriate loader
 460                 loadmodel = mod;
 461                      if (!strcasecmp(FS_FileExtension(mod->name), "obj")) Mod_OBJ_Load(mod, buf, bufend);
 462                 else if (!memcmp(buf, "IDPO", 4)) Mod_IDP0_Load(mod, buf, bufend);
 463                 else if (!memcmp(buf, "IDP2", 4)) Mod_IDP2_Load(mod, buf, bufend);
 464                 else if (!memcmp(buf, "IDP3", 4)) Mod_IDP3_Load(mod, buf, bufend);
 465                 else if (!memcmp(buf, "IDSP", 4)) Mod_IDSP_Load(mod, buf, bufend);
 466                 else if (!memcmp(buf, "IDS2", 4)) Mod_IDS2_Load(mod, buf, bufend);
 467                 else if (!memcmp(buf, "IBSP", 4)) Mod_IBSP_Load(mod, buf, bufend);
 468                 else if (!memcmp(buf, "ZYMOTICMODEL", 12)) Mod_ZYMOTICMODEL_Load(mod, buf, bufend);
 469                 else if (!memcmp(buf, "DARKPLACESMODEL", 16)) Mod_DARKPLACESMODEL_Load(mod, buf, bufend);
 470                 else if (!memcmp(buf, "ACTRHEAD", 8)) Mod_PSKMODEL_Load(mod, buf, bufend);
 471                 else if (strlen(mod->name) >= 4 && !strcmp(mod->name + strlen(mod->name) - 4, ".map")) Mod_MAP_Load(mod, buf, bufend);
 472                 else if (num == BSPVERSION || num == 30) Mod_Q1BSP_Load(mod, buf, bufend);
 473                 else Con_Printf("Mod_LoadModel: model \"%s\" is of unknown/unsupported type\n", mod->name);
 474                 Mem_Free(buf);
 475
 476                 Mod_FindPotentialDeforms(mod);
 477
 478                 buf = FS_LoadFile (va("%s.framegroups", mod->name), tempmempool, false, &filesize);
 479                 if(buf)
 480                 {
 481                         Mod_FrameGroupify(mod, (const char *)buf);
 482                         Mem_Free(buf);
 483                 }
 484
 485                 Mod_BuildVBOs();
 486         }
 487         else if (crash)
 488         {
 489                 // LordHavoc: Sys_Error was *ANNOYING*
 490                 Con_Printf ("Mod_LoadModel: %s not found\n", mod->name);
 491         }
 492
 493         // no fatal errors occurred, so this model is ready to use.
 494         mod->loaded = true;
 495
 496         SCR_PopLoadingScreen(false);
 497
 498         return mod;
 499 }
 500
 501 void Mod_ClearUsed(void)
 502 {
 503         int i;
 504         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 505         dp_model_t *mod;
 506         for (i = 0;i < nummodels;i++)
 507                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0])
 508                         mod->used = false;
 509 }
 510
 511 void Mod_PurgeUnused(void)
 512 {
 513         int i;
 514         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 515         dp_model_t *mod;
 516         for (i = 0;i < nummodels;i++)
 517         {
 518                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && !mod->used)
 519                 {
 520                         Mod_UnloadModel(mod);
 521                         Mem_ExpandableArray_FreeRecord(&models, mod);
 522                 }
 523         }
 524 }
 525
 526 /*
 527 ==================
 528 Mod_FindName
 529
 530 ==================
 531 */
 532 dp_model_t *Mod_FindName(const char *name, const char *parentname)
 533 {
 534         int i;
 535         int nummodels;
 536         dp_model_t *mod;
 537
 538         if (!parentname)
 539                 parentname = "";
 540
 541         // if we're not dedicatd, the renderer calls will crash without video
 542         Host_StartVideo();
 543
 544         nummodels = Mem_ExpandableArray_IndexRange(&models);
 545
 546         if (!name[0])
 547                 Host_Error ("Mod_ForName: NULL name");
 548
 549         // search the currently loaded models
 550         for (i = 0;i < nummodels;i++)
 551         {
 552                 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))))
 553                 {
 554                         mod->used = true;
 555                         return mod;
 556                 }
 557         }
 558
 559         // no match found, create a new one
 560         mod = (dp_model_t *) Mem_ExpandableArray_AllocRecord(&models);
 561         strlcpy(mod->name, name, sizeof(mod->name));
 562         if (parentname[0])
 563                 mod->brush.parentmodel = Mod_FindName(parentname, NULL);
 564         else
 565                 mod->brush.parentmodel = NULL;
 566         mod->loaded = false;
 567         mod->used = true;
 568         return mod;
 569 }
 570
 571 /*
 572 ==================
 573 Mod_ForName
 574
 575 Loads in a model for the given name
 576 ==================
 577 */
 578 dp_model_t *Mod_ForName(const char *name, qboolean crash, qboolean checkdisk, const char *parentname)
 579 {
 580         dp_model_t *model;
 581         model = Mod_FindName(name, parentname);
 582         if (!model->loaded || checkdisk)
 583                 Mod_LoadModel(model, crash, checkdisk);
 584         return model;
 585 }
 586
 587 /*
 588 ==================
 589 Mod_Reload
 590
 591 Reloads all models if they have changed
 592 ==================
 593 */
 594 void Mod_Reload(void)
 595 {
 596         int i, count;
 597         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 598         dp_model_t *mod;
 599
 600         SCR_PushLoadingScreen(false, "Reloading models", 1.0);
 601         count = 0;
 602         for (i = 0;i < nummodels;i++)
 603                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 604                         ++count;
 605         for (i = 0;i < nummodels;i++)
 606                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 607                 {
 608                         SCR_PushLoadingScreen(true, mod->name, 1.0 / count);
 609                         Mod_LoadModel(mod, true, true);
 610                         SCR_PopLoadingScreen(false);
 611                 }
 612         SCR_PopLoadingScreen(false);
 613 }
 614
 615 unsigned char *mod_base;
 616
 617
 618 //=============================================================================
 619
 620 /*
 621 ================
 622 Mod_Print
 623 ================
 624 */
 625 static void Mod_Print(void)
 626 {
 627         int i;
 628         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 629         dp_model_t *mod;
 630
 631         Con_Print("Loaded models:\n");
 632         for (i = 0;i < nummodels;i++)
 633         {
 634                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
 635                 {
 636                         if (mod->brush.numsubmodels)
 637                                 Con_Printf("%4iK %s (%i submodels)\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name, mod->brush.numsubmodels);
 638                         else
 639                                 Con_Printf("%4iK %s\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name);
 640                 }
 641         }
 642 }
 643
 644 /*
 645 ================
 646 Mod_Precache
 647 ================
 648 */
 649 static void Mod_Precache(void)
 650 {
 651         if (Cmd_Argc() == 2)
 652                 Mod_ForName(Cmd_Argv(1), false, true, Cmd_Argv(1)[0] == '*' ? cl.model_name[1] : NULL);
 653         else
 654                 Con_Print("usage: modelprecache <filename>\n");
 655 }
 656
 657 int Mod_BuildVertexRemapTableFromElements(int numelements, const int *elements, int numvertices, int *remapvertices)
 658 {
 659         int i, count;
 660         unsigned char *used;
 661         used = (unsigned char *)Mem_Alloc(tempmempool, numvertices);
 662         memset(used, 0, numvertices);
 663         for (i = 0;i < numelements;i++)
 664                 used[elements[i]] = 1;
 665         for (i = 0, count = 0;i < numvertices;i++)
 666                 remapvertices[i] = used[i] ? count++ : -1;
 667         Mem_Free(used);
 668         return count;
 669 }
 670
 671 #if 1
 672 // fast way, using an edge hash
 673 #define TRIANGLEEDGEHASH 8192
 674 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 675 {
 676         int i, j, p, e1, e2, *n, hashindex, count, match;
 677         const int *e;
 678         typedef struct edgehashentry_s
 679         {
 680                 struct edgehashentry_s *next;
 681                 int triangle;
 682                 int element[2];
 683         }
 684         edgehashentry_t;
 685         static edgehashentry_t **edgehash;
 686         edgehashentry_t *edgehashentries, *hash;
 687         if (!numtriangles)
 688                 return;
 689         edgehash = Mem_Alloc(tempmempool, TRIANGLEEDGEHASH * sizeof(*edgehash));
 690         // if there are too many triangles for the stack array, allocate larger buffer
 691         edgehashentries = (edgehashentry_t *)Mem_Alloc(tempmempool, numtriangles * 3 * sizeof(edgehashentry_t));
 692         // find neighboring triangles
 693         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 694         {
 695                 for (j = 0, p = 2;j < 3;p = j, j++)
 696                 {
 697                         e1 = e[p];
 698                         e2 = e[j];
 699                         // this hash index works for both forward and backward edges
 700                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 701                         hash = edgehashentries + i * 3 + j;
 702                         hash->next = edgehash[hashindex];
 703                         edgehash[hashindex] = hash;
 704                         hash->triangle = i;
 705                         hash->element[0] = e1;
 706                         hash->element[1] = e2;
 707                 }
 708         }
 709         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 710         {
 711                 for (j = 0, p = 2;j < 3;p = j, j++)
 712                 {
 713                         e1 = e[p];
 714                         e2 = e[j];
 715                         // this hash index works for both forward and backward edges
 716                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 717                         count = 0;
 718                         match = -1;
 719                         for (hash = edgehash[hashindex];hash;hash = hash->next)
 720                         {
 721                                 if (hash->element[0] == e2 && hash->element[1] == e1)
 722                                 {
 723                                         if (hash->triangle != i)
 724                                                 match = hash->triangle;
 725                                         count++;
 726                                 }
 727                                 else if ((hash->element[0] == e1 && hash->element[1] == e2))
 728                                         count++;
 729                         }
 730                         // detect edges shared by three triangles and make them seams
 731                         if (count > 2)
 732                                 match = -1;
 733                         n[p] = match;
 734                 }
 735
 736                 // also send a keepalive here (this can take a while too!)
 737                 CL_KeepaliveMessage(false);
 738         }
 739         // free the allocated buffer
 740         Mem_Free(edgehashentries);
 741         Mem_Free(edgehash);
 742 }
 743 #else
 744 // very slow but simple way
 745 static int Mod_FindTriangleWithEdge(const int *elements, int numtriangles, int start, int end, int ignore)
 746 {
 747         int i, match, count;
 748         count = 0;
 749         match = -1;
 750         for (i = 0;i < numtriangles;i++, elements += 3)
 751         {
 752                      if ((elements[0] == start && elements[1] == end)
 753                       || (elements[1] == start && elements[2] == end)
 754                       || (elements[2] == start && elements[0] == end))
 755                 {
 756                         if (i != ignore)
 757                                 match = i;
 758                         count++;
 759                 }
 760                 else if ((elements[1] == start && elements[0] == end)
 761                       || (elements[2] == start && elements[1] == end)
 762                       || (elements[0] == start && elements[2] == end))
 763                         count++;
 764         }
 765         // detect edges shared by three triangles and make them seams
 766         if (count > 2)
 767                 match = -1;
 768         return match;
 769 }
 770
 771 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 772 {
 773         int i, *n;
 774         const int *e;
 775         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 776         {
 777                 n[0] = Mod_FindTriangleWithEdge(elements, numtriangles, e[1], e[0], i);
 778                 n[1] = Mod_FindTriangleWithEdge(elements, numtriangles, e[2], e[1], i);
 779                 n[2] = Mod_FindTriangleWithEdge(elements, numtriangles, e[0], e[2], i);
 780         }
 781 }
 782 #endif
 783
 784 void Mod_ValidateElements(int *elements, int numtriangles, int firstvertex, int numverts, const char *filename, int fileline)
 785 {
 786         int i, warned = false, endvertex = firstvertex + numverts;
 787         for (i = 0;i < numtriangles * 3;i++)
 788         {
 789                 if (elements[i] < firstvertex || elements[i] >= endvertex)
 790                 {
 791                         if (!warned)
 792                         {
 793                                 warned = true;
 794                                 Con_Printf("Mod_ValidateElements: out of bounds elements detected at %s:%d\n", filename, fileline);
 795                         }
 796                         elements[i] = firstvertex;
 797                 }
 798         }
 799 }
 800
 801 // warning: this is an expensive function!
 802 void Mod_BuildNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const int *elements, float *normal3f, qboolean areaweighting)
 803 {
 804         int i, j;
 805         const int *element;
 806         float *vectorNormal;
 807         float areaNormal[3];
 808         // clear the vectors
 809         memset(normal3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 810         // process each vertex of each triangle and accumulate the results
 811         // use area-averaging, to make triangles with a big area have a bigger
 812         // weighting on the vertex normal than triangles with a small area
 813         // to do so, just add the 'normals' together (the bigger the area
 814         // the greater the length of the normal is
 815         element = elements;
 816         for (i = 0; i < numtriangles; i++, element += 3)
 817         {
 818                 TriangleNormal(
 819                         vertex3f + element[0] * 3,
 820                         vertex3f + element[1] * 3,
 821                         vertex3f + element[2] * 3,
 822                         areaNormal
 823                         );
 824
 825                 if (!areaweighting)
 826                         VectorNormalize(areaNormal);
 827
 828                 for (j = 0;j < 3;j++)
 829                 {
 830                         vectorNormal = normal3f + element[j] * 3;
 831                         vectorNormal[0] += areaNormal[0];
 832                         vectorNormal[1] += areaNormal[1];
 833                         vectorNormal[2] += areaNormal[2];
 834                 }
 835         }
 836         // and just normalize the accumulated vertex normal in the end
 837         vectorNormal = normal3f + 3 * firstvertex;
 838         for (i = 0; i < numvertices; i++, vectorNormal += 3)
 839                 VectorNormalize(vectorNormal);
 840 }
 841
 842 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)
 843 {
 844         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 845         // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 846         // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 847
 848         // 6 multiply, 9 subtract
 849         VectorSubtract(v1, v0, v10);
 850         VectorSubtract(v2, v0, v20);
 851         normal3f[0] = v20[1] * v10[2] - v20[2] * v10[1];
 852         normal3f[1] = v20[2] * v10[0] - v20[0] * v10[2];
 853         normal3f[2] = v20[0] * v10[1] - v20[1] * v10[0];
 854         // 12 multiply, 10 subtract
 855         tc10[1] = tc1[1] - tc0[1];
 856         tc20[1] = tc2[1] - tc0[1];
 857         svector3f[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 858         svector3f[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 859         svector3f[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 860         tc10[0] = tc1[0] - tc0[0];
 861         tc20[0] = tc2[0] - tc0[0];
 862         tvector3f[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 863         tvector3f[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 864         tvector3f[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 865         // 12 multiply, 4 add, 6 subtract
 866         f = DotProduct(svector3f, normal3f);
 867         svector3f[0] -= f * normal3f[0];
 868         svector3f[1] -= f * normal3f[1];
 869         svector3f[2] -= f * normal3f[2];
 870         f = DotProduct(tvector3f, normal3f);
 871         tvector3f[0] -= f * normal3f[0];
 872         tvector3f[1] -= f * normal3f[1];
 873         tvector3f[2] -= f * normal3f[2];
 874         // if texture is mapped the wrong way (counterclockwise), the tangents
 875         // have to be flipped, this is detected by calculating a normal from the
 876         // two tangents, and seeing if it is opposite the surface normal
 877         // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 878         CrossProduct(tvector3f, svector3f, tangentcross);
 879         if (DotProduct(tangentcross, normal3f) < 0)
 880         {
 881                 VectorNegate(svector3f, svector3f);
 882                 VectorNegate(tvector3f, tvector3f);
 883         }
 884 }
 885
 886 // warning: this is a very expensive function!
 887 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)
 888 {
 889         int i, tnum;
 890         float sdir[3], tdir[3], normal[3], *sv, *tv;
 891         const float *v0, *v1, *v2, *tc0, *tc1, *tc2, *n;
 892         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 893         const int *e;
 894         // clear the vectors
 895         memset(svector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 896         memset(tvector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 897         // process each vertex of each triangle and accumulate the results
 898         for (tnum = 0, e = elements;tnum < numtriangles;tnum++, e += 3)
 899         {
 900                 v0 = vertex3f + e[0] * 3;
 901                 v1 = vertex3f + e[1] * 3;
 902                 v2 = vertex3f + e[2] * 3;
 903                 tc0 = texcoord2f + e[0] * 2;
 904                 tc1 = texcoord2f + e[1] * 2;
 905                 tc2 = texcoord2f + e[2] * 2;
 906
 907                 // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 908                 // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 909
 910                 // calculate the edge directions and surface normal
 911                 // 6 multiply, 9 subtract
 912                 VectorSubtract(v1, v0, v10);
 913                 VectorSubtract(v2, v0, v20);
 914                 normal[0] = v20[1] * v10[2] - v20[2] * v10[1];
 915                 normal[1] = v20[2] * v10[0] - v20[0] * v10[2];
 916                 normal[2] = v20[0] * v10[1] - v20[1] * v10[0];
 917
 918                 // calculate the tangents
 919                 // 12 multiply, 10 subtract
 920                 tc10[1] = tc1[1] - tc0[1];
 921                 tc20[1] = tc2[1] - tc0[1];
 922                 sdir[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 923                 sdir[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 924                 sdir[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 925                 tc10[0] = tc1[0] - tc0[0];
 926                 tc20[0] = tc2[0] - tc0[0];
 927                 tdir[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 928                 tdir[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 929                 tdir[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 930
 931                 // if texture is mapped the wrong way (counterclockwise), the tangents
 932                 // have to be flipped, this is detected by calculating a normal from the
 933                 // two tangents, and seeing if it is opposite the surface normal
 934                 // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 935                 CrossProduct(tdir, sdir, tangentcross);
 936                 if (DotProduct(tangentcross, normal) < 0)
 937                 {
 938                         VectorNegate(sdir, sdir);
 939                         VectorNegate(tdir, tdir);
 940                 }
 941
 942                 if (!areaweighting)
 943                 {
 944                         VectorNormalize(sdir);
 945                         VectorNormalize(tdir);
 946                 }
 947                 for (i = 0;i < 3;i++)
 948                 {
 949                         VectorAdd(svector3f + e[i]*3, sdir, svector3f + e[i]*3);
 950                         VectorAdd(tvector3f + e[i]*3, tdir, tvector3f + e[i]*3);
 951                 }
 952         }
 953         // make the tangents completely perpendicular to the surface normal, and
 954         // then normalize them
 955         // 16 assignments, 2 divide, 2 sqrt, 2 negates, 14 adds, 24 multiplies
 956         for (i = 0, sv = svector3f + 3 * firstvertex, tv = tvector3f + 3 * firstvertex, n = normal3f + 3 * firstvertex;i < numvertices;i++, sv += 3, tv += 3, n += 3)
 957         {
 958                 f = -DotProduct(sv, n);
 959                 VectorMA(sv, f, n, sv);
 960                 VectorNormalize(sv);
 961                 f = -DotProduct(tv, n);
 962                 VectorMA(tv, f, n, tv);
 963                 VectorNormalize(tv);
 964         }
 965 }
 966
 967 void Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriangles, qboolean lightmapoffsets, qboolean vertexcolors, qboolean neighbors)
 968 {
 969         unsigned char *data;
 970         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));
 971         loadmodel->surfmesh.num_vertices = numvertices;
 972         loadmodel->surfmesh.num_triangles = numtriangles;
 973         if (loadmodel->surfmesh.num_vertices)
 974         {
 975                 loadmodel->surfmesh.data_vertex3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 976                 loadmodel->surfmesh.data_svector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 977                 loadmodel->surfmesh.data_tvector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 978                 loadmodel->surfmesh.data_normal3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 979                 loadmodel->surfmesh.data_texcoordtexture2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 980                 loadmodel->surfmesh.data_texcoordlightmap2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 981                 if (vertexcolors)
 982                         loadmodel->surfmesh.data_lightmapcolor4f = (float *)data, data += sizeof(float[4]) * loadmodel->surfmesh.num_vertices;
 983                 if (lightmapoffsets)
 984                         loadmodel->surfmesh.data_lightmapoffsets = (int *)data, data += sizeof(int) * loadmodel->surfmesh.num_vertices;
 985         }
 986         if (loadmodel->surfmesh.num_triangles)
 987         {
 988                 loadmodel->surfmesh.data_element3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 989                 if (neighbors)
 990                         loadmodel->surfmesh.data_neighbor3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 991                 if (loadmodel->surfmesh.num_vertices <= 65536)
 992                         loadmodel->surfmesh.data_element3s = (unsigned short *)data, data += sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles;
 993         }
 994 }
 995
 996 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)
 997 {
 998         shadowmesh_t *newmesh;
 999         unsigned char *data;
1000         int size;
1001         size = sizeof(shadowmesh_t);
1002         size += maxverts * sizeof(float[3]);
1003         if (light)
1004                 size += maxverts * sizeof(float[11]);
1005         size += maxtriangles * sizeof(int[3]);
1006         if (maxverts <= 65536)
1007                 size += maxtriangles * sizeof(unsigned short[3]);
1008         if (neighbors)
1009                 size += maxtriangles * sizeof(int[3]);
1010         if (expandable)
1011                 size += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *) + maxverts * sizeof(shadowmeshvertexhash_t);
1012         data = (unsigned char *)Mem_Alloc(mempool, size);
1013         newmesh = (shadowmesh_t *)data;data += sizeof(*newmesh);
1014         newmesh->map_diffuse = map_diffuse;
1015         newmesh->map_specular = map_specular;
1016         newmesh->map_normal = map_normal;
1017         newmesh->maxverts = maxverts;
1018         newmesh->maxtriangles = maxtriangles;
1019         newmesh->numverts = 0;
1020         newmesh->numtriangles = 0;
1021         memset(newmesh->sideoffsets, 0, sizeof(newmesh->sideoffsets));
1022         memset(newmesh->sidetotals, 0, sizeof(newmesh->sidetotals));
1023
1024         newmesh->vertex3f = (float *)data;data += maxverts * sizeof(float[3]);
1025         if (light)
1026         {
1027                 newmesh->svector3f = (float *)data;data += maxverts * sizeof(float[3]);
1028                 newmesh->tvector3f = (float *)data;data += maxverts * sizeof(float[3]);
1029                 newmesh->normal3f = (float *)data;data += maxverts * sizeof(float[3]);
1030                 newmesh->texcoord2f = (float *)data;data += maxverts * sizeof(float[2]);
1031         }
1032         newmesh->element3i = (int *)data;data += maxtriangles * sizeof(int[3]);
1033         if (neighbors)
1034         {
1035                 newmesh->neighbor3i = (int *)data;data += maxtriangles * sizeof(int[3]);
1036         }
1037         if (expandable)
1038         {
1039                 newmesh->vertexhashtable = (shadowmeshvertexhash_t **)data;data += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *);
1040                 newmesh->vertexhashentries = (shadowmeshvertexhash_t *)data;data += maxverts * sizeof(shadowmeshvertexhash_t);
1041         }
1042         if (maxverts <= 65536)
1043                 newmesh->element3s = (unsigned short *)data;data += maxtriangles * sizeof(unsigned short[3]);
1044         return newmesh;
1045 }
1046
1047 shadowmesh_t *Mod_ShadowMesh_ReAlloc(mempool_t *mempool, shadowmesh_t *oldmesh, int light, int neighbors)
1048 {
1049         shadowmesh_t *newmesh;
1050         newmesh = Mod_ShadowMesh_Alloc(mempool, oldmesh->numverts, oldmesh->numtriangles, oldmesh->map_diffuse, oldmesh->map_specular, oldmesh->map_normal, light, neighbors, false);
1051         newmesh->numverts = oldmesh->numverts;
1052         newmesh->numtriangles = oldmesh->numtriangles;
1053         memcpy(newmesh->sideoffsets, oldmesh->sideoffsets, sizeof(oldmesh->sideoffsets));
1054         memcpy(newmesh->sidetotals, oldmesh->sidetotals, sizeof(oldmesh->sidetotals));
1055
1056         memcpy(newmesh->vertex3f, oldmesh->vertex3f, oldmesh->numverts * sizeof(float[3]));
1057         if (newmesh->svector3f && oldmesh->svector3f)
1058         {
1059                 memcpy(newmesh->svector3f, oldmesh->svector3f, oldmesh->numverts * sizeof(float[3]));
1060                 memcpy(newmesh->tvector3f, oldmesh->tvector3f, oldmesh->numverts * sizeof(float[3]));
1061                 memcpy(newmesh->normal3f, oldmesh->normal3f, oldmesh->numverts * sizeof(float[3]));
1062                 memcpy(newmesh->texcoord2f, oldmesh->texcoord2f, oldmesh->numverts * sizeof(float[2]));
1063         }
1064         memcpy(newmesh->element3i, oldmesh->element3i, oldmesh->numtriangles * sizeof(int[3]));
1065         if (newmesh->neighbor3i && oldmesh->neighbor3i)
1066                 memcpy(newmesh->neighbor3i, oldmesh->neighbor3i, oldmesh->numtriangles * sizeof(int[3]));
1067         return newmesh;
1068 }
1069
1070 int Mod_ShadowMesh_AddVertex(shadowmesh_t *mesh, float *vertex14f)
1071 {
1072         int hashindex, vnum;
1073         shadowmeshvertexhash_t *hash;
1074         // this uses prime numbers intentionally
1075         hashindex = (unsigned int) (vertex14f[0] * 2003 + vertex14f[1] * 4001 + vertex14f[2] * 7919) % SHADOWMESHVERTEXHASH;
1076         for (hash = mesh->vertexhashtable[hashindex];hash;hash = hash->next)
1077         {
1078                 vnum = (hash - mesh->vertexhashentries);
1079                 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]))
1080                  && (mesh->svector3f == NULL || (mesh->svector3f[vnum * 3 + 0] == vertex14f[3] && mesh->svector3f[vnum * 3 + 1] == vertex14f[4] && mesh->svector3f[vnum * 3 + 2] == vertex14f[5]))
1081                  && (mesh->tvector3f == NULL || (mesh->tvector3f[vnum * 3 + 0] == vertex14f[6] && mesh->tvector3f[vnum * 3 + 1] == vertex14f[7] && mesh->tvector3f[vnum * 3 + 2] == vertex14f[8]))
1082                  && (mesh->normal3f == NULL || (mesh->normal3f[vnum * 3 + 0] == vertex14f[9] && mesh->normal3f[vnum * 3 + 1] == vertex14f[10] && mesh->normal3f[vnum * 3 + 2] == vertex14f[11]))
1083                  && (mesh->texcoord2f == NULL || (mesh->texcoord2f[vnum * 2 + 0] == vertex14f[12] && mesh->texcoord2f[vnum * 2 + 1] == vertex14f[13])))
1084                         return hash - mesh->vertexhashentries;
1085         }
1086         vnum = mesh->numverts++;
1087         hash = mesh->vertexhashentries + vnum;
1088         hash->next = mesh->vertexhashtable[hashindex];
1089         mesh->vertexhashtable[hashindex] = hash;
1090         if (mesh->vertex3f) {mesh->vertex3f[vnum * 3 + 0] = vertex14f[0];mesh->vertex3f[vnum * 3 + 1] = vertex14f[1];mesh->vertex3f[vnum * 3 + 2] = vertex14f[2];}
1091         if (mesh->svector3f) {mesh->svector3f[vnum * 3 + 0] = vertex14f[3];mesh->svector3f[vnum * 3 + 1] = vertex14f[4];mesh->svector3f[vnum * 3 + 2] = vertex14f[5];}
1092         if (mesh->tvector3f) {mesh->tvector3f[vnum * 3 + 0] = vertex14f[6];mesh->tvector3f[vnum * 3 + 1] = vertex14f[7];mesh->tvector3f[vnum * 3 + 2] = vertex14f[8];}
1093         if (mesh->normal3f) {mesh->normal3f[vnum * 3 + 0] = vertex14f[9];mesh->normal3f[vnum * 3 + 1] = vertex14f[10];mesh->normal3f[vnum * 3 + 2] = vertex14f[11];}
1094         if (mesh->texcoord2f) {mesh->texcoord2f[vnum * 2 + 0] = vertex14f[12];mesh->texcoord2f[vnum * 2 + 1] = vertex14f[13];}
1095         return vnum;
1096 }
1097
1098 void Mod_ShadowMesh_AddTriangle(mempool_t *mempool, shadowmesh_t *mesh, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, float *vertex14f)
1099 {
1100         if (mesh->numtriangles == 0)
1101         {
1102                 // set the properties on this empty mesh to be more favorable...
1103                 // (note: this case only occurs for the first triangle added to a new mesh chain)
1104                 mesh->map_diffuse = map_diffuse;
1105                 mesh->map_specular = map_specular;
1106                 mesh->map_normal = map_normal;
1107         }
1108         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)
1109         {
1110                 if (mesh->next == NULL)
1111                         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);
1112                 mesh = mesh->next;
1113         }
1114         mesh->element3i[mesh->numtriangles * 3 + 0] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 0);
1115         mesh->element3i[mesh->numtriangles * 3 + 1] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 1);
1116         mesh->element3i[mesh->numtriangles * 3 + 2] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 2);
1117         mesh->numtriangles++;
1118 }
1119
1120 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)
1121 {
1122         int i, j, e;
1123         float vbuf[3*14], *v;
1124         memset(vbuf, 0, sizeof(vbuf));
1125         for (i = 0;i < numtris;i++)
1126         {
1127                 for (j = 0, v = vbuf;j < 3;j++, v += 14)
1128                 {
1129                         e = *element3i++;
1130                         if (vertex3f)
1131                         {
1132                                 v[0] = vertex3f[e * 3 + 0];
1133                                 v[1] = vertex3f[e * 3 + 1];
1134                                 v[2] = vertex3f[e * 3 + 2];
1135                         }
1136                         if (svector3f)
1137                         {
1138                                 v[3] = svector3f[e * 3 + 0];
1139                                 v[4] = svector3f[e * 3 + 1];
1140                                 v[5] = svector3f[e * 3 + 2];
1141                         }
1142                         if (tvector3f)
1143                         {
1144                                 v[6] = tvector3f[e * 3 + 0];
1145                                 v[7] = tvector3f[e * 3 + 1];
1146                                 v[8] = tvector3f[e * 3 + 2];
1147                         }
1148                         if (normal3f)
1149                         {
1150                                 v[9] = normal3f[e * 3 + 0];
1151                                 v[10] = normal3f[e * 3 + 1];
1152                                 v[11] = normal3f[e * 3 + 2];
1153                         }
1154                         if (texcoord2f)
1155                         {
1156                                 v[12] = texcoord2f[e * 2 + 0];
1157                                 v[13] = texcoord2f[e * 2 + 1];
1158                         }
1159                 }
1160                 Mod_ShadowMesh_AddTriangle(mempool, mesh, map_diffuse, map_specular, map_normal, vbuf);
1161         }
1162
1163         // the triangle calculation can take a while, so let's do a keepalive here
1164         CL_KeepaliveMessage(false);
1165 }
1166
1167 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)
1168 {
1169         // the preparation before shadow mesh initialization can take a while, so let's do a keepalive here
1170         CL_KeepaliveMessage(false);
1171
1172         return Mod_ShadowMesh_Alloc(mempool, maxverts, maxtriangles, map_diffuse, map_specular, map_normal, light, neighbors, expandable);
1173 }
1174
1175 static void Mod_ShadowMesh_CreateVBOs(shadowmesh_t *mesh)
1176 {
1177         if (!vid.support.arb_vertex_buffer_object)
1178                 return;
1179         if (mesh->vbo)
1180                 return;
1181
1182         // element buffer is easy because it's just one array
1183         if (mesh->numtriangles)
1184         {
1185                 if (mesh->element3s)
1186                         mesh->ebo3s = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, mesh->element3s, mesh->numtriangles * sizeof(unsigned short[3]), "shadowmesh");
1187                 else
1188                         mesh->ebo3i = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, mesh->element3i, mesh->numtriangles * sizeof(unsigned int[3]), "shadowmesh");
1189         }
1190
1191         // vertex buffer is several arrays and we put them in the same buffer
1192         //
1193         // is this wise?  the texcoordtexture2f array is used with dynamic
1194         // vertex/svector/tvector/normal when rendering animated models, on the
1195         // other hand animated models don't use a lot of vertices anyway...
1196         if (mesh->numverts)
1197         {
1198                 size_t size;
1199                 unsigned char *mem;
1200                 size = 0;
1201                 mesh->vbooffset_vertex3f           = size;if (mesh->vertex3f          ) size += mesh->numverts * sizeof(float[3]);
1202                 mesh->vbooffset_svector3f          = size;if (mesh->svector3f         ) size += mesh->numverts * sizeof(float[3]);
1203                 mesh->vbooffset_tvector3f          = size;if (mesh->tvector3f         ) size += mesh->numverts * sizeof(float[3]);
1204                 mesh->vbooffset_normal3f           = size;if (mesh->normal3f          ) size += mesh->numverts * sizeof(float[3]);
1205                 mesh->vbooffset_texcoord2f         = size;if (mesh->texcoord2f        ) size += mesh->numverts * sizeof(float[2]);
1206                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
1207                 if (mesh->vertex3f          ) memcpy(mem + mesh->vbooffset_vertex3f          , mesh->vertex3f          , mesh->numverts * sizeof(float[3]));
1208                 if (mesh->svector3f         ) memcpy(mem + mesh->vbooffset_svector3f         , mesh->svector3f         , mesh->numverts * sizeof(float[3]));
1209                 if (mesh->tvector3f         ) memcpy(mem + mesh->vbooffset_tvector3f         , mesh->tvector3f         , mesh->numverts * sizeof(float[3]));
1210                 if (mesh->normal3f          ) memcpy(mem + mesh->vbooffset_normal3f          , mesh->normal3f          , mesh->numverts * sizeof(float[3]));
1211                 if (mesh->texcoord2f        ) memcpy(mem + mesh->vbooffset_texcoord2f        , mesh->texcoord2f        , mesh->numverts * sizeof(float[2]));
1212                 mesh->vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, "shadowmesh");
1213                 Mem_Free(mem);
1214         }
1215 }
1216
1217 shadowmesh_t *Mod_ShadowMesh_Finish(mempool_t *mempool, shadowmesh_t *firstmesh, qboolean light, qboolean neighbors, qboolean createvbo)
1218 {
1219         shadowmesh_t *mesh, *newmesh, *nextmesh;
1220         // reallocate meshs to conserve space
1221         for (mesh = firstmesh, firstmesh = NULL;mesh;mesh = nextmesh)
1222         {
1223                 nextmesh = mesh->next;
1224                 if (mesh->numverts >= 3 && mesh->numtriangles >= 1)
1225                 {
1226                         newmesh = Mod_ShadowMesh_ReAlloc(mempool, mesh, light, neighbors);
1227                         newmesh->next = firstmesh;
1228                         firstmesh = newmesh;
1229                         if (newmesh->element3s)
1230                         {
1231                                 int i;
1232                                 for (i = 0;i < newmesh->numtriangles*3;i++)
1233                                         newmesh->element3s[i] = newmesh->element3i[i];
1234                         }
1235                         if (createvbo)
1236                                 Mod_ShadowMesh_CreateVBOs(newmesh);
1237                 }
1238                 Mem_Free(mesh);
1239         }
1240
1241         // this can take a while, so let's do a keepalive here
1242         CL_KeepaliveMessage(false);
1243
1244         return firstmesh;
1245 }
1246
1247 void Mod_ShadowMesh_CalcBBox(shadowmesh_t *firstmesh, vec3_t mins, vec3_t maxs, vec3_t center, float *radius)
1248 {
1249         int i;
1250         shadowmesh_t *mesh;
1251         vec3_t nmins, nmaxs, ncenter, temp;
1252         float nradius2, dist2, *v;
1253         VectorClear(nmins);
1254         VectorClear(nmaxs);
1255         // calculate bbox
1256         for (mesh = firstmesh;mesh;mesh = mesh->next)
1257         {
1258                 if (mesh == firstmesh)
1259                 {
1260                         VectorCopy(mesh->vertex3f, nmins);
1261                         VectorCopy(mesh->vertex3f, nmaxs);
1262                 }
1263                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1264                 {
1265                         if (nmins[0] > v[0]) nmins[0] = v[0];if (nmaxs[0] < v[0]) nmaxs[0] = v[0];
1266                         if (nmins[1] > v[1]) nmins[1] = v[1];if (nmaxs[1] < v[1]) nmaxs[1] = v[1];
1267                         if (nmins[2] > v[2]) nmins[2] = v[2];if (nmaxs[2] < v[2]) nmaxs[2] = v[2];
1268                 }
1269         }
1270         // calculate center and radius
1271         ncenter[0] = (nmins[0] + nmaxs[0]) * 0.5f;
1272         ncenter[1] = (nmins[1] + nmaxs[1]) * 0.5f;
1273         ncenter[2] = (nmins[2] + nmaxs[2]) * 0.5f;
1274         nradius2 = 0;
1275         for (mesh = firstmesh;mesh;mesh = mesh->next)
1276         {
1277                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1278                 {
1279                         VectorSubtract(v, ncenter, temp);
1280                         dist2 = DotProduct(temp, temp);
1281                         if (nradius2 < dist2)
1282                                 nradius2 = dist2;
1283                 }
1284         }
1285         // return data
1286         if (mins)
1287                 VectorCopy(nmins, mins);
1288         if (maxs)
1289                 VectorCopy(nmaxs, maxs);
1290         if (center)
1291                 VectorCopy(ncenter, center);
1292         if (radius)
1293                 *radius = sqrt(nradius2);
1294 }
1295
1296 void Mod_ShadowMesh_Free(shadowmesh_t *mesh)
1297 {
1298         shadowmesh_t *nextmesh;
1299         for (;mesh;mesh = nextmesh)
1300         {
1301                 if (mesh->ebo3i)
1302                         R_Mesh_DestroyBufferObject(mesh->ebo3i);
1303                 if (mesh->ebo3s)
1304                         R_Mesh_DestroyBufferObject(mesh->ebo3s);
1305                 if (mesh->vbo)
1306                         R_Mesh_DestroyBufferObject(mesh->vbo);
1307                 nextmesh = mesh->next;
1308                 Mem_Free(mesh);
1309         }
1310 }
1311
1312 void Mod_CreateCollisionMesh(dp_model_t *mod)
1313 {
1314         int k;
1315         int numcollisionmeshtriangles;
1316         const msurface_t *surface;
1317         mempool_t *mempool = mod->mempool;
1318         if (!mempool && mod->brush.parentmodel)
1319                 mempool = mod->brush.parentmodel->mempool;
1320         // make a single combined collision mesh for physics engine use
1321         // TODO rewrite this to use the collision brushes as source, to fix issues with e.g. common/caulk which creates no drawsurface
1322         numcollisionmeshtriangles = 0;
1323         for (k = 0;k < mod->nummodelsurfaces;k++)
1324         {
1325                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1326                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1327                         continue;
1328                 numcollisionmeshtriangles += surface->num_triangles;
1329         }
1330         mod->brush.collisionmesh = Mod_ShadowMesh_Begin(mempool, numcollisionmeshtriangles * 3, numcollisionmeshtriangles, NULL, NULL, NULL, false, false, true);
1331         for (k = 0;k < mod->nummodelsurfaces;k++)
1332         {
1333                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1334                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1335                         continue;
1336                 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));
1337         }
1338         mod->brush.collisionmesh = Mod_ShadowMesh_Finish(mempool, mod->brush.collisionmesh, false, true, false);
1339 }
1340
1341 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)
1342 {
1343         float v[3], tc[3];
1344         v[0] = ix;
1345         v[1] = iy;
1346         if (ix >= 0 && iy >= 0 && ix < imagewidth && iy < imageheight)
1347                 v[2] = (imagepixels[((iy*imagewidth)+ix)*4+0] + imagepixels[((iy*imagewidth)+ix)*4+1] + imagepixels[((iy*imagewidth)+ix)*4+2]) * (1.0f / 765.0f);
1348         else
1349                 v[2] = 0;
1350         Matrix4x4_Transform(pixelstepmatrix, v, vertex3f);
1351         Matrix4x4_Transform(pixeltexturestepmatrix, v, tc);
1352         texcoord2f[0] = tc[0];
1353         texcoord2f[1] = tc[1];
1354 }
1355
1356 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)
1357 {
1358         float vup[3], vdown[3], vleft[3], vright[3];
1359         float tcup[3], tcdown[3], tcleft[3], tcright[3];
1360         float sv[3], tv[3], nl[3];
1361         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, pixelstepmatrix, pixeltexturestepmatrix);
1362         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy - 1, vup, tcup, pixelstepmatrix, pixeltexturestepmatrix);
1363         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy + 1, vdown, tcdown, pixelstepmatrix, pixeltexturestepmatrix);
1364         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix - 1, iy, vleft, tcleft, pixelstepmatrix, pixeltexturestepmatrix);
1365         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix + 1, iy, vright, tcright, pixelstepmatrix, pixeltexturestepmatrix);
1366         Mod_BuildBumpVectors(vertex3f, vup, vright, texcoord2f, tcup, tcright, svector3f, tvector3f, normal3f);
1367         Mod_BuildBumpVectors(vertex3f, vright, vdown, texcoord2f, tcright, tcdown, sv, tv, nl);
1368         VectorAdd(svector3f, sv, svector3f);
1369         VectorAdd(tvector3f, tv, tvector3f);
1370         VectorAdd(normal3f, nl, normal3f);
1371         Mod_BuildBumpVectors(vertex3f, vdown, vleft, texcoord2f, tcdown, tcleft, sv, tv, nl);
1372         VectorAdd(svector3f, sv, svector3f);
1373         VectorAdd(tvector3f, tv, tvector3f);
1374         VectorAdd(normal3f, nl, normal3f);
1375         Mod_BuildBumpVectors(vertex3f, vleft, vup, texcoord2f, tcleft, tcup, sv, tv, nl);
1376         VectorAdd(svector3f, sv, svector3f);
1377         VectorAdd(tvector3f, tv, tvector3f);
1378         VectorAdd(normal3f, nl, normal3f);
1379 }
1380
1381 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)
1382 {
1383         int x, y, ix, iy, *e;
1384         e = element3i;
1385         for (y = 0;y < height;y++)
1386         {
1387                 for (x = 0;x < width;x++)
1388                 {
1389                         e[0] = (y + 1) * (width + 1) + (x + 0);
1390                         e[1] = (y + 0) * (width + 1) + (x + 0);
1391                         e[2] = (y + 1) * (width + 1) + (x + 1);
1392                         e[3] = (y + 0) * (width + 1) + (x + 0);
1393                         e[4] = (y + 0) * (width + 1) + (x + 1);
1394                         e[5] = (y + 1) * (width + 1) + (x + 1);
1395                         e += 6;
1396                 }
1397         }
1398         Mod_BuildTriangleNeighbors(neighbor3i, element3i, width*height*2);
1399         for (y = 0, iy = y1;y < height + 1;y++, iy++)
1400                 for (x = 0, ix = x1;x < width + 1;x++, ix++, vertex3f += 3, texcoord2f += 2, svector3f += 3, tvector3f += 3, normal3f += 3)
1401                         Mod_GetTerrainVertexFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, svector3f, tvector3f, normal3f, pixelstepmatrix, pixeltexturestepmatrix);
1402 }
1403
1404 #if 0
1405 void Mod_Terrain_SurfaceRecurseChunk(dp_model_t *model, int stepsize, int x, int y)
1406 {
1407         float mins[3];
1408         float maxs[3];
1409         float chunkwidth = min(stepsize, model->terrain.width - 1 - x);
1410         float chunkheight = min(stepsize, model->terrain.height - 1 - y);
1411         float viewvector[3];
1412         unsigned int firstvertex;
1413         unsigned int *e;
1414         float *v;
1415         if (chunkwidth < 2 || chunkheight < 2)
1416                 return;
1417         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]);
1418         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]);
1419         viewvector[0] = bound(mins[0], localvieworigin, maxs[0]) - model->terrain.vieworigin[0];
1420         viewvector[1] = bound(mins[1], localvieworigin, maxs[1]) - model->terrain.vieworigin[1];
1421         viewvector[2] = bound(mins[2], localvieworigin, maxs[2]) - model->terrain.vieworigin[2];
1422         if (stepsize > 1 && VectorLength(viewvector) < stepsize*model->terrain.scale[0]*r_terrain_lodscale.value)
1423         {
1424                 // too close for this stepsize, emit as 4 chunks instead
1425                 stepsize /= 2;
1426                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y);
1427                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y);
1428                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y+stepsize);
1429                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y+stepsize);
1430                 return;
1431         }
1432         // emit the geometry at stepsize into our vertex buffer / index buffer
1433         // we add two columns and two rows for skirt
1434         outwidth = chunkwidth+2;
1435         outheight = chunkheight+2;
1436         outwidth2 = outwidth-1;
1437         outheight2 = outheight-1;
1438         outwidth3 = outwidth+1;
1439         outheight3 = outheight+1;
1440         firstvertex = numvertices;
1441         e = model->terrain.element3i + numtriangles;
1442         numtriangles += chunkwidth*chunkheight*2+chunkwidth*2*2+chunkheight*2*2;
1443         v = model->terrain.vertex3f + numvertices;
1444         numvertices += (chunkwidth+1)*(chunkheight+1)+(chunkwidth+1)*2+(chunkheight+1)*2;
1445         // emit the triangles (note: the skirt is treated as two extra rows and two extra columns)
1446         for (ty = 0;ty < outheight;ty++)
1447         {
1448                 for (tx = 0;tx < outwidth;tx++)
1449                 {
1450                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1451                         *e++ = firstvertex + (ty  )*outwidth3+(tx+1);
1452                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1453                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1454                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1455                         *e++ = firstvertex + (ty+1)*outwidth3+(tx  );
1456                 }
1457         }
1458         // TODO: emit surface vertices (x+tx*stepsize, y+ty*stepsize)
1459         for (ty = 0;ty <= outheight;ty++)
1460         {
1461                 skirtrow = ty == 0 || ty == outheight;
1462                 ry = y+bound(1, ty, outheight)*stepsize;
1463                 for (tx = 0;tx <= outwidth;tx++)
1464                 {
1465                         skirt = skirtrow || tx == 0 || tx == outwidth;
1466                         rx = x+bound(1, tx, outwidth)*stepsize;
1467                         v[0] = rx*scale[0];
1468                         v[1] = ry*scale[1];
1469                         v[2] = heightmap[ry*terrainwidth+rx]*scale[2];
1470                         v += 3;
1471                 }
1472         }
1473         // TODO: emit skirt vertices
1474 }
1475
1476 void Mod_Terrain_UpdateSurfacesForViewOrigin(dp_model_t *model)
1477 {
1478         for (y = 0;y < model->terrain.size[1];y += model->terrain.
1479         Mod_Terrain_SurfaceRecurseChunk(model, model->terrain.maxstepsize, x, y);
1480         Mod_Terrain_BuildChunk(model,
1481 }
1482 #endif
1483
1484 q3wavefunc_t Mod_LoadQ3Shaders_EnumerateWaveFunc(const char *s)
1485 {
1486         if (!strcasecmp(s, "sin"))             return Q3WAVEFUNC_SIN;
1487         if (!strcasecmp(s, "square"))          return Q3WAVEFUNC_SQUARE;
1488         if (!strcasecmp(s, "triangle"))        return Q3WAVEFUNC_TRIANGLE;
1489         if (!strcasecmp(s, "sawtooth"))        return Q3WAVEFUNC_SAWTOOTH;
1490         if (!strcasecmp(s, "inversesawtooth")) return Q3WAVEFUNC_INVERSESAWTOOTH;
1491         if (!strcasecmp(s, "noise"))           return Q3WAVEFUNC_NOISE;
1492         Con_DPrintf("Mod_LoadQ3Shaders: unknown wavefunc %s\n", s);
1493         return Q3WAVEFUNC_NONE;
1494 }
1495
1496 void Mod_FreeQ3Shaders(void)
1497 {
1498         Mem_FreePool(&q3shaders_mem);
1499 }
1500
1501 static void Q3Shader_AddToHash (q3shaderinfo_t* shader)
1502 {
1503         unsigned short hash = CRC_Block_CaseInsensitive ((const unsigned char *)shader->name, strlen (shader->name));
1504         q3shader_hash_entry_t* entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
1505         q3shader_hash_entry_t* lastEntry = NULL;
1506         while (entry != NULL)
1507         {
1508                 if (strcasecmp (entry->shader.name, shader->name) == 0)
1509                 {
1510                         unsigned char *start, *end, *start2;
1511                         start = (unsigned char *) (&shader->Q3SHADERINFO_COMPARE_START);
1512                         end = ((unsigned char *) (&shader->Q3SHADERINFO_COMPARE_END)) + sizeof(shader->Q3SHADERINFO_COMPARE_END);
1513                         start2 = (unsigned char *) (&entry->shader.Q3SHADERINFO_COMPARE_START);
1514                         if(memcmp(start, start2, end - start))
1515                                 Con_DPrintf("Shader '%s' already defined, ignoring mismatching redeclaration\n", shader->name);
1516                         else
1517                                 Con_DPrintf("Shader '%s' already defined\n", shader->name);
1518                         return;
1519                 }
1520                 lastEntry = entry;
1521                 entry = entry->chain;
1522         }
1523         if (entry == NULL)
1524         {
1525                 if (lastEntry->shader.name[0] != 0)
1526                 {
1527                         /* Add to chain */
1528                         q3shader_hash_entry_t* newEntry = (q3shader_hash_entry_t*)
1529                           Mem_ExpandableArray_AllocRecord (&q3shader_data->hash_entries);
1530
1531                         while (lastEntry->chain != NULL) lastEntry = lastEntry->chain;
1532                         lastEntry->chain = newEntry;
1533                         newEntry->chain = NULL;
1534                         lastEntry = newEntry;
1535                 }
1536                 /* else: head of chain, in hash entry array */
1537                 entry = lastEntry;
1538         }
1539         memcpy (&entry->shader, shader, sizeof (q3shaderinfo_t));
1540 }
1541
1542 extern cvar_t r_picmipworld;
1543 void Mod_LoadQ3Shaders(void)
1544 {
1545         int j;
1546         int fileindex;
1547         fssearch_t *search;
1548         char *f;
1549         const char *text;
1550         q3shaderinfo_t shader;
1551         q3shaderinfo_layer_t *layer;
1552         int numparameters;
1553         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
1554
1555         Mod_FreeQ3Shaders();
1556
1557         q3shaders_mem = Mem_AllocPool("q3shaders", 0, NULL);
1558         q3shader_data = (q3shader_data_t*)Mem_Alloc (q3shaders_mem,
1559                 sizeof (q3shader_data_t));
1560         Mem_ExpandableArray_NewArray (&q3shader_data->hash_entries,
1561                 q3shaders_mem, sizeof (q3shader_hash_entry_t), 256);
1562         Mem_ExpandableArray_NewArray (&q3shader_data->char_ptrs,
1563                 q3shaders_mem, sizeof (char**), 256);
1564
1565         search = FS_Search("scripts/*.shader", true, false);
1566         if (!search)
1567                 return;
1568         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
1569         {
1570                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
1571                 if (!f)
1572                         continue;
1573                 while (COM_ParseToken_QuakeC(&text, false))
1574                 {
1575                         memset (&shader, 0, sizeof(shader));
1576                         shader.reflectmin = 0;
1577                         shader.reflectmax = 1;
1578                         shader.refractfactor = 1;
1579                         Vector4Set(shader.refractcolor4f, 1, 1, 1, 1);
1580                         shader.reflectfactor = 1;
1581                         Vector4Set(shader.reflectcolor4f, 1, 1, 1, 1);
1582                         shader.r_water_wateralpha = 1;
1583                         shader.specularscalemod = 1;
1584                         shader.specularpowermod = 1;
1585
1586                         strlcpy(shader.name, com_token, sizeof(shader.name));
1587                         if (!COM_ParseToken_QuakeC(&text, false) || strcasecmp(com_token, "{"))
1588                         {
1589                                 Con_DPrintf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
1590                                 break;
1591                         }
1592                         while (COM_ParseToken_QuakeC(&text, false))
1593                         {
1594                                 if (!strcasecmp(com_token, "}"))
1595                                         break;
1596                                 if (!strcasecmp(com_token, "{"))
1597                                 {
1598                                         static q3shaderinfo_layer_t dummy;
1599                                         if (shader.numlayers < Q3SHADER_MAXLAYERS)
1600                                         {
1601                                                 layer = shader.layers + shader.numlayers++;
1602                                         }
1603                                         else
1604                                         {
1605                                                 // parse and process it anyway, just don't store it (so a map $lightmap or such stuff still is found)
1606                                                 memset(&dummy, 0, sizeof(dummy));
1607                                                 layer = &dummy;
1608                                         }
1609                                         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1610                                         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1611                                         layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1612                                         layer->blendfunc[0] = GL_ONE;
1613                                         layer->blendfunc[1] = GL_ZERO;
1614                                         while (COM_ParseToken_QuakeC(&text, false))
1615                                         {
1616                                                 if (!strcasecmp(com_token, "}"))
1617                                                         break;
1618                                                 if (!strcasecmp(com_token, "\n"))
1619                                                         continue;
1620                                                 numparameters = 0;
1621                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1622                                                 {
1623                                                         if (j < TEXTURE_MAXFRAMES + 4)
1624                                                         {
1625                                                                 // remap dp_water to dpwater, dp_reflect to dpreflect, etc.
1626                                                                 if(j == 0 && !strncasecmp(com_token, "dp_", 3))
1627                                                                         dpsnprintf(parameter[j], sizeof(parameter[j]), "dp%s", &com_token[3]);
1628                                                                 else
1629                                                                         strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1630                                                                 numparameters = j + 1;
1631                                                         }
1632                                                         if (!COM_ParseToken_QuakeC(&text, true))
1633                                                                 break;
1634                                                 }
1635                                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1636                                                 //      parameter[j][0] = 0;
1637                                                 if (developer_insane.integer)
1638                                                 {
1639                                                         Con_DPrintf("%s %i: ", shader.name, shader.numlayers - 1);
1640                                                         for (j = 0;j < numparameters;j++)
1641                                                                 Con_DPrintf(" %s", parameter[j]);
1642                                                         Con_DPrint("\n");
1643                                                 }
1644                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
1645                                                 {
1646                                                         if (numparameters == 2)
1647                                                         {
1648                                                                 if (!strcasecmp(parameter[1], "add"))
1649                                                                 {
1650                                                                         layer->blendfunc[0] = GL_ONE;
1651                                                                         layer->blendfunc[1] = GL_ONE;
1652                                                                 }
1653                                                                 else if (!strcasecmp(parameter[1], "filter"))
1654                                                                 {
1655                                                                         layer->blendfunc[0] = GL_DST_COLOR;
1656                                                                         layer->blendfunc[1] = GL_ZERO;
1657                                                                 }
1658                                                                 else if (!strcasecmp(parameter[1], "blend"))
1659                                                                 {
1660                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
1661                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
1662                                                                 }
1663                                                         }
1664                                                         else if (numparameters == 3)
1665                                                         {
1666                                                                 int k;
1667                                                                 for (k = 0;k < 2;k++)
1668                                                                 {
1669                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
1670                                                                                 layer->blendfunc[k] = GL_ONE;
1671                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
1672                                                                                 layer->blendfunc[k] = GL_ZERO;
1673                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
1674                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
1675                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
1676                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
1677                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
1678                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
1679                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
1680                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1681                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
1682                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
1683                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
1684                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
1685                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
1686                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
1687                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
1688                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1689                                                                         else
1690                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
1691                                                                 }
1692                                                         }
1693                                                 }
1694                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
1695                                                         layer->alphatest = true;
1696                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
1697                                                 {
1698                                                         if (!strcasecmp(parameter[0], "clampmap"))
1699                                                                 layer->clampmap = true;
1700                                                         layer->numframes = 1;
1701                                                         layer->framerate = 1;
1702                                                         layer->texturename = (char**)Mem_ExpandableArray_AllocRecord (
1703                                                                 &q3shader_data->char_ptrs);
1704                                                         layer->texturename[0] = Mem_strdup (q3shaders_mem, parameter[1]);
1705                                                         if (!strcasecmp(parameter[1], "$lightmap"))
1706                                                                 shader.lighting = true;
1707                                                 }
1708                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
1709                                                 {
1710                                                         int i;
1711                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
1712                                                         layer->framerate = atof(parameter[1]);
1713                                                         layer->texturename = (char **) Mem_Alloc (q3shaders_mem, sizeof (char*) * layer->numframes);
1714                                                         for (i = 0;i < layer->numframes;i++)
1715                                                                 layer->texturename[i] = Mem_strdup (q3shaders_mem, parameter[i + 2]);
1716                                                 }
1717                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen"))
1718                                                 {
1719                                                         int i;
1720                                                         for (i = 0;i < numparameters - 2 && i < Q3RGBGEN_MAXPARMS;i++)
1721                                                                 layer->rgbgen.parms[i] = atof(parameter[i+2]);
1722                                                              if (!strcasecmp(parameter[1], "identity"))         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1723                                                         else if (!strcasecmp(parameter[1], "const"))            layer->rgbgen.rgbgen = Q3RGBGEN_CONST;
1724                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->rgbgen.rgbgen = Q3RGBGEN_ENTITY;
1725                                                         else if (!strcasecmp(parameter[1], "exactvertex"))      layer->rgbgen.rgbgen = Q3RGBGEN_EXACTVERTEX;
1726                                                         else if (!strcasecmp(parameter[1], "identitylighting")) layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITYLIGHTING;
1727                                                         else if (!strcasecmp(parameter[1], "lightingdiffuse"))  layer->rgbgen.rgbgen = Q3RGBGEN_LIGHTINGDIFFUSE;
1728                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSENTITY;
1729                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSVERTEX;
1730                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->rgbgen.rgbgen = Q3RGBGEN_VERTEX;
1731                                                         else if (!strcasecmp(parameter[1], "wave"))
1732                                                         {
1733                                                                 layer->rgbgen.rgbgen = Q3RGBGEN_WAVE;
1734                                                                 layer->rgbgen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1735                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1736                                                                         layer->rgbgen.waveparms[i] = atof(parameter[i+3]);
1737                                                         }
1738                                                         else Con_DPrintf("%s parsing warning: unknown rgbgen %s\n", search->filenames[fileindex], parameter[1]);
1739                                                 }
1740                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen"))
1741                                                 {
1742                                                         int i;
1743                                                         for (i = 0;i < numparameters - 2 && i < Q3ALPHAGEN_MAXPARMS;i++)
1744                                                                 layer->alphagen.parms[i] = atof(parameter[i+2]);
1745                                                              if (!strcasecmp(parameter[1], "identity"))         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1746                                                         else if (!strcasecmp(parameter[1], "const"))            layer->alphagen.alphagen = Q3ALPHAGEN_CONST;
1747                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->alphagen.alphagen = Q3ALPHAGEN_ENTITY;
1748                                                         else if (!strcasecmp(parameter[1], "lightingspecular")) layer->alphagen.alphagen = Q3ALPHAGEN_LIGHTINGSPECULAR;
1749                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSENTITY;
1750                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSVERTEX;
1751                                                         else if (!strcasecmp(parameter[1], "portal"))           layer->alphagen.alphagen = Q3ALPHAGEN_PORTAL;
1752                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->alphagen.alphagen = Q3ALPHAGEN_VERTEX;
1753                                                         else if (!strcasecmp(parameter[1], "wave"))
1754                                                         {
1755                                                                 layer->alphagen.alphagen = Q3ALPHAGEN_WAVE;
1756                                                                 layer->alphagen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1757                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1758                                                                         layer->alphagen.waveparms[i] = atof(parameter[i+3]);
1759                                                         }
1760                                                         else Con_DPrintf("%s parsing warning: unknown alphagen %s\n", search->filenames[fileindex], parameter[1]);
1761                                                 }
1762                                                 else if (numparameters >= 2 && (!strcasecmp(parameter[0], "texgen") || !strcasecmp(parameter[0], "tcgen")))
1763                                                 {
1764                                                         int i;
1765                                                         // observed values: tcgen environment
1766                                                         // no other values have been observed in real shaders
1767                                                         for (i = 0;i < numparameters - 2 && i < Q3TCGEN_MAXPARMS;i++)
1768                                                                 layer->tcgen.parms[i] = atof(parameter[i+2]);
1769                                                              if (!strcasecmp(parameter[1], "base"))        layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1770                                                         else if (!strcasecmp(parameter[1], "texture"))     layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1771                                                         else if (!strcasecmp(parameter[1], "environment")) layer->tcgen.tcgen = Q3TCGEN_ENVIRONMENT;
1772                                                         else if (!strcasecmp(parameter[1], "lightmap"))    layer->tcgen.tcgen = Q3TCGEN_LIGHTMAP;
1773                                                         else if (!strcasecmp(parameter[1], "vector"))      layer->tcgen.tcgen = Q3TCGEN_VECTOR;
1774                                                         else Con_DPrintf("%s parsing warning: unknown tcgen mode %s\n", search->filenames[fileindex], parameter[1]);
1775                                                 }
1776                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "tcmod"))
1777                                                 {
1778                                                         int i, tcmodindex;
1779                                                         // observed values:
1780                                                         // tcmod rotate #
1781                                                         // tcmod scale # #
1782                                                         // tcmod scroll # #
1783                                                         // tcmod stretch sin # # # #
1784                                                         // tcmod stretch triangle # # # #
1785                                                         // tcmod transform # # # # # #
1786                                                         // tcmod turb # # # #
1787                                                         // tcmod turb sin # # # #  (this is bogus)
1788                                                         // no other values have been observed in real shaders
1789                                                         for (tcmodindex = 0;tcmodindex < Q3MAXTCMODS;tcmodindex++)
1790                                                                 if (!layer->tcmods[tcmodindex].tcmod)
1791                                                                         break;
1792                                                         if (tcmodindex < Q3MAXTCMODS)
1793                                                         {
1794                                                                 for (i = 0;i < numparameters - 2 && i < Q3TCMOD_MAXPARMS;i++)
1795                                                                         layer->tcmods[tcmodindex].parms[i] = atof(parameter[i+2]);
1796                                                                          if (!strcasecmp(parameter[1], "entitytranslate")) layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ENTITYTRANSLATE;
1797                                                                 else if (!strcasecmp(parameter[1], "rotate"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ROTATE;
1798                                                                 else if (!strcasecmp(parameter[1], "scale"))           layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCALE;
1799                                                                 else if (!strcasecmp(parameter[1], "scroll"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCROLL;
1800                                                                 else if (!strcasecmp(parameter[1], "page"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_PAGE;
1801                                                                 else if (!strcasecmp(parameter[1], "stretch"))
1802                                                                 {
1803                                                                         layer->tcmods[tcmodindex].tcmod = Q3TCMOD_STRETCH;
1804                                                                         layer->tcmods[tcmodindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1805                                                                         for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1806                                                                                 layer->tcmods[tcmodindex].waveparms[i] = atof(parameter[i+3]);
1807                                                                 }
1808                                                                 else if (!strcasecmp(parameter[1], "transform"))       layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TRANSFORM;
1809                                                                 else if (!strcasecmp(parameter[1], "turb"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TURBULENT;
1810                                                                 else Con_DPrintf("%s parsing warning: unknown tcmod mode %s\n", search->filenames[fileindex], parameter[1]);
1811                                                         }
1812                                                         else
1813                                                                 Con_DPrintf("%s parsing warning: too many tcmods on one layer\n", search->filenames[fileindex]);
1814                                                 }
1815                                                 // break out a level if it was a closing brace (not using the character here to not confuse vim)
1816                                                 if (!strcasecmp(com_token, "}"))
1817                                                         break;
1818                                         }
1819                                         if (layer->rgbgen.rgbgen == Q3RGBGEN_LIGHTINGDIFFUSE || layer->rgbgen.rgbgen == Q3RGBGEN_VERTEX)
1820                                                 shader.lighting = true;
1821                                         if (layer->alphagen.alphagen == Q3ALPHAGEN_VERTEX)
1822                                         {
1823                                                 if (layer == shader.layers + 0)
1824                                                 {
1825                                                         // vertex controlled transparency
1826                                                         shader.vertexalpha = true;
1827                                                 }
1828                                                 else
1829                                                 {
1830                                                         // multilayer terrain shader or similar
1831                                                         shader.textureblendalpha = true;
1832                                                 }
1833                                         }
1834                                         layer->texflags = TEXF_ALPHA;
1835                                         if (!(shader.surfaceparms & Q3SURFACEPARM_NOMIPMAPS))
1836                                                 layer->texflags |= TEXF_MIPMAP;
1837                                         if (!(shader.textureflags & Q3TEXTUREFLAG_NOPICMIP))
1838                                                 layer->texflags |= TEXF_PICMIP | TEXF_COMPRESS;
1839                                         if (layer->clampmap)
1840                                                 layer->texflags |= TEXF_CLAMP;
1841                                         continue;
1842                                 }
1843                                 numparameters = 0;
1844                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1845                                 {
1846                                         if (j < TEXTURE_MAXFRAMES + 4)
1847                                         {
1848                                                 // remap dp_water to dpwater, dp_reflect to dpreflect, etc.
1849                                                 if(j == 0 && !strncasecmp(com_token, "dp_", 3))
1850                                                         dpsnprintf(parameter[j], sizeof(parameter[j]), "dp%s", &com_token[3]);
1851                                                 else
1852                                                         strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1853                                                 numparameters = j + 1;
1854                                         }
1855                                         if (!COM_ParseToken_QuakeC(&text, true))
1856                                                 break;
1857                                 }
1858                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1859                                 //      parameter[j][0] = 0;
1860                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
1861                                         break;
1862                                 if (developer_insane.integer)
1863                                 {
1864                                         Con_DPrintf("%s: ", shader.name);
1865                                         for (j = 0;j < numparameters;j++)
1866                                                 Con_DPrintf(" %s", parameter[j]);
1867                                         Con_DPrint("\n");
1868                                 }
1869                                 if (numparameters < 1)
1870                                         continue;
1871                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
1872                                 {
1873                                         if (!strcasecmp(parameter[1], "alphashadow"))
1874                                                 shader.surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
1875                                         else if (!strcasecmp(parameter[1], "areaportal"))
1876                                                 shader.surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
1877                                         else if (!strcasecmp(parameter[1], "botclip"))
1878                                                 shader.surfaceparms |= Q3SURFACEPARM_BOTCLIP;
1879                                         else if (!strcasecmp(parameter[1], "clusterportal"))
1880                                                 shader.surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
1881                                         else if (!strcasecmp(parameter[1], "detail"))
1882                                                 shader.surfaceparms |= Q3SURFACEPARM_DETAIL;
1883                                         else if (!strcasecmp(parameter[1], "donotenter"))
1884                                                 shader.surfaceparms |= Q3SURFACEPARM_DONOTENTER;
1885                                         else if (!strcasecmp(parameter[1], "dust"))
1886                                                 shader.surfaceparms |= Q3SURFACEPARM_DUST;
1887                                         else if (!strcasecmp(parameter[1], "hint"))
1888                                                 shader.surfaceparms |= Q3SURFACEPARM_HINT;
1889                                         else if (!strcasecmp(parameter[1], "fog"))
1890                                                 shader.surfaceparms |= Q3SURFACEPARM_FOG;
1891                                         else if (!strcasecmp(parameter[1], "lava"))
1892                                                 shader.surfaceparms |= Q3SURFACEPARM_LAVA;
1893                                         else if (!strcasecmp(parameter[1], "lightfilter"))
1894                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
1895                                         else if (!strcasecmp(parameter[1], "lightgrid"))
1896                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
1897                                         else if (!strcasecmp(parameter[1], "metalsteps"))
1898                                                 shader.surfaceparms |= Q3SURFACEPARM_METALSTEPS;
1899                                         else if (!strcasecmp(parameter[1], "nodamage"))
1900                                                 shader.surfaceparms |= Q3SURFACEPARM_NODAMAGE;
1901                                         else if (!strcasecmp(parameter[1], "nodlight"))
1902                                                 shader.surfaceparms |= Q3SURFACEPARM_NODLIGHT;
1903                                         else if (!strcasecmp(parameter[1], "nodraw"))
1904                                                 shader.surfaceparms |= Q3SURFACEPARM_NODRAW;
1905                                         else if (!strcasecmp(parameter[1], "nodrop"))
1906                                                 shader.surfaceparms |= Q3SURFACEPARM_NODROP;
1907                                         else if (!strcasecmp(parameter[1], "noimpact"))
1908                                                 shader.surfaceparms |= Q3SURFACEPARM_NOIMPACT;
1909                                         else if (!strcasecmp(parameter[1], "nolightmap"))
1910                                                 shader.surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
1911                                         else if (!strcasecmp(parameter[1], "nomarks"))
1912                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMARKS;
1913                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
1914                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
1915                                         else if (!strcasecmp(parameter[1], "nonsolid"))
1916                                                 shader.surfaceparms |= Q3SURFACEPARM_NONSOLID;
1917                                         else if (!strcasecmp(parameter[1], "origin"))
1918                                                 shader.surfaceparms |= Q3SURFACEPARM_ORIGIN;
1919                                         else if (!strcasecmp(parameter[1], "playerclip"))
1920                                                 shader.surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
1921                                         else if (!strcasecmp(parameter[1], "sky"))
1922                                                 shader.surfaceparms |= Q3SURFACEPARM_SKY;
1923                                         else if (!strcasecmp(parameter[1], "slick"))
1924                                                 shader.surfaceparms |= Q3SURFACEPARM_SLICK;
1925                                         else if (!strcasecmp(parameter[1], "slime"))
1926                                                 shader.surfaceparms |= Q3SURFACEPARM_SLIME;
1927                                         else if (!strcasecmp(parameter[1], "structural"))
1928                                                 shader.surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
1929                                         else if (!strcasecmp(parameter[1], "trans"))
1930                                                 shader.surfaceparms |= Q3SURFACEPARM_TRANS;
1931                                         else if (!strcasecmp(parameter[1], "water"))
1932                                                 shader.surfaceparms |= Q3SURFACEPARM_WATER;
1933                                         else if (!strcasecmp(parameter[1], "pointlight"))
1934                                                 shader.surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
1935                                         else if (!strcasecmp(parameter[1], "antiportal"))
1936                                                 shader.surfaceparms |= Q3SURFACEPARM_ANTIPORTAL;
1937                                         else
1938                                                 Con_DPrintf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
1939                                 }
1940                                 else if (!strcasecmp(parameter[0], "dpshadow"))
1941                                         shader.dpshadow = true;
1942                                 else if (!strcasecmp(parameter[0], "dpnoshadow"))
1943                                         shader.dpnoshadow = true;
1944                                 else if (!strcasecmp(parameter[0], "dpreflectcube"))
1945                                         strlcpy(shader.dpreflectcube, parameter[1], sizeof(shader.dpreflectcube));
1946                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
1947                                 {
1948                                         // some q3 skies don't have the sky parm set
1949                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
1950                                         strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
1951                                 }
1952                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
1953                                 {
1954                                         // some q3 skies don't have the sky parm set
1955                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
1956                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
1957                                                 strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
1958                                 }
1959                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
1960                                 {
1961                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
1962                                                 shader.textureflags |= Q3TEXTUREFLAG_TWOSIDED;
1963                                 }
1964                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
1965                                         shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
1966                                 else if (!strcasecmp(parameter[0], "nopicmip"))
1967                                         shader.textureflags |= Q3TEXTUREFLAG_NOPICMIP;
1968                                 else if (!strcasecmp(parameter[0], "polygonoffset"))
1969                                         shader.textureflags |= Q3TEXTUREFLAG_POLYGONOFFSET;
1970                                 else if (!strcasecmp(parameter[0], "dprefract") && numparameters >= 5)
1971                                 {
1972                                         shader.textureflags |= Q3TEXTUREFLAG_REFRACTION;
1973                                         shader.refractfactor = atof(parameter[1]);
1974                                         Vector4Set(shader.refractcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), 1);
1975                                 }
1976                                 else if (!strcasecmp(parameter[0], "dpreflect") && numparameters >= 6)
1977                                 {
1978                                         shader.textureflags |= Q3TEXTUREFLAG_REFLECTION;
1979                                         shader.reflectfactor = atof(parameter[1]);
1980                                         Vector4Set(shader.reflectcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), atof(parameter[5]));
1981                                 }
1982                                 else if (!strcasecmp(parameter[0], "dpwater") && numparameters >= 12)
1983                                 {
1984                                         shader.textureflags |= Q3TEXTUREFLAG_WATERSHADER;
1985                                         shader.reflectmin = atof(parameter[1]);
1986                                         shader.reflectmax = atof(parameter[2]);
1987                                         shader.refractfactor = atof(parameter[3]);
1988                                         shader.reflectfactor = atof(parameter[4]);
1989                                         Vector4Set(shader.refractcolor4f, atof(parameter[5]), atof(parameter[6]), atof(parameter[7]), 1);
1990                                         Vector4Set(shader.reflectcolor4f, atof(parameter[8]), atof(parameter[9]), atof(parameter[10]), 1);
1991                                         shader.r_water_wateralpha = atof(parameter[11]);
1992                                 }
1993                                 else if (!strcasecmp(parameter[0], "dpglossintensitymod") && numparameters >= 2)
1994                                 {
1995                                         shader.specularscalemod = atof(parameter[1]);
1996                                 }
1997                                 else if (!strcasecmp(parameter[0], "dpglossexponentmod") && numparameters >= 2)
1998                                 {
1999                                         shader.specularpowermod = atof(parameter[1]);
2000                                 }
2001                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
2002                                 {
2003                                         int i, deformindex;
2004                                         for (deformindex = 0;deformindex < Q3MAXDEFORMS;deformindex++)
2005                                                 if (!shader.deforms[deformindex].deform)
2006                                                         break;
2007                                         if (deformindex < Q3MAXDEFORMS)
2008                                         {
2009                                                 for (i = 0;i < numparameters - 2 && i < Q3DEFORM_MAXPARMS;i++)
2010                                                         shader.deforms[deformindex].parms[i] = atof(parameter[i+2]);
2011                                                      if (!strcasecmp(parameter[1], "projectionshadow")) shader.deforms[deformindex].deform = Q3DEFORM_PROJECTIONSHADOW;
2012                                                 else if (!strcasecmp(parameter[1], "autosprite"      )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE;
2013                                                 else if (!strcasecmp(parameter[1], "autosprite2"     )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE2;
2014                                                 else if (!strcasecmp(parameter[1], "text0"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT0;
2015                                                 else if (!strcasecmp(parameter[1], "text1"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT1;
2016                                                 else if (!strcasecmp(parameter[1], "text2"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT2;
2017                                                 else if (!strcasecmp(parameter[1], "text3"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT3;
2018                                                 else if (!strcasecmp(parameter[1], "text4"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT4;
2019                                                 else if (!strcasecmp(parameter[1], "text5"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT5;
2020                                                 else if (!strcasecmp(parameter[1], "text6"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT6;
2021                                                 else if (!strcasecmp(parameter[1], "text7"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT7;
2022                                                 else if (!strcasecmp(parameter[1], "bulge"           )) shader.deforms[deformindex].deform = Q3DEFORM_BULGE;
2023                                                 else if (!strcasecmp(parameter[1], "normal"          )) shader.deforms[deformindex].deform = Q3DEFORM_NORMAL;
2024                                                 else if (!strcasecmp(parameter[1], "wave"            ))
2025                                                 {
2026                                                         shader.deforms[deformindex].deform = Q3DEFORM_WAVE;
2027                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[3]);
2028                                                         for (i = 0;i < numparameters - 4 && i < Q3WAVEPARMS;i++)
2029                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+4]);
2030                                                 }
2031                                                 else if (!strcasecmp(parameter[1], "move"            ))
2032                                                 {
2033                                                         shader.deforms[deformindex].deform = Q3DEFORM_MOVE;
2034                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[5]);
2035                                                         for (i = 0;i < numparameters - 6 && i < Q3WAVEPARMS;i++)
2036                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+6]);
2037                                                 }
2038                                         }
2039                                 }
2040                         }
2041                         // pick the primary layer to render with
2042                         if (shader.numlayers)
2043                         {
2044                                 shader.backgroundlayer = -1;
2045                                 shader.primarylayer = 0;
2046                                 // if lightmap comes first this is definitely an ordinary texture
2047                                 // if the first two layers have the correct blendfuncs and use vertex alpha, it is a blended terrain shader
2048                                 if ((shader.layers[shader.primarylayer].texturename != NULL)
2049                                   && !strcasecmp(shader.layers[shader.primarylayer].texturename[0], "$lightmap"))
2050                                 {
2051                                         shader.backgroundlayer = -1;
2052                                         shader.primarylayer = 1;
2053                                 }
2054                                 else if (shader.numlayers >= 2
2055                                 &&   shader.layers[1].alphagen.alphagen == Q3ALPHAGEN_VERTEX
2056                                 &&  (shader.layers[0].blendfunc[0] == GL_ONE       && shader.layers[0].blendfunc[1] == GL_ZERO                && !shader.layers[0].alphatest)
2057                                 && ((shader.layers[1].blendfunc[0] == GL_SRC_ALPHA && shader.layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
2058                                 ||  (shader.layers[1].blendfunc[0] == GL_ONE       && shader.layers[1].blendfunc[1] == GL_ZERO                &&  shader.layers[1].alphatest)))
2059                                 {
2060                                         // terrain blending or other effects
2061                                         shader.backgroundlayer = 0;
2062                                         shader.primarylayer = 1;
2063                                 }
2064                         }
2065                         // fix up multiple reflection types
2066                         if(shader.textureflags & Q3TEXTUREFLAG_WATERSHADER)
2067                                 shader.textureflags &= ~(Q3TEXTUREFLAG_REFRACTION | Q3TEXTUREFLAG_REFLECTION);
2068
2069                         Q3Shader_AddToHash (&shader);
2070                 }
2071                 Mem_Free(f);
2072         }
2073         FS_FreeSearch(search);
2074 }
2075
2076 q3shaderinfo_t *Mod_LookupQ3Shader(const char *name)
2077 {
2078         unsigned short hash;
2079         q3shader_hash_entry_t* entry;
2080         if (!q3shaders_mem)
2081                 Mod_LoadQ3Shaders();
2082         hash = CRC_Block_CaseInsensitive ((const unsigned char *)name, strlen (name));
2083         entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
2084         while (entry != NULL)
2085         {
2086                 if (strcasecmp (entry->shader.name, name) == 0)
2087                         return &entry->shader;
2088                 entry = entry->chain;
2089         }
2090         return NULL;
2091 }
2092
2093 qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qboolean warnmissing, qboolean fallback, int defaulttexflags)
2094 {
2095         int j;
2096         int texflagsmask;
2097         qboolean success = true;
2098         q3shaderinfo_t *shader;
2099         if (!name)
2100                 name = "";
2101         strlcpy(texture->name, name, sizeof(texture->name));
2102         shader = name[0] ? Mod_LookupQ3Shader(name) : NULL;
2103
2104         texflagsmask = ~0;
2105         if(!(defaulttexflags & TEXF_PICMIP))
2106                 texflagsmask &= ~TEXF_PICMIP;
2107         if(!(defaulttexflags & TEXF_COMPRESS))
2108                 texflagsmask &= ~TEXF_COMPRESS;
2109         texture->specularscalemod = 1; // unless later loaded from the shader
2110         texture->specularpowermod = 1; // unless later loaded from the shader
2111         // WHEN ADDING DEFAULTS HERE, REMEMBER TO SYNC TO SHADER LOADING ABOVE
2112         // HERE, AND Q1BSP LOADING
2113         // JUST GREP FOR "specularscalemod = 1".
2114
2115         if (shader)
2116         {
2117                 if (developer_loading.integer)
2118                         Con_Printf("%s: loaded shader for %s\n", loadmodel->name, name);
2119                 texture->surfaceparms = shader->surfaceparms;
2120
2121                 // allow disabling of picmip or compression by defaulttexflags
2122                 texture->textureflags = shader->textureflags & texflagsmask;
2123
2124                 if (shader->surfaceparms & Q3SURFACEPARM_SKY)
2125                 {
2126                         texture->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2127                         if (shader->skyboxname[0])
2128                         {
2129                                 // quake3 seems to append a _ to the skybox name, so this must do so as well
2130                                 dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
2131                         }
2132                 }
2133                 else if ((texture->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
2134                         texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2135                 else
2136                         texture->basematerialflags = MATERIALFLAG_WALL;
2137
2138                 if (shader->layers[0].alphatest)
2139                         texture->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
2140                 if (shader->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2141                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_NOCULLFACE;
2142                 if (shader->textureflags & Q3TEXTUREFLAG_POLYGONOFFSET)
2143                         texture->biaspolygonoffset -= 2;
2144                 if (shader->textureflags & Q3TEXTUREFLAG_REFRACTION)
2145                         texture->basematerialflags |= MATERIALFLAG_REFRACTION;
2146                 if (shader->textureflags & Q3TEXTUREFLAG_REFLECTION)
2147                         texture->basematerialflags |= MATERIALFLAG_REFLECTION;
2148                 if (shader->textureflags & Q3TEXTUREFLAG_WATERSHADER)
2149                         texture->basematerialflags |= MATERIALFLAG_WATERSHADER;
2150                 texture->customblendfunc[0] = GL_ONE;
2151                 texture->customblendfunc[1] = GL_ZERO;
2152                 if (shader->numlayers > 0)
2153                 {
2154                         texture->customblendfunc[0] = shader->layers[0].blendfunc[0];
2155                         texture->customblendfunc[1] = shader->layers[0].blendfunc[1];
2156 /*
2157 Q3 shader blendfuncs actually used in the game (* = supported by DP)
2158 * additive               GL_ONE GL_ONE
2159 additive weird         GL_ONE GL_SRC_ALPHA
2160 additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
2161 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
2162 alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
2163 brighten               GL_DST_COLOR GL_ONE
2164 brighten               GL_ONE GL_SRC_COLOR
2165 brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
2166 brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
2167 * modulate               GL_DST_COLOR GL_ZERO
2168 * modulate               GL_ZERO GL_SRC_COLOR
2169 modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
2170 modulate inverse alpha GL_ZERO GL_SRC_ALPHA
2171 modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
2172 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
2173 * no blend               GL_ONE GL_ZERO
2174 nothing                GL_ZERO GL_ONE
2175 */
2176                         // if not opaque, figure out what blendfunc to use
2177                         if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
2178                         {
2179                                 if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
2180                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2181                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
2182                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2183                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
2184                                         texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2185                                 else
2186                                         texture->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2187                         }
2188                 }
2189                 if (!shader->lighting)
2190                         texture->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
2191                 if (shader->primarylayer >= 0)
2192                 {
2193                         q3shaderinfo_layer_t* primarylayer = shader->layers + shader->primarylayer;
2194                         // copy over many primarylayer parameters
2195                         texture->rgbgen = primarylayer->rgbgen;
2196                         texture->alphagen = primarylayer->alphagen;
2197                         texture->tcgen = primarylayer->tcgen;
2198                         memcpy(texture->tcmods, primarylayer->tcmods, sizeof(texture->tcmods));
2199                         // load the textures
2200                         texture->numskinframes = primarylayer->numframes;
2201                         texture->skinframerate = primarylayer->framerate;
2202                         for (j = 0;j < primarylayer->numframes;j++)
2203                         {
2204                                 if(cls.state == ca_dedicated)
2205                                 {
2206                                         texture->skinframes[j] = NULL;
2207                                 }
2208                                 else if (!(texture->skinframes[j] = R_SkinFrame_LoadExternal(primarylayer->texturename[j], primarylayer->texflags & texflagsmask, false)))
2209                                 {
2210                                         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);
2211                                         texture->skinframes[j] = R_SkinFrame_LoadMissing();
2212                                 }
2213                         }
2214                 }
2215                 if (shader->backgroundlayer >= 0)
2216                 {
2217                         q3shaderinfo_layer_t* backgroundlayer = shader->layers + shader->backgroundlayer;
2218                         // copy over one secondarylayer parameter
2219                         memcpy(texture->backgroundtcmods, backgroundlayer->tcmods, sizeof(texture->backgroundtcmods));
2220                         // load the textures
2221                         texture->backgroundnumskinframes = backgroundlayer->numframes;
2222                         texture->backgroundskinframerate = backgroundlayer->framerate;
2223                         for (j = 0;j < backgroundlayer->numframes;j++)
2224                         {
2225                                 if(cls.state == ca_dedicated)
2226                                 {
2227                                         texture->skinframes[j] = NULL;
2228                                 }
2229                                 else if (!(texture->backgroundskinframes[j] = R_SkinFrame_LoadExternal(backgroundlayer->texturename[j], backgroundlayer->texflags & texflagsmask, false)))
2230                                 {
2231                                         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);
2232                                         texture->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
2233                                 }
2234                         }
2235                 }
2236                 if (shader->dpshadow)
2237                         texture->basematerialflags &= ~MATERIALFLAG_NOSHADOW;
2238                 if (shader->dpnoshadow)
2239                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW;
2240                 memcpy(texture->deforms, shader->deforms, sizeof(texture->deforms));
2241                 texture->reflectmin = shader->reflectmin;
2242                 texture->reflectmax = shader->reflectmax;
2243                 texture->refractfactor = shader->refractfactor;
2244                 Vector4Copy(shader->refractcolor4f, texture->refractcolor4f);
2245                 texture->reflectfactor = shader->reflectfactor;
2246                 Vector4Copy(shader->reflectcolor4f, texture->reflectcolor4f);
2247                 texture->r_water_wateralpha = shader->r_water_wateralpha;
2248                 texture->specularscalemod = shader->specularscalemod;
2249                 texture->specularpowermod = shader->specularpowermod;
2250                 if (shader->dpreflectcube[0])
2251                         texture->reflectcubetexture = R_GetCubemap(shader->dpreflectcube);
2252         }
2253         else if (!strcmp(texture->name, "noshader") || !texture->name[0])
2254         {
2255                 if (developer_extra.integer)
2256                         Con_DPrintf("^1%s:^7 using fallback noshader material for ^3\"%s\"\n", loadmodel->name, name);
2257                 texture->surfaceparms = 0;
2258         }
2259         else if (!strcmp(texture->name, "common/nodraw") || !strcmp(texture->name, "textures/common/nodraw"))
2260         {
2261                 if (developer_extra.integer)
2262                         Con_DPrintf("^1%s:^7 using fallback nodraw material for ^3\"%s\"\n", loadmodel->name, name);
2263                 texture->surfaceparms = 0;
2264                 texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2265         }
2266         else
2267         {
2268                 if (developer_extra.integer)
2269                         Con_DPrintf("^1%s:^7 No shader found for texture ^3\"%s\"\n", loadmodel->name, texture->name);
2270                 texture->surfaceparms = 0;
2271                 if (texture->surfaceflags & Q3SURFACEFLAG_NODRAW)
2272                         texture->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2273                 else if (texture->surfaceflags & Q3SURFACEFLAG_SKY)
2274                         texture->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2275                 else
2276                         texture->basematerialflags |= MATERIALFLAG_WALL;
2277                 texture->numskinframes = 1;
2278                 if(cls.state == ca_dedicated)
2279                 {
2280                         texture->skinframes[0] = NULL;
2281                 }
2282                 else
2283                 {
2284                         if (fallback)
2285                         {
2286                                 if ((texture->skinframes[0] = R_SkinFrame_LoadExternal(texture->name, defaulttexflags, false)))
2287                                 {
2288                                         if(texture->skinframes[0]->hasalpha)
2289                                                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2290                                 }
2291                                 else
2292                                         success = false;
2293                         }
2294                         else
2295                                 success = false;
2296                         if (!success && warnmissing)
2297                                 Con_Printf("^1%s:^7 could not load texture ^3\"%s\"\n", loadmodel->name, texture->name);
2298                 }
2299         }
2300         // init the animation variables
2301         texture->currentframe = texture;
2302         if (texture->numskinframes < 1)
2303                 texture->numskinframes = 1;
2304         if (!texture->skinframes[0])
2305                 texture->skinframes[0] = R_SkinFrame_LoadMissing();
2306         texture->currentskinframe = texture->skinframes[0];
2307         texture->backgroundcurrentskinframe = texture->backgroundskinframes[0];
2308         return success;
2309 }
2310
2311 skinfile_t *Mod_LoadSkinFiles(void)
2312 {
2313         int i, words, line, wordsoverflow;
2314         char *text;
2315         const char *data;
2316         skinfile_t *skinfile = NULL, *first = NULL;
2317         skinfileitem_t *skinfileitem;
2318         char word[10][MAX_QPATH];
2319
2320 /*
2321 sample file:
2322 U_bodyBox,models/players/Legoman/BikerA2.tga
2323 U_RArm,models/players/Legoman/BikerA1.tga
2324 U_LArm,models/players/Legoman/BikerA1.tga
2325 U_armor,common/nodraw
2326 U_sword,common/nodraw
2327 U_shield,common/nodraw
2328 U_homb,common/nodraw
2329 U_backpack,common/nodraw
2330 U_colcha,common/nodraw
2331 tag_head,
2332 tag_weapon,
2333 tag_torso,
2334 */
2335         memset(word, 0, sizeof(word));
2336         for (i = 0;i < 256 && (data = text = (char *)FS_LoadFile(va("%s_%i.skin", loadmodel->name, i), tempmempool, true, NULL));i++)
2337         {
2338                 // If it's the first file we parse
2339                 if (skinfile == NULL)
2340                 {
2341                         skinfile = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2342                         first = skinfile;
2343                 }
2344                 else
2345                 {
2346                         skinfile->next = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2347                         skinfile = skinfile->next;
2348                 }
2349                 skinfile->next = NULL;
2350
2351                 for(line = 0;;line++)
2352                 {
2353                         // parse line
2354                         if (!COM_ParseToken_QuakeC(&data, true))
2355                                 break;
2356                         if (!strcmp(com_token, "\n"))
2357                                 continue;
2358                         words = 0;
2359                         wordsoverflow = false;
2360                         do
2361                         {
2362                                 if (words < 10)
2363                                         strlcpy(word[words++], com_token, sizeof (word[0]));
2364                                 else
2365                                         wordsoverflow = true;
2366                         }
2367                         while (COM_ParseToken_QuakeC(&data, true) && strcmp(com_token, "\n"));
2368                         if (wordsoverflow)
2369                         {
2370                                 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);
2371                                 continue;
2372                         }
2373                         // words is always >= 1
2374                         if (!strcmp(word[0], "replace"))
2375                         {
2376                                 if (words == 3)
2377                                 {
2378                                         if (developer_loading.integer)
2379                                                 Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[1], word[2]);
2380                                         skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2381                                         skinfileitem->next = skinfile->items;
2382                                         skinfile->items = skinfileitem;
2383                                         strlcpy (skinfileitem->name, word[1], sizeof (skinfileitem->name));
2384                                         strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2385                                 }
2386                                 else
2387                                         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]);
2388                         }
2389                         else if (words >= 2 && !strncmp(word[0], "tag_", 4))
2390                         {
2391                                 // tag name, like "tag_weapon,"
2392                                 // not used for anything (not even in Quake3)
2393                         }
2394                         else if (words >= 2 && !strcmp(word[1], ","))
2395                         {
2396                                 // mesh shader name, like "U_RArm,models/players/Legoman/BikerA1.tga"
2397                                 if (developer_loading.integer)
2398                                         Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[0], word[2]);
2399                                 skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2400                                 skinfileitem->next = skinfile->items;
2401                                 skinfile->items = skinfileitem;
2402                                 strlcpy (skinfileitem->name, word[0], sizeof (skinfileitem->name));
2403                                 strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2404                         }
2405                         else
2406                                 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);
2407                 }
2408                 Mem_Free(text);
2409         }
2410         if (i)
2411                 loadmodel->numskins = i;
2412         return first;
2413 }
2414
2415 void Mod_FreeSkinFiles(skinfile_t *skinfile)
2416 {
2417         skinfile_t *next;
2418         skinfileitem_t *skinfileitem, *nextitem;
2419         for (;skinfile;skinfile = next)
2420         {
2421                 next = skinfile->next;
2422                 for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = nextitem)
2423                 {
2424                         nextitem = skinfileitem->next;
2425                         Mem_Free(skinfileitem);
2426                 }
2427                 Mem_Free(skinfile);
2428         }
2429 }
2430
2431 int Mod_CountSkinFiles(skinfile_t *skinfile)
2432 {
2433         int i;
2434         for (i = 0;skinfile;skinfile = skinfile->next, i++);
2435         return i;
2436 }
2437
2438 void Mod_SnapVertices(int numcomponents, int numvertices, float *vertices, float snap)
2439 {
2440         int i;
2441         double isnap = 1.0 / snap;
2442         for (i = 0;i < numvertices*numcomponents;i++)
2443                 vertices[i] = floor(vertices[i]*isnap)*snap;
2444 }
2445
2446 int Mod_RemoveDegenerateTriangles(int numtriangles, const int *inelement3i, int *outelement3i, const float *vertex3f)
2447 {
2448         int i, outtriangles;
2449         float edgedir1[3], edgedir2[3], temp[3];
2450         // a degenerate triangle is one with no width (thickness, surface area)
2451         // these are characterized by having all 3 points colinear (along a line)
2452         // or having two points identical
2453         // the simplest check is to calculate the triangle's area
2454         for (i = 0, outtriangles = 0;i < numtriangles;i++, inelement3i += 3)
2455         {
2456                 // calculate first edge
2457                 VectorSubtract(vertex3f + inelement3i[1] * 3, vertex3f + inelement3i[0] * 3, edgedir1);
2458                 VectorSubtract(vertex3f + inelement3i[2] * 3, vertex3f + inelement3i[0] * 3, edgedir2);
2459                 CrossProduct(edgedir1, edgedir2, temp);
2460                 if (VectorLength2(temp) < 0.001f)
2461                         continue; // degenerate triangle (no area)
2462                 // valid triangle (has area)
2463                 VectorCopy(inelement3i, outelement3i);
2464                 outelement3i += 3;
2465                 outtriangles++;
2466         }
2467         return outtriangles;
2468 }
2469
2470 void Mod_VertexRangeFromElements(int numelements, const int *elements, int *firstvertexpointer, int *lastvertexpointer)
2471 {
2472         int i, e;
2473         int firstvertex, lastvertex;
2474         if (numelements > 0 && elements)
2475         {
2476                 firstvertex = lastvertex = elements[0];
2477                 for (i = 1;i < numelements;i++)
2478                 {
2479                         e = elements[i];
2480                         firstvertex = min(firstvertex, e);
2481                         lastvertex = max(lastvertex, e);
2482                 }
2483         }
2484         else
2485                 firstvertex = lastvertex = 0;
2486         if (firstvertexpointer)
2487                 *firstvertexpointer = firstvertex;
2488         if (lastvertexpointer)
2489                 *lastvertexpointer = lastvertex;
2490 }
2491
2492 void Mod_MakeSortedSurfaces(dp_model_t *mod)
2493 {
2494         // make an optimal set of texture-sorted batches to draw...
2495         int j, t;
2496         int *firstsurfacefortexture;
2497         int *numsurfacesfortexture;
2498         if (!mod->sortedmodelsurfaces)
2499                 mod->sortedmodelsurfaces = (int *) Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
2500         firstsurfacefortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*firstsurfacefortexture));
2501         numsurfacesfortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*numsurfacesfortexture));
2502         memset(numsurfacesfortexture, 0, mod->num_textures * sizeof(*numsurfacesfortexture));
2503         for (j = 0;j < mod->nummodelsurfaces;j++)
2504         {
2505                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2506                 int t = (int)(surface->texture - mod->data_textures);
2507                 numsurfacesfortexture[t]++;
2508         }
2509         j = 0;
2510         for (t = 0;t < mod->num_textures;t++)
2511         {
2512                 firstsurfacefortexture[t] = j;
2513                 j += numsurfacesfortexture[t];
2514         }
2515         for (j = 0;j < mod->nummodelsurfaces;j++)
2516         {
2517                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2518                 int t = (int)(surface->texture - mod->data_textures);
2519                 mod->sortedmodelsurfaces[firstsurfacefortexture[t]++] = j + mod->firstmodelsurface;
2520         }
2521         Mem_Free(firstsurfacefortexture);
2522         Mem_Free(numsurfacesfortexture);
2523 }
2524
2525 void Mod_BuildVBOs(void)
2526 {
2527         if (gl_paranoid.integer && loadmodel->surfmesh.data_element3s && loadmodel->surfmesh.data_element3i)
2528         {
2529                 int i;
2530                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2531                 {
2532                         if (loadmodel->surfmesh.data_element3s[i] != loadmodel->surfmesh.data_element3i[i])
2533                         {
2534                                 Con_Printf("Mod_BuildVBOs: element %u is incorrect (%u should be %u)\n", i, loadmodel->surfmesh.data_element3s[i], loadmodel->surfmesh.data_element3i[i]);
2535                                 loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2536                         }
2537                 }
2538         }
2539
2540         if (!vid.support.arb_vertex_buffer_object)
2541                 return;
2542         // only build a vbo if one has not already been created (this is important for brush models which load specially)
2543         if (loadmodel->surfmesh.vbo)
2544                 return;
2545
2546         // element buffer is easy because it's just one array
2547         if (loadmodel->surfmesh.num_triangles)
2548         {
2549                 if (loadmodel->surfmesh.data_element3s)
2550                         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);
2551                 else
2552                         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);
2553         }
2554
2555         // vertex buffer is several arrays and we put them in the same buffer
2556         //
2557         // is this wise?  the texcoordtexture2f array is used with dynamic
2558         // vertex/svector/tvector/normal when rendering animated models, on the
2559         // other hand animated models don't use a lot of vertices anyway...
2560         if (loadmodel->surfmesh.num_vertices)
2561         {
2562                 size_t size;
2563                 unsigned char *mem;
2564                 size = 0;
2565                 loadmodel->surfmesh.vbooffset_vertex3f           = size;if (loadmodel->surfmesh.data_vertex3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2566                 loadmodel->surfmesh.vbooffset_svector3f          = size;if (loadmodel->surfmesh.data_svector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2567                 loadmodel->surfmesh.vbooffset_tvector3f          = size;if (loadmodel->surfmesh.data_tvector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2568                 loadmodel->surfmesh.vbooffset_normal3f           = size;if (loadmodel->surfmesh.data_normal3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2569                 loadmodel->surfmesh.vbooffset_texcoordtexture2f  = size;if (loadmodel->surfmesh.data_texcoordtexture2f ) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2570                 loadmodel->surfmesh.vbooffset_texcoordlightmap2f = size;if (loadmodel->surfmesh.data_texcoordlightmap2f) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2571                 loadmodel->surfmesh.vbooffset_lightmapcolor4f    = size;if (loadmodel->surfmesh.data_lightmapcolor4f   ) size += loadmodel->surfmesh.num_vertices * sizeof(float[4]);
2572                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
2573                 if (loadmodel->surfmesh.data_vertex3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_vertex3f          , loadmodel->surfmesh.data_vertex3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2574                 if (loadmodel->surfmesh.data_svector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_svector3f         , loadmodel->surfmesh.data_svector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2575                 if (loadmodel->surfmesh.data_tvector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_tvector3f         , loadmodel->surfmesh.data_tvector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2576                 if (loadmodel->surfmesh.data_normal3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_normal3f          , loadmodel->surfmesh.data_normal3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2577                 if (loadmodel->surfmesh.data_texcoordtexture2f ) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordtexture2f , loadmodel->surfmesh.data_texcoordtexture2f , loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2578                 if (loadmodel->surfmesh.data_texcoordlightmap2f) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordlightmap2f, loadmodel->surfmesh.data_texcoordlightmap2f, loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2579                 if (loadmodel->surfmesh.data_lightmapcolor4f   ) memcpy(mem + loadmodel->surfmesh.vbooffset_lightmapcolor4f   , loadmodel->surfmesh.data_lightmapcolor4f   , loadmodel->surfmesh.num_vertices * sizeof(float[4]));
2580                 loadmodel->surfmesh.vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, loadmodel->name);
2581                 Mem_Free(mem);
2582         }
2583 }
2584
2585 static void Mod_Decompile_OBJ(dp_model_t *model, const char *filename, const char *mtlfilename, const char *originalfilename)
2586 {
2587         int vertexindex, surfaceindex, triangleindex, textureindex, countvertices = 0, countsurfaces = 0, countfaces = 0, counttextures = 0;
2588         int a, b, c;
2589         const char *texname;
2590         const int *e;
2591         const float *v, *vn, *vt;
2592         size_t l;
2593         size_t outbufferpos = 0;
2594         size_t outbuffermax = 0x100000;
2595         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2596         const msurface_t *surface;
2597         const int maxtextures = 256;
2598         char *texturenames = (char *) Z_Malloc(maxtextures * MAX_QPATH);
2599
2600         // construct the mtllib file
2601         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "# mtllib for %s exported by darkplaces engine\n", originalfilename);
2602         if (l > 0)
2603                 outbufferpos += l;
2604         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2605         {
2606                 countsurfaces++;
2607                 countvertices += surface->num_vertices;
2608                 countfaces += surface->num_triangles;
2609                 texname = (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default";
2610                 for (textureindex = 0;textureindex < counttextures;textureindex++)
2611                         if (!strcmp(texturenames + textureindex * MAX_QPATH, texname))
2612                                 break;
2613                 if (textureindex < counttextures)
2614                         continue; // already wrote this material entry
2615                 if (textureindex >= maxtextures)
2616                         continue; // just a precaution
2617                 textureindex = counttextures++;
2618                 strlcpy(texturenames + textureindex * MAX_QPATH, texname, MAX_QPATH);
2619                 if (outbufferpos >= outbuffermax >> 1)
2620                 {
2621                         outbuffermax *= 2;
2622                         oldbuffer = outbuffer;
2623                         outbuffer = (char *) Z_Malloc(outbuffermax);
2624                         memcpy(outbuffer, oldbuffer, outbufferpos);
2625                         Z_Free(oldbuffer);
2626                 }
2627                 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");
2628                 if (l > 0)
2629                         outbufferpos += l;
2630         }
2631
2632         // write the mtllib file
2633         FS_WriteFile(mtlfilename, outbuffer, outbufferpos);
2634         outbufferpos = 0;
2635
2636         // construct the obj file
2637         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);
2638         if (l > 0)
2639                 outbufferpos += l;
2640         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)
2641         {
2642                 if (outbufferpos >= outbuffermax >> 1)
2643                 {
2644                         outbuffermax *= 2;
2645                         oldbuffer = outbuffer;
2646                         outbuffer = (char *) Z_Malloc(outbuffermax);
2647                         memcpy(outbuffer, oldbuffer, outbufferpos);
2648                         Z_Free(oldbuffer);
2649                 }
2650                 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]);
2651                 if (l > 0)
2652                         outbufferpos += l;
2653         }
2654         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2655         {
2656                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "usemtl %s\n", (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default");
2657                 if (l > 0)
2658                         outbufferpos += l;
2659                 for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2660                 {
2661                         if (outbufferpos >= outbuffermax >> 1)
2662                         {
2663                                 outbuffermax *= 2;
2664                                 oldbuffer = outbuffer;
2665                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2666                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2667                                 Z_Free(oldbuffer);
2668                         }
2669                         a = e[0]+1;
2670                         b = e[2]+1;
2671                         c = e[1]+1;
2672                         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);
2673                         if (l > 0)
2674                                 outbufferpos += l;
2675                 }
2676         }
2677
2678         // write the obj file
2679         FS_WriteFile(filename, outbuffer, outbufferpos);
2680
2681         // clean up
2682         Z_Free(outbuffer);
2683         Z_Free(texturenames);
2684
2685         // print some stats
2686         Con_Printf("Wrote %s (%i bytes, %i vertices, %i faces, %i surfaces with %i distinct textures)\n", filename, (int)outbufferpos, countvertices, countfaces, countsurfaces, counttextures);
2687 }
2688
2689 static void Mod_Decompile_SMD(dp_model_t *model, const char *filename, int firstpose, int numposes, qboolean writetriangles)
2690 {
2691         int countnodes = 0, counttriangles = 0, countframes = 0;
2692         int surfaceindex;
2693         int triangleindex;
2694         int transformindex;
2695         int poseindex;
2696         int cornerindex;
2697         const int *e;
2698         size_t l;
2699         size_t outbufferpos = 0;
2700         size_t outbuffermax = 0x100000;
2701         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2702         const msurface_t *surface;
2703         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "version 1\nnodes\n");
2704         if (l > 0)
2705                 outbufferpos += l;
2706         for (transformindex = 0;transformindex < model->num_bones;transformindex++)
2707         {
2708                 if (outbufferpos >= outbuffermax >> 1)
2709                 {
2710                         outbuffermax *= 2;
2711                         oldbuffer = outbuffer;
2712                         outbuffer = (char *) Z_Malloc(outbuffermax);
2713                         memcpy(outbuffer, oldbuffer, outbufferpos);
2714                         Z_Free(oldbuffer);
2715                 }
2716                 countnodes++;
2717                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i \"%s\" %3i\n", transformindex, model->data_bones[transformindex].name, model->data_bones[transformindex].parent);
2718                 if (l > 0)
2719                         outbufferpos += l;
2720         }
2721         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\nskeleton\n");
2722         if (l > 0)
2723                 outbufferpos += l;
2724         for (poseindex = 0;poseindex < numposes;poseindex++)
2725         {
2726                 countframes++;
2727                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "time %i\n", poseindex);
2728                 if (l > 0)
2729                         outbufferpos += l;
2730                 for (transformindex = 0;transformindex < model->num_bones;transformindex++)
2731                 {
2732                         float angles[3];
2733                         float mtest[4][3];
2734                         matrix4x4_t posematrix;
2735                         if (outbufferpos >= outbuffermax >> 1)
2736                         {
2737                                 outbuffermax *= 2;
2738                                 oldbuffer = outbuffer;
2739                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2740                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2741                                 Z_Free(oldbuffer);
2742                         }
2743
2744                         // strangely the smd angles are for a transposed matrix, so we
2745                         // have to generate a transposed matrix, then convert that...
2746                         Matrix4x4_FromBonePose6s(&posematrix, model->num_posescale, model->data_poses6s + 6*(model->num_bones * poseindex + transformindex));
2747                         Matrix4x4_ToArray12FloatGL(&posematrix, mtest[0]);
2748                         AnglesFromVectors(angles, mtest[0], mtest[2], false);
2749                         if (angles[0] >= 180) angles[0] -= 360;
2750                         if (angles[1] >= 180) angles[1] -= 360;
2751                         if (angles[2] >= 180) angles[2] -= 360;
2752
2753 #if 0
2754 {
2755                         float a = DEG2RAD(angles[ROLL]);
2756                         float b = DEG2RAD(angles[PITCH]);
2757                         float c = DEG2RAD(angles[YAW]);
2758                         float cy, sy, cp, sp, cr, sr;
2759                         float test[4][3];
2760                         // smd matrix construction, for comparing
2761                         sy = sin(c);
2762                         cy = cos(c);
2763                         sp = sin(b);
2764                         cp = cos(b);
2765                         sr = sin(a);
2766                         cr = cos(a);
2767
2768                         test[0][0] = cp*cy;
2769                         test[0][1] = cp*sy;
2770                         test[0][2] = -sp;
2771                         test[1][0] = sr*sp*cy+cr*-sy;
2772                         test[1][1] = sr*sp*sy+cr*cy;
2773                         test[1][2] = sr*cp;
2774                         test[2][0] = (cr*sp*cy+-sr*-sy);
2775                         test[2][1] = (cr*sp*sy+-sr*cy);
2776                         test[2][2] = cr*cp;
2777                         test[3][0] = pose[9];
2778                         test[3][1] = pose[10];
2779                         test[3][2] = pose[11];
2780 }
2781 #endif
2782                         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]));
2783                         if (l > 0)
2784                                 outbufferpos += l;
2785                 }
2786         }
2787         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
2788         if (l > 0)
2789                 outbufferpos += l;
2790         if (writetriangles)
2791         {
2792                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "triangles\n");
2793                 if (l > 0)
2794                         outbufferpos += l;
2795                 for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2796                 {
2797                         for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2798                         {
2799                                 counttriangles++;
2800                                 if (outbufferpos >= outbuffermax >> 1)
2801                                 {
2802                                         outbuffermax *= 2;
2803                                         oldbuffer = outbuffer;
2804                                         outbuffer = (char *) Z_Malloc(outbuffermax);
2805                                         memcpy(outbuffer, oldbuffer, outbufferpos);
2806                                         Z_Free(oldbuffer);
2807                                 }
2808                                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%s\n", surface->texture && surface->texture->name[0] ? surface->texture->name : "default.bmp");
2809                                 if (l > 0)
2810                                         outbufferpos += l;
2811                                 for (cornerindex = 0;cornerindex < 3;cornerindex++)
2812                                 {
2813                                         const int index = e[2-cornerindex];
2814                                         const float *v = model->surfmesh.data_vertex3f + index * 3;
2815                                         const float *vn = model->surfmesh.data_normal3f + index * 3;
2816                                         const float *vt = model->surfmesh.data_texcoordtexture2f + index * 2;
2817                                         const int *wi = model->surfmesh.data_vertexweightindex4i + index * 4;
2818                                         const float *wf = model->surfmesh.data_vertexweightinfluence4f + index * 4;
2819                                              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]);
2820                                         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]);
2821                                         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]);
2822                                         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]);
2823                                         if (l > 0)
2824                                                 outbufferpos += l;
2825                                 }
2826                         }
2827                 }
2828                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
2829                 if (l > 0)
2830                         outbufferpos += l;
2831         }
2832
2833         FS_WriteFile(filename, outbuffer, outbufferpos);
2834         Z_Free(outbuffer);
2835
2836         Con_Printf("Wrote %s (%i bytes, %i nodes, %i frames, %i triangles)\n", filename, (int)outbufferpos, countnodes, countframes, counttriangles);
2837 }
2838
2839 /*
2840 ================
2841 Mod_Decompile_f
2842
2843 decompiles a model to editable files
2844 ================
2845 */
2846 static void Mod_Decompile_f(void)
2847 {
2848         int i, j, k, l, first, count;
2849         dp_model_t *mod;
2850         char inname[MAX_QPATH];
2851         char outname[MAX_QPATH];
2852         char mtlname[MAX_QPATH];
2853         char basename[MAX_QPATH];
2854         char animname[MAX_QPATH];
2855         char animname2[MAX_QPATH];
2856         char zymtextbuffer[16384];
2857         char dpmtextbuffer[16384];
2858         int zymtextsize = 0;
2859         int dpmtextsize = 0;
2860
2861         if (Cmd_Argc() != 2)
2862         {
2863                 Con_Print("usage: modeldecompile <filename>\n");
2864                 return;
2865         }
2866
2867         strlcpy(inname, Cmd_Argv(1), sizeof(inname));
2868         FS_StripExtension(inname, basename, sizeof(basename));
2869
2870         mod = Mod_ForName(inname, false, true, inname[0] == '*' ? cl.model_name[1] : NULL);
2871         if (mod->brush.submodel)
2872         {
2873                 // if we're decompiling a submodel, be sure to give it a proper name based on its parent
2874                 FS_StripExtension(cl.model_name[1], outname, sizeof(outname));
2875                 dpsnprintf(basename, sizeof(basename), "%s/%s", outname, mod->name);
2876                 outname[0] = 0;
2877         }
2878         if (!mod)
2879         {
2880                 Con_Print("No such model\n");
2881                 return;
2882         }
2883         if (!mod->surfmesh.num_triangles)
2884         {
2885                 Con_Print("Empty model (or sprite)\n");
2886                 return;
2887         }
2888
2889         // export OBJ if possible (not on sprites)
2890         if (mod->surfmesh.num_triangles)
2891         {
2892                 dpsnprintf(outname, sizeof(outname), "%s_decompiled.obj", basename);
2893                 dpsnprintf(mtlname, sizeof(mtlname), "%s_decompiled.mtl", basename);
2894                 Mod_Decompile_OBJ(mod, outname, mtlname, inname);
2895         }
2896
2897         // export SMD if possible (only for skeletal models)
2898         if (mod->surfmesh.num_triangles && mod->num_bones)
2899         {
2900                 dpsnprintf(outname, sizeof(outname), "%s_decompiled/ref1.smd", basename);
2901                 Mod_Decompile_SMD(mod, outname, 0, 1, true);
2902                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "output out.zym\nscale 1\norigin 0 0 0\nmesh ref1.smd\n");
2903                 if (l > 0) zymtextsize += l;
2904                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "outputdir .\nmodel out\nscale 1\norigin 0 0 0\nscene ref1.smd\n");
2905                 if (l > 0) dpmtextsize += l;
2906                 for (i = 0;i < mod->numframes;i = j)
2907                 {
2908                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
2909                         first = mod->animscenes[i].firstframe;
2910                         if (mod->animscenes[i].framecount > 1)
2911                         {
2912                                 // framegroup anim
2913                                 count = mod->animscenes[i].framecount;
2914                                 j = i + 1;
2915                         }
2916                         else
2917                         {
2918                                 // individual frame
2919                                 // check for additional frames with same name
2920                                 for (l = 0, k = strlen(animname);animname[l];l++)
2921                                         if ((animname[l] < '0' || animname[l] > '9') && animname[l] != '_')
2922                                                 k = l + 1;
2923                                 animname[k] = 0;
2924                                 count = mod->num_poses - first;
2925                                 for (j = i + 1;j < mod->numframes;j++)
2926                                 {
2927                                         strlcpy(animname2, mod->animscenes[j].name, sizeof(animname2));
2928                                         for (l = 0, k = strlen(animname2);animname2[l];l++)
2929                                                 if ((animname2[l] < '0' || animname2[l] > '9') && animname2[l] != '_')
2930                                                         k = l + 1;
2931                                         animname2[k] = 0;
2932                                         if (strcmp(animname2, animname) || mod->animscenes[j].framecount > 1)
2933                                         {
2934                                                 count = mod->animscenes[j].firstframe - first;
2935                                                 break;
2936                                         }
2937                                 }
2938                                 // if it's only one frame, use the original frame name
2939                                 if (j == i + 1)
2940                                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
2941
2942                         }
2943                         dpsnprintf(outname, sizeof(outname), "%s_decompiled/%s.smd", basename, animname);
2944                         Mod_Decompile_SMD(mod, outname, first, count, false);
2945                         if (zymtextsize < (int)sizeof(zymtextbuffer) - 100)
2946                         {
2947                                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "scene %s.smd fps %g\n", animname, mod->animscenes[i].framerate);
2948                                 if (l > 0) zymtextsize += l;
2949                         }
2950                         if (dpmtextsize < (int)sizeof(dpmtextbuffer) - 100)
2951                         {
2952                                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "scene %s.smd\n", animname);
2953                                 if (l > 0) dpmtextsize += l;
2954                         }
2955                 }
2956                 if (zymtextsize)
2957                         FS_WriteFile(va("%s_decompiled/out_zym.txt", basename), zymtextbuffer, (fs_offset_t)zymtextsize);
2958                 if (dpmtextsize)
2959                         FS_WriteFile(va("%s_decompiled/out_dpm.txt", basename), dpmtextbuffer, (fs_offset_t)dpmtextsize);
2960         }
2961 }
2962
2963 void Mod_AllocLightmap_Init(mod_alloclightmap_state_t *state, int width, int height)
2964 {
2965         int y;
2966         memset(state, 0, sizeof(*state));
2967         state->width = width;
2968         state->height = height;
2969         state->currentY = 0;
2970         state->rows = Mem_Alloc(loadmodel->mempool, state->height * sizeof(*state->rows));
2971         for (y = 0;y < state->height;y++)
2972         {
2973                 state->rows[y].currentX = 0;
2974                 state->rows[y].rowY = -1;
2975         }
2976 }
2977
2978 void Mod_AllocLightmap_Reset(mod_alloclightmap_state_t *state)
2979 {
2980         int y;
2981         state->currentY = 0;
2982         for (y = 0;y < state->height;y++)
2983         {
2984                 state->rows[y].currentX = 0;
2985                 state->rows[y].rowY = -1;
2986         }
2987 }
2988
2989 void Mod_AllocLightmap_Free(mod_alloclightmap_state_t *state)
2990 {
2991         if (state->rows)
2992                 Mem_Free(state->rows);
2993         memset(state, 0, sizeof(*state));
2994 }
2995
2996 qboolean Mod_AllocLightmap_Block(mod_alloclightmap_state_t *state, int blockwidth, int blockheight, int *outx, int *outy)
2997 {
2998         mod_alloclightmap_row_t *row;
2999         int y;
3000
3001         row = state->rows + blockheight;
3002         if ((row->rowY < 0) || (row->currentX + blockwidth > state->width))
3003         {
3004                 if (state->currentY + blockheight <= state->height)
3005                 {
3006                         // use the current allocation position
3007                         row->rowY = state->currentY;
3008                         row->currentX = 0;
3009                         state->currentY += blockheight;
3010                 }
3011                 else
3012                 {
3013                         // find another position
3014                         for (y = blockheight;y < state->height;y++)
3015                         {
3016                                 if ((state->rows[y].rowY >= 0) && (state->rows[y].currentX + blockwidth <= state->width))
3017                                 {
3018                                         row = state->rows + y;
3019                                         break;
3020                                 }
3021                         }
3022                         if (y == state->height)
3023                                 return false;
3024                 }
3025         }
3026         *outy = row->rowY;
3027         *outx = row->currentX;
3028         row->currentX += blockwidth;
3029
3030         return true;
3031 }
3032
3033 typedef struct lightmapsample_s
3034 {
3035         float pos[3];
3036         float sh1[4][3];
3037         float *vertex_color;
3038         unsigned char *lm_bgr;
3039         unsigned char *lm_dir;
3040 }
3041 lightmapsample_t;
3042
3043 typedef struct lightmapvertex_s
3044 {
3045         int index;
3046         float pos[3];
3047         float normal[3];
3048         float texcoordbase[2];
3049         float texcoordlightmap[2];
3050         float lightcolor[4];
3051 }
3052 lightmapvertex_t;
3053
3054 typedef struct lightmaptriangle_s
3055 {
3056         int triangleindex;
3057         int surfaceindex;
3058         int lightmapindex;
3059         int axis;
3060         int lmoffset[2];
3061         int lmsize[2];
3062         // 2D modelspace coordinates of min corner
3063         // snapped to lightmap grid but not in grid coordinates
3064         float lmbase[2];
3065         // 2D modelspace to lightmap coordinate scale
3066         float lmscale[2];
3067         float vertex[3][3];
3068         float mins[3];
3069         float maxs[3];
3070 }
3071 lightmaptriangle_t;
3072
3073 typedef struct lightmaplight_s
3074 {
3075         float origin[3];
3076         float radius;
3077         float iradius;
3078         float radius2;
3079         float color[3];
3080         svbsp_t svbsp;
3081 }
3082 lightmaplight_t;
3083
3084 lightmaptriangle_t *mod_generatelightmaps_lightmaptriangles;
3085
3086 #define MAX_LIGHTMAPSAMPLES 64
3087 static int mod_generatelightmaps_numoffsets[3];
3088 static float mod_generatelightmaps_offsets[3][MAX_LIGHTMAPSAMPLES][3];
3089
3090 static int mod_generatelightmaps_numlights;
3091 static lightmaplight_t *mod_generatelightmaps_lightinfo;
3092
3093 extern int R_Shadow_GetRTLightInfo(unsigned int lightindex, float *origin, float *radius, float *color);
3094 extern cvar_t r_shadow_lightattenuationdividebias;
3095 extern cvar_t r_shadow_lightattenuationlinearscale;
3096
3097 static void Mod_GenerateLightmaps_LightPoint(dp_model_t *model, const vec3_t pos, vec3_t ambient, vec3_t diffuse, vec3_t lightdir)
3098 {
3099         int i;
3100         int index;
3101         int result;
3102         float relativepoint[3];
3103         float color[3];
3104         float dir[3];
3105         float dist;
3106         float dist2;
3107         float intensity;
3108         float sample[5*3];
3109         float lightorigin[3];
3110         float lightradius;
3111         float lightradius2;
3112         float lightiradius;
3113         float lightcolor[3];
3114         trace_t trace;
3115         for (i = 0;i < 5*3;i++)
3116                 sample[i] = 0.0f;
3117         for (index = 0;;index++)
3118         {
3119                 result = R_Shadow_GetRTLightInfo(index, lightorigin, &lightradius, lightcolor);
3120                 if (result < 0)
3121                         break;
3122                 if (result == 0)
3123                         continue;
3124                 lightradius2 = lightradius * lightradius;
3125                 VectorSubtract(lightorigin, pos, relativepoint);
3126                 dist2 = VectorLength2(relativepoint);
3127                 if (dist2 >= lightradius2)
3128                         continue;
3129                 lightiradius = 1.0f / lightradius;
3130                 dist = sqrt(dist2) * lightiradius;
3131                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
3132                 if (intensity <= 0)
3133                         continue;
3134                 if (model && model->TraceLine)
3135                 {
3136                         model->TraceLine(model, NULL, NULL, &trace, pos, lightorigin, SUPERCONTENTS_VISBLOCKERMASK);
3137                         if (trace.fraction < 1)
3138                                 continue;
3139                 }
3140                 // scale down intensity to add to both ambient and diffuse
3141                 //intensity *= 0.5f;
3142                 VectorNormalize(relativepoint);
3143                 VectorScale(lightcolor, intensity, color);
3144                 VectorMA(sample    , 0.5f            , color, sample    );
3145                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
3146                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
3147                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
3148                 // calculate a weighted average light direction as well
3149                 intensity *= VectorLength(color);
3150                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
3151         }
3152         // calculate the direction we'll use to reduce the sample to a directional light source
3153         VectorCopy(sample + 12, dir);
3154         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3155         VectorNormalize(dir);
3156         // extract the diffuse color along the chosen direction and scale it
3157         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]);
3158         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]);
3159         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]);
3160         // subtract some of diffuse from ambient
3161         VectorMA(sample, -0.333f, diffuse, ambient);
3162         // store the normalized lightdir
3163         VectorCopy(dir, lightdir);
3164 }
3165
3166 static void Mod_GenerateLightmaps_CreateLights_ComputeSVBSP_InsertSurfaces(const dp_model_t *model, svbsp_t *svbsp, const float *mins, const float *maxs)
3167 {
3168         int surfaceindex;
3169         int triangleindex;
3170         const msurface_t *surface;
3171         const float *vertex3f = model->surfmesh.data_vertex3f;
3172         const int *element3i = model->surfmesh.data_element3i;
3173         const int *e;
3174         float v2[3][3];
3175         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->nummodelsurfaces;surfaceindex++, surface++)
3176         {
3177                 if (!BoxesOverlap(surface->mins, surface->maxs, mins, maxs))
3178                         continue;
3179                 if (surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW)
3180                         continue;
3181                 for (triangleindex = 0, e = element3i + 3*surface->num_firsttriangle;triangleindex < surface->num_triangles;triangleindex++, e += 3)
3182                 {
3183                         VectorCopy(vertex3f + 3*e[0], v2[0]);
3184                         VectorCopy(vertex3f + 3*e[1], v2[1]);
3185                         VectorCopy(vertex3f + 3*e[2], v2[2]);
3186                         SVBSP_AddPolygon(svbsp, 3, v2[0], true, NULL, NULL, 0);
3187                 }
3188         }
3189 }
3190
3191 static void Mod_GenerateLightmaps_CreateLights_ComputeSVBSP(dp_model_t *model, lightmaplight_t *lightinfo)
3192 {
3193         int maxnodes = 1<<14;
3194         svbsp_node_t *nodes;
3195         float origin[3];
3196         float mins[3];
3197         float maxs[3];
3198         svbsp_t svbsp;
3199         VectorSet(mins, lightinfo->origin[0] - lightinfo->radius, lightinfo->origin[1] - lightinfo->radius, lightinfo->origin[2] - lightinfo->radius);
3200         VectorSet(maxs, lightinfo->origin[0] + lightinfo->radius, lightinfo->origin[1] + lightinfo->radius, lightinfo->origin[2] + lightinfo->radius);
3201         VectorCopy(lightinfo->origin, origin);
3202         nodes = Mem_Alloc(tempmempool, maxnodes * sizeof(*nodes));
3203         for (;;)
3204         {
3205                 SVBSP_Init(&svbsp, origin, maxnodes, nodes);
3206                 Mod_GenerateLightmaps_CreateLights_ComputeSVBSP_InsertSurfaces(model, &svbsp, mins, maxs);
3207                 if (svbsp.ranoutofnodes)
3208                 {
3209                         maxnodes *= 2;
3210                         if (maxnodes >= 1<<22)
3211                         {
3212                                 Mem_Free(nodes);
3213                                 return;
3214                         }
3215                         Mem_Free(nodes);
3216                         nodes = Mem_Alloc(tempmempool, maxnodes * sizeof(*nodes));
3217                 }
3218                 else
3219                         break;
3220         }
3221         if (svbsp.numnodes > 0)
3222         {
3223                 svbsp.nodes = Mem_Alloc(tempmempool, svbsp.numnodes * sizeof(*nodes));
3224                 memcpy(svbsp.nodes, nodes, svbsp.numnodes * sizeof(*nodes));
3225                 lightinfo->svbsp = svbsp;
3226         }
3227         Mem_Free(nodes);
3228 }
3229
3230 static void Mod_GenerateLightmaps_CreateLights(dp_model_t *model)
3231 {
3232         int index;
3233         int result;
3234         lightmaplight_t *lightinfo;
3235         float origin[3];
3236         float radius;
3237         float color[3];
3238         mod_generatelightmaps_numlights = 0;
3239         for (index = 0;;index++)
3240         {
3241                 result = R_Shadow_GetRTLightInfo(index, origin, &radius, color);
3242                 if (result < 0)
3243                         break;
3244                 if (result > 0)
3245                         mod_generatelightmaps_numlights++;
3246         }
3247         if (mod_generatelightmaps_numlights > 0)
3248         {
3249                 mod_generatelightmaps_lightinfo = Mem_Alloc(tempmempool, mod_generatelightmaps_numlights * sizeof(*mod_generatelightmaps_lightinfo));
3250                 lightinfo = mod_generatelightmaps_lightinfo;
3251                 for (index = 0;;index++)
3252                 {
3253                         result = R_Shadow_GetRTLightInfo(index, lightinfo->origin, &lightinfo->radius, lightinfo->color);
3254                         if (result < 0)
3255                                 break;
3256                         if (result > 0)
3257                                 lightinfo++;
3258                 }
3259         }
3260         for (index = 0, lightinfo = mod_generatelightmaps_lightinfo;index < mod_generatelightmaps_numlights;index++, lightinfo++)
3261         {
3262                 lightinfo->iradius = 1.0f / lightinfo->radius;
3263                 lightinfo->radius2 = lightinfo->radius * lightinfo->radius;
3264                 // TODO: compute svbsp
3265                 Mod_GenerateLightmaps_CreateLights_ComputeSVBSP(model, lightinfo);
3266         }
3267 }
3268
3269 static void Mod_GenerateLightmaps_DestroyLights(dp_model_t *model)
3270 {
3271         int i;
3272         if (mod_generatelightmaps_lightinfo)
3273         {
3274                 for (i = 0;i < mod_generatelightmaps_numlights;i++)
3275                         if (mod_generatelightmaps_lightinfo[i].svbsp.nodes)
3276                                 Mem_Free(mod_generatelightmaps_lightinfo[i].svbsp.nodes);
3277                 Mem_Free(mod_generatelightmaps_lightinfo);
3278         }
3279         mod_generatelightmaps_lightinfo = NULL;
3280         mod_generatelightmaps_numlights = 0;
3281 }
3282
3283 static qboolean Mod_GenerateLightmaps_SamplePoint_SVBSP(const svbsp_t *svbsp, const float *pos)
3284 {
3285         const svbsp_node_t *node;
3286         const svbsp_node_t *nodes = svbsp->nodes;
3287         int num = 0;
3288         while (num >= 0)
3289         {
3290                 node = nodes + num;
3291                 num = node->children[DotProduct(node->plane, pos) < node->plane[3]];
3292         }
3293         return num == -1; // true if empty, false if solid (shadowed)
3294 }
3295
3296 static void Mod_GenerateLightmaps_SamplePoint(const float *pos, const float *normal, float *sample, int numoffsets, const float *offsets)
3297 {
3298         int i;
3299         float relativepoint[3];
3300         float color[3];
3301         float offsetpos[3];
3302         float dist;
3303         float dist2;
3304         float intensity;
3305         int offsetindex;
3306         int hits;
3307         int tests;
3308         const lightmaplight_t *lightinfo;
3309         trace_t trace;
3310         for (i = 0;i < 5*3;i++)
3311                 sample[i] = 0.0f;
3312         for (i = 0, lightinfo = mod_generatelightmaps_lightinfo;i < mod_generatelightmaps_numlights;i++, lightinfo++)
3313         {
3314                 //R_SampleRTLights(pos, sample, numoffsets, offsets);
3315                 VectorSubtract(lightinfo->origin, pos, relativepoint);
3316                 // don't accept light from behind a surface, it causes bad shading
3317                 if (normal && DotProduct(relativepoint, normal) <= 0)
3318                         continue;
3319                 dist2 = VectorLength2(relativepoint);
3320                 if (dist2 >= lightinfo->radius2)
3321                         continue;
3322                 dist = sqrt(dist2) * lightinfo->iradius;
3323                 intensity = dist < 1 ? ((1.0f - dist) * r_shadow_lightattenuationlinearscale.value / (r_shadow_lightattenuationdividebias.value + dist*dist)) : 0;
3324                 if (intensity <= 0)
3325                         continue;
3326                 if (cl.worldmodel && cl.worldmodel->TraceLine && numoffsets > 0)
3327                 {
3328                         hits = 0;
3329                         tests = 1;
3330                         if (Mod_GenerateLightmaps_SamplePoint_SVBSP(&lightinfo->svbsp, pos))
3331                                 hits++;
3332                         for (offsetindex = 1;offsetindex < numoffsets;offsetindex++)
3333                         {
3334                                 VectorAdd(pos, offsets + 3*offsetindex, offsetpos);
3335                                 if (!normal)
3336                                 {
3337                                         // for light grid we'd better check visibility of the offset point
3338                                         cl.worldmodel->TraceLine(cl.worldmodel, NULL, NULL, &trace, pos, offsetpos, SUPERCONTENTS_VISBLOCKERMASK);
3339                                         if (trace.fraction < 1)
3340                                                 VectorLerp(pos, trace.fraction, offsetpos, offsetpos);
3341                                 }
3342                                 tests++;
3343                                 if (Mod_GenerateLightmaps_SamplePoint_SVBSP(&lightinfo->svbsp, offsetpos))
3344                                         hits++;
3345                         }
3346                         if (!hits)
3347                                 continue;
3348                         // scale intensity according to how many rays succeeded
3349                         // we know one test is valid, half of the rest will fail...
3350                         //if (normal && tests > 1)
3351                         //      intensity *= (tests - 1.0f) / tests;
3352                         intensity *= (float)hits / tests;
3353                 }
3354                 // scale down intensity to add to both ambient and diffuse
3355                 //intensity *= 0.5f;
3356                 VectorNormalize(relativepoint);
3357                 VectorScale(lightinfo->color, intensity, color);
3358                 VectorMA(sample    , 0.5f            , color, sample    );
3359                 VectorMA(sample + 3, relativepoint[0], color, sample + 3);
3360                 VectorMA(sample + 6, relativepoint[1], color, sample + 6);
3361                 VectorMA(sample + 9, relativepoint[2], color, sample + 9);
3362                 // calculate a weighted average light direction as well
3363                 intensity *= VectorLength(color);
3364                 VectorMA(sample + 12, intensity, relativepoint, sample + 12);
3365         }
3366 }
3367
3368 static void Mod_GenerateLightmaps_LightmapSample(const float *pos, const float *normal, unsigned char *lm_bgr, unsigned char *lm_dir)
3369 {
3370         float sample[5*3];
3371         float color[3];
3372         float dir[3];
3373         float f;
3374         Mod_GenerateLightmaps_SamplePoint(pos, normal, sample, mod_generatelightmaps_numoffsets[0], mod_generatelightmaps_offsets[0][0]);
3375         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3376         VectorCopy(sample + 12, dir);
3377         VectorNormalize(dir);
3378         //VectorAdd(dir, normal, dir);
3379         //VectorNormalize(dir);
3380         f = DotProduct(dir, normal);
3381         f = max(0, f) * 255.0f;
3382         VectorScale(sample, f, color);
3383         //VectorCopy(normal, dir);
3384         VectorSet(dir, (dir[0]+1.0f)*127.5f, (dir[1]+1.0f)*127.5f, (dir[2]+1.0f)*127.5f);
3385         lm_bgr[0] = (unsigned char)bound(0.0f, color[2], 255.0f);
3386         lm_bgr[1] = (unsigned char)bound(0.0f, color[1], 255.0f);
3387         lm_bgr[2] = (unsigned char)bound(0.0f, color[0], 255.0f);
3388         lm_bgr[3] = 255;
3389         lm_dir[0] = (unsigned char)dir[2];
3390         lm_dir[1] = (unsigned char)dir[1];
3391         lm_dir[2] = (unsigned char)dir[0];
3392         lm_dir[3] = 255;
3393 }
3394
3395 static void Mod_GenerateLightmaps_VertexSample(const float *pos, const float *normal, float *vertex_color)
3396 {
3397         float sample[5*3];
3398         Mod_GenerateLightmaps_SamplePoint(pos, normal, sample, mod_generatelightmaps_numoffsets[1], mod_generatelightmaps_offsets[1][0]);
3399         VectorCopy(sample, vertex_color);
3400 }
3401
3402 static void Mod_GenerateLightmaps_GridSample(const float *pos, q3dlightgrid_t *s)
3403 {
3404         float sample[5*3];
3405         float ambient[3];
3406         float diffuse[3];
3407         float dir[3];
3408         Mod_GenerateLightmaps_SamplePoint(pos, NULL, sample, mod_generatelightmaps_numoffsets[2], mod_generatelightmaps_offsets[2][0]);
3409         // calculate the direction we'll use to reduce the sample to a directional light source
3410         VectorCopy(sample + 12, dir);
3411         //VectorSet(dir, sample[3] + sample[4] + sample[5], sample[6] + sample[7] + sample[8], sample[9] + sample[10] + sample[11]);
3412         VectorNormalize(dir);
3413         // extract the diffuse color along the chosen direction and scale it
3414         diffuse[0] = (dir[0]*sample[3] + dir[1]*sample[6] + dir[2]*sample[ 9] + sample[ 0]) * 127.5f;
3415         diffuse[1] = (dir[0]*sample[4] + dir[1]*sample[7] + dir[2]*sample[10] + sample[ 1]) * 127.5f;
3416         diffuse[2] = (dir[0]*sample[5] + dir[1]*sample[8] + dir[2]*sample[11] + sample[ 2]) * 127.5f;
3417         // scale the ambient from 0-2 to 0-255 and subtract some of diffuse
3418         VectorScale(sample, 127.5f, ambient);
3419         VectorMA(ambient, -0.333f, diffuse, ambient);
3420         // encode to the grid format
3421         s->ambientrgb[0] = (unsigned char)bound(0.0f, ambient[0], 255.0f);
3422         s->ambientrgb[1] = (unsigned char)bound(0.0f, ambient[1], 255.0f);
3423         s->ambientrgb[2] = (unsigned char)bound(0.0f, ambient[2], 255.0f);
3424         s->diffusergb[0] = (unsigned char)bound(0.0f, diffuse[0], 255.0f);
3425         s->diffusergb[1] = (unsigned char)bound(0.0f, diffuse[1], 255.0f);
3426         s->diffusergb[2] = (unsigned char)bound(0.0f, diffuse[2], 255.0f);
3427         if (dir[2] >= 0.99f) {s->diffusepitch = 0;s->diffuseyaw = 0;}
3428         else if (dir[2] <= -0.99f) {s->diffusepitch = 128;s->diffuseyaw = 0;}
3429         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));}
3430 }
3431
3432 static void Mod_GenerateLightmaps_InitSampleOffsets(dp_model_t *model)
3433 {
3434         float radius[3];
3435         float temp[3];
3436         int i, j;
3437         memset(mod_generatelightmaps_offsets, 0, sizeof(mod_generatelightmaps_offsets));
3438         mod_generatelightmaps_numoffsets[0] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_lightmapsamples.integer);
3439         mod_generatelightmaps_numoffsets[1] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_vertexsamples.integer);
3440         mod_generatelightmaps_numoffsets[2] = min(MAX_LIGHTMAPSAMPLES, mod_generatelightmaps_gridsamples.integer);
3441         radius[0] = mod_generatelightmaps_lightmapradius.value;
3442         radius[1] = mod_generatelightmaps_vertexradius.value;
3443         radius[2] = mod_generatelightmaps_gridradius.value;
3444         for (i = 0;i < 3;i++)
3445         {
3446                 for (j = 1;j < mod_generatelightmaps_numoffsets[i];j++)
3447                 {
3448                         VectorRandom(temp);
3449                         VectorScale(temp, radius[i], mod_generatelightmaps_offsets[i][j]);
3450                 }
3451         }
3452 }
3453
3454 static void Mod_GenerateLightmaps_DestroyLightmaps(dp_model_t *model)
3455 {
3456         msurface_t *surface;
3457         int surfaceindex;
3458         int i;
3459         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3460         {
3461                 surface = model->data_surfaces + surfaceindex;
3462                 surface->lightmaptexture = NULL;
3463                 surface->deluxemaptexture = NULL;
3464         }
3465         if (model->brushq3.data_lightmaps)
3466         {
3467                 for (i = 0;i < model->brushq3.num_mergedlightmaps;i++)
3468                         if (model->brushq3.data_lightmaps[i])
3469                                 R_FreeTexture(model->brushq3.data_lightmaps[i]);
3470                 Mem_Free(model->brushq3.data_lightmaps);
3471                 model->brushq3.data_lightmaps = NULL;
3472         }
3473         if (model->brushq3.data_deluxemaps)
3474         {
3475                 for (i = 0;i < model->brushq3.num_mergedlightmaps;i++)
3476                         if (model->brushq3.data_deluxemaps[i])
3477                                 R_FreeTexture(model->brushq3.data_deluxemaps[i]);
3478                 Mem_Free(model->brushq3.data_deluxemaps);
3479                 model->brushq3.data_deluxemaps = NULL;
3480         }
3481 }
3482
3483 static void Mod_GenerateLightmaps_UnweldTriangles(dp_model_t *model)
3484 {
3485         msurface_t *surface;
3486         int surfaceindex;
3487         int vertexindex;
3488         int outvertexindex;
3489         int i;
3490         const int *e;
3491         surfmesh_t oldsurfmesh;
3492         size_t size;
3493         unsigned char *data;
3494         oldsurfmesh = model->surfmesh;
3495         model->surfmesh.num_triangles = oldsurfmesh.num_triangles;
3496         model->surfmesh.num_vertices = oldsurfmesh.num_triangles * 3;
3497         size = 0;
3498         size += model->surfmesh.num_vertices * sizeof(float[3]);
3499         size += model->surfmesh.num_vertices * sizeof(float[3]);
3500         size += model->surfmesh.num_vertices * sizeof(float[3]);
3501         size += model->surfmesh.num_vertices * sizeof(float[3]);
3502         size += model->surfmesh.num_vertices * sizeof(float[2]);
3503         size += model->surfmesh.num_vertices * sizeof(float[2]);
3504         size += model->surfmesh.num_vertices * sizeof(float[4]);
3505         data = (unsigned char *)Mem_Alloc(model->mempool, size);
3506         model->surfmesh.data_vertex3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3507         model->surfmesh.data_normal3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3508         model->surfmesh.data_svector3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3509         model->surfmesh.data_tvector3f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[3]);
3510         model->surfmesh.data_texcoordtexture2f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[2]);
3511         model->surfmesh.data_texcoordlightmap2f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[2]);
3512         model->surfmesh.data_lightmapcolor4f = (float *)data;data += model->surfmesh.num_vertices * sizeof(float[4]);
3513         if (model->surfmesh.num_vertices > 65536)
3514                 model->surfmesh.data_element3s = NULL;
3515
3516         if (model->surfmesh.vbo)
3517                 R_Mesh_DestroyBufferObject(model->surfmesh.vbo);
3518         model->surfmesh.vbo = 0;
3519         if (model->surfmesh.ebo3i)
3520                 R_Mesh_DestroyBufferObject(model->surfmesh.ebo3i);
3521         model->surfmesh.ebo3i = 0;
3522         if (model->surfmesh.ebo3s)
3523                 R_Mesh_DestroyBufferObject(model->surfmesh.ebo3s);
3524         model->surfmesh.ebo3s = 0;
3525
3526         // convert all triangles to unique vertex data
3527         outvertexindex = 0;
3528         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3529         {
3530                 surface = model->data_surfaces + surfaceindex;
3531                 surface->num_firstvertex = outvertexindex;
3532                 surface->num_vertices = surface->num_triangles*3;
3533                 e = oldsurfmesh.data_element3i + surface->num_firsttriangle*3;
3534                 for (i = 0;i < surface->num_triangles*3;i++)
3535                 {
3536                         vertexindex = e[i];
3537                         model->surfmesh.data_vertex3f[outvertexindex*3+0] = oldsurfmesh.data_vertex3f[vertexindex*3+0];
3538                         model->surfmesh.data_vertex3f[outvertexindex*3+1] = oldsurfmesh.data_vertex3f[vertexindex*3+1];
3539                         model->surfmesh.data_vertex3f[outvertexindex*3+2] = oldsurfmesh.data_vertex3f[vertexindex*3+2];
3540                         model->surfmesh.data_normal3f[outvertexindex*3+0] = oldsurfmesh.data_normal3f[vertexindex*3+0];
3541                         model->surfmesh.data_normal3f[outvertexindex*3+1] = oldsurfmesh.data_normal3f[vertexindex*3+1];
3542                         model->surfmesh.data_normal3f[outvertexindex*3+2] = oldsurfmesh.data_normal3f[vertexindex*3+2];
3543                         model->surfmesh.data_svector3f[outvertexindex*3+0] = oldsurfmesh.data_svector3f[vertexindex*3+0];
3544                         model->surfmesh.data_svector3f[outvertexindex*3+1] = oldsurfmesh.data_svector3f[vertexindex*3+1];
3545                         model->surfmesh.data_svector3f[outvertexindex*3+2] = oldsurfmesh.data_svector3f[vertexindex*3+2];
3546                         model->surfmesh.data_tvector3f[outvertexindex*3+0] = oldsurfmesh.data_tvector3f[vertexindex*3+0];
3547                         model->surfmesh.data_tvector3f[outvertexindex*3+1] = oldsurfmesh.data_tvector3f[vertexindex*3+1];
3548                         model->surfmesh.data_tvector3f[outvertexindex*3+2] = oldsurfmesh.data_tvector3f[vertexindex*3+2];
3549                         model->surfmesh.data_texcoordtexture2f[outvertexindex*2+0] = oldsurfmesh.data_texcoordtexture2f[vertexindex*2+0];
3550                         model->surfmesh.data_texcoordtexture2f[outvertexindex*2+1] = oldsurfmesh.data_texcoordtexture2f[vertexindex*2+1];
3551                         if (oldsurfmesh.data_texcoordlightmap2f)
3552                         {
3553                                 model->surfmesh.data_texcoordlightmap2f[outvertexindex*2+0] = oldsurfmesh.data_texcoordlightmap2f[vertexindex*2+0];
3554                                 model->surfmesh.data_texcoordlightmap2f[outvertexindex*2+1] = oldsurfmesh.data_texcoordlightmap2f[vertexindex*2+1];
3555                         }
3556                         if (oldsurfmesh.data_lightmapcolor4f)
3557                         {
3558                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+0] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+0];
3559                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+1] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+1];
3560                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+2] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+2];
3561                                 model->surfmesh.data_lightmapcolor4f[outvertexindex*4+3] = oldsurfmesh.data_lightmapcolor4f[vertexindex*4+3];
3562                         }
3563                         else
3564                                 Vector4Set(model->surfmesh.data_lightmapcolor4f + 4*outvertexindex, 1, 1, 1, 1);
3565                         model->surfmesh.data_element3i[surface->num_firsttriangle*3+i] = outvertexindex;
3566                         outvertexindex++;
3567                 }
3568         }
3569         if (model->surfmesh.data_element3s)
3570                 for (i = 0;i < model->surfmesh.num_triangles*3;i++)
3571                         model->surfmesh.data_element3s[i] = model->surfmesh.data_element3i[i];
3572
3573         // find and update all submodels to use this new surfmesh data
3574         for (i = 0;i < model->brush.numsubmodels;i++)
3575                 model->brush.submodels[i]->surfmesh = model->surfmesh;
3576 }
3577
3578 static void Mod_GenerateLightmaps_CreateTriangleInformation(dp_model_t *model)
3579 {
3580         msurface_t *surface;
3581         int surfaceindex;
3582         int i;
3583         int axis;
3584         float normal[3];
3585         const int *e;
3586         lightmaptriangle_t *triangle;
3587         // generate lightmap triangle structs
3588         mod_generatelightmaps_lightmaptriangles = Mem_Alloc(model->mempool, model->surfmesh.num_triangles * sizeof(lightmaptriangle_t));
3589         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3590         {
3591                 surface = model->data_surfaces + surfaceindex;
3592                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3593                 for (i = 0;i < surface->num_triangles;i++)
3594                 {
3595                         triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3596                         triangle->triangleindex = surface->num_firsttriangle+i;
3597                         triangle->surfaceindex = surfaceindex;
3598                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+0], triangle->vertex[0]);
3599                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+1], triangle->vertex[1]);
3600                         VectorCopy(model->surfmesh.data_vertex3f + 3*e[i*3+2], triangle->vertex[2]);
3601                         // calculate bounds of triangle
3602                         triangle->mins[0] = min(triangle->vertex[0][0], min(triangle->vertex[1][0], triangle->vertex[2][0]));
3603                         triangle->mins[1] = min(triangle->vertex[0][1], min(triangle->vertex[1][1], triangle->vertex[2][1]));
3604                         triangle->mins[2] = min(triangle->vertex[0][2], min(triangle->vertex[1][2], triangle->vertex[2][2]));
3605                         triangle->maxs[0] = max(triangle->vertex[0][0], max(triangle->vertex[1][0], triangle->vertex[2][0]));
3606                         triangle->maxs[1] = max(triangle->vertex[0][1], max(triangle->vertex[1][1], triangle->vertex[2][1]));
3607                         triangle->maxs[2] = max(triangle->vertex[0][2], max(triangle->vertex[1][2], triangle->vertex[2][2]));
3608                         // pick an axial projection based on the triangle normal
3609                         TriangleNormal(triangle->vertex[0], triangle->vertex[1], triangle->vertex[2], normal);
3610                         axis = 0;
3611                         if (fabs(normal[1]) > fabs(normal[axis]))
3612                                 axis = 1;
3613                         if (fabs(normal[2]) > fabs(normal[axis]))
3614                                 axis = 2;
3615                         triangle->axis = axis;
3616                 }
3617         }
3618 }
3619
3620 static void Mod_GenerateLightmaps_DestroyTriangleInformation(dp_model_t *model)
3621 {
3622         if (mod_generatelightmaps_lightmaptriangles)
3623                 Mem_Free(mod_generatelightmaps_lightmaptriangles);
3624         mod_generatelightmaps_lightmaptriangles = NULL;
3625 }
3626
3627 float lmaxis[3][3] = {{1, 0, 0}, {0, 1, 0}, {0, 0, 1}};
3628
3629 static void Mod_GenerateLightmaps_CreateLightmaps(dp_model_t *model)
3630 {
3631         msurface_t *surface;
3632         int surfaceindex;
3633         int lightmapindex;
3634         int lightmapnumber;
3635         int i;
3636         int j;
3637         int k;
3638         int x;
3639         int y;
3640         int axis;
3641         int axis1;
3642         int axis2;
3643         int retry;
3644         int pixeloffset;
3645         float trianglenormal[3];
3646         float samplecenter[3];
3647         float samplenormal[3];
3648         float temp[3];
3649         float lmiscale[2];
3650         float slopex;
3651         float slopey;
3652         float slopebase;
3653         float lmscalepixels;
3654         float lmmins;
3655         float lmmaxs;
3656         float lm_basescalepixels;
3657         int lm_borderpixels;
3658         int lm_texturesize;
3659         //int lm_maxpixels;
3660         const int *e;
3661         lightmaptriangle_t *triangle;
3662         unsigned char *lightmappixels;
3663         unsigned char *deluxemappixels;
3664         mod_alloclightmap_state_t lmstate;
3665
3666         // generate lightmap projection information for all triangles
3667         if (model->texturepool == NULL)
3668                 model->texturepool = R_AllocTexturePool();
3669         lm_basescalepixels = 1.0f / max(0.0001f, mod_generatelightmaps_unitspersample.value);
3670         lm_borderpixels = mod_generatelightmaps_borderpixels.integer;
3671         lm_texturesize = bound(lm_borderpixels*2+1, 64, (int)vid.maxtexturesize_2d);
3672         //lm_maxpixels = lm_texturesize-(lm_borderpixels*2+1);
3673         Mod_AllocLightmap_Init(&lmstate, lm_texturesize, lm_texturesize);
3674         lightmapnumber = 0;
3675         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3676         {
3677                 surface = model->data_surfaces + surfaceindex;
3678                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3679                 lmscalepixels = lm_basescalepixels;
3680                 for (retry = 0;retry < 30;retry++)
3681                 {
3682                         // after a couple failed attempts, degrade quality to make it fit
3683                         if (retry > 1)
3684                                 lmscalepixels *= 0.5f;
3685                         for (i = 0;i < surface->num_triangles;i++)
3686                         {
3687                                 triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3688                                 triangle->lightmapindex = lightmapnumber;
3689                                 // calculate lightmap bounds in 3D pixel coordinates, limit size,
3690                                 // pick two planar axes for projection
3691                                 // lightmap coordinates here are in pixels
3692                                 // lightmap projections are snapped to pixel grid explicitly, such
3693                                 // that two neighboring triangles sharing an edge and projection
3694                                 // axis will have identical sampl espacing along their shared edge
3695                                 k = 0;
3696                                 for (j = 0;j < 3;j++)
3697                                 {
3698                                         if (j == triangle->axis)
3699                                                 continue;
3700                                         lmmins = floor(triangle->mins[j]*lmscalepixels)-lm_borderpixels;
3701                                         lmmaxs = floor(triangle->maxs[j]*lmscalepixels)+lm_borderpixels;
3702                                         triangle->lmsize[k] = (int)(lmmaxs-lmmins);
3703                                         triangle->lmbase[k] = lmmins/lmscalepixels;
3704                                         triangle->lmscale[k] = lmscalepixels;
3705                                         k++;
3706                                 }
3707                                 if (!Mod_AllocLightmap_Block(&lmstate, triangle->lmsize[0], triangle->lmsize[1], &triangle->lmoffset[0], &triangle->lmoffset[1]))
3708                                         break;
3709                         }
3710                         // if all fit in this texture, we're done with this surface
3711                         if (i == surface->num_triangles)
3712                                 break;
3713                         // if we haven't maxed out the lightmap size yet, we retry the
3714                         // entire surface batch...
3715                         if (lm_texturesize * 2 <= min(mod_generatelightmaps_texturesize.integer, (int)vid.maxtexturesize_2d))
3716                         {
3717                                 lm_texturesize *= 2;
3718                                 surfaceindex = -1;
3719                                 lightmapnumber = 0;
3720                                 Mod_AllocLightmap_Free(&lmstate);
3721                                 Mod_AllocLightmap_Init(&lmstate, lm_texturesize, lm_texturesize);
3722                                 break;
3723                         }
3724                         // if we have maxed out the lightmap size, and this triangle does
3725                         // not fit in the same texture as the rest of the surface, we have
3726                         // to retry the entire surface in a new texture (can only use one)
3727                         // with multiple retries, the lightmap quality degrades until it
3728                         // fits (or gives up)
3729                         if (surfaceindex > 0)
3730                                 lightmapnumber++;
3731                         Mod_AllocLightmap_Reset(&lmstate);
3732                 }
3733         }
3734         lightmapnumber++;
3735         Mod_AllocLightmap_Free(&lmstate);
3736
3737         // now put triangles together into lightmap textures, and do not allow
3738         // triangles of a surface to go into different textures (as that would
3739         // require rewriting the surface list)
3740         model->brushq3.deluxemapping_modelspace = true;
3741         model->brushq3.deluxemapping = true;
3742         model->brushq3.num_mergedlightmaps = lightmapnumber;
3743         model->brushq3.data_lightmaps = Mem_Alloc(model->mempool, model->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
3744         model->brushq3.data_deluxemaps = Mem_Alloc(model->mempool, model->brushq3.num_mergedlightmaps * sizeof(rtexture_t *));
3745         lightmappixels = Mem_Alloc(tempmempool, model->brushq3.num_mergedlightmaps * lm_texturesize * lm_texturesize * 4);
3746         deluxemappixels = Mem_Alloc(tempmempool, model->brushq3.num_mergedlightmaps * lm_texturesize * lm_texturesize * 4);
3747         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3748         {
3749                 surface = model->data_surfaces + surfaceindex;
3750                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3751                 for (i = 0;i < surface->num_triangles;i++)
3752                 {
3753                         triangle = &mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle+i];
3754                         TriangleNormal(triangle->vertex[0], triangle->vertex[1], triangle->vertex[2], trianglenormal);
3755                         VectorNormalize(trianglenormal);
3756                         VectorCopy(trianglenormal, samplenormal); // FIXME: this is supposed to be interpolated per pixel from vertices
3757                         axis = triangle->axis;
3758                         axis1 = axis == 0 ? 1 : 0;
3759                         axis2 = axis == 2 ? 1 : 2;
3760                         lmiscale[0] = 1.0f / triangle->lmscale[0];
3761                         lmiscale[1] = 1.0f / triangle->lmscale[1];
3762                         if (trianglenormal[axis] < 0)
3763                                 VectorNegate(trianglenormal, trianglenormal);
3764                         CrossProduct(lmaxis[axis2], trianglenormal, temp);slopex = temp[axis] / temp[axis1];
3765                         CrossProduct(lmaxis[axis1], trianglenormal, temp);slopey = temp[axis] / temp[axis2];
3766                         slopebase = triangle->vertex[0][axis] - triangle->vertex[0][axis1]*slopex - triangle->vertex[0][axis2]*slopey;
3767                         for (j = 0;j < 3;j++)
3768                         {
3769                                 float *t2f = model->surfmesh.data_texcoordlightmap2f + e[i*3+j]*2;
3770                                 t2f[0] = ((triangle->vertex[j][axis1] - triangle->lmbase[0]) * triangle->lmscale[0] + triangle->lmoffset[0]) / lm_texturesize;
3771                                 t2f[1] = ((triangle->vertex[j][axis2] - triangle->lmbase[1]) * triangle->lmscale[1] + triangle->lmoffset[1]) / lm_texturesize;
3772 #if 0
3773                                 samplecenter[axis1] = (t2f[0]*lm_texturesize-triangle->lmoffset[0])*lmiscale[0] + triangle->lmbase[0];
3774                                 samplecenter[axis2] = (t2f[1]*lm_texturesize-triangle->lmoffset[1])*lmiscale[1] + triangle->lmbase[1];
3775                                 samplecenter[axis] = samplecenter[axis1]*slopex + samplecenter[axis2]*slopey + slopebase;
3776                                 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]);
3777 #endif
3778                         }
3779
3780 #if 0
3781                         switch (axis)
3782                         {
3783                         default:
3784                         case 0:
3785                                 forward[0] = 0;
3786                                 forward[1] = 1.0f / triangle->lmscale[0];
3787                                 forward[2] = 0;
3788                                 left[0] = 0;
3789                                 left[1] = 0;
3790                                 left[2] = 1.0f / triangle->lmscale[1];
3791                                 up[0] = 1.0f;
3792                                 up[1] = 0;
3793                                 up[2] = 0;
3794                                 origin[0] = 0;
3795                                 origin[1] = triangle->lmbase[0];
3796                                 origin[2] = triangle->lmbase[1];
3797                                 break;
3798                         case 1:
3799                                 forward[0] = 1.0f / triangle->lmscale[0];
3800                                 forward[1] = 0;
3801                                 forward[2] = 0;
3802                                 left[0] = 0;
3803                                 left[1] = 0;
3804                                 left[2] = 1.0f / triangle->lmscale[1];
3805                                 up[0] = 0;
3806                                 up[1] = 1.0f;
3807                                 up[2] = 0;
3808                                 origin[0] = triangle->lmbase[0];
3809                                 origin[1] = 0;
3810                                 origin[2] = triangle->lmbase[1];
3811                                 break;
3812                         case 2:
3813                                 forward[0] = 1.0f / triangle->lmscale[0];
3814                                 forward[1] = 0;
3815                                 forward[2] = 0;
3816                                 left[0] = 0;
3817                                 left[1] = 1.0f / triangle->lmscale[1];
3818                                 left[2] = 0;
3819                                 up[0] = 0;
3820                                 up[1] = 0;
3821                                 up[2] = 1.0f;
3822                                 origin[0] = triangle->lmbase[0];
3823                                 origin[1] = triangle->lmbase[1];
3824                                 origin[2] = 0;
3825                                 break;
3826                         }
3827                         Matrix4x4_FromVectors(&backmatrix, forward, left, up, origin);
3828 #endif
3829 #define LM_DIST_EPSILON (1.0f / 32.0f)
3830                         for (y = 0;y < triangle->lmsize[1];y++)
3831                         {
3832                                 pixeloffset = ((triangle->lightmapindex * lm_texturesize + y + triangle->lmoffset[1]) * lm_texturesize + triangle->lmoffset[0]) * 4;
3833                                 for (x = 0;x < triangle->lmsize[0];x++, pixeloffset += 4)
3834                                 {
3835                                         samplecenter[axis1] = (x+0.5f)*lmiscale[0] + triangle->lmbase[0];
3836                                         samplecenter[axis2] = (y+0.5f)*lmiscale[1] + triangle->lmbase[1];
3837                                         samplecenter[axis] = samplecenter[axis1]*slopex + samplecenter[axis2]*slopey + slopebase;
3838                                         VectorMA(samplecenter, 0.125f, samplenormal, samplecenter);
3839                                         Mod_GenerateLightmaps_LightmapSample(samplecenter, samplenormal, lightmappixels + pixeloffset, deluxemappixels + pixeloffset);
3840                                 }
3841                         }
3842                 }
3843         }
3844
3845         for (lightmapindex = 0;lightmapindex < model->brushq3.num_mergedlightmaps;lightmapindex++)
3846         {
3847                 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);
3848                 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);
3849         }
3850
3851         if (lightmappixels)
3852                 Mem_Free(lightmappixels);
3853         if (deluxemappixels)
3854                 Mem_Free(deluxemappixels);
3855
3856         for (surfaceindex = 0;surfaceindex < model->num_surfaces;surfaceindex++)
3857         {
3858                 surface = model->data_surfaces + surfaceindex;
3859                 e = model->surfmesh.data_element3i + surface->num_firsttriangle*3;
3860                 if (!surface->num_triangles)
3861                         continue;
3862                 lightmapindex = mod_generatelightmaps_lightmaptriangles[surface->num_firsttriangle].lightmapindex;
3863                 surface->lightmaptexture = model->brushq3.data_lightmaps[lightmapindex];
3864                 surface->deluxemaptexture = model->brushq3.data_deluxemaps[lightmapindex];
3865                 surface->lightmapinfo = NULL;
3866         }
3867
3868         model->brush.LightPoint = Mod_GenerateLightmaps_LightPoint;
3869         model->brushq1.lightdata = NULL;
3870         model->brushq1.lightmapupdateflags = NULL;
3871         model->brushq1.firstrender = false;
3872         model->brushq1.num_lightstyles = 0;
3873         model->brushq1.data_lightstyleinfo = NULL;
3874         for (i = 0;i < model->brush.numsubmodels;i++)
3875         {
3876                 model->brush.submodels[i]->brushq1.lightmapupdateflags = NULL;
3877                 model->brush.submodels[i]->brushq1.firstrender = false;
3878                 model->brush.submodels[i]->brushq1.num_lightstyles = 0;
3879                 model->brush.submodels[i]->brushq1.data_lightstyleinfo = NULL;
3880         }
3881 }
3882
3883 static void Mod_GenerateLightmaps_UpdateVertexColors(dp_model_t *model)
3884 {
3885         int i;
3886         for (i = 0;i < model->surfmesh.num_vertices;i++)
3887                 Mod_GenerateLightmaps_VertexSample(model->surfmesh.data_vertex3f + 3*i, model->surfmesh.data_normal3f + 3*i, model->surfmesh.data_lightmapcolor4f + 4*i);
3888 }
3889
3890 static void Mod_GenerateLightmaps_UpdateLightGrid(dp_model_t *model)
3891 {
3892         int x;
3893         int y;
3894         int z;
3895         int index = 0;
3896         float pos[3];
3897         for (z = 0;z < model->brushq3.num_lightgrid_isize[2];z++)
3898         {
3899                 pos[2] = (model->brushq3.num_lightgrid_imins[2] + z + 0.5f) * model->brushq3.num_lightgrid_cellsize[2];
3900                 for (y = 0;y < model->brushq3.num_lightgrid_isize[1];y++)
3901                 {
3902                         pos[1] = (model->brushq3.num_lightgrid_imins[1] + y + 0.5f) * model->brushq3.num_lightgrid_cellsize[1];
3903                         for (x = 0;x < model->brushq3.num_lightgrid_isize[0];x++, index++)
3904                         {
3905                                 pos[0] = (model->brushq3.num_lightgrid_imins[0] + x + 0.5f) * model->brushq3.num_lightgrid_cellsize[0];
3906                                 Mod_GenerateLightmaps_GridSample(pos, model->brushq3.data_lightgrid + index);
3907                         }
3908                 }
3909         }
3910 }
3911
3912 extern cvar_t mod_q3bsp_nolightmaps;
3913 static void Mod_GenerateLightmaps(dp_model_t *model)
3914 {
3915         //lightmaptriangle_t *lightmaptriangles = Mem_Alloc(model->mempool, model->surfmesh.num_triangles * sizeof(lightmaptriangle_t));
3916         dp_model_t *oldloadmodel = loadmodel;
3917         loadmodel = model;
3918
3919         Mod_GenerateLightmaps_InitSampleOffsets(model);
3920         Mod_GenerateLightmaps_DestroyLightmaps(model);
3921         Mod_GenerateLightmaps_UnweldTriangles(model);
3922         Mod_GenerateLightmaps_CreateTriangleInformation(model);
3923         Mod_GenerateLightmaps_CreateLights(model);
3924         if(!mod_q3bsp_nolightmaps.integer)
3925                 Mod_GenerateLightmaps_CreateLightmaps(model);
3926         Mod_GenerateLightmaps_UpdateVertexColors(model);
3927         Mod_GenerateLightmaps_UpdateLightGrid(model);
3928         Mod_GenerateLightmaps_DestroyLights(model);
3929         Mod_GenerateLightmaps_DestroyTriangleInformation(model);
3930
3931         loadmodel = oldloadmodel;
3932 }
3933
3934 static void Mod_GenerateLightmaps_f(void)
3935 {
3936         if (Cmd_Argc() != 1)
3937         {
3938                 Con_Printf("usage: mod_generatelightmaps\n");
3939                 return;
3940         }
3941         if (!cl.worldmodel)
3942         {
3943                 Con_Printf("no worldmodel loaded\n");
3944                 return;
3945         }
3946         Mod_GenerateLightmaps(cl.worldmodel);
3947 }