model_shared.c

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