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
  29 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"};
  30
  31 dp_model_t *loadmodel;
  32
  33 static mempool_t *mod_mempool;
  34 static memexpandablearray_t models;
  35
  36 static mempool_t* q3shaders_mem;
  37 typedef struct q3shader_hash_entry_s
  38 {
  39   q3shaderinfo_t shader;
  40   struct q3shader_hash_entry_s* chain;
  41 } q3shader_hash_entry_t;
  42 #define Q3SHADER_HASH_SIZE  1021
  43 typedef struct q3shader_data_s
  44 {
  45   memexpandablearray_t hash_entries;
  46   q3shader_hash_entry_t hash[Q3SHADER_HASH_SIZE];
  47   memexpandablearray_t char_ptrs;
  48 } q3shader_data_t;
  49 static q3shader_data_t* q3shader_data;
  50
  51 static void mod_start(void)
  52 {
  53         int i, count;
  54         int nummodels = Mem_ExpandableArray_IndexRange(&models);
  55         dp_model_t *mod;
  56
  57         SCR_PushLoadingScreen(false, "Loading models", 1.0);
  58         count = 0;
  59         for (i = 0;i < nummodels;i++)
  60                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
  61                         if (mod->used)
  62                                 ++count;
  63         for (i = 0;i < nummodels;i++)
  64                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
  65                         if (mod->used)
  66                         {
  67                                 SCR_PushLoadingScreen(true, mod->name, 1.0 / count);
  68                                 Mod_LoadModel(mod, true, false);
  69                                 SCR_PopLoadingScreen(false);
  70                         }
  71         SCR_PopLoadingScreen(false);
  72 }
  73
  74 static void mod_shutdown(void)
  75 {
  76         int i;
  77         int nummodels = Mem_ExpandableArray_IndexRange(&models);
  78         dp_model_t *mod;
  79
  80         for (i = 0;i < nummodels;i++)
  81                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && (mod->loaded || mod->mempool))
  82                         Mod_UnloadModel(mod);
  83
  84         Mod_FreeQ3Shaders();
  85 }
  86
  87 static void mod_newmap(void)
  88 {
  89         msurface_t *surface;
  90         int i, j, k, surfacenum, ssize, tsize;
  91         int nummodels = Mem_ExpandableArray_IndexRange(&models);
  92         dp_model_t *mod;
  93
  94         R_SkinFrame_PrepareForPurge();
  95         for (i = 0;i < nummodels;i++)
  96         {
  97                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool && mod->data_textures)
  98                 {
  99                         for (j = 0;j < mod->num_textures;j++)
 100                         {
 101                                 for (k = 0;k < mod->data_textures[j].numskinframes;k++)
 102                                         R_SkinFrame_MarkUsed(mod->data_textures[j].skinframes[k]);
 103                                 for (k = 0;k < mod->data_textures[j].backgroundnumskinframes;k++)
 104                                         R_SkinFrame_MarkUsed(mod->data_textures[j].backgroundskinframes[k]);
 105                         }
 106                 }
 107         }
 108         R_SkinFrame_Purge();
 109
 110         if (!cl_stainmaps_clearonload.integer)
 111                 return;
 112
 113         for (i = 0;i < nummodels;i++)
 114         {
 115                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->mempool && mod->data_surfaces)
 116                 {
 117                         for (surfacenum = 0, surface = mod->data_surfaces;surfacenum < mod->num_surfaces;surfacenum++, surface++)
 118                         {
 119                                 if (surface->lightmapinfo && surface->lightmapinfo->stainsamples)
 120                                 {
 121                                         ssize = (surface->lightmapinfo->extents[0] >> 4) + 1;
 122                                         tsize = (surface->lightmapinfo->extents[1] >> 4) + 1;
 123                                         memset(surface->lightmapinfo->stainsamples, 255, ssize * tsize * 3);
 124                                         mod->brushq1.lightmapupdateflags[surfacenum] = true;
 125                                 }
 126                         }
 127                 }
 128         }
 129 }
 130
 131 /*
 132 ===============
 133 Mod_Init
 134 ===============
 135 */
 136 static void Mod_Print(void);
 137 static void Mod_Precache (void);
 138 static void Mod_Decompile_f(void);
 139 static void Mod_BuildVBOs(void);
 140 void Mod_Init (void)
 141 {
 142         mod_mempool = Mem_AllocPool("modelinfo", 0, NULL);
 143         Mem_ExpandableArray_NewArray(&models, mod_mempool, sizeof(dp_model_t), 16);
 144
 145         Mod_BrushInit();
 146         Mod_AliasInit();
 147         Mod_SpriteInit();
 148
 149         Cvar_RegisterVariable(&r_mipskins);
 150         Cmd_AddCommand ("modellist", Mod_Print, "prints a list of loaded models");
 151         Cmd_AddCommand ("modelprecache", Mod_Precache, "load a model");
 152         Cmd_AddCommand ("modeldecompile", Mod_Decompile_f, "exports a model in several formats for editing purposes");
 153 }
 154
 155 void Mod_RenderInit(void)
 156 {
 157         R_RegisterModule("Models", mod_start, mod_shutdown, mod_newmap);
 158 }
 159
 160 void Mod_UnloadModel (dp_model_t *mod)
 161 {
 162         char name[MAX_QPATH];
 163         qboolean used;
 164         dp_model_t *parentmodel;
 165
 166         if (developer_loading.integer)
 167                 Con_Printf("unloading model %s\n", mod->name);
 168
 169         strlcpy(name, mod->name, sizeof(name));
 170         parentmodel = mod->brush.parentmodel;
 171         used = mod->used;
 172         if (mod->surfmesh.ebo3i)
 173                 R_Mesh_DestroyBufferObject(mod->surfmesh.ebo3i);
 174         if (mod->surfmesh.ebo3s)
 175                 R_Mesh_DestroyBufferObject(mod->surfmesh.ebo3s);
 176         if (mod->surfmesh.vbo)
 177                 R_Mesh_DestroyBufferObject(mod->surfmesh.vbo);
 178         // free textures/memory attached to the model
 179         R_FreeTexturePool(&mod->texturepool);
 180         Mem_FreePool(&mod->mempool);
 181         // clear the struct to make it available
 182         memset(mod, 0, sizeof(dp_model_t));
 183         // restore the fields we want to preserve
 184         strlcpy(mod->name, name, sizeof(mod->name));
 185         mod->brush.parentmodel = parentmodel;
 186         mod->used = used;
 187         mod->loaded = false;
 188 }
 189
 190 void R_Model_Null_Draw(entity_render_t *ent)
 191 {
 192         return;
 193 }
 194
 195
 196 typedef void (*mod_framegroupify_parsegroups_t) (unsigned int i, int start, int len, float fps, qboolean loop, void *pass);
 197
 198 int Mod_FrameGroupify_ParseGroups(const char *buf, mod_framegroupify_parsegroups_t cb, void *pass)
 199 {
 200         const char *bufptr;
 201         int start, len;
 202         float fps;
 203         unsigned int i;
 204         qboolean loop;
 205
 206         bufptr = buf;
 207         i = 0;
 208         for(;;)
 209         {
 210                 // an anim scene!
 211                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 212                         break;
 213                 if (!strcmp(com_token, "\n"))
 214                         continue; // empty line
 215                 start = atoi(com_token);
 216                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 217                         break;
 218                 if (!strcmp(com_token, "\n"))
 219                 {
 220                         Con_Printf("framegroups file: missing number of frames\n");
 221                         continue;
 222                 }
 223                 len = atoi(com_token);
 224                 if (!COM_ParseToken_Simple(&bufptr, true, false))
 225                         break;
 226                 // we default to looping as it's usually wanted, so to NOT loop you append a 0
 227                 if (strcmp(com_token, "\n"))
 228                 {
 229                         fps = atof(com_token);
 230                         if (!COM_ParseToken_Simple(&bufptr, true, false))
 231                                 break;
 232                         if (strcmp(com_token, "\n"))
 233                                 loop = atoi(com_token) != 0;
 234                         else
 235                                 loop = true;
 236                 }
 237                 else
 238                 {
 239                         fps = 20;
 240                         loop = true;
 241                 }
 242
 243                 if(cb)
 244                         cb(i, start, len, fps, loop, pass);
 245                 ++i;
 246         }
 247
 248         return i;
 249 }
 250
 251 void Mod_FrameGroupify_ParseGroups_Count (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 252 {
 253         unsigned int *cnt = (unsigned int *) pass;
 254         ++*cnt;
 255 }
 256
 257 void Mod_FrameGroupify_ParseGroups_Store (unsigned int i, int start, int len, float fps, qboolean loop, void *pass)
 258 {
 259         dp_model_t *mod = (dp_model_t *) pass;
 260         animscene_t *anim = &mod->animscenes[i];
 261         dpsnprintf(anim->name, sizeof(anim[i].name), "groupified_%d", i);
 262         anim->firstframe = bound(0, start, mod->num_poses - 1);
 263         anim->framecount = bound(1, len, mod->num_poses - anim->firstframe);
 264         anim->framerate = max(1, fps);
 265         anim->loop = !!loop;
 266         //Con_Printf("frame group %d is %d %d %f %d\n", i, start, len, fps, loop);
 267 }
 268
 269 void Mod_FrameGroupify(dp_model_t *mod, const char *buf)
 270 {
 271         unsigned int cnt;
 272
 273         // 0. count
 274         cnt = Mod_FrameGroupify_ParseGroups(buf, NULL, NULL);
 275         if(!cnt)
 276         {
 277                 Con_Printf("no scene found in framegroups file, aborting\n");
 278                 return;
 279         }
 280         mod->numframes = cnt;
 281
 282         // 1. reallocate
 283         // (we do not free the previous animscenes, but model unloading will free the pool owning them, so it's okay)
 284         mod->animscenes = (animscene_t *) Mem_Alloc(mod->mempool, sizeof(animscene_t) * mod->numframes);
 285
 286         // 2. parse
 287         Mod_FrameGroupify_ParseGroups(buf, Mod_FrameGroupify_ParseGroups_Store, mod);
 288 }
 289
 290 /*
 291 ==================
 292 Mod_LoadModel
 293
 294 Loads a model
 295 ==================
 296 */
 297 dp_model_t *Mod_LoadModel(dp_model_t *mod, qboolean crash, qboolean checkdisk)
 298 {
 299         int num;
 300         unsigned int crc;
 301         void *buf;
 302         fs_offset_t filesize;
 303
 304         mod->used = true;
 305
 306         if (mod->name[0] == '*') // submodel
 307                 return mod;
 308
 309         if (!strcmp(mod->name, "null"))
 310         {
 311                 if(mod->loaded)
 312                         return mod;
 313
 314                 if (mod->loaded || mod->mempool)
 315                         Mod_UnloadModel(mod);
 316
 317                 if (developer_loading.integer)
 318                         Con_Printf("loading model %s\n", mod->name);
 319
 320                 mod->used = true;
 321                 mod->crc = (unsigned int)-1;
 322                 mod->loaded = false;
 323
 324                 VectorClear(mod->normalmins);
 325                 VectorClear(mod->normalmaxs);
 326                 VectorClear(mod->yawmins);
 327                 VectorClear(mod->yawmaxs);
 328                 VectorClear(mod->rotatedmins);
 329                 VectorClear(mod->rotatedmaxs);
 330
 331                 mod->modeldatatypestring = "null";
 332                 mod->type = mod_null;
 333                 mod->Draw = R_Model_Null_Draw;
 334                 mod->numframes = 2;
 335                 mod->numskins = 1;
 336
 337                 // no fatal errors occurred, so this model is ready to use.
 338                 mod->loaded = true;
 339
 340                 return mod;
 341         }
 342
 343         crc = 0;
 344         buf = NULL;
 345
 346         // even if the model is loaded it still may need reloading...
 347
 348         // if it is not loaded or checkdisk is true we need to calculate the crc
 349         if (!mod->loaded || checkdisk)
 350         {
 351                 if (checkdisk && mod->loaded)
 352                         Con_DPrintf("checking model %s\n", mod->name);
 353                 buf = FS_LoadFile (mod->name, tempmempool, false, &filesize);
 354                 if (buf)
 355                 {
 356                         crc = CRC_Block((unsigned char *)buf, filesize);
 357                         // we need to reload the model if the crc does not match
 358                         if (mod->crc != crc)
 359                                 mod->loaded = false;
 360                 }
 361         }
 362
 363         // if the model is already loaded and checks passed, just return
 364         if (mod->loaded)
 365         {
 366                 if (buf)
 367                         Mem_Free(buf);
 368                 return mod;
 369         }
 370
 371         if (developer_loading.integer)
 372                 Con_Printf("loading model %s\n", mod->name);
 373
 374         SCR_PushLoadingScreen(true, mod->name, 1);
 375
 376         // LordHavoc: unload the existing model in this slot (if there is one)
 377         if (mod->loaded || mod->mempool)
 378                 Mod_UnloadModel(mod);
 379
 380         // load the model
 381         mod->used = true;
 382         mod->crc = crc;
 383         // errors can prevent the corresponding mod->loaded = true;
 384         mod->loaded = false;
 385
 386         // default model radius and bounding box (mainly for missing models)
 387         mod->radius = 16;
 388         VectorSet(mod->normalmins, -mod->radius, -mod->radius, -mod->radius);
 389         VectorSet(mod->normalmaxs, mod->radius, mod->radius, mod->radius);
 390         VectorSet(mod->yawmins, -mod->radius, -mod->radius, -mod->radius);
 391         VectorSet(mod->yawmaxs, mod->radius, mod->radius, mod->radius);
 392         VectorSet(mod->rotatedmins, -mod->radius, -mod->radius, -mod->radius);
 393         VectorSet(mod->rotatedmaxs, mod->radius, mod->radius, mod->radius);
 394
 395         if (!q3shaders_mem)
 396         {
 397                 // load q3 shaders for the first time, or after a level change
 398                 Mod_LoadQ3Shaders();
 399         }
 400
 401         if (buf)
 402         {
 403                 char *bufend = (char *)buf + filesize;
 404
 405                 // all models use memory, so allocate a memory pool
 406                 mod->mempool = Mem_AllocPool(mod->name, 0, NULL);
 407
 408                 num = LittleLong(*((int *)buf));
 409                 // call the apropriate loader
 410                 loadmodel = mod;
 411                      if (!strcasecmp(FS_FileExtension(mod->name), "obj")) Mod_OBJ_Load(mod, buf, bufend);
 412                 else if (!memcmp(buf, "IDPO", 4)) Mod_IDP0_Load(mod, buf, bufend);
 413                 else if (!memcmp(buf, "IDP2", 4)) Mod_IDP2_Load(mod, buf, bufend);
 414                 else if (!memcmp(buf, "IDP3", 4)) Mod_IDP3_Load(mod, buf, bufend);
 415                 else if (!memcmp(buf, "IDSP", 4)) Mod_IDSP_Load(mod, buf, bufend);
 416                 else if (!memcmp(buf, "IDS2", 4)) Mod_IDS2_Load(mod, buf, bufend);
 417                 else if (!memcmp(buf, "IBSP", 4)) Mod_IBSP_Load(mod, buf, bufend);
 418                 else if (!memcmp(buf, "ZYMOTICMODEL", 12)) Mod_ZYMOTICMODEL_Load(mod, buf, bufend);
 419                 else if (!memcmp(buf, "DARKPLACESMODEL", 16)) Mod_DARKPLACESMODEL_Load(mod, buf, bufend);
 420                 else if (!memcmp(buf, "ACTRHEAD", 8)) Mod_PSKMODEL_Load(mod, buf, bufend);
 421                 else if (strlen(mod->name) >= 4 && !strcmp(mod->name + strlen(mod->name) - 4, ".map")) Mod_MAP_Load(mod, buf, bufend);
 422                 else if (num == BSPVERSION || num == 30) Mod_Q1BSP_Load(mod, buf, bufend);
 423                 else Con_Printf("Mod_LoadModel: model \"%s\" is of unknown/unsupported type\n", mod->name);
 424                 Mem_Free(buf);
 425
 426                 buf = FS_LoadFile (va("%s.framegroups", mod->name), tempmempool, false, &filesize);
 427                 if(buf)
 428                 {
 429                         Mod_FrameGroupify(mod, (const char *)buf);
 430                         Mem_Free(buf);
 431                 }
 432
 433                 Mod_BuildVBOs();
 434         }
 435         else if (crash)
 436         {
 437                 // LordHavoc: Sys_Error was *ANNOYING*
 438                 Con_Printf ("Mod_LoadModel: %s not found\n", mod->name);
 439         }
 440
 441         // no fatal errors occurred, so this model is ready to use.
 442         mod->loaded = true;
 443
 444         SCR_PopLoadingScreen(false);
 445
 446         return mod;
 447 }
 448
 449 void Mod_ClearUsed(void)
 450 {
 451         int i;
 452         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 453         dp_model_t *mod;
 454         for (i = 0;i < nummodels;i++)
 455                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0])
 456                         mod->used = false;
 457 }
 458
 459 void Mod_PurgeUnused(void)
 460 {
 461         int i;
 462         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 463         dp_model_t *mod;
 464         for (i = 0;i < nummodels;i++)
 465         {
 466                 if ((mod = (dp_model_t*) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && !mod->used)
 467                 {
 468                         Mod_UnloadModel(mod);
 469                         Mem_ExpandableArray_FreeRecord(&models, mod);
 470                 }
 471         }
 472 }
 473
 474 /*
 475 ==================
 476 Mod_FindName
 477
 478 ==================
 479 */
 480 dp_model_t *Mod_FindName(const char *name, const char *parentname)
 481 {
 482         int i;
 483         int nummodels;
 484         dp_model_t *mod;
 485
 486         if (!parentname)
 487                 parentname = "";
 488
 489         // if we're not dedicatd, the renderer calls will crash without video
 490         Host_StartVideo();
 491
 492         nummodels = Mem_ExpandableArray_IndexRange(&models);
 493
 494         if (!name[0])
 495                 Host_Error ("Mod_ForName: NULL name");
 496
 497         // search the currently loaded models
 498         for (i = 0;i < nummodels;i++)
 499         {
 500                 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))))
 501                 {
 502                         mod->used = true;
 503                         return mod;
 504                 }
 505         }
 506
 507         // no match found, create a new one
 508         mod = (dp_model_t *) Mem_ExpandableArray_AllocRecord(&models);
 509         strlcpy(mod->name, name, sizeof(mod->name));
 510         if (parentname[0])
 511                 mod->brush.parentmodel = Mod_FindName(parentname, NULL);
 512         else
 513                 mod->brush.parentmodel = NULL;
 514         mod->loaded = false;
 515         mod->used = true;
 516         return mod;
 517 }
 518
 519 /*
 520 ==================
 521 Mod_ForName
 522
 523 Loads in a model for the given name
 524 ==================
 525 */
 526 dp_model_t *Mod_ForName(const char *name, qboolean crash, qboolean checkdisk, const char *parentname)
 527 {
 528         dp_model_t *model;
 529         model = Mod_FindName(name, parentname);
 530         if (!model->loaded || checkdisk)
 531                 Mod_LoadModel(model, crash, checkdisk);
 532         return model;
 533 }
 534
 535 /*
 536 ==================
 537 Mod_Reload
 538
 539 Reloads all models if they have changed
 540 ==================
 541 */
 542 void Mod_Reload(void)
 543 {
 544         int i, count;
 545         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 546         dp_model_t *mod;
 547
 548         SCR_PushLoadingScreen(false, "Reloading models", 1.0);
 549         count = 0;
 550         for (i = 0;i < nummodels;i++)
 551                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 552                         ++count;
 553         for (i = 0;i < nummodels;i++)
 554                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*' && mod->used)
 555                 {
 556                         SCR_PushLoadingScreen(true, mod->name, 1.0 / count);
 557                         Mod_LoadModel(mod, true, true);
 558                         SCR_PopLoadingScreen(false);
 559                 }
 560         SCR_PopLoadingScreen(false);
 561 }
 562
 563 unsigned char *mod_base;
 564
 565
 566 //=============================================================================
 567
 568 /*
 569 ================
 570 Mod_Print
 571 ================
 572 */
 573 static void Mod_Print(void)
 574 {
 575         int i;
 576         int nummodels = Mem_ExpandableArray_IndexRange(&models);
 577         dp_model_t *mod;
 578
 579         Con_Print("Loaded models:\n");
 580         for (i = 0;i < nummodels;i++)
 581         {
 582                 if ((mod = (dp_model_t *) Mem_ExpandableArray_RecordAtIndex(&models, i)) && mod->name[0] && mod->name[0] != '*')
 583                 {
 584                         if (mod->brush.numsubmodels)
 585                                 Con_Printf("%4iK %s (%i submodels)\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name, mod->brush.numsubmodels);
 586                         else
 587                                 Con_Printf("%4iK %s\n", mod->mempool ? (int)((mod->mempool->totalsize + 1023) / 1024) : 0, mod->name);
 588                 }
 589         }
 590 }
 591
 592 /*
 593 ================
 594 Mod_Precache
 595 ================
 596 */
 597 static void Mod_Precache(void)
 598 {
 599         if (Cmd_Argc() == 2)
 600                 Mod_ForName(Cmd_Argv(1), false, true, Cmd_Argv(1)[0] == '*' ? cl.model_name[1] : NULL);
 601         else
 602                 Con_Print("usage: modelprecache <filename>\n");
 603 }
 604
 605 int Mod_BuildVertexRemapTableFromElements(int numelements, const int *elements, int numvertices, int *remapvertices)
 606 {
 607         int i, count;
 608         unsigned char *used;
 609         used = (unsigned char *)Mem_Alloc(tempmempool, numvertices);
 610         memset(used, 0, numvertices);
 611         for (i = 0;i < numelements;i++)
 612                 used[elements[i]] = 1;
 613         for (i = 0, count = 0;i < numvertices;i++)
 614                 remapvertices[i] = used[i] ? count++ : -1;
 615         Mem_Free(used);
 616         return count;
 617 }
 618
 619 #if 1
 620 // fast way, using an edge hash
 621 #define TRIANGLEEDGEHASH 8192
 622 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 623 {
 624         int i, j, p, e1, e2, *n, hashindex, count, match;
 625         const int *e;
 626         typedef struct edgehashentry_s
 627         {
 628                 struct edgehashentry_s *next;
 629                 int triangle;
 630                 int element[2];
 631         }
 632         edgehashentry_t;
 633         edgehashentry_t *edgehash[TRIANGLEEDGEHASH], *edgehashentries, edgehashentriesbuffer[TRIANGLEEDGEHASH*3], *hash;
 634         memset(edgehash, 0, sizeof(edgehash));
 635         edgehashentries = edgehashentriesbuffer;
 636         // if there are too many triangles for the stack array, allocate larger buffer
 637         if (numtriangles > TRIANGLEEDGEHASH)
 638                 edgehashentries = (edgehashentry_t *)Mem_Alloc(tempmempool, numtriangles * 3 * sizeof(edgehashentry_t));
 639         // find neighboring triangles
 640         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 641         {
 642                 for (j = 0, p = 2;j < 3;p = j, j++)
 643                 {
 644                         e1 = e[p];
 645                         e2 = e[j];
 646                         // this hash index works for both forward and backward edges
 647                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 648                         hash = edgehashentries + i * 3 + j;
 649                         hash->next = edgehash[hashindex];
 650                         edgehash[hashindex] = hash;
 651                         hash->triangle = i;
 652                         hash->element[0] = e1;
 653                         hash->element[1] = e2;
 654                 }
 655         }
 656         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 657         {
 658                 for (j = 0, p = 2;j < 3;p = j, j++)
 659                 {
 660                         e1 = e[p];
 661                         e2 = e[j];
 662                         // this hash index works for both forward and backward edges
 663                         hashindex = (unsigned int)(e1 + e2) % TRIANGLEEDGEHASH;
 664                         count = 0;
 665                         match = -1;
 666                         for (hash = edgehash[hashindex];hash;hash = hash->next)
 667                         {
 668                                 if (hash->element[0] == e2 && hash->element[1] == e1)
 669                                 {
 670                                         if (hash->triangle != i)
 671                                                 match = hash->triangle;
 672                                         count++;
 673                                 }
 674                                 else if ((hash->element[0] == e1 && hash->element[1] == e2))
 675                                         count++;
 676                         }
 677                         // detect edges shared by three triangles and make them seams
 678                         if (count > 2)
 679                                 match = -1;
 680                         n[p] = match;
 681                 }
 682
 683                 // also send a keepalive here (this can take a while too!)
 684                 CL_KeepaliveMessage(false);
 685         }
 686         // free the allocated buffer
 687         if (edgehashentries != edgehashentriesbuffer)
 688                 Mem_Free(edgehashentries);
 689 }
 690 #else
 691 // very slow but simple way
 692 static int Mod_FindTriangleWithEdge(const int *elements, int numtriangles, int start, int end, int ignore)
 693 {
 694         int i, match, count;
 695         count = 0;
 696         match = -1;
 697         for (i = 0;i < numtriangles;i++, elements += 3)
 698         {
 699                      if ((elements[0] == start && elements[1] == end)
 700                       || (elements[1] == start && elements[2] == end)
 701                       || (elements[2] == start && elements[0] == end))
 702                 {
 703                         if (i != ignore)
 704                                 match = i;
 705                         count++;
 706                 }
 707                 else if ((elements[1] == start && elements[0] == end)
 708                       || (elements[2] == start && elements[1] == end)
 709                       || (elements[0] == start && elements[2] == end))
 710                         count++;
 711         }
 712         // detect edges shared by three triangles and make them seams
 713         if (count > 2)
 714                 match = -1;
 715         return match;
 716 }
 717
 718 void Mod_BuildTriangleNeighbors(int *neighbors, const int *elements, int numtriangles)
 719 {
 720         int i, *n;
 721         const int *e;
 722         for (i = 0, e = elements, n = neighbors;i < numtriangles;i++, e += 3, n += 3)
 723         {
 724                 n[0] = Mod_FindTriangleWithEdge(elements, numtriangles, e[1], e[0], i);
 725                 n[1] = Mod_FindTriangleWithEdge(elements, numtriangles, e[2], e[1], i);
 726                 n[2] = Mod_FindTriangleWithEdge(elements, numtriangles, e[0], e[2], i);
 727         }
 728 }
 729 #endif
 730
 731 void Mod_ValidateElements(int *elements, int numtriangles, int firstvertex, int numverts, const char *filename, int fileline)
 732 {
 733         int i, warned = false, endvertex = firstvertex + numverts;
 734         for (i = 0;i < numtriangles * 3;i++)
 735         {
 736                 if (elements[i] < firstvertex || elements[i] >= endvertex)
 737                 {
 738                         if (!warned)
 739                         {
 740                                 warned = true;
 741                                 Con_Printf("Mod_ValidateElements: out of bounds elements detected at %s:%d\n", filename, fileline);
 742                         }
 743                         elements[i] = firstvertex;
 744                 }
 745         }
 746 }
 747
 748 // warning: this is an expensive function!
 749 void Mod_BuildNormals(int firstvertex, int numvertices, int numtriangles, const float *vertex3f, const int *elements, float *normal3f, qboolean areaweighting)
 750 {
 751         int i, j;
 752         const int *element;
 753         float *vectorNormal;
 754         float areaNormal[3];
 755         // clear the vectors
 756         memset(normal3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 757         // process each vertex of each triangle and accumulate the results
 758         // use area-averaging, to make triangles with a big area have a bigger
 759         // weighting on the vertex normal than triangles with a small area
 760         // to do so, just add the 'normals' together (the bigger the area
 761         // the greater the length of the normal is
 762         element = elements;
 763         for (i = 0; i < numtriangles; i++, element += 3)
 764         {
 765                 TriangleNormal(
 766                         vertex3f + element[0] * 3,
 767                         vertex3f + element[1] * 3,
 768                         vertex3f + element[2] * 3,
 769                         areaNormal
 770                         );
 771
 772                 if (!areaweighting)
 773                         VectorNormalize(areaNormal);
 774
 775                 for (j = 0;j < 3;j++)
 776                 {
 777                         vectorNormal = normal3f + element[j] * 3;
 778                         vectorNormal[0] += areaNormal[0];
 779                         vectorNormal[1] += areaNormal[1];
 780                         vectorNormal[2] += areaNormal[2];
 781                 }
 782         }
 783         // and just normalize the accumulated vertex normal in the end
 784         vectorNormal = normal3f + 3 * firstvertex;
 785         for (i = 0; i < numvertices; i++, vectorNormal += 3)
 786                 VectorNormalize(vectorNormal);
 787 }
 788
 789 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)
 790 {
 791         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 792         // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 793         // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 794
 795         // 6 multiply, 9 subtract
 796         VectorSubtract(v1, v0, v10);
 797         VectorSubtract(v2, v0, v20);
 798         normal3f[0] = v20[1] * v10[2] - v20[2] * v10[1];
 799         normal3f[1] = v20[2] * v10[0] - v20[0] * v10[2];
 800         normal3f[2] = v20[0] * v10[1] - v20[1] * v10[0];
 801         // 12 multiply, 10 subtract
 802         tc10[1] = tc1[1] - tc0[1];
 803         tc20[1] = tc2[1] - tc0[1];
 804         svector3f[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 805         svector3f[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 806         svector3f[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 807         tc10[0] = tc1[0] - tc0[0];
 808         tc20[0] = tc2[0] - tc0[0];
 809         tvector3f[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 810         tvector3f[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 811         tvector3f[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 812         // 12 multiply, 4 add, 6 subtract
 813         f = DotProduct(svector3f, normal3f);
 814         svector3f[0] -= f * normal3f[0];
 815         svector3f[1] -= f * normal3f[1];
 816         svector3f[2] -= f * normal3f[2];
 817         f = DotProduct(tvector3f, normal3f);
 818         tvector3f[0] -= f * normal3f[0];
 819         tvector3f[1] -= f * normal3f[1];
 820         tvector3f[2] -= f * normal3f[2];
 821         // if texture is mapped the wrong way (counterclockwise), the tangents
 822         // have to be flipped, this is detected by calculating a normal from the
 823         // two tangents, and seeing if it is opposite the surface normal
 824         // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 825         CrossProduct(tvector3f, svector3f, tangentcross);
 826         if (DotProduct(tangentcross, normal3f) < 0)
 827         {
 828                 VectorNegate(svector3f, svector3f);
 829                 VectorNegate(tvector3f, tvector3f);
 830         }
 831 }
 832
 833 // warning: this is a very expensive function!
 834 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)
 835 {
 836         int i, tnum;
 837         float sdir[3], tdir[3], normal[3], *sv, *tv;
 838         const float *v0, *v1, *v2, *tc0, *tc1, *tc2, *n;
 839         float f, tangentcross[3], v10[3], v20[3], tc10[2], tc20[2];
 840         const int *e;
 841         // clear the vectors
 842         memset(svector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 843         memset(tvector3f + 3 * firstvertex, 0, numvertices * sizeof(float[3]));
 844         // process each vertex of each triangle and accumulate the results
 845         for (tnum = 0, e = elements;tnum < numtriangles;tnum++, e += 3)
 846         {
 847                 v0 = vertex3f + e[0] * 3;
 848                 v1 = vertex3f + e[1] * 3;
 849                 v2 = vertex3f + e[2] * 3;
 850                 tc0 = texcoord2f + e[0] * 2;
 851                 tc1 = texcoord2f + e[1] * 2;
 852                 tc2 = texcoord2f + e[2] * 2;
 853
 854                 // 79 add/sub/negate/multiply (1 cycle), 1 compare (3 cycle?), total cycles not counting load/store/exchange roughly 82 cycles
 855                 // 6 add, 28 subtract, 39 multiply, 1 compare, 50% chance of 6 negates
 856
 857                 // calculate the edge directions and surface normal
 858                 // 6 multiply, 9 subtract
 859                 VectorSubtract(v1, v0, v10);
 860                 VectorSubtract(v2, v0, v20);
 861                 normal[0] = v20[1] * v10[2] - v20[2] * v10[1];
 862                 normal[1] = v20[2] * v10[0] - v20[0] * v10[2];
 863                 normal[2] = v20[0] * v10[1] - v20[1] * v10[0];
 864
 865                 // calculate the tangents
 866                 // 12 multiply, 10 subtract
 867                 tc10[1] = tc1[1] - tc0[1];
 868                 tc20[1] = tc2[1] - tc0[1];
 869                 sdir[0] = tc10[1] * v20[0] - tc20[1] * v10[0];
 870                 sdir[1] = tc10[1] * v20[1] - tc20[1] * v10[1];
 871                 sdir[2] = tc10[1] * v20[2] - tc20[1] * v10[2];
 872                 tc10[0] = tc1[0] - tc0[0];
 873                 tc20[0] = tc2[0] - tc0[0];
 874                 tdir[0] = tc10[0] * v20[0] - tc20[0] * v10[0];
 875                 tdir[1] = tc10[0] * v20[1] - tc20[0] * v10[1];
 876                 tdir[2] = tc10[0] * v20[2] - tc20[0] * v10[2];
 877
 878                 // if texture is mapped the wrong way (counterclockwise), the tangents
 879                 // have to be flipped, this is detected by calculating a normal from the
 880                 // two tangents, and seeing if it is opposite the surface normal
 881                 // 9 multiply, 2 add, 3 subtract, 1 compare, 50% chance of: 6 negates
 882                 CrossProduct(tdir, sdir, tangentcross);
 883                 if (DotProduct(tangentcross, normal) < 0)
 884                 {
 885                         VectorNegate(sdir, sdir);
 886                         VectorNegate(tdir, tdir);
 887                 }
 888
 889                 if (!areaweighting)
 890                 {
 891                         VectorNormalize(sdir);
 892                         VectorNormalize(tdir);
 893                 }
 894                 for (i = 0;i < 3;i++)
 895                 {
 896                         VectorAdd(svector3f + e[i]*3, sdir, svector3f + e[i]*3);
 897                         VectorAdd(tvector3f + e[i]*3, tdir, tvector3f + e[i]*3);
 898                 }
 899         }
 900         // make the tangents completely perpendicular to the surface normal, and
 901         // then normalize them
 902         // 16 assignments, 2 divide, 2 sqrt, 2 negates, 14 adds, 24 multiplies
 903         for (i = 0, sv = svector3f + 3 * firstvertex, tv = tvector3f + 3 * firstvertex, n = normal3f + 3 * firstvertex;i < numvertices;i++, sv += 3, tv += 3, n += 3)
 904         {
 905                 f = -DotProduct(sv, n);
 906                 VectorMA(sv, f, n, sv);
 907                 VectorNormalize(sv);
 908                 f = -DotProduct(tv, n);
 909                 VectorMA(tv, f, n, tv);
 910                 VectorNormalize(tv);
 911         }
 912 }
 913
 914 void Mod_AllocSurfMesh(mempool_t *mempool, int numvertices, int numtriangles, qboolean lightmapoffsets, qboolean vertexcolors, qboolean neighbors)
 915 {
 916         unsigned char *data;
 917         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));
 918         loadmodel->surfmesh.num_vertices = numvertices;
 919         loadmodel->surfmesh.num_triangles = numtriangles;
 920         if (loadmodel->surfmesh.num_vertices)
 921         {
 922                 loadmodel->surfmesh.data_vertex3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 923                 loadmodel->surfmesh.data_svector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 924                 loadmodel->surfmesh.data_tvector3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 925                 loadmodel->surfmesh.data_normal3f = (float *)data, data += sizeof(float[3]) * loadmodel->surfmesh.num_vertices;
 926                 loadmodel->surfmesh.data_texcoordtexture2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 927                 loadmodel->surfmesh.data_texcoordlightmap2f = (float *)data, data += sizeof(float[2]) * loadmodel->surfmesh.num_vertices;
 928                 if (vertexcolors)
 929                         loadmodel->surfmesh.data_lightmapcolor4f = (float *)data, data += sizeof(float[4]) * loadmodel->surfmesh.num_vertices;
 930                 if (lightmapoffsets)
 931                         loadmodel->surfmesh.data_lightmapoffsets = (int *)data, data += sizeof(int) * loadmodel->surfmesh.num_vertices;
 932         }
 933         if (loadmodel->surfmesh.num_triangles)
 934         {
 935                 loadmodel->surfmesh.data_element3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 936                 if (neighbors)
 937                         loadmodel->surfmesh.data_neighbor3i = (int *)data, data += sizeof(int[3]) * loadmodel->surfmesh.num_triangles;
 938                 if (loadmodel->surfmesh.num_vertices <= 65536)
 939                         loadmodel->surfmesh.data_element3s = (unsigned short *)data, data += sizeof(unsigned short[3]) * loadmodel->surfmesh.num_triangles;
 940         }
 941 }
 942
 943 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)
 944 {
 945         shadowmesh_t *newmesh;
 946         unsigned char *data;
 947         int size;
 948         size = sizeof(shadowmesh_t);
 949         size += maxverts * sizeof(float[3]);
 950         if (light)
 951                 size += maxverts * sizeof(float[11]);
 952         size += maxtriangles * sizeof(int[3]);
 953         if (maxverts <= 65536)
 954                 size += maxtriangles * sizeof(unsigned short[3]);
 955         if (neighbors)
 956                 size += maxtriangles * sizeof(int[3]);
 957         if (expandable)
 958                 size += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *) + maxverts * sizeof(shadowmeshvertexhash_t);
 959         data = (unsigned char *)Mem_Alloc(mempool, size);
 960         newmesh = (shadowmesh_t *)data;data += sizeof(*newmesh);
 961         newmesh->map_diffuse = map_diffuse;
 962         newmesh->map_specular = map_specular;
 963         newmesh->map_normal = map_normal;
 964         newmesh->maxverts = maxverts;
 965         newmesh->maxtriangles = maxtriangles;
 966         newmesh->numverts = 0;
 967         newmesh->numtriangles = 0;
 968         memset(newmesh->sideoffsets, 0, sizeof(newmesh->sideoffsets));
 969         memset(newmesh->sidetotals, 0, sizeof(newmesh->sidetotals));
 970
 971         newmesh->vertex3f = (float *)data;data += maxverts * sizeof(float[3]);
 972         if (light)
 973         {
 974                 newmesh->svector3f = (float *)data;data += maxverts * sizeof(float[3]);
 975                 newmesh->tvector3f = (float *)data;data += maxverts * sizeof(float[3]);
 976                 newmesh->normal3f = (float *)data;data += maxverts * sizeof(float[3]);
 977                 newmesh->texcoord2f = (float *)data;data += maxverts * sizeof(float[2]);
 978         }
 979         newmesh->element3i = (int *)data;data += maxtriangles * sizeof(int[3]);
 980         if (neighbors)
 981         {
 982                 newmesh->neighbor3i = (int *)data;data += maxtriangles * sizeof(int[3]);
 983         }
 984         if (expandable)
 985         {
 986                 newmesh->vertexhashtable = (shadowmeshvertexhash_t **)data;data += SHADOWMESHVERTEXHASH * sizeof(shadowmeshvertexhash_t *);
 987                 newmesh->vertexhashentries = (shadowmeshvertexhash_t *)data;data += maxverts * sizeof(shadowmeshvertexhash_t);
 988         }
 989         if (maxverts <= 65536)
 990                 newmesh->element3s = (unsigned short *)data;data += maxtriangles * sizeof(unsigned short[3]);
 991         return newmesh;
 992 }
 993
 994 shadowmesh_t *Mod_ShadowMesh_ReAlloc(mempool_t *mempool, shadowmesh_t *oldmesh, int light, int neighbors)
 995 {
 996         shadowmesh_t *newmesh;
 997         newmesh = Mod_ShadowMesh_Alloc(mempool, oldmesh->numverts, oldmesh->numtriangles, oldmesh->map_diffuse, oldmesh->map_specular, oldmesh->map_normal, light, neighbors, false);
 998         newmesh->numverts = oldmesh->numverts;
 999         newmesh->numtriangles = oldmesh->numtriangles;
1000         memcpy(newmesh->sideoffsets, oldmesh->sideoffsets, sizeof(oldmesh->sideoffsets));
1001         memcpy(newmesh->sidetotals, oldmesh->sidetotals, sizeof(oldmesh->sidetotals));
1002
1003         memcpy(newmesh->vertex3f, oldmesh->vertex3f, oldmesh->numverts * sizeof(float[3]));
1004         if (newmesh->svector3f && oldmesh->svector3f)
1005         {
1006                 memcpy(newmesh->svector3f, oldmesh->svector3f, oldmesh->numverts * sizeof(float[3]));
1007                 memcpy(newmesh->tvector3f, oldmesh->tvector3f, oldmesh->numverts * sizeof(float[3]));
1008                 memcpy(newmesh->normal3f, oldmesh->normal3f, oldmesh->numverts * sizeof(float[3]));
1009                 memcpy(newmesh->texcoord2f, oldmesh->texcoord2f, oldmesh->numverts * sizeof(float[2]));
1010         }
1011         memcpy(newmesh->element3i, oldmesh->element3i, oldmesh->numtriangles * sizeof(int[3]));
1012         if (newmesh->neighbor3i && oldmesh->neighbor3i)
1013                 memcpy(newmesh->neighbor3i, oldmesh->neighbor3i, oldmesh->numtriangles * sizeof(int[3]));
1014         return newmesh;
1015 }
1016
1017 int Mod_ShadowMesh_AddVertex(shadowmesh_t *mesh, float *vertex14f)
1018 {
1019         int hashindex, vnum;
1020         shadowmeshvertexhash_t *hash;
1021         // this uses prime numbers intentionally
1022         hashindex = (unsigned int) (vertex14f[0] * 2003 + vertex14f[1] * 4001 + vertex14f[2] * 7919) % SHADOWMESHVERTEXHASH;
1023         for (hash = mesh->vertexhashtable[hashindex];hash;hash = hash->next)
1024         {
1025                 vnum = (hash - mesh->vertexhashentries);
1026                 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]))
1027                  && (mesh->svector3f == NULL || (mesh->svector3f[vnum * 3 + 0] == vertex14f[3] && mesh->svector3f[vnum * 3 + 1] == vertex14f[4] && mesh->svector3f[vnum * 3 + 2] == vertex14f[5]))
1028                  && (mesh->tvector3f == NULL || (mesh->tvector3f[vnum * 3 + 0] == vertex14f[6] && mesh->tvector3f[vnum * 3 + 1] == vertex14f[7] && mesh->tvector3f[vnum * 3 + 2] == vertex14f[8]))
1029                  && (mesh->normal3f == NULL || (mesh->normal3f[vnum * 3 + 0] == vertex14f[9] && mesh->normal3f[vnum * 3 + 1] == vertex14f[10] && mesh->normal3f[vnum * 3 + 2] == vertex14f[11]))
1030                  && (mesh->texcoord2f == NULL || (mesh->texcoord2f[vnum * 2 + 0] == vertex14f[12] && mesh->texcoord2f[vnum * 2 + 1] == vertex14f[13])))
1031                         return hash - mesh->vertexhashentries;
1032         }
1033         vnum = mesh->numverts++;
1034         hash = mesh->vertexhashentries + vnum;
1035         hash->next = mesh->vertexhashtable[hashindex];
1036         mesh->vertexhashtable[hashindex] = hash;
1037         if (mesh->vertex3f) {mesh->vertex3f[vnum * 3 + 0] = vertex14f[0];mesh->vertex3f[vnum * 3 + 1] = vertex14f[1];mesh->vertex3f[vnum * 3 + 2] = vertex14f[2];}
1038         if (mesh->svector3f) {mesh->svector3f[vnum * 3 + 0] = vertex14f[3];mesh->svector3f[vnum * 3 + 1] = vertex14f[4];mesh->svector3f[vnum * 3 + 2] = vertex14f[5];}
1039         if (mesh->tvector3f) {mesh->tvector3f[vnum * 3 + 0] = vertex14f[6];mesh->tvector3f[vnum * 3 + 1] = vertex14f[7];mesh->tvector3f[vnum * 3 + 2] = vertex14f[8];}
1040         if (mesh->normal3f) {mesh->normal3f[vnum * 3 + 0] = vertex14f[9];mesh->normal3f[vnum * 3 + 1] = vertex14f[10];mesh->normal3f[vnum * 3 + 2] = vertex14f[11];}
1041         if (mesh->texcoord2f) {mesh->texcoord2f[vnum * 2 + 0] = vertex14f[12];mesh->texcoord2f[vnum * 2 + 1] = vertex14f[13];}
1042         return vnum;
1043 }
1044
1045 void Mod_ShadowMesh_AddTriangle(mempool_t *mempool, shadowmesh_t *mesh, rtexture_t *map_diffuse, rtexture_t *map_specular, rtexture_t *map_normal, float *vertex14f)
1046 {
1047         if (mesh->numtriangles == 0)
1048         {
1049                 // set the properties on this empty mesh to be more favorable...
1050                 // (note: this case only occurs for the first triangle added to a new mesh chain)
1051                 mesh->map_diffuse = map_diffuse;
1052                 mesh->map_specular = map_specular;
1053                 mesh->map_normal = map_normal;
1054         }
1055         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)
1056         {
1057                 if (mesh->next == NULL)
1058                         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);
1059                 mesh = mesh->next;
1060         }
1061         mesh->element3i[mesh->numtriangles * 3 + 0] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 0);
1062         mesh->element3i[mesh->numtriangles * 3 + 1] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 1);
1063         mesh->element3i[mesh->numtriangles * 3 + 2] = Mod_ShadowMesh_AddVertex(mesh, vertex14f + 14 * 2);
1064         mesh->numtriangles++;
1065 }
1066
1067 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)
1068 {
1069         int i, j, e;
1070         float vbuf[3*14], *v;
1071         memset(vbuf, 0, sizeof(vbuf));
1072         for (i = 0;i < numtris;i++)
1073         {
1074                 for (j = 0, v = vbuf;j < 3;j++, v += 14)
1075                 {
1076                         e = *element3i++;
1077                         if (vertex3f)
1078                         {
1079                                 v[0] = vertex3f[e * 3 + 0];
1080                                 v[1] = vertex3f[e * 3 + 1];
1081                                 v[2] = vertex3f[e * 3 + 2];
1082                         }
1083                         if (svector3f)
1084                         {
1085                                 v[3] = svector3f[e * 3 + 0];
1086                                 v[4] = svector3f[e * 3 + 1];
1087                                 v[5] = svector3f[e * 3 + 2];
1088                         }
1089                         if (tvector3f)
1090                         {
1091                                 v[6] = tvector3f[e * 3 + 0];
1092                                 v[7] = tvector3f[e * 3 + 1];
1093                                 v[8] = tvector3f[e * 3 + 2];
1094                         }
1095                         if (normal3f)
1096                         {
1097                                 v[9] = normal3f[e * 3 + 0];
1098                                 v[10] = normal3f[e * 3 + 1];
1099                                 v[11] = normal3f[e * 3 + 2];
1100                         }
1101                         if (texcoord2f)
1102                         {
1103                                 v[12] = texcoord2f[e * 2 + 0];
1104                                 v[13] = texcoord2f[e * 2 + 1];
1105                         }
1106                 }
1107                 Mod_ShadowMesh_AddTriangle(mempool, mesh, map_diffuse, map_specular, map_normal, vbuf);
1108         }
1109
1110         // the triangle calculation can take a while, so let's do a keepalive here
1111         CL_KeepaliveMessage(false);
1112 }
1113
1114 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)
1115 {
1116         // the preparation before shadow mesh initialization can take a while, so let's do a keepalive here
1117         CL_KeepaliveMessage(false);
1118
1119         return Mod_ShadowMesh_Alloc(mempool, maxverts, maxtriangles, map_diffuse, map_specular, map_normal, light, neighbors, expandable);
1120 }
1121
1122 static void Mod_ShadowMesh_CreateVBOs(shadowmesh_t *mesh)
1123 {
1124         if (!gl_support_arb_vertex_buffer_object)
1125                 return;
1126
1127         // element buffer is easy because it's just one array
1128         if (mesh->numtriangles)
1129         {
1130                 if (mesh->element3s)
1131                         mesh->ebo3s = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, mesh->element3s, mesh->numtriangles * sizeof(unsigned short[3]), "shadowmesh");
1132                 else
1133                         mesh->ebo3i = R_Mesh_CreateStaticBufferObject(GL_ELEMENT_ARRAY_BUFFER_ARB, mesh->element3i, mesh->numtriangles * sizeof(unsigned int[3]), "shadowmesh");
1134         }
1135
1136         // vertex buffer is several arrays and we put them in the same buffer
1137         //
1138         // is this wise?  the texcoordtexture2f array is used with dynamic
1139         // vertex/svector/tvector/normal when rendering animated models, on the
1140         // other hand animated models don't use a lot of vertices anyway...
1141         if (mesh->numverts)
1142         {
1143                 size_t size;
1144                 unsigned char *mem;
1145                 size = 0;
1146                 mesh->vbooffset_vertex3f           = size;if (mesh->vertex3f          ) size += mesh->numverts * sizeof(float[3]);
1147                 mesh->vbooffset_svector3f          = size;if (mesh->svector3f         ) size += mesh->numverts * sizeof(float[3]);
1148                 mesh->vbooffset_tvector3f          = size;if (mesh->tvector3f         ) size += mesh->numverts * sizeof(float[3]);
1149                 mesh->vbooffset_normal3f           = size;if (mesh->normal3f          ) size += mesh->numverts * sizeof(float[3]);
1150                 mesh->vbooffset_texcoord2f         = size;if (mesh->texcoord2f        ) size += mesh->numverts * sizeof(float[2]);
1151                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
1152                 if (mesh->vertex3f          ) memcpy(mem + mesh->vbooffset_vertex3f          , mesh->vertex3f          , mesh->numverts * sizeof(float[3]));
1153                 if (mesh->svector3f         ) memcpy(mem + mesh->vbooffset_svector3f         , mesh->svector3f         , mesh->numverts * sizeof(float[3]));
1154                 if (mesh->tvector3f         ) memcpy(mem + mesh->vbooffset_tvector3f         , mesh->tvector3f         , mesh->numverts * sizeof(float[3]));
1155                 if (mesh->normal3f          ) memcpy(mem + mesh->vbooffset_normal3f          , mesh->normal3f          , mesh->numverts * sizeof(float[3]));
1156                 if (mesh->texcoord2f        ) memcpy(mem + mesh->vbooffset_texcoord2f        , mesh->texcoord2f        , mesh->numverts * sizeof(float[2]));
1157                 mesh->vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, "shadowmesh");
1158                 Mem_Free(mem);
1159         }
1160 }
1161
1162 shadowmesh_t *Mod_ShadowMesh_Finish(mempool_t *mempool, shadowmesh_t *firstmesh, qboolean light, qboolean neighbors, qboolean createvbo)
1163 {
1164         shadowmesh_t *mesh, *newmesh, *nextmesh;
1165         // reallocate meshs to conserve space
1166         for (mesh = firstmesh, firstmesh = NULL;mesh;mesh = nextmesh)
1167         {
1168                 nextmesh = mesh->next;
1169                 if (mesh->numverts >= 3 && mesh->numtriangles >= 1)
1170                 {
1171                         newmesh = Mod_ShadowMesh_ReAlloc(mempool, mesh, light, neighbors);
1172                         newmesh->next = firstmesh;
1173                         firstmesh = newmesh;
1174                         if (newmesh->element3s)
1175                         {
1176                                 int i;
1177                                 for (i = 0;i < newmesh->numtriangles*3;i++)
1178                                         newmesh->element3s[i] = newmesh->element3i[i];
1179                         }
1180                         if (createvbo)
1181                                 Mod_ShadowMesh_CreateVBOs(newmesh);
1182                 }
1183                 Mem_Free(mesh);
1184         }
1185
1186         // this can take a while, so let's do a keepalive here
1187         CL_KeepaliveMessage(false);
1188
1189         return firstmesh;
1190 }
1191
1192 void Mod_ShadowMesh_CalcBBox(shadowmesh_t *firstmesh, vec3_t mins, vec3_t maxs, vec3_t center, float *radius)
1193 {
1194         int i;
1195         shadowmesh_t *mesh;
1196         vec3_t nmins, nmaxs, ncenter, temp;
1197         float nradius2, dist2, *v;
1198         VectorClear(nmins);
1199         VectorClear(nmaxs);
1200         // calculate bbox
1201         for (mesh = firstmesh;mesh;mesh = mesh->next)
1202         {
1203                 if (mesh == firstmesh)
1204                 {
1205                         VectorCopy(mesh->vertex3f, nmins);
1206                         VectorCopy(mesh->vertex3f, nmaxs);
1207                 }
1208                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1209                 {
1210                         if (nmins[0] > v[0]) nmins[0] = v[0];if (nmaxs[0] < v[0]) nmaxs[0] = v[0];
1211                         if (nmins[1] > v[1]) nmins[1] = v[1];if (nmaxs[1] < v[1]) nmaxs[1] = v[1];
1212                         if (nmins[2] > v[2]) nmins[2] = v[2];if (nmaxs[2] < v[2]) nmaxs[2] = v[2];
1213                 }
1214         }
1215         // calculate center and radius
1216         ncenter[0] = (nmins[0] + nmaxs[0]) * 0.5f;
1217         ncenter[1] = (nmins[1] + nmaxs[1]) * 0.5f;
1218         ncenter[2] = (nmins[2] + nmaxs[2]) * 0.5f;
1219         nradius2 = 0;
1220         for (mesh = firstmesh;mesh;mesh = mesh->next)
1221         {
1222                 for (i = 0, v = mesh->vertex3f;i < mesh->numverts;i++, v += 3)
1223                 {
1224                         VectorSubtract(v, ncenter, temp);
1225                         dist2 = DotProduct(temp, temp);
1226                         if (nradius2 < dist2)
1227                                 nradius2 = dist2;
1228                 }
1229         }
1230         // return data
1231         if (mins)
1232                 VectorCopy(nmins, mins);
1233         if (maxs)
1234                 VectorCopy(nmaxs, maxs);
1235         if (center)
1236                 VectorCopy(ncenter, center);
1237         if (radius)
1238                 *radius = sqrt(nradius2);
1239 }
1240
1241 void Mod_ShadowMesh_Free(shadowmesh_t *mesh)
1242 {
1243         shadowmesh_t *nextmesh;
1244         for (;mesh;mesh = nextmesh)
1245         {
1246                 if (mesh->ebo3i)
1247                         R_Mesh_DestroyBufferObject(mesh->ebo3i);
1248                 if (mesh->ebo3s)
1249                         R_Mesh_DestroyBufferObject(mesh->ebo3s);
1250                 if (mesh->vbo)
1251                         R_Mesh_DestroyBufferObject(mesh->vbo);
1252                 nextmesh = mesh->next;
1253                 Mem_Free(mesh);
1254         }
1255 }
1256
1257 void Mod_CreateCollisionMesh(dp_model_t *mod)
1258 {
1259         int k;
1260         int numcollisionmeshtriangles;
1261         const msurface_t *surface;
1262         mempool_t *mempool = mod->mempool;
1263         if (!mempool && mod->brush.parentmodel)
1264                 mempool = mod->brush.parentmodel->mempool;
1265         // make a single combined collision mesh for physics engine use
1266         // TODO rewrite this to use the collision brushes as source, to fix issues with e.g. common/caulk which creates no drawsurface
1267         numcollisionmeshtriangles = 0;
1268         for (k = 0;k < mod->nummodelsurfaces;k++)
1269         {
1270                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1271                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1272                         continue;
1273                 numcollisionmeshtriangles += surface->num_triangles;
1274         }
1275         mod->brush.collisionmesh = Mod_ShadowMesh_Begin(mempool, numcollisionmeshtriangles * 3, numcollisionmeshtriangles, NULL, NULL, NULL, false, false, true);
1276         for (k = 0;k < mod->nummodelsurfaces;k++)
1277         {
1278                 surface = mod->data_surfaces + mod->firstmodelsurface + k;
1279                 if (!(surface->texture->supercontents & SUPERCONTENTS_SOLID))
1280                         continue;
1281                 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));
1282         }
1283         mod->brush.collisionmesh = Mod_ShadowMesh_Finish(mempool, mod->brush.collisionmesh, false, true, false);
1284 }
1285
1286 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)
1287 {
1288         float v[3], tc[3];
1289         v[0] = ix;
1290         v[1] = iy;
1291         if (ix >= 0 && iy >= 0 && ix < imagewidth && iy < imageheight)
1292                 v[2] = (imagepixels[((iy*imagewidth)+ix)*4+0] + imagepixels[((iy*imagewidth)+ix)*4+1] + imagepixels[((iy*imagewidth)+ix)*4+2]) * (1.0f / 765.0f);
1293         else
1294                 v[2] = 0;
1295         Matrix4x4_Transform(pixelstepmatrix, v, vertex3f);
1296         Matrix4x4_Transform(pixeltexturestepmatrix, v, tc);
1297         texcoord2f[0] = tc[0];
1298         texcoord2f[1] = tc[1];
1299 }
1300
1301 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)
1302 {
1303         float vup[3], vdown[3], vleft[3], vright[3];
1304         float tcup[3], tcdown[3], tcleft[3], tcright[3];
1305         float sv[3], tv[3], nl[3];
1306         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, pixelstepmatrix, pixeltexturestepmatrix);
1307         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy - 1, vup, tcup, pixelstepmatrix, pixeltexturestepmatrix);
1308         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix, iy + 1, vdown, tcdown, pixelstepmatrix, pixeltexturestepmatrix);
1309         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix - 1, iy, vleft, tcleft, pixelstepmatrix, pixeltexturestepmatrix);
1310         Mod_GetTerrainVertex3fTexCoord2fFromBGRA(imagepixels, imagewidth, imageheight, ix + 1, iy, vright, tcright, pixelstepmatrix, pixeltexturestepmatrix);
1311         Mod_BuildBumpVectors(vertex3f, vup, vright, texcoord2f, tcup, tcright, svector3f, tvector3f, normal3f);
1312         Mod_BuildBumpVectors(vertex3f, vright, vdown, texcoord2f, tcright, tcdown, sv, tv, nl);
1313         VectorAdd(svector3f, sv, svector3f);
1314         VectorAdd(tvector3f, tv, tvector3f);
1315         VectorAdd(normal3f, nl, normal3f);
1316         Mod_BuildBumpVectors(vertex3f, vdown, vleft, texcoord2f, tcdown, tcleft, sv, tv, nl);
1317         VectorAdd(svector3f, sv, svector3f);
1318         VectorAdd(tvector3f, tv, tvector3f);
1319         VectorAdd(normal3f, nl, normal3f);
1320         Mod_BuildBumpVectors(vertex3f, vleft, vup, texcoord2f, tcleft, tcup, sv, tv, nl);
1321         VectorAdd(svector3f, sv, svector3f);
1322         VectorAdd(tvector3f, tv, tvector3f);
1323         VectorAdd(normal3f, nl, normal3f);
1324 }
1325
1326 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)
1327 {
1328         int x, y, ix, iy, *e;
1329         e = element3i;
1330         for (y = 0;y < height;y++)
1331         {
1332                 for (x = 0;x < width;x++)
1333                 {
1334                         e[0] = (y + 1) * (width + 1) + (x + 0);
1335                         e[1] = (y + 0) * (width + 1) + (x + 0);
1336                         e[2] = (y + 1) * (width + 1) + (x + 1);
1337                         e[3] = (y + 0) * (width + 1) + (x + 0);
1338                         e[4] = (y + 0) * (width + 1) + (x + 1);
1339                         e[5] = (y + 1) * (width + 1) + (x + 1);
1340                         e += 6;
1341                 }
1342         }
1343         Mod_BuildTriangleNeighbors(neighbor3i, element3i, width*height*2);
1344         for (y = 0, iy = y1;y < height + 1;y++, iy++)
1345                 for (x = 0, ix = x1;x < width + 1;x++, ix++, vertex3f += 3, texcoord2f += 2, svector3f += 3, tvector3f += 3, normal3f += 3)
1346                         Mod_GetTerrainVertexFromBGRA(imagepixels, imagewidth, imageheight, ix, iy, vertex3f, texcoord2f, svector3f, tvector3f, normal3f, pixelstepmatrix, pixeltexturestepmatrix);
1347 }
1348
1349 #if 0
1350 void Mod_Terrain_SurfaceRecurseChunk(dp_model_t *model, int stepsize, int x, int y)
1351 {
1352         float mins[3];
1353         float maxs[3];
1354         float chunkwidth = min(stepsize, model->terrain.width - 1 - x);
1355         float chunkheight = min(stepsize, model->terrain.height - 1 - y);
1356         float viewvector[3];
1357         unsigned int firstvertex;
1358         unsigned int *e;
1359         float *v;
1360         if (chunkwidth < 2 || chunkheight < 2)
1361                 return;
1362         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]);
1363         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]);
1364         viewvector[0] = bound(mins[0], modelorg, maxs[0]) - model->terrain.vieworigin[0];
1365         viewvector[1] = bound(mins[1], modelorg, maxs[1]) - model->terrain.vieworigin[1];
1366         viewvector[2] = bound(mins[2], modelorg, maxs[2]) - model->terrain.vieworigin[2];
1367         if (stepsize > 1 && VectorLength(viewvector) < stepsize*model->terrain.scale[0]*r_terrain_lodscale.value)
1368         {
1369                 // too close for this stepsize, emit as 4 chunks instead
1370                 stepsize /= 2;
1371                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y);
1372                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y);
1373                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x, y+stepsize);
1374                 Mod_Terrain_SurfaceRecurseChunk(model, stepsize, x+stepsize, y+stepsize);
1375                 return;
1376         }
1377         // emit the geometry at stepsize into our vertex buffer / index buffer
1378         // we add two columns and two rows for skirt
1379         outwidth = chunkwidth+2;
1380         outheight = chunkheight+2;
1381         outwidth2 = outwidth-1;
1382         outheight2 = outheight-1;
1383         outwidth3 = outwidth+1;
1384         outheight3 = outheight+1;
1385         firstvertex = numvertices;
1386         e = model->terrain.element3i + numtriangles;
1387         numtriangles += chunkwidth*chunkheight*2+chunkwidth*2*2+chunkheight*2*2;
1388         v = model->terrain.vertex3f + numvertices;
1389         numvertices += (chunkwidth+1)*(chunkheight+1)+(chunkwidth+1)*2+(chunkheight+1)*2;
1390         // emit the triangles (note: the skirt is treated as two extra rows and two extra columns)
1391         for (ty = 0;ty < outheight;ty++)
1392         {
1393                 for (tx = 0;tx < outwidth;tx++)
1394                 {
1395                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1396                         *e++ = firstvertex + (ty  )*outwidth3+(tx+1);
1397                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1398                         *e++ = firstvertex + (ty  )*outwidth3+(tx  );
1399                         *e++ = firstvertex + (ty+1)*outwidth3+(tx+1);
1400                         *e++ = firstvertex + (ty+1)*outwidth3+(tx  );
1401                 }
1402         }
1403         // TODO: emit surface vertices (x+tx*stepsize, y+ty*stepsize)
1404         for (ty = 0;ty <= outheight;ty++)
1405         {
1406                 skirtrow = ty == 0 || ty == outheight;
1407                 ry = y+bound(1, ty, outheight)*stepsize;
1408                 for (tx = 0;tx <= outwidth;tx++)
1409                 {
1410                         skirt = skirtrow || tx == 0 || tx == outwidth;
1411                         rx = x+bound(1, tx, outwidth)*stepsize;
1412                         v[0] = rx*scale[0];
1413                         v[1] = ry*scale[1];
1414                         v[2] = heightmap[ry*terrainwidth+rx]*scale[2];
1415                         v += 3;
1416                 }
1417         }
1418         // TODO: emit skirt vertices
1419 }
1420
1421 void Mod_Terrain_UpdateSurfacesForViewOrigin(dp_model_t *model)
1422 {
1423         for (y = 0;y < model->terrain.size[1];y += model->terrain.
1424         Mod_Terrain_SurfaceRecurseChunk(model, model->terrain.maxstepsize, x, y);
1425         Mod_Terrain_BuildChunk(model,
1426 }
1427 #endif
1428
1429 q3wavefunc_t Mod_LoadQ3Shaders_EnumerateWaveFunc(const char *s)
1430 {
1431         if (!strcasecmp(s, "sin"))             return Q3WAVEFUNC_SIN;
1432         if (!strcasecmp(s, "square"))          return Q3WAVEFUNC_SQUARE;
1433         if (!strcasecmp(s, "triangle"))        return Q3WAVEFUNC_TRIANGLE;
1434         if (!strcasecmp(s, "sawtooth"))        return Q3WAVEFUNC_SAWTOOTH;
1435         if (!strcasecmp(s, "inversesawtooth")) return Q3WAVEFUNC_INVERSESAWTOOTH;
1436         if (!strcasecmp(s, "noise"))           return Q3WAVEFUNC_NOISE;
1437         Con_DPrintf("Mod_LoadQ3Shaders: unknown wavefunc %s\n", s);
1438         return Q3WAVEFUNC_NONE;
1439 }
1440
1441 void Mod_FreeQ3Shaders(void)
1442 {
1443         Mem_FreePool(&q3shaders_mem);
1444 }
1445
1446 static void Q3Shader_AddToHash (q3shaderinfo_t* shader)
1447 {
1448         unsigned short hash = CRC_Block_CaseInsensitive ((const unsigned char *)shader->name, strlen (shader->name));
1449         q3shader_hash_entry_t* entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
1450         q3shader_hash_entry_t* lastEntry = NULL;
1451         while (entry != NULL)
1452         {
1453                 if (strcasecmp (entry->shader.name, shader->name) == 0)
1454                 {
1455                         unsigned char *start, *end, *start2;
1456                         start = (unsigned char *) (&shader->Q3SHADERINFO_COMPARE_START);
1457                         end = ((unsigned char *) (&shader->Q3SHADERINFO_COMPARE_END)) + sizeof(shader->Q3SHADERINFO_COMPARE_END);
1458                         start2 = (unsigned char *) (&entry->shader.Q3SHADERINFO_COMPARE_START);
1459                         if(memcmp(start, start2, end - start))
1460                                 Con_Printf("Shader '%s' already defined, ignoring mismatching redeclaration\n", shader->name);
1461                         else
1462                                 Con_DPrintf("Shader '%s' already defined\n", shader->name);
1463                         return;
1464                 }
1465                 lastEntry = entry;
1466                 entry = entry->chain;
1467         }
1468         if (entry == NULL)
1469         {
1470                 if (lastEntry->shader.name[0] != 0)
1471                 {
1472                         /* Add to chain */
1473                         q3shader_hash_entry_t* newEntry = (q3shader_hash_entry_t*)
1474                           Mem_ExpandableArray_AllocRecord (&q3shader_data->hash_entries);
1475
1476                         while (lastEntry->chain != NULL) lastEntry = lastEntry->chain;
1477                         lastEntry->chain = newEntry;
1478                         newEntry->chain = NULL;
1479                         lastEntry = newEntry;
1480                 }
1481                 /* else: head of chain, in hash entry array */
1482                 entry = lastEntry;
1483         }
1484         memcpy (&entry->shader, shader, sizeof (q3shaderinfo_t));
1485 }
1486
1487 extern cvar_t r_picmipworld;
1488 void Mod_LoadQ3Shaders(void)
1489 {
1490         int j;
1491         int fileindex;
1492         fssearch_t *search;
1493         char *f;
1494         const char *text;
1495         q3shaderinfo_t shader;
1496         q3shaderinfo_layer_t *layer;
1497         int numparameters;
1498         char parameter[TEXTURE_MAXFRAMES + 4][Q3PATHLENGTH];
1499
1500         Mod_FreeQ3Shaders();
1501
1502         q3shaders_mem = Mem_AllocPool("q3shaders", 0, NULL);
1503         q3shader_data = (q3shader_data_t*)Mem_Alloc (q3shaders_mem,
1504                 sizeof (q3shader_data_t));
1505         Mem_ExpandableArray_NewArray (&q3shader_data->hash_entries,
1506                 q3shaders_mem, sizeof (q3shader_hash_entry_t), 256);
1507         Mem_ExpandableArray_NewArray (&q3shader_data->char_ptrs,
1508                 q3shaders_mem, sizeof (char**), 256);
1509
1510         search = FS_Search("scripts/*.shader", true, false);
1511         if (!search)
1512                 return;
1513         for (fileindex = 0;fileindex < search->numfilenames;fileindex++)
1514         {
1515                 text = f = (char *)FS_LoadFile(search->filenames[fileindex], tempmempool, false, NULL);
1516                 if (!f)
1517                         continue;
1518                 while (COM_ParseToken_QuakeC(&text, false))
1519                 {
1520                         memset (&shader, 0, sizeof(shader));
1521                         shader.reflectmin = 0;
1522                         shader.reflectmax = 1;
1523                         shader.refractfactor = 1;
1524                         Vector4Set(shader.refractcolor4f, 1, 1, 1, 1);
1525                         shader.reflectfactor = 1;
1526                         Vector4Set(shader.reflectcolor4f, 1, 1, 1, 1);
1527                         shader.r_water_wateralpha = 1;
1528                         shader.specularscalemod = 1;
1529                         shader.specularpowermod = 1;
1530
1531                         strlcpy(shader.name, com_token, sizeof(shader.name));
1532                         if (!COM_ParseToken_QuakeC(&text, false) || strcasecmp(com_token, "{"))
1533                         {
1534                                 Con_Printf("%s parsing error - expected \"{\", found \"%s\"\n", search->filenames[fileindex], com_token);
1535                                 break;
1536                         }
1537                         while (COM_ParseToken_QuakeC(&text, false))
1538                         {
1539                                 if (!strcasecmp(com_token, "}"))
1540                                         break;
1541                                 if (!strcasecmp(com_token, "{"))
1542                                 {
1543                                         static q3shaderinfo_layer_t dummy;
1544                                         if (shader.numlayers < Q3SHADER_MAXLAYERS)
1545                                         {
1546                                                 layer = shader.layers + shader.numlayers++;
1547                                         }
1548                                         else
1549                                         {
1550                                                 // parse and process it anyway, just don't store it (so a map $lightmap or such stuff still is found)
1551                                                 memset(&dummy, 0, sizeof(dummy));
1552                                                 layer = &dummy;
1553                                         }
1554                                         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1555                                         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1556                                         layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1557                                         layer->blendfunc[0] = GL_ONE;
1558                                         layer->blendfunc[1] = GL_ZERO;
1559                                         while (COM_ParseToken_QuakeC(&text, false))
1560                                         {
1561                                                 if (!strcasecmp(com_token, "}"))
1562                                                         break;
1563                                                 if (!strcasecmp(com_token, "\n"))
1564                                                         continue;
1565                                                 numparameters = 0;
1566                                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1567                                                 {
1568                                                         if (j < TEXTURE_MAXFRAMES + 4)
1569                                                         {
1570                                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1571                                                                 numparameters = j + 1;
1572                                                         }
1573                                                         if (!COM_ParseToken_QuakeC(&text, true))
1574                                                                 break;
1575                                                 }
1576                                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1577                                                 //      parameter[j][0] = 0;
1578                                                 if (developer.integer >= 100)
1579                                                 {
1580                                                         Con_Printf("%s %i: ", shader.name, shader.numlayers - 1);
1581                                                         for (j = 0;j < numparameters;j++)
1582                                                                 Con_Printf(" %s", parameter[j]);
1583                                                         Con_Print("\n");
1584                                                 }
1585                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "blendfunc"))
1586                                                 {
1587                                                         if (numparameters == 2)
1588                                                         {
1589                                                                 if (!strcasecmp(parameter[1], "add"))
1590                                                                 {
1591                                                                         layer->blendfunc[0] = GL_ONE;
1592                                                                         layer->blendfunc[1] = GL_ONE;
1593                                                                 }
1594                                                                 else if (!strcasecmp(parameter[1], "filter"))
1595                                                                 {
1596                                                                         layer->blendfunc[0] = GL_DST_COLOR;
1597                                                                         layer->blendfunc[1] = GL_ZERO;
1598                                                                 }
1599                                                                 else if (!strcasecmp(parameter[1], "blend"))
1600                                                                 {
1601                                                                         layer->blendfunc[0] = GL_SRC_ALPHA;
1602                                                                         layer->blendfunc[1] = GL_ONE_MINUS_SRC_ALPHA;
1603                                                                 }
1604                                                         }
1605                                                         else if (numparameters == 3)
1606                                                         {
1607                                                                 int k;
1608                                                                 for (k = 0;k < 2;k++)
1609                                                                 {
1610                                                                         if (!strcasecmp(parameter[k+1], "GL_ONE"))
1611                                                                                 layer->blendfunc[k] = GL_ONE;
1612                                                                         else if (!strcasecmp(parameter[k+1], "GL_ZERO"))
1613                                                                                 layer->blendfunc[k] = GL_ZERO;
1614                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_COLOR"))
1615                                                                                 layer->blendfunc[k] = GL_SRC_COLOR;
1616                                                                         else if (!strcasecmp(parameter[k+1], "GL_SRC_ALPHA"))
1617                                                                                 layer->blendfunc[k] = GL_SRC_ALPHA;
1618                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_COLOR"))
1619                                                                                 layer->blendfunc[k] = GL_DST_COLOR;
1620                                                                         else if (!strcasecmp(parameter[k+1], "GL_DST_ALPHA"))
1621                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1622                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_COLOR"))
1623                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_COLOR;
1624                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_SRC_ALPHA"))
1625                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_SRC_ALPHA;
1626                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_COLOR"))
1627                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_COLOR;
1628                                                                         else if (!strcasecmp(parameter[k+1], "GL_ONE_MINUS_DST_ALPHA"))
1629                                                                                 layer->blendfunc[k] = GL_ONE_MINUS_DST_ALPHA;
1630                                                                         else
1631                                                                                 layer->blendfunc[k] = GL_ONE; // default in case of parsing error
1632                                                                 }
1633                                                         }
1634                                                 }
1635                                                 if (numparameters >= 2 && !strcasecmp(parameter[0], "alphafunc"))
1636                                                         layer->alphatest = true;
1637                                                 if (numparameters >= 2 && (!strcasecmp(parameter[0], "map") || !strcasecmp(parameter[0], "clampmap")))
1638                                                 {
1639                                                         if (!strcasecmp(parameter[0], "clampmap"))
1640                                                                 layer->clampmap = true;
1641                                                         layer->numframes = 1;
1642                                                         layer->framerate = 1;
1643                                                         layer->texturename = (char**)Mem_ExpandableArray_AllocRecord (
1644                                                                 &q3shader_data->char_ptrs);
1645                                                         layer->texturename[0] = Mem_strdup (q3shaders_mem, parameter[1]);
1646                                                         if (!strcasecmp(parameter[1], "$lightmap"))
1647                                                                 shader.lighting = true;
1648                                                 }
1649                                                 else if (numparameters >= 3 && (!strcasecmp(parameter[0], "animmap") || !strcasecmp(parameter[0], "animclampmap")))
1650                                                 {
1651                                                         int i;
1652                                                         layer->numframes = min(numparameters - 2, TEXTURE_MAXFRAMES);
1653                                                         layer->framerate = atof(parameter[1]);
1654                                                         layer->texturename = (char **) Mem_Alloc (q3shaders_mem, sizeof (char*) * layer->numframes);
1655                                                         for (i = 0;i < layer->numframes;i++)
1656                                                                 layer->texturename[i] = Mem_strdup (q3shaders_mem, parameter[i + 2]);
1657                                                 }
1658                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "rgbgen"))
1659                                                 {
1660                                                         int i;
1661                                                         for (i = 0;i < numparameters - 2 && i < Q3RGBGEN_MAXPARMS;i++)
1662                                                                 layer->rgbgen.parms[i] = atof(parameter[i+2]);
1663                                                              if (!strcasecmp(parameter[1], "identity"))         layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITY;
1664                                                         else if (!strcasecmp(parameter[1], "const"))            layer->rgbgen.rgbgen = Q3RGBGEN_CONST;
1665                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->rgbgen.rgbgen = Q3RGBGEN_ENTITY;
1666                                                         else if (!strcasecmp(parameter[1], "exactvertex"))      layer->rgbgen.rgbgen = Q3RGBGEN_EXACTVERTEX;
1667                                                         else if (!strcasecmp(parameter[1], "identitylighting")) layer->rgbgen.rgbgen = Q3RGBGEN_IDENTITYLIGHTING;
1668                                                         else if (!strcasecmp(parameter[1], "lightingdiffuse"))  layer->rgbgen.rgbgen = Q3RGBGEN_LIGHTINGDIFFUSE;
1669                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSENTITY;
1670                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->rgbgen.rgbgen = Q3RGBGEN_ONEMINUSVERTEX;
1671                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->rgbgen.rgbgen = Q3RGBGEN_VERTEX;
1672                                                         else if (!strcasecmp(parameter[1], "wave"))
1673                                                         {
1674                                                                 layer->rgbgen.rgbgen = Q3RGBGEN_WAVE;
1675                                                                 layer->rgbgen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1676                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1677                                                                         layer->rgbgen.waveparms[i] = atof(parameter[i+3]);
1678                                                         }
1679                                                         else Con_DPrintf("%s parsing warning: unknown rgbgen %s\n", search->filenames[fileindex], parameter[1]);
1680                                                 }
1681                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "alphagen"))
1682                                                 {
1683                                                         int i;
1684                                                         for (i = 0;i < numparameters - 2 && i < Q3ALPHAGEN_MAXPARMS;i++)
1685                                                                 layer->alphagen.parms[i] = atof(parameter[i+2]);
1686                                                              if (!strcasecmp(parameter[1], "identity"))         layer->alphagen.alphagen = Q3ALPHAGEN_IDENTITY;
1687                                                         else if (!strcasecmp(parameter[1], "const"))            layer->alphagen.alphagen = Q3ALPHAGEN_CONST;
1688                                                         else if (!strcasecmp(parameter[1], "entity"))           layer->alphagen.alphagen = Q3ALPHAGEN_ENTITY;
1689                                                         else if (!strcasecmp(parameter[1], "lightingspecular")) layer->alphagen.alphagen = Q3ALPHAGEN_LIGHTINGSPECULAR;
1690                                                         else if (!strcasecmp(parameter[1], "oneminusentity"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSENTITY;
1691                                                         else if (!strcasecmp(parameter[1], "oneminusvertex"))   layer->alphagen.alphagen = Q3ALPHAGEN_ONEMINUSVERTEX;
1692                                                         else if (!strcasecmp(parameter[1], "portal"))           layer->alphagen.alphagen = Q3ALPHAGEN_PORTAL;
1693                                                         else if (!strcasecmp(parameter[1], "vertex"))           layer->alphagen.alphagen = Q3ALPHAGEN_VERTEX;
1694                                                         else if (!strcasecmp(parameter[1], "wave"))
1695                                                         {
1696                                                                 layer->alphagen.alphagen = Q3ALPHAGEN_WAVE;
1697                                                                 layer->alphagen.wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1698                                                                 for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1699                                                                         layer->alphagen.waveparms[i] = atof(parameter[i+3]);
1700                                                         }
1701                                                         else Con_DPrintf("%s parsing warning: unknown alphagen %s\n", search->filenames[fileindex], parameter[1]);
1702                                                 }
1703                                                 else if (numparameters >= 2 && (!strcasecmp(parameter[0], "texgen") || !strcasecmp(parameter[0], "tcgen")))
1704                                                 {
1705                                                         int i;
1706                                                         // observed values: tcgen environment
1707                                                         // no other values have been observed in real shaders
1708                                                         for (i = 0;i < numparameters - 2 && i < Q3TCGEN_MAXPARMS;i++)
1709                                                                 layer->tcgen.parms[i] = atof(parameter[i+2]);
1710                                                              if (!strcasecmp(parameter[1], "base"))        layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1711                                                         else if (!strcasecmp(parameter[1], "texture"))     layer->tcgen.tcgen = Q3TCGEN_TEXTURE;
1712                                                         else if (!strcasecmp(parameter[1], "environment")) layer->tcgen.tcgen = Q3TCGEN_ENVIRONMENT;
1713                                                         else if (!strcasecmp(parameter[1], "lightmap"))    layer->tcgen.tcgen = Q3TCGEN_LIGHTMAP;
1714                                                         else if (!strcasecmp(parameter[1], "vector"))      layer->tcgen.tcgen = Q3TCGEN_VECTOR;
1715                                                         else Con_DPrintf("%s parsing warning: unknown tcgen mode %s\n", search->filenames[fileindex], parameter[1]);
1716                                                 }
1717                                                 else if (numparameters >= 2 && !strcasecmp(parameter[0], "tcmod"))
1718                                                 {
1719                                                         int i, tcmodindex;
1720                                                         // observed values:
1721                                                         // tcmod rotate #
1722                                                         // tcmod scale # #
1723                                                         // tcmod scroll # #
1724                                                         // tcmod stretch sin # # # #
1725                                                         // tcmod stretch triangle # # # #
1726                                                         // tcmod transform # # # # # #
1727                                                         // tcmod turb # # # #
1728                                                         // tcmod turb sin # # # #  (this is bogus)
1729                                                         // no other values have been observed in real shaders
1730                                                         for (tcmodindex = 0;tcmodindex < Q3MAXTCMODS;tcmodindex++)
1731                                                                 if (!layer->tcmods[tcmodindex].tcmod)
1732                                                                         break;
1733                                                         if (tcmodindex < Q3MAXTCMODS)
1734                                                         {
1735                                                                 for (i = 0;i < numparameters - 2 && i < Q3TCMOD_MAXPARMS;i++)
1736                                                                         layer->tcmods[tcmodindex].parms[i] = atof(parameter[i+2]);
1737                                                                          if (!strcasecmp(parameter[1], "entitytranslate")) layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ENTITYTRANSLATE;
1738                                                                 else if (!strcasecmp(parameter[1], "rotate"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_ROTATE;
1739                                                                 else if (!strcasecmp(parameter[1], "scale"))           layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCALE;
1740                                                                 else if (!strcasecmp(parameter[1], "scroll"))          layer->tcmods[tcmodindex].tcmod = Q3TCMOD_SCROLL;
1741                                                                 else if (!strcasecmp(parameter[1], "page"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_PAGE;
1742                                                                 else if (!strcasecmp(parameter[1], "stretch"))
1743                                                                 {
1744                                                                         layer->tcmods[tcmodindex].tcmod = Q3TCMOD_STRETCH;
1745                                                                         layer->tcmods[tcmodindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[2]);
1746                                                                         for (i = 0;i < numparameters - 3 && i < Q3WAVEPARMS;i++)
1747                                                                                 layer->tcmods[tcmodindex].waveparms[i] = atof(parameter[i+3]);
1748                                                                 }
1749                                                                 else if (!strcasecmp(parameter[1], "transform"))       layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TRANSFORM;
1750                                                                 else if (!strcasecmp(parameter[1], "turb"))            layer->tcmods[tcmodindex].tcmod = Q3TCMOD_TURBULENT;
1751                                                                 else Con_DPrintf("%s parsing warning: unknown tcmod mode %s\n", search->filenames[fileindex], parameter[1]);
1752                                                         }
1753                                                         else
1754                                                                 Con_DPrintf("%s parsing warning: too many tcmods on one layer\n", search->filenames[fileindex]);
1755                                                 }
1756                                                 // break out a level if it was a closing brace (not using the character here to not confuse vim)
1757                                                 if (!strcasecmp(com_token, "}"))
1758                                                         break;
1759                                         }
1760                                         if (layer->rgbgen.rgbgen == Q3RGBGEN_LIGHTINGDIFFUSE || layer->rgbgen.rgbgen == Q3RGBGEN_VERTEX)
1761                                                 shader.lighting = true;
1762                                         if (layer->alphagen.alphagen == Q3ALPHAGEN_VERTEX)
1763                                         {
1764                                                 if (layer == shader.layers + 0)
1765                                                 {
1766                                                         // vertex controlled transparency
1767                                                         shader.vertexalpha = true;
1768                                                 }
1769                                                 else
1770                                                 {
1771                                                         // multilayer terrain shader or similar
1772                                                         shader.textureblendalpha = true;
1773                                                 }
1774                                         }
1775                                         layer->texflags = TEXF_ALPHA | TEXF_PRECACHE;
1776                                         if (!(shader.surfaceparms & Q3SURFACEPARM_NOMIPMAPS))
1777                                                 layer->texflags |= TEXF_MIPMAP;
1778                                         if (!(shader.textureflags & Q3TEXTUREFLAG_NOPICMIP))
1779                                                 layer->texflags |= TEXF_PICMIP | TEXF_COMPRESS;
1780                                         if (layer->clampmap)
1781                                                 layer->texflags |= TEXF_CLAMP;
1782                                         continue;
1783                                 }
1784                                 numparameters = 0;
1785                                 for (j = 0;strcasecmp(com_token, "\n") && strcasecmp(com_token, "}");j++)
1786                                 {
1787                                         if (j < TEXTURE_MAXFRAMES + 4)
1788                                         {
1789                                                 strlcpy(parameter[j], com_token, sizeof(parameter[j]));
1790                                                 numparameters = j + 1;
1791                                         }
1792                                         if (!COM_ParseToken_QuakeC(&text, true))
1793                                                 break;
1794                                 }
1795                                 //for (j = numparameters;j < TEXTURE_MAXFRAMES + 4;j++)
1796                                 //      parameter[j][0] = 0;
1797                                 if (fileindex == 0 && !strcasecmp(com_token, "}"))
1798                                         break;
1799                                 if (developer.integer >= 100)
1800                                 {
1801                                         Con_Printf("%s: ", shader.name);
1802                                         for (j = 0;j < numparameters;j++)
1803                                                 Con_Printf(" %s", parameter[j]);
1804                                         Con_Print("\n");
1805                                 }
1806                                 if (numparameters < 1)
1807                                         continue;
1808                                 if (!strcasecmp(parameter[0], "surfaceparm") && numparameters >= 2)
1809                                 {
1810                                         if (!strcasecmp(parameter[1], "alphashadow"))
1811                                                 shader.surfaceparms |= Q3SURFACEPARM_ALPHASHADOW;
1812                                         else if (!strcasecmp(parameter[1], "areaportal"))
1813                                                 shader.surfaceparms |= Q3SURFACEPARM_AREAPORTAL;
1814                                         else if (!strcasecmp(parameter[1], "botclip"))
1815                                                 shader.surfaceparms |= Q3SURFACEPARM_BOTCLIP;
1816                                         else if (!strcasecmp(parameter[1], "clusterportal"))
1817                                                 shader.surfaceparms |= Q3SURFACEPARM_CLUSTERPORTAL;
1818                                         else if (!strcasecmp(parameter[1], "detail"))
1819                                                 shader.surfaceparms |= Q3SURFACEPARM_DETAIL;
1820                                         else if (!strcasecmp(parameter[1], "donotenter"))
1821                                                 shader.surfaceparms |= Q3SURFACEPARM_DONOTENTER;
1822                                         else if (!strcasecmp(parameter[1], "dust"))
1823                                                 shader.surfaceparms |= Q3SURFACEPARM_DUST;
1824                                         else if (!strcasecmp(parameter[1], "hint"))
1825                                                 shader.surfaceparms |= Q3SURFACEPARM_HINT;
1826                                         else if (!strcasecmp(parameter[1], "fog"))
1827                                                 shader.surfaceparms |= Q3SURFACEPARM_FOG;
1828                                         else if (!strcasecmp(parameter[1], "lava"))
1829                                                 shader.surfaceparms |= Q3SURFACEPARM_LAVA;
1830                                         else if (!strcasecmp(parameter[1], "lightfilter"))
1831                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTFILTER;
1832                                         else if (!strcasecmp(parameter[1], "lightgrid"))
1833                                                 shader.surfaceparms |= Q3SURFACEPARM_LIGHTGRID;
1834                                         else if (!strcasecmp(parameter[1], "metalsteps"))
1835                                                 shader.surfaceparms |= Q3SURFACEPARM_METALSTEPS;
1836                                         else if (!strcasecmp(parameter[1], "nodamage"))
1837                                                 shader.surfaceparms |= Q3SURFACEPARM_NODAMAGE;
1838                                         else if (!strcasecmp(parameter[1], "nodlight"))
1839                                                 shader.surfaceparms |= Q3SURFACEPARM_NODLIGHT;
1840                                         else if (!strcasecmp(parameter[1], "nodraw"))
1841                                                 shader.surfaceparms |= Q3SURFACEPARM_NODRAW;
1842                                         else if (!strcasecmp(parameter[1], "nodrop"))
1843                                                 shader.surfaceparms |= Q3SURFACEPARM_NODROP;
1844                                         else if (!strcasecmp(parameter[1], "noimpact"))
1845                                                 shader.surfaceparms |= Q3SURFACEPARM_NOIMPACT;
1846                                         else if (!strcasecmp(parameter[1], "nolightmap"))
1847                                                 shader.surfaceparms |= Q3SURFACEPARM_NOLIGHTMAP;
1848                                         else if (!strcasecmp(parameter[1], "nomarks"))
1849                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMARKS;
1850                                         else if (!strcasecmp(parameter[1], "nomipmaps"))
1851                                                 shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
1852                                         else if (!strcasecmp(parameter[1], "nonsolid"))
1853                                                 shader.surfaceparms |= Q3SURFACEPARM_NONSOLID;
1854                                         else if (!strcasecmp(parameter[1], "origin"))
1855                                                 shader.surfaceparms |= Q3SURFACEPARM_ORIGIN;
1856                                         else if (!strcasecmp(parameter[1], "playerclip"))
1857                                                 shader.surfaceparms |= Q3SURFACEPARM_PLAYERCLIP;
1858                                         else if (!strcasecmp(parameter[1], "sky"))
1859                                                 shader.surfaceparms |= Q3SURFACEPARM_SKY;
1860                                         else if (!strcasecmp(parameter[1], "slick"))
1861                                                 shader.surfaceparms |= Q3SURFACEPARM_SLICK;
1862                                         else if (!strcasecmp(parameter[1], "slime"))
1863                                                 shader.surfaceparms |= Q3SURFACEPARM_SLIME;
1864                                         else if (!strcasecmp(parameter[1], "structural"))
1865                                                 shader.surfaceparms |= Q3SURFACEPARM_STRUCTURAL;
1866                                         else if (!strcasecmp(parameter[1], "trans"))
1867                                                 shader.surfaceparms |= Q3SURFACEPARM_TRANS;
1868                                         else if (!strcasecmp(parameter[1], "water"))
1869                                                 shader.surfaceparms |= Q3SURFACEPARM_WATER;
1870                                         else if (!strcasecmp(parameter[1], "pointlight"))
1871                                                 shader.surfaceparms |= Q3SURFACEPARM_POINTLIGHT;
1872                                         else if (!strcasecmp(parameter[1], "antiportal"))
1873                                                 shader.surfaceparms |= Q3SURFACEPARM_ANTIPORTAL;
1874                                         else
1875                                                 Con_DPrintf("%s parsing warning: unknown surfaceparm \"%s\"\n", search->filenames[fileindex], parameter[1]);
1876                                 }
1877                                 else if (!strcasecmp(parameter[0], "dpshadow"))
1878                                         shader.dpshadow = true;
1879                                 else if (!strcasecmp(parameter[0], "dpnoshadow"))
1880                                         shader.dpnoshadow = true;
1881                                 else if (!strcasecmp(parameter[0], "sky") && numparameters >= 2)
1882                                 {
1883                                         // some q3 skies don't have the sky parm set
1884                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
1885                                         strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
1886                                 }
1887                                 else if (!strcasecmp(parameter[0], "skyparms") && numparameters >= 2)
1888                                 {
1889                                         // some q3 skies don't have the sky parm set
1890                                         shader.surfaceparms |= Q3SURFACEPARM_SKY;
1891                                         if (!atoi(parameter[1]) && strcasecmp(parameter[1], "-"))
1892                                                 strlcpy(shader.skyboxname, parameter[1], sizeof(shader.skyboxname));
1893                                 }
1894                                 else if (!strcasecmp(parameter[0], "cull") && numparameters >= 2)
1895                                 {
1896                                         if (!strcasecmp(parameter[1], "disable") || !strcasecmp(parameter[1], "none") || !strcasecmp(parameter[1], "twosided"))
1897                                                 shader.textureflags |= Q3TEXTUREFLAG_TWOSIDED;
1898                                 }
1899                                 else if (!strcasecmp(parameter[0], "nomipmaps"))
1900                                         shader.surfaceparms |= Q3SURFACEPARM_NOMIPMAPS;
1901                                 else if (!strcasecmp(parameter[0], "nopicmip"))
1902                                         shader.textureflags |= Q3TEXTUREFLAG_NOPICMIP;
1903                                 else if (!strcasecmp(parameter[0], "polygonoffset"))
1904                                         shader.textureflags |= Q3TEXTUREFLAG_POLYGONOFFSET;
1905                                 else if (!strcasecmp(parameter[0], "dp_refract") && numparameters >= 5)
1906                                 {
1907                                         shader.textureflags |= Q3TEXTUREFLAG_REFRACTION;
1908                                         shader.refractfactor = atof(parameter[1]);
1909                                         Vector4Set(shader.refractcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), 1);
1910                                 }
1911                                 else if (!strcasecmp(parameter[0], "dp_reflect") && numparameters >= 6)
1912                                 {
1913                                         shader.textureflags |= Q3TEXTUREFLAG_REFLECTION;
1914                                         shader.reflectfactor = atof(parameter[1]);
1915                                         Vector4Set(shader.reflectcolor4f, atof(parameter[2]), atof(parameter[3]), atof(parameter[4]), atof(parameter[5]));
1916                                 }
1917                                 else if (!strcasecmp(parameter[0], "dp_water") && numparameters >= 12)
1918                                 {
1919                                         shader.textureflags |= Q3TEXTUREFLAG_WATERSHADER;
1920                                         shader.reflectmin = atof(parameter[1]);
1921                                         shader.reflectmax = atof(parameter[2]);
1922                                         shader.refractfactor = atof(parameter[3]);
1923                                         shader.reflectfactor = atof(parameter[4]);
1924                                         Vector4Set(shader.refractcolor4f, atof(parameter[5]), atof(parameter[6]), atof(parameter[7]), 1);
1925                                         Vector4Set(shader.reflectcolor4f, atof(parameter[8]), atof(parameter[9]), atof(parameter[10]), 1);
1926                                         shader.r_water_wateralpha = atof(parameter[11]);
1927                                 }
1928                                 else if (!strcasecmp(parameter[0], "dp_glossintensitymod") && numparameters >= 2)
1929                                 {
1930                                         shader.specularscalemod = atof(parameter[1]);
1931                                 }
1932                                 else if (!strcasecmp(parameter[0], "dp_glossexponentmod") && numparameters >= 2)
1933                                 {
1934                                         shader.specularpowermod = atof(parameter[1]);
1935                                 }
1936                                 else if (!strcasecmp(parameter[0], "deformvertexes") && numparameters >= 2)
1937                                 {
1938                                         int i, deformindex;
1939                                         for (deformindex = 0;deformindex < Q3MAXDEFORMS;deformindex++)
1940                                                 if (!shader.deforms[deformindex].deform)
1941                                                         break;
1942                                         if (deformindex < Q3MAXDEFORMS)
1943                                         {
1944                                                 for (i = 0;i < numparameters - 2 && i < Q3DEFORM_MAXPARMS;i++)
1945                                                         shader.deforms[deformindex].parms[i] = atof(parameter[i+2]);
1946                                                      if (!strcasecmp(parameter[1], "projectionshadow")) shader.deforms[deformindex].deform = Q3DEFORM_PROJECTIONSHADOW;
1947                                                 else if (!strcasecmp(parameter[1], "autosprite"      )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE;
1948                                                 else if (!strcasecmp(parameter[1], "autosprite2"     )) shader.deforms[deformindex].deform = Q3DEFORM_AUTOSPRITE2;
1949                                                 else if (!strcasecmp(parameter[1], "text0"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT0;
1950                                                 else if (!strcasecmp(parameter[1], "text1"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT1;
1951                                                 else if (!strcasecmp(parameter[1], "text2"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT2;
1952                                                 else if (!strcasecmp(parameter[1], "text3"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT3;
1953                                                 else if (!strcasecmp(parameter[1], "text4"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT4;
1954                                                 else if (!strcasecmp(parameter[1], "text5"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT5;
1955                                                 else if (!strcasecmp(parameter[1], "text6"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT6;
1956                                                 else if (!strcasecmp(parameter[1], "text7"           )) shader.deforms[deformindex].deform = Q3DEFORM_TEXT7;
1957                                                 else if (!strcasecmp(parameter[1], "bulge"           )) shader.deforms[deformindex].deform = Q3DEFORM_BULGE;
1958                                                 else if (!strcasecmp(parameter[1], "normal"          )) shader.deforms[deformindex].deform = Q3DEFORM_NORMAL;
1959                                                 else if (!strcasecmp(parameter[1], "wave"            ))
1960                                                 {
1961                                                         shader.deforms[deformindex].deform = Q3DEFORM_WAVE;
1962                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[3]);
1963                                                         for (i = 0;i < numparameters - 4 && i < Q3WAVEPARMS;i++)
1964                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+4]);
1965                                                 }
1966                                                 else if (!strcasecmp(parameter[1], "move"            ))
1967                                                 {
1968                                                         shader.deforms[deformindex].deform = Q3DEFORM_MOVE;
1969                                                         shader.deforms[deformindex].wavefunc = Mod_LoadQ3Shaders_EnumerateWaveFunc(parameter[5]);
1970                                                         for (i = 0;i < numparameters - 6 && i < Q3WAVEPARMS;i++)
1971                                                                 shader.deforms[deformindex].waveparms[i] = atof(parameter[i+6]);
1972                                                 }
1973                                         }
1974                                 }
1975                         }
1976                         // pick the primary layer to render with
1977                         if (shader.numlayers)
1978                         {
1979                                 shader.backgroundlayer = -1;
1980                                 shader.primarylayer = 0;
1981                                 // if lightmap comes first this is definitely an ordinary texture
1982                                 // if the first two layers have the correct blendfuncs and use vertex alpha, it is a blended terrain shader
1983                                 if ((shader.layers[shader.primarylayer].texturename != NULL)
1984                                   && !strcasecmp(shader.layers[shader.primarylayer].texturename[0], "$lightmap"))
1985                                 {
1986                                         shader.backgroundlayer = -1;
1987                                         shader.primarylayer = 1;
1988                                 }
1989                                 else if (shader.numlayers >= 2
1990                                 &&   shader.layers[1].alphagen.alphagen == Q3ALPHAGEN_VERTEX
1991                                 &&  (shader.layers[0].blendfunc[0] == GL_ONE       && shader.layers[0].blendfunc[1] == GL_ZERO                && !shader.layers[0].alphatest)
1992                                 && ((shader.layers[1].blendfunc[0] == GL_SRC_ALPHA && shader.layers[1].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
1993                                 ||  (shader.layers[1].blendfunc[0] == GL_ONE       && shader.layers[1].blendfunc[1] == GL_ZERO                &&  shader.layers[1].alphatest)))
1994                                 {
1995                                         // terrain blending or other effects
1996                                         shader.backgroundlayer = 0;
1997                                         shader.primarylayer = 1;
1998                                 }
1999                         }
2000                         // fix up multiple reflection types
2001                         if(shader.textureflags & Q3TEXTUREFLAG_WATERSHADER)
2002                                 shader.textureflags &= ~(Q3TEXTUREFLAG_REFRACTION | Q3TEXTUREFLAG_REFLECTION);
2003
2004                         Q3Shader_AddToHash (&shader);
2005                 }
2006                 Mem_Free(f);
2007         }
2008         FS_FreeSearch(search);
2009 }
2010
2011 q3shaderinfo_t *Mod_LookupQ3Shader(const char *name)
2012 {
2013         unsigned short hash;
2014         q3shader_hash_entry_t* entry;
2015         if (!q3shaders_mem)
2016                 Mod_LoadQ3Shaders();
2017         hash = CRC_Block_CaseInsensitive ((const unsigned char *)name, strlen (name));
2018         entry = q3shader_data->hash + (hash % Q3SHADER_HASH_SIZE);
2019         while (entry != NULL)
2020         {
2021                 if (strcasecmp (entry->shader.name, name) == 0)
2022                         return &entry->shader;
2023                 entry = entry->chain;
2024         }
2025         return NULL;
2026 }
2027
2028 qboolean Mod_LoadTextureFromQ3Shader(texture_t *texture, const char *name, qboolean warnmissing, qboolean fallback, int defaulttexflags)
2029 {
2030         int j;
2031         int texflagsmask;
2032         qboolean success = true;
2033         q3shaderinfo_t *shader;
2034         if (!name)
2035                 name = "";
2036         strlcpy(texture->name, name, sizeof(texture->name));
2037         shader = name[0] ? Mod_LookupQ3Shader(name) : NULL;
2038
2039         texflagsmask = ~0;
2040         if(!(defaulttexflags & TEXF_PICMIP))
2041                 texflagsmask &= ~TEXF_PICMIP;
2042         if(!(defaulttexflags & TEXF_COMPRESS))
2043                 texflagsmask &= ~TEXF_COMPRESS;
2044         texture->specularscalemod = 1; // unless later loaded from the shader
2045         texture->specularpowermod = 1; // unless later loaded from the shader
2046
2047         if (shader)
2048         {
2049                 if (developer_loading.integer)
2050                         Con_Printf("%s: loaded shader for %s\n", loadmodel->name, name);
2051                 texture->surfaceparms = shader->surfaceparms;
2052
2053                 // allow disabling of picmip or compression by defaulttexflags
2054                 texture->textureflags = shader->textureflags & texflagsmask;
2055
2056                 if (shader->surfaceparms & Q3SURFACEPARM_SKY)
2057                 {
2058                         texture->basematerialflags = MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2059                         if (shader->skyboxname[0])
2060                         {
2061                                 // quake3 seems to append a _ to the skybox name, so this must do so as well
2062                                 dpsnprintf(loadmodel->brush.skybox, sizeof(loadmodel->brush.skybox), "%s_", shader->skyboxname);
2063                         }
2064                 }
2065                 else if ((texture->surfaceflags & Q3SURFACEFLAG_NODRAW) || shader->numlayers == 0)
2066                         texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2067                 else
2068                         texture->basematerialflags = MATERIALFLAG_WALL;
2069
2070                 if (shader->layers[0].alphatest)
2071                         texture->basematerialflags |= MATERIALFLAG_ALPHATEST | MATERIALFLAG_NOSHADOW;
2072                 if (shader->textureflags & Q3TEXTUREFLAG_TWOSIDED)
2073                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW | MATERIALFLAG_NOCULLFACE;
2074                 if (shader->textureflags & Q3TEXTUREFLAG_POLYGONOFFSET)
2075                         texture->biaspolygonoffset -= 2;
2076                 if (shader->textureflags & Q3TEXTUREFLAG_REFRACTION)
2077                         texture->basematerialflags |= MATERIALFLAG_REFRACTION;
2078                 if (shader->textureflags & Q3TEXTUREFLAG_REFLECTION)
2079                         texture->basematerialflags |= MATERIALFLAG_REFLECTION;
2080                 if (shader->textureflags & Q3TEXTUREFLAG_WATERSHADER)
2081                         texture->basematerialflags |= MATERIALFLAG_WATERSHADER;
2082                 texture->customblendfunc[0] = GL_ONE;
2083                 texture->customblendfunc[1] = GL_ZERO;
2084                 if (shader->numlayers > 0)
2085                 {
2086                         texture->customblendfunc[0] = shader->layers[0].blendfunc[0];
2087                         texture->customblendfunc[1] = shader->layers[0].blendfunc[1];
2088 /*
2089 Q3 shader blendfuncs actually used in the game (* = supported by DP)
2090 * additive               GL_ONE GL_ONE
2091 additive weird         GL_ONE GL_SRC_ALPHA
2092 additive weird 2       GL_ONE GL_ONE_MINUS_SRC_ALPHA
2093 * alpha                  GL_SRC_ALPHA GL_ONE_MINUS_SRC_ALPHA
2094 alpha inverse          GL_ONE_MINUS_SRC_ALPHA GL_SRC_ALPHA
2095 brighten               GL_DST_COLOR GL_ONE
2096 brighten               GL_ONE GL_SRC_COLOR
2097 brighten weird         GL_DST_COLOR GL_ONE_MINUS_DST_ALPHA
2098 brighten weird 2       GL_DST_COLOR GL_SRC_ALPHA
2099 * modulate               GL_DST_COLOR GL_ZERO
2100 * modulate               GL_ZERO GL_SRC_COLOR
2101 modulate inverse       GL_ZERO GL_ONE_MINUS_SRC_COLOR
2102 modulate inverse alpha GL_ZERO GL_SRC_ALPHA
2103 modulate weird inverse GL_ONE_MINUS_DST_COLOR GL_ZERO
2104 * modulate x2            GL_DST_COLOR GL_SRC_COLOR
2105 * no blend               GL_ONE GL_ZERO
2106 nothing                GL_ZERO GL_ONE
2107 */
2108                         // if not opaque, figure out what blendfunc to use
2109                         if (shader->layers[0].blendfunc[0] != GL_ONE || shader->layers[0].blendfunc[1] != GL_ZERO)
2110                         {
2111                                 if (shader->layers[0].blendfunc[0] == GL_ONE && shader->layers[0].blendfunc[1] == GL_ONE)
2112                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2113                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE)
2114                                         texture->basematerialflags |= MATERIALFLAG_ADD | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2115                                 else if (shader->layers[0].blendfunc[0] == GL_SRC_ALPHA && shader->layers[0].blendfunc[1] == GL_ONE_MINUS_SRC_ALPHA)
2116                                         texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2117                                 else
2118                                         texture->basematerialflags |= MATERIALFLAG_CUSTOMBLEND | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2119                         }
2120                 }
2121                 if (!shader->lighting)
2122                         texture->basematerialflags |= MATERIALFLAG_FULLBRIGHT;
2123                 if (shader->primarylayer >= 0)
2124                 {
2125                         q3shaderinfo_layer_t* primarylayer = shader->layers + shader->primarylayer;
2126                         // copy over many primarylayer parameters
2127                         texture->rgbgen = primarylayer->rgbgen;
2128                         texture->alphagen = primarylayer->alphagen;
2129                         texture->tcgen = primarylayer->tcgen;
2130                         memcpy(texture->tcmods, primarylayer->tcmods, sizeof(texture->tcmods));
2131                         // load the textures
2132                         texture->numskinframes = primarylayer->numframes;
2133                         texture->skinframerate = primarylayer->framerate;
2134                         for (j = 0;j < primarylayer->numframes;j++)
2135                         {
2136                                 if(cls.state == ca_dedicated)
2137                                 {
2138                                         texture->skinframes[j] = NULL;
2139                                 }
2140                                 else if (!(texture->skinframes[j] = R_SkinFrame_LoadExternal(primarylayer->texturename[j], primarylayer->texflags & texflagsmask, false)))
2141                                 {
2142                                         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);
2143                                         texture->skinframes[j] = R_SkinFrame_LoadMissing();
2144                                 }
2145                         }
2146                 }
2147                 if (shader->backgroundlayer >= 0)
2148                 {
2149                         q3shaderinfo_layer_t* backgroundlayer = shader->layers + shader->backgroundlayer;
2150                         // copy over one secondarylayer parameter
2151                         memcpy(texture->backgroundtcmods, backgroundlayer->tcmods, sizeof(texture->backgroundtcmods));
2152                         // load the textures
2153                         texture->backgroundnumskinframes = backgroundlayer->numframes;
2154                         texture->backgroundskinframerate = backgroundlayer->framerate;
2155                         for (j = 0;j < backgroundlayer->numframes;j++)
2156                         {
2157                                 if(cls.state == ca_dedicated)
2158                                 {
2159                                         texture->skinframes[j] = NULL;
2160                                 }
2161                                 else if (!(texture->backgroundskinframes[j] = R_SkinFrame_LoadExternal(backgroundlayer->texturename[j], backgroundlayer->texflags & texflagsmask, false)))
2162                                 {
2163                                         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);
2164                                         texture->backgroundskinframes[j] = R_SkinFrame_LoadMissing();
2165                                 }
2166                         }
2167                 }
2168                 if (shader->dpshadow)
2169                         texture->basematerialflags &= ~MATERIALFLAG_NOSHADOW;
2170                 if (shader->dpnoshadow)
2171                         texture->basematerialflags |= MATERIALFLAG_NOSHADOW;
2172                 memcpy(texture->deforms, shader->deforms, sizeof(texture->deforms));
2173                 texture->reflectmin = shader->reflectmin;
2174                 texture->reflectmax = shader->reflectmax;
2175                 texture->refractfactor = shader->refractfactor;
2176                 Vector4Copy(shader->refractcolor4f, texture->refractcolor4f);
2177                 texture->reflectfactor = shader->reflectfactor;
2178                 Vector4Copy(shader->reflectcolor4f, texture->reflectcolor4f);
2179                 texture->r_water_wateralpha = shader->r_water_wateralpha;
2180                 texture->specularscalemod = shader->specularscalemod;
2181                 texture->specularpowermod = shader->specularpowermod;
2182         }
2183         else if (!strcmp(texture->name, "noshader") || !texture->name[0])
2184         {
2185                 if (developer.integer >= 100)
2186                         Con_Printf("^1%s:^7 using fallback noshader material for ^3\"%s\"\n", loadmodel->name, name);
2187                 texture->surfaceparms = 0;
2188         }
2189         else if (!strcmp(texture->name, "common/nodraw") || !strcmp(texture->name, "textures/common/nodraw"))
2190         {
2191                 if (developer.integer >= 100)
2192                         Con_Printf("^1%s:^7 using fallback nodraw material for ^3\"%s\"\n", loadmodel->name, name);
2193                 texture->surfaceparms = 0;
2194                 texture->basematerialflags = MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2195         }
2196         else
2197         {
2198                 if (developer.integer >= 100)
2199                         Con_Printf("^1%s:^7 No shader found for texture ^3\"%s\"\n", loadmodel->name, texture->name);
2200                 texture->surfaceparms = 0;
2201                 if (texture->surfaceflags & Q3SURFACEFLAG_NODRAW)
2202                         texture->basematerialflags |= MATERIALFLAG_NODRAW | MATERIALFLAG_NOSHADOW;
2203                 else if (texture->surfaceflags & Q3SURFACEFLAG_SKY)
2204                         texture->basematerialflags |= MATERIALFLAG_SKY | MATERIALFLAG_NOSHADOW;
2205                 else
2206                         texture->basematerialflags |= MATERIALFLAG_WALL;
2207                 texture->numskinframes = 1;
2208                 if(cls.state == ca_dedicated)
2209                 {
2210                         texture->skinframes[0] = NULL;
2211                 }
2212                 else
2213                 {
2214                         if (fallback)
2215                         {
2216                                 qboolean has_alpha;
2217                                 if ((texture->skinframes[0] = R_SkinFrame_LoadExternal_CheckAlpha(texture->name, defaulttexflags, false, &has_alpha)))
2218                                 {
2219                                         if(has_alpha && (defaulttexflags & TEXF_ALPHA))
2220                                                 texture->basematerialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_BLENDED | MATERIALFLAG_NOSHADOW;
2221                                 }
2222                                 else
2223                                         success = false;
2224                         }
2225                         else
2226                                 success = false;
2227                         if (!success && warnmissing)
2228                                 Con_Printf("^1%s:^7 could not load texture ^3\"%s\"\n", loadmodel->name, texture->name);
2229                 }
2230         }
2231         // init the animation variables
2232         texture->currentframe = texture;
2233         if (texture->numskinframes < 1)
2234                 texture->numskinframes = 1;
2235         if (!texture->skinframes[0])
2236                 texture->skinframes[0] = R_SkinFrame_LoadMissing();
2237         texture->currentskinframe = texture->skinframes[0];
2238         texture->backgroundcurrentskinframe = texture->backgroundskinframes[0];
2239         return success;
2240 }
2241
2242 skinfile_t *Mod_LoadSkinFiles(void)
2243 {
2244         int i, words, line, wordsoverflow;
2245         char *text;
2246         const char *data;
2247         skinfile_t *skinfile = NULL, *first = NULL;
2248         skinfileitem_t *skinfileitem;
2249         char word[10][MAX_QPATH];
2250
2251 /*
2252 sample file:
2253 U_bodyBox,models/players/Legoman/BikerA2.tga
2254 U_RArm,models/players/Legoman/BikerA1.tga
2255 U_LArm,models/players/Legoman/BikerA1.tga
2256 U_armor,common/nodraw
2257 U_sword,common/nodraw
2258 U_shield,common/nodraw
2259 U_homb,common/nodraw
2260 U_backpack,common/nodraw
2261 U_colcha,common/nodraw
2262 tag_head,
2263 tag_weapon,
2264 tag_torso,
2265 */
2266         memset(word, 0, sizeof(word));
2267         for (i = 0;i < MAX_SKINS && (data = text = (char *)FS_LoadFile(va("%s_%i.skin", loadmodel->name, i), tempmempool, true, NULL));i++)
2268         {
2269                 // If it's the first file we parse
2270                 if (skinfile == NULL)
2271                 {
2272                         skinfile = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2273                         first = skinfile;
2274                 }
2275                 else
2276                 {
2277                         skinfile->next = (skinfile_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfile_t));
2278                         skinfile = skinfile->next;
2279                 }
2280                 skinfile->next = NULL;
2281
2282                 for(line = 0;;line++)
2283                 {
2284                         // parse line
2285                         if (!COM_ParseToken_QuakeC(&data, true))
2286                                 break;
2287                         if (!strcmp(com_token, "\n"))
2288                                 continue;
2289                         words = 0;
2290                         wordsoverflow = false;
2291                         do
2292                         {
2293                                 if (words < 10)
2294                                         strlcpy(word[words++], com_token, sizeof (word[0]));
2295                                 else
2296                                         wordsoverflow = true;
2297                         }
2298                         while (COM_ParseToken_QuakeC(&data, true) && strcmp(com_token, "\n"));
2299                         if (wordsoverflow)
2300                         {
2301                                 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);
2302                                 continue;
2303                         }
2304                         // words is always >= 1
2305                         if (!strcmp(word[0], "replace"))
2306                         {
2307                                 if (words == 3)
2308                                 {
2309                                         if (developer_loading.integer)
2310                                                 Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[1], word[2]);
2311                                         skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2312                                         skinfileitem->next = skinfile->items;
2313                                         skinfile->items = skinfileitem;
2314                                         strlcpy (skinfileitem->name, word[1], sizeof (skinfileitem->name));
2315                                         strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2316                                 }
2317                                 else
2318                                         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]);
2319                         }
2320                         else if (words >= 2 && !strncmp(word[0], "tag_", 4))
2321                         {
2322                                 // tag name, like "tag_weapon,"
2323                                 // not used for anything (not even in Quake3)
2324                         }
2325                         else if (words >= 2 && !strcmp(word[1], ","))
2326                         {
2327                                 // mesh shader name, like "U_RArm,models/players/Legoman/BikerA1.tga"
2328                                 if (developer_loading.integer)
2329                                         Con_Printf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[0], word[2]);
2330                                 skinfileitem = (skinfileitem_t *)Mem_Alloc(loadmodel->mempool, sizeof(skinfileitem_t));
2331                                 skinfileitem->next = skinfile->items;
2332                                 skinfile->items = skinfileitem;
2333                                 strlcpy (skinfileitem->name, word[0], sizeof (skinfileitem->name));
2334                                 strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
2335                         }
2336                         else
2337                                 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);
2338                 }
2339                 Mem_Free(text);
2340         }
2341         if (i)
2342                 loadmodel->numskins = i;
2343         return first;
2344 }
2345
2346 void Mod_FreeSkinFiles(skinfile_t *skinfile)
2347 {
2348         skinfile_t *next;
2349         skinfileitem_t *skinfileitem, *nextitem;
2350         for (;skinfile;skinfile = next)
2351         {
2352                 next = skinfile->next;
2353                 for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = nextitem)
2354                 {
2355                         nextitem = skinfileitem->next;
2356                         Mem_Free(skinfileitem);
2357                 }
2358                 Mem_Free(skinfile);
2359         }
2360 }
2361
2362 int Mod_CountSkinFiles(skinfile_t *skinfile)
2363 {
2364         int i;
2365         for (i = 0;skinfile;skinfile = skinfile->next, i++);
2366         return i;
2367 }
2368
2369 void Mod_SnapVertices(int numcomponents, int numvertices, float *vertices, float snap)
2370 {
2371         int i;
2372         double isnap = 1.0 / snap;
2373         for (i = 0;i < numvertices*numcomponents;i++)
2374                 vertices[i] = floor(vertices[i]*isnap)*snap;
2375 }
2376
2377 int Mod_RemoveDegenerateTriangles(int numtriangles, const int *inelement3i, int *outelement3i, const float *vertex3f)
2378 {
2379         int i, outtriangles;
2380         float edgedir1[3], edgedir2[3], temp[3];
2381         // a degenerate triangle is one with no width (thickness, surface area)
2382         // these are characterized by having all 3 points colinear (along a line)
2383         // or having two points identical
2384         // the simplest check is to calculate the triangle's area
2385         for (i = 0, outtriangles = 0;i < numtriangles;i++, inelement3i += 3)
2386         {
2387                 // calculate first edge
2388                 VectorSubtract(vertex3f + inelement3i[1] * 3, vertex3f + inelement3i[0] * 3, edgedir1);
2389                 VectorSubtract(vertex3f + inelement3i[2] * 3, vertex3f + inelement3i[0] * 3, edgedir2);
2390                 CrossProduct(edgedir1, edgedir2, temp);
2391                 if (VectorLength2(temp) < 0.001f)
2392                         continue; // degenerate triangle (no area)
2393                 // valid triangle (has area)
2394                 VectorCopy(inelement3i, outelement3i);
2395                 outelement3i += 3;
2396                 outtriangles++;
2397         }
2398         return outtriangles;
2399 }
2400
2401 void Mod_VertexRangeFromElements(int numelements, const int *elements, int *firstvertexpointer, int *lastvertexpointer)
2402 {
2403         int i, e;
2404         int firstvertex, lastvertex;
2405         if (numelements > 0 && elements)
2406         {
2407                 firstvertex = lastvertex = elements[0];
2408                 for (i = 1;i < numelements;i++)
2409                 {
2410                         e = elements[i];
2411                         firstvertex = min(firstvertex, e);
2412                         lastvertex = max(lastvertex, e);
2413                 }
2414         }
2415         else
2416                 firstvertex = lastvertex = 0;
2417         if (firstvertexpointer)
2418                 *firstvertexpointer = firstvertex;
2419         if (lastvertexpointer)
2420                 *lastvertexpointer = lastvertex;
2421 }
2422
2423 void Mod_MakeSortedSurfaces(dp_model_t *mod)
2424 {
2425         // make an optimal set of texture-sorted batches to draw...
2426         int j, t;
2427         int *firstsurfacefortexture;
2428         int *numsurfacesfortexture;
2429         if (!mod->sortedmodelsurfaces)
2430                 mod->sortedmodelsurfaces = (int *) Mem_Alloc(loadmodel->mempool, mod->nummodelsurfaces * sizeof(*mod->sortedmodelsurfaces));
2431         firstsurfacefortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*firstsurfacefortexture));
2432         numsurfacesfortexture = (int *) Mem_Alloc(tempmempool, mod->num_textures * sizeof(*numsurfacesfortexture));
2433         memset(numsurfacesfortexture, 0, mod->num_textures * sizeof(*numsurfacesfortexture));
2434         for (j = 0;j < mod->nummodelsurfaces;j++)
2435         {
2436                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2437                 int t = (int)(surface->texture - mod->data_textures);
2438                 numsurfacesfortexture[t]++;
2439         }
2440         j = 0;
2441         for (t = 0;t < mod->num_textures;t++)
2442         {
2443                 firstsurfacefortexture[t] = j;
2444                 j += numsurfacesfortexture[t];
2445         }
2446         for (j = 0;j < mod->nummodelsurfaces;j++)
2447         {
2448                 const msurface_t *surface = mod->data_surfaces + j + mod->firstmodelsurface;
2449                 int t = (int)(surface->texture - mod->data_textures);
2450                 mod->sortedmodelsurfaces[firstsurfacefortexture[t]++] = j + mod->firstmodelsurface;
2451         }
2452         Mem_Free(firstsurfacefortexture);
2453         Mem_Free(numsurfacesfortexture);
2454 }
2455
2456 static void Mod_BuildVBOs(void)
2457 {
2458         if (developer.integer && loadmodel->surfmesh.data_element3s && loadmodel->surfmesh.data_element3i)
2459         {
2460                 int i;
2461                 for (i = 0;i < loadmodel->surfmesh.num_triangles*3;i++)
2462                 {
2463                         if (loadmodel->surfmesh.data_element3s[i] != loadmodel->surfmesh.data_element3i[i])
2464                         {
2465                                 Con_Printf("Mod_BuildVBOs: element %u is incorrect (%u should be %u)\n", i, loadmodel->surfmesh.data_element3s[i], loadmodel->surfmesh.data_element3i[i]);
2466                                 loadmodel->surfmesh.data_element3s[i] = loadmodel->surfmesh.data_element3i[i];
2467                         }
2468                 }
2469         }
2470
2471         if (!gl_support_arb_vertex_buffer_object)
2472                 return;
2473
2474         // element buffer is easy because it's just one array
2475         if (loadmodel->surfmesh.num_triangles)
2476         {
2477                 if (loadmodel->surfmesh.data_element3s)
2478                         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);
2479                 else
2480                         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);
2481         }
2482
2483         // vertex buffer is several arrays and we put them in the same buffer
2484         //
2485         // is this wise?  the texcoordtexture2f array is used with dynamic
2486         // vertex/svector/tvector/normal when rendering animated models, on the
2487         // other hand animated models don't use a lot of vertices anyway...
2488         if (loadmodel->surfmesh.num_vertices)
2489         {
2490                 size_t size;
2491                 unsigned char *mem;
2492                 size = 0;
2493                 loadmodel->surfmesh.vbooffset_vertex3f           = size;if (loadmodel->surfmesh.data_vertex3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2494                 loadmodel->surfmesh.vbooffset_svector3f          = size;if (loadmodel->surfmesh.data_svector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2495                 loadmodel->surfmesh.vbooffset_tvector3f          = size;if (loadmodel->surfmesh.data_tvector3f         ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2496                 loadmodel->surfmesh.vbooffset_normal3f           = size;if (loadmodel->surfmesh.data_normal3f          ) size += loadmodel->surfmesh.num_vertices * sizeof(float[3]);
2497                 loadmodel->surfmesh.vbooffset_texcoordtexture2f  = size;if (loadmodel->surfmesh.data_texcoordtexture2f ) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2498                 loadmodel->surfmesh.vbooffset_texcoordlightmap2f = size;if (loadmodel->surfmesh.data_texcoordlightmap2f) size += loadmodel->surfmesh.num_vertices * sizeof(float[2]);
2499                 loadmodel->surfmesh.vbooffset_lightmapcolor4f    = size;if (loadmodel->surfmesh.data_lightmapcolor4f   ) size += loadmodel->surfmesh.num_vertices * sizeof(float[4]);
2500                 mem = (unsigned char *)Mem_Alloc(tempmempool, size);
2501                 if (loadmodel->surfmesh.data_vertex3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_vertex3f          , loadmodel->surfmesh.data_vertex3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2502                 if (loadmodel->surfmesh.data_svector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_svector3f         , loadmodel->surfmesh.data_svector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2503                 if (loadmodel->surfmesh.data_tvector3f         ) memcpy(mem + loadmodel->surfmesh.vbooffset_tvector3f         , loadmodel->surfmesh.data_tvector3f         , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2504                 if (loadmodel->surfmesh.data_normal3f          ) memcpy(mem + loadmodel->surfmesh.vbooffset_normal3f          , loadmodel->surfmesh.data_normal3f          , loadmodel->surfmesh.num_vertices * sizeof(float[3]));
2505                 if (loadmodel->surfmesh.data_texcoordtexture2f ) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordtexture2f , loadmodel->surfmesh.data_texcoordtexture2f , loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2506                 if (loadmodel->surfmesh.data_texcoordlightmap2f) memcpy(mem + loadmodel->surfmesh.vbooffset_texcoordlightmap2f, loadmodel->surfmesh.data_texcoordlightmap2f, loadmodel->surfmesh.num_vertices * sizeof(float[2]));
2507                 if (loadmodel->surfmesh.data_lightmapcolor4f   ) memcpy(mem + loadmodel->surfmesh.vbooffset_lightmapcolor4f   , loadmodel->surfmesh.data_lightmapcolor4f   , loadmodel->surfmesh.num_vertices * sizeof(float[4]));
2508                 loadmodel->surfmesh.vbo = R_Mesh_CreateStaticBufferObject(GL_ARRAY_BUFFER_ARB, mem, size, loadmodel->name);
2509                 Mem_Free(mem);
2510         }
2511 }
2512
2513 static void Mod_Decompile_OBJ(dp_model_t *model, const char *filename, const char *mtlfilename, const char *originalfilename)
2514 {
2515         int vertexindex, surfaceindex, triangleindex, textureindex, countvertices = 0, countsurfaces = 0, countfaces = 0, counttextures = 0;
2516         int a, b, c;
2517         const char *texname;
2518         const int *e;
2519         const float *v, *vn, *vt;
2520         size_t l;
2521         size_t outbufferpos = 0;
2522         size_t outbuffermax = 0x100000;
2523         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2524         const msurface_t *surface;
2525         const int maxtextures = 256;
2526         char *texturenames = (char *) Z_Malloc(maxtextures * MAX_QPATH);
2527
2528         // construct the mtllib file
2529         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "# mtllib for %s exported by darkplaces engine\n", originalfilename);
2530         if (l > 0)
2531                 outbufferpos += l;
2532         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2533         {
2534                 countsurfaces++;
2535                 countvertices += surface->num_vertices;
2536                 countfaces += surface->num_triangles;
2537                 texname = (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default";
2538                 for (textureindex = 0;textureindex < counttextures;textureindex++)
2539                         if (!strcmp(texturenames + textureindex * MAX_QPATH, texname))
2540                                 break;
2541                 if (textureindex < counttextures)
2542                         continue; // already wrote this material entry
2543                 if (textureindex >= maxtextures)
2544                         continue; // just a precaution
2545                 textureindex = counttextures++;
2546                 strlcpy(texturenames + textureindex * MAX_QPATH, texname, MAX_QPATH);
2547                 if (outbufferpos >= outbuffermax >> 1)
2548                 {
2549                         outbuffermax *= 2;
2550                         oldbuffer = outbuffer;
2551                         outbuffer = (char *) Z_Malloc(outbuffermax);
2552                         memcpy(outbuffer, oldbuffer, outbufferpos);
2553                         Z_Free(oldbuffer);
2554                 }
2555                 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");
2556                 if (l > 0)
2557                         outbufferpos += l;
2558         }
2559
2560         // write the mtllib file
2561         FS_WriteFile(mtlfilename, outbuffer, outbufferpos);
2562         outbufferpos = 0;
2563
2564         // construct the obj file
2565         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);
2566         if (l > 0)
2567                 outbufferpos += l;
2568         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)
2569         {
2570                 if (outbufferpos >= outbuffermax >> 1)
2571                 {
2572                         outbuffermax *= 2;
2573                         oldbuffer = outbuffer;
2574                         outbuffer = (char *) Z_Malloc(outbuffermax);
2575                         memcpy(outbuffer, oldbuffer, outbufferpos);
2576                         Z_Free(oldbuffer);
2577                 }
2578                 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]);
2579                 if (l > 0)
2580                         outbufferpos += l;
2581         }
2582         for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2583         {
2584                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "usemtl %s\n", (surface->texture && surface->texture->name[0]) ? surface->texture->name : "default");
2585                 if (l > 0)
2586                         outbufferpos += l;
2587                 for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2588                 {
2589                         if (outbufferpos >= outbuffermax >> 1)
2590                         {
2591                                 outbuffermax *= 2;
2592                                 oldbuffer = outbuffer;
2593                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2594                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2595                                 Z_Free(oldbuffer);
2596                         }
2597                         a = e[0]+1;
2598                         b = e[2]+1;
2599                         c = e[1]+1;
2600                         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);
2601                         if (l > 0)
2602                                 outbufferpos += l;
2603                 }
2604         }
2605
2606         // write the obj file
2607         FS_WriteFile(filename, outbuffer, outbufferpos);
2608
2609         // clean up
2610         Z_Free(outbuffer);
2611         Z_Free(texturenames);
2612
2613         // print some stats
2614         Con_Printf("Wrote %s (%i bytes, %i vertices, %i faces, %i surfaces with %i distinct textures)\n", filename, (int)outbufferpos, countvertices, countfaces, countsurfaces, counttextures);
2615 }
2616
2617 static void Mod_Decompile_SMD(dp_model_t *model, const char *filename, int firstpose, int numposes, qboolean writetriangles)
2618 {
2619         int countnodes = 0, counttriangles = 0, countframes = 0;
2620         int surfaceindex;
2621         int triangleindex;
2622         int transformindex;
2623         int poseindex;
2624         int cornerindex;
2625         float modelscale;
2626         const int *e;
2627         const float *pose;
2628         size_t l;
2629         size_t outbufferpos = 0;
2630         size_t outbuffermax = 0x100000;
2631         char *outbuffer = (char *) Z_Malloc(outbuffermax), *oldbuffer;
2632         const msurface_t *surface;
2633         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "version 1\nnodes\n");
2634         if (l > 0)
2635                 outbufferpos += l;
2636         modelscale = 1;
2637         if(model->num_poses >= 0)
2638                 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]);
2639         if(fabs(modelscale - 1) > 1e-4)
2640         {
2641                 if(firstpose == 0) // only print the when writing the reference pose
2642                         Con_Printf("The model has an old-style model scale of %f\n", modelscale);
2643         }
2644         else
2645                 modelscale = 1;
2646         for (transformindex = 0;transformindex < model->num_bones;transformindex++)
2647         {
2648                 if (outbufferpos >= outbuffermax >> 1)
2649                 {
2650                         outbuffermax *= 2;
2651                         oldbuffer = outbuffer;
2652                         outbuffer = (char *) Z_Malloc(outbuffermax);
2653                         memcpy(outbuffer, oldbuffer, outbufferpos);
2654                         Z_Free(oldbuffer);
2655                 }
2656                 countnodes++;
2657                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%3i \"%s\" %3i\n", transformindex, model->data_bones[transformindex].name, model->data_bones[transformindex].parent);
2658                 if (l > 0)
2659                         outbufferpos += l;
2660         }
2661         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\nskeleton\n");
2662         if (l > 0)
2663                 outbufferpos += l;
2664         for (poseindex = 0, pose = model->data_poses + model->num_bones * 12 * firstpose;poseindex < numposes;poseindex++)
2665         {
2666                 countframes++;
2667                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "time %i\n", poseindex);
2668                 if (l > 0)
2669                         outbufferpos += l;
2670                 for (transformindex = 0;transformindex < model->num_bones;transformindex++, pose += 12)
2671                 {
2672                         float a, b, c;
2673                         float angles[3];
2674                         float mtest[3][4];
2675                         if (outbufferpos >= outbuffermax >> 1)
2676                         {
2677                                 outbuffermax *= 2;
2678                                 oldbuffer = outbuffer;
2679                                 outbuffer = (char *) Z_Malloc(outbuffermax);
2680                                 memcpy(outbuffer, oldbuffer, outbufferpos);
2681                                 Z_Free(oldbuffer);
2682                         }
2683
2684                         // strangely the smd angles are for a transposed matrix, so we
2685                         // have to generate a transposed matrix, then convert that...
2686                         mtest[0][0] = pose[ 0];
2687                         mtest[0][1] = pose[ 4];
2688                         mtest[0][2] = pose[ 8];
2689                         mtest[0][3] = pose[ 3];
2690                         mtest[1][0] = pose[ 1];
2691                         mtest[1][1] = pose[ 5];
2692                         mtest[1][2] = pose[ 9];
2693                         mtest[1][3] = pose[ 7];
2694                         mtest[2][0] = pose[ 2];
2695                         mtest[2][1] = pose[ 6];
2696                         mtest[2][2] = pose[10];
2697                         mtest[2][3] = pose[11];
2698                         AnglesFromVectors(angles, mtest[0], mtest[2], false);
2699                         if (angles[0] >= 180) angles[0] -= 360;
2700                         if (angles[1] >= 180) angles[1] -= 360;
2701                         if (angles[2] >= 180) angles[2] -= 360;
2702
2703                         a = DEG2RAD(angles[ROLL]);
2704                         b = DEG2RAD(angles[PITCH]);
2705                         c = DEG2RAD(angles[YAW]);
2706
2707 #if 0
2708 {
2709                         float cy, sy, cp, sp, cr, sr;
2710                         float test[3][4];
2711                         // smd matrix construction, for comparing to non-transposed m
2712                         sy = sin(c);
2713                         cy = cos(c);
2714                         sp = sin(b);
2715                         cp = cos(b);
2716                         sr = sin(a);
2717                         cr = cos(a);
2718
2719                         test[0][0] = cp*cy;
2720                         test[1][0] = cp*sy;
2721                         test[2][0] = -sp;
2722                         test[0][1] = sr*sp*cy+cr*-sy;
2723                         test[1][1] = sr*sp*sy+cr*cy;
2724                         test[2][1] = sr*cp;
2725                         test[0][2] = (cr*sp*cy+-sr*-sy);
2726                         test[1][2] = (cr*sp*sy+-sr*cy);
2727                         test[2][2] = cr*cp;
2728                         test[0][3] = pose[3];
2729                         test[1][3] = pose[7];
2730                         test[2][3] = pose[11];
2731 }
2732 #endif
2733                         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]));
2734                         if (l > 0)
2735                                 outbufferpos += l;
2736                 }
2737         }
2738         l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
2739         if (l > 0)
2740                 outbufferpos += l;
2741         if (writetriangles)
2742         {
2743                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "triangles\n");
2744                 if (l > 0)
2745                         outbufferpos += l;
2746                 for (surfaceindex = 0, surface = model->data_surfaces;surfaceindex < model->num_surfaces;surfaceindex++, surface++)
2747                 {
2748                         for (triangleindex = 0, e = model->surfmesh.data_element3i + surface->num_firsttriangle * 3;triangleindex < surface->num_triangles;triangleindex++, e += 3)
2749                         {
2750                                 counttriangles++;
2751                                 if (outbufferpos >= outbuffermax >> 1)
2752                                 {
2753                                         outbuffermax *= 2;
2754                                         oldbuffer = outbuffer;
2755                                         outbuffer = (char *) Z_Malloc(outbuffermax);
2756                                         memcpy(outbuffer, oldbuffer, outbufferpos);
2757                                         Z_Free(oldbuffer);
2758                                 }
2759                                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "%s\n", surface->texture && surface->texture->name[0] ? surface->texture->name : "default.bmp");
2760                                 if (l > 0)
2761                                         outbufferpos += l;
2762                                 for (cornerindex = 0;cornerindex < 3;cornerindex++)
2763                                 {
2764                                         const int index = e[2-cornerindex];
2765                                         const float *v = model->surfmesh.data_vertex3f + index * 3;
2766                                         const float *vn = model->surfmesh.data_normal3f + index * 3;
2767                                         const float *vt = model->surfmesh.data_texcoordtexture2f + index * 2;
2768                                         const int *wi = model->surfmesh.data_vertexweightindex4i + index * 4;
2769                                         const float *wf = model->surfmesh.data_vertexweightinfluence4f + index * 4;
2770                                              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]);
2771                                         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]);
2772                                         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]);
2773                                         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]);
2774                                         if (l > 0)
2775                                                 outbufferpos += l;
2776                                 }
2777                         }
2778                 }
2779                 l = dpsnprintf(outbuffer + outbufferpos, outbuffermax - outbufferpos, "end\n");
2780                 if (l > 0)
2781                         outbufferpos += l;
2782         }
2783
2784         FS_WriteFile(filename, outbuffer, outbufferpos);
2785         Z_Free(outbuffer);
2786
2787         Con_Printf("Wrote %s (%i bytes, %i nodes, %i frames, %i triangles)\n", filename, (int)outbufferpos, countnodes, countframes, counttriangles);
2788 }
2789
2790 /*
2791 ================
2792 Mod_Decompile_f
2793
2794 decompiles a model to editable files
2795 ================
2796 */
2797 static void Mod_Decompile_f(void)
2798 {
2799         int i, j, k, l, first, count;
2800         dp_model_t *mod;
2801         char inname[MAX_QPATH];
2802         char outname[MAX_QPATH];
2803         char mtlname[MAX_QPATH];
2804         char basename[MAX_QPATH];
2805         char animname[MAX_QPATH];
2806         char animname2[MAX_QPATH];
2807         char zymtextbuffer[16384];
2808         char dpmtextbuffer[16384];
2809         int zymtextsize = 0;
2810         int dpmtextsize = 0;
2811
2812         if (Cmd_Argc() != 2)
2813         {
2814                 Con_Print("usage: modeldecompile <filename>\n");
2815                 return;
2816         }
2817
2818         strlcpy(inname, Cmd_Argv(1), sizeof(inname));
2819         FS_StripExtension(inname, basename, sizeof(basename));
2820
2821         mod = Mod_ForName(inname, false, true, inname[0] == '*' ? cl.model_name[1] : NULL);
2822         if (mod->brush.submodel)
2823         {
2824                 // if we're decompiling a submodel, be sure to give it a proper name based on its parent
2825                 FS_StripExtension(cl.model_name[1], outname, sizeof(outname));
2826                 dpsnprintf(basename, sizeof(basename), "%s/%s", outname, mod->name);
2827                 outname[0] = 0;
2828         }
2829         if (!mod)
2830         {
2831                 Con_Print("No such model\n");
2832                 return;
2833         }
2834         if (!mod->surfmesh.num_triangles)
2835         {
2836                 Con_Print("Empty model (or sprite)\n");
2837                 return;
2838         }
2839
2840         // export OBJ if possible (not on sprites)
2841         if (mod->surfmesh.num_triangles)
2842         {
2843                 dpsnprintf(outname, sizeof(outname), "%s_decompiled.obj", basename);
2844                 dpsnprintf(mtlname, sizeof(mtlname), "%s_decompiled.mtl", basename);
2845                 Mod_Decompile_OBJ(mod, outname, mtlname, inname);
2846         }
2847
2848         // export SMD if possible (only for skeletal models)
2849         if (mod->surfmesh.num_triangles && mod->num_bones)
2850         {
2851                 dpsnprintf(outname, sizeof(outname), "%s_decompiled/ref1.smd", basename);
2852                 Mod_Decompile_SMD(mod, outname, 0, 1, true);
2853                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "output out.zym\nscale 1\norigin 0 0 0\nmesh ref1.smd\n");
2854                 if (l > 0) zymtextsize += l;
2855                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "outputdir .\nmodel out\nscale 1\norigin 0 0 0\nscene ref1.smd\n");
2856                 if (l > 0) dpmtextsize += l;
2857                 for (i = 0;i < mod->numframes;i = j)
2858                 {
2859                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
2860                         first = mod->animscenes[i].firstframe;
2861                         if (mod->animscenes[i].framecount > 1)
2862                         {
2863                                 // framegroup anim
2864                                 count = mod->animscenes[i].framecount;
2865                                 j = i + 1;
2866                         }
2867                         else
2868                         {
2869                                 // individual frame
2870                                 // check for additional frames with same name
2871                                 for (l = 0, k = strlen(animname);animname[l];l++)
2872                                         if ((animname[l] < '0' || animname[l] > '9') && animname[l] != '_')
2873                                                 k = l + 1;
2874                                 animname[k] = 0;
2875                                 count = mod->num_poses - first;
2876                                 for (j = i + 1;j < mod->numframes;j++)
2877                                 {
2878                                         strlcpy(animname2, mod->animscenes[j].name, sizeof(animname2));
2879                                         for (l = 0, k = strlen(animname2);animname2[l];l++)
2880                                                 if ((animname2[l] < '0' || animname2[l] > '9') && animname2[l] != '_')
2881                                                         k = l + 1;
2882                                         animname2[k] = 0;
2883                                         if (strcmp(animname2, animname) || mod->animscenes[j].framecount > 1)
2884                                         {
2885                                                 count = mod->animscenes[j].firstframe - first;
2886                                                 break;
2887                                         }
2888                                 }
2889                                 // if it's only one frame, use the original frame name
2890                                 if (j == i + 1)
2891                                         strlcpy(animname, mod->animscenes[i].name, sizeof(animname));
2892
2893                         }
2894                         dpsnprintf(outname, sizeof(outname), "%s_decompiled/%s.smd", basename, animname);
2895                         Mod_Decompile_SMD(mod, outname, first, count, false);
2896                         if (zymtextsize < (int)sizeof(zymtextbuffer) - 100)
2897                         {
2898                                 l = dpsnprintf(zymtextbuffer + zymtextsize, sizeof(zymtextbuffer) - zymtextsize, "scene %s.smd fps %g\n", animname, mod->animscenes[i].framerate);
2899                                 if (l > 0) zymtextsize += l;
2900                         }
2901                         if (dpmtextsize < (int)sizeof(dpmtextbuffer) - 100)
2902                         {
2903                                 l = dpsnprintf(dpmtextbuffer + dpmtextsize, sizeof(dpmtextbuffer) - dpmtextsize, "scene %s.smd\n", animname);
2904                                 if (l > 0) dpmtextsize += l;
2905                         }
2906                 }
2907                 if (zymtextsize)
2908                         FS_WriteFile(va("%s_decompiled/out_zym.txt", basename), zymtextbuffer, (fs_offset_t)zymtextsize);
2909                 if (dpmtextsize)
2910                         FS_WriteFile(va("%s_decompiled/out_dpm.txt", basename), dpmtextbuffer, (fs_offset_t)dpmtextsize);
2911         }
2912 }
2913