gl_rmain.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 // r_main.c
  21
  22 #include "quakedef.h"
  23
  24 // used for dlight push checking and other things
  25 int r_framecount;
  26
  27 mplane_t frustum[4];
  28
  29 matrix4x4_t r_identitymatrix;
  30
  31 int c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
  32
  33 // true during envmap command capture
  34 qboolean envmap;
  35
  36 float r_farclip;
  37
  38 // view origin
  39 vec3_t r_origin;
  40 vec3_t vpn;
  41 vec3_t vright;
  42 vec3_t vup;
  43
  44 //
  45 // screen size info
  46 //
  47 refdef_t r_refdef;
  48
  49 // 8.8 fraction of base light value
  50 unsigned short d_lightstylevalue[256];
  51
  52 cvar_t r_drawentities = {0, "r_drawentities","1"};
  53 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
  54 cvar_t r_shadows = {CVAR_SAVE, "r_shadows", "1"};
  55 cvar_t r_shadow_staticworldlights = {0, "r_shadow_staticworldlights", "1"};
  56 cvar_t r_speeds = {0, "r_speeds","0"};
  57 cvar_t r_fullbright = {0, "r_fullbright","0"};
  58 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  59 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  60 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  61 cvar_t r_shadow_cull = {0, "r_shadow_cull", "1"};
  62
  63 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
  64 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  65 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
  66 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
  67 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
  68 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
  69 cvar_t gl_fogend = {0, "gl_fogend","0"};
  70
  71 cvar_t r_textureunits = {0, "r_textureunits", "32"};
  72
  73 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
  74 {
  75         int i;
  76         for (i = 0;i < verts;i++)
  77         {
  78                 out[0] = in[0] * r;
  79                 out[1] = in[1] * g;
  80                 out[2] = in[2] * b;
  81                 out[3] = in[3];
  82                 in += 4;
  83                 out += 4;
  84         }
  85 }
  86
  87 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
  88 {
  89         int i;
  90         for (i = 0;i < verts;i++)
  91         {
  92                 out[0] = r;
  93                 out[1] = g;
  94                 out[2] = b;
  95                 out[3] = a;
  96                 out += 4;
  97         }
  98 }
  99
 100 /*
 101 ====================
 102 R_TimeRefresh_f
 103
 104 For program optimization
 105 ====================
 106 */
 107 qboolean intimerefresh = 0;
 108 static void R_TimeRefresh_f (void)
 109 {
 110         int i;
 111         float start, stop, time;
 112
 113         intimerefresh = 1;
 114         start = Sys_DoubleTime ();
 115         for (i = 0;i < 128;i++)
 116         {
 117                 r_refdef.viewangles[0] = 0;
 118                 r_refdef.viewangles[1] = i/128.0*360.0;
 119                 r_refdef.viewangles[2] = 0;
 120                 CL_UpdateScreen();
 121         }
 122
 123         stop = Sys_DoubleTime ();
 124         intimerefresh = 0;
 125         time = stop-start;
 126         Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
 127 }
 128
 129 vec3_t fogcolor;
 130 vec_t fogdensity;
 131 float fog_density, fog_red, fog_green, fog_blue;
 132 qboolean fogenabled;
 133 qboolean oldgl_fogenable;
 134 void R_SetupFog(void)
 135 {
 136         if (gamemode == GAME_NEHAHRA)
 137         {
 138                 if (gl_fogenable.integer)
 139                 {
 140                         oldgl_fogenable = true;
 141                         fog_density = gl_fogdensity.value;
 142                         fog_red = gl_fogred.value;
 143                         fog_green = gl_foggreen.value;
 144                         fog_blue = gl_fogblue.value;
 145                 }
 146                 else if (oldgl_fogenable)
 147                 {
 148                         oldgl_fogenable = false;
 149                         fog_density = 0;
 150                         fog_red = 0;
 151                         fog_green = 0;
 152                         fog_blue = 0;
 153                 }
 154         }
 155         if (fog_density)
 156         {
 157                 fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 158                 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 159                 fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 160         }
 161         if (fog_density)
 162         {
 163                 fogenabled = true;
 164                 fogdensity = -4000.0f / (fog_density * fog_density);
 165                 // fog color was already set
 166         }
 167         else
 168                 fogenabled = false;
 169 }
 170
 171 // FIXME: move this to client?
 172 void FOG_clear(void)
 173 {
 174         if (gamemode == GAME_NEHAHRA)
 175         {
 176                 Cvar_Set("gl_fogenable", "0");
 177                 Cvar_Set("gl_fogdensity", "0.2");
 178                 Cvar_Set("gl_fogred", "0.3");
 179                 Cvar_Set("gl_foggreen", "0.3");
 180                 Cvar_Set("gl_fogblue", "0.3");
 181         }
 182         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 183 }
 184
 185 // FIXME: move this to client?
 186 void FOG_registercvars(void)
 187 {
 188         if (gamemode == GAME_NEHAHRA)
 189         {
 190                 Cvar_RegisterVariable (&gl_fogenable);
 191                 Cvar_RegisterVariable (&gl_fogdensity);
 192                 Cvar_RegisterVariable (&gl_fogred);
 193                 Cvar_RegisterVariable (&gl_foggreen);
 194                 Cvar_RegisterVariable (&gl_fogblue);
 195                 Cvar_RegisterVariable (&gl_fogstart);
 196                 Cvar_RegisterVariable (&gl_fogend);
 197         }
 198 }
 199
 200 void gl_main_start(void)
 201 {
 202 }
 203
 204 void gl_main_shutdown(void)
 205 {
 206 }
 207
 208 extern void CL_ParseEntityLump(char *entitystring);
 209 void gl_main_newmap(void)
 210 {
 211         if (cl.worldmodel && cl.worldmodel->entities)
 212                 CL_ParseEntityLump(cl.worldmodel->entities);
 213         r_framecount = 1;
 214 }
 215
 216 void GL_Main_Init(void)
 217 {
 218         Matrix4x4_CreateIdentity(&r_identitymatrix);
 219 // FIXME: move this to client?
 220         FOG_registercvars();
 221         Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
 222         Cvar_RegisterVariable (&r_drawentities);
 223         Cvar_RegisterVariable (&r_drawviewmodel);
 224         Cvar_RegisterVariable (&r_shadows);
 225         Cvar_RegisterVariable (&r_shadow_staticworldlights);
 226         Cvar_RegisterVariable (&r_speeds);
 227         Cvar_RegisterVariable (&r_fullbrights);
 228         Cvar_RegisterVariable (&r_wateralpha);
 229         Cvar_RegisterVariable (&r_dynamic);
 230         Cvar_RegisterVariable (&r_fullbright);
 231         Cvar_RegisterVariable (&r_textureunits);
 232         Cvar_RegisterVariable (&r_shadow_cull);
 233         if (gamemode == GAME_NEHAHRA || gamemode == GAME_NEXIUZ)
 234                 Cvar_SetValue("r_fullbrights", 0);
 235         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 236 }
 237
 238 vec3_t r_farclip_origin;
 239 vec3_t r_farclip_direction;
 240 vec_t r_farclip_directiondist;
 241 vec_t r_farclip_meshfarclip;
 242 int r_farclip_directionbit0;
 243 int r_farclip_directionbit1;
 244 int r_farclip_directionbit2;
 245
 246 // start a farclip measuring session
 247 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip)
 248 {
 249         VectorCopy(origin, r_farclip_origin);
 250         VectorCopy(direction, r_farclip_direction);
 251         r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
 252         r_farclip_directionbit0 = r_farclip_direction[0] < 0;
 253         r_farclip_directionbit1 = r_farclip_direction[1] < 0;
 254         r_farclip_directionbit2 = r_farclip_direction[2] < 0;
 255         r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
 256 }
 257
 258 // enlarge farclip to accomodate box
 259 void R_FarClip_Box(vec3_t mins, vec3_t maxs)
 260 {
 261         float d;
 262         d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
 263           + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
 264           + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
 265         if (r_farclip_meshfarclip < d)
 266                 r_farclip_meshfarclip = d;
 267 }
 268
 269 // return farclip value
 270 float R_FarClip_Finish(void)
 271 {
 272         return r_farclip_meshfarclip - r_farclip_directiondist;
 273 }
 274
 275 /*
 276 ===============
 277 R_NewMap
 278 ===============
 279 */
 280 void R_NewMap (void)
 281 {
 282         R_Modules_NewMap();
 283 }
 284
 285 extern void R_Textures_Init(void);
 286 extern void Mod_RenderInit(void);
 287 extern void GL_Draw_Init(void);
 288 extern void GL_Main_Init(void);
 289 extern void R_Shadow_Init(void);
 290 extern void GL_Models_Init(void);
 291 extern void R_Sky_Init(void);
 292 extern void GL_Surf_Init(void);
 293 extern void R_Crosshairs_Init(void);
 294 extern void R_Light_Init(void);
 295 extern void R_Particles_Init(void);
 296 extern void R_Explosion_Init(void);
 297 extern void ui_init(void);
 298 extern void gl_backend_init(void);
 299 extern void Sbar_Init(void);
 300
 301 void Render_Init(void)
 302 {
 303         R_Textures_Init();
 304         Mod_RenderInit();
 305         gl_backend_init();
 306         R_MeshQueue_Init();
 307         GL_Draw_Init();
 308         GL_Main_Init();
 309         R_Shadow_Init();
 310         GL_Models_Init();
 311         R_Sky_Init();
 312         GL_Surf_Init();
 313         R_Crosshairs_Init();
 314         R_Light_Init();
 315         R_Particles_Init();
 316         R_Explosion_Init();
 317         ui_init();
 318         Sbar_Init();
 319 }
 320
 321 /*
 322 ===============
 323 GL_Init
 324 ===============
 325 */
 326 extern char *ENGINE_EXTENSIONS;
 327 void GL_Init (void)
 328 {
 329         VID_CheckExtensions();
 330
 331         // LordHavoc: report supported extensions
 332         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 333 }
 334
 335 int R_CullBox(const vec3_t mins, const vec3_t maxs)
 336 {
 337         int i;
 338         mplane_t *p;
 339         for (i = 0;i < 4;i++)
 340         {
 341                 p = frustum + i;
 342                 switch(p->signbits)
 343                 {
 344                 default:
 345                 case 0:
 346                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
 347                                 return true;
 348                         break;
 349                 case 1:
 350                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
 351                                 return true;
 352                         break;
 353                 case 2:
 354                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
 355                                 return true;
 356                         break;
 357                 case 3:
 358                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
 359                                 return true;
 360                         break;
 361                 case 4:
 362                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
 363                                 return true;
 364                         break;
 365                 case 5:
 366                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
 367                                 return true;
 368                         break;
 369                 case 6:
 370                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
 371                                 return true;
 372                         break;
 373                 case 7:
 374                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
 375                                 return true;
 376                         break;
 377                 }
 378         }
 379         return false;
 380 }
 381
 382 int PVS_CullBox(const vec3_t mins, const vec3_t maxs)
 383 {
 384         int stackpos, sides;
 385         mnode_t *node, *stack[4096];
 386         if (cl.worldmodel == NULL)
 387                 return false;
 388         stackpos = 0;
 389         stack[stackpos++] = cl.worldmodel->nodes;
 390         while (stackpos)
 391         {
 392                 node = stack[--stackpos];
 393                 if (node->contents < 0)
 394                 {
 395                         if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
 396                                 return false;
 397                 }
 398                 else
 399                 {
 400                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 401                         if (sides & 2 && stackpos < 4096)
 402                                 stack[stackpos++] = node->children[1];
 403                         if (sides & 1 && stackpos < 4096)
 404                                 stack[stackpos++] = node->children[0];
 405                 }
 406         }
 407         return true;
 408 }
 409
 410 int VIS_CullBox(const vec3_t mins, const vec3_t maxs)
 411 {
 412         int stackpos, sides;
 413         mnode_t *node, *stack[4096];
 414         if (R_CullBox(mins, maxs))
 415                 return true;
 416         if (cl.worldmodel == NULL)
 417                 return false;
 418         stackpos = 0;
 419         stack[stackpos++] = cl.worldmodel->nodes;
 420         while (stackpos)
 421         {
 422                 node = stack[--stackpos];
 423                 if (node->contents < 0)
 424                 {
 425                         if (((mleaf_t *)node)->visframe == r_framecount)
 426                                 return false;
 427                 }
 428                 else
 429                 {
 430                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 431                         if (sides & 2 && stackpos < 4096)
 432                                 stack[stackpos++] = node->children[1];
 433                         if (sides & 1 && stackpos < 4096)
 434                                 stack[stackpos++] = node->children[0];
 435                 }
 436         }
 437         return true;
 438 }
 439
 440 int R_CullSphere(const vec3_t origin, vec_t radius)
 441 {
 442         return (DotProduct(frustum[0].normal, origin) + radius < frustum[0].dist
 443              || DotProduct(frustum[1].normal, origin) + radius < frustum[1].dist
 444              || DotProduct(frustum[2].normal, origin) + radius < frustum[2].dist
 445              || DotProduct(frustum[3].normal, origin) + radius < frustum[3].dist);
 446 }
 447
 448 int PVS_CullSphere(const vec3_t origin, vec_t radius)
 449 {
 450         int stackpos;
 451         mnode_t *node, *stack[4096];
 452         float dist;
 453         if (cl.worldmodel == NULL)
 454                 return false;
 455         stackpos = 0;
 456         stack[stackpos++] = cl.worldmodel->nodes;
 457         while (stackpos)
 458         {
 459                 node = stack[--stackpos];
 460                 if (node->contents < 0)
 461                 {
 462                         if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
 463                                 return false;
 464                 }
 465                 else
 466                 {
 467                         dist = PlaneDiff(origin, node->plane);
 468                         if (dist <= radius)
 469                                 stack[stackpos++] = node->children[1];
 470                         if (dist >= -radius)
 471                                 stack[stackpos++] = node->children[0];
 472                 }
 473         }
 474         return true;
 475 }
 476
 477 int VIS_CullSphere(const vec3_t origin, vec_t radius)
 478 {
 479         int stackpos;
 480         mnode_t *node, *stack[4096];
 481         float dist;
 482         if (R_CullSphere(origin, radius))
 483                 return true;
 484         if (cl.worldmodel == NULL)
 485                 return false;
 486         stackpos = 0;
 487         stack[stackpos++] = cl.worldmodel->nodes;
 488         while (stackpos)
 489         {
 490                 node = stack[--stackpos];
 491                 if (node->contents < 0)
 492                 {
 493                         if (((mleaf_t *)node)->visframe == r_framecount)
 494                                 return false;
 495                 }
 496                 else
 497                 {
 498                         dist = PlaneDiff(origin, node->plane);
 499                         if (dist <= radius)
 500                                 stack[stackpos++] = node->children[1];
 501                         if (dist >= -radius)
 502                                 stack[stackpos++] = node->children[0];
 503                 }
 504         }
 505         return true;
 506 }
 507
 508
 509 //==================================================================================
 510
 511 static void R_MarkEntities (void)
 512 {
 513         int i;
 514         vec3_t v;
 515         entity_render_t *ent;
 516
 517         ent = &cl_entities[0].render;
 518         Matrix4x4_CreateIdentity(&ent->matrix);
 519         Matrix4x4_CreateIdentity(&ent->inversematrix);
 520
 521         if (cl.worldmodel)
 522                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 523
 524         if (!r_drawentities.integer)
 525                 return;
 526
 527         for (i = 0;i < r_refdef.numentities;i++)
 528         {
 529                 ent = r_refdef.entities[i];
 530                 Mod_CheckLoaded(ent->model);
 531
 532                 // move view-relative models to where they should be
 533                 if (ent->flags & RENDER_VIEWMODEL)
 534                 {
 535                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 536                         ent->flags -= RENDER_VIEWMODEL;
 537                         // transform origin
 538                         VectorCopy(ent->origin, v);
 539                         ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 540                         ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 541                         ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 542                         // adjust angles
 543                         VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
 544                 }
 545
 546                 VectorCopy(ent->angles, v);
 547                 if (!ent->model || ent->model->type != mod_brush)
 548                         v[0] = -v[0];
 549                 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
 550                 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 551                 R_LerpAnimation(ent);
 552                 R_UpdateEntLights(ent);
 553                 if ((chase_active.integer || !(ent->flags & RENDER_EXTERIORMODEL))
 554                  && !VIS_CullSphere(ent->origin, ent->model->radius * ent->scale)
 555                  && !VIS_CullBox(ent->mins, ent->maxs))
 556                 {
 557                         ent->visframe = r_framecount;
 558                         R_FarClip_Box(ent->mins, ent->maxs);
 559                 }
 560         }
 561 }
 562
 563 // only used if skyrendermasked, and normally returns false
 564 int R_DrawBrushModelsSky (void)
 565 {
 566         int i, sky;
 567         entity_render_t *ent;
 568
 569         if (!r_drawentities.integer)
 570                 return false;
 571
 572         sky = false;
 573         for (i = 0;i < r_refdef.numentities;i++)
 574         {
 575                 ent = r_refdef.entities[i];
 576                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 577                 {
 578                         ent->model->DrawSky(ent);
 579                         sky = true;
 580                 }
 581         }
 582         return sky;
 583 }
 584
 585 /*
 586 =============
 587 R_DrawViewModel
 588 =============
 589 */
 590 /*
 591 void R_DrawViewModel (void)
 592 {
 593         entity_render_t *ent;
 594
 595         // FIXME: move these checks to client
 596         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 597                 return;
 598
 599         ent = &cl.viewent.render;
 600         Mod_CheckLoaded(ent->model);
 601         R_LerpAnimation(ent);
 602         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 603         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 604         R_UpdateEntLights(ent);
 605         ent->model->Draw(ent);
 606 }
 607 */
 608
 609 void R_DrawNoModel(entity_render_t *ent);
 610 void R_DrawModels ()
 611 {
 612         int i;
 613         entity_render_t *ent;
 614
 615         if (!r_drawentities.integer)
 616                 return;
 617
 618         for (i = 0;i < r_refdef.numentities;i++)
 619         {
 620                 ent = r_refdef.entities[i];
 621                 if (ent->visframe == r_framecount)
 622                 {
 623                         if (ent->model && ent->model->Draw != NULL)
 624                                 ent->model->Draw(ent);
 625                         else
 626                                 R_DrawNoModel(ent);
 627                 }
 628         }
 629 }
 630
 631 void R_DrawFakeShadows (void)
 632 {
 633         int i;
 634         entity_render_t *ent;
 635
 636         ent = &cl_entities[0].render;
 637         if (ent->model && ent->model->DrawFakeShadow)
 638                 ent->model->DrawFakeShadow(ent);
 639
 640         if (!r_drawentities.integer)
 641                 return;
 642         for (i = 0;i < r_refdef.numentities;i++)
 643         {
 644                 ent = r_refdef.entities[i];
 645                 if (ent->model && ent->model->DrawFakeShadow)
 646                         ent->model->DrawFakeShadow(ent);
 647         }
 648 }
 649
 650 #include "r_shadow.h"
 651
 652 int shadowframecount = 0;
 653
 654 int Light_CullBox(const vec3_t mins, const vec3_t maxs)
 655 {
 656         int stackpos, sides;
 657         mnode_t *node, *stack[4096];
 658         if (cl.worldmodel == NULL)
 659                 return false;
 660         stackpos = 0;
 661         stack[stackpos++] = cl.worldmodel->nodes;
 662         while (stackpos)
 663         {
 664                 node = stack[--stackpos];
 665                 if (node->contents < 0)
 666                 {
 667                         if (((mleaf_t *)node)->worldnodeframe == shadowframecount)
 668                                 return false;
 669                 }
 670                 else
 671                 {
 672                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 673                         if (sides & 2 && stackpos < 4096)
 674                                 stack[stackpos++] = node->children[1];
 675                         if (sides & 1 && stackpos < 4096)
 676                                 stack[stackpos++] = node->children[0];
 677                 }
 678         }
 679         return true;
 680 }
 681
 682 int LightAndVis_CullBox(const vec3_t mins, const vec3_t maxs)
 683 {
 684         int stackpos, sides;
 685         mnode_t *node, *stack[4096];
 686         if (R_CullBox(mins, maxs))
 687                 return true;
 688         if (cl.worldmodel == NULL)
 689                 return false;
 690         stackpos = 0;
 691         stack[stackpos++] = cl.worldmodel->nodes;
 692         while (stackpos)
 693         {
 694                 node = stack[--stackpos];
 695                 if (node->contents < 0)
 696                 {
 697                         if (((mleaf_t *)node)->visframe == r_framecount && ((mleaf_t *)node)->worldnodeframe == shadowframecount)
 698                                 return false;
 699                 }
 700                 else
 701                 {
 702                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 703                         if (sides & 2 && stackpos < 4096)
 704                                 stack[stackpos++] = node->children[1];
 705                         if (sides & 1 && stackpos < 4096)
 706                                 stack[stackpos++] = node->children[0];
 707                 }
 708         }
 709         return true;
 710 }
 711
 712
 713 void R_TestAndDrawShadowVolume(entity_render_t *ent, vec3_t lightorigin, float cullradius, float lightradius, vec3_t lightmins, vec3_t lightmaxs, vec3_t clipmins, vec3_t clipmaxs)
 714 {
 715         int i;
 716         vec3_t p, p2, temp, relativelightorigin, mins, maxs;
 717         float dist, projectdistance;
 718         // rough checks
 719         if (ent->model == NULL || ent->model->DrawShadowVolume == NULL || ent->alpha < 1 || (ent->effects & EF_ADDITIVE))
 720                 return;
 721         if (r_shadow_cull.integer)
 722         {
 723                 if (ent->maxs[0] < lightmins[0] || ent->mins[0] > lightmaxs[0]
 724                  || ent->maxs[1] < lightmins[1] || ent->mins[1] > lightmaxs[1]
 725                  || ent->maxs[2] < lightmins[2] || ent->mins[2] > lightmaxs[2]
 726                  || Light_CullBox(ent->mins, ent->maxs))
 727                         return;
 728         }
 729         if (r_shadow_cull.integer)
 730         {
 731                 projectdistance = cullradius;
 732                 // calculate projected bounding box and decide if it is on-screen
 733                 for (i = 0;i < 8;i++)
 734                 {
 735                         p2[0] = i & 1 ? ent->model->normalmaxs[0] : ent->model->normalmins[0];
 736                         p2[1] = i & 2 ? ent->model->normalmaxs[1] : ent->model->normalmins[1];
 737                         p2[2] = i & 4 ? ent->model->normalmaxs[2] : ent->model->normalmins[2];
 738                         Matrix4x4_Transform(&ent->matrix, p2, p);
 739                         VectorSubtract(p, lightorigin, temp);
 740                         dist = projectdistance / sqrt(DotProduct(temp, temp));
 741                         VectorMA(p, dist, temp, p2);
 742                         if (i)
 743                         {
 744                                 if (mins[0] > p[0]) mins[0] = p[0];if (maxs[0] < p[0]) maxs[0] = p[0];
 745                                 if (mins[1] > p[1]) mins[1] = p[1];if (maxs[1] < p[1]) maxs[1] = p[1];
 746                                 if (mins[2] > p[2]) mins[2] = p[2];if (maxs[2] < p[2]) maxs[2] = p[2];
 747                         }
 748                         else
 749                         {
 750                                 VectorCopy(p, mins);
 751                                 VectorCopy(p, maxs);
 752                         }
 753                         if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
 754                         if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
 755                         if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
 756                 }
 757                 if (mins[0] >= clipmaxs[0] || maxs[0] <= clipmins[0]
 758                  || mins[1] >= clipmaxs[1] || maxs[1] <= clipmins[1]
 759                  || mins[2] >= clipmaxs[2] || maxs[2] <= clipmins[2]
 760                  || LightAndVis_CullBox(mins, maxs))
 761                         return;
 762         }
 763         Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
 764         ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius);
 765 }
 766
 767 void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, worldlight_t *light);
 768
 769 #define SHADOWSPHERE_SEGMENTS 16
 770
 771 shadowmesh_t *shadowsphere;
 772 void R_CreateShadowSphere(void)
 773 {
 774         int i, j;
 775         vec3_t angles, angles2, angles3, angles4;
 776         float verts[12];
 777         shadowsphere = Mod_ShadowMesh_Begin(zonemempool, SHADOWSPHERE_SEGMENTS * SHADOWSPHERE_SEGMENTS / 2);
 778         for (i = 0;i < SHADOWSPHERE_SEGMENTS / 2;i++)
 779         {
 780                 for (j = 0;j < SHADOWSPHERE_SEGMENTS;j++)
 781                 {
 782                         angles[0] = (i * 360.0f / SHADOWSPHERE_SEGMENTS) + 90.0f;
 783                         angles[1] = j * 360.0f / SHADOWSPHERE_SEGMENTS;
 784                         angles[2] = 0;
 785                         VectorCopy(angles, angles2);
 786                         VectorCopy(angles, angles3);
 787                         VectorCopy(angles, angles4);
 788                         angles2[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 789                         angles3[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 790                         angles3[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 791                         angles4[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 792                         AngleVectorsFLU(angles, verts, NULL, NULL);
 793                         AngleVectorsFLU(angles2, verts + 9, NULL, NULL);
 794                         AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
 795                         AngleVectorsFLU(angles4, verts + 3, NULL, NULL);
 796                         VectorScale(&verts[0], 1.0f, &verts[0]);
 797                         VectorScale(&verts[3], 1.0f, &verts[3]);
 798                         VectorScale(&verts[6], 1.0f, &verts[6]);
 799                         VectorScale(&verts[9], 1.0f, &verts[9]);
 800                         Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
 801                 }
 802         }
 803         shadowsphere = Mod_ShadowMesh_Finish(zonemempool, shadowsphere);
 804 }
 805
 806
 807 void R_DrawShadowSphere(vec3_t origin, float cullradius, float lightradius)
 808 {
 809         shadowmesh_t *mesh;
 810         matrix4x4_t matrix;
 811         if (!shadowsphere)
 812                 R_CreateShadowSphere();
 813         Matrix4x4_CreateScale(&matrix, lightradius);
 814         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 815         R_Mesh_Matrix(&matrix);
 816         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 817         {
 818                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 819                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 820         }
 821         Matrix4x4_CreateScale(&matrix, -cullradius);
 822         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 823         R_Mesh_Matrix(&matrix);
 824         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 825         {
 826                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 827                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 828         }
 829 }
 830
 831 extern void R_Model_Brush_DrawLightForSurfaceList(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, msurface_t **surflist, int numsurfaces);
 832 void R_ShadowVolumeLighting (int visiblevolumes)
 833 {
 834         int i;
 835         entity_render_t *ent;
 836         int lnum;
 837         float f, lightradius, cullradius;
 838         vec3_t relativelightorigin, relativeeyeorigin, lightcolor, clipmins, clipmaxs;
 839         worldlight_t *wl;
 840         //mlight_t *sl;
 841         rdlight_t *rd;
 842         rmeshstate_t m;
 843         mleaf_t *leaf;
 844
 845         if (visiblevolumes)
 846         {
 847                 memset(&m, 0, sizeof(m));
 848                 m.blendfunc1 = GL_ONE;
 849                 m.blendfunc2 = GL_ONE;
 850                 if (r_shadow_realtime.integer >= 3)
 851                         m.depthdisable = true;
 852                 R_Mesh_State(&m);
 853                 qglDisable(GL_CULL_FACE);
 854                 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
 855         }
 856         else
 857                 R_Shadow_Stage_Begin();
 858         shadowframecount++;
 859         for (lnum = 0, wl = r_shadow_worldlightchain;wl;wl = wl->next, lnum++)
 860         {
 861                 if (d_lightstylevalue[wl->style] <= 0)
 862                         continue;
 863                 cullradius = wl->cullradius;
 864                 lightradius = wl->lightradius;
 865                 if (R_CullSphere(wl->origin, lightradius))
 866                         continue;
 867                 //if (R_CullBox(wl->mins, wl->maxs) || R_CullSphere(wl->origin, lightradius))
 868                 //      continue;
 869                 //if (VIS_CullBox(wl->mins, wl->maxs) || VIS_CullSphere(wl->origin, lightradius))
 870                 //      continue;
 871                 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
 872                         continue;
 873
 874                 if (cl.worldmodel != NULL)
 875                 {
 876                         for (i = 0;i < wl->numleafs;i++)
 877                                 if (wl->leafs[i]->visframe == r_framecount)
 878                                         break;
 879                         if (i == wl->numleafs)
 880                                 continue;
 881                         leaf = wl->leafs[i++];
 882                         VectorCopy(leaf->mins, clipmins);
 883                         VectorCopy(leaf->maxs, clipmaxs);
 884                         for (i++;i < wl->numleafs;i++)
 885                         {
 886                                 leaf = wl->leafs[i];
 887                                 if (leaf->visframe == r_framecount)
 888                                 {
 889                                         if (clipmins[0] > leaf->mins[0]) clipmins[0] = leaf->mins[0];
 890                                         if (clipmaxs[0] < leaf->maxs[0]) clipmaxs[0] = leaf->maxs[0];
 891                                         if (clipmins[1] > leaf->mins[1]) clipmins[1] = leaf->mins[1];
 892                                         if (clipmaxs[1] < leaf->maxs[1]) clipmaxs[1] = leaf->maxs[1];
 893                                         if (clipmins[2] > leaf->mins[2]) clipmins[2] = leaf->mins[2];
 894                                         if (clipmaxs[2] < leaf->maxs[2]) clipmaxs[2] = leaf->maxs[2];
 895                                 }
 896                         }
 897                         if (clipmins[0] < wl->mins[0]) clipmins[0] = wl->mins[0];
 898                         if (clipmins[1] < wl->mins[1]) clipmins[1] = wl->mins[1];
 899                         if (clipmins[2] < wl->mins[2]) clipmins[2] = wl->mins[2];
 900                         if (clipmaxs[0] > wl->maxs[0]) clipmaxs[0] = wl->maxs[0];
 901                         if (clipmaxs[1] > wl->maxs[1]) clipmaxs[1] = wl->maxs[1];
 902                         if (clipmaxs[2] > wl->maxs[2]) clipmaxs[2] = wl->maxs[2];
 903                 }
 904                 else
 905                 {
 906                         VectorCopy(wl->mins, clipmins);
 907                         VectorCopy(wl->maxs, clipmaxs);
 908                 }
 909
 910                 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, wl->origin, wl->cullradius))
 911                         continue;
 912
 913                 // mark the leafs we care about so only things in those leafs will matter
 914                 if (cl.worldmodel != NULL)
 915                         for (i = 0;i < wl->numleafs;i++)
 916                                 wl->leafs[i]->worldnodeframe = shadowframecount;
 917
 918                 f = d_lightstylevalue[wl->style] * (1.0f / 256.0f);
 919                 VectorScale(wl->light, f, lightcolor);
 920                 if (wl->selected)
 921                 {
 922                         f = 2 + sin(realtime * M_PI * 4.0);
 923                         VectorScale(lightcolor, f, lightcolor);
 924                 }
 925
 926                 if (!visiblevolumes)
 927                         R_Shadow_Stage_ShadowVolumes();
 928                 ent = &cl_entities[0].render;
 929                 if (wl->shadowvolume && r_shadow_staticworldlights.integer)
 930                         R_Shadow_DrawWorldLightShadowVolume(&ent->matrix, wl);
 931                 else
 932                         R_TestAndDrawShadowVolume(ent, wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
 933                 if (r_drawentities.integer)
 934                 {
 935                         for (i = 0;i < r_refdef.numentities;i++)
 936                         {
 937                                 ent = r_refdef.entities[i];
 938                                 if (ent->model)
 939                                         R_TestAndDrawShadowVolume(ent, wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
 940                         }
 941                 }
 942
 943                 if (!visiblevolumes)
 944                 {
 945                         R_Shadow_Stage_Light();
 946                         ent = &cl_entities[0].render;
 947                         if (ent->model && ent->model->DrawLight)
 948                         {
 949                                 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
 950                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 951                                 if (wl->numsurfaces)
 952                                         R_Model_Brush_DrawLightForSurfaceList(ent, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, wl->surfaces, wl->numsurfaces);
 953                                 else
 954                                         ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
 955                         }
 956                         if (r_drawentities.integer)
 957                         {
 958                                 for (i = 0;i < r_refdef.numentities;i++)
 959                                 {
 960                                         ent = r_refdef.entities[i];
 961                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
 962                                          && ent->maxs[0] >= wl->mins[0] && ent->mins[0] <= wl->maxs[0]
 963                                          && ent->maxs[1] >= wl->mins[1] && ent->mins[1] <= wl->maxs[1]
 964                                          && ent->maxs[2] >= wl->mins[2] && ent->mins[2] <= wl->maxs[2]
 965                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 966                                         {
 967                                                 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
 968                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 969                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
 970                                         }
 971                                 }
 972                         }
 973                 }
 974         }
 975         /*
 976         for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
 977         {
 978                 if (d_lightstylevalue[sl->style] <= 0)
 979                         continue;
 980                 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
 981                         continue;
 982                 cullradius = sl->cullradius;
 983                 lightradius = sl->lightradius;
 984                 if (VIS_CullBox(sl->mins, sl->maxs) || VIS_CullSphere(sl->origin, lightradius))
 985                         continue;
 986
 987                 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
 988                 VectorScale(sl->light, f, lightcolor);
 989
 990                 if (!visiblevolumes)
 991                         R_Shadow_Stage_ShadowVolumes();
 992                 if (sl->shadowvolume && r_shadow_staticworldlights.integer)
 993                         R_DrawWorldLightShadowVolume(&cl_entities[0].render.matrix, sl->shadowvolume);
 994                 else
 995                         R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius, lightradius);
 996                 if (r_drawentities.integer)
 997                 {
 998                         for (i = 0;i < r_refdef.numentities;i++)
 999                         {
1000                                 ent = r_refdef.entities[i];
1001                                 if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
1002                                  && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
1003                                  && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
1004                                  && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1005                                         R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius, lightradius);
1006                         }
1007                 }
1008
1009                 if (!visiblevolumes)
1010                 {
1011                         R_Shadow_Stage_Light();
1012                         ent = &cl_entities[0].render;
1013                         if (ent->model && ent->model->DrawLight)
1014                         {
1015                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
1016                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1017                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
1018                         }
1019                         if (r_drawentities.integer)
1020                         {
1021                                 for (i = 0;i < r_refdef.numentities;i++)
1022                                 {
1023                                         ent = r_refdef.entities[i];
1024                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
1025                                          && ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
1026                                          && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
1027                                          && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
1028                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1029                                         {
1030                                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
1031                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1032                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
1033                                         }
1034                                 }
1035                         }
1036                 }
1037         }
1038         */
1039         for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
1040         {
1041                 cullradius = rd->cullradius;
1042                 lightradius = rd->cullradius;
1043                 if (VIS_CullSphere(rd->origin, lightradius))
1044                         continue;
1045
1046                 VectorScale(rd->light, (1.0f / 8192.0f), lightcolor);
1047                 clipmins[0] = rd->origin[0] - cullradius;
1048                 clipmins[1] = rd->origin[1] - cullradius;
1049                 clipmins[2] = rd->origin[2] - cullradius;
1050                 clipmaxs[0] = rd->origin[0] + cullradius;
1051                 clipmaxs[1] = rd->origin[1] + cullradius;
1052                 clipmaxs[2] = rd->origin[2] + cullradius;
1053
1054                 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, rd->origin, rd->cullradius))
1055                         continue;
1056
1057                 if (!visiblevolumes)
1058                         R_Shadow_Stage_ShadowVolumes();
1059                 ent = &cl_entities[0].render;
1060                 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
1061                 if (r_drawentities.integer)
1062                 {
1063                         for (i = 0;i < r_refdef.numentities;i++)
1064                         {
1065                                 ent = r_refdef.entities[i];
1066                                 if (ent != rd->ent)
1067                                         R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
1068                         }
1069                 }
1070
1071                 if (!visiblevolumes)
1072                 {
1073                         R_Shadow_Stage_Light();
1074                         ent = &cl_entities[0].render;
1075                         if (ent->model && ent->model->DrawLight)
1076                         {
1077                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1078                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1079                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1080                         }
1081                         if (r_drawentities.integer)
1082                         {
1083                                 for (i = 0;i < r_refdef.numentities;i++)
1084                                 {
1085                                         ent = r_refdef.entities[i];
1086                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
1087                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1088                                         {
1089                                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1090                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1091                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1092                                         }
1093                                 }
1094                         }
1095                 }
1096         }
1097
1098         if (!visiblevolumes)
1099                 R_Shadow_Stage_End();
1100         qglEnable(GL_CULL_FACE);
1101         qglDisable(GL_SCISSOR_TEST);
1102 }
1103
1104 static void R_SetFrustum (void)
1105 {
1106         // LordHavoc: note to all quake engine coders, the special case for 90
1107         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
1108         // disabled as well.
1109
1110         // rotate VPN right by FOV_X/2 degrees
1111         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
1112         frustum[0].dist = DotProduct (r_origin, frustum[0].normal);
1113         PlaneClassify(&frustum[0]);
1114
1115         // rotate VPN left by FOV_X/2 degrees
1116         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
1117         frustum[1].dist = DotProduct (r_origin, frustum[1].normal);
1118         PlaneClassify(&frustum[1]);
1119
1120         // rotate VPN up by FOV_X/2 degrees
1121         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
1122         frustum[2].dist = DotProduct (r_origin, frustum[2].normal);
1123         PlaneClassify(&frustum[2]);
1124
1125         // rotate VPN down by FOV_X/2 degrees
1126         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
1127         frustum[3].dist = DotProduct (r_origin, frustum[3].normal);
1128         PlaneClassify(&frustum[3]);
1129 }
1130
1131 /*
1132 ===============
1133 R_SetupFrame
1134 ===============
1135 */
1136 static void R_SetupFrame (void)
1137 {
1138 // don't allow cheats in multiplayer
1139         if (cl.maxclients > 1)
1140         {
1141                 if (r_fullbright.integer != 0)
1142                         Cvar_Set ("r_fullbright", "0");
1143                 if (r_ambient.value != 0)
1144                         Cvar_Set ("r_ambient", "0");
1145         }
1146
1147         r_framecount++;
1148
1149 // build the transformation matrix for the given view angles
1150         VectorCopy (r_refdef.vieworg, r_origin);
1151
1152         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
1153
1154         R_AnimateLight ();
1155 }
1156
1157
1158 static void R_BlendView(void)
1159 {
1160         rmeshstate_t m;
1161         float r;
1162
1163         if (r_refdef.viewblend[3] < 0.01f)
1164                 return;
1165
1166         memset(&m, 0, sizeof(m));
1167         m.blendfunc1 = GL_SRC_ALPHA;
1168         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1169         m.depthdisable = true; // magic
1170         R_Mesh_Matrix(&r_identitymatrix);
1171         R_Mesh_State(&m);
1172
1173         r = 64000;
1174         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
1175         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
1176         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
1177         r *= 3;
1178         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
1179         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
1180         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
1181         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
1182         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
1183         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
1184         GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
1185         R_Mesh_Draw(3, 1, polygonelements);
1186 }
1187
1188 /*
1189 ================
1190 R_RenderView
1191
1192 r_refdef must be set before the first call
1193 ================
1194 */
1195 void R_RenderView (void)
1196 {
1197         entity_render_t *world;
1198         if (!r_refdef.entities/* || !cl.worldmodel*/)
1199                 return; //Host_Error ("R_RenderView: NULL worldmodel");
1200
1201         if (r_shadow_realtime.integer == 1)
1202         {
1203                 if (!gl_texturecubemap)
1204                 {
1205                         Con_Printf("Cubemap texture support not detected, turning off r_shadow_realtime\n");
1206                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1207                 }
1208                 else if (!gl_dot3arb)
1209                 {
1210                         Con_Printf("Bumpmapping support not detected, turning off r_shadow_realtime\n");
1211                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1212                 }
1213                 else if (!gl_stencil)
1214                 {
1215                         Con_Printf("Stencil not enabled, turning off r_shadow_realtime, please type vid_stencil 1;vid_bitsperpixel 32;vid_restart and try again\n");
1216                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1217                 }
1218                 else if (!gl_combine.integer)
1219                 {
1220                         Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadow_realtime\n");
1221                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1222                 }
1223         }
1224
1225         R_Shadow_UpdateLightingMode();
1226
1227         world = &cl_entities[0].render;
1228
1229         // FIXME: move to client
1230         R_MoveExplosions();
1231         R_TimeReport("mexplosion");
1232
1233         R_Textures_Frame();
1234         R_SetupFrame();
1235         R_SetFrustum();
1236         R_SetupFog();
1237         R_SkyStartFrame();
1238         R_BuildLightList();
1239         R_TimeReport("setup");
1240
1241         R_WorldVisibility(world);
1242         R_TimeReport("worldvis");
1243
1244         R_FarClip_Start(r_origin, vpn, 768.0f);
1245         R_MarkEntities();
1246         r_farclip = R_FarClip_Finish() + 256.0f;
1247         R_TimeReport("markentity");
1248
1249         GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1250         if (r_shadow_lightingmode > 0)
1251                 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1252         else
1253                 GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1254         GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1255         qglDepthFunc(GL_LEQUAL);
1256
1257         R_Mesh_Start();
1258         R_MeshQueue_BeginScene();
1259
1260         R_Shadow_UpdateWorldLightSelection();
1261
1262         if (R_DrawBrushModelsSky())
1263                 R_TimeReport("bmodelsky");
1264
1265         // must occur early because it can draw sky
1266         R_DrawWorld(world);
1267         R_TimeReport("world");
1268
1269         // don't let sound skip if going slow
1270         if (!intimerefresh && !r_speeds.integer)
1271                 S_ExtraUpdate ();
1272
1273         R_DrawModels(r_shadow_lightingmode > 0);
1274         R_TimeReport("models");
1275
1276         if (r_shadows.integer == 1 && r_shadow_lightingmode <= 0)
1277         {
1278                 R_DrawFakeShadows();
1279                 R_TimeReport("fakeshadow");
1280         }
1281
1282         if (r_shadow_lightingmode > 0)
1283         {
1284                 R_ShadowVolumeLighting(false);
1285                 R_TimeReport("dynlight");
1286         }
1287
1288         R_DrawParticles();
1289         R_TimeReport("particles");
1290
1291         R_DrawExplosions();
1292         R_TimeReport("explosions");
1293
1294         R_MeshQueue_RenderTransparent();
1295         R_TimeReport("drawtrans");
1296
1297         R_DrawCoronas();
1298         R_TimeReport("coronas");
1299
1300         R_DrawWorldCrosshair();
1301         R_TimeReport("crosshair");
1302
1303         R_BlendView();
1304         R_TimeReport("blendview");
1305
1306         R_MeshQueue_Render();
1307         R_MeshQueue_EndScene();
1308         if (r_shadow_realtime.integer >= 2)
1309         {
1310                 R_ShadowVolumeLighting(true);
1311                 R_TimeReport("shadowvolume");
1312         }
1313         R_Mesh_Finish();
1314         R_TimeReport("meshfinish");
1315 }
1316
1317 /*
1318 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1319 {
1320         int i;
1321         float *v, *c, f1, f2, diff[3];
1322         rmeshstate_t m;
1323         m.blendfunc1 = GL_SRC_ALPHA;
1324         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1325         R_Mesh_Matrix(&r_identitymatrix);
1326         R_Mesh_State(&m);
1327
1328         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1329         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1330         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1331         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1332         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1333         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1334         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1335         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1336         R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1337         if (fogenabled)
1338         {
1339                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1340                 {
1341                         VectorSubtract(v, r_origin, diff);
1342                         f2 = exp(fogdensity/DotProduct(diff, diff));
1343                         f1 = 1 - f2;
1344                         f2 *= r_colorscale;
1345                         c[0] = c[0] * f1 + fogcolor[0] * f2;
1346                         c[1] = c[1] * f1 + fogcolor[1] * f2;
1347                         c[2] = c[2] * f1 + fogcolor[2] * f2;
1348                 }
1349         }
1350         GL_UseColorArray();
1351         R_Mesh_Draw(8, 12);
1352 }
1353 */
1354
1355 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1356 {
1357         const entity_render_t *ent = calldata1;
1358         int i, element[24];
1359         float f1, f2, *c, diff[3];
1360         rmeshstate_t m;
1361         memset(&m, 0, sizeof(m));
1362         if (ent->flags & EF_ADDITIVE)
1363         {
1364                 m.blendfunc1 = GL_SRC_ALPHA;
1365                 m.blendfunc2 = GL_ONE;
1366         }
1367         else if (ent->alpha < 1)
1368         {
1369                 m.blendfunc1 = GL_SRC_ALPHA;
1370                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1371         }
1372         else
1373         {
1374                 m.blendfunc1 = GL_ONE;
1375                 m.blendfunc2 = GL_ZERO;
1376         }
1377         R_Mesh_Matrix(&ent->matrix);
1378         R_Mesh_State(&m);
1379
1380         element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1381         element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1382         element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1383         element[ 9] = 5;element[10] = 3;element[11] = 1;
1384         element[12] = 0;element[13] = 2;element[14] = 4;
1385         element[15] = 2;element[16] = 1;element[17] = 4;
1386         element[18] = 3;element[19] = 0;element[20] = 4;
1387         element[21] = 1;element[22] = 3;element[23] = 4;
1388         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
1389         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
1390         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
1391         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
1392         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
1393         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
1394         varray_color[ 0] = 0.00f * r_colorscale;varray_color[ 1] = 0.00f * r_colorscale;varray_color[ 2] = 0.50f * r_colorscale;varray_color[ 3] = ent->alpha;
1395         varray_color[ 4] = 0.00f * r_colorscale;varray_color[ 5] = 0.00f * r_colorscale;varray_color[ 6] = 0.50f * r_colorscale;varray_color[ 7] = ent->alpha;
1396         varray_color[ 8] = 0.00f * r_colorscale;varray_color[ 9] = 0.50f * r_colorscale;varray_color[10] = 0.00f * r_colorscale;varray_color[11] = ent->alpha;
1397         varray_color[12] = 0.00f * r_colorscale;varray_color[13] = 0.50f * r_colorscale;varray_color[14] = 0.00f * r_colorscale;varray_color[15] = ent->alpha;
1398         varray_color[16] = 0.50f * r_colorscale;varray_color[17] = 0.00f * r_colorscale;varray_color[18] = 0.00f * r_colorscale;varray_color[19] = ent->alpha;
1399         varray_color[20] = 0.50f * r_colorscale;varray_color[21] = 0.00f * r_colorscale;varray_color[22] = 0.00f * r_colorscale;varray_color[23] = ent->alpha;
1400         if (fogenabled)
1401         {
1402                 VectorSubtract(ent->origin, r_origin, diff);
1403                 f2 = exp(fogdensity/DotProduct(diff, diff));
1404                 f1 = 1 - f2;
1405                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1406                 {
1407                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1408                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1409                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1410                 }
1411         }
1412         else
1413         {
1414                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1415                 {
1416                         c[0] *= r_colorscale;
1417                         c[1] *= r_colorscale;
1418                         c[2] *= r_colorscale;
1419                 }
1420         }
1421         GL_UseColorArray();
1422         R_Mesh_Draw(6, 8, element);
1423 }
1424
1425 void R_DrawNoModel(entity_render_t *ent)
1426 {
1427         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1428                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1429         //else
1430         //      R_DrawNoModelCallback(ent, 0);
1431 }
1432
1433 void R_CalcBeamVerts (float *vert, const vec3_t org1, const vec3_t org2, float width)
1434 {
1435         vec3_t right1, right2, diff, normal;
1436
1437         VectorSubtract (org2, org1, normal);
1438         VectorNormalizeFast (normal);
1439
1440         // calculate 'right' vector for start
1441         VectorSubtract (r_origin, org1, diff);
1442         VectorNormalizeFast (diff);
1443         CrossProduct (normal, diff, right1);
1444
1445         // calculate 'right' vector for end
1446         VectorSubtract (r_origin, org2, diff);
1447         VectorNormalizeFast (diff);
1448         CrossProduct (normal, diff, right2);
1449
1450         vert[ 0] = org1[0] + width * right1[0];
1451         vert[ 1] = org1[1] + width * right1[1];
1452         vert[ 2] = org1[2] + width * right1[2];
1453         vert[ 4] = org1[0] - width * right1[0];
1454         vert[ 5] = org1[1] - width * right1[1];
1455         vert[ 6] = org1[2] - width * right1[2];
1456         vert[ 8] = org2[0] - width * right2[0];
1457         vert[ 9] = org2[1] - width * right2[1];
1458         vert[10] = org2[2] - width * right2[2];
1459         vert[12] = org2[0] + width * right2[0];
1460         vert[13] = org2[1] + width * right2[1];
1461         vert[14] = org2[2] + width * right2[2];
1462 }