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", "0"};
  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         entity_render_t *ent;
 515
 516         ent = &cl_entities[0].render;
 517         Matrix4x4_CreateIdentity(&ent->matrix);
 518         Matrix4x4_CreateIdentity(&ent->inversematrix);
 519
 520         if (cl.worldmodel)
 521                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 522
 523         if (!r_drawentities.integer)
 524                 return;
 525
 526         for (i = 0;i < r_refdef.numentities;i++)
 527         {
 528                 ent = r_refdef.entities[i];
 529                 Mod_CheckLoaded(ent->model);
 530                 // some of the renderer still relies on origin...
 531                 Matrix4x4_OriginFromMatrix(&ent->matrix, ent->origin);
 532                 // some of the renderer still relies on scale...
 533                 ent->scale = Matrix4x4_ScaleFromMatrix(&ent->matrix);
 534                 R_LerpAnimation(ent);
 535                 R_UpdateEntLights(ent);
 536                 if ((chase_active.integer || !(ent->flags & RENDER_EXTERIORMODEL))
 537                  && !VIS_CullSphere(ent->origin, (ent->model != NULL ? ent->model->radius : 16) * ent->scale)
 538                  && !VIS_CullBox(ent->mins, ent->maxs))
 539                 {
 540                         ent->visframe = r_framecount;
 541                         R_FarClip_Box(ent->mins, ent->maxs);
 542                 }
 543         }
 544 }
 545
 546 // only used if skyrendermasked, and normally returns false
 547 int R_DrawBrushModelsSky (void)
 548 {
 549         int i, sky;
 550         entity_render_t *ent;
 551
 552         if (!r_drawentities.integer)
 553                 return false;
 554
 555         sky = false;
 556         for (i = 0;i < r_refdef.numentities;i++)
 557         {
 558                 ent = r_refdef.entities[i];
 559                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 560                 {
 561                         ent->model->DrawSky(ent);
 562                         sky = true;
 563                 }
 564         }
 565         return sky;
 566 }
 567
 568 /*
 569 =============
 570 R_DrawViewModel
 571 =============
 572 */
 573 /*
 574 void R_DrawViewModel (void)
 575 {
 576         entity_render_t *ent;
 577
 578         // FIXME: move these checks to client
 579         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 580                 return;
 581
 582         ent = &cl.viewent.render;
 583         Mod_CheckLoaded(ent->model);
 584         R_LerpAnimation(ent);
 585         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 586         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 587         R_UpdateEntLights(ent);
 588         ent->model->Draw(ent);
 589 }
 590 */
 591
 592 void R_DrawNoModel(entity_render_t *ent);
 593 void R_DrawModels ()
 594 {
 595         int i;
 596         entity_render_t *ent;
 597
 598         if (!r_drawentities.integer)
 599                 return;
 600
 601         for (i = 0;i < r_refdef.numentities;i++)
 602         {
 603                 ent = r_refdef.entities[i];
 604                 if (ent->visframe == r_framecount)
 605                 {
 606                         if (ent->model && ent->model->Draw != NULL)
 607                                 ent->model->Draw(ent);
 608                         else
 609                                 R_DrawNoModel(ent);
 610                 }
 611         }
 612 }
 613
 614 void R_DrawFakeShadows (void)
 615 {
 616         int i;
 617         entity_render_t *ent;
 618
 619         ent = &cl_entities[0].render;
 620         if (ent->model && ent->model->DrawFakeShadow)
 621                 ent->model->DrawFakeShadow(ent);
 622
 623         if (!r_drawentities.integer)
 624                 return;
 625         for (i = 0;i < r_refdef.numentities;i++)
 626         {
 627                 ent = r_refdef.entities[i];
 628                 if ((ent->flags & RENDER_SHADOW) && ent->model && ent->model->DrawFakeShadow)
 629                         ent->model->DrawFakeShadow(ent);
 630         }
 631 }
 632
 633 #include "r_shadow.h"
 634
 635 int shadowframecount = 0;
 636
 637 int Light_CullBox(const vec3_t mins, const vec3_t maxs)
 638 {
 639         int stackpos, sides;
 640         mnode_t *node, *stack[4096];
 641         if (cl.worldmodel == NULL)
 642                 return false;
 643         stackpos = 0;
 644         stack[stackpos++] = cl.worldmodel->nodes;
 645         while (stackpos)
 646         {
 647                 node = stack[--stackpos];
 648                 if (node->contents < 0)
 649                 {
 650                         if (((mleaf_t *)node)->worldnodeframe == shadowframecount)
 651                                 return false;
 652                 }
 653                 else
 654                 {
 655                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 656                         if (sides & 2 && stackpos < 4096)
 657                                 stack[stackpos++] = node->children[1];
 658                         if (sides & 1 && stackpos < 4096)
 659                                 stack[stackpos++] = node->children[0];
 660                 }
 661         }
 662         return true;
 663 }
 664
 665 int LightAndVis_CullBox(const vec3_t mins, const vec3_t maxs)
 666 {
 667         int stackpos, sides;
 668         mnode_t *node, *stack[4096];
 669         if (R_CullBox(mins, maxs))
 670                 return true;
 671         if (cl.worldmodel == NULL)
 672                 return false;
 673         stackpos = 0;
 674         stack[stackpos++] = cl.worldmodel->nodes;
 675         while (stackpos)
 676         {
 677                 node = stack[--stackpos];
 678                 if (node->contents < 0)
 679                 {
 680                         if (((mleaf_t *)node)->visframe == r_framecount && ((mleaf_t *)node)->worldnodeframe == shadowframecount)
 681                                 return false;
 682                 }
 683                 else
 684                 {
 685                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 686                         if (sides & 2 && stackpos < 4096)
 687                                 stack[stackpos++] = node->children[1];
 688                         if (sides & 1 && stackpos < 4096)
 689                                 stack[stackpos++] = node->children[0];
 690                 }
 691         }
 692         return true;
 693 }
 694
 695 int LightAndVis_CullPointCloud(int numpoints, const float *points)
 696 {
 697         int i;
 698         const float *p;
 699         int stackpos, sides;
 700         mnode_t *node, *stack[4096];
 701         //if (R_CullBox(mins, maxs))
 702         //      return true;
 703         if (cl.worldmodel == NULL)
 704                 return false;
 705         stackpos = 0;
 706         stack[stackpos++] = cl.worldmodel->nodes;
 707         while (stackpos)
 708         {
 709                 node = stack[--stackpos];
 710                 if (node->contents < 0)
 711                 {
 712                         if (((mleaf_t *)node)->visframe == r_framecount && ((mleaf_t *)node)->worldnodeframe == shadowframecount)
 713                                 return false;
 714                 }
 715                 else
 716                 {
 717                         sides = 0;
 718                         for (i = 0, p = points;i < numpoints && sides != 3;i++, p += 3)
 719                         {
 720                                 if (DotProduct(p, node->plane->normal) < node->plane->dist)
 721                                         sides |= 1;
 722                                 else
 723                                         sides |= 2;
 724                         }
 725                         if (sides & 2 && stackpos < 4096)
 726                                 stack[stackpos++] = node->children[1];
 727                         if (sides & 1 && stackpos < 4096)
 728                                 stack[stackpos++] = node->children[0];
 729                 }
 730         }
 731         return true;
 732 }
 733
 734
 735 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)
 736 {
 737         vec3_t relativelightorigin;
 738         #if 0
 739         int i;
 740         vec3_t temp;
 741         float dist, projectdistance;
 742         float points[16][3];
 743         #endif
 744         // rough checks
 745         if (!(ent->flags & RENDER_SHADOW) || ent->model == NULL || ent->model->DrawShadowVolume == NULL)
 746                 return;
 747         if (r_shadow_cull.integer)
 748         {
 749                 if (ent->maxs[0] < lightmins[0] || ent->mins[0] > lightmaxs[0]
 750                  || ent->maxs[1] < lightmins[1] || ent->mins[1] > lightmaxs[1]
 751                  || ent->maxs[2] < lightmins[2] || ent->mins[2] > lightmaxs[2]
 752                  || Light_CullBox(ent->mins, ent->maxs))
 753                         return;
 754         }
 755         #if 0
 756         if (r_shadow_cull.integer)
 757         {
 758                 projectdistance = cullradius;
 759                 // calculate projected bounding box and decide if it is on-screen
 760                 for (i = 0;i < 8;i++)
 761                 {
 762                         temp[0] = i & 1 ? ent->model->normalmaxs[0] : ent->model->normalmins[0];
 763                         temp[1] = i & 2 ? ent->model->normalmaxs[1] : ent->model->normalmins[1];
 764                         temp[2] = i & 4 ? ent->model->normalmaxs[2] : ent->model->normalmins[2];
 765                         Matrix4x4_Transform(&ent->matrix, temp, points[i]);
 766                         VectorSubtract(points[i], lightorigin, temp);
 767                         dist = projectdistance / sqrt(DotProduct(temp, temp));
 768                         VectorMA(points[i], dist, temp, points[i+8]);
 769                 }
 770                 if (LightAndVis_CullPointCloud(16, points[0]))
 771                         return;
 772                 /*
 773                 for (i = 0;i < 8;i++)
 774                 {
 775                         p2[0] = i & 1 ? ent->model->normalmaxs[0] : ent->model->normalmins[0];
 776                         p2[1] = i & 2 ? ent->model->normalmaxs[1] : ent->model->normalmins[1];
 777                         p2[2] = i & 4 ? ent->model->normalmaxs[2] : ent->model->normalmins[2];
 778                         Matrix4x4_Transform(&ent->matrix, p2, p);
 779                         VectorSubtract(p, lightorigin, temp);
 780                         dist = projectdistance / sqrt(DotProduct(temp, temp));
 781                         VectorMA(p, dist, temp, p2);
 782                         if (i)
 783                         {
 784                                 if (mins[0] > p[0]) mins[0] = p[0];if (maxs[0] < p[0]) maxs[0] = p[0];
 785                                 if (mins[1] > p[1]) mins[1] = p[1];if (maxs[1] < p[1]) maxs[1] = p[1];
 786                                 if (mins[2] > p[2]) mins[2] = p[2];if (maxs[2] < p[2]) maxs[2] = p[2];
 787                         }
 788                         else
 789                         {
 790                                 VectorCopy(p, mins);
 791                                 VectorCopy(p, maxs);
 792                         }
 793                         if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
 794                         if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
 795                         if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
 796                 }
 797                 if (mins[0] >= clipmaxs[0] || maxs[0] <= clipmins[0]
 798                  || mins[1] >= clipmaxs[1] || maxs[1] <= clipmins[1]
 799                  || mins[2] >= clipmaxs[2] || maxs[2] <= clipmins[2]
 800                  || LightAndVis_CullBox(mins, maxs))
 801                         return;
 802                 */
 803         }
 804         #endif
 805         Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
 806         ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius);
 807 }
 808
 809 void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, worldlight_t *light);
 810
 811 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, const matrix4x4_t *matrix_modeltofilter, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz);
 812 void R_ShadowVolumeLighting (int visiblevolumes)
 813 {
 814         int i;
 815         entity_render_t *ent;
 816         int lnum;
 817         float f, lightradius, cullradius;
 818         vec3_t relativelightorigin, relativeeyeorigin, lightcolor, clipmins, clipmaxs;
 819         worldlight_t *wl;
 820         rdlight_t *rd;
 821         rmeshstate_t m;
 822         mleaf_t *leaf;
 823         matrix4x4_t matrix;
 824         matrix4x4_t matrix_worldtofilter, matrix_worldtoattenuationxyz, matrix_worldtoattenuationz;
 825         matrix4x4_t matrix_modeltofilter, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz;
 826
 827         if (visiblevolumes)
 828         {
 829                 memset(&m, 0, sizeof(m));
 830                 m.blendfunc1 = GL_ONE;
 831                 m.blendfunc2 = GL_ONE;
 832                 if (r_shadow_realtime.integer >= 3)
 833                         m.depthdisable = true;
 834                 R_Mesh_State(&m);
 835                 qglDisable(GL_CULL_FACE);
 836                 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
 837         }
 838         else
 839                 R_Shadow_Stage_Begin();
 840         shadowframecount++;
 841         for (lnum = 0, wl = r_shadow_worldlightchain;wl;wl = wl->next, lnum++)
 842         {
 843                 if (d_lightstylevalue[wl->style] <= 0)
 844                         continue;
 845                 if (R_CullBox(wl->mins, wl->maxs))
 846                 //if (R_CullSphere(wl->origin, cullradius))
 847                         continue;
 848                 //if (R_CullBox(wl->mins, wl->maxs) || R_CullSphere(wl->origin, lightradius))
 849                 //      continue;
 850                 //if (VIS_CullBox(wl->mins, wl->maxs) || VIS_CullSphere(wl->origin, lightradius))
 851                 //      continue;
 852                 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
 853                         continue;
 854
 855                 cullradius = wl->cullradius;
 856                 lightradius = wl->lightradius;
 857
 858                 if (cl.worldmodel != NULL)
 859                 {
 860                         for (i = 0;i < wl->numleafs;i++)
 861                                 if (wl->leafs[i]->visframe == r_framecount)
 862                                         break;
 863                         if (i == wl->numleafs)
 864                                 continue;
 865                         leaf = wl->leafs[i++];
 866                         VectorCopy(leaf->mins, clipmins);
 867                         VectorCopy(leaf->maxs, clipmaxs);
 868                         for (;i < wl->numleafs;i++)
 869                         {
 870                                 leaf = wl->leafs[i];
 871                                 if (leaf->visframe == r_framecount)
 872                                 {
 873                                         if (clipmins[0] > leaf->mins[0]) clipmins[0] = leaf->mins[0];
 874                                         if (clipmaxs[0] < leaf->maxs[0]) clipmaxs[0] = leaf->maxs[0];
 875                                         if (clipmins[1] > leaf->mins[1]) clipmins[1] = leaf->mins[1];
 876                                         if (clipmaxs[1] < leaf->maxs[1]) clipmaxs[1] = leaf->maxs[1];
 877                                         if (clipmins[2] > leaf->mins[2]) clipmins[2] = leaf->mins[2];
 878                                         if (clipmaxs[2] < leaf->maxs[2]) clipmaxs[2] = leaf->maxs[2];
 879                                 }
 880                         }
 881                         if (clipmins[0] < wl->mins[0]) clipmins[0] = wl->mins[0];
 882                         if (clipmaxs[0] > wl->maxs[0]) clipmaxs[0] = wl->maxs[0];
 883                         if (clipmins[1] < wl->mins[1]) clipmins[1] = wl->mins[1];
 884                         if (clipmaxs[1] > wl->maxs[1]) clipmaxs[1] = wl->maxs[1];
 885                         if (clipmins[2] < wl->mins[2]) clipmins[2] = wl->mins[2];
 886                         if (clipmaxs[2] > wl->maxs[2]) clipmaxs[2] = wl->maxs[2];
 887                 }
 888                 else
 889                 {
 890                         VectorCopy(wl->mins, clipmins);
 891                         VectorCopy(wl->maxs, clipmaxs);
 892                 }
 893
 894                 //if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, wl->origin, wl->cullradius))
 895                 if (R_CullBox(clipmins, clipmaxs) || R_Shadow_ScissorForBBox(clipmins, clipmaxs))
 896                         continue;
 897
 898                 // mark the leafs we care about so only things in those leafs will matter
 899                 if (cl.worldmodel != NULL)
 900                         for (i = 0;i < wl->numleafs;i++)
 901                                 wl->leafs[i]->worldnodeframe = shadowframecount;
 902
 903                 f = d_lightstylevalue[wl->style] * (1.0f / 256.0f);
 904                 VectorScale(wl->light, f, lightcolor);
 905                 if (wl->selected)
 906                 {
 907                         f = 2 + sin(realtime * M_PI * 4.0);
 908                         VectorScale(lightcolor, f, lightcolor);
 909                 }
 910
 911                 if (wl->castshadows)
 912                 {
 913                         if (!visiblevolumes)
 914                                 R_Shadow_Stage_ShadowVolumes();
 915                         ent = &cl_entities[0].render;
 916                         if (wl->shadowvolume && r_shadow_staticworldlights.integer)
 917                                 R_Shadow_DrawWorldLightShadowVolume(&ent->matrix, wl);
 918                         else
 919                                 R_TestAndDrawShadowVolume(ent, wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
 920                         if (r_drawentities.integer)
 921                                 for (i = 0;i < r_refdef.numentities;i++)
 922                                         R_TestAndDrawShadowVolume(r_refdef.entities[i], wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
 923                 }
 924
 925                 if (!visiblevolumes)
 926                 {
 927                         if (wl->castshadows)
 928                                 R_Shadow_Stage_LightWithShadows();
 929                         else
 930                                 R_Shadow_Stage_LightWithoutShadows();
 931
 932                         // calculate world to filter matrix
 933                         Matrix4x4_CreateFromQuakeEntity(&matrix, wl->origin[0], wl->origin[1], wl->origin[2], wl->angles[0], wl->angles[1], wl->angles[2], lightradius);
 934                         Matrix4x4_Invert_Simple(&matrix_worldtofilter, &matrix);
 935                         // calculate world to attenuationxyz/xy matrix
 936                         Matrix4x4_CreateFromQuakeEntity(&matrix, 0.5, 0.5, 0.5, 0, 0, 0, 0.5);
 937                         Matrix4x4_Concat(&matrix_worldtoattenuationxyz, &matrix, &matrix_worldtofilter);
 938                         // calculate world to attenuationz matrix
 939                         matrix.m[0][0] = 0;matrix.m[0][1] = 0;matrix.m[0][2] = 0.5;matrix.m[0][3] = 0.5;
 940                         matrix.m[1][0] = 0;matrix.m[1][1] = 0;matrix.m[1][2] = 0  ;matrix.m[1][3] = 0.5;
 941                         matrix.m[2][0] = 0;matrix.m[2][1] = 0;matrix.m[2][2] = 0  ;matrix.m[2][3] = 0.5;
 942                         matrix.m[3][0] = 0;matrix.m[3][1] = 0;matrix.m[3][2] = 0  ;matrix.m[3][3] = 1;
 943                         Matrix4x4_Concat(&matrix_worldtoattenuationz, &matrix, &matrix_worldtofilter);
 944
 945                         ent = &cl_entities[0].render;
 946                         if (ent->model && ent->model->DrawLight)
 947                         {
 948                                 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
 949                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 950                                 Matrix4x4_Concat(&matrix_modeltofilter, &matrix_worldtofilter, &ent->matrix);
 951                                 Matrix4x4_Concat(&matrix_modeltoattenuationxyz, &matrix_worldtoattenuationxyz, &ent->matrix);
 952                                 Matrix4x4_Concat(&matrix_modeltoattenuationz, &matrix_worldtoattenuationz, &ent->matrix);
 953                                 if (wl->numsurfaces)
 954                                         R_Model_Brush_DrawLightForSurfaceList(ent, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, wl->surfaces, wl->numsurfaces, &matrix_modeltofilter, &matrix_modeltoattenuationxyz, &matrix_modeltoattenuationz);
 955                                 else
 956                                         ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor, &matrix_modeltofilter, &matrix_modeltoattenuationxyz, &matrix_modeltoattenuationz);
 957                         }
 958                         if (r_drawentities.integer)
 959                         {
 960                                 for (i = 0;i < r_refdef.numentities;i++)
 961                                 {
 962                                         ent = r_refdef.entities[i];
 963                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
 964                                          && ent->maxs[0] >= clipmins[0] && ent->mins[0] <= clipmaxs[0]
 965                                          && ent->maxs[1] >= clipmins[1] && ent->mins[1] <= clipmaxs[1]
 966                                          && ent->maxs[2] >= clipmins[2] && ent->mins[2] <= clipmaxs[2]
 967                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 968                                         {
 969                                                 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
 970                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 971                                                 Matrix4x4_Concat(&matrix_modeltofilter, &matrix_worldtofilter, &ent->matrix);
 972                                                 Matrix4x4_Concat(&matrix_modeltoattenuationxyz, &matrix_worldtoattenuationxyz, &ent->matrix);
 973                                                 Matrix4x4_Concat(&matrix_modeltoattenuationz, &matrix_worldtoattenuationz, &ent->matrix);
 974                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor, &matrix_modeltofilter, &matrix_modeltoattenuationxyz, &matrix_modeltoattenuationz);
 975                                         }
 976                                 }
 977                         }
 978                 }
 979         }
 980         for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
 981         {
 982                 lightradius = rd->cullradius;
 983                 clipmins[0] = rd->origin[0] - lightradius;
 984                 clipmins[1] = rd->origin[1] - lightradius;
 985                 clipmins[2] = rd->origin[2] - lightradius;
 986                 clipmaxs[0] = rd->origin[0] + lightradius;
 987                 clipmaxs[1] = rd->origin[1] + lightradius;
 988                 clipmaxs[2] = rd->origin[2] + lightradius;
 989                 if (VIS_CullBox(clipmins, clipmaxs))
 990                         continue;
 991
 992                 //if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, rd->origin, cullradius))
 993                 if (R_Shadow_ScissorForBBox(clipmins, clipmaxs))
 994                         continue;
 995
 996                 if (!visiblevolumes)
 997                         R_Shadow_Stage_ShadowVolumes();
 998
 999                 cullradius = RadiusFromBoundsAndOrigin(clipmins, clipmaxs, rd->origin);
1000                 VectorScale(rd->light, (1.0f / 4096.0f), lightcolor);
1001
1002                 ent = &cl_entities[0].render;
1003                 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
1004                 if (r_drawentities.integer)
1005                 {
1006                         for (i = 0;i < r_refdef.numentities;i++)
1007                         {
1008                                 ent = r_refdef.entities[i];
1009                                 if (ent != rd->ent)
1010                                         R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
1011                         }
1012                 }
1013
1014                 if (!visiblevolumes)
1015                 {
1016                         R_Shadow_Stage_LightWithShadows();
1017
1018                         // calculate world to filter matrix
1019                         Matrix4x4_CreateFromQuakeEntity(&matrix, rd->origin[0], rd->origin[1], rd->origin[2], 0, 0, 0, lightradius);
1020                         Matrix4x4_Invert_Simple(&matrix_worldtofilter, &matrix);
1021                         // calculate world to attenuationxyz/xy matrix
1022                         Matrix4x4_CreateFromQuakeEntity(&matrix, 0.5, 0.5, 0.5, 0, 0, 0, 0.5);
1023                         Matrix4x4_Concat(&matrix_worldtoattenuationxyz, &matrix, &matrix_worldtofilter);
1024                         // calculate world to attenuationz matrix
1025                         matrix.m[0][0] = 0;matrix.m[0][1] = 0;matrix.m[0][2] = 0.5;matrix.m[0][3] = 0.5;
1026                         matrix.m[1][0] = 0;matrix.m[1][1] = 0;matrix.m[1][2] = 0  ;matrix.m[1][3] = 0.5;
1027                         matrix.m[2][0] = 0;matrix.m[2][1] = 0;matrix.m[2][2] = 0  ;matrix.m[2][3] = 0.5;
1028                         matrix.m[3][0] = 0;matrix.m[3][1] = 0;matrix.m[3][2] = 0  ;matrix.m[3][3] = 1;
1029                         Matrix4x4_Concat(&matrix_worldtoattenuationz, &matrix, &matrix_worldtofilter);
1030
1031                         ent = &cl_entities[0].render;
1032                         if (ent->model && ent->model->DrawLight)
1033                         {
1034                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1035                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1036                                 Matrix4x4_Concat(&matrix_modeltofilter, &matrix_worldtofilter, &ent->matrix);
1037                                 Matrix4x4_Concat(&matrix_modeltoattenuationxyz, &matrix_worldtoattenuationxyz, &ent->matrix);
1038                                 Matrix4x4_Concat(&matrix_modeltoattenuationz, &matrix_worldtoattenuationz, &ent->matrix);
1039                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor, &matrix_modeltofilter, &matrix_modeltoattenuationxyz, &matrix_modeltoattenuationz);
1040                         }
1041                         if (r_drawentities.integer)
1042                         {
1043                                 for (i = 0;i < r_refdef.numentities;i++)
1044                                 {
1045                                         ent = r_refdef.entities[i];
1046                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
1047                                          && ent->maxs[0] >= clipmins[0] && ent->mins[0] <= clipmaxs[0]
1048                                          && ent->maxs[1] >= clipmins[1] && ent->mins[1] <= clipmaxs[1]
1049                                          && ent->maxs[2] >= clipmins[2] && ent->mins[2] <= clipmaxs[2]
1050                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1051                                         {
1052                                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1053                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1054                                                 Matrix4x4_Concat(&matrix_modeltofilter, &matrix_worldtofilter, &ent->matrix);
1055                                                 Matrix4x4_Concat(&matrix_modeltoattenuationxyz, &matrix_worldtoattenuationxyz, &ent->matrix);
1056                                                 Matrix4x4_Concat(&matrix_modeltoattenuationz, &matrix_worldtoattenuationz, &ent->matrix);
1057                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor, &matrix_modeltofilter, &matrix_modeltoattenuationxyz, &matrix_modeltoattenuationz);
1058                                         }
1059                                 }
1060                         }
1061                 }
1062         }
1063
1064         if (!visiblevolumes)
1065                 R_Shadow_Stage_End();
1066         qglEnable(GL_CULL_FACE);
1067         qglDisable(GL_SCISSOR_TEST);
1068 }
1069
1070 static void R_SetFrustum (void)
1071 {
1072         // LordHavoc: note to all quake engine coders, the special case for 90
1073         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
1074         // disabled as well.
1075
1076         // rotate VPN right by FOV_X/2 degrees
1077         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
1078         frustum[0].dist = DotProduct (r_origin, frustum[0].normal);
1079         PlaneClassify(&frustum[0]);
1080
1081         // rotate VPN left by FOV_X/2 degrees
1082         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
1083         frustum[1].dist = DotProduct (r_origin, frustum[1].normal);
1084         PlaneClassify(&frustum[1]);
1085
1086         // rotate VPN up by FOV_X/2 degrees
1087         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
1088         frustum[2].dist = DotProduct (r_origin, frustum[2].normal);
1089         PlaneClassify(&frustum[2]);
1090
1091         // rotate VPN down by FOV_X/2 degrees
1092         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
1093         frustum[3].dist = DotProduct (r_origin, frustum[3].normal);
1094         PlaneClassify(&frustum[3]);
1095 }
1096
1097 /*
1098 ===============
1099 R_SetupFrame
1100 ===============
1101 */
1102 static void R_SetupFrame (void)
1103 {
1104 // don't allow cheats in multiplayer
1105         if (cl.maxclients > 1)
1106         {
1107                 if (r_fullbright.integer != 0)
1108                         Cvar_Set ("r_fullbright", "0");
1109                 if (r_ambient.value != 0)
1110                         Cvar_Set ("r_ambient", "0");
1111         }
1112
1113         r_framecount++;
1114
1115 // build the transformation matrix for the given view angles
1116         VectorCopy (r_refdef.vieworg, r_origin);
1117
1118         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
1119
1120         R_AnimateLight ();
1121 }
1122
1123
1124 static void R_BlendView(void)
1125 {
1126         rmeshstate_t m;
1127         float r;
1128
1129         if (r_refdef.viewblend[3] < 0.01f)
1130                 return;
1131
1132         memset(&m, 0, sizeof(m));
1133         m.blendfunc1 = GL_SRC_ALPHA;
1134         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1135         m.depthdisable = true; // magic
1136         R_Mesh_Matrix(&r_identitymatrix);
1137         R_Mesh_State(&m);
1138
1139         r = 64000;
1140         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
1141         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
1142         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
1143         r *= 3;
1144         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
1145         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
1146         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
1147         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
1148         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
1149         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
1150         GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
1151         R_Mesh_Draw(3, 1, polygonelements);
1152 }
1153
1154 /*
1155 ================
1156 R_RenderView
1157
1158 r_refdef must be set before the first call
1159 ================
1160 */
1161 extern void R_DrawLightningBeams (void);
1162 void R_RenderView (void)
1163 {
1164         entity_render_t *world;
1165         if (!r_refdef.entities/* || !cl.worldmodel*/)
1166                 return; //Host_Error ("R_RenderView: NULL worldmodel");
1167
1168         if (r_shadow_realtime.integer == 1)
1169         {
1170                 if (!gl_texturecubemap)
1171                 {
1172                         Con_Printf("Cubemap texture support not detected, turning off r_shadow_realtime\n");
1173                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1174                 }
1175                 else if (!gl_dot3arb)
1176                 {
1177                         Con_Printf("Bumpmapping support not detected, turning off r_shadow_realtime\n");
1178                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1179                 }
1180                 else if (!gl_stencil)
1181                 {
1182                         Con_Printf("Stencil not enabled, turning off r_shadow_realtime, please type vid_stencil 1;vid_bitsperpixel 32;vid_restart and try again\n");
1183                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1184                 }
1185                 else if (!gl_combine.integer)
1186                 {
1187                         Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadow_realtime\n");
1188                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1189                 }
1190         }
1191
1192         R_Shadow_UpdateLightingMode();
1193
1194         world = &cl_entities[0].render;
1195
1196         // FIXME: move to client
1197         R_MoveExplosions();
1198         R_TimeReport("mexplosion");
1199
1200         R_Textures_Frame();
1201         R_SetupFrame();
1202         R_SetFrustum();
1203         R_SetupFog();
1204         R_SkyStartFrame();
1205         R_BuildLightList();
1206         R_TimeReport("setup");
1207
1208         R_WorldVisibility(world);
1209         R_TimeReport("worldvis");
1210
1211         R_FarClip_Start(r_origin, vpn, 768.0f);
1212         R_MarkEntities();
1213         r_farclip = R_FarClip_Finish() + 256.0f;
1214         R_TimeReport("markentity");
1215
1216         GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1217         if (r_shadow_lightingmode > 0)
1218                 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1219         else
1220                 GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1221         GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1222         qglDepthFunc(GL_LEQUAL);
1223
1224         R_Mesh_Start();
1225         R_MeshQueue_BeginScene();
1226
1227         R_Shadow_UpdateWorldLightSelection();
1228
1229         if (R_DrawBrushModelsSky())
1230                 R_TimeReport("bmodelsky");
1231
1232         // must occur early because it can draw sky
1233         R_DrawWorld(world);
1234         R_TimeReport("world");
1235
1236         // don't let sound skip if going slow
1237         if (!intimerefresh && !r_speeds.integer)
1238                 S_ExtraUpdate ();
1239
1240         R_DrawModels(r_shadow_lightingmode > 0);
1241         R_TimeReport("models");
1242
1243         if (r_shadows.integer == 1 && r_shadow_lightingmode <= 0)
1244         {
1245                 R_DrawFakeShadows();
1246                 R_TimeReport("fakeshadow");
1247         }
1248
1249         if (r_shadow_lightingmode > 0)
1250         {
1251                 R_ShadowVolumeLighting(false);
1252                 R_TimeReport("dynlight");
1253         }
1254
1255         R_DrawLightningBeams();
1256         R_TimeReport("lightning");
1257
1258         R_DrawParticles();
1259         R_TimeReport("particles");
1260
1261         R_DrawExplosions();
1262         R_TimeReport("explosions");
1263
1264         R_MeshQueue_RenderTransparent();
1265         R_TimeReport("drawtrans");
1266
1267         R_DrawCoronas();
1268         R_TimeReport("coronas");
1269
1270         R_DrawWorldCrosshair();
1271         R_TimeReport("crosshair");
1272
1273         R_BlendView();
1274         R_TimeReport("blendview");
1275
1276         R_MeshQueue_Render();
1277         R_MeshQueue_EndScene();
1278         if (r_shadow_realtime.integer >= 2)
1279         {
1280                 R_ShadowVolumeLighting(true);
1281                 R_TimeReport("shadowvolume");
1282         }
1283         R_Mesh_Finish();
1284         R_TimeReport("meshfinish");
1285 }
1286
1287 /*
1288 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1289 {
1290         int i;
1291         float *v, *c, f1, f2, diff[3];
1292         rmeshstate_t m;
1293         m.blendfunc1 = GL_SRC_ALPHA;
1294         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1295         R_Mesh_Matrix(&r_identitymatrix);
1296         R_Mesh_State(&m);
1297
1298         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1299         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1300         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1301         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1302         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1303         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1304         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1305         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1306         R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1307         if (fogenabled)
1308         {
1309                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1310                 {
1311                         VectorSubtract(v, r_origin, diff);
1312                         f2 = exp(fogdensity/DotProduct(diff, diff));
1313                         f1 = 1 - f2;
1314                         f2 *= r_colorscale;
1315                         c[0] = c[0] * f1 + fogcolor[0] * f2;
1316                         c[1] = c[1] * f1 + fogcolor[1] * f2;
1317                         c[2] = c[2] * f1 + fogcolor[2] * f2;
1318                 }
1319         }
1320         GL_UseColorArray();
1321         R_Mesh_Draw(8, 12);
1322 }
1323 */
1324
1325 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1326 {
1327         const entity_render_t *ent = calldata1;
1328         int i, element[24];
1329         float f1, f2, *c, diff[3];
1330         rmeshstate_t m;
1331         memset(&m, 0, sizeof(m));
1332         if (ent->flags & EF_ADDITIVE)
1333         {
1334                 m.blendfunc1 = GL_SRC_ALPHA;
1335                 m.blendfunc2 = GL_ONE;
1336         }
1337         else if (ent->alpha < 1)
1338         {
1339                 m.blendfunc1 = GL_SRC_ALPHA;
1340                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1341         }
1342         else
1343         {
1344                 m.blendfunc1 = GL_ONE;
1345                 m.blendfunc2 = GL_ZERO;
1346         }
1347         R_Mesh_Matrix(&ent->matrix);
1348         R_Mesh_State(&m);
1349
1350         element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1351         element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1352         element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1353         element[ 9] = 5;element[10] = 3;element[11] = 1;
1354         element[12] = 0;element[13] = 2;element[14] = 4;
1355         element[15] = 2;element[16] = 1;element[17] = 4;
1356         element[18] = 3;element[19] = 0;element[20] = 4;
1357         element[21] = 1;element[22] = 3;element[23] = 4;
1358         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
1359         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
1360         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
1361         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
1362         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
1363         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
1364         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;
1365         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;
1366         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;
1367         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;
1368         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;
1369         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;
1370         if (fogenabled)
1371         {
1372                 VectorSubtract(ent->origin, r_origin, diff);
1373                 f2 = exp(fogdensity/DotProduct(diff, diff));
1374                 f1 = 1 - f2;
1375                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1376                 {
1377                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1378                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1379                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1380                 }
1381         }
1382         else
1383         {
1384                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1385                 {
1386                         c[0] *= r_colorscale;
1387                         c[1] *= r_colorscale;
1388                         c[2] *= r_colorscale;
1389                 }
1390         }
1391         GL_UseColorArray();
1392         R_Mesh_Draw(6, 8, element);
1393 }
1394
1395 void R_DrawNoModel(entity_render_t *ent)
1396 {
1397         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1398                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1399         //else
1400         //      R_DrawNoModelCallback(ent, 0);
1401 }
1402
1403 void R_CalcBeamVerts (float *vert, const vec3_t org1, const vec3_t org2, float width)
1404 {
1405         vec3_t right1, right2, diff, normal;
1406
1407         VectorSubtract (org2, org1, normal);
1408         VectorNormalizeFast (normal);
1409
1410         // calculate 'right' vector for start
1411         VectorSubtract (r_origin, org1, diff);
1412         VectorNormalizeFast (diff);
1413         CrossProduct (normal, diff, right1);
1414
1415         // calculate 'right' vector for end
1416         VectorSubtract (r_origin, org2, diff);
1417         VectorNormalizeFast (diff);
1418         CrossProduct (normal, diff, right2);
1419
1420         vert[ 0] = org1[0] + width * right1[0];
1421         vert[ 1] = org1[1] + width * right1[1];
1422         vert[ 2] = org1[2] + width * right1[2];
1423         vert[ 4] = org1[0] - width * right1[0];
1424         vert[ 5] = org1[1] - width * right1[1];
1425         vert[ 6] = org1[2] - width * right1[2];
1426         vert[ 8] = org2[0] - width * right2[0];
1427         vert[ 9] = org2[1] - width * right2[1];
1428         vert[10] = org2[2] - width * right2[2];
1429         vert[12] = org2[0] + width * right2[0];
1430         vert[13] = org2[1] + width * right2[1];
1431         vert[14] = org2[2] + width * right2[2];
1432 }