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         stackpos = 0;
 387         stack[stackpos++] = cl.worldmodel->nodes;
 388         while (stackpos)
 389         {
 390                 node = stack[--stackpos];
 391                 if (node->contents < 0)
 392                 {
 393                         if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
 394                                 return false;
 395                 }
 396                 else
 397                 {
 398                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 399                         if (sides & 2 && stackpos < 4096)
 400                                 stack[stackpos++] = node->children[1];
 401                         if (sides & 1 && stackpos < 4096)
 402                                 stack[stackpos++] = node->children[0];
 403                 }
 404         }
 405         return true;
 406 }
 407
 408 int VIS_CullBox(const vec3_t mins, const vec3_t maxs)
 409 {
 410         int stackpos, sides;
 411         mnode_t *node, *stack[4096];
 412         if (R_CullBox(mins, maxs))
 413                 return true;
 414         stackpos = 0;
 415         stack[stackpos++] = cl.worldmodel->nodes;
 416         while (stackpos)
 417         {
 418                 node = stack[--stackpos];
 419                 if (node->contents < 0)
 420                 {
 421                         if (((mleaf_t *)node)->visframe == r_framecount)
 422                                 return false;
 423                 }
 424                 else
 425                 {
 426                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 427                         if (sides & 2 && stackpos < 4096)
 428                                 stack[stackpos++] = node->children[1];
 429                         if (sides & 1 && stackpos < 4096)
 430                                 stack[stackpos++] = node->children[0];
 431                 }
 432         }
 433         return true;
 434 }
 435
 436 int R_CullSphere(const vec3_t origin, vec_t radius)
 437 {
 438         return (DotProduct(frustum[0].normal, origin) + radius < frustum[0].dist
 439              || DotProduct(frustum[1].normal, origin) + radius < frustum[1].dist
 440              || DotProduct(frustum[2].normal, origin) + radius < frustum[2].dist
 441              || DotProduct(frustum[3].normal, origin) + radius < frustum[3].dist);
 442 }
 443
 444 int PVS_CullSphere(const vec3_t origin, vec_t radius)
 445 {
 446         int stackpos;
 447         mnode_t *node, *stack[4096];
 448         float dist;
 449         stackpos = 0;
 450         stack[stackpos++] = cl.worldmodel->nodes;
 451         while (stackpos)
 452         {
 453                 node = stack[--stackpos];
 454                 if (node->contents < 0)
 455                 {
 456                         if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
 457                                 return false;
 458                 }
 459                 else
 460                 {
 461                         dist = PlaneDiff(origin, node->plane);
 462                         if (dist <= radius)
 463                                 stack[stackpos++] = node->children[1];
 464                         if (dist >= -radius)
 465                                 stack[stackpos++] = node->children[0];
 466                 }
 467         }
 468         return true;
 469 }
 470
 471 int VIS_CullSphere(const vec3_t origin, vec_t radius)
 472 {
 473         int stackpos;
 474         mnode_t *node, *stack[4096];
 475         float dist;
 476         if (R_CullSphere(origin, radius))
 477                 return true;
 478         stackpos = 0;
 479         stack[stackpos++] = cl.worldmodel->nodes;
 480         while (stackpos)
 481         {
 482                 node = stack[--stackpos];
 483                 if (node->contents < 0)
 484                 {
 485                         if (((mleaf_t *)node)->visframe == r_framecount)
 486                                 return false;
 487                 }
 488                 else
 489                 {
 490                         dist = PlaneDiff(origin, node->plane);
 491                         if (dist <= radius)
 492                                 stack[stackpos++] = node->children[1];
 493                         if (dist >= -radius)
 494                                 stack[stackpos++] = node->children[0];
 495                 }
 496         }
 497         return true;
 498 }
 499
 500
 501 //==================================================================================
 502
 503 static void R_MarkEntities (void)
 504 {
 505         int i;
 506         vec3_t v;
 507         entity_render_t *ent;
 508
 509         ent = &cl_entities[0].render;
 510         Matrix4x4_CreateIdentity(&ent->matrix);
 511         Matrix4x4_CreateIdentity(&ent->inversematrix);
 512
 513         if (cl.worldmodel)
 514                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 515
 516         if (!r_drawentities.integer)
 517                 return;
 518
 519         for (i = 0;i < r_refdef.numentities;i++)
 520         {
 521                 ent = r_refdef.entities[i];
 522                 Mod_CheckLoaded(ent->model);
 523
 524                 // move view-relative models to where they should be
 525                 if (ent->flags & RENDER_VIEWMODEL)
 526                 {
 527                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 528                         ent->flags -= RENDER_VIEWMODEL;
 529                         // transform origin
 530                         VectorCopy(ent->origin, v);
 531                         ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 532                         ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 533                         ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 534                         // adjust angles
 535                         VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
 536                 }
 537
 538                 VectorCopy(ent->angles, v);
 539                 if (!ent->model || ent->model->type != mod_brush)
 540                         v[0] = -v[0];
 541                 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
 542                 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 543                 R_LerpAnimation(ent);
 544                 R_UpdateEntLights(ent);
 545                 if ((chase_active.integer || !(ent->flags & RENDER_EXTERIORMODEL))
 546                  && !VIS_CullSphere(ent->origin, ent->model->radius * ent->scale)
 547                  && !VIS_CullBox(ent->mins, ent->maxs))
 548                 {
 549                         ent->visframe = r_framecount;
 550                         R_FarClip_Box(ent->mins, ent->maxs);
 551                 }
 552         }
 553 }
 554
 555 // only used if skyrendermasked, and normally returns false
 556 int R_DrawBrushModelsSky (void)
 557 {
 558         int i, sky;
 559         entity_render_t *ent;
 560
 561         if (!r_drawentities.integer)
 562                 return false;
 563
 564         sky = false;
 565         for (i = 0;i < r_refdef.numentities;i++)
 566         {
 567                 ent = r_refdef.entities[i];
 568                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 569                 {
 570                         ent->model->DrawSky(ent);
 571                         sky = true;
 572                 }
 573         }
 574         return sky;
 575 }
 576
 577 /*
 578 =============
 579 R_DrawViewModel
 580 =============
 581 */
 582 /*
 583 void R_DrawViewModel (void)
 584 {
 585         entity_render_t *ent;
 586
 587         // FIXME: move these checks to client
 588         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 589                 return;
 590
 591         ent = &cl.viewent.render;
 592         Mod_CheckLoaded(ent->model);
 593         R_LerpAnimation(ent);
 594         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 595         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 596         R_UpdateEntLights(ent);
 597         ent->model->Draw(ent);
 598 }
 599 */
 600
 601 void R_DrawNoModel(entity_render_t *ent);
 602 void R_DrawModels ()
 603 {
 604         int i;
 605         entity_render_t *ent;
 606
 607         if (!r_drawentities.integer)
 608                 return;
 609
 610         for (i = 0;i < r_refdef.numentities;i++)
 611         {
 612                 ent = r_refdef.entities[i];
 613                 if (ent->visframe == r_framecount)
 614                 {
 615                         if (ent->model && ent->model->Draw != NULL)
 616                                 ent->model->Draw(ent);
 617                         else
 618                                 R_DrawNoModel(ent);
 619                 }
 620         }
 621 }
 622
 623 void R_DrawFakeShadows (void)
 624 {
 625         int i;
 626         entity_render_t *ent;
 627
 628         ent = &cl_entities[0].render;
 629         if (ent->model && ent->model->DrawFakeShadow)
 630                 ent->model->DrawFakeShadow(ent);
 631
 632         if (!r_drawentities.integer)
 633                 return;
 634         for (i = 0;i < r_refdef.numentities;i++)
 635         {
 636                 ent = r_refdef.entities[i];
 637                 if (ent->model && ent->model->DrawFakeShadow)
 638                         ent->model->DrawFakeShadow(ent);
 639         }
 640 }
 641
 642 #include "r_shadow.h"
 643
 644 int shadowframecount = 0;
 645
 646 int Light_CullBox(const vec3_t mins, const vec3_t maxs)
 647 {
 648         int stackpos, sides;
 649         mnode_t *node, *stack[4096];
 650         stackpos = 0;
 651         stack[stackpos++] = cl.worldmodel->nodes;
 652         while (stackpos)
 653         {
 654                 node = stack[--stackpos];
 655                 if (node->contents < 0)
 656                 {
 657                         if (((mleaf_t *)node)->worldnodeframe == shadowframecount)
 658                                 return false;
 659                 }
 660                 else
 661                 {
 662                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 663                         if (sides & 2 && stackpos < 4096)
 664                                 stack[stackpos++] = node->children[1];
 665                         if (sides & 1 && stackpos < 4096)
 666                                 stack[stackpos++] = node->children[0];
 667                 }
 668         }
 669         return true;
 670 }
 671
 672 int LightAndVis_CullBox(const vec3_t mins, const vec3_t maxs)
 673 {
 674         int stackpos, sides;
 675         mnode_t *node, *stack[4096];
 676         if (R_CullBox(mins, maxs))
 677                 return true;
 678         stackpos = 0;
 679         stack[stackpos++] = cl.worldmodel->nodes;
 680         while (stackpos)
 681         {
 682                 node = stack[--stackpos];
 683                 if (node->contents < 0)
 684                 {
 685                         if (((mleaf_t *)node)->visframe == r_framecount && ((mleaf_t *)node)->worldnodeframe == shadowframecount)
 686                                 return false;
 687                 }
 688                 else
 689                 {
 690                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 691                         if (sides & 2 && stackpos < 4096)
 692                                 stack[stackpos++] = node->children[1];
 693                         if (sides & 1 && stackpos < 4096)
 694                                 stack[stackpos++] = node->children[0];
 695                 }
 696         }
 697         return true;
 698 }
 699
 700
 701 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)
 702 {
 703         int i;
 704         vec3_t p, p2, temp, relativelightorigin, mins, maxs;
 705         float dist, projectdistance;
 706         // rough checks
 707         if (ent->model == NULL || ent->model->DrawShadowVolume == NULL || ent->alpha < 1 || (ent->effects & EF_ADDITIVE))
 708                 return;
 709         if (r_shadow_cull.integer)
 710         {
 711                 if (ent->maxs[0] < lightmins[0] || ent->mins[0] > lightmaxs[0]
 712                  || ent->maxs[1] < lightmins[1] || ent->mins[1] > lightmaxs[1]
 713                  || ent->maxs[2] < lightmins[2] || ent->mins[2] > lightmaxs[2]
 714                  || Light_CullBox(ent->mins, ent->maxs))
 715                         return;
 716         }
 717         if (r_shadow_cull.integer)
 718         {
 719                 projectdistance = cullradius;
 720                 // calculate projected bounding box and decide if it is on-screen
 721                 for (i = 0;i < 8;i++)
 722                 {
 723                         p2[0] = i & 1 ? ent->model->normalmaxs[0] : ent->model->normalmins[0];
 724                         p2[1] = i & 2 ? ent->model->normalmaxs[1] : ent->model->normalmins[1];
 725                         p2[2] = i & 4 ? ent->model->normalmaxs[2] : ent->model->normalmins[2];
 726                         Matrix4x4_Transform(&ent->matrix, p2, p);
 727                         VectorSubtract(p, lightorigin, temp);
 728                         dist = projectdistance / sqrt(DotProduct(temp, temp));
 729                         VectorMA(p, dist, temp, p2);
 730                         if (i)
 731                         {
 732                                 if (mins[0] > p[0]) mins[0] = p[0];if (maxs[0] < p[0]) maxs[0] = p[0];
 733                                 if (mins[1] > p[1]) mins[1] = p[1];if (maxs[1] < p[1]) maxs[1] = p[1];
 734                                 if (mins[2] > p[2]) mins[2] = p[2];if (maxs[2] < p[2]) maxs[2] = p[2];
 735                         }
 736                         else
 737                         {
 738                                 VectorCopy(p, mins);
 739                                 VectorCopy(p, maxs);
 740                         }
 741                         if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
 742                         if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
 743                         if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
 744                 }
 745                 if (mins[0] >= clipmaxs[0] || maxs[0] <= clipmins[0]
 746                  || mins[1] >= clipmaxs[1] || maxs[1] <= clipmins[1]
 747                  || mins[2] >= clipmaxs[2] || maxs[2] <= clipmins[2]
 748                  || LightAndVis_CullBox(mins, maxs))
 749                         return;
 750         }
 751         Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
 752         ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius);
 753 }
 754
 755 void R_Shadow_DrawWorldLightShadowVolume(matrix4x4_t *matrix, worldlight_t *light);
 756
 757 #define SHADOWSPHERE_SEGMENTS 16
 758
 759 shadowmesh_t *shadowsphere;
 760 void R_CreateShadowSphere(void)
 761 {
 762         int i, j;
 763         vec3_t angles, angles2, angles3, angles4;
 764         float verts[12];
 765         shadowsphere = Mod_ShadowMesh_Begin(zonemempool, SHADOWSPHERE_SEGMENTS * SHADOWSPHERE_SEGMENTS / 2);
 766         for (i = 0;i < SHADOWSPHERE_SEGMENTS / 2;i++)
 767         {
 768                 for (j = 0;j < SHADOWSPHERE_SEGMENTS;j++)
 769                 {
 770                         angles[0] = (i * 360.0f / SHADOWSPHERE_SEGMENTS) + 90.0f;
 771                         angles[1] = j * 360.0f / SHADOWSPHERE_SEGMENTS;
 772                         angles[2] = 0;
 773                         VectorCopy(angles, angles2);
 774                         VectorCopy(angles, angles3);
 775                         VectorCopy(angles, angles4);
 776                         angles2[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 777                         angles3[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 778                         angles3[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 779                         angles4[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 780                         AngleVectorsFLU(angles, verts, NULL, NULL);
 781                         AngleVectorsFLU(angles2, verts + 9, NULL, NULL);
 782                         AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
 783                         AngleVectorsFLU(angles4, verts + 3, NULL, NULL);
 784                         VectorScale(&verts[0], 1.0f, &verts[0]);
 785                         VectorScale(&verts[3], 1.0f, &verts[3]);
 786                         VectorScale(&verts[6], 1.0f, &verts[6]);
 787                         VectorScale(&verts[9], 1.0f, &verts[9]);
 788                         Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
 789                 }
 790         }
 791         shadowsphere = Mod_ShadowMesh_Finish(zonemempool, shadowsphere);
 792 }
 793
 794
 795 void R_DrawShadowSphere(vec3_t origin, float cullradius, float lightradius)
 796 {
 797         shadowmesh_t *mesh;
 798         matrix4x4_t matrix;
 799         if (!shadowsphere)
 800                 R_CreateShadowSphere();
 801         Matrix4x4_CreateScale(&matrix, lightradius);
 802         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 803         R_Mesh_Matrix(&matrix);
 804         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 805         {
 806                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 807                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 808         }
 809         Matrix4x4_CreateScale(&matrix, -cullradius);
 810         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 811         R_Mesh_Matrix(&matrix);
 812         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 813         {
 814                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 815                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 816         }
 817 }
 818
 819 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);
 820 void R_ShadowVolumeLighting (int visiblevolumes)
 821 {
 822         int i;
 823         entity_render_t *ent;
 824         int lnum;
 825         float f, lightradius, cullradius;
 826         vec3_t relativelightorigin, relativeeyeorigin, lightcolor, clipmins, clipmaxs;
 827         worldlight_t *wl;
 828         //mlight_t *sl;
 829         rdlight_t *rd;
 830         rmeshstate_t m;
 831         mleaf_t *leaf;
 832
 833         if (visiblevolumes)
 834         {
 835                 memset(&m, 0, sizeof(m));
 836                 m.blendfunc1 = GL_ONE;
 837                 m.blendfunc2 = GL_ONE;
 838                 if (r_shadow_realtime.integer >= 3)
 839                         m.depthdisable = true;
 840                 R_Mesh_State(&m);
 841                 qglDisable(GL_CULL_FACE);
 842                 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
 843         }
 844         else
 845                 R_Shadow_Stage_Begin();
 846         shadowframecount++;
 847         for (lnum = 0, wl = r_shadow_worldlightchain;wl;wl = wl->next, lnum++)
 848         {
 849                 if (d_lightstylevalue[wl->style] <= 0)
 850                         continue;
 851                 cullradius = wl->cullradius;
 852                 lightradius = wl->lightradius;
 853                 if (R_CullSphere(wl->origin, lightradius))
 854                         continue;
 855                 //if (R_CullBox(wl->mins, wl->maxs) || R_CullSphere(wl->origin, lightradius))
 856                 //      continue;
 857                 //if (VIS_CullBox(wl->mins, wl->maxs) || VIS_CullSphere(wl->origin, lightradius))
 858                 //      continue;
 859                 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
 860                         continue;
 861
 862                 for (i = 0;i < wl->numleafs;i++)
 863                         if (wl->leafs[i]->visframe == r_framecount)
 864                                 break;
 865                 if (i == wl->numleafs)
 866                         continue;
 867                 leaf = wl->leafs[i++];
 868                 VectorCopy(leaf->mins, clipmins);
 869                 VectorCopy(leaf->maxs, clipmaxs);
 870                 for (i++;i < wl->numleafs;i++)
 871                 {
 872                         leaf = wl->leafs[i];
 873                         if (leaf->visframe == r_framecount)
 874                         {
 875                                 if (clipmins[0] > leaf->mins[0]) clipmins[0] = leaf->mins[0];
 876                                 if (clipmaxs[0] < leaf->maxs[0]) clipmaxs[0] = leaf->maxs[0];
 877                                 if (clipmins[1] > leaf->mins[1]) clipmins[1] = leaf->mins[1];
 878                                 if (clipmaxs[1] < leaf->maxs[1]) clipmaxs[1] = leaf->maxs[1];
 879                                 if (clipmins[2] > leaf->mins[2]) clipmins[2] = leaf->mins[2];
 880                                 if (clipmaxs[2] < leaf->maxs[2]) clipmaxs[2] = leaf->maxs[2];
 881                         }
 882                 }
 883                 if (clipmins[0] < wl->mins[0]) clipmins[0] = wl->mins[0];
 884                 if (clipmins[1] < wl->mins[1]) clipmins[1] = wl->mins[1];
 885                 if (clipmins[2] < wl->mins[2]) clipmins[2] = wl->mins[2];
 886                 if (clipmaxs[0] > wl->maxs[0]) clipmaxs[0] = wl->maxs[0];
 887                 if (clipmaxs[1] > wl->maxs[1]) clipmaxs[1] = wl->maxs[1];
 888                 if (clipmaxs[2] > wl->maxs[2]) clipmaxs[2] = wl->maxs[2];
 889
 890                 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, wl->origin, wl->cullradius))
 891                         continue;
 892
 893                 // mark the leafs we care about so only things in those leafs will matter
 894                 for (i = 0;i < wl->numleafs;i++)
 895                         wl->leafs[i]->worldnodeframe = shadowframecount;
 896
 897
 898                 f = d_lightstylevalue[wl->style] * (1.0f / 256.0f);
 899                 VectorScale(wl->light, f, lightcolor);
 900                 if (wl->selected)
 901                 {
 902                         f = 2 + sin(realtime * M_PI * 4.0);
 903                         VectorScale(lightcolor, f, lightcolor);
 904                 }
 905
 906                 if (!visiblevolumes)
 907                         R_Shadow_Stage_ShadowVolumes();
 908                 ent = &cl_entities[0].render;
 909                 if (wl->shadowvolume && r_shadow_staticworldlights.integer)
 910                         R_Shadow_DrawWorldLightShadowVolume(&ent->matrix, wl);
 911                 else
 912                         R_TestAndDrawShadowVolume(ent, wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
 913                 if (r_drawentities.integer)
 914                 {
 915                         for (i = 0;i < r_refdef.numentities;i++)
 916                         {
 917                                 ent = r_refdef.entities[i];
 918                                 if (ent->model)
 919                                         R_TestAndDrawShadowVolume(ent, wl->origin, cullradius, lightradius, wl->mins, wl->maxs, clipmins, clipmaxs);
 920                         }
 921                 }
 922
 923                 if (!visiblevolumes)
 924                 {
 925                         R_Shadow_Stage_Light();
 926                         ent = &cl_entities[0].render;
 927                         if (ent->model && ent->model->DrawLight)
 928                         {
 929                                 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
 930                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 931                                 if (wl->numsurfaces)
 932                                         R_Model_Brush_DrawLightForSurfaceList(ent, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, wl->surfaces, wl->numsurfaces);
 933                                 else
 934                                         ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
 935                         }
 936                         if (r_drawentities.integer)
 937                         {
 938                                 for (i = 0;i < r_refdef.numentities;i++)
 939                                 {
 940                                         ent = r_refdef.entities[i];
 941                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
 942                                          && ent->maxs[0] >= wl->mins[0] && ent->mins[0] <= wl->maxs[0]
 943                                          && ent->maxs[1] >= wl->mins[1] && ent->mins[1] <= wl->maxs[1]
 944                                          && ent->maxs[2] >= wl->mins[2] && ent->mins[2] <= wl->maxs[2]
 945                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 946                                         {
 947                                                 Matrix4x4_Transform(&ent->inversematrix, wl->origin, relativelightorigin);
 948                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 949                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
 950                                         }
 951                                 }
 952                         }
 953                 }
 954         }
 955         /*
 956         for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
 957         {
 958                 if (d_lightstylevalue[sl->style] <= 0)
 959                         continue;
 960                 if (r_shadow_debuglight.integer >= 0 && lnum != r_shadow_debuglight.integer)
 961                         continue;
 962                 cullradius = sl->cullradius;
 963                 lightradius = sl->lightradius;
 964                 if (VIS_CullBox(sl->mins, sl->maxs) || VIS_CullSphere(sl->origin, lightradius))
 965                         continue;
 966
 967                 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
 968                 VectorScale(sl->light, f, lightcolor);
 969
 970                 if (!visiblevolumes)
 971                         R_Shadow_Stage_ShadowVolumes();
 972                 if (sl->shadowvolume && r_shadow_staticworldlights.integer)
 973                         R_DrawWorldLightShadowVolume(&cl_entities[0].render.matrix, sl->shadowvolume);
 974                 else
 975                         R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius, lightradius);
 976                 if (r_drawentities.integer)
 977                 {
 978                         for (i = 0;i < r_refdef.numentities;i++)
 979                         {
 980                                 ent = r_refdef.entities[i];
 981                                 if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
 982                                  && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
 983                                  && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
 984                                  && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 985                                         R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius, lightradius);
 986                         }
 987                 }
 988
 989                 if (!visiblevolumes)
 990                 {
 991                         R_Shadow_Stage_Light();
 992                         ent = &cl_entities[0].render;
 993                         if (ent->model && ent->model->DrawLight)
 994                         {
 995                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
 996                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 997                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
 998                         }
 999                         if (r_drawentities.integer)
1000                         {
1001                                 for (i = 0;i < r_refdef.numentities;i++)
1002                                 {
1003                                         ent = r_refdef.entities[i];
1004                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
1005                                          && ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
1006                                          && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
1007                                          && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
1008                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1009                                         {
1010                                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
1011                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1012                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
1013                                         }
1014                                 }
1015                         }
1016                 }
1017         }
1018         */
1019         for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
1020         {
1021                 cullradius = rd->cullradius;
1022                 lightradius = rd->cullradius;
1023                 if (VIS_CullSphere(rd->origin, lightradius))
1024                         continue;
1025
1026                 VectorScale(rd->light, (1.0f / 8192.0f), lightcolor);
1027                 clipmins[0] = rd->origin[0] - cullradius;
1028                 clipmins[1] = rd->origin[1] - cullradius;
1029                 clipmins[2] = rd->origin[2] - cullradius;
1030                 clipmaxs[0] = rd->origin[0] + cullradius;
1031                 clipmaxs[1] = rd->origin[1] + cullradius;
1032                 clipmaxs[2] = rd->origin[2] + cullradius;
1033
1034                 if (R_Shadow_ScissorForBBoxAndSphere(clipmins, clipmaxs, rd->origin, rd->cullradius))
1035                         continue;
1036
1037                 if (!visiblevolumes)
1038                         R_Shadow_Stage_ShadowVolumes();
1039                 ent = &cl_entities[0].render;
1040                 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
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 != rd->ent)
1047                                         R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius, clipmins, clipmaxs, clipmins, clipmaxs);
1048                         }
1049                 }
1050
1051                 if (!visiblevolumes)
1052                 {
1053                         R_Shadow_Stage_Light();
1054                         ent = &cl_entities[0].render;
1055                         if (ent->model && ent->model->DrawLight)
1056                         {
1057                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1058                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1059                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1060                         }
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->visframe == r_framecount && ent->model && ent->model->DrawLight
1067                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
1068                                         {
1069                                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1070                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
1071                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius / ent->scale, lightcolor);
1072                                         }
1073                                 }
1074                         }
1075                 }
1076         }
1077
1078         if (!visiblevolumes)
1079                 R_Shadow_Stage_End();
1080         qglEnable(GL_CULL_FACE);
1081         qglDisable(GL_SCISSOR_TEST);
1082 }
1083
1084 static void R_SetFrustum (void)
1085 {
1086         int i;
1087
1088         // LordHavoc: note to all quake engine coders, the special case for 90
1089         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
1090         // disabled as well.
1091         // rotate VPN right by FOV_X/2 degrees
1092         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
1093         // rotate VPN left by FOV_X/2 degrees
1094         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
1095         // rotate VPN up by FOV_X/2 degrees
1096         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
1097         // rotate VPN down by FOV_X/2 degrees
1098         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
1099
1100         for (i = 0;i < 4;i++)
1101         {
1102                 frustum[i].type = PLANE_ANYZ;
1103                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
1104                 PlaneClassify(&frustum[i]);
1105         }
1106 }
1107
1108 /*
1109 ===============
1110 R_SetupFrame
1111 ===============
1112 */
1113 static void R_SetupFrame (void)
1114 {
1115 // don't allow cheats in multiplayer
1116         if (cl.maxclients > 1)
1117         {
1118                 if (r_fullbright.integer != 0)
1119                         Cvar_Set ("r_fullbright", "0");
1120                 if (r_ambient.value != 0)
1121                         Cvar_Set ("r_ambient", "0");
1122         }
1123
1124         r_framecount++;
1125
1126 // build the transformation matrix for the given view angles
1127         VectorCopy (r_refdef.vieworg, r_origin);
1128
1129         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
1130
1131         R_AnimateLight ();
1132 }
1133
1134
1135 static void R_BlendView(void)
1136 {
1137         rmeshstate_t m;
1138         float r;
1139
1140         if (r_refdef.viewblend[3] < 0.01f)
1141                 return;
1142
1143         memset(&m, 0, sizeof(m));
1144         m.blendfunc1 = GL_SRC_ALPHA;
1145         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1146         m.depthdisable = true; // magic
1147         R_Mesh_Matrix(&r_identitymatrix);
1148         R_Mesh_State(&m);
1149
1150         r = 64000;
1151         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
1152         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
1153         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
1154         r *= 3;
1155         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
1156         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
1157         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
1158         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
1159         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
1160         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
1161         GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
1162         R_Mesh_Draw(3, 1, polygonelements);
1163 }
1164
1165 /*
1166 ================
1167 R_RenderView
1168
1169 r_refdef must be set before the first call
1170 ================
1171 */
1172 void R_RenderView (void)
1173 {
1174         entity_render_t *world;
1175         if (!r_refdef.entities/* || !cl.worldmodel*/)
1176                 return; //Host_Error ("R_RenderView: NULL worldmodel");
1177
1178         if (r_shadow_realtime.integer == 1)
1179         {
1180                 if (!gl_texturecubemap)
1181                 {
1182                         Con_Printf("Cubemap texture support not detected, turning off r_shadow_realtime\n");
1183                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1184                 }
1185                 else if (!gl_dot3arb)
1186                 {
1187                         Con_Printf("Bumpmapping support not detected, turning off r_shadow_realtime\n");
1188                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1189                 }
1190                 else if (!gl_stencil)
1191                 {
1192                         Con_Printf("Stencil not enabled, turning off r_shadow_realtime, please type vid_stencil 1;vid_bitsperpixel 32;vid_restart and try again\n");
1193                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1194                 }
1195                 else if (!gl_combine.integer)
1196                 {
1197                         Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadow_realtime\n");
1198                         Cvar_SetValueQuick(&r_shadow_realtime, 0);
1199                 }
1200         }
1201
1202         R_Shadow_UpdateLightingMode();
1203
1204         world = &cl_entities[0].render;
1205
1206         // FIXME: move to client
1207         R_MoveExplosions();
1208         R_TimeReport("mexplosion");
1209
1210         R_Textures_Frame();
1211         R_SetupFrame();
1212         R_SetFrustum();
1213         R_SetupFog();
1214         R_SkyStartFrame();
1215         R_BuildLightList();
1216         R_TimeReport("setup");
1217
1218         R_WorldVisibility(world);
1219         R_TimeReport("worldvis");
1220
1221         R_FarClip_Start(r_origin, vpn, 768.0f);
1222         R_MarkEntities();
1223         r_farclip = R_FarClip_Finish() + 256.0f;
1224         R_TimeReport("markentity");
1225
1226         GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1227         if (r_shadow_lightingmode > 0)
1228                 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1229         else
1230                 GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1231         GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1232         qglDepthFunc(GL_LEQUAL);
1233
1234         R_Mesh_Start();
1235         R_MeshQueue_BeginScene();
1236
1237         if (r_shadow_lightingmode)
1238                 R_Shadow_UpdateWorldLightSelection();
1239
1240         if (R_DrawBrushModelsSky())
1241                 R_TimeReport("bmodelsky");
1242
1243         // must occur early because it can draw sky
1244         R_DrawWorld(world);
1245         R_TimeReport("world");
1246
1247         // don't let sound skip if going slow
1248         if (!intimerefresh && !r_speeds.integer)
1249                 S_ExtraUpdate ();
1250
1251         R_DrawModels(r_shadow_lightingmode > 0);
1252         R_TimeReport("models");
1253
1254         if (r_shadows.integer == 1 && r_shadow_lightingmode <= 0)
1255         {
1256                 R_DrawFakeShadows();
1257                 R_TimeReport("fakeshadow");
1258         }
1259
1260         if (r_shadow_lightingmode > 0)
1261         {
1262                 R_ShadowVolumeLighting(false);
1263                 R_TimeReport("dynlight");
1264         }
1265
1266         R_DrawParticles();
1267         R_TimeReport("particles");
1268
1269         R_DrawExplosions();
1270         R_TimeReport("explosions");
1271
1272         R_MeshQueue_RenderTransparent();
1273         R_TimeReport("drawtrans");
1274
1275         R_DrawCoronas();
1276         R_TimeReport("coronas");
1277
1278         R_DrawWorldCrosshair();
1279         R_TimeReport("crosshair");
1280
1281         R_BlendView();
1282         R_TimeReport("blendview");
1283
1284         R_MeshQueue_Render();
1285         R_MeshQueue_EndScene();
1286         if (r_shadow_realtime.integer >= 2)
1287         {
1288                 R_ShadowVolumeLighting(true);
1289                 R_TimeReport("shadowvolume");
1290         }
1291         R_Mesh_Finish();
1292         R_TimeReport("meshfinish");
1293 }
1294
1295 /*
1296 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1297 {
1298         int i;
1299         float *v, *c, f1, f2, diff[3];
1300         rmeshstate_t m;
1301         m.blendfunc1 = GL_SRC_ALPHA;
1302         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1303         R_Mesh_Matrix(&r_identitymatrix);
1304         R_Mesh_State(&m);
1305
1306         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1307         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1308         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1309         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1310         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1311         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1312         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1313         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1314         R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1315         if (fogenabled)
1316         {
1317                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1318                 {
1319                         VectorSubtract(v, r_origin, diff);
1320                         f2 = exp(fogdensity/DotProduct(diff, diff));
1321                         f1 = 1 - f2;
1322                         f2 *= r_colorscale;
1323                         c[0] = c[0] * f1 + fogcolor[0] * f2;
1324                         c[1] = c[1] * f1 + fogcolor[1] * f2;
1325                         c[2] = c[2] * f1 + fogcolor[2] * f2;
1326                 }
1327         }
1328         GL_UseColorArray();
1329         R_Mesh_Draw(8, 12);
1330 }
1331 */
1332
1333 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1334 {
1335         const entity_render_t *ent = calldata1;
1336         int i, element[24];
1337         float f1, f2, *c, diff[3];
1338         rmeshstate_t m;
1339         memset(&m, 0, sizeof(m));
1340         if (ent->flags & EF_ADDITIVE)
1341         {
1342                 m.blendfunc1 = GL_SRC_ALPHA;
1343                 m.blendfunc2 = GL_ONE;
1344         }
1345         else if (ent->alpha < 1)
1346         {
1347                 m.blendfunc1 = GL_SRC_ALPHA;
1348                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1349         }
1350         else
1351         {
1352                 m.blendfunc1 = GL_ONE;
1353                 m.blendfunc2 = GL_ZERO;
1354         }
1355         R_Mesh_Matrix(&ent->matrix);
1356         R_Mesh_State(&m);
1357
1358         element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1359         element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1360         element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1361         element[ 9] = 5;element[10] = 3;element[11] = 1;
1362         element[12] = 0;element[13] = 2;element[14] = 4;
1363         element[15] = 2;element[16] = 1;element[17] = 4;
1364         element[18] = 3;element[19] = 0;element[20] = 4;
1365         element[21] = 1;element[22] = 3;element[23] = 4;
1366         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
1367         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
1368         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
1369         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
1370         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
1371         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
1372         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;
1373         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;
1374         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;
1375         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;
1376         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;
1377         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;
1378         if (fogenabled)
1379         {
1380                 VectorSubtract(ent->origin, r_origin, diff);
1381                 f2 = exp(fogdensity/DotProduct(diff, diff));
1382                 f1 = 1 - f2;
1383                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1384                 {
1385                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1386                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1387                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1388                 }
1389         }
1390         else
1391         {
1392                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1393                 {
1394                         c[0] *= r_colorscale;
1395                         c[1] *= r_colorscale;
1396                         c[2] *= r_colorscale;
1397                 }
1398         }
1399         GL_UseColorArray();
1400         R_Mesh_Draw(6, 8, element);
1401 }
1402
1403 void R_DrawNoModel(entity_render_t *ent)
1404 {
1405         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1406                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1407         //else
1408         //      R_DrawNoModelCallback(ent, 0);
1409 }
1410
1411 void R_CalcBeamVerts (float *vert, const vec3_t org1, const vec3_t org2, float width)
1412 {
1413         vec3_t right1, right2, diff, normal;
1414
1415         VectorSubtract (org2, org1, normal);
1416         VectorNormalizeFast (normal);
1417
1418         // calculate 'right' vector for start
1419         VectorSubtract (r_origin, org1, diff);
1420         VectorNormalizeFast (diff);
1421         CrossProduct (normal, diff, right1);
1422
1423         // calculate 'right' vector for end
1424         VectorSubtract (r_origin, org2, diff);
1425         VectorNormalizeFast (diff);
1426         CrossProduct (normal, diff, right2);
1427
1428         vert[ 0] = org1[0] + width * right1[0];
1429         vert[ 1] = org1[1] + width * right1[1];
1430         vert[ 2] = org1[2] + width * right1[2];
1431         vert[ 4] = org1[0] - width * right1[0];
1432         vert[ 5] = org1[1] - width * right1[1];
1433         vert[ 6] = org1[2] - width * right1[2];
1434         vert[ 8] = org2[0] - width * right2[0];
1435         vert[ 9] = org2[1] - width * right2[1];
1436         vert[10] = org2[2] - width * right2[2];
1437         vert[12] = org2[0] + width * right2[0];
1438         vert[13] = org2[1] + width * right2[1];
1439         vert[14] = org2[2] + width * right2[2];
1440 }