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 #include "r_shadow.h"
  24
  25 // used for dlight push checking and other things
  26 int r_framecount;
  27
  28 // used for visibility checking
  29 qbyte r_pvsbits[(MAX_MAP_LEAFS+7)>>3];
  30
  31 mplane_t frustum[4];
  32
  33 matrix4x4_t r_identitymatrix;
  34
  35 int c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
  36
  37 // true during envmap command capture
  38 qboolean envmap;
  39
  40 // maximum visible distance (recalculated from world box each frame)
  41 float r_farclip;
  42 // brightness of world lightmaps and related lighting
  43 // (often reduced when world rtlights are enabled)
  44 float r_lightmapintensity;
  45 // whether to draw world lights realtime, dlights realtime, and their shadows
  46 qboolean r_rtworld;
  47 qboolean r_rtworldshadows;
  48 qboolean r_rtdlight;
  49 qboolean r_rtdlightshadows;
  50
  51
  52 // forces all rendering to draw triangle outlines
  53 int r_showtrispass;
  54
  55 // view origin
  56 vec3_t r_vieworigin;
  57 vec3_t r_viewforward;
  58 vec3_t r_viewleft;
  59 vec3_t r_viewright;
  60 vec3_t r_viewup;
  61 int r_view_x;
  62 int r_view_y;
  63 int r_view_z;
  64 int r_view_width;
  65 int r_view_height;
  66 int r_view_depth;
  67 float r_view_fov_x;
  68 float r_view_fov_y;
  69 matrix4x4_t r_view_matrix;
  70
  71 //
  72 // screen size info
  73 //
  74 refdef_t r_refdef;
  75
  76 // 8.8 fraction of base light value
  77 unsigned short d_lightstylevalue[256];
  78
  79 cvar_t r_showtris = {0, "r_showtris", "0"};
  80 cvar_t r_drawentities = {0, "r_drawentities","1"};
  81 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
  82 cvar_t r_speeds = {0, "r_speeds","0"};
  83 cvar_t r_fullbright = {0, "r_fullbright","0"};
  84 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  85 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  86 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  87 cvar_t r_drawcollisionbrushes = {0, "r_drawcollisionbrushes", "0"};
  88
  89 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
  90 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  91 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
  92 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
  93 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
  94 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
  95 cvar_t gl_fogend = {0, "gl_fogend","0"};
  96
  97 cvar_t r_textureunits = {0, "r_textureunits", "32"};
  98
  99 cvar_t r_lerpsprites = {CVAR_SAVE, "r_lerpsprites", "1"};
 100 cvar_t r_lerpmodels = {CVAR_SAVE, "r_lerpmodels", "1"};
 101 cvar_t r_waterscroll = {CVAR_SAVE, "r_waterscroll", "1"};
 102 cvar_t r_watershader = {CVAR_SAVE, "r_watershader", "1"};
 103
 104
 105 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
 106 {
 107         int i;
 108         for (i = 0;i < verts;i++)
 109         {
 110                 out[0] = in[0] * r;
 111                 out[1] = in[1] * g;
 112                 out[2] = in[2] * b;
 113                 out[3] = in[3];
 114                 in += 4;
 115                 out += 4;
 116         }
 117 }
 118
 119 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
 120 {
 121         int i;
 122         for (i = 0;i < verts;i++)
 123         {
 124                 out[0] = r;
 125                 out[1] = g;
 126                 out[2] = b;
 127                 out[3] = a;
 128                 out += 4;
 129         }
 130 }
 131
 132 /*
 133 ====================
 134 R_TimeRefresh_f
 135
 136 For program optimization
 137 ====================
 138 */
 139 qboolean intimerefresh = 0;
 140 static void R_TimeRefresh_f (void)
 141 {
 142         int i;
 143         float timestart, timedelta, oldangles[3];
 144
 145         intimerefresh = 1;
 146         VectorCopy(cl.viewangles, oldangles);
 147         VectorClear(cl.viewangles);
 148
 149         timestart = Sys_DoubleTime();
 150         for (i = 0;i < 128;i++)
 151         {
 152                 Matrix4x4_CreateFromQuakeEntity(&r_refdef.viewentitymatrix, r_vieworigin[0], r_vieworigin[1], r_vieworigin[2], 0, i / 128.0 * 360.0, 0, 1);
 153                 CL_UpdateScreen();
 154         }
 155         timedelta = Sys_DoubleTime() - timestart;
 156
 157         VectorCopy(oldangles, cl.viewangles);
 158         intimerefresh = 0;
 159         Con_Printf("%f seconds (%f fps)\n", timedelta, 128/timedelta);
 160 }
 161
 162 vec3_t fogcolor;
 163 vec_t fogdensity;
 164 float fog_density, fog_red, fog_green, fog_blue;
 165 qboolean fogenabled;
 166 qboolean oldgl_fogenable;
 167 void R_UpdateFog(void)
 168 {
 169         if (gamemode == GAME_NEHAHRA)
 170         {
 171                 if (gl_fogenable.integer)
 172                 {
 173                         oldgl_fogenable = true;
 174                         fog_density = gl_fogdensity.value;
 175                         fog_red = gl_fogred.value;
 176                         fog_green = gl_foggreen.value;
 177                         fog_blue = gl_fogblue.value;
 178                 }
 179                 else if (oldgl_fogenable)
 180                 {
 181                         oldgl_fogenable = false;
 182                         fog_density = 0;
 183                         fog_red = 0;
 184                         fog_green = 0;
 185                         fog_blue = 0;
 186                 }
 187         }
 188         if (fog_density)
 189         {
 190                 fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 191                 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 192                 fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 193         }
 194         if (fog_density)
 195         {
 196                 fogenabled = true;
 197                 fogdensity = -4000.0f / (fog_density * fog_density);
 198                 // fog color was already set
 199         }
 200         else
 201                 fogenabled = false;
 202 }
 203
 204 // FIXME: move this to client?
 205 void FOG_clear(void)
 206 {
 207         if (gamemode == GAME_NEHAHRA)
 208         {
 209                 Cvar_Set("gl_fogenable", "0");
 210                 Cvar_Set("gl_fogdensity", "0.2");
 211                 Cvar_Set("gl_fogred", "0.3");
 212                 Cvar_Set("gl_foggreen", "0.3");
 213                 Cvar_Set("gl_fogblue", "0.3");
 214         }
 215         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 216 }
 217
 218 // FIXME: move this to client?
 219 void FOG_registercvars(void)
 220 {
 221         if (gamemode == GAME_NEHAHRA)
 222         {
 223                 Cvar_RegisterVariable (&gl_fogenable);
 224                 Cvar_RegisterVariable (&gl_fogdensity);
 225                 Cvar_RegisterVariable (&gl_fogred);
 226                 Cvar_RegisterVariable (&gl_foggreen);
 227                 Cvar_RegisterVariable (&gl_fogblue);
 228                 Cvar_RegisterVariable (&gl_fogstart);
 229                 Cvar_RegisterVariable (&gl_fogend);
 230         }
 231 }
 232
 233 void gl_main_start(void)
 234 {
 235 }
 236
 237 void gl_main_shutdown(void)
 238 {
 239 }
 240
 241 extern void CL_ParseEntityLump(char *entitystring);
 242 void gl_main_newmap(void)
 243 {
 244         int l;
 245         char *entities, entname[MAX_QPATH];
 246         r_framecount = 1;
 247         if (cl.worldmodel)
 248         {
 249                 strcpy(entname, cl.worldmodel->name);
 250                 l = strlen(entname) - 4;
 251                 if (l >= 0 && !strcmp(entname + l, ".bsp"))
 252                 {
 253                         strcpy(entname + l, ".ent");
 254                         if ((entities = FS_LoadFile(entname, tempmempool, true)))
 255                         {
 256                                 CL_ParseEntityLump(entities);
 257                                 Mem_Free(entities);
 258                                 return;
 259                         }
 260                 }
 261                 if (cl.worldmodel->brush.entities)
 262                         CL_ParseEntityLump(cl.worldmodel->brush.entities);
 263         }
 264 }
 265
 266 void GL_Main_Init(void)
 267 {
 268         Matrix4x4_CreateIdentity(&r_identitymatrix);
 269 // FIXME: move this to client?
 270         FOG_registercvars();
 271         Cmd_AddCommand("timerefresh", R_TimeRefresh_f);
 272         Cvar_RegisterVariable(&r_showtris);
 273         Cvar_RegisterVariable(&r_drawentities);
 274         Cvar_RegisterVariable(&r_drawviewmodel);
 275         Cvar_RegisterVariable(&r_speeds);
 276         Cvar_RegisterVariable(&r_fullbrights);
 277         Cvar_RegisterVariable(&r_wateralpha);
 278         Cvar_RegisterVariable(&r_dynamic);
 279         Cvar_RegisterVariable(&r_fullbright);
 280         Cvar_RegisterVariable(&r_textureunits);
 281         Cvar_RegisterVariable(&r_lerpsprites);
 282         Cvar_RegisterVariable(&r_lerpmodels);
 283         Cvar_RegisterVariable(&r_waterscroll);
 284         Cvar_RegisterVariable(&r_watershader);
 285         Cvar_RegisterVariable(&r_drawcollisionbrushes);
 286         if (gamemode == GAME_NEHAHRA || gamemode == GAME_NEXUIZ || gamemode == GAME_TENEBRAE)
 287                 Cvar_SetValue("r_fullbrights", 0);
 288         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 289 }
 290
 291 static vec3_t r_farclip_origin;
 292 static vec3_t r_farclip_direction;
 293 static vec_t r_farclip_directiondist;
 294 static vec_t r_farclip_meshfarclip;
 295 static int r_farclip_directionbit0;
 296 static int r_farclip_directionbit1;
 297 static int r_farclip_directionbit2;
 298
 299 // enlarge farclip to accomodate box
 300 static void R_FarClip_Box(vec3_t mins, vec3_t maxs)
 301 {
 302         float d;
 303         d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
 304           + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
 305           + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
 306         if (r_farclip_meshfarclip < d)
 307                 r_farclip_meshfarclip = d;
 308 }
 309
 310 // return farclip value
 311 static float R_FarClip(vec3_t origin, vec3_t direction, vec_t startfarclip)
 312 {
 313         int i;
 314
 315         VectorCopy(origin, r_farclip_origin);
 316         VectorCopy(direction, r_farclip_direction);
 317         r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
 318         r_farclip_directionbit0 = r_farclip_direction[0] < 0;
 319         r_farclip_directionbit1 = r_farclip_direction[1] < 0;
 320         r_farclip_directionbit2 = r_farclip_direction[2] < 0;
 321         r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
 322
 323         if (cl.worldmodel)
 324                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 325         for (i = 0;i < r_refdef.numentities;i++)
 326                 R_FarClip_Box(r_refdef.entities[i]->mins, r_refdef.entities[i]->maxs);
 327
 328         return r_farclip_meshfarclip - r_farclip_directiondist;
 329 }
 330
 331 extern void R_Textures_Init(void);
 332 extern void Mod_RenderInit(void);
 333 extern void GL_Draw_Init(void);
 334 extern void GL_Main_Init(void);
 335 extern void R_Shadow_Init(void);
 336 extern void GL_Models_Init(void);
 337 extern void R_Sky_Init(void);
 338 extern void GL_Surf_Init(void);
 339 extern void R_Crosshairs_Init(void);
 340 extern void R_Light_Init(void);
 341 extern void R_Particles_Init(void);
 342 extern void R_Explosion_Init(void);
 343 extern void ui_init(void);
 344 extern void gl_backend_init(void);
 345 extern void Sbar_Init(void);
 346 extern void R_LightningBeams_Init(void);
 347
 348 void Render_Init(void)
 349 {
 350         R_Textures_Init();
 351         Mod_RenderInit();
 352         gl_backend_init();
 353         R_MeshQueue_Init();
 354         GL_Draw_Init();
 355         GL_Main_Init();
 356         R_Shadow_Init();
 357         GL_Models_Init();
 358         R_Sky_Init();
 359         GL_Surf_Init();
 360         R_Crosshairs_Init();
 361         R_Light_Init();
 362         R_Particles_Init();
 363         R_Explosion_Init();
 364         //ui_init();
 365         UI_Init();
 366         Sbar_Init();
 367         R_LightningBeams_Init();
 368 }
 369
 370 /*
 371 ===============
 372 GL_Init
 373 ===============
 374 */
 375 extern char *ENGINE_EXTENSIONS;
 376 void GL_Init (void)
 377 {
 378         VID_CheckExtensions();
 379
 380         // LordHavoc: report supported extensions
 381         Con_DPrintf("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 382 }
 383
 384 int R_CullBox(const vec3_t mins, const vec3_t maxs)
 385 {
 386         int i;
 387         mplane_t *p;
 388         for (i = 0;i < 4;i++)
 389         {
 390                 p = frustum + i;
 391                 switch(p->signbits)
 392                 {
 393                 default:
 394                 case 0:
 395                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
 396                                 return true;
 397                         break;
 398                 case 1:
 399                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
 400                                 return true;
 401                         break;
 402                 case 2:
 403                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
 404                                 return true;
 405                         break;
 406                 case 3:
 407                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
 408                                 return true;
 409                         break;
 410                 case 4:
 411                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
 412                                 return true;
 413                         break;
 414                 case 5:
 415                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
 416                                 return true;
 417                         break;
 418                 case 6:
 419                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
 420                                 return true;
 421                         break;
 422                 case 7:
 423                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
 424                                 return true;
 425                         break;
 426                 }
 427         }
 428         return false;
 429 }
 430
 431 //==================================================================================
 432
 433 static void R_MarkEntities (void)
 434 {
 435         int i;
 436         entity_render_t *ent;
 437
 438         ent = &cl_entities[0].render;
 439         Matrix4x4_CreateIdentity(&ent->matrix);
 440         Matrix4x4_CreateIdentity(&ent->inversematrix);
 441
 442         if (!r_drawentities.integer)
 443                 return;
 444
 445         for (i = 0;i < r_refdef.numentities;i++)
 446         {
 447                 ent = r_refdef.entities[i];
 448                 Mod_CheckLoaded(ent->model);
 449                 // some of the renderer still relies on origin...
 450                 Matrix4x4_OriginFromMatrix(&ent->matrix, ent->origin);
 451                 // some of the renderer still relies on scale...
 452                 ent->scale = Matrix4x4_ScaleFromMatrix(&ent->matrix);
 453                 R_LerpAnimation(ent);
 454                 R_UpdateEntLights(ent);
 455                 if ((chase_active.integer || !(ent->flags & RENDER_EXTERIORMODEL))
 456                  && !VIS_CullBox(ent->mins, ent->maxs)
 457                  && (!envmap || !(ent->flags & (RENDER_VIEWMODEL | RENDER_EXTERIORMODEL))))
 458                         ent->visframe = r_framecount;
 459         }
 460 }
 461
 462 // only used if skyrendermasked, and normally returns false
 463 int R_DrawBrushModelsSky (void)
 464 {
 465         int i, sky;
 466         entity_render_t *ent;
 467
 468         if (!r_drawentities.integer)
 469                 return false;
 470
 471         sky = false;
 472         for (i = 0;i < r_refdef.numentities;i++)
 473         {
 474                 ent = r_refdef.entities[i];
 475                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 476                 {
 477                         ent->model->DrawSky(ent);
 478                         sky = true;
 479                 }
 480         }
 481         return sky;
 482 }
 483
 484 void R_DrawNoModel(entity_render_t *ent);
 485 void R_DrawModels(void)
 486 {
 487         int i;
 488         entity_render_t *ent;
 489
 490         if (!r_drawentities.integer)
 491                 return;
 492
 493         for (i = 0;i < r_refdef.numentities;i++)
 494         {
 495                 ent = r_refdef.entities[i];
 496                 if (ent->visframe == r_framecount)
 497                 {
 498                         if (ent->model && ent->model->Draw != NULL)
 499                                 ent->model->Draw(ent);
 500                         else
 501                                 R_DrawNoModel(ent);
 502                 }
 503         }
 504 }
 505
 506 static void R_SetFrustum(void)
 507 {
 508         // break apart the view matrix into vectors for various purposes
 509         Matrix4x4_ToVectors(&r_view_matrix, r_viewforward, r_viewleft, r_viewup, r_vieworigin);
 510         VectorNegate(r_viewleft, r_viewright);
 511
 512         // LordHavoc: note to all quake engine coders, the special case for 90
 513         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
 514         // disabled as well.
 515
 516         // rotate R_VIEWFORWARD right by FOV_X/2 degrees
 517         RotatePointAroundVector( frustum[0].normal, r_viewup, r_viewforward, -(90 - r_view_fov_x / 2));
 518         frustum[0].dist = DotProduct (r_vieworigin, frustum[0].normal);
 519         PlaneClassify(&frustum[0]);
 520
 521         // rotate R_VIEWFORWARD left by FOV_X/2 degrees
 522         RotatePointAroundVector( frustum[1].normal, r_viewup, r_viewforward, (90 - r_view_fov_x / 2));
 523         frustum[1].dist = DotProduct (r_vieworigin, frustum[1].normal);
 524         PlaneClassify(&frustum[1]);
 525
 526         // rotate R_VIEWFORWARD up by FOV_X/2 degrees
 527         RotatePointAroundVector( frustum[2].normal, r_viewleft, r_viewforward, -(90 - r_view_fov_y / 2));
 528         frustum[2].dist = DotProduct (r_vieworigin, frustum[2].normal);
 529         PlaneClassify(&frustum[2]);
 530
 531         // rotate R_VIEWFORWARD down by FOV_X/2 degrees
 532         RotatePointAroundVector( frustum[3].normal, r_viewleft, r_viewforward, (90 - r_view_fov_y / 2));
 533         frustum[3].dist = DotProduct (r_vieworigin, frustum[3].normal);
 534         PlaneClassify(&frustum[3]);
 535 }
 536
 537 static void R_BlendView(void)
 538 {
 539         rmeshstate_t m;
 540         float r;
 541         float vertex3f[3*3];
 542
 543         if (r_refdef.viewblend[3] < 0.01f)
 544                 return;
 545
 546         R_Mesh_Matrix(&r_identitymatrix);
 547
 548         memset(&m, 0, sizeof(m));
 549         m.pointer_vertex = vertex3f;
 550         R_Mesh_State(&m);
 551
 552         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 553         GL_DepthMask(true);
 554         GL_DepthTest(false); // magic
 555         GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
 556         r = 64;
 557         vertex3f[0] = r_vieworigin[0] + r_viewforward[0] * 1.5 + r_viewleft[0] * r - r_viewup[0] * r;
 558         vertex3f[1] = r_vieworigin[1] + r_viewforward[1] * 1.5 + r_viewleft[1] * r - r_viewup[1] * r;
 559         vertex3f[2] = r_vieworigin[2] + r_viewforward[2] * 1.5 + r_viewleft[2] * r - r_viewup[2] * r;
 560         vertex3f[3] = r_vieworigin[0] + r_viewforward[0] * 1.5 + r_viewleft[0] * r + r_viewup[0] * r * 3;
 561         vertex3f[4] = r_vieworigin[1] + r_viewforward[1] * 1.5 + r_viewleft[1] * r + r_viewup[1] * r * 3;
 562         vertex3f[5] = r_vieworigin[2] + r_viewforward[2] * 1.5 + r_viewleft[2] * r + r_viewup[2] * r * 3;
 563         vertex3f[6] = r_vieworigin[0] + r_viewforward[0] * 1.5 - r_viewleft[0] * r * 3 - r_viewup[0] * r;
 564         vertex3f[7] = r_vieworigin[1] + r_viewforward[1] * 1.5 - r_viewleft[1] * r * 3 - r_viewup[1] * r;
 565         vertex3f[8] = r_vieworigin[2] + r_viewforward[2] * 1.5 - r_viewleft[2] * r * 3 - r_viewup[2] * r;
 566         R_Mesh_Draw(3, 1, polygonelements);
 567 }
 568
 569 void R_RenderScene(void);
 570
 571 /*
 572 ================
 573 R_RenderView
 574 ================
 575 */
 576 void R_RenderView(void)
 577 {
 578         if (!r_refdef.entities/* || !cl.worldmodel*/)
 579                 return; //Host_Error ("R_RenderView: NULL worldmodel");
 580
 581         r_view_width = bound(0, r_refdef.width, vid.realwidth);
 582         r_view_height = bound(0, r_refdef.height, vid.realheight);
 583         r_view_depth = 1;
 584         r_view_x = bound(0, r_refdef.x, vid.realwidth - r_refdef.width);
 585         r_view_y = bound(0, r_refdef.y, vid.realheight - r_refdef.height);
 586         r_view_z = 0;
 587         r_view_fov_x = bound(1, r_refdef.fov_x, 170);
 588         r_view_fov_y = bound(1, r_refdef.fov_y, 170);
 589         r_view_matrix = r_refdef.viewentitymatrix;
 590         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
 591         r_rtworld = r_shadow_realtime_world.integer;
 592         r_rtworldshadows = r_rtworld && r_shadow_realtime_world_shadows.integer;
 593         r_rtdlight = r_shadow_realtime_world.integer || r_shadow_realtime_dlight.integer;
 594         r_rtdlightshadows = r_rtdlight && (r_rtworld ? r_shadow_realtime_world_dlightshadows.integer : r_shadow_realtime_dlight_shadows.integer);
 595         r_lightmapintensity = r_rtworld ? r_shadow_realtime_world_lightmaps.value : 1;
 596
 597         // GL is weird because it's bottom to top, r_view_y is top to bottom
 598         qglViewport(r_view_x, vid.realheight - (r_view_y + r_view_height), r_view_width, r_view_height);
 599         GL_Scissor(r_view_x, r_view_y, r_view_width, r_view_height);
 600         GL_ScissorTest(true);
 601         GL_DepthMask(true);
 602         R_ClearScreen();
 603         R_Textures_Frame();
 604         R_UpdateFog();
 605         R_UpdateLights();
 606         R_TimeReport("setup");
 607
 608         qglDepthFunc(GL_LEQUAL);
 609         qglPolygonOffset(0, 0);
 610         qglEnable(GL_POLYGON_OFFSET_FILL);
 611
 612         R_RenderScene();
 613
 614         qglPolygonOffset(0, 0);
 615         qglDisable(GL_POLYGON_OFFSET_FILL);
 616
 617         R_BlendView();
 618         R_TimeReport("blendview");
 619
 620         GL_Scissor(0, 0, vid.realwidth, vid.realheight);
 621         GL_ScissorTest(false);
 622 }
 623
 624 extern void R_DrawLightningBeams (void);
 625 void R_RenderScene(void)
 626 {
 627         entity_render_t *world;
 628
 629         // don't let sound skip if going slow
 630         if (!intimerefresh && !r_speeds.integer)
 631                 S_ExtraUpdate ();
 632
 633         r_framecount++;
 634
 635         R_MeshQueue_BeginScene();
 636
 637         GL_ShowTrisColor(0.05, 0.05, 0.05, 1);
 638
 639         R_SetFrustum();
 640
 641         r_farclip = R_FarClip(r_vieworigin, r_viewforward, 768.0f) + 256.0f;
 642         if (gl_stencil && (r_rtworldshadows || r_rtdlightshadows))
 643                 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_view_fov_x, r_view_fov_y, 1.0f);
 644         else
 645                 GL_SetupView_Mode_Perspective(r_view_fov_x, r_view_fov_y, 1.0f, r_farclip);
 646
 647         GL_SetupView_Orientation_FromEntity(&r_view_matrix);
 648
 649         R_SkyStartFrame();
 650
 651         if (cl.worldmodel && cl.worldmodel->brush.FatPVS)
 652                 cl.worldmodel->brush.FatPVS(cl.worldmodel, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
 653         world = &cl_entities[0].render;
 654         R_WorldVisibility(world);
 655         R_TimeReport("worldvis");
 656
 657         R_MarkEntities();
 658         R_TimeReport("markentity");
 659
 660         R_Shadow_UpdateWorldLightSelection();
 661
 662         // don't let sound skip if going slow
 663         if (!intimerefresh && !r_speeds.integer)
 664                 S_ExtraUpdate ();
 665
 666         GL_ShowTrisColor(0.025, 0.025, 0, 1);
 667         if (world->model && world->model->DrawSky)
 668         {
 669                 world->model->DrawSky(world);
 670                 R_TimeReport("worldsky");
 671         }
 672
 673         if (R_DrawBrushModelsSky())
 674                 R_TimeReport("bmodelsky");
 675
 676         GL_ShowTrisColor(0.05, 0.05, 0.05, 1);
 677         if (world->model && world->model->Draw)
 678         {
 679                 world->model->Draw(world);
 680                 R_TimeReport("world");
 681         }
 682
 683         // don't let sound skip if going slow
 684         if (!intimerefresh && !r_speeds.integer)
 685                 S_ExtraUpdate ();
 686
 687         GL_ShowTrisColor(0, 0.015, 0, 1);
 688
 689         R_DrawModels();
 690         R_TimeReport("models");
 691
 692         // don't let sound skip if going slow
 693         if (!intimerefresh && !r_speeds.integer)
 694                 S_ExtraUpdate ();
 695
 696         GL_ShowTrisColor(0, 0, 0.033, 1);
 697         R_ShadowVolumeLighting(false);
 698         R_TimeReport("rtlights");
 699
 700         // don't let sound skip if going slow
 701         if (!intimerefresh && !r_speeds.integer)
 702                 S_ExtraUpdate ();
 703
 704         GL_ShowTrisColor(0.1, 0, 0, 1);
 705
 706         R_DrawLightningBeams();
 707         R_TimeReport("lightning");
 708
 709         R_DrawParticles();
 710         R_TimeReport("particles");
 711
 712         R_DrawExplosions();
 713         R_TimeReport("explosions");
 714
 715         R_MeshQueue_RenderTransparent();
 716         R_TimeReport("drawtrans");
 717
 718         R_DrawCoronas();
 719         R_TimeReport("coronas");
 720
 721         R_DrawWorldCrosshair();
 722         R_TimeReport("crosshair");
 723
 724         R_MeshQueue_Render();
 725         R_MeshQueue_EndScene();
 726
 727         if (r_shadow_visiblevolumes.integer && !r_showtrispass)
 728         {
 729                 R_ShadowVolumeLighting(true);
 730                 R_TimeReport("shadowvolume");
 731         }
 732
 733         GL_ShowTrisColor(0.05, 0.05, 0.05, 1);
 734
 735         // don't let sound skip if going slow
 736         if (!intimerefresh && !r_speeds.integer)
 737                 S_ExtraUpdate ();
 738 }
 739
 740 /*
 741 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
 742 {
 743         int i;
 744         float *v, *c, f1, f2, diff[3], vertex3f[8*3], color4f[8*4];
 745         rmeshstate_t m;
 746         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 747         GL_DepthMask(false);
 748         GL_DepthTest(true);
 749         R_Mesh_Matrix(&r_identitymatrix);
 750
 751         vertex3f[ 0] = mins[0];vertex3f[ 1] = mins[1];vertex3f[ 2] = mins[2];
 752         vertex3f[ 3] = maxs[0];vertex3f[ 4] = mins[1];vertex3f[ 5] = mins[2];
 753         vertex3f[ 6] = mins[0];vertex3f[ 7] = maxs[1];vertex3f[ 8] = mins[2];
 754         vertex3f[ 9] = maxs[0];vertex3f[10] = maxs[1];vertex3f[11] = mins[2];
 755         vertex3f[12] = mins[0];vertex3f[13] = mins[1];vertex3f[14] = maxs[2];
 756         vertex3f[15] = maxs[0];vertex3f[16] = mins[1];vertex3f[17] = maxs[2];
 757         vertex3f[18] = mins[0];vertex3f[19] = maxs[1];vertex3f[20] = maxs[2];
 758         vertex3f[21] = maxs[0];vertex3f[22] = maxs[1];vertex3f[23] = maxs[2];
 759         R_FillColors(color, 8, cr, cg, cb, ca);
 760         if (fogenabled)
 761         {
 762                 for (i = 0, v = vertex, c = color;i < 8;i++, v += 4, c += 4)
 763                 {
 764                         VectorSubtract(v, r_vieworigin, diff);
 765                         f2 = exp(fogdensity/DotProduct(diff, diff));
 766                         f1 = 1 - f2;
 767                         c[0] = c[0] * f1 + fogcolor[0] * f2;
 768                         c[1] = c[1] * f1 + fogcolor[1] * f2;
 769                         c[2] = c[2] * f1 + fogcolor[2] * f2;
 770                 }
 771         }
 772         memset(&m, 0, sizeof(m));
 773         m.pointer_vertex = vertex3f;
 774         m.pointer_color = color;
 775         R_Mesh_State(&m);
 776         R_Mesh_Draw(8, 12);
 777 }
 778 */
 779
 780 int nomodelelements[24] =
 781 {
 782         5, 2, 0,
 783         5, 1, 2,
 784         5, 0, 3,
 785         5, 3, 1,
 786         0, 2, 4,
 787         2, 1, 4,
 788         3, 0, 4,
 789         1, 3, 4
 790 };
 791
 792 float nomodelvertex3f[6*3] =
 793 {
 794         -16,   0,   0,
 795          16,   0,   0,
 796           0, -16,   0,
 797           0,  16,   0,
 798           0,   0, -16,
 799           0,   0,  16
 800 };
 801
 802 float nomodelcolor4f[6*4] =
 803 {
 804         0.0f, 0.0f, 0.5f, 1.0f,
 805         0.0f, 0.0f, 0.5f, 1.0f,
 806         0.0f, 0.5f, 0.0f, 1.0f,
 807         0.0f, 0.5f, 0.0f, 1.0f,
 808         0.5f, 0.0f, 0.0f, 1.0f,
 809         0.5f, 0.0f, 0.0f, 1.0f
 810 };
 811
 812 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
 813 {
 814         const entity_render_t *ent = calldata1;
 815         int i;
 816         float f1, f2, *c, diff[3];
 817         float color4f[6*4];
 818         rmeshstate_t m;
 819         R_Mesh_Matrix(&ent->matrix);
 820
 821         memset(&m, 0, sizeof(m));
 822         m.pointer_vertex = nomodelvertex3f;
 823
 824         if (ent->flags & EF_ADDITIVE)
 825         {
 826                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 827                 GL_DepthMask(false);
 828         }
 829         else if (ent->alpha < 1)
 830         {
 831                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 832                 GL_DepthMask(false);
 833         }
 834         else
 835         {
 836                 GL_BlendFunc(GL_ONE, GL_ZERO);
 837                 GL_DepthMask(true);
 838         }
 839         GL_DepthTest(true);
 840         if (fogenabled)
 841         {
 842                 memcpy(color4f, nomodelcolor4f, sizeof(float[6*4]));
 843                 m.pointer_color = color4f;
 844                 VectorSubtract(ent->origin, r_vieworigin, diff);
 845                 f2 = exp(fogdensity/DotProduct(diff, diff));
 846                 f1 = 1 - f2;
 847                 for (i = 0, c = color4f;i < 6;i++, c += 4)
 848                 {
 849                         c[0] = (c[0] * f1 + fogcolor[0] * f2);
 850                         c[1] = (c[1] * f1 + fogcolor[1] * f2);
 851                         c[2] = (c[2] * f1 + fogcolor[2] * f2);
 852                         c[3] *= ent->alpha;
 853                 }
 854         }
 855         else if (ent->alpha != 1)
 856         {
 857                 memcpy(color4f, nomodelcolor4f, sizeof(float[6*4]));
 858                 m.pointer_color = color4f;
 859                 for (i = 0, c = color4f;i < 6;i++, c += 4)
 860                         c[3] *= ent->alpha;
 861         }
 862         else
 863                 m.pointer_color = nomodelcolor4f;
 864         R_Mesh_State(&m);
 865         R_Mesh_Draw(6, 8, nomodelelements);
 866 }
 867
 868 void R_DrawNoModel(entity_render_t *ent)
 869 {
 870         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
 871                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
 872         //else
 873         //      R_DrawNoModelCallback(ent, 0);
 874 }
 875
 876 void R_CalcBeam_Vertex3f (float *vert, const vec3_t org1, const vec3_t org2, float width)
 877 {
 878         vec3_t right1, right2, diff, normal;
 879
 880         VectorSubtract (org2, org1, normal);
 881         VectorNormalizeFast (normal);
 882
 883         // calculate 'right' vector for start
 884         VectorSubtract (r_vieworigin, org1, diff);
 885         VectorNormalizeFast (diff);
 886         CrossProduct (normal, diff, right1);
 887
 888         // calculate 'right' vector for end
 889         VectorSubtract (r_vieworigin, org2, diff);
 890         VectorNormalizeFast (diff);
 891         CrossProduct (normal, diff, right2);
 892
 893         vert[ 0] = org1[0] + width * right1[0];
 894         vert[ 1] = org1[1] + width * right1[1];
 895         vert[ 2] = org1[2] + width * right1[2];
 896         vert[ 3] = org1[0] - width * right1[0];
 897         vert[ 4] = org1[1] - width * right1[1];
 898         vert[ 5] = org1[2] - width * right1[2];
 899         vert[ 6] = org2[0] - width * right2[0];
 900         vert[ 7] = org2[1] - width * right2[1];
 901         vert[ 8] = org2[2] - width * right2[2];
 902         vert[ 9] = org2[0] + width * right2[0];
 903         vert[10] = org2[1] + width * right2[1];
 904         vert[11] = org2[2] + width * right2[2];
 905 }
 906
 907 float spritetexcoord2f[4*2] = {0, 1, 0, 0, 1, 0, 1, 1};
 908
 909 void R_DrawSprite(int blendfunc1, int blendfunc2, rtexture_t *texture, int depthdisable, const vec3_t origin, const vec3_t left, const vec3_t up, float scalex1, float scalex2, float scaley1, float scaley2, float cr, float cg, float cb, float ca)
 910 {
 911         float diff[3];
 912         rmeshstate_t m;
 913
 914         if (fogenabled)
 915         {
 916                 VectorSubtract(origin, r_vieworigin, diff);
 917                 ca *= 1 - exp(fogdensity/DotProduct(diff,diff));
 918         }
 919
 920         R_Mesh_Matrix(&r_identitymatrix);
 921         GL_BlendFunc(blendfunc1, blendfunc2);
 922         GL_DepthMask(false);
 923         GL_DepthTest(!depthdisable);
 924
 925         varray_vertex3f[ 0] = origin[0] + left[0] * scalex2 + up[0] * scaley1;
 926         varray_vertex3f[ 1] = origin[1] + left[1] * scalex2 + up[1] * scaley1;
 927         varray_vertex3f[ 2] = origin[2] + left[2] * scalex2 + up[2] * scaley1;
 928         varray_vertex3f[ 3] = origin[0] + left[0] * scalex2 + up[0] * scaley2;
 929         varray_vertex3f[ 4] = origin[1] + left[1] * scalex2 + up[1] * scaley2;
 930         varray_vertex3f[ 5] = origin[2] + left[2] * scalex2 + up[2] * scaley2;
 931         varray_vertex3f[ 6] = origin[0] + left[0] * scalex1 + up[0] * scaley2;
 932         varray_vertex3f[ 7] = origin[1] + left[1] * scalex1 + up[1] * scaley2;
 933         varray_vertex3f[ 8] = origin[2] + left[2] * scalex1 + up[2] * scaley2;
 934         varray_vertex3f[ 9] = origin[0] + left[0] * scalex1 + up[0] * scaley1;
 935         varray_vertex3f[10] = origin[1] + left[1] * scalex1 + up[1] * scaley1;
 936         varray_vertex3f[11] = origin[2] + left[2] * scalex1 + up[2] * scaley1;
 937
 938         memset(&m, 0, sizeof(m));
 939         m.tex[0] = R_GetTexture(texture);
 940         m.pointer_texcoord[0] = spritetexcoord2f;
 941         m.pointer_vertex = varray_vertex3f;
 942         R_Mesh_State(&m);
 943         GL_Color(cr, cg, cb, ca);
 944         R_Mesh_Draw(4, 2, polygonelements);
 945 }
 946