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 //static qboolean       r_cache_thrash;         // compatability
  25
  26 entity_render_t *currentrenderentity;
  27
  28 int                     r_framecount;           // used for dlight push checking
  29
  30 mplane_t        frustum[4];
  31
  32 int                     c_brush_polys, c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
  33
  34 qboolean        envmap;                         // true during envmap command capture
  35
  36 // LordHavoc: moved all code related to particles into r_part.c
  37 //int                   particletexture;        // little dot for particles
  38 //int                   playertextures;         // up to 16 color translated skins
  39
  40 //
  41 // view origin
  42 //
  43 vec3_t  vup;
  44 vec3_t  vpn;
  45 vec3_t  vright;
  46 vec3_t  r_origin;
  47
  48 //float r_world_matrix[16];
  49 //float r_base_world_matrix[16];
  50
  51 //
  52 // screen size info
  53 //
  54 refdef_t        r_refdef;
  55
  56 mleaf_t         *r_viewleaf, *r_oldviewleaf;
  57
  58 unsigned short  d_lightstylevalue[256]; // 8.8 fraction of base light value
  59
  60 //cvar_t        r_norefresh = {0, "r_norefresh","0"};
  61 cvar_t  r_drawentities = {0, "r_drawentities","1"};
  62 cvar_t  r_drawviewmodel = {0, "r_drawviewmodel","1"};
  63 cvar_t  r_speeds = {0, "r_speeds","0"};
  64 cvar_t  r_speeds2 = {0, "r_speeds2","0"};
  65 cvar_t  r_fullbright = {0, "r_fullbright","0"};
  66 //cvar_t        r_lightmap = {0, "r_lightmap","0"};
  67 cvar_t  r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  68 cvar_t  r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  69 cvar_t  r_waterripple = {CVAR_SAVE, "r_waterripple","0"};
  70 cvar_t  r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  71
  72 cvar_t  gl_lightmode = {CVAR_SAVE, "gl_lightmode", "1"}; // LordHavoc: overbright lighting
  73 //cvar_t        r_dynamicbothsides = {CVAR_SAVE, "r_dynamicbothsides", "1"}; // LordHavoc: can disable dynamic lighting of backfaces, but quake maps are weird so it doesn't always work right...
  74
  75 cvar_t  gl_fogenable = {0, "gl_fogenable", "0"};
  76 cvar_t  gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  77 cvar_t  gl_fogred = {0, "gl_fogred","0.3"};
  78 cvar_t  gl_foggreen = {0, "gl_foggreen","0.3"};
  79 cvar_t  gl_fogblue = {0, "gl_fogblue","0.3"};
  80 cvar_t  gl_fogstart = {0, "gl_fogstart", "0"};
  81 cvar_t  gl_fogend = {0, "gl_fogend","0"};
  82
  83 cvar_t  r_ser = {CVAR_SAVE, "r_ser", "1"};
  84 cvar_t  gl_viewmodeldepthhack = {0, "gl_viewmodeldepthhack", "1"};
  85
  86 cvar_t r_multitexture = {0, "r_multitexture", "1"};
  87
  88 /*
  89 ====================
  90 R_TimeRefresh_f
  91
  92 For program optimization
  93 ====================
  94 */
  95 qboolean intimerefresh = 0;
  96 static void R_TimeRefresh_f (void)
  97 {
  98         int                     i;
  99         float           start, stop, time;
 100
 101         intimerefresh = 1;
 102         start = Sys_DoubleTime ();
 103         glDrawBuffer (GL_FRONT);
 104         for (i = 0;i < 128;i++)
 105         {
 106                 r_refdef.viewangles[0] = 0;
 107                 r_refdef.viewangles[1] = i/128.0*360.0;
 108                 r_refdef.viewangles[2] = 0;
 109                 R_RenderView();
 110         }
 111         glDrawBuffer  (GL_BACK);
 112
 113         stop = Sys_DoubleTime ();
 114         intimerefresh = 0;
 115         time = stop-start;
 116         Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
 117 }
 118
 119 extern cvar_t r_drawportals;
 120
 121 int R_VisibleCullBox (vec3_t mins, vec3_t maxs)
 122 {
 123         int sides;
 124         mnode_t *nodestack[8192], *node;
 125         int stack = 0;
 126
 127         if (R_CullBox(mins, maxs))
 128                 return true;
 129
 130         node = cl.worldmodel->nodes;
 131 loc0:
 132         if (node->contents < 0)
 133         {
 134                 if (((mleaf_t *)node)->visframe == r_framecount)
 135                         return false;
 136                 if (!stack)
 137                         return true;
 138                 node = nodestack[--stack];
 139                 goto loc0;
 140         }
 141
 142         sides = BOX_ON_PLANE_SIDE(mins, maxs, node->plane);
 143
 144 // recurse down the contacted sides
 145         if (sides & 1)
 146         {
 147                 if (sides & 2) // 3
 148                 {
 149                         // put second child on the stack for later examination
 150                         nodestack[stack++] = node->children[1];
 151                         node = node->children[0];
 152                         goto loc0;
 153                 }
 154                 else // 1
 155                 {
 156                         node = node->children[0];
 157                         goto loc0;
 158                 }
 159         }
 160         // 2
 161         node = node->children[1];
 162         goto loc0;
 163 }
 164
 165 qboolean lighthalf;
 166
 167 vec3_t fogcolor;
 168 vec_t fogdensity;
 169 float fog_density, fog_red, fog_green, fog_blue;
 170 qboolean fogenabled;
 171 qboolean oldgl_fogenable;
 172 void R_SetupFog(void)
 173 {
 174         if (gamemode == GAME_NEHAHRA)
 175         {
 176                 if (gl_fogenable.integer)
 177                 {
 178                         oldgl_fogenable = true;
 179                         fog_density = gl_fogdensity.value;
 180                         fog_red = gl_fogred.value;
 181                         fog_green = gl_foggreen.value;
 182                         fog_blue = gl_fogblue.value;
 183                 }
 184                 else if (oldgl_fogenable)
 185                 {
 186                         oldgl_fogenable = false;
 187                         fog_density = 0;
 188                         fog_red = 0;
 189                         fog_green = 0;
 190                         fog_blue = 0;
 191                 }
 192         }
 193         if (fog_density)
 194         {
 195                 fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 196                 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 197                 fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 198         }
 199         if (fog_density)
 200         {
 201                 fogenabled = true;
 202                 fogdensity = -4000.0f / (fog_density * fog_density);
 203                 // fog color was already set
 204         }
 205         else
 206                 fogenabled = false;
 207 }
 208
 209 // FIXME: move this to client?
 210 void FOG_clear(void)
 211 {
 212         if (gamemode == GAME_NEHAHRA)
 213         {
 214                 Cvar_Set("gl_fogenable", "0");
 215                 Cvar_Set("gl_fogdensity", "0.2");
 216                 Cvar_Set("gl_fogred", "0.3");
 217                 Cvar_Set("gl_foggreen", "0.3");
 218                 Cvar_Set("gl_fogblue", "0.3");
 219         }
 220         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 221 }
 222
 223 // FIXME: move this to client?
 224 void FOG_registercvars(void)
 225 {
 226         if (gamemode == GAME_NEHAHRA)
 227         {
 228                 Cvar_RegisterVariable (&gl_fogenable);
 229                 Cvar_RegisterVariable (&gl_fogdensity);
 230                 Cvar_RegisterVariable (&gl_fogred);
 231                 Cvar_RegisterVariable (&gl_foggreen);
 232                 Cvar_RegisterVariable (&gl_fogblue);
 233                 Cvar_RegisterVariable (&gl_fogstart);
 234                 Cvar_RegisterVariable (&gl_fogend);
 235         }
 236 }
 237
 238 void gl_main_start(void)
 239 {
 240 }
 241
 242 void gl_main_shutdown(void)
 243 {
 244 }
 245
 246 void gl_main_newmap(void)
 247 {
 248         r_framecount = 1;
 249 }
 250
 251 void GL_Main_Init(void)
 252 {
 253 // FIXME: move this to client?
 254         FOG_registercvars();
 255         Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
 256         Cvar_RegisterVariable (&r_drawentities);
 257         Cvar_RegisterVariable (&r_drawviewmodel);
 258         Cvar_RegisterVariable (&r_speeds);
 259         Cvar_RegisterVariable (&r_speeds2);
 260         Cvar_RegisterVariable (&gl_lightmode);
 261 //      Cvar_RegisterVariable (&r_dynamicwater);
 262 //      Cvar_RegisterVariable (&r_dynamicbothsides);
 263         Cvar_RegisterVariable (&r_fullbrights);
 264         Cvar_RegisterVariable (&r_wateralpha);
 265         Cvar_RegisterVariable (&r_dynamic);
 266         Cvar_RegisterVariable (&r_waterripple);
 267         Cvar_RegisterVariable (&r_fullbright);
 268         Cvar_RegisterVariable (&r_ser);
 269         Cvar_RegisterVariable (&gl_viewmodeldepthhack);
 270         Cvar_RegisterVariable (&r_multitexture);
 271         if (gamemode == GAME_NEHAHRA)
 272                 Cvar_SetValue("r_fullbrights", 0);
 273         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 274 }
 275
 276 /*
 277 ===============
 278 R_NewMap
 279 ===============
 280 */
 281 void CL_ParseEntityLump(char *entitystring);
 282 void R_NewMap (void)
 283 {
 284         int             i;
 285
 286         for (i=0 ; i<256 ; i++)
 287                 d_lightstylevalue[i] = 264;             // normal light value
 288
 289         r_viewleaf = NULL;
 290         if (cl.worldmodel->entities)
 291                 CL_ParseEntityLump(cl.worldmodel->entities);
 292         R_Modules_NewMap();
 293 }
 294
 295 extern void R_Textures_Init(void);
 296 extern void Mod_RenderInit(void);
 297 extern void GL_Draw_Init(void);
 298 extern void GL_Main_Init(void);
 299 extern void GL_Models_Init(void);
 300 extern void R_Sky_Init(void);
 301 extern void GL_Surf_Init(void);
 302 extern void GL_Screen_Init(void);
 303 extern void R_Crosshairs_Init(void);
 304 extern void R_Light_Init(void);
 305 extern void R_Particles_Init(void);
 306 extern void R_Explosion_Init(void);
 307 extern void R_Clip_Init(void);
 308 extern void ui_init(void);
 309 extern void gl_backend_init(void);
 310
 311 void Render_Init(void)
 312 {
 313         R_Modules_Shutdown();
 314         R_Textures_Init();
 315         Mod_RenderInit();
 316         gl_backend_init();
 317         R_Clip_Init();
 318         GL_Draw_Init();
 319         GL_Main_Init();
 320         GL_Models_Init();
 321         R_Sky_Init();
 322         GL_Surf_Init();
 323         GL_Screen_Init();
 324         R_Crosshairs_Init();
 325         R_Light_Init();
 326         R_Particles_Init();
 327         R_Explosion_Init();
 328         R_Decals_Init();
 329         ui_init();
 330         R_Modules_Start();
 331 }
 332
 333 /*
 334 ===============
 335 GL_Init
 336 ===============
 337 */
 338 extern char *ENGINE_EXTENSIONS;
 339 void GL_Init (void)
 340 {
 341         gl_vendor = glGetString (GL_VENDOR);
 342         Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
 343         gl_renderer = glGetString (GL_RENDERER);
 344         Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
 345
 346         gl_version = glGetString (GL_VERSION);
 347         Con_Printf ("GL_VERSION: %s\n", gl_version);
 348         gl_extensions = glGetString (GL_EXTENSIONS);
 349         Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
 350
 351 //      Con_Printf ("%s %s\n", gl_renderer, gl_version);
 352
 353         VID_CheckExtensions();
 354
 355         // LordHavoc: report supported extensions
 356         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 357
 358         glCullFace(GL_FRONT);
 359         glEnable(GL_TEXTURE_2D);
 360
 361 //      glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
 362 }
 363
 364
 365 //==================================================================================
 366
 367 void R_Entity_Callback(void *data, void *junk)
 368 {
 369         ((entity_render_t *)data)->visframe = r_framecount;
 370 }
 371
 372 static void R_MarkEntities (void)
 373 {
 374         int             i;
 375         vec3_t  v;
 376
 377         if (!r_drawentities.integer)
 378                 return;
 379
 380         for (i = 0;i < cl_numvisedicts;i++)
 381         {
 382                 currentrenderentity = &cl_visedicts[i]->render;
 383                 Mod_CheckLoaded(currentrenderentity->model);
 384
 385                 // move view-relative models to where they should be
 386                 if (currentrenderentity->flags & RENDER_VIEWMODEL)
 387                 {
 388                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 389                         currentrenderentity->flags -= RENDER_VIEWMODEL;
 390                         // transform origin
 391                         VectorCopy(currentrenderentity->origin, v);
 392                         currentrenderentity->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 393                         currentrenderentity->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 394                         currentrenderentity->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 395                         // adjust angles
 396                         VectorAdd(currentrenderentity->angles, r_refdef.viewangles, currentrenderentity->angles);
 397                 }
 398
 399                 if (currentrenderentity->angles[0] || currentrenderentity->angles[2])
 400                 {
 401                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmins, currentrenderentity->mins);
 402                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmaxs, currentrenderentity->maxs);
 403                 }
 404                 else if (currentrenderentity->angles[1])
 405                 {
 406                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmins, currentrenderentity->mins);
 407                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmaxs, currentrenderentity->maxs);
 408                 }
 409                 else
 410                 {
 411                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmins, currentrenderentity->mins);
 412                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmaxs, currentrenderentity->maxs);
 413                 }
 414                 if (R_VisibleCullBox(currentrenderentity->mins, currentrenderentity->maxs))
 415                         continue;
 416
 417                 R_LerpAnimation(currentrenderentity);
 418                 if (r_ser.integer)
 419                         currentrenderentity->model->SERAddEntity();
 420                 else
 421                         currentrenderentity->visframe = r_framecount;
 422         }
 423 }
 424
 425 // only used if skyrendermasked, and normally returns false
 426 int R_DrawBModelSky (void)
 427 {
 428         int             i, sky = false;
 429
 430         if (!r_drawentities.integer)
 431                 return false;
 432
 433         for (i = 0;i < cl_numvisedicts;i++)
 434         {
 435                 currentrenderentity = &cl_visedicts[i]->render;
 436                 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->DrawSky)
 437                 {
 438                         currentrenderentity->model->DrawSky();
 439                         sky = true;
 440                 }
 441         }
 442         return sky;
 443 }
 444
 445 void R_DrawModels (void)
 446 {
 447         int             i;
 448
 449         if (!r_drawentities.integer)
 450                 return;
 451
 452         for (i = 0;i < cl_numvisedicts;i++)
 453         {
 454                 currentrenderentity = &cl_visedicts[i]->render;
 455                 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->Draw)
 456                         currentrenderentity->model->Draw();
 457         }
 458 }
 459
 460 /*
 461 =============
 462 R_DrawViewModel
 463 =============
 464 */
 465 void R_DrawViewModel (void)
 466 {
 467         // FIXME: move these checks to client
 468         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 469                 return;
 470
 471         currentrenderentity = &cl.viewent.render;
 472         Mod_CheckLoaded(currentrenderentity->model);
 473
 474         R_LerpAnimation(currentrenderentity);
 475
 476         // hack the depth range to prevent view model from poking into walls
 477         if (gl_viewmodeldepthhack.integer)
 478         {
 479                 R_Mesh_Render();
 480                 glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
 481         }
 482         currentrenderentity->model->Draw();
 483         if (gl_viewmodeldepthhack.integer)
 484         {
 485                 R_Mesh_Render();
 486                 glDepthRange (gldepthmin, gldepthmax);
 487         }
 488 }
 489
 490 static void R_SetFrustum (void)
 491 {
 492         int             i;
 493
 494         // LordHavoc: note to all quake engine coders, the special case for 90
 495         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
 496         // disabled as well.
 497         // rotate VPN right by FOV_X/2 degrees
 498         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 499         // rotate VPN left by FOV_X/2 degrees
 500         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 501         // rotate VPN up by FOV_X/2 degrees
 502         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 503         // rotate VPN down by FOV_X/2 degrees
 504         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 505
 506
 507         for (i=0 ; i<4 ; i++)
 508         {
 509                 frustum[i].type = PLANE_ANYZ;
 510                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 511                 PlaneClassify(&frustum[i]);
 512         }
 513 }
 514
 515 /*
 516 ===============
 517 R_SetupFrame
 518 ===============
 519 */
 520 static void R_SetupFrame (void)
 521 {
 522 // don't allow cheats in multiplayer
 523         if (cl.maxclients > 1)
 524         {
 525                 if (r_fullbright.integer != 0)
 526                         Cvar_Set ("r_fullbright", "0");
 527                 if (r_ambient.value != 0)
 528                         Cvar_Set ("r_ambient", "0");
 529         }
 530         if (r_multitexture.integer && gl_textureunits < 2)
 531                 Cvar_SetValue("r_multitexture", 0);
 532
 533         r_framecount++;
 534
 535 // build the transformation matrix for the given view angles
 536         VectorCopy (r_refdef.vieworg, r_origin);
 537
 538         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 539
 540 // current viewleaf
 541         r_oldviewleaf = r_viewleaf;
 542         r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
 543
 544         V_SetContentsColor (r_viewleaf->contents);
 545         V_CalcBlend ();
 546
 547 //      r_cache_thrash = false;
 548
 549         c_brush_polys = 0;
 550         c_alias_polys = 0;
 551         c_light_polys = 0;
 552         c_faces = 0;
 553         c_nodes = 0;
 554         c_leafs = 0;
 555         c_models = 0;
 556         c_bmodels = 0;
 557         c_sprites = 0;
 558         c_particles = 0;
 559 //      c_dlights = 0;
 560
 561         R_AnimateLight ();
 562 }
 563
 564
 565 static void MYgluPerspective(GLdouble fovx, GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar )
 566 {
 567         GLdouble xmax, ymax;
 568
 569         xmax = zNear * tan( fovx * M_PI / 360.0 ) * aspect;
 570         ymax = zNear * tan( fovy * M_PI / 360.0 );
 571
 572         if (r_viewleaf->contents != CONTENTS_EMPTY && r_viewleaf->contents != CONTENTS_SOLID)
 573         {
 574                 xmax *= (sin(cl.time * 4.7) * 0.03 + 0.97);
 575                 ymax *= (sin(cl.time * 3.0) * 0.03 + 0.97);
 576         }
 577
 578         glFrustum(-xmax, xmax, -ymax, ymax, zNear, zFar );
 579 }
 580
 581
 582 /*
 583 =============
 584 R_SetupGL
 585 =============
 586 */
 587 static void R_SetupGL (void)
 588 {
 589         if (!r_render.integer)
 590                 return;
 591
 592 //      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // LordHavoc: moved to SCR_UpdateScreen
 593         gldepthmin = 0;
 594         gldepthmax = 1;
 595         glDepthFunc (GL_LEQUAL);
 596
 597         glDepthRange (gldepthmin, gldepthmax);
 598
 599         // update farclip based on previous frame
 600         r_farclip = r_newfarclip;
 601
 602         // set up viewpoint
 603         glMatrixMode(GL_PROJECTION);
 604         glLoadIdentity ();
 605
 606         // y is weird beause OpenGL is bottom to top, we use top to bottom
 607         glViewport(r_refdef.x, vid.realheight - (r_refdef.y + r_refdef.height), r_refdef.width, r_refdef.height);
 608 //      yfov = 2*atan((float)r_refdef.height/r_refdef.width)*180/M_PI;
 609         MYgluPerspective (r_refdef.fov_x, r_refdef.fov_y, r_refdef.width/r_refdef.height, 4, r_farclip);
 610
 611         glCullFace(GL_FRONT);
 612
 613         glMatrixMode(GL_MODELVIEW);
 614         glLoadIdentity ();
 615
 616         glRotatef (-90,  1, 0, 0);          // put Z going up
 617         glRotatef (90,  0, 0, 1);           // put Z going up
 618         glRotatef (-r_refdef.viewangles[2],  1, 0, 0);
 619         glRotatef (-r_refdef.viewangles[0],  0, 1, 0);
 620         glRotatef (-r_refdef.viewangles[1],  0, 0, 1);
 621         glTranslatef (-r_refdef.vieworg[0],  -r_refdef.vieworg[1],  -r_refdef.vieworg[2]);
 622
 623 //      glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix);
 624
 625         //
 626         // set drawing parms
 627         //
 628 //      if (gl_cull.integer)
 629                 glEnable(GL_CULL_FACE);
 630 //      else
 631 //              glDisable(GL_CULL_FACE);
 632
 633         glEnable(GL_BLEND); // was Disable
 634         glEnable(GL_DEPTH_TEST);
 635         glDepthMask(1);
 636 }
 637
 638 static void R_BlendView(void)
 639 {
 640         if (!r_render.integer)
 641                 return;
 642
 643         if (v_blend[3] < 0.01f)
 644                 return;
 645
 646         glMatrixMode(GL_PROJECTION);
 647         glLoadIdentity ();
 648         glOrtho  (0, 1, 1, 0, -99999, 99999);
 649         glMatrixMode(GL_MODELVIEW);
 650         glLoadIdentity ();
 651         glDisable (GL_DEPTH_TEST);
 652         glDisable (GL_CULL_FACE);
 653         glDisable(GL_TEXTURE_2D);
 654         glEnable(GL_BLEND);
 655         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 656         glBegin (GL_TRIANGLES);
 657         if (lighthalf)
 658                 glColor4f (v_blend[0] * 0.5f, v_blend[1] * 0.5f, v_blend[2] * 0.5f, v_blend[3]);
 659         else
 660                 glColor4fv (v_blend);
 661         glVertex2f (-5, -5);
 662         glVertex2f (10, -5);
 663         glVertex2f (-5, 10);
 664         glEnd ();
 665
 666         glEnable (GL_CULL_FACE);
 667         glEnable (GL_DEPTH_TEST);
 668         glDisable(GL_BLEND);
 669         glEnable(GL_TEXTURE_2D);
 670 }
 671
 672 /*
 673 ================
 674 R_RenderView
 675
 676 r_refdef must be set before the first call
 677 ================
 678 */
 679 void R_RenderView (void)
 680 {
 681         if (!cl.worldmodel)
 682                 Host_Error ("R_RenderView: NULL worldmodel");
 683
 684         // FIXME: move to client
 685         R_MoveExplosions();
 686         R_TimeReport("mexplosion");
 687
 688         R_SetupFrame();
 689         R_SetFrustum();
 690         R_SetupGL();
 691         R_SetupFog();
 692         R_SkyStartFrame();
 693         R_Mesh_Clear();
 694         if (r_ser.integer)
 695                 R_Clip_StartFrame();
 696         R_BuildLightList();
 697
 698         R_TimeReport("setup");
 699
 700         R_DrawWorld();
 701         R_TimeReport("worldnode");
 702
 703         R_MarkEntities();
 704         R_TimeReport("markentity");
 705
 706         if (r_ser.integer)
 707         {
 708                 R_Clip_EndFrame();
 709                 R_TimeReport("hiddensurf");
 710         }
 711
 712         R_MarkWorldLights();
 713         R_TimeReport("marklights");
 714
 715         if (skyrendermasked && R_DrawBModelSky())
 716         {
 717                 R_TimeReport("bmodelsky");
 718         }
 719
 720         R_SetupForWorldRendering();
 721         R_PrepareSurfaces();
 722         R_TimeReport("surfprep");
 723
 724         R_DrawSurfacesAll();
 725         R_TimeReport("surfdraw");
 726
 727         if (r_drawportals.integer)
 728         {
 729                 R_DrawPortals();
 730                 R_TimeReport("portals");
 731         }
 732
 733         // don't let sound skip if going slow
 734         if (!intimerefresh && !r_speeds2.integer)
 735                 S_ExtraUpdate ();
 736
 737         R_DrawViewModel();
 738         R_DrawModels();
 739         R_TimeReport("models");
 740
 741         R_DrawDecals();
 742         R_TimeReport("decals");
 743
 744         R_DrawParticles();
 745         R_TimeReport("particles");
 746
 747         R_DrawExplosions();
 748         R_TimeReport("explosions");
 749
 750         // draw transparent meshs
 751         R_Mesh_AddTransparent();
 752         R_TimeReport("sorttrans");
 753
 754         // render any queued meshs
 755         R_Mesh_Render();
 756         R_TimeReport("meshrender");
 757
 758         R_BlendView();
 759         R_TimeReport("blendview");
 760
 761         Mem_CheckSentinelsGlobal();
 762         R_TimeReport("memtest");
 763 }