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 entity_t        r_worldentity;
  25
  26 qboolean        r_cache_thrash;         // compatability
  27
  28 vec3_t          modelorg, r_entorigin;
  29 entity_t        *currententity;
  30
  31 int                     r_framecount;           // used for dlight push checking
  32
  33 mplane_t        frustum[4];
  34
  35 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;
  36
  37 qboolean        envmap;                         // true during envmap command capture
  38
  39 // LordHavoc: moved all code related to particles into r_part.c
  40 //int                   particletexture;        // little dot for particles
  41 //int                   playertextures;         // up to 16 color translated skins
  42
  43 //
  44 // view origin
  45 //
  46 vec3_t  vup;
  47 vec3_t  vpn;
  48 vec3_t  vright;
  49 vec3_t  r_origin;
  50
  51 float   r_world_matrix[16];
  52 float   r_base_world_matrix[16];
  53
  54 //
  55 // screen size info
  56 //
  57 refdef_t        r_refdef;
  58
  59 mleaf_t         *r_viewleaf, *r_oldviewleaf;
  60
  61 unsigned short  d_lightstylevalue[256]; // 8.8 fraction of base light value
  62
  63
  64 void R_MarkLeaves (void);
  65
  66 //cvar_t        r_norefresh = {"r_norefresh","0"};
  67 cvar_t  r_drawentities = {"r_drawentities","1"};
  68 cvar_t  r_drawviewmodel = {"r_drawviewmodel","1"};
  69 cvar_t  r_speeds = {"r_speeds","0"};
  70 cvar_t  r_speeds2 = {"r_speeds2","0"};
  71 cvar_t  r_fullbright = {"r_fullbright","0"};
  72 //cvar_t        r_lightmap = {"r_lightmap","0"};
  73 cvar_t  r_wateralpha = {"r_wateralpha","1"};
  74 cvar_t  r_dynamic = {"r_dynamic","1"};
  75 cvar_t  r_waterripple = {"r_waterripple","0"};
  76 cvar_t  r_fullbrights = {"r_fullbrights", "1"};
  77
  78 cvar_t  gl_lightmode = {"gl_lightmode", "1", true}; // LordHavoc: overbright lighting
  79 //cvar_t        r_dynamicbothsides = {"r_dynamicbothsides", "1"}; // LordHavoc: can disable dynamic lighting of backfaces, but quake maps are weird so it doesn't always work right...
  80 cvar_t  r_farclip = {"r_farclip", "6144"};
  81
  82 cvar_t  gl_fogenable = {"gl_fogenable", "0"};
  83 cvar_t  gl_fogdensity = {"gl_fogdensity", "0.25"};
  84 cvar_t  gl_fogred = {"gl_fogred","0.3"};
  85 cvar_t  gl_foggreen = {"gl_foggreen","0.3"};
  86 cvar_t  gl_fogblue = {"gl_fogblue","0.3"};
  87 cvar_t  gl_fogstart = {"gl_fogstart", "0"};
  88 cvar_t  gl_fogend = {"gl_fogend","0"};
  89 cvar_t  glfog = {"glfog", "0"};
  90
  91 int R_VisibleCullBox (vec3_t mins, vec3_t maxs)
  92 {
  93         int sides;
  94         mnode_t *nodestack[8192], *node;
  95         int stack = 0;
  96
  97         if (R_CullBox(mins, maxs))
  98                 return true;
  99
 100         node = cl.worldmodel->nodes;
 101 loc0:
 102         if (node->contents < 0)
 103         {
 104                 if (((mleaf_t *)node)->visframe == r_framecount)
 105                         return false;
 106                 if (!stack)
 107                         return true;
 108                 node = nodestack[--stack];
 109                 goto loc0;
 110         }
 111
 112         sides = BOX_ON_PLANE_SIDE(mins, maxs, node->plane);
 113
 114 // recurse down the contacted sides
 115         if (sides & 1)
 116         {
 117                 if (sides & 2) // 3
 118                 {
 119                         // put second child on the stack for later examination
 120                         nodestack[stack++] = node->children[1];
 121                         node = node->children[0];
 122                         goto loc0;
 123                 }
 124                 else // 1
 125                 {
 126                         node = node->children[0];
 127                         goto loc0;
 128                 }
 129         }
 130         // 2
 131         node = node->children[1];
 132         goto loc0;
 133 }
 134
 135 qboolean lighthalf;
 136
 137 vec3_t fogcolor;
 138 vec_t fogdensity;
 139 float fog_density, fog_red, fog_green, fog_blue;
 140 qboolean fogenabled;
 141 qboolean oldgl_fogenable;
 142 void FOG_framebegin(void)
 143 {
 144         if (nehahra)
 145         {
 146 //              if (!Nehahrademcompatibility)
 147 //                      gl_fogenable.value = 0;
 148                 if (gl_fogenable.value)
 149                 {
 150                         oldgl_fogenable = true;
 151                         fog_density = gl_fogdensity.value;
 152                         fog_red = gl_fogred.value;
 153                         fog_green = gl_foggreen.value;
 154                         fog_blue = gl_fogblue.value;
 155                 }
 156                 else if (oldgl_fogenable)
 157                 {
 158                         oldgl_fogenable = false;
 159                         fog_density = 0;
 160                         fog_red = 0;
 161                         fog_green = 0;
 162                         fog_blue = 0;
 163                 }
 164         }
 165         if (fog_density)
 166         {
 167                         fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 168                         fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 169                         fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 170                         if (lighthalf)
 171                         {
 172                                 fogcolor[0] *= 0.5f;
 173                                 fogcolor[1] *= 0.5f;
 174                                 fogcolor[2] *= 0.5f;
 175                         }
 176         }
 177         if (glfog.value)
 178         {
 179                 if (!r_render.value)
 180                         return;
 181                 if(fog_density)
 182                 {
 183                         // LordHavoc: Borland C++ 5.0 was choking on this line, stupid compiler...
 184                         //GLfloat colors[4] = {(GLfloat) gl_fogred.value, (GLfloat) gl_foggreen.value, (GLfloat) gl_fogblue.value, (GLfloat) 1};
 185                         GLfloat colors[4];
 186                         colors[0] = fog_red;
 187                         colors[1] = fog_green;
 188                         colors[2] = fog_blue;
 189                         colors[3] = 1;
 190                         if (lighthalf)
 191                         {
 192                                 colors[0] *= 0.5f;
 193                                 colors[1] *= 0.5f;
 194                                 colors[2] *= 0.5f;
 195                         }
 196
 197                         glFogi (GL_FOG_MODE, GL_EXP2);
 198                         glFogf (GL_FOG_DENSITY, (GLfloat) fog_density / 100);
 199                         glFogfv (GL_FOG_COLOR, colors);
 200                         glEnable (GL_FOG);
 201                 }
 202                 else
 203                         glDisable(GL_FOG);
 204         }
 205         else
 206         {
 207                 if (fog_density)
 208                 {
 209                         fogenabled = true;
 210                         fogdensity = -4000.0f / (fog_density * fog_density);
 211                         // fog color was already set
 212                 }
 213                 else
 214                         fogenabled = false;
 215         }
 216 }
 217
 218 void FOG_frameend(void)
 219 {
 220         if (glfog.value)
 221                 glDisable(GL_FOG);
 222 }
 223
 224 void FOG_clear(void)
 225 {
 226         if (nehahra)
 227         {
 228                 Cvar_Set("gl_fogenable", "0");
 229                 Cvar_Set("gl_fogdensity", "0.2");
 230                 Cvar_Set("gl_fogred", "0.3");
 231                 Cvar_Set("gl_foggreen", "0.3");
 232                 Cvar_Set("gl_fogblue", "0.3");
 233         }
 234         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 235 }
 236
 237 void FOG_registercvars(void)
 238 {
 239         Cvar_RegisterVariable (&glfog);
 240         if (nehahra)
 241         {
 242                 Cvar_RegisterVariable (&gl_fogenable);
 243                 Cvar_RegisterVariable (&gl_fogdensity);
 244                 Cvar_RegisterVariable (&gl_fogred);
 245                 Cvar_RegisterVariable (&gl_foggreen);
 246                 Cvar_RegisterVariable (&gl_fogblue);
 247                 Cvar_RegisterVariable (&gl_fogstart);
 248                 Cvar_RegisterVariable (&gl_fogend);
 249         }
 250 }
 251
 252 void gl_main_start(void)
 253 {
 254 }
 255
 256 void gl_main_shutdown(void)
 257 {
 258 }
 259
 260 void gl_main_newmap(void)
 261 {
 262 }
 263
 264 void GL_Main_Init(void)
 265 {
 266         FOG_registercvars();
 267         Cvar_RegisterVariable (&r_drawentities);
 268         Cvar_RegisterVariable (&r_drawviewmodel);
 269         Cvar_RegisterVariable (&r_speeds);
 270         Cvar_RegisterVariable (&r_speeds2);
 271         Cvar_RegisterVariable (&gl_lightmode);
 272 //      Cvar_RegisterVariable (&r_dynamicwater);
 273 //      Cvar_RegisterVariable (&r_dynamicbothsides);
 274         Cvar_RegisterVariable (&r_fullbrights);
 275         Cvar_RegisterVariable (&r_wateralpha);
 276         Cvar_RegisterVariable (&r_dynamic);
 277         Cvar_RegisterVariable (&r_waterripple); // LordHavoc: added waterripple
 278         if (nehahra)
 279                 Cvar_SetValue("r_fullbrights", 0);
 280 //      if (gl_vendor && strstr(gl_vendor, "3Dfx"))
 281 //              gl_lightmode.value = 0;
 282         Cvar_RegisterVariable (&r_fullbright);
 283         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 284 }
 285
 286 extern void GL_Draw_Init(void);
 287 extern void GL_Main_Init(void);
 288 extern void GL_Models_Init(void);
 289 extern void GL_Poly_Init(void);
 290 extern void GL_Surf_Init(void);
 291 extern void GL_Screen_Init(void);
 292 extern void GL_Misc_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 CL_Effects_Init(void);
 298
 299 void Render_Init(void)
 300 {
 301         R_Modules_Shutdown();
 302         GL_Draw_Init();
 303         GL_Main_Init();
 304         GL_Models_Init();
 305         GL_Poly_Init();
 306         GL_Surf_Init();
 307         GL_Screen_Init();
 308         GL_Misc_Init();
 309         R_Crosshairs_Init();
 310         R_Light_Init();
 311         R_Particles_Init();
 312         R_Explosion_Init();
 313         CL_Effects_Init();
 314         R_Decals_Init();
 315         R_Modules_Start();
 316 }
 317
 318 /*
 319 ===============
 320 GL_Init
 321 ===============
 322 */
 323 extern char *ENGINE_EXTENSIONS;
 324 void GL_Init (void)
 325 {
 326         gl_vendor = glGetString (GL_VENDOR);
 327         Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
 328         gl_renderer = glGetString (GL_RENDERER);
 329         Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
 330
 331         gl_version = glGetString (GL_VERSION);
 332         Con_Printf ("GL_VERSION: %s\n", gl_version);
 333         gl_extensions = glGetString (GL_EXTENSIONS);
 334         Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
 335
 336 //      Con_Printf ("%s %s\n", gl_renderer, gl_version);
 337
 338         VID_CheckMultitexture();
 339         VID_CheckCVA();
 340
 341         // LordHavoc: report supported extensions
 342         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 343
 344         glCullFace(GL_FRONT);
 345         glEnable(GL_TEXTURE_2D);
 346 //      glDisable(GL_ALPHA_TEST);
 347         glAlphaFunc(GL_GREATER, 0.5);
 348
 349 //      glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
 350 }
 351
 352
 353 /*
 354 void R_RotateForEntity (entity_t *e)
 355 {
 356         glTranslatef (e->origin[0],  e->origin[1],  e->origin[2]);
 357
 358         glRotatef (e->angles[1],  0, 0, 1);
 359         glRotatef (-e->angles[0],  0, 1, 0);
 360         glRotatef (e->angles[2],  1, 0, 0);
 361
 362         glScalef (e->scale, e->scale, e->scale); // LordHavoc: model scale
 363 }
 364 */
 365
 366 // LordHavoc: shading stuff
 367 vec3_t  shadevector;
 368 vec3_t  shadecolor;
 369
 370 float   modelalpha;
 371
 372 //==================================================================================
 373
 374 void R_DrawBrushModel (entity_t *e);
 375 void R_DrawSpriteModel (entity_t *e, frameblend_t *blend);
 376
 377 void R_LerpUpdate(entity_t *ent)
 378 {
 379         int frame;
 380         frame = ent->render.frame;
 381         if (ent->render.model && ent->render.frame >= ent->render.model->numframes)
 382         {
 383                 Con_Printf("R_LerpUpdate: no such frame%6i in \"%s\"\n", ent->render.frame, ent->render.model->name);
 384                 frame = 0;
 385         }
 386
 387         if (ent->render.lerp_model != ent->render.model)
 388         {
 389                 // reset all interpolation information
 390                 ent->render.lerp_model = ent->render.model;
 391                 ent->render.frame1 = ent->render.frame2 = frame;
 392                 ent->render.frame1start = ent->render.frame2start = cl.time;
 393                 ent->render.framelerp = 1;
 394                 ent->render.lerp_starttime = 0;
 395         }
 396         else if (ent->render.frame2 != frame)
 397         {
 398                 // transition to new frame
 399                 ent->render.frame1 = ent->render.frame2;
 400                 ent->render.frame1start = ent->render.frame2start;
 401                 ent->render.frame2 = frame;
 402                 ent->render.frame2start = cl.time;
 403                 ent->render.framelerp = 0;
 404                 ent->render.lerp_starttime = cl.time;
 405         }
 406         else
 407         {
 408                 // lerp_starttime < 0 is used to prevent changing of framelerp
 409                 if (ent->render.lerp_starttime >= 0)
 410                 {
 411                         // update transition
 412                         ent->render.framelerp = (cl.time - ent->render.lerp_starttime) * 10;
 413                         ent->render.framelerp = bound(0, ent->render.framelerp, 1);
 414                 }
 415         }
 416 }
 417
 418
 419 void R_PrepareEntities (void)
 420 {
 421         int i;
 422         entity_t *ent;
 423         vec3_t v;
 424         // this updates entities that are supposed to be view relative
 425         for (i = 0;i < cl_numvisedicts;i++)
 426         {
 427                 ent = cl_visedicts[i];
 428
 429                 if (ent->render.flags & RENDER_VIEWMODEL)
 430                 {
 431                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 432                         ent->render.flags -= RENDER_VIEWMODEL;
 433                         // transform origin
 434                         VectorCopy(ent->render.origin, v);
 435                         ent->render.origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 436                         ent->render.origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 437                         ent->render.origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 438                         // adjust angles
 439                         VectorAdd(ent->render.angles, r_refdef.viewangles, ent->render.angles);
 440                 }
 441         }
 442 }
 443
 444 /*
 445 =============
 446 R_DrawEntitiesOnList
 447 =============
 448 */
 449 // LordHavoc: split so bmodels are rendered before any other objects
 450 void R_DrawEntitiesOnList1 (void)
 451 {
 452         int             i;
 453
 454         if (!r_drawentities.value)
 455                 return;
 456
 457         for (i = 0;i < cl_numvisedicts;i++)
 458         {
 459                 if (cl_visedicts[i]->render.model->type != mod_brush)
 460                         continue;
 461                 currententity = cl_visedicts[i];
 462                 modelalpha = currententity->render.alpha;
 463
 464                 R_DrawBrushModel (currententity);
 465         }
 466 }
 467
 468 void R_DrawEntitiesOnList2 (void)
 469 {
 470         int             i;
 471         frameblend_t blend[4];
 472
 473         if (!r_drawentities.value)
 474                 return;
 475
 476         for (i = 0;i < cl_numvisedicts;i++)
 477         {
 478                 currententity = cl_visedicts[i];
 479                 modelalpha = currententity->render.alpha;
 480
 481                 switch (currententity->render.model->type)
 482                 {
 483                 case mod_alias:
 484                         R_LerpUpdate(currententity);
 485                         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 486                         R_DrawAliasModel (currententity, true, modelalpha, currententity->render.model, blend, currententity->render.skinnum, currententity->render.origin, currententity->render.angles, currententity->render.scale, currententity->render.effects, currententity->render.model->flags, currententity->render.colormap);
 487                         break;
 488
 489                 case mod_sprite:
 490                         R_LerpUpdate(currententity);
 491                         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 492                         R_DrawSpriteModel (currententity, blend);
 493                         break;
 494
 495                 default:
 496                         break;
 497                 }
 498         }
 499 }
 500
 501 /*
 502 =============
 503 R_DrawViewModel
 504 =============
 505 */
 506 void R_DrawViewModel (void)
 507 {
 508         frameblend_t blend[4];
 509
 510         if (!r_drawviewmodel.value || chase_active.value || envmap || !r_drawentities.value || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 511                 return;
 512
 513         currententity = &cl.viewent;
 514         currententity->render.alpha = modelalpha = cl_entities[cl.viewentity].render.alpha; // LordHavoc: if the player is transparent, so is the gun
 515         currententity->render.effects = cl_entities[cl.viewentity].render.effects;
 516         currententity->render.scale = 1;
 517         VectorCopy(cl_entities[cl.viewentity].render.colormod, currententity->render.colormod);
 518
 519         R_LerpUpdate(currententity);
 520         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 521
 522         // hack the depth range to prevent view model from poking into walls
 523         glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
 524         R_DrawAliasModel (currententity, false, modelalpha, currententity->render.model, blend, currententity->render.skinnum, currententity->render.origin, currententity->render.angles, currententity->render.scale, currententity->render.effects, currententity->render.model->flags, currententity->render.colormap);
 525         glDepthRange (gldepthmin, gldepthmax);
 526 }
 527
 528 void R_DrawBrushModel (entity_t *e);
 529
 530 void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
 531
 532 void R_SetFrustum (void)
 533 {
 534         int             i;
 535
 536         if (r_refdef.fov_x == 90)
 537         {
 538                 // front side is visible
 539
 540                 VectorAdd (vpn, vright, frustum[0].normal);
 541                 VectorSubtract (vpn, vright, frustum[1].normal);
 542
 543                 VectorAdd (vpn, vup, frustum[2].normal);
 544                 VectorSubtract (vpn, vup, frustum[3].normal);
 545         }
 546         else
 547         {
 548                 // rotate VPN right by FOV_X/2 degrees
 549                 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 550                 // rotate VPN left by FOV_X/2 degrees
 551                 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 552                 // rotate VPN up by FOV_X/2 degrees
 553                 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 554                 // rotate VPN down by FOV_X/2 degrees
 555                 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 556         }
 557
 558         for (i=0 ; i<4 ; i++)
 559         {
 560                 frustum[i].type = PLANE_ANYZ;
 561                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 562 //              frustum[i].signbits = SignbitsForPlane (&frustum[i]);
 563                 BoxOnPlaneSideClassify(&frustum[i]);
 564         }
 565 }
 566
 567 void R_AnimateLight (void);
 568 void V_CalcBlend (void);
 569
 570 /*
 571 ===============
 572 R_SetupFrame
 573 ===============
 574 */
 575 void R_SetupFrame (void)
 576 {
 577 // don't allow cheats in multiplayer
 578         if (cl.maxclients > 1)
 579         {
 580                 Cvar_Set ("r_fullbright", "0");
 581                 Cvar_Set ("r_ambient", "0");
 582         }
 583
 584         r_framecount++;
 585
 586 // build the transformation matrix for the given view angles
 587         VectorCopy (r_refdef.vieworg, r_origin);
 588
 589         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 590
 591 // current viewleaf
 592         r_oldviewleaf = r_viewleaf;
 593         r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
 594
 595         V_SetContentsColor (r_viewleaf->contents);
 596         V_CalcBlend ();
 597
 598         r_cache_thrash = false;
 599
 600         c_brush_polys = 0;
 601         c_alias_polys = 0;
 602         c_light_polys = 0;
 603         c_faces = 0;
 604         c_nodes = 0;
 605         c_leafs = 0;
 606         c_models = 0;
 607         c_bmodels = 0;
 608         c_sprites = 0;
 609         c_particles = 0;
 610 //      c_dlights = 0;
 611
 612         R_AnimateLight ();
 613 }
 614
 615
 616 void MYgluPerspective( GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar )
 617 {
 618    GLdouble xmin, xmax, ymin, ymax;
 619
 620    ymax = zNear * tan( fovy * M_PI / 360.0 );
 621    ymin = -ymax;
 622
 623    xmin = ymin * aspect;
 624    xmax = ymax * aspect;
 625
 626    glFrustum( xmin, xmax, ymin, ymax, zNear, zFar );
 627 }
 628
 629
 630 /*
 631 =============
 632 R_SetupGL
 633 =============
 634 */
 635 void R_SetupGL (void)
 636 {
 637         float   screenaspect;
 638         int             x, x2, y2, y, w, h;
 639
 640         if (!r_render.value)
 641                 return;
 642         //
 643         // set up viewpoint
 644         //
 645         glMatrixMode(GL_PROJECTION);
 646     glLoadIdentity ();
 647         x = r_refdef.vrect.x * glwidth/vid.width;
 648         x2 = (r_refdef.vrect.x + r_refdef.vrect.width) * glwidth/vid.width;
 649         y = (vid.height-r_refdef.vrect.y) * glheight/vid.height;
 650         y2 = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height)) * glheight/vid.height;
 651
 652         // fudge around because of frac screen scale
 653         if (x > 0)
 654                 x--;
 655         if (x2 < glwidth)
 656                 x2++;
 657         if (y2 < 0)
 658                 y2--;
 659         if (y < glheight)
 660                 y++;
 661
 662         w = x2 - x;
 663         h = y - y2;
 664
 665         if (envmap)
 666         {
 667                 x = y2 = 0;
 668                 w = h = 256;
 669         }
 670
 671         glViewport (glx + x, gly + y2, w, h);
 672     screenaspect = (float)r_refdef.vrect.width/r_refdef.vrect.height;
 673 //      yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*180/M_PI;
 674         MYgluPerspective (r_refdef.fov_y,  screenaspect,  4,  r_farclip.value);
 675
 676         glCullFace(GL_FRONT);
 677
 678         glMatrixMode(GL_MODELVIEW);
 679     glLoadIdentity ();
 680
 681     glRotatef (-90,  1, 0, 0);      // put Z going up
 682     glRotatef (90,  0, 0, 1);       // put Z going up
 683     glRotatef (-r_refdef.viewangles[2],  1, 0, 0);
 684     glRotatef (-r_refdef.viewangles[0],  0, 1, 0);
 685     glRotatef (-r_refdef.viewangles[1],  0, 0, 1);
 686     glTranslatef (-r_refdef.vieworg[0],  -r_refdef.vieworg[1],  -r_refdef.vieworg[2]);
 687
 688         glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix);
 689
 690         //
 691         // set drawing parms
 692         //
 693 //      if (gl_cull.value)
 694                 glEnable(GL_CULL_FACE);
 695 //      else
 696 //              glDisable(GL_CULL_FACE);
 697
 698         glEnable(GL_BLEND); // was Disable
 699         glDisable(GL_ALPHA_TEST);
 700         glAlphaFunc(GL_GREATER, 0.5);
 701         glEnable(GL_DEPTH_TEST);
 702         glDepthMask(1);
 703         glShadeModel(GL_SMOOTH);
 704 }
 705
 706 /*
 707 =============
 708 R_Clear
 709 =============
 710 */
 711 void R_Clear (void)
 712 {
 713         if (!r_render.value)
 714                 return;
 715 //      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // LordHavoc: moved to SCR_UpdateScreen
 716         gldepthmin = 0;
 717         gldepthmax = 1;
 718         glDepthFunc (GL_LEQUAL);
 719
 720         glDepthRange (gldepthmin, gldepthmax);
 721 }
 722
 723 // LordHavoc: my trick to *FIX* GLQuake lighting once and for all :)
 724 void GL_Brighten(void)
 725 {
 726         if (!r_render.value)
 727                 return;
 728         glMatrixMode(GL_PROJECTION);
 729     glLoadIdentity ();
 730         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
 731         glMatrixMode(GL_MODELVIEW);
 732     glLoadIdentity ();
 733         glDisable (GL_DEPTH_TEST);
 734         glDisable (GL_CULL_FACE);
 735         glDisable(GL_TEXTURE_2D);
 736         glEnable(GL_BLEND);
 737         glBlendFunc (GL_DST_COLOR, GL_ONE);
 738         glBegin (GL_TRIANGLES);
 739         glColor3f (1, 1, 1);
 740         glVertex2f (-5000, -5000);
 741         glVertex2f (10000, -5000);
 742         glVertex2f (-5000, 10000);
 743         glEnd ();
 744         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 745         glDisable(GL_BLEND);
 746         glEnable(GL_TEXTURE_2D);
 747         glEnable (GL_DEPTH_TEST);
 748         glEnable (GL_CULL_FACE);
 749 }
 750
 751 void GL_BlendView(void)
 752 {
 753         if (!r_render.value)
 754                 return;
 755
 756         if (v_blend[3] < 0.01f)
 757                 return;
 758
 759         glMatrixMode(GL_PROJECTION);
 760     glLoadIdentity ();
 761         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
 762         glMatrixMode(GL_MODELVIEW);
 763     glLoadIdentity ();
 764         glDisable (GL_DEPTH_TEST);
 765         glDisable (GL_CULL_FACE);
 766         glDisable(GL_TEXTURE_2D);
 767         glEnable(GL_BLEND);
 768         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 769         glBegin (GL_TRIANGLES);
 770         if (lighthalf)
 771                 glColor4f (v_blend[0] * 0.5f, v_blend[1] * 0.5f, v_blend[2] * 0.5f, v_blend[3]);
 772         else
 773                 glColor4fv (v_blend);
 774         glVertex2f (-5000, -5000);
 775         glVertex2f (10000, -5000);
 776         glVertex2f (-5000, 10000);
 777         glEnd ();
 778
 779         glEnable (GL_CULL_FACE);
 780         glEnable (GL_DEPTH_TEST);
 781         glDisable(GL_BLEND);
 782         glEnable(GL_TEXTURE_2D);
 783 }
 784
 785 #define TIMEREPORT(VAR) \
 786         if (r_speeds2.value)\
 787         {\
 788                 temptime = currtime;\
 789                 currtime = Sys_DoubleTime();\
 790                 VAR = (int) ((currtime - temptime) * 1000000.0);\
 791         }\
 792         else\
 793                 VAR = 0;
 794
 795 /*
 796 ================
 797 R_RenderView
 798
 799 r_refdef must be set before the first call
 800 ================
 801 */
 802 extern void R_Sky(void);
 803 extern void UploadLightmaps(void);
 804 char r_speeds2_string1[81], r_speeds2_string2[81], r_speeds2_string3[81], r_speeds2_string4[81], r_speeds2_string5[81], r_speeds2_string6[81], r_speeds2_string7[81];
 805 void R_RenderView (void)
 806 {
 807         double starttime, currtime, temptime;
 808         int time_clear, time_setup, time_world, time_bmodels, time_upload, time_sky, time_wall, time_models, time_moveparticles, time_drawparticles, time_moveexplosions, time_drawexplosions, time_drawdecals, time_transpoly, time_blend, time_total;
 809 //      if (r_norefresh.value)
 810 //              return;
 811
 812         if (!r_worldentity.render.model || !cl.worldmodel)
 813                 Host_Error ("R_RenderView: NULL worldmodel");
 814
 815         lighthalf = gl_lightmode.value;
 816
 817         FOG_framebegin();
 818
 819         if (r_speeds2.value)
 820                 starttime = currtime = Sys_DoubleTime();
 821         else
 822                 starttime = currtime = 0;
 823         R_Clear();
 824         TIMEREPORT(time_clear)
 825
 826         // render normal view
 827
 828         R_SetupFrame ();
 829         R_SetFrustum ();
 830         R_SetupGL ();
 831
 832         R_PrepareEntities();
 833
 834         skypolyclear();
 835         wallpolyclear();
 836         transpolyclear();
 837
 838         TIMEREPORT(time_setup)
 839
 840         R_DrawWorld ();
 841         TIMEREPORT(time_world)
 842         R_DrawEntitiesOnList1 (); // BSP models
 843         TIMEREPORT(time_bmodels)
 844
 845         UploadLightmaps();
 846         TIMEREPORT(time_upload)
 847
 848         skypolyrender(); // fogged sky polys, affects depth
 849
 850         if (currentskypoly)
 851                 R_Sky(); // does not affect depth, draws over the sky polys
 852         TIMEREPORT(time_sky)
 853
 854         wallpolyrender();
 855         TIMEREPORT(time_wall)
 856
 857         GL_DrawDecals();
 858         TIMEREPORT(time_drawdecals)
 859
 860         if (!intimerefresh && !r_speeds2.value)
 861                 S_ExtraUpdate ();       // don't let sound get messed up if going slow
 862
 863         R_DrawEntitiesOnList2 (); // other models
 864 //      R_RenderDlights ();
 865         R_DrawViewModel ();
 866         TIMEREPORT(time_models)
 867         R_MoveParticles ();
 868         TIMEREPORT(time_moveparticles)
 869         R_DrawParticles ();
 870         TIMEREPORT(time_drawparticles)
 871         R_MoveExplosions();
 872         TIMEREPORT(time_moveexplosions)
 873         R_DrawExplosions();
 874         TIMEREPORT(time_drawexplosions)
 875
 876         transpolyrender();
 877         TIMEREPORT(time_transpoly)
 878
 879         FOG_frameend();
 880
 881         GL_BlendView();
 882         TIMEREPORT(time_blend)
 883         if (r_speeds2.value)
 884         {
 885                 time_total = (int) ((Sys_DoubleTime() - starttime) * 1000000.0);
 886                 sprintf(r_speeds2_string1, "%6i walls %6i dlitwalls %7i modeltris %7i transpoly\n", c_brush_polys, c_light_polys, c_alias_polys, currenttranspoly);
 887                 sprintf(r_speeds2_string2, "BSP: %6i faces %6i nodes %6i leafs\n", c_faces, c_nodes, c_leafs);
 888                 sprintf(r_speeds2_string3, "%4i models %4i bmodels %4i sprites %5i particles %3i dlights\n", c_models, c_bmodels, c_sprites, c_particles, c_dlights);
 889                 sprintf(r_speeds2_string4, "%6ius clear  %6ius setup  %6ius world  %6ius bmodel %6ius upload", time_clear, time_setup, time_world, time_bmodels, time_upload);
 890                 sprintf(r_speeds2_string5, "%6ius sky    %6ius wall   %6ius models %6ius mpart  %6ius dpart ", time_sky, time_wall, time_models, time_moveparticles, time_drawparticles);
 891                 sprintf(r_speeds2_string6, "%6ius mexplo %6ius dexplo %6ius decals %6ius trans  %6ius blend ", time_moveexplosions, time_drawexplosions, time_drawdecals, time_transpoly, time_blend);
 892                 sprintf(r_speeds2_string7, "%6ius permdl %6ius total ", time_models / max(c_models, 1), time_total);
 893         }
 894 }