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  contrast = {"contrast", "1.0", true}; // LordHavoc: a method of operating system independent color correction
  79 cvar_t  brightness = {"brightness", "1.0", true}; // LordHavoc: a method of operating system independent color correction
  80 cvar_t  gl_lightmode = {"gl_lightmode", "1", true}; // LordHavoc: overbright lighting
  81 //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...
  82 cvar_t  r_farclip = {"r_farclip", "6144"};
  83
  84 cvar_t  gl_fogenable = {"gl_fogenable", "0"};
  85 cvar_t  gl_fogdensity = {"gl_fogdensity", "0.25"};
  86 cvar_t  gl_fogred = {"gl_fogred","0.3"};
  87 cvar_t  gl_foggreen = {"gl_foggreen","0.3"};
  88 cvar_t  gl_fogblue = {"gl_fogblue","0.3"};
  89 cvar_t  gl_fogstart = {"gl_fogstart", "0"};
  90 cvar_t  gl_fogend = {"gl_fogend","0"};
  91 cvar_t  glfog = {"glfog", "0"};
  92
  93 int R_VisibleCullBox (vec3_t mins, vec3_t maxs)
  94 {
  95         int sides;
  96         mnode_t *nodestack[8192], *node;
  97         int stack = 0;
  98
  99         if (R_CullBox(mins, maxs))
 100                 return true;
 101
 102         node = cl.worldmodel->nodes;
 103 loc0:
 104         if (node->contents < 0)
 105         {
 106                 if (((mleaf_t *)node)->visframe == r_framecount)
 107                         return false;
 108                 if (!stack)
 109                         return true;
 110                 node = nodestack[--stack];
 111                 goto loc0;
 112         }
 113
 114         sides = BOX_ON_PLANE_SIDE(mins, maxs, node->plane);
 115
 116 // recurse down the contacted sides
 117         if (sides & 1)
 118         {
 119                 if (sides & 2) // 3
 120                 {
 121                         // put second child on the stack for later examination
 122                         nodestack[stack++] = node->children[1];
 123                         node = node->children[0];
 124                         goto loc0;
 125                 }
 126                 else // 1
 127                 {
 128                         node = node->children[0];
 129                         goto loc0;
 130                 }
 131         }
 132         // 2
 133         node = node->children[1];
 134         goto loc0;
 135 }
 136
 137 qboolean lighthalf;
 138
 139 vec3_t fogcolor;
 140 vec_t fogdensity;
 141 float fog_density, fog_red, fog_green, fog_blue;
 142 qboolean fogenabled;
 143 qboolean oldgl_fogenable;
 144 void FOG_framebegin()
 145 {
 146         if (nehahra)
 147         {
 148 //              if (!Nehahrademcompatibility)
 149 //                      gl_fogenable.value = 0;
 150                 if (gl_fogenable.value)
 151                 {
 152                         oldgl_fogenable = true;
 153                         fog_density = gl_fogdensity.value;
 154                         fog_red = gl_fogred.value;
 155                         fog_green = gl_foggreen.value;
 156                         fog_blue = gl_fogblue.value;
 157                 }
 158                 else if (oldgl_fogenable)
 159                 {
 160                         oldgl_fogenable = false;
 161                         fog_density = 0;
 162                         fog_red = 0;
 163                         fog_green = 0;
 164                         fog_blue = 0;
 165                 }
 166         }
 167         if (fog_density)
 168         {
 169                         fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 170                         fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 171                         fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 172                         if (lighthalf)
 173                         {
 174                                 fogcolor[0] *= 0.5f;
 175                                 fogcolor[1] *= 0.5f;
 176                                 fogcolor[2] *= 0.5f;
 177                         }
 178         }
 179         if (glfog.value)
 180         {
 181                 if (!r_render.value)
 182                         return;
 183                 if(fog_density)
 184                 {
 185                         // LordHavoc: Borland C++ 5.0 was choking on this line, stupid compiler...
 186                         //GLfloat colors[4] = {(GLfloat) gl_fogred.value, (GLfloat) gl_foggreen.value, (GLfloat) gl_fogblue.value, (GLfloat) 1};
 187                         GLfloat colors[4];
 188                         colors[0] = fog_red;
 189                         colors[1] = fog_green;
 190                         colors[2] = fog_blue;
 191                         colors[3] = 1;
 192                         if (lighthalf)
 193                         {
 194                                 colors[0] *= 0.5f;
 195                                 colors[1] *= 0.5f;
 196                                 colors[2] *= 0.5f;
 197                         }
 198
 199                         glFogi (GL_FOG_MODE, GL_EXP2);
 200                         glFogf (GL_FOG_DENSITY, (GLfloat) fog_density / 100);
 201                         glFogfv (GL_FOG_COLOR, colors);
 202                         glEnable (GL_FOG);
 203                 }
 204                 else
 205                         glDisable(GL_FOG);
 206         }
 207         else
 208         {
 209                 if (fog_density)
 210                 {
 211                         fogenabled = true;
 212                         fogdensity = -4000.0f / (fog_density * fog_density);
 213                         // fog color was already set
 214                 }
 215                 else
 216                         fogenabled = false;
 217         }
 218 }
 219
 220 void FOG_frameend()
 221 {
 222         if (glfog.value)
 223                 glDisable(GL_FOG);
 224 }
 225
 226 void FOG_clear()
 227 {
 228         if (nehahra)
 229         {
 230                 Cvar_Set("gl_fogenable", "0");
 231                 Cvar_Set("gl_fogdensity", "0.2");
 232                 Cvar_Set("gl_fogred", "0.3");
 233                 Cvar_Set("gl_foggreen", "0.3");
 234                 Cvar_Set("gl_fogblue", "0.3");
 235         }
 236         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 237 }
 238
 239 void FOG_registercvars()
 240 {
 241         Cvar_RegisterVariable (&glfog);
 242         if (nehahra)
 243         {
 244                 Cvar_RegisterVariable (&gl_fogenable);
 245                 Cvar_RegisterVariable (&gl_fogdensity);
 246                 Cvar_RegisterVariable (&gl_fogred);
 247                 Cvar_RegisterVariable (&gl_foggreen);
 248                 Cvar_RegisterVariable (&gl_fogblue);
 249                 Cvar_RegisterVariable (&gl_fogstart);
 250                 Cvar_RegisterVariable (&gl_fogend);
 251         }
 252 }
 253
 254 void gl_main_start()
 255 {
 256 }
 257
 258 void gl_main_shutdown()
 259 {
 260 }
 261
 262 void gl_main_newmap()
 263 {
 264 }
 265
 266 void GL_Main_Init()
 267 {
 268         FOG_registercvars();
 269         Cvar_RegisterVariable (&r_drawentities);
 270         Cvar_RegisterVariable (&r_drawviewmodel);
 271         Cvar_RegisterVariable (&r_speeds);
 272         Cvar_RegisterVariable (&r_speeds2);
 273         Cvar_RegisterVariable (&contrast);
 274         Cvar_RegisterVariable (&brightness);
 275         Cvar_RegisterVariable (&gl_lightmode);
 276 //      Cvar_RegisterVariable (&r_dynamicwater);
 277 //      Cvar_RegisterVariable (&r_dynamicbothsides);
 278         Cvar_RegisterVariable (&r_fullbrights);
 279         Cvar_RegisterVariable (&r_wateralpha);
 280         Cvar_RegisterVariable (&r_dynamic);
 281         Cvar_RegisterVariable (&r_waterripple); // LordHavoc: added waterripple
 282         if (nehahra)
 283                 Cvar_SetValue("r_fullbrights", 0);
 284 //      if (gl_vendor && strstr(gl_vendor, "3Dfx"))
 285 //              gl_lightmode.value = 0;
 286         Cvar_RegisterVariable (&r_fullbright);
 287         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 288 }
 289
 290 extern void GL_Draw_Init();
 291 extern void GL_Main_Init();
 292 extern void GL_Models_Init();
 293 extern void GL_Poly_Init();
 294 extern void GL_Surf_Init();
 295 extern void GL_Screen_Init();
 296 extern void GL_Misc_Init();
 297 extern void R_Crosshairs_Init();
 298 extern void R_Light_Init();
 299 extern void R_Particles_Init();
 300 extern void R_Explosion_Init();
 301 extern void CL_Effects_Init();
 302
 303 void Render_Init()
 304 {
 305         R_Modules_Shutdown();
 306         GL_Draw_Init();
 307         GL_Main_Init();
 308         GL_Models_Init();
 309         GL_Poly_Init();
 310         GL_Surf_Init();
 311         GL_Screen_Init();
 312         GL_Misc_Init();
 313         R_Crosshairs_Init();
 314         R_Light_Init();
 315         R_Particles_Init();
 316         R_Explosion_Init();
 317         CL_Effects_Init();
 318         R_Decals_Init();
 319         R_Modules_Start();
 320 }
 321
 322 /*
 323 ===============
 324 GL_Init
 325 ===============
 326 */
 327 extern char *ENGINE_EXTENSIONS;
 328 void GL_Init (void)
 329 {
 330         gl_vendor = glGetString (GL_VENDOR);
 331         Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
 332         gl_renderer = glGetString (GL_RENDERER);
 333         Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
 334
 335         gl_version = glGetString (GL_VERSION);
 336         Con_Printf ("GL_VERSION: %s\n", gl_version);
 337         gl_extensions = glGetString (GL_EXTENSIONS);
 338         Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
 339
 340 //      Con_Printf ("%s %s\n", gl_renderer, gl_version);
 341
 342         VID_CheckMultitexture();
 343         VID_CheckCVA();
 344
 345         // LordHavoc: report supported extensions
 346         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 347
 348         glCullFace(GL_FRONT);
 349         glEnable(GL_TEXTURE_2D);
 350 //      glDisable(GL_ALPHA_TEST);
 351         glAlphaFunc(GL_GREATER, 0.5);
 352
 353 //      glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
 354
 355         Palette_Init();
 356 }
 357
 358
 359 /*
 360 void R_RotateForEntity (entity_t *e)
 361 {
 362         glTranslatef (e->origin[0],  e->origin[1],  e->origin[2]);
 363
 364         glRotatef (e->angles[1],  0, 0, 1);
 365         glRotatef (-e->angles[0],  0, 1, 0);
 366         glRotatef (e->angles[2],  1, 0, 0);
 367
 368         glScalef (e->scale, e->scale, e->scale); // LordHavoc: model scale
 369 }
 370 */
 371
 372 // LordHavoc: shading stuff
 373 vec3_t  shadevector;
 374 vec3_t  shadecolor;
 375
 376 float   modelalpha;
 377
 378 //==================================================================================
 379
 380 void R_DrawBrushModel (entity_t *e);
 381 void R_DrawSpriteModel (entity_t *e, frameblend_t *blend);
 382
 383 void R_LerpUpdate(entity_t *ent)
 384 {
 385         int frame;
 386         frame = ent->render.frame;
 387         if (ent->render.model && ent->render.frame >= ent->render.model->numframes)
 388         {
 389                 Con_Printf("R_LerpUpdate: no such frame%6i in \"%s\"\n", ent->render.frame, ent->render.model->name);
 390                 frame = 0;
 391         }
 392
 393         if (ent->render.lerp_model != ent->render.model)
 394         {
 395                 // reset all interpolation information
 396                 ent->render.lerp_model = ent->render.model;
 397                 ent->render.frame1 = ent->render.frame2 = frame;
 398                 ent->render.frame1start = ent->render.frame2start = cl.time;
 399                 ent->render.framelerp = 1;
 400                 ent->render.lerp_starttime = 0;
 401         }
 402         else if (ent->render.frame2 != frame)
 403         {
 404                 // transition to new frame
 405                 ent->render.frame1 = ent->render.frame2;
 406                 ent->render.frame1start = ent->render.frame2start;
 407                 ent->render.frame2 = frame;
 408                 ent->render.frame2start = cl.time;
 409                 ent->render.framelerp = 0;
 410                 ent->render.lerp_starttime = cl.time;
 411         }
 412         else
 413         {
 414                 // lerp_starttime < 0 is used to prevent changing of framelerp
 415                 if (ent->render.lerp_starttime >= 0)
 416                 {
 417                         // update transition
 418                         ent->render.framelerp = (cl.time - ent->render.lerp_starttime) * 10;
 419                         ent->render.framelerp = bound(0, ent->render.framelerp, 1);
 420                 }
 421         }
 422 }
 423
 424
 425 void R_PrepareEntities (void)
 426 {
 427         int i;
 428         entity_t *ent;
 429         vec3_t v;
 430         // this updates entities that are supposed to be view relative
 431         for (i = 0;i < cl_numvisedicts;i++)
 432         {
 433                 ent = cl_visedicts[i];
 434
 435                 if (ent->render.flags & RENDER_VIEWMODEL)
 436                 {
 437                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 438                         ent->render.flags -= RENDER_VIEWMODEL;
 439                         // transform origin
 440                         VectorCopy(ent->render.origin, v);
 441                         ent->render.origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_refdef.vieworg[0];
 442                         ent->render.origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_refdef.vieworg[1];
 443                         ent->render.origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_refdef.vieworg[2];
 444                         // adjust angles
 445                         VectorAdd(ent->render.angles, r_refdef.viewangles, ent->render.angles);
 446                 }
 447         }
 448 }
 449
 450 /*
 451 =============
 452 R_DrawEntitiesOnList
 453 =============
 454 */
 455 // LordHavoc: split so bmodels are rendered before any other objects
 456 void R_DrawEntitiesOnList1 (void)
 457 {
 458         int             i;
 459
 460         if (!r_drawentities.value)
 461                 return;
 462
 463         for (i = 0;i < cl_numvisedicts;i++)
 464         {
 465                 if (cl_visedicts[i]->render.model->type != mod_brush)
 466                         continue;
 467                 currententity = cl_visedicts[i];
 468                 modelalpha = currententity->render.alpha;
 469
 470                 R_DrawBrushModel (currententity);
 471         }
 472 }
 473
 474 void R_DrawEntitiesOnList2 (void)
 475 {
 476         int             i;
 477         frameblend_t blend[4];
 478
 479         if (!r_drawentities.value)
 480                 return;
 481
 482         for (i = 0;i < cl_numvisedicts;i++)
 483         {
 484                 currententity = cl_visedicts[i];
 485                 modelalpha = currententity->render.alpha;
 486
 487                 switch (currententity->render.model->type)
 488                 {
 489                 case mod_alias:
 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_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);
 493                         break;
 494
 495                 case mod_sprite:
 496                         R_LerpUpdate(currententity);
 497                         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 498                         R_DrawSpriteModel (currententity, blend);
 499                         break;
 500
 501                 default:
 502                         break;
 503                 }
 504         }
 505 }
 506
 507 /*
 508 =============
 509 R_DrawViewModel
 510 =============
 511 */
 512 void R_DrawViewModel (void)
 513 {
 514         frameblend_t blend[4];
 515
 516         if (!r_drawviewmodel.value || chase_active.value || envmap || !r_drawentities.value || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 517                 return;
 518
 519         currententity = &cl.viewent;
 520         currententity->render.alpha = modelalpha = cl_entities[cl.viewentity].render.alpha; // LordHavoc: if the player is transparent, so is the gun
 521         currententity->render.effects = cl_entities[cl.viewentity].render.effects;
 522         currententity->render.scale = 1;
 523         VectorCopy(cl_entities[cl.viewentity].render.colormod, currententity->render.colormod);
 524
 525         R_LerpUpdate(currententity);
 526         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 527
 528         // hack the depth range to prevent view model from poking into walls
 529         glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
 530         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);
 531         glDepthRange (gldepthmin, gldepthmax);
 532 }
 533
 534 void R_DrawBrushModel (entity_t *e);
 535
 536 void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
 537
 538 void R_SetFrustum (void)
 539 {
 540         int             i;
 541
 542         if (r_refdef.fov_x == 90)
 543         {
 544                 // front side is visible
 545
 546                 VectorAdd (vpn, vright, frustum[0].normal);
 547                 VectorSubtract (vpn, vright, frustum[1].normal);
 548
 549                 VectorAdd (vpn, vup, frustum[2].normal);
 550                 VectorSubtract (vpn, vup, frustum[3].normal);
 551         }
 552         else
 553         {
 554                 // rotate VPN right by FOV_X/2 degrees
 555                 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 556                 // rotate VPN left by FOV_X/2 degrees
 557                 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 558                 // rotate VPN up by FOV_X/2 degrees
 559                 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 560                 // rotate VPN down by FOV_X/2 degrees
 561                 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 562         }
 563
 564         for (i=0 ; i<4 ; i++)
 565         {
 566                 frustum[i].type = PLANE_ANYZ;
 567                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 568 //              frustum[i].signbits = SignbitsForPlane (&frustum[i]);
 569                 BoxOnPlaneSideClassify(&frustum[i]);
 570         }
 571 }
 572
 573 void R_AnimateLight (void);
 574 void V_CalcBlend (void);
 575
 576 /*
 577 ===============
 578 R_SetupFrame
 579 ===============
 580 */
 581 void R_SetupFrame (void)
 582 {
 583 // don't allow cheats in multiplayer
 584         if (cl.maxclients > 1)
 585         {
 586                 Cvar_Set ("r_fullbright", "0");
 587                 Cvar_Set ("r_ambient", "0");
 588         }
 589
 590         R_AnimateLight ();
 591
 592         r_framecount++;
 593
 594 // build the transformation matrix for the given view angles
 595         VectorCopy (r_refdef.vieworg, r_origin);
 596
 597         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 598
 599 // current viewleaf
 600         r_oldviewleaf = r_viewleaf;
 601         r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
 602
 603         V_SetContentsColor (r_viewleaf->contents);
 604         V_CalcBlend ();
 605
 606         r_cache_thrash = false;
 607
 608         c_brush_polys = 0;
 609         c_alias_polys = 0;
 610         c_light_polys = 0;
 611         c_faces = 0;
 612         c_nodes = 0;
 613         c_leafs = 0;
 614         c_models = 0;
 615         c_bmodels = 0;
 616         c_sprites = 0;
 617         c_particles = 0;
 618 //      c_dlights = 0;
 619 }
 620
 621
 622 void MYgluPerspective( GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar )
 623 {
 624    GLdouble xmin, xmax, ymin, ymax;
 625
 626    ymax = zNear * tan( fovy * M_PI / 360.0 );
 627    ymin = -ymax;
 628
 629    xmin = ymin * aspect;
 630    xmax = ymax * aspect;
 631
 632    glFrustum( xmin, xmax, ymin, ymax, zNear, zFar );
 633 }
 634
 635
 636 extern char skyname[];
 637
 638 /*
 639 =============
 640 R_SetupGL
 641 =============
 642 */
 643 void R_SetupGL (void)
 644 {
 645         float   screenaspect;
 646         extern  int glwidth, glheight;
 647         int             x, x2, y2, y, w, h;
 648
 649         if (!r_render.value)
 650                 return;
 651         //
 652         // set up viewpoint
 653         //
 654         glMatrixMode(GL_PROJECTION);
 655     glLoadIdentity ();
 656         x = r_refdef.vrect.x * glwidth/vid.width;
 657         x2 = (r_refdef.vrect.x + r_refdef.vrect.width) * glwidth/vid.width;
 658         y = (vid.height-r_refdef.vrect.y) * glheight/vid.height;
 659         y2 = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height)) * glheight/vid.height;
 660
 661         // fudge around because of frac screen scale
 662         if (x > 0)
 663                 x--;
 664         if (x2 < glwidth)
 665                 x2++;
 666         if (y2 < 0)
 667                 y2--;
 668         if (y < glheight)
 669                 y++;
 670
 671         w = x2 - x;
 672         h = y - y2;
 673
 674         if (envmap)
 675         {
 676                 x = y2 = 0;
 677                 w = h = 256;
 678         }
 679
 680         glViewport (glx + x, gly + y2, w, h);
 681     screenaspect = (float)r_refdef.vrect.width/r_refdef.vrect.height;
 682 //      yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*180/M_PI;
 683 //      if (skyname[0]) // skybox enabled?
 684 //              MYgluPerspective (r_refdef.fov_y,  screenaspect,  4,  r_skyboxsize.value*1.732050807569 + 256); // this is size*sqrt(3) + 256
 685 //      else
 686                 MYgluPerspective (r_refdef.fov_y,  screenaspect,  4,  r_farclip.value);
 687
 688         glCullFace(GL_FRONT);
 689
 690         glMatrixMode(GL_MODELVIEW);
 691     glLoadIdentity ();
 692
 693     glRotatef (-90,  1, 0, 0);      // put Z going up
 694     glRotatef (90,  0, 0, 1);       // put Z going up
 695     glRotatef (-r_refdef.viewangles[2],  1, 0, 0);
 696     glRotatef (-r_refdef.viewangles[0],  0, 1, 0);
 697     glRotatef (-r_refdef.viewangles[1],  0, 0, 1);
 698     glTranslatef (-r_refdef.vieworg[0],  -r_refdef.vieworg[1],  -r_refdef.vieworg[2]);
 699
 700         glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix);
 701
 702         //
 703         // set drawing parms
 704         //
 705 //      if (gl_cull.value)
 706                 glEnable(GL_CULL_FACE);
 707 //      else
 708 //              glDisable(GL_CULL_FACE);
 709
 710         glEnable(GL_BLEND); // was Disable
 711         glDisable(GL_ALPHA_TEST);
 712         glAlphaFunc(GL_GREATER, 0.5);
 713         glEnable(GL_DEPTH_TEST);
 714         glDepthMask(1);
 715         glShadeModel(GL_SMOOTH);
 716 }
 717
 718 /*
 719 =============
 720 R_Clear
 721 =============
 722 */
 723 void R_Clear (void)
 724 {
 725         if (!r_render.value)
 726                 return;
 727 //      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // LordHavoc: moved to SCR_UpdateScreen
 728         gldepthmin = 0;
 729         gldepthmax = 1;
 730         glDepthFunc (GL_LEQUAL);
 731
 732         glDepthRange (gldepthmin, gldepthmax);
 733 }
 734
 735 // LordHavoc: my trick to *FIX* GLQuake lighting once and for all :)
 736 void GL_Brighten()
 737 {
 738         if (!r_render.value)
 739                 return;
 740         glMatrixMode(GL_PROJECTION);
 741     glLoadIdentity ();
 742         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
 743         glMatrixMode(GL_MODELVIEW);
 744     glLoadIdentity ();
 745         glDisable (GL_DEPTH_TEST);
 746         glDisable (GL_CULL_FACE);
 747         glDisable(GL_TEXTURE_2D);
 748         glEnable(GL_BLEND);
 749         glBlendFunc (GL_DST_COLOR, GL_ONE);
 750         glBegin (GL_TRIANGLES);
 751         glColor3f (1, 1, 1);
 752         glVertex2f (-5000, -5000);
 753         glVertex2f (10000, -5000);
 754         glVertex2f (-5000, 10000);
 755         glEnd ();
 756         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 757         glDisable(GL_BLEND);
 758         glEnable(GL_TEXTURE_2D);
 759         glEnable (GL_DEPTH_TEST);
 760         glEnable (GL_CULL_FACE);
 761 }
 762
 763 extern cvar_t contrast;
 764 extern cvar_t brightness;
 765 extern cvar_t gl_lightmode;
 766
 767 void GL_BlendView()
 768 {
 769         if (!r_render.value)
 770                 return;
 771         glMatrixMode(GL_PROJECTION);
 772     glLoadIdentity ();
 773         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
 774         glMatrixMode(GL_MODELVIEW);
 775     glLoadIdentity ();
 776         glDisable (GL_DEPTH_TEST);
 777         glDisable (GL_CULL_FACE);
 778         glDisable(GL_TEXTURE_2D);
 779         glEnable(GL_BLEND);
 780         if (lighthalf)
 781         {
 782                 glBlendFunc (GL_DST_COLOR, GL_ONE);
 783                 glBegin (GL_TRIANGLES);
 784                 glColor3f (1, 1, 1);
 785                 glVertex2f (-5000, -5000);
 786                 glVertex2f (10000, -5000);
 787                 glVertex2f (-5000, 10000);
 788                 glEnd ();
 789         }
 790         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 791         contrast.value = bound(0.2, contrast.value, 1.0);
 792         if (/*gl_polyblend.value && */v_blend[3])
 793         {
 794                 glBegin (GL_TRIANGLES);
 795                 glColor4fv (v_blend);
 796                 glVertex2f (-5000, -5000);
 797                 glVertex2f (10000, -5000);
 798                 glVertex2f (-5000, 10000);
 799                 glEnd ();
 800         }
 801
 802         glEnable (GL_CULL_FACE);
 803         glEnable (GL_DEPTH_TEST);
 804         glDisable(GL_BLEND);
 805         glEnable(GL_TEXTURE_2D);
 806 }
 807
 808 #define TIMEREPORT(VAR) \
 809         if (r_speeds2.value)\
 810         {\
 811                 temptime = currtime;\
 812                 currtime = Sys_FloatTime();\
 813                 VAR = (int) ((currtime - temptime) * 1000000.0);\
 814         }\
 815         else\
 816                 VAR = 0;
 817
 818 /*
 819 ================
 820 R_RenderView
 821
 822 r_refdef must be set before the first call
 823 ================
 824 */
 825 extern qboolean intimerefresh;
 826 extern void R_Sky();
 827 extern void UploadLightmaps();
 828 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];
 829 void R_RenderView (void)
 830 {
 831         double starttime, currtime, temptime;
 832         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;
 833 //      if (r_norefresh.value)
 834 //              return;
 835
 836         if (!r_worldentity.render.model || !cl.worldmodel)
 837                 Host_Error ("R_RenderView: NULL worldmodel");
 838
 839         lighthalf = gl_lightmode.value;
 840
 841         FOG_framebegin();
 842
 843         if (r_speeds2.value)
 844         {
 845                 starttime = currtime = Sys_FloatTime();
 846         }
 847         else
 848                 starttime = currtime = 0;
 849         R_Clear();
 850         TIMEREPORT(time_clear)
 851
 852         // render normal view
 853
 854         R_SetupFrame ();
 855         R_SetFrustum ();
 856         R_SetupGL ();
 857
 858         R_PrepareEntities();
 859
 860         skypolyclear();
 861         wallpolyclear();
 862         transpolyclear();
 863
 864         TIMEREPORT(time_setup)
 865
 866         R_DrawWorld ();
 867         TIMEREPORT(time_world)
 868         R_DrawEntitiesOnList1 (); // BSP models
 869         TIMEREPORT(time_bmodels)
 870
 871         UploadLightmaps();
 872         TIMEREPORT(time_upload)
 873
 874         skypolyrender(); // fogged sky polys, affects depth
 875
 876         if (skyname[0] && currentskypoly && !fogenabled)
 877                 R_Sky(); // does not affect depth, draws over the sky polys
 878         TIMEREPORT(time_sky)
 879
 880         wallpolyrender();
 881         TIMEREPORT(time_wall)
 882
 883         GL_DrawDecals();
 884         TIMEREPORT(time_drawdecals)
 885
 886         if (!intimerefresh && !r_speeds2.value)
 887                 S_ExtraUpdate ();       // don't let sound get messed up if going slow
 888
 889         R_DrawEntitiesOnList2 (); // other models
 890 //      R_RenderDlights ();
 891         R_DrawViewModel ();
 892         TIMEREPORT(time_models)
 893         R_MoveParticles ();
 894         TIMEREPORT(time_moveparticles)
 895         R_DrawParticles ();
 896         TIMEREPORT(time_drawparticles)
 897         R_MoveExplosions();
 898         TIMEREPORT(time_moveexplosions)
 899         R_DrawExplosions();
 900         TIMEREPORT(time_drawexplosions)
 901
 902         transpolyrender();
 903         TIMEREPORT(time_transpoly)
 904
 905         FOG_frameend();
 906
 907         GL_BlendView();
 908         TIMEREPORT(time_blend)
 909         if (r_speeds2.value)
 910         {
 911                 time_total = (int) ((Sys_FloatTime() - starttime) * 1000000.0);
 912                 sprintf(r_speeds2_string1, "%6i walls %6i dlitwalls %7i modeltris %7i transpoly\n", c_brush_polys, c_light_polys, c_alias_polys, currenttranspoly);
 913                 sprintf(r_speeds2_string2, "BSP: %6i faces %6i nodes %6i leafs\n", c_faces, c_nodes, c_leafs);
 914                 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);
 915                 sprintf(r_speeds2_string4, "%6ius clear  %6ius setup  %6ius world  %6ius bmodel %6ius upload", time_clear, time_setup, time_world, time_bmodels, time_upload);
 916                 sprintf(r_speeds2_string5, "%6ius sky    %6ius wall   %6ius models %6ius mpart  %6ius dpart ", time_sky, time_wall, time_models, time_moveparticles, time_drawparticles);
 917                 sprintf(r_speeds2_string6, "%6ius mexplo %6ius dexplo %6ius decals %6ius trans  %6ius blend ", time_moveexplosions, time_drawexplosions, time_drawdecals, time_transpoly, time_blend);
 918                 sprintf(r_speeds2_string7, "%6ius permdl %6ius total ", time_models / max(c_models, 1), time_total);
 919         }
 920 }