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);
 278         Cvar_RegisterVariable (&r_farclip);
 279         if (nehahra)
 280                 Cvar_SetValue("r_fullbrights", 0);
 281 //      if (gl_vendor && strstr(gl_vendor, "3Dfx"))
 282 //              gl_lightmode.value = 0;
 283         Cvar_RegisterVariable (&r_fullbright);
 284         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 285 }
 286
 287 extern void GL_Draw_Init(void);
 288 extern void GL_Main_Init(void);
 289 extern void GL_Models_Init(void);
 290 extern void GL_Poly_Init(void);
 291 extern void GL_Surf_Init(void);
 292 extern void GL_Screen_Init(void);
 293 extern void GL_Misc_Init(void);
 294 extern void R_Crosshairs_Init(void);
 295 extern void R_Light_Init(void);
 296 extern void R_Particles_Init(void);
 297 extern void R_Explosion_Init(void);
 298 extern void CL_Effects_Init(void);
 299
 300 void Render_Init(void)
 301 {
 302         R_Modules_Shutdown();
 303         GL_Draw_Init();
 304         GL_Main_Init();
 305         GL_Models_Init();
 306         GL_Poly_Init();
 307         GL_Surf_Init();
 308         GL_Screen_Init();
 309         GL_Misc_Init();
 310         R_Crosshairs_Init();
 311         R_Light_Init();
 312         R_Particles_Init();
 313         R_Explosion_Init();
 314         CL_Effects_Init();
 315         R_Decals_Init();
 316         R_Modules_Start();
 317 }
 318
 319 /*
 320 ===============
 321 GL_Init
 322 ===============
 323 */
 324 extern char *ENGINE_EXTENSIONS;
 325 void GL_Init (void)
 326 {
 327         gl_vendor = glGetString (GL_VENDOR);
 328         Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
 329         gl_renderer = glGetString (GL_RENDERER);
 330         Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
 331
 332         gl_version = glGetString (GL_VERSION);
 333         Con_Printf ("GL_VERSION: %s\n", gl_version);
 334         gl_extensions = glGetString (GL_EXTENSIONS);
 335         Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
 336
 337 //      Con_Printf ("%s %s\n", gl_renderer, gl_version);
 338
 339         VID_CheckMultitexture();
 340         VID_CheckCVA();
 341
 342         // LordHavoc: report supported extensions
 343         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 344
 345         glCullFace(GL_FRONT);
 346         glEnable(GL_TEXTURE_2D);
 347 //      glDisable(GL_ALPHA_TEST);
 348         glAlphaFunc(GL_GREATER, 0.5);
 349
 350 //      glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
 351 }
 352
 353
 354 /*
 355 void R_RotateForEntity (entity_t *e)
 356 {
 357         glTranslatef (e->origin[0],  e->origin[1],  e->origin[2]);
 358
 359         glRotatef (e->angles[1],  0, 0, 1);
 360         glRotatef (-e->angles[0],  0, 1, 0);
 361         glRotatef (e->angles[2],  1, 0, 0);
 362
 363         glScalef (e->scale, e->scale, e->scale); // LordHavoc: model scale
 364 }
 365 */
 366
 367 // LordHavoc: shading stuff
 368 vec3_t  shadevector;
 369 vec3_t  shadecolor;
 370
 371 float   modelalpha;
 372
 373 //==================================================================================
 374
 375 void R_DrawBrushModel (entity_t *e);
 376 void R_DrawSpriteModel (entity_t *e, frameblend_t *blend);
 377
 378 void R_LerpUpdate(entity_t *ent)
 379 {
 380         int frame;
 381         frame = ent->render.frame;
 382         if (ent->render.model && ent->render.frame >= ent->render.model->numframes)
 383         {
 384                 Con_Printf("R_LerpUpdate: no such frame%6i in \"%s\"\n", ent->render.frame, ent->render.model->name);
 385                 frame = 0;
 386         }
 387
 388         if (ent->render.lerp_model != ent->render.model)
 389         {
 390                 // reset all interpolation information
 391                 ent->render.lerp_model = ent->render.model;
 392                 ent->render.frame1 = ent->render.frame2 = frame;
 393                 ent->render.frame1start = ent->render.frame2start = cl.time;
 394                 ent->render.framelerp = 1;
 395                 ent->render.lerp_starttime = 0;
 396         }
 397         else if (ent->render.frame2 != frame)
 398         {
 399                 // transition to new frame
 400                 ent->render.frame1 = ent->render.frame2;
 401                 ent->render.frame1start = ent->render.frame2start;
 402                 ent->render.frame2 = frame;
 403                 ent->render.frame2start = cl.time;
 404                 ent->render.framelerp = 0;
 405                 ent->render.lerp_starttime = cl.time;
 406         }
 407         else
 408         {
 409                 // lerp_starttime < 0 is used to prevent changing of framelerp
 410                 if (ent->render.lerp_starttime >= 0)
 411                 {
 412                         // update transition
 413                         ent->render.framelerp = (cl.time - ent->render.lerp_starttime) * 10;
 414                         ent->render.framelerp = bound(0, ent->render.framelerp, 1);
 415                 }
 416         }
 417 }
 418
 419
 420 void R_PrepareEntities (void)
 421 {
 422         int i;
 423         entity_t *ent;
 424         vec3_t v;
 425         // this updates entities that are supposed to be view relative
 426         for (i = 0;i < cl_numvisedicts;i++)
 427         {
 428                 ent = cl_visedicts[i];
 429
 430                 if (ent->render.flags & RENDER_VIEWMODEL)
 431                 {
 432                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 433                         ent->render.flags -= RENDER_VIEWMODEL;
 434                         // transform origin
 435                         VectorCopy(ent->render.origin, v);
 436                         ent->render.origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 437                         ent->render.origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 438                         ent->render.origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 439                         // adjust angles
 440                         VectorAdd(ent->render.angles, r_refdef.viewangles, ent->render.angles);
 441                 }
 442         }
 443 }
 444
 445 /*
 446 =============
 447 R_DrawEntitiesOnList
 448 =============
 449 */
 450 // LordHavoc: split so bmodels are rendered before any other objects
 451 void R_DrawEntitiesOnList1 (void)
 452 {
 453         int             i;
 454
 455         if (!r_drawentities.value)
 456                 return;
 457
 458         for (i = 0;i < cl_numvisedicts;i++)
 459         {
 460                 if (cl_visedicts[i]->render.model->type != mod_brush)
 461                         continue;
 462                 currententity = cl_visedicts[i];
 463                 modelalpha = currententity->render.alpha;
 464
 465                 R_DrawBrushModel (currententity);
 466         }
 467 }
 468
 469 void R_DrawEntitiesOnList2 (void)
 470 {
 471         int             i;
 472         frameblend_t blend[4];
 473
 474         if (!r_drawentities.value)
 475                 return;
 476
 477         for (i = 0;i < cl_numvisedicts;i++)
 478         {
 479                 currententity = cl_visedicts[i];
 480                 modelalpha = currententity->render.alpha;
 481
 482                 switch (currententity->render.model->type)
 483                 {
 484                 case mod_alias:
 485                         R_LerpUpdate(currententity);
 486                         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 487                         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);
 488                         break;
 489
 490                 case mod_sprite:
 491                         R_LerpUpdate(currententity);
 492                         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 493                         R_DrawSpriteModel (currententity, blend);
 494                         break;
 495
 496                 default:
 497                         break;
 498                 }
 499         }
 500 }
 501
 502 /*
 503 =============
 504 R_DrawViewModel
 505 =============
 506 */
 507 void R_DrawViewModel (void)
 508 {
 509         frameblend_t blend[4];
 510
 511         if (!r_drawviewmodel.value || chase_active.value || envmap || !r_drawentities.value || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 512                 return;
 513
 514         currententity = &cl.viewent;
 515         currententity->render.alpha = modelalpha = cl_entities[cl.viewentity].render.alpha; // LordHavoc: if the player is transparent, so is the gun
 516         currententity->render.effects = cl_entities[cl.viewentity].render.effects;
 517         currententity->render.scale = 1;
 518         VectorCopy(cl_entities[cl.viewentity].render.colormod, currententity->render.colormod);
 519
 520         R_LerpUpdate(currententity);
 521         R_LerpAnimation(currententity->render.model, currententity->render.frame1, currententity->render.frame2, currententity->render.frame1start, currententity->render.frame2start, currententity->render.framelerp, blend);
 522
 523         // hack the depth range to prevent view model from poking into walls
 524         glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
 525         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);
 526         glDepthRange (gldepthmin, gldepthmax);
 527 }
 528
 529 void R_DrawBrushModel (entity_t *e);
 530
 531 void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
 532
 533 void R_SetFrustum (void)
 534 {
 535         int             i;
 536
 537         if (r_refdef.fov_x == 90)
 538         {
 539                 // front side is visible
 540
 541                 VectorAdd (vpn, vright, frustum[0].normal);
 542                 VectorSubtract (vpn, vright, frustum[1].normal);
 543
 544                 VectorAdd (vpn, vup, frustum[2].normal);
 545                 VectorSubtract (vpn, vup, frustum[3].normal);
 546         }
 547         else
 548         {
 549                 // rotate VPN right by FOV_X/2 degrees
 550                 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 551                 // rotate VPN left by FOV_X/2 degrees
 552                 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 553                 // rotate VPN up by FOV_X/2 degrees
 554                 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 555                 // rotate VPN down by FOV_X/2 degrees
 556                 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 557         }
 558
 559         for (i=0 ; i<4 ; i++)
 560         {
 561                 frustum[i].type = PLANE_ANYZ;
 562                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 563 //              frustum[i].signbits = SignbitsForPlane (&frustum[i]);
 564                 BoxOnPlaneSideClassify(&frustum[i]);
 565         }
 566 }
 567
 568 void R_AnimateLight (void);
 569 void V_CalcBlend (void);
 570
 571 /*
 572 ===============
 573 R_SetupFrame
 574 ===============
 575 */
 576 void R_SetupFrame (void)
 577 {
 578 // don't allow cheats in multiplayer
 579         if (cl.maxclients > 1)
 580         {
 581                 Cvar_Set ("r_fullbright", "0");
 582                 Cvar_Set ("r_ambient", "0");
 583         }
 584
 585         r_framecount++;
 586
 587 // build the transformation matrix for the given view angles
 588         VectorCopy (r_refdef.vieworg, r_origin);
 589
 590         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 591
 592 // current viewleaf
 593         r_oldviewleaf = r_viewleaf;
 594         r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
 595
 596         V_SetContentsColor (r_viewleaf->contents);
 597         V_CalcBlend ();
 598
 599         r_cache_thrash = false;
 600
 601         c_brush_polys = 0;
 602         c_alias_polys = 0;
 603         c_light_polys = 0;
 604         c_faces = 0;
 605         c_nodes = 0;
 606         c_leafs = 0;
 607         c_models = 0;
 608         c_bmodels = 0;
 609         c_sprites = 0;
 610         c_particles = 0;
 611 //      c_dlights = 0;
 612
 613         R_AnimateLight ();
 614 }
 615
 616
 617 void MYgluPerspective( GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar )
 618 {
 619    GLdouble xmin, xmax, ymin, ymax;
 620
 621    ymax = zNear * tan( fovy * M_PI / 360.0 );
 622    ymin = -ymax;
 623
 624    xmin = ymin * aspect;
 625    xmax = ymax * aspect;
 626
 627    glFrustum( xmin, xmax, ymin, ymax, zNear, zFar );
 628 }
 629
 630
 631 /*
 632 =============
 633 R_SetupGL
 634 =============
 635 */
 636 void R_SetupGL (void)
 637 {
 638         float   screenaspect;
 639         int             x, x2, y2, y, w, h;
 640
 641         if (!r_render.value)
 642                 return;
 643         //
 644         // set up viewpoint
 645         //
 646         glMatrixMode(GL_PROJECTION);
 647     glLoadIdentity ();
 648         x = r_refdef.vrect.x * glwidth/vid.width;
 649         x2 = (r_refdef.vrect.x + r_refdef.vrect.width) * glwidth/vid.width;
 650         y = (vid.height-r_refdef.vrect.y) * glheight/vid.height;
 651         y2 = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height)) * glheight/vid.height;
 652
 653         // fudge around because of frac screen scale
 654         if (x > 0)
 655                 x--;
 656         if (x2 < glwidth)
 657                 x2++;
 658         if (y2 < 0)
 659                 y2--;
 660         if (y < glheight)
 661                 y++;
 662
 663         w = x2 - x;
 664         h = y - y2;
 665
 666         if (envmap)
 667         {
 668                 x = y2 = 0;
 669                 w = h = 256;
 670         }
 671
 672         glViewport (glx + x, gly + y2, w, h);
 673     screenaspect = (float)r_refdef.vrect.width/r_refdef.vrect.height;
 674 //      yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*180/M_PI;
 675         MYgluPerspective (r_refdef.fov_y,  screenaspect,  4,  r_farclip.value);
 676
 677         glCullFace(GL_FRONT);
 678
 679         glMatrixMode(GL_MODELVIEW);
 680     glLoadIdentity ();
 681
 682     glRotatef (-90,  1, 0, 0);      // put Z going up
 683     glRotatef (90,  0, 0, 1);       // put Z going up
 684     glRotatef (-r_refdef.viewangles[2],  1, 0, 0);
 685     glRotatef (-r_refdef.viewangles[0],  0, 1, 0);
 686     glRotatef (-r_refdef.viewangles[1],  0, 0, 1);
 687     glTranslatef (-r_refdef.vieworg[0],  -r_refdef.vieworg[1],  -r_refdef.vieworg[2]);
 688
 689         glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix);
 690
 691         //
 692         // set drawing parms
 693         //
 694 //      if (gl_cull.value)
 695                 glEnable(GL_CULL_FACE);
 696 //      else
 697 //              glDisable(GL_CULL_FACE);
 698
 699         glEnable(GL_BLEND); // was Disable
 700         glDisable(GL_ALPHA_TEST);
 701         glAlphaFunc(GL_GREATER, 0.5);
 702         glEnable(GL_DEPTH_TEST);
 703         glDepthMask(1);
 704         glShadeModel(GL_SMOOTH);
 705 }
 706
 707 /*
 708 =============
 709 R_Clear
 710 =============
 711 */
 712 void R_Clear (void)
 713 {
 714         if (!r_render.value)
 715                 return;
 716 //      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // LordHavoc: moved to SCR_UpdateScreen
 717         gldepthmin = 0;
 718         gldepthmax = 1;
 719         glDepthFunc (GL_LEQUAL);
 720
 721         glDepthRange (gldepthmin, gldepthmax);
 722 }
 723
 724 // LordHavoc: my trick to *FIX* GLQuake lighting once and for all :)
 725 void GL_Brighten(void)
 726 {
 727         if (!r_render.value)
 728                 return;
 729         glMatrixMode(GL_PROJECTION);
 730     glLoadIdentity ();
 731         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
 732         glMatrixMode(GL_MODELVIEW);
 733     glLoadIdentity ();
 734         glDisable (GL_DEPTH_TEST);
 735         glDisable (GL_CULL_FACE);
 736         glDisable(GL_TEXTURE_2D);
 737         glEnable(GL_BLEND);
 738         glBlendFunc (GL_DST_COLOR, GL_ONE);
 739         glBegin (GL_TRIANGLES);
 740         glColor3f (1, 1, 1);
 741         glVertex2f (-5000, -5000);
 742         glVertex2f (10000, -5000);
 743         glVertex2f (-5000, 10000);
 744         glEnd ();
 745         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 746         glDisable(GL_BLEND);
 747         glEnable(GL_TEXTURE_2D);
 748         glEnable (GL_DEPTH_TEST);
 749         glEnable (GL_CULL_FACE);
 750 }
 751
 752 void GL_BlendView(void)
 753 {
 754         if (!r_render.value)
 755                 return;
 756
 757         if (v_blend[3] < 0.01f)
 758                 return;
 759
 760         glMatrixMode(GL_PROJECTION);
 761     glLoadIdentity ();
 762         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
 763         glMatrixMode(GL_MODELVIEW);
 764     glLoadIdentity ();
 765         glDisable (GL_DEPTH_TEST);
 766         glDisable (GL_CULL_FACE);
 767         glDisable(GL_TEXTURE_2D);
 768         glEnable(GL_BLEND);
 769         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 770         glBegin (GL_TRIANGLES);
 771         if (lighthalf)
 772                 glColor4f (v_blend[0] * 0.5f, v_blend[1] * 0.5f, v_blend[2] * 0.5f, v_blend[3]);
 773         else
 774                 glColor4fv (v_blend);
 775         glVertex2f (-5000, -5000);
 776         glVertex2f (10000, -5000);
 777         glVertex2f (-5000, 10000);
 778         glEnd ();
 779
 780         glEnable (GL_CULL_FACE);
 781         glEnable (GL_DEPTH_TEST);
 782         glDisable(GL_BLEND);
 783         glEnable(GL_TEXTURE_2D);
 784 }
 785
 786 #define TIMEREPORT(VAR) \
 787         if (r_speeds2.value)\
 788         {\
 789                 temptime = currtime;\
 790                 currtime = Sys_DoubleTime();\
 791                 VAR = (int) ((currtime - temptime) * 1000000.0);\
 792         }\
 793         else\
 794                 VAR = 0;
 795
 796 /*
 797 ================
 798 R_RenderView
 799
 800 r_refdef must be set before the first call
 801 ================
 802 */
 803 extern void R_Sky(void);
 804 extern void UploadLightmaps(void);
 805 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];
 806 void R_RenderView (void)
 807 {
 808         double starttime, currtime, temptime;
 809         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;
 810 //      if (r_norefresh.value)
 811 //              return;
 812
 813         if (!r_worldentity.render.model || !cl.worldmodel)
 814                 Host_Error ("R_RenderView: NULL worldmodel");
 815
 816         lighthalf = gl_lightmode.value;
 817
 818         FOG_framebegin();
 819
 820         if (r_speeds2.value)
 821                 starttime = currtime = Sys_DoubleTime();
 822         else
 823                 starttime = currtime = 0;
 824         R_Clear();
 825         TIMEREPORT(time_clear)
 826
 827         // render normal view
 828
 829         R_SetupFrame ();
 830         R_SetFrustum ();
 831         R_SetupGL ();
 832
 833         R_PrepareEntities();
 834
 835         skypolyclear();
 836         wallpolyclear();
 837         transpolyclear();
 838
 839         TIMEREPORT(time_setup)
 840
 841         R_DrawWorld ();
 842         TIMEREPORT(time_world)
 843         R_DrawEntitiesOnList1 (); // BSP models
 844         TIMEREPORT(time_bmodels)
 845
 846         UploadLightmaps();
 847         TIMEREPORT(time_upload)
 848
 849         skypolyrender(); // fogged sky polys, affects depth
 850
 851         if (currentskypoly)
 852                 R_Sky(); // does not affect depth, draws over the sky polys
 853         TIMEREPORT(time_sky)
 854
 855         wallpolyrender();
 856         TIMEREPORT(time_wall)
 857
 858         GL_DrawDecals();
 859         TIMEREPORT(time_drawdecals)
 860
 861         if (!intimerefresh && !r_speeds2.value)
 862                 S_ExtraUpdate ();       // don't let sound get messed up if going slow
 863
 864         R_DrawEntitiesOnList2 (); // other models
 865 //      R_RenderDlights ();
 866         R_DrawViewModel ();
 867         TIMEREPORT(time_models)
 868         R_MoveParticles ();
 869         TIMEREPORT(time_moveparticles)
 870         R_DrawParticles ();
 871         TIMEREPORT(time_drawparticles)
 872         R_MoveExplosions();
 873         TIMEREPORT(time_moveexplosions)
 874         R_DrawExplosions();
 875         TIMEREPORT(time_drawexplosions)
 876
 877         transpolyrender();
 878         TIMEREPORT(time_transpoly)
 879
 880         FOG_frameend();
 881
 882         GL_BlendView();
 883         TIMEREPORT(time_blend)
 884         if (r_speeds2.value)
 885         {
 886                 time_total = (int) ((Sys_DoubleTime() - starttime) * 1000000.0);
 887                 sprintf(r_speeds2_string1, "%6i walls %6i dlitwalls %7i modeltris %7i transpoly\n", c_brush_polys, c_light_polys, c_alias_polys, currenttranspoly);
 888                 sprintf(r_speeds2_string2, "BSP: %6i faces %6i nodes %6i leafs\n", c_faces, c_nodes, c_leafs);
 889                 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);
 890                 sprintf(r_speeds2_string4, "%6ius clear  %6ius setup  %6ius world  %6ius bmodel %6ius upload", time_clear, time_setup, time_world, time_bmodels, time_upload);
 891                 sprintf(r_speeds2_string5, "%6ius sky    %6ius wall   %6ius models %6ius mpart  %6ius dpart ", time_sky, time_wall, time_models, time_moveparticles, time_drawparticles);
 892                 sprintf(r_speeds2_string6, "%6ius mexplo %6ius dexplo %6ius decals %6ius trans  %6ius blend ", time_moveexplosions, time_drawexplosions, time_drawdecals, time_transpoly, time_blend);
 893                 sprintf(r_speeds2_string7, "%6ius permdl %6ius total ", time_models / max(c_models, 1), time_total);
 894         }
 895 }