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 // used for dlight push checking and other things
  25 int r_framecount;
  26
  27 mplane_t frustum[4];
  28
  29 int c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
  30
  31 // true during envmap command capture
  32 qboolean envmap;
  33
  34 float r_farclip;
  35
  36 // view origin
  37 vec3_t r_origin;
  38 vec3_t vpn;
  39 vec3_t vright;
  40 vec3_t vup;
  41
  42 //
  43 // screen size info
  44 //
  45 refdef_t r_refdef;
  46
  47 // 8.8 fraction of base light value
  48 unsigned short d_lightstylevalue[256];
  49
  50 cvar_t r_drawentities = {0, "r_drawentities","1"};
  51 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
  52 cvar_t r_speeds = {0, "r_speeds","0"};
  53 cvar_t r_fullbright = {0, "r_fullbright","0"};
  54 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  55 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  56 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  57
  58 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
  59 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  60 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
  61 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
  62 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
  63 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
  64 cvar_t gl_fogend = {0, "gl_fogend","0"};
  65
  66 cvar_t r_textureunits = {0, "r_textureunits", "32"};
  67
  68 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
  69 {
  70         int i;
  71         for (i = 0;i < verts;i++)
  72         {
  73                 out[0] = in[0] * r;
  74                 out[1] = in[1] * g;
  75                 out[2] = in[2] * b;
  76                 out[3] = in[3];
  77                 in += 4;
  78                 out += 4;
  79         }
  80 }
  81
  82 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
  83 {
  84         int i;
  85         for (i = 0;i < verts;i++)
  86         {
  87                 out[0] = r;
  88                 out[1] = g;
  89                 out[2] = b;
  90                 out[3] = a;
  91                 out += 4;
  92         }
  93 }
  94
  95 /*
  96 ====================
  97 R_TimeRefresh_f
  98
  99 For program optimization
 100 ====================
 101 */
 102 qboolean intimerefresh = 0;
 103 static void R_TimeRefresh_f (void)
 104 {
 105         int i;
 106         float start, stop, time;
 107
 108         intimerefresh = 1;
 109         start = Sys_DoubleTime ();
 110         for (i = 0;i < 128;i++)
 111         {
 112                 r_refdef.viewangles[0] = 0;
 113                 r_refdef.viewangles[1] = i/128.0*360.0;
 114                 r_refdef.viewangles[2] = 0;
 115                 CL_UpdateScreen();
 116         }
 117
 118         stop = Sys_DoubleTime ();
 119         intimerefresh = 0;
 120         time = stop-start;
 121         Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
 122 }
 123
 124 vec3_t fogcolor;
 125 vec_t fogdensity;
 126 float fog_density, fog_red, fog_green, fog_blue;
 127 qboolean fogenabled;
 128 qboolean oldgl_fogenable;
 129 void R_SetupFog(void)
 130 {
 131         if (gamemode == GAME_NEHAHRA)
 132         {
 133                 if (gl_fogenable.integer)
 134                 {
 135                         oldgl_fogenable = true;
 136                         fog_density = gl_fogdensity.value;
 137                         fog_red = gl_fogred.value;
 138                         fog_green = gl_foggreen.value;
 139                         fog_blue = gl_fogblue.value;
 140                 }
 141                 else if (oldgl_fogenable)
 142                 {
 143                         oldgl_fogenable = false;
 144                         fog_density = 0;
 145                         fog_red = 0;
 146                         fog_green = 0;
 147                         fog_blue = 0;
 148                 }
 149         }
 150         if (fog_density)
 151         {
 152                 fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 153                 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 154                 fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 155         }
 156         if (fog_density)
 157         {
 158                 fogenabled = true;
 159                 fogdensity = -4000.0f / (fog_density * fog_density);
 160                 // fog color was already set
 161         }
 162         else
 163                 fogenabled = false;
 164 }
 165
 166 // FIXME: move this to client?
 167 void FOG_clear(void)
 168 {
 169         if (gamemode == GAME_NEHAHRA)
 170         {
 171                 Cvar_Set("gl_fogenable", "0");
 172                 Cvar_Set("gl_fogdensity", "0.2");
 173                 Cvar_Set("gl_fogred", "0.3");
 174                 Cvar_Set("gl_foggreen", "0.3");
 175                 Cvar_Set("gl_fogblue", "0.3");
 176         }
 177         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 178 }
 179
 180 // FIXME: move this to client?
 181 void FOG_registercvars(void)
 182 {
 183         if (gamemode == GAME_NEHAHRA)
 184         {
 185                 Cvar_RegisterVariable (&gl_fogenable);
 186                 Cvar_RegisterVariable (&gl_fogdensity);
 187                 Cvar_RegisterVariable (&gl_fogred);
 188                 Cvar_RegisterVariable (&gl_foggreen);
 189                 Cvar_RegisterVariable (&gl_fogblue);
 190                 Cvar_RegisterVariable (&gl_fogstart);
 191                 Cvar_RegisterVariable (&gl_fogend);
 192         }
 193 }
 194
 195 void gl_main_start(void)
 196 {
 197 }
 198
 199 void gl_main_shutdown(void)
 200 {
 201 }
 202
 203 extern void CL_ParseEntityLump(char *entitystring);
 204 void gl_main_newmap(void)
 205 {
 206         if (cl.worldmodel && cl.worldmodel->entities)
 207                 CL_ParseEntityLump(cl.worldmodel->entities);
 208         r_framecount = 1;
 209 }
 210
 211 void GL_Main_Init(void)
 212 {
 213 // FIXME: move this to client?
 214         FOG_registercvars();
 215         Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
 216         Cvar_RegisterVariable (&r_drawentities);
 217         Cvar_RegisterVariable (&r_drawviewmodel);
 218         Cvar_RegisterVariable (&r_speeds);
 219         Cvar_RegisterVariable (&r_fullbrights);
 220         Cvar_RegisterVariable (&r_wateralpha);
 221         Cvar_RegisterVariable (&r_dynamic);
 222         Cvar_RegisterVariable (&r_fullbright);
 223         Cvar_RegisterVariable (&r_textureunits);
 224         if (gamemode == GAME_NEHAHRA)
 225                 Cvar_SetValue("r_fullbrights", 0);
 226         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 227 }
 228
 229 vec3_t r_farclip_origin;
 230 vec3_t r_farclip_direction;
 231 vec_t r_farclip_directiondist;
 232 vec_t r_farclip_meshfarclip;
 233 int r_farclip_directionbit0;
 234 int r_farclip_directionbit1;
 235 int r_farclip_directionbit2;
 236
 237 // start a farclip measuring session
 238 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip)
 239 {
 240         VectorCopy(origin, r_farclip_origin);
 241         VectorCopy(direction, r_farclip_direction);
 242         r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
 243         r_farclip_directionbit0 = r_farclip_direction[0] < 0;
 244         r_farclip_directionbit1 = r_farclip_direction[1] < 0;
 245         r_farclip_directionbit2 = r_farclip_direction[2] < 0;
 246         r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
 247 }
 248
 249 // enlarge farclip to accomodate box
 250 void R_FarClip_Box(vec3_t mins, vec3_t maxs)
 251 {
 252         float d;
 253         d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
 254           + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
 255           + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
 256         if (r_farclip_meshfarclip < d)
 257                 r_farclip_meshfarclip = d;
 258 }
 259
 260 // return farclip value
 261 float R_FarClip_Finish(void)
 262 {
 263         return r_farclip_meshfarclip - r_farclip_directiondist;
 264 }
 265
 266 /*
 267 ===============
 268 R_NewMap
 269 ===============
 270 */
 271 void R_NewMap (void)
 272 {
 273         R_Modules_NewMap();
 274 }
 275
 276 extern void R_Textures_Init(void);
 277 extern void Mod_RenderInit(void);
 278 extern void GL_Draw_Init(void);
 279 extern void GL_Main_Init(void);
 280 extern void GL_Models_Init(void);
 281 extern void R_Sky_Init(void);
 282 extern void GL_Surf_Init(void);
 283 extern void R_Crosshairs_Init(void);
 284 extern void R_Light_Init(void);
 285 extern void R_Particles_Init(void);
 286 extern void R_Explosion_Init(void);
 287 extern void ui_init(void);
 288 extern void gl_backend_init(void);
 289
 290 void Render_Init(void)
 291 {
 292         R_Modules_Shutdown();
 293         R_Textures_Init();
 294         Mod_RenderInit();
 295         gl_backend_init();
 296         R_MeshQueue_Init();
 297         GL_Draw_Init();
 298         GL_Main_Init();
 299         GL_Models_Init();
 300         R_Sky_Init();
 301         GL_Surf_Init();
 302         R_Crosshairs_Init();
 303         R_Light_Init();
 304         R_Particles_Init();
 305         R_Explosion_Init();
 306         ui_init();
 307         R_Modules_Start();
 308 }
 309
 310 /*
 311 ===============
 312 GL_Init
 313 ===============
 314 */
 315 extern char *ENGINE_EXTENSIONS;
 316 void GL_Init (void)
 317 {
 318         VID_CheckExtensions();
 319
 320         // LordHavoc: report supported extensions
 321         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 322
 323         qglCullFace(GL_FRONT);
 324         qglEnable(GL_TEXTURE_2D);
 325 }
 326
 327
 328 //==================================================================================
 329
 330 static void R_MarkEntities (void)
 331 {
 332         int i;
 333         vec3_t v;
 334         entity_render_t *ent;
 335
 336         ent = &cl_entities[0].render;
 337         Matrix4x4_CreateIdentity(&ent->matrix);
 338         Matrix4x4_CreateIdentity(&ent->inversematrix);
 339
 340         if (cl.worldmodel)
 341                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 342
 343         if (!r_drawentities.integer)
 344                 return;
 345
 346         for (i = 0;i < r_refdef.numentities;i++)
 347         {
 348                 ent = r_refdef.entities[i];
 349                 Mod_CheckLoaded(ent->model);
 350
 351                 // move view-relative models to where they should be
 352                 if (ent->flags & RENDER_VIEWMODEL)
 353                 {
 354                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 355                         ent->flags -= RENDER_VIEWMODEL;
 356                         // transform origin
 357                         VectorCopy(ent->origin, v);
 358                         ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 359                         ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 360                         ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 361                         // adjust angles
 362                         VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
 363                 }
 364
 365                 if (R_CullBox(ent->mins, ent->maxs))
 366                         continue;
 367
 368                 ent->visframe = r_framecount;
 369                 VectorCopy(ent->angles, v);
 370                 if (!ent->model || ent->model->type != mod_brush)
 371                         v[0] = -v[0];
 372                 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
 373                 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 374                 R_LerpAnimation(ent);
 375                 R_UpdateEntLights(ent);
 376                 R_FarClip_Box(ent->mins, ent->maxs);
 377         }
 378 }
 379
 380 // only used if skyrendermasked, and normally returns false
 381 int R_DrawBrushModelsSky (void)
 382 {
 383         int i, sky;
 384         entity_render_t *ent;
 385
 386         if (!r_drawentities.integer)
 387                 return false;
 388
 389         sky = false;
 390         for (i = 0;i < r_refdef.numentities;i++)
 391         {
 392                 ent = r_refdef.entities[i];
 393                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 394                 {
 395                         ent->model->DrawSky(ent);
 396                         sky = true;
 397                 }
 398         }
 399         return sky;
 400 }
 401
 402 /*
 403 =============
 404 R_DrawViewModel
 405 =============
 406 */
 407 void R_DrawViewModel (void)
 408 {
 409         entity_render_t *ent;
 410
 411         // FIXME: move these checks to client
 412         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 413                 return;
 414
 415         ent = &cl.viewent.render;
 416         Mod_CheckLoaded(ent->model);
 417         R_LerpAnimation(ent);
 418         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 419         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 420         R_UpdateEntLights(ent);
 421         ent->model->Draw(ent);
 422 }
 423
 424 void R_DrawNoModel(entity_render_t *ent);
 425 void R_DrawModels (void)
 426 {
 427         int i;
 428         entity_render_t *ent;
 429
 430         if (!r_drawentities.integer)
 431                 return;
 432
 433         R_DrawViewModel();
 434         for (i = 0;i < r_refdef.numentities;i++)
 435         {
 436                 ent = r_refdef.entities[i];
 437                 if (ent->visframe == r_framecount)
 438                 {
 439                         if (ent->model)
 440                         {
 441                                 if (ent->model->Draw)
 442                                         ent->model->Draw(ent);
 443                         }
 444                         else
 445                                 R_DrawNoModel(ent);
 446                 }
 447         }
 448 }
 449
 450 static void R_SetFrustum (void)
 451 {
 452         int i;
 453
 454         // LordHavoc: note to all quake engine coders, the special case for 90
 455         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
 456         // disabled as well.
 457         // rotate VPN right by FOV_X/2 degrees
 458         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 459         // rotate VPN left by FOV_X/2 degrees
 460         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 461         // rotate VPN up by FOV_X/2 degrees
 462         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 463         // rotate VPN down by FOV_X/2 degrees
 464         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 465
 466         for (i = 0;i < 4;i++)
 467         {
 468                 frustum[i].type = PLANE_ANYZ;
 469                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 470                 PlaneClassify(&frustum[i]);
 471         }
 472 }
 473
 474 /*
 475 ===============
 476 R_SetupFrame
 477 ===============
 478 */
 479 static void R_SetupFrame (void)
 480 {
 481 // don't allow cheats in multiplayer
 482         if (cl.maxclients > 1)
 483         {
 484                 if (r_fullbright.integer != 0)
 485                         Cvar_Set ("r_fullbright", "0");
 486                 if (r_ambient.value != 0)
 487                         Cvar_Set ("r_ambient", "0");
 488         }
 489
 490         r_framecount++;
 491
 492 // build the transformation matrix for the given view angles
 493         VectorCopy (r_refdef.vieworg, r_origin);
 494
 495         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 496
 497         R_AnimateLight ();
 498 }
 499
 500
 501 static void R_BlendView(void)
 502 {
 503         rmeshstate_t m;
 504         float r;
 505
 506         if (r_refdef.viewblend[3] < 0.01f)
 507                 return;
 508
 509         memset(&m, 0, sizeof(m));
 510         m.blendfunc1 = GL_SRC_ALPHA;
 511         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 512         m.wantoverbright = false;
 513         m.depthdisable = true; // magic
 514         Matrix4x4_CreateIdentity(&m.matrix);
 515         R_Mesh_State(&m);
 516
 517         varray_element[0] = 0;
 518         varray_element[1] = 1;
 519         varray_element[2] = 2;
 520         varray_color[0] = varray_color[4] = varray_color[8] = r_refdef.viewblend[0];
 521         varray_color[1] = varray_color[5] = varray_color[9] = r_refdef.viewblend[1];
 522         varray_color[2] = varray_color[6] = varray_color[10] = r_refdef.viewblend[2];
 523         varray_color[3] = varray_color[7] = varray_color[11] = r_refdef.viewblend[3];
 524         r = 64000;
 525         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
 526         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
 527         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
 528         r *= 3;
 529         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
 530         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
 531         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
 532         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
 533         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
 534         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
 535         R_Mesh_Draw(3, 1);
 536 }
 537
 538 /*
 539 ================
 540 R_RenderView
 541
 542 r_refdef must be set before the first call
 543 ================
 544 */
 545 void R_RenderView (void)
 546 {
 547         entity_render_t *world;
 548         if (!r_refdef.entities/* || !cl.worldmodel*/)
 549                 return; //Host_Error ("R_RenderView: NULL worldmodel");
 550
 551         world = &cl_entities[0].render;
 552
 553         // FIXME: move to client
 554         R_MoveExplosions();
 555         R_TimeReport("mexplosion");
 556
 557         R_Textures_Frame();
 558         R_SetupFrame();
 559         R_SetFrustum();
 560         R_SetupFog();
 561         R_SkyStartFrame();
 562         R_BuildLightList();
 563         R_TimeReport("setup");
 564
 565         R_FarClip_Start(r_origin, vpn, 768.0f);
 566         R_MarkEntities();
 567         r_farclip = R_FarClip_Finish() + 256.0f;
 568         R_TimeReport("markentity");
 569
 570         R_Mesh_Start(r_farclip);
 571         R_MeshQueue_BeginScene();
 572
 573         if (R_DrawBrushModelsSky())
 574                 R_TimeReport("bmodelsky");
 575
 576         // must occur early because it can draw sky
 577         R_DrawWorld(world);
 578         R_TimeReport("world");
 579
 580         // don't let sound skip if going slow
 581         if (!intimerefresh && !r_speeds.integer)
 582                 S_ExtraUpdate ();
 583
 584         R_DrawModels();
 585         R_TimeReport("models");
 586
 587         R_DrawParticles();
 588         R_TimeReport("particles");
 589
 590         R_DrawExplosions();
 591         R_TimeReport("explosions");
 592
 593         R_MeshQueue_RenderTransparent();
 594         R_TimeReport("drawtrans");
 595
 596         R_DrawCoronas();
 597         R_TimeReport("coronas");
 598
 599         R_DrawCrosshair();
 600         R_TimeReport("crosshair");
 601
 602         R_BlendView();
 603         R_TimeReport("blendview");
 604
 605         R_MeshQueue_Render();
 606         R_MeshQueue_EndScene();
 607         R_Mesh_Finish();
 608         R_TimeReport("meshfinish");
 609 }
 610
 611 /*
 612 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
 613 {
 614         int i;
 615         float *v, *c, f1, f2, diff[3];
 616         rmeshstate_t m;
 617         m.blendfunc1 = GL_SRC_ALPHA;
 618         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 619         m.wantoverbright = false;
 620         Matrix4x4_CreateIdentity(&m.matrix);
 621         R_Mesh_State(&m);
 622
 623         varray_element
 624         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
 625         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
 626         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
 627         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
 628         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
 629         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
 630         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
 631         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
 632         varray_color[ 0] = varray_color[ 4] = varray_color[ 8] = varray_color[12] = varray_color[16] = varray_color[20] = varray_color[24] = varray_color[28] = cr * mesh_colorscale;
 633         varray_color[ 1] = varray_color[ 5] = varray_color[ 9] = varray_color[13] = varray_color[17] = varray_color[21] = varray_color[25] = varray_color[29] = cg * mesh_colorscale;
 634         varray_color[ 2] = varray_color[ 6] = varray_color[10] = varray_color[14] = varray_color[18] = varray_color[22] = varray_color[26] = varray_color[30] = cb * mesh_colorscale;
 635         varray_color[ 3] = varray_color[ 7] = varray_color[11] = varray_color[15] = varray_color[19] = varray_color[23] = varray_color[27] = varray_color[31] = ca;
 636         if (fogenabled)
 637         {
 638                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
 639                 {
 640                         VectorSubtract(v, r_origin, diff);
 641                         f2 = exp(fogdensity/DotProduct(diff, diff));
 642                         f1 = 1 - f2;
 643                         f2 *= mesh_colorscale;
 644                         c[0] = c[0] * f1 + fogcolor[0] * f2;
 645                         c[1] = c[1] * f1 + fogcolor[1] * f2;
 646                         c[2] = c[2] * f1 + fogcolor[2] * f2;
 647                 }
 648         }
 649         R_Mesh_Draw(8, 12);
 650 }
 651 */
 652
 653 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
 654 {
 655         const entity_render_t *ent = calldata1;
 656         int i;
 657         float f1, f2, *c, diff[3];
 658         rmeshstate_t m;
 659         memset(&m, 0, sizeof(m));
 660         if (ent->flags & EF_ADDITIVE)
 661         {
 662                 m.blendfunc1 = GL_SRC_ALPHA;
 663                 m.blendfunc2 = GL_ONE;
 664         }
 665         else if (ent->alpha < 1)
 666         {
 667                 m.blendfunc1 = GL_SRC_ALPHA;
 668                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 669         }
 670         else
 671         {
 672                 m.blendfunc1 = GL_ONE;
 673                 m.blendfunc2 = GL_ZERO;
 674         }
 675         m.wantoverbright = false;
 676         m.matrix = ent->matrix;
 677         R_Mesh_State(&m);
 678
 679         varray_element[ 0] = 5;varray_element[ 1] = 2;varray_element[ 2] = 0;
 680         varray_element[ 3] = 5;varray_element[ 4] = 1;varray_element[ 5] = 2;
 681         varray_element[ 6] = 5;varray_element[ 7] = 0;varray_element[ 8] = 3;
 682         varray_element[ 9] = 5;varray_element[10] = 3;varray_element[11] = 1;
 683         varray_element[12] = 0;varray_element[13] = 2;varray_element[14] = 4;
 684         varray_element[15] = 2;varray_element[16] = 1;varray_element[17] = 4;
 685         varray_element[18] = 3;varray_element[19] = 0;varray_element[20] = 4;
 686         varray_element[21] = 1;varray_element[22] = 3;varray_element[23] = 4;
 687         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
 688         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
 689         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
 690         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
 691         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
 692         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
 693         varray_color[ 0] = 0.00f;varray_color[ 1] = 0.00f;varray_color[ 2] = 0.50f;varray_color[ 3] = ent->alpha;
 694         varray_color[ 4] = 0.00f;varray_color[ 5] = 0.00f;varray_color[ 6] = 0.50f;varray_color[ 7] = ent->alpha;
 695         varray_color[ 8] = 0.00f;varray_color[ 9] = 0.50f;varray_color[10] = 0.00f;varray_color[11] = ent->alpha;
 696         varray_color[12] = 0.00f;varray_color[13] = 0.50f;varray_color[14] = 0.00f;varray_color[15] = ent->alpha;
 697         varray_color[16] = 0.50f;varray_color[17] = 0.00f;varray_color[18] = 0.00f;varray_color[19] = ent->alpha;
 698         varray_color[20] = 0.50f;varray_color[21] = 0.00f;varray_color[22] = 0.00f;varray_color[23] = ent->alpha;
 699         if (fogenabled)
 700         {
 701                 VectorSubtract(ent->origin, r_origin, diff);
 702                 f2 = exp(fogdensity/DotProduct(diff, diff));
 703                 f1 = 1 - f2;
 704                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
 705                 {
 706                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * mesh_colorscale;
 707                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * mesh_colorscale;
 708                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * mesh_colorscale;
 709                 }
 710         }
 711         else
 712         {
 713                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
 714                 {
 715                         c[0] *= mesh_colorscale;
 716                         c[1] *= mesh_colorscale;
 717                         c[2] *= mesh_colorscale;
 718                 }
 719         }
 720         R_Mesh_Draw(6, 8);
 721 }
 722
 723 void R_DrawNoModel(entity_render_t *ent)
 724 {
 725         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
 726                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
 727         //else
 728         //      R_DrawNoModelCallback(ent, 0);
 729 }
 730