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 matrix4x4_t r_identitymatrix;
  30
  31 int c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
  32
  33 // true during envmap command capture
  34 qboolean envmap;
  35
  36 float r_farclip;
  37
  38 // view origin
  39 vec3_t r_origin;
  40 vec3_t vpn;
  41 vec3_t vright;
  42 vec3_t vup;
  43
  44 //
  45 // screen size info
  46 //
  47 refdef_t r_refdef;
  48
  49 // 8.8 fraction of base light value
  50 unsigned short d_lightstylevalue[256];
  51
  52 cvar_t r_drawentities = {0, "r_drawentities","1"};
  53 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
  54 cvar_t r_speeds = {0, "r_speeds","0"};
  55 cvar_t r_fullbright = {0, "r_fullbright","0"};
  56 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  57 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  58 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  59
  60 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
  61 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  62 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
  63 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
  64 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
  65 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
  66 cvar_t gl_fogend = {0, "gl_fogend","0"};
  67
  68 cvar_t r_textureunits = {0, "r_textureunits", "32"};
  69
  70 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
  71 {
  72         int i;
  73         for (i = 0;i < verts;i++)
  74         {
  75                 out[0] = in[0] * r;
  76                 out[1] = in[1] * g;
  77                 out[2] = in[2] * b;
  78                 out[3] = in[3];
  79                 in += 4;
  80                 out += 4;
  81         }
  82 }
  83
  84 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
  85 {
  86         int i;
  87         for (i = 0;i < verts;i++)
  88         {
  89                 out[0] = r;
  90                 out[1] = g;
  91                 out[2] = b;
  92                 out[3] = a;
  93                 out += 4;
  94         }
  95 }
  96
  97 /*
  98 ====================
  99 R_TimeRefresh_f
 100
 101 For program optimization
 102 ====================
 103 */
 104 qboolean intimerefresh = 0;
 105 static void R_TimeRefresh_f (void)
 106 {
 107         int i;
 108         float start, stop, time;
 109
 110         intimerefresh = 1;
 111         start = Sys_DoubleTime ();
 112         for (i = 0;i < 128;i++)
 113         {
 114                 r_refdef.viewangles[0] = 0;
 115                 r_refdef.viewangles[1] = i/128.0*360.0;
 116                 r_refdef.viewangles[2] = 0;
 117                 CL_UpdateScreen();
 118         }
 119
 120         stop = Sys_DoubleTime ();
 121         intimerefresh = 0;
 122         time = stop-start;
 123         Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
 124 }
 125
 126 vec3_t fogcolor;
 127 vec_t fogdensity;
 128 float fog_density, fog_red, fog_green, fog_blue;
 129 qboolean fogenabled;
 130 qboolean oldgl_fogenable;
 131 void R_SetupFog(void)
 132 {
 133         if (gamemode == GAME_NEHAHRA)
 134         {
 135                 if (gl_fogenable.integer)
 136                 {
 137                         oldgl_fogenable = true;
 138                         fog_density = gl_fogdensity.value;
 139                         fog_red = gl_fogred.value;
 140                         fog_green = gl_foggreen.value;
 141                         fog_blue = gl_fogblue.value;
 142                 }
 143                 else if (oldgl_fogenable)
 144                 {
 145                         oldgl_fogenable = false;
 146                         fog_density = 0;
 147                         fog_red = 0;
 148                         fog_green = 0;
 149                         fog_blue = 0;
 150                 }
 151         }
 152         if (fog_density)
 153         {
 154                 fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 155                 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 156                 fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 157         }
 158         if (fog_density)
 159         {
 160                 fogenabled = true;
 161                 fogdensity = -4000.0f / (fog_density * fog_density);
 162                 // fog color was already set
 163         }
 164         else
 165                 fogenabled = false;
 166 }
 167
 168 // FIXME: move this to client?
 169 void FOG_clear(void)
 170 {
 171         if (gamemode == GAME_NEHAHRA)
 172         {
 173                 Cvar_Set("gl_fogenable", "0");
 174                 Cvar_Set("gl_fogdensity", "0.2");
 175                 Cvar_Set("gl_fogred", "0.3");
 176                 Cvar_Set("gl_foggreen", "0.3");
 177                 Cvar_Set("gl_fogblue", "0.3");
 178         }
 179         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 180 }
 181
 182 // FIXME: move this to client?
 183 void FOG_registercvars(void)
 184 {
 185         if (gamemode == GAME_NEHAHRA)
 186         {
 187                 Cvar_RegisterVariable (&gl_fogenable);
 188                 Cvar_RegisterVariable (&gl_fogdensity);
 189                 Cvar_RegisterVariable (&gl_fogred);
 190                 Cvar_RegisterVariable (&gl_foggreen);
 191                 Cvar_RegisterVariable (&gl_fogblue);
 192                 Cvar_RegisterVariable (&gl_fogstart);
 193                 Cvar_RegisterVariable (&gl_fogend);
 194         }
 195 }
 196
 197 void gl_main_start(void)
 198 {
 199 }
 200
 201 void gl_main_shutdown(void)
 202 {
 203 }
 204
 205 extern void CL_ParseEntityLump(char *entitystring);
 206 void gl_main_newmap(void)
 207 {
 208         if (cl.worldmodel && cl.worldmodel->entities)
 209                 CL_ParseEntityLump(cl.worldmodel->entities);
 210         r_framecount = 1;
 211 }
 212
 213 void GL_Main_Init(void)
 214 {
 215         Matrix4x4_CreateIdentity(&r_identitymatrix);
 216 // FIXME: move this to client?
 217         FOG_registercvars();
 218         Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
 219         Cvar_RegisterVariable (&r_drawentities);
 220         Cvar_RegisterVariable (&r_drawviewmodel);
 221         Cvar_RegisterVariable (&r_speeds);
 222         Cvar_RegisterVariable (&r_fullbrights);
 223         Cvar_RegisterVariable (&r_wateralpha);
 224         Cvar_RegisterVariable (&r_dynamic);
 225         Cvar_RegisterVariable (&r_fullbright);
 226         Cvar_RegisterVariable (&r_textureunits);
 227         if (gamemode == GAME_NEHAHRA)
 228                 Cvar_SetValue("r_fullbrights", 0);
 229         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 230 }
 231
 232 vec3_t r_farclip_origin;
 233 vec3_t r_farclip_direction;
 234 vec_t r_farclip_directiondist;
 235 vec_t r_farclip_meshfarclip;
 236 int r_farclip_directionbit0;
 237 int r_farclip_directionbit1;
 238 int r_farclip_directionbit2;
 239
 240 // start a farclip measuring session
 241 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip)
 242 {
 243         VectorCopy(origin, r_farclip_origin);
 244         VectorCopy(direction, r_farclip_direction);
 245         r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
 246         r_farclip_directionbit0 = r_farclip_direction[0] < 0;
 247         r_farclip_directionbit1 = r_farclip_direction[1] < 0;
 248         r_farclip_directionbit2 = r_farclip_direction[2] < 0;
 249         r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
 250 }
 251
 252 // enlarge farclip to accomodate box
 253 void R_FarClip_Box(vec3_t mins, vec3_t maxs)
 254 {
 255         float d;
 256         d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
 257           + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
 258           + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
 259         if (r_farclip_meshfarclip < d)
 260                 r_farclip_meshfarclip = d;
 261 }
 262
 263 // return farclip value
 264 float R_FarClip_Finish(void)
 265 {
 266         return r_farclip_meshfarclip - r_farclip_directiondist;
 267 }
 268
 269 /*
 270 ===============
 271 R_NewMap
 272 ===============
 273 */
 274 void R_NewMap (void)
 275 {
 276         R_Modules_NewMap();
 277 }
 278
 279 extern void R_Textures_Init(void);
 280 extern void Mod_RenderInit(void);
 281 extern void GL_Draw_Init(void);
 282 extern void GL_Main_Init(void);
 283 extern void GL_Models_Init(void);
 284 extern void R_Sky_Init(void);
 285 extern void GL_Surf_Init(void);
 286 extern void R_Crosshairs_Init(void);
 287 extern void R_Light_Init(void);
 288 extern void R_Particles_Init(void);
 289 extern void R_Explosion_Init(void);
 290 extern void ui_init(void);
 291 extern void gl_backend_init(void);
 292
 293 void Render_Init(void)
 294 {
 295         R_Modules_Shutdown();
 296         R_Textures_Init();
 297         Mod_RenderInit();
 298         gl_backend_init();
 299         R_MeshQueue_Init();
 300         GL_Draw_Init();
 301         GL_Main_Init();
 302         GL_Models_Init();
 303         R_Sky_Init();
 304         GL_Surf_Init();
 305         R_Crosshairs_Init();
 306         R_Light_Init();
 307         R_Particles_Init();
 308         R_Explosion_Init();
 309         ui_init();
 310         R_Modules_Start();
 311 }
 312
 313 /*
 314 ===============
 315 GL_Init
 316 ===============
 317 */
 318 extern char *ENGINE_EXTENSIONS;
 319 void GL_Init (void)
 320 {
 321         VID_CheckExtensions();
 322
 323         // LordHavoc: report supported extensions
 324         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 325
 326         qglCullFace(GL_FRONT);
 327         qglEnable(GL_TEXTURE_2D);
 328 }
 329
 330
 331 //==================================================================================
 332
 333 static void R_MarkEntities (void)
 334 {
 335         int i;
 336         vec3_t v;
 337         entity_render_t *ent;
 338
 339         ent = &cl_entities[0].render;
 340         Matrix4x4_CreateIdentity(&ent->matrix);
 341         Matrix4x4_CreateIdentity(&ent->inversematrix);
 342
 343         if (cl.worldmodel)
 344                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 345
 346         if (!r_drawentities.integer)
 347                 return;
 348
 349         for (i = 0;i < r_refdef.numentities;i++)
 350         {
 351                 ent = r_refdef.entities[i];
 352                 Mod_CheckLoaded(ent->model);
 353
 354                 // move view-relative models to where they should be
 355                 if (ent->flags & RENDER_VIEWMODEL)
 356                 {
 357                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 358                         ent->flags -= RENDER_VIEWMODEL;
 359                         // transform origin
 360                         VectorCopy(ent->origin, v);
 361                         ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 362                         ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 363                         ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 364                         // adjust angles
 365                         VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
 366                 }
 367
 368                 if (R_CullBox(ent->mins, ent->maxs))
 369                         continue;
 370
 371                 ent->visframe = r_framecount;
 372                 VectorCopy(ent->angles, v);
 373                 if (!ent->model || ent->model->type != mod_brush)
 374                         v[0] = -v[0];
 375                 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
 376                 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 377                 R_LerpAnimation(ent);
 378                 R_UpdateEntLights(ent);
 379                 R_FarClip_Box(ent->mins, ent->maxs);
 380         }
 381 }
 382
 383 // only used if skyrendermasked, and normally returns false
 384 int R_DrawBrushModelsSky (void)
 385 {
 386         int i, sky;
 387         entity_render_t *ent;
 388
 389         if (!r_drawentities.integer)
 390                 return false;
 391
 392         sky = false;
 393         for (i = 0;i < r_refdef.numentities;i++)
 394         {
 395                 ent = r_refdef.entities[i];
 396                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 397                 {
 398                         ent->model->DrawSky(ent);
 399                         sky = true;
 400                 }
 401         }
 402         return sky;
 403 }
 404
 405 /*
 406 =============
 407 R_DrawViewModel
 408 =============
 409 */
 410 void R_DrawViewModel (void)
 411 {
 412         entity_render_t *ent;
 413
 414         // FIXME: move these checks to client
 415         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 416                 return;
 417
 418         ent = &cl.viewent.render;
 419         Mod_CheckLoaded(ent->model);
 420         R_LerpAnimation(ent);
 421         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 422         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 423         R_UpdateEntLights(ent);
 424         ent->model->Draw(ent);
 425 }
 426
 427 void R_DrawNoModel(entity_render_t *ent);
 428 void R_DrawModels (void)
 429 {
 430         int i;
 431         entity_render_t *ent;
 432
 433         if (!r_drawentities.integer)
 434                 return;
 435
 436         R_DrawViewModel();
 437         for (i = 0;i < r_refdef.numentities;i++)
 438         {
 439                 ent = r_refdef.entities[i];
 440                 if (ent->visframe == r_framecount)
 441                 {
 442                         if (ent->model)
 443                         {
 444                                 if (ent->model->Draw)
 445                                         ent->model->Draw(ent);
 446                         }
 447                         else
 448                                 R_DrawNoModel(ent);
 449                 }
 450         }
 451 }
 452
 453 static void R_SetFrustum (void)
 454 {
 455         int i;
 456
 457         // LordHavoc: note to all quake engine coders, the special case for 90
 458         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
 459         // disabled as well.
 460         // rotate VPN right by FOV_X/2 degrees
 461         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 462         // rotate VPN left by FOV_X/2 degrees
 463         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 464         // rotate VPN up by FOV_X/2 degrees
 465         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 466         // rotate VPN down by FOV_X/2 degrees
 467         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 468
 469         for (i = 0;i < 4;i++)
 470         {
 471                 frustum[i].type = PLANE_ANYZ;
 472                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 473                 PlaneClassify(&frustum[i]);
 474         }
 475 }
 476
 477 /*
 478 ===============
 479 R_SetupFrame
 480 ===============
 481 */
 482 static void R_SetupFrame (void)
 483 {
 484 // don't allow cheats in multiplayer
 485         if (cl.maxclients > 1)
 486         {
 487                 if (r_fullbright.integer != 0)
 488                         Cvar_Set ("r_fullbright", "0");
 489                 if (r_ambient.value != 0)
 490                         Cvar_Set ("r_ambient", "0");
 491         }
 492
 493         r_framecount++;
 494
 495 // build the transformation matrix for the given view angles
 496         VectorCopy (r_refdef.vieworg, r_origin);
 497
 498         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 499
 500         R_AnimateLight ();
 501 }
 502
 503
 504 static void R_BlendView(void)
 505 {
 506         rmeshstate_t m;
 507         float r;
 508
 509         if (r_refdef.viewblend[3] < 0.01f)
 510                 return;
 511
 512         memset(&m, 0, sizeof(m));
 513         m.blendfunc1 = GL_SRC_ALPHA;
 514         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 515         m.wantoverbright = false;
 516         m.depthdisable = true; // magic
 517         R_Mesh_Matrix(&r_identitymatrix);
 518         R_Mesh_State(&m);
 519
 520         varray_element[0] = 0;
 521         varray_element[1] = 1;
 522         varray_element[2] = 2;
 523         varray_color[0] = varray_color[4] = varray_color[8] = r_refdef.viewblend[0];
 524         varray_color[1] = varray_color[5] = varray_color[9] = r_refdef.viewblend[1];
 525         varray_color[2] = varray_color[6] = varray_color[10] = r_refdef.viewblend[2];
 526         varray_color[3] = varray_color[7] = varray_color[11] = r_refdef.viewblend[3];
 527         r = 64000;
 528         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
 529         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
 530         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
 531         r *= 3;
 532         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
 533         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
 534         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
 535         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
 536         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
 537         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
 538         R_Mesh_Draw(3, 1);
 539 }
 540
 541 /*
 542 ================
 543 R_RenderView
 544
 545 r_refdef must be set before the first call
 546 ================
 547 */
 548 void R_RenderView (void)
 549 {
 550         entity_render_t *world;
 551         if (!r_refdef.entities/* || !cl.worldmodel*/)
 552                 return; //Host_Error ("R_RenderView: NULL worldmodel");
 553
 554         world = &cl_entities[0].render;
 555
 556         // FIXME: move to client
 557         R_MoveExplosions();
 558         R_TimeReport("mexplosion");
 559
 560         R_Textures_Frame();
 561         R_SetupFrame();
 562         R_SetFrustum();
 563         R_SetupFog();
 564         R_SkyStartFrame();
 565         R_BuildLightList();
 566         R_TimeReport("setup");
 567
 568         R_FarClip_Start(r_origin, vpn, 768.0f);
 569         R_MarkEntities();
 570         r_farclip = R_FarClip_Finish() + 256.0f;
 571         R_TimeReport("markentity");
 572
 573         R_Mesh_Start(r_farclip);
 574         R_MeshQueue_BeginScene();
 575
 576         if (R_DrawBrushModelsSky())
 577                 R_TimeReport("bmodelsky");
 578
 579         // must occur early because it can draw sky
 580         R_DrawWorld(world);
 581         R_TimeReport("world");
 582
 583         // don't let sound skip if going slow
 584         if (!intimerefresh && !r_speeds.integer)
 585                 S_ExtraUpdate ();
 586
 587         R_DrawModels();
 588         R_TimeReport("models");
 589
 590         R_DrawParticles();
 591         R_TimeReport("particles");
 592
 593         R_DrawExplosions();
 594         R_TimeReport("explosions");
 595
 596         R_MeshQueue_RenderTransparent();
 597         R_TimeReport("drawtrans");
 598
 599         R_DrawCoronas();
 600         R_TimeReport("coronas");
 601
 602         R_DrawCrosshair();
 603         R_TimeReport("crosshair");
 604
 605         R_BlendView();
 606         R_TimeReport("blendview");
 607
 608         R_MeshQueue_Render();
 609         R_MeshQueue_EndScene();
 610         R_Mesh_Finish();
 611         R_TimeReport("meshfinish");
 612 }
 613
 614 /*
 615 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
 616 {
 617         int i;
 618         float *v, *c, f1, f2, diff[3];
 619         rmeshstate_t m;
 620         m.blendfunc1 = GL_SRC_ALPHA;
 621         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 622         m.wantoverbright = false;
 623         R_Mesh_Matrix(&r_identitymatrix);
 624         R_Mesh_State(&m);
 625
 626         varray_element
 627         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
 628         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
 629         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
 630         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
 631         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
 632         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
 633         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
 634         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
 635         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;
 636         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;
 637         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;
 638         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;
 639         if (fogenabled)
 640         {
 641                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
 642                 {
 643                         VectorSubtract(v, r_origin, diff);
 644                         f2 = exp(fogdensity/DotProduct(diff, diff));
 645                         f1 = 1 - f2;
 646                         f2 *= mesh_colorscale;
 647                         c[0] = c[0] * f1 + fogcolor[0] * f2;
 648                         c[1] = c[1] * f1 + fogcolor[1] * f2;
 649                         c[2] = c[2] * f1 + fogcolor[2] * f2;
 650                 }
 651         }
 652         R_Mesh_Draw(8, 12);
 653 }
 654 */
 655
 656 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
 657 {
 658         const entity_render_t *ent = calldata1;
 659         int i;
 660         float f1, f2, *c, diff[3];
 661         rmeshstate_t m;
 662         memset(&m, 0, sizeof(m));
 663         if (ent->flags & EF_ADDITIVE)
 664         {
 665                 m.blendfunc1 = GL_SRC_ALPHA;
 666                 m.blendfunc2 = GL_ONE;
 667         }
 668         else if (ent->alpha < 1)
 669         {
 670                 m.blendfunc1 = GL_SRC_ALPHA;
 671                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 672         }
 673         else
 674         {
 675                 m.blendfunc1 = GL_ONE;
 676                 m.blendfunc2 = GL_ZERO;
 677         }
 678         m.wantoverbright = false;
 679         R_Mesh_Matrix(&ent->matrix);
 680         R_Mesh_State(&m);
 681
 682         varray_element[ 0] = 5;varray_element[ 1] = 2;varray_element[ 2] = 0;
 683         varray_element[ 3] = 5;varray_element[ 4] = 1;varray_element[ 5] = 2;
 684         varray_element[ 6] = 5;varray_element[ 7] = 0;varray_element[ 8] = 3;
 685         varray_element[ 9] = 5;varray_element[10] = 3;varray_element[11] = 1;
 686         varray_element[12] = 0;varray_element[13] = 2;varray_element[14] = 4;
 687         varray_element[15] = 2;varray_element[16] = 1;varray_element[17] = 4;
 688         varray_element[18] = 3;varray_element[19] = 0;varray_element[20] = 4;
 689         varray_element[21] = 1;varray_element[22] = 3;varray_element[23] = 4;
 690         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
 691         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
 692         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
 693         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
 694         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
 695         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
 696         varray_color[ 0] = 0.00f;varray_color[ 1] = 0.00f;varray_color[ 2] = 0.50f;varray_color[ 3] = ent->alpha;
 697         varray_color[ 4] = 0.00f;varray_color[ 5] = 0.00f;varray_color[ 6] = 0.50f;varray_color[ 7] = ent->alpha;
 698         varray_color[ 8] = 0.00f;varray_color[ 9] = 0.50f;varray_color[10] = 0.00f;varray_color[11] = ent->alpha;
 699         varray_color[12] = 0.00f;varray_color[13] = 0.50f;varray_color[14] = 0.00f;varray_color[15] = ent->alpha;
 700         varray_color[16] = 0.50f;varray_color[17] = 0.00f;varray_color[18] = 0.00f;varray_color[19] = ent->alpha;
 701         varray_color[20] = 0.50f;varray_color[21] = 0.00f;varray_color[22] = 0.00f;varray_color[23] = ent->alpha;
 702         if (fogenabled)
 703         {
 704                 VectorSubtract(ent->origin, r_origin, diff);
 705                 f2 = exp(fogdensity/DotProduct(diff, diff));
 706                 f1 = 1 - f2;
 707                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
 708                 {
 709                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * mesh_colorscale;
 710                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * mesh_colorscale;
 711                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * mesh_colorscale;
 712                 }
 713         }
 714         else
 715         {
 716                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
 717                 {
 718                         c[0] *= mesh_colorscale;
 719                         c[1] *= mesh_colorscale;
 720                         c[2] *= mesh_colorscale;
 721                 }
 722         }
 723         R_Mesh_Draw(6, 8);
 724 }
 725
 726 void R_DrawNoModel(entity_render_t *ent)
 727 {
 728         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
 729                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
 730         //else
 731         //      R_DrawNoModelCallback(ent, 0);
 732 }
 733