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_shadows = {CVAR_SAVE, "r_shadows", "1"};
  55 cvar_t r_staticworldlights = {0, "r_staticworldlights", "0"};
  56 cvar_t r_speeds = {0, "r_speeds","0"};
  57 cvar_t r_fullbright = {0, "r_fullbright","0"};
  58 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  59 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  60 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  61
  62 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
  63 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  64 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
  65 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
  66 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
  67 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
  68 cvar_t gl_fogend = {0, "gl_fogend","0"};
  69
  70 cvar_t r_textureunits = {0, "r_textureunits", "32"};
  71
  72 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
  73 {
  74         int i;
  75         for (i = 0;i < verts;i++)
  76         {
  77                 out[0] = in[0] * r;
  78                 out[1] = in[1] * g;
  79                 out[2] = in[2] * b;
  80                 out[3] = in[3];
  81                 in += 4;
  82                 out += 4;
  83         }
  84 }
  85
  86 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
  87 {
  88         int i;
  89         for (i = 0;i < verts;i++)
  90         {
  91                 out[0] = r;
  92                 out[1] = g;
  93                 out[2] = b;
  94                 out[3] = a;
  95                 out += 4;
  96         }
  97 }
  98
  99 /*
 100 ====================
 101 R_TimeRefresh_f
 102
 103 For program optimization
 104 ====================
 105 */
 106 qboolean intimerefresh = 0;
 107 static void R_TimeRefresh_f (void)
 108 {
 109         int i;
 110         float start, stop, time;
 111
 112         intimerefresh = 1;
 113         start = Sys_DoubleTime ();
 114         for (i = 0;i < 128;i++)
 115         {
 116                 r_refdef.viewangles[0] = 0;
 117                 r_refdef.viewangles[1] = i/128.0*360.0;
 118                 r_refdef.viewangles[2] = 0;
 119                 CL_UpdateScreen();
 120         }
 121
 122         stop = Sys_DoubleTime ();
 123         intimerefresh = 0;
 124         time = stop-start;
 125         Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
 126 }
 127
 128 vec3_t fogcolor;
 129 vec_t fogdensity;
 130 float fog_density, fog_red, fog_green, fog_blue;
 131 qboolean fogenabled;
 132 qboolean oldgl_fogenable;
 133 void R_SetupFog(void)
 134 {
 135         if (gamemode == GAME_NEHAHRA)
 136         {
 137                 if (gl_fogenable.integer)
 138                 {
 139                         oldgl_fogenable = true;
 140                         fog_density = gl_fogdensity.value;
 141                         fog_red = gl_fogred.value;
 142                         fog_green = gl_foggreen.value;
 143                         fog_blue = gl_fogblue.value;
 144                 }
 145                 else if (oldgl_fogenable)
 146                 {
 147                         oldgl_fogenable = false;
 148                         fog_density = 0;
 149                         fog_red = 0;
 150                         fog_green = 0;
 151                         fog_blue = 0;
 152                 }
 153         }
 154         if (fog_density)
 155         {
 156                 fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 157                 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 158                 fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 159         }
 160         if (fog_density)
 161         {
 162                 fogenabled = true;
 163                 fogdensity = -4000.0f / (fog_density * fog_density);
 164                 // fog color was already set
 165         }
 166         else
 167                 fogenabled = false;
 168 }
 169
 170 // FIXME: move this to client?
 171 void FOG_clear(void)
 172 {
 173         if (gamemode == GAME_NEHAHRA)
 174         {
 175                 Cvar_Set("gl_fogenable", "0");
 176                 Cvar_Set("gl_fogdensity", "0.2");
 177                 Cvar_Set("gl_fogred", "0.3");
 178                 Cvar_Set("gl_foggreen", "0.3");
 179                 Cvar_Set("gl_fogblue", "0.3");
 180         }
 181         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 182 }
 183
 184 // FIXME: move this to client?
 185 void FOG_registercvars(void)
 186 {
 187         if (gamemode == GAME_NEHAHRA)
 188         {
 189                 Cvar_RegisterVariable (&gl_fogenable);
 190                 Cvar_RegisterVariable (&gl_fogdensity);
 191                 Cvar_RegisterVariable (&gl_fogred);
 192                 Cvar_RegisterVariable (&gl_foggreen);
 193                 Cvar_RegisterVariable (&gl_fogblue);
 194                 Cvar_RegisterVariable (&gl_fogstart);
 195                 Cvar_RegisterVariable (&gl_fogend);
 196         }
 197 }
 198
 199 void gl_main_start(void)
 200 {
 201 }
 202
 203 void gl_main_shutdown(void)
 204 {
 205 }
 206
 207 extern void CL_ParseEntityLump(char *entitystring);
 208 void gl_main_newmap(void)
 209 {
 210         if (cl.worldmodel && cl.worldmodel->entities)
 211                 CL_ParseEntityLump(cl.worldmodel->entities);
 212         r_framecount = 1;
 213 }
 214
 215 void GL_Main_Init(void)
 216 {
 217         Matrix4x4_CreateIdentity(&r_identitymatrix);
 218 // FIXME: move this to client?
 219         FOG_registercvars();
 220         Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
 221         Cvar_RegisterVariable (&r_drawentities);
 222         Cvar_RegisterVariable (&r_drawviewmodel);
 223         Cvar_RegisterVariable (&r_shadows);
 224         Cvar_RegisterVariable (&r_staticworldlights);
 225         Cvar_RegisterVariable (&r_speeds);
 226         Cvar_RegisterVariable (&r_fullbrights);
 227         Cvar_RegisterVariable (&r_wateralpha);
 228         Cvar_RegisterVariable (&r_dynamic);
 229         Cvar_RegisterVariable (&r_fullbright);
 230         Cvar_RegisterVariable (&r_textureunits);
 231         if (gamemode == GAME_NEHAHRA)
 232                 Cvar_SetValue("r_fullbrights", 0);
 233         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 234 }
 235
 236 vec3_t r_farclip_origin;
 237 vec3_t r_farclip_direction;
 238 vec_t r_farclip_directiondist;
 239 vec_t r_farclip_meshfarclip;
 240 int r_farclip_directionbit0;
 241 int r_farclip_directionbit1;
 242 int r_farclip_directionbit2;
 243
 244 // start a farclip measuring session
 245 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip)
 246 {
 247         VectorCopy(origin, r_farclip_origin);
 248         VectorCopy(direction, r_farclip_direction);
 249         r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
 250         r_farclip_directionbit0 = r_farclip_direction[0] < 0;
 251         r_farclip_directionbit1 = r_farclip_direction[1] < 0;
 252         r_farclip_directionbit2 = r_farclip_direction[2] < 0;
 253         r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
 254 }
 255
 256 // enlarge farclip to accomodate box
 257 void R_FarClip_Box(vec3_t mins, vec3_t maxs)
 258 {
 259         float d;
 260         d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
 261           + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
 262           + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
 263         if (r_farclip_meshfarclip < d)
 264                 r_farclip_meshfarclip = d;
 265 }
 266
 267 // return farclip value
 268 float R_FarClip_Finish(void)
 269 {
 270         return r_farclip_meshfarclip - r_farclip_directiondist;
 271 }
 272
 273 /*
 274 ===============
 275 R_NewMap
 276 ===============
 277 */
 278 void R_NewMap (void)
 279 {
 280         R_Modules_NewMap();
 281 }
 282
 283 extern void R_Textures_Init(void);
 284 extern void Mod_RenderInit(void);
 285 extern void GL_Draw_Init(void);
 286 extern void GL_Main_Init(void);
 287 extern void R_Shadow_Init(void);
 288 extern void GL_Models_Init(void);
 289 extern void R_Sky_Init(void);
 290 extern void GL_Surf_Init(void);
 291 extern void R_Crosshairs_Init(void);
 292 extern void R_Light_Init(void);
 293 extern void R_Particles_Init(void);
 294 extern void R_Explosion_Init(void);
 295 extern void ui_init(void);
 296 extern void gl_backend_init(void);
 297 extern void Sbar_Init(void);
 298
 299 void Render_Init(void)
 300 {
 301         R_Textures_Init();
 302         Mod_RenderInit();
 303         gl_backend_init();
 304         R_MeshQueue_Init();
 305         GL_Draw_Init();
 306         GL_Main_Init();
 307         R_Shadow_Init();
 308         GL_Models_Init();
 309         R_Sky_Init();
 310         GL_Surf_Init();
 311         R_Crosshairs_Init();
 312         R_Light_Init();
 313         R_Particles_Init();
 314         R_Explosion_Init();
 315         ui_init();
 316         Sbar_Init();
 317 }
 318
 319 /*
 320 ===============
 321 GL_Init
 322 ===============
 323 */
 324 extern char *ENGINE_EXTENSIONS;
 325 void GL_Init (void)
 326 {
 327         VID_CheckExtensions();
 328
 329         // LordHavoc: report supported extensions
 330         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 331 }
 332
 333 int R_CullBox(const vec3_t mins, const vec3_t maxs)
 334 {
 335         int i;
 336         mplane_t *p;
 337         for (i = 0;i < 4;i++)
 338         {
 339                 p = frustum + i;
 340                 switch(p->signbits)
 341                 {
 342                 default:
 343                 case 0:
 344                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
 345                                 return true;
 346                         break;
 347                 case 1:
 348                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*maxs[2] < p->dist)
 349                                 return true;
 350                         break;
 351                 case 2:
 352                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
 353                                 return true;
 354                         break;
 355                 case 3:
 356                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*maxs[2] < p->dist)
 357                                 return true;
 358                         break;
 359                 case 4:
 360                         if (p->normal[0]*maxs[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
 361                                 return true;
 362                         break;
 363                 case 5:
 364                         if (p->normal[0]*mins[0] + p->normal[1]*maxs[1] + p->normal[2]*mins[2] < p->dist)
 365                                 return true;
 366                         break;
 367                 case 6:
 368                         if (p->normal[0]*maxs[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
 369                                 return true;
 370                         break;
 371                 case 7:
 372                         if (p->normal[0]*mins[0] + p->normal[1]*mins[1] + p->normal[2]*mins[2] < p->dist)
 373                                 return true;
 374                         break;
 375                 }
 376         }
 377         return false;
 378 }
 379
 380 int PVS_CullBox(const vec3_t mins, const vec3_t maxs)
 381 {
 382         int stackpos, sides;
 383         mnode_t *node, *stack[4096];
 384         stackpos = 0;
 385         stack[stackpos++] = cl.worldmodel->nodes;
 386         while (stackpos)
 387         {
 388                 node = stack[--stackpos];
 389                 if (node->contents < 0)
 390                 {
 391                         if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
 392                                 return false;
 393                 }
 394                 else
 395                 {
 396                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 397                         if (sides & 2 && stackpos < 4096)
 398                                 stack[stackpos++] = node->children[1];
 399                         if (sides & 1 && stackpos < 4096)
 400                                 stack[stackpos++] = node->children[0];
 401                 }
 402         }
 403         return true;
 404 }
 405
 406 int R_CullSphere(const vec3_t origin, vec_t radius)
 407 {
 408         return (DotProduct(frustum[0].normal, origin) + radius < frustum[0].dist
 409              || DotProduct(frustum[1].normal, origin) + radius < frustum[1].dist
 410              || DotProduct(frustum[2].normal, origin) + radius < frustum[2].dist
 411              || DotProduct(frustum[3].normal, origin) + radius < frustum[3].dist);
 412 }
 413
 414 int PVS_CullSphere(const vec3_t origin, vec_t radius)
 415 {
 416         int stackpos;
 417         mnode_t *node, *stack[4096];
 418         float dist;
 419         stackpos = 0;
 420         stack[stackpos++] = cl.worldmodel->nodes;
 421         while (stackpos)
 422         {
 423                 node = stack[--stackpos];
 424                 if (node->contents < 0)
 425                 {
 426                         if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
 427                                 return false;
 428                 }
 429                 else
 430                 {
 431                         dist = PlaneDiff(origin, node->plane);
 432                         if (dist <= radius)
 433                                 stack[stackpos++] = node->children[1];
 434                         if (dist >= -radius)
 435                                 stack[stackpos++] = node->children[0];
 436                 }
 437         }
 438         return true;
 439 }
 440
 441
 442 //==================================================================================
 443
 444 static void R_MarkEntities (void)
 445 {
 446         int i;
 447         vec3_t v;
 448         entity_render_t *ent;
 449
 450         ent = &cl_entities[0].render;
 451         Matrix4x4_CreateIdentity(&ent->matrix);
 452         Matrix4x4_CreateIdentity(&ent->inversematrix);
 453
 454         if (cl.worldmodel)
 455                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 456
 457         if (!r_drawentities.integer)
 458                 return;
 459
 460         for (i = 0;i < r_refdef.numentities;i++)
 461         {
 462                 ent = r_refdef.entities[i];
 463                 Mod_CheckLoaded(ent->model);
 464
 465                 // move view-relative models to where they should be
 466                 if (ent->flags & RENDER_VIEWMODEL)
 467                 {
 468                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 469                         ent->flags -= RENDER_VIEWMODEL;
 470                         // transform origin
 471                         VectorCopy(ent->origin, v);
 472                         ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 473                         ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 474                         ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 475                         // adjust angles
 476                         VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
 477                 }
 478
 479                 VectorCopy(ent->angles, v);
 480                 if (!ent->model || ent->model->type != mod_brush)
 481                         v[0] = -v[0];
 482                 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
 483                 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 484                 R_LerpAnimation(ent);
 485                 R_UpdateEntLights(ent);
 486                 if (!R_CullSphere(ent->origin, ent->model->radius * ent->scale)
 487                  && !PVS_CullSphere(ent->origin, ent->model->radius * ent->scale)
 488                  && !R_CullBox(ent->mins, ent->maxs)
 489                  && !PVS_CullBox(ent->mins, ent->maxs))
 490                 {
 491                         ent->visframe = r_framecount;
 492                         R_FarClip_Box(ent->mins, ent->maxs);
 493                 }
 494         }
 495 }
 496
 497 // only used if skyrendermasked, and normally returns false
 498 int R_DrawBrushModelsSky (void)
 499 {
 500         int i, sky;
 501         entity_render_t *ent;
 502
 503         if (!r_drawentities.integer)
 504                 return false;
 505
 506         sky = false;
 507         for (i = 0;i < r_refdef.numentities;i++)
 508         {
 509                 ent = r_refdef.entities[i];
 510                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 511                 {
 512                         ent->model->DrawSky(ent);
 513                         sky = true;
 514                 }
 515         }
 516         return sky;
 517 }
 518
 519 /*
 520 =============
 521 R_DrawViewModel
 522 =============
 523 */
 524 void R_DrawViewModel (void)
 525 {
 526         entity_render_t *ent;
 527
 528         // FIXME: move these checks to client
 529         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 530                 return;
 531
 532         ent = &cl.viewent.render;
 533         Mod_CheckLoaded(ent->model);
 534         R_LerpAnimation(ent);
 535         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 536         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 537         R_UpdateEntLights(ent);
 538         ent->model->Draw(ent);
 539 }
 540
 541 void R_DrawNoModel(entity_render_t *ent);
 542 void R_DrawModels ()
 543 {
 544         int i;
 545         entity_render_t *ent;
 546
 547         if (!r_drawentities.integer)
 548                 return;
 549
 550         R_DrawViewModel();
 551         for (i = 0;i < r_refdef.numentities;i++)
 552         {
 553                 ent = r_refdef.entities[i];
 554                 if (ent->visframe == r_framecount)
 555                 {
 556                         if (ent->model && ent->model->Draw != NULL)
 557                                 ent->model->Draw(ent);
 558                         else
 559                                 R_DrawNoModel(ent);
 560                 }
 561         }
 562 }
 563
 564 void R_DrawFakeShadows (void)
 565 {
 566         int i;
 567         entity_render_t *ent;
 568
 569         ent = &cl_entities[0].render;
 570         if (ent->model && ent->model->DrawFakeShadow)
 571                 ent->model->DrawFakeShadow(ent);
 572
 573         if (!r_drawentities.integer)
 574                 return;
 575         for (i = 0;i < r_refdef.numentities;i++)
 576         {
 577                 ent = r_refdef.entities[i];
 578                 if (ent->model && ent->model->DrawFakeShadow)
 579                         ent->model->DrawFakeShadow(ent);
 580         }
 581 }
 582
 583 #include "r_shadow.h"
 584
 585 void R_TestAndDrawShadowVolume(entity_render_t *ent, vec3_t lightorigin, float lightradius)
 586 {
 587         int i;
 588         vec3_t p, p2, temp, relativelightorigin;
 589         float dist, projectdistance;
 590         // rough checks
 591         if (ent->model && ent->model->DrawShadowVolume)
 592         {
 593                 temp[0] = bound(ent->mins[0], lightorigin[0], ent->maxs[0]) - lightorigin[0];
 594                 temp[1] = bound(ent->mins[1], lightorigin[1], ent->maxs[1]) - lightorigin[1];
 595                 temp[2] = bound(ent->mins[2], lightorigin[2], ent->maxs[2]) - lightorigin[2];
 596                 dist = DotProduct(temp, temp);
 597                 if (dist < lightradius * lightradius)
 598                 {
 599                         projectdistance = lightradius - sqrt(dist);
 600                         {
 601 #if 0
 602                         int d0, d1, d2, d3;
 603                         // calculate projected bounding box and decide if it is on-screen
 604                         d0 = false;
 605                         d1 = false;
 606                         d2 = false;
 607                         d3 = false;
 608                         for (i = 0;i < 8;i++)
 609                         {
 610                                 p[0] = i & 1 ? ent->maxs[0] : ent->mins[0];
 611                                 p[1] = i & 2 ? ent->maxs[1] : ent->mins[1];
 612                                 p[2] = i & 4 ? ent->maxs[2] : ent->mins[2];
 613                                 VectorSubtract(p, lightorigin, temp);
 614                                 dist = projectdistance / sqrt(DotProduct(temp, temp));
 615                                 VectorMA(p, dist, temp, p2);
 616                                 if (!d0 && (DotProduct(p , frustum[0].normal) < frustum[0].dist || DotProduct(p2, frustum[0].normal) < frustum[0].dist))
 617                                         d0 = true;
 618                                 if (!d1 && (DotProduct(p , frustum[1].normal) < frustum[1].dist || DotProduct(p2, frustum[1].normal) < frustum[1].dist))
 619                                         d1 = true;
 620                                 if (!d2 && (DotProduct(p , frustum[2].normal) < frustum[2].dist || DotProduct(p2, frustum[2].normal) < frustum[2].dist))
 621                                         d2 = true;
 622                                 if (!d3 && (DotProduct(p , frustum[3].normal) < frustum[3].dist || DotProduct(p2, frustum[3].normal) < frustum[3].dist))
 623                                         d3 = true;
 624                         }
 625                         if (d0 && d1 && d2 && d3)
 626 #else
 627                         vec3_t mins, maxs;
 628                         // calculate projected bounding box and decide if it is on-screen
 629                         VectorCopy(ent->mins, mins);
 630                         VectorCopy(ent->maxs, maxs);
 631                         for (i = 0;i < 8;i++)
 632                         {
 633                                 p[0] = i & 1 ? ent->maxs[0] : ent->mins[0];
 634                                 p[1] = i & 2 ? ent->maxs[1] : ent->mins[1];
 635                                 p[2] = i & 4 ? ent->maxs[2] : ent->mins[2];
 636                                 VectorSubtract(p, lightorigin, temp);
 637                                 dist = projectdistance / sqrt(DotProduct(temp, temp));
 638                                 VectorMA(p, dist, temp, p2);
 639                                 if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
 640                                 if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
 641                                 if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
 642                         }
 643                         if (!R_CullBox(mins, maxs))
 644 #endif
 645                         {
 646                                 Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
 647                                 ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius);
 648                         }
 649                         }
 650                 }
 651         }
 652 }
 653
 654 void R_DrawWorldLightShadowVolume(mlight_t *sl)
 655 {
 656         shadowmesh_t *mesh;
 657         R_Mesh_Matrix(&cl_entities[0].render.matrix);
 658         for (mesh = sl->shadowvolume;mesh;mesh = mesh->next)
 659         {
 660                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 661                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 662         }
 663 }
 664
 665 #define SHADOWSPHERE_SEGMENTS 16
 666
 667 shadowmesh_t *shadowsphere;
 668 void R_CreateShadowSphere(void)
 669 {
 670         int i, j;
 671         vec3_t angles, angles2, angles3, angles4;
 672         float verts[12];
 673         shadowsphere = Mod_ShadowMesh_Begin(zonemempool);
 674         for (i = 0;i < SHADOWSPHERE_SEGMENTS / 2;i++)
 675         {
 676                 for (j = 0;j < SHADOWSPHERE_SEGMENTS;j++)
 677                 {
 678                         angles[0] = (i * 360.0f / SHADOWSPHERE_SEGMENTS) + 90.0f;
 679                         angles[1] = j * 360.0f / SHADOWSPHERE_SEGMENTS;
 680                         angles[2] = 0;
 681                         VectorCopy(angles, angles2);
 682                         VectorCopy(angles, angles3);
 683                         VectorCopy(angles, angles4);
 684                         angles2[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 685                         angles3[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 686                         angles3[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 687                         angles4[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 688                         AngleVectorsFLU(angles, verts, NULL, NULL);
 689                         AngleVectorsFLU(angles2, verts + 9, NULL, NULL);
 690                         AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
 691                         AngleVectorsFLU(angles4, verts + 3, NULL, NULL);
 692                         VectorScale(&verts[0], 1.0f, &verts[0]);
 693                         VectorScale(&verts[3], 1.0f, &verts[3]);
 694                         VectorScale(&verts[6], 1.0f, &verts[6]);
 695                         VectorScale(&verts[9], 1.0f, &verts[9]);
 696                         Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
 697                 }
 698         }
 699         shadowsphere = Mod_ShadowMesh_Finish(zonemempool, shadowsphere);
 700 }
 701
 702
 703 void R_DrawShadowSphere(vec3_t origin, float cullradius, float lightradius)
 704 {
 705         shadowmesh_t *mesh;
 706         matrix4x4_t matrix;
 707         if (!shadowsphere)
 708                 R_CreateShadowSphere();
 709         Matrix4x4_CreateScale(&matrix, lightradius);
 710         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 711         R_Mesh_Matrix(&matrix);
 712         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 713         {
 714                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 715                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 716         }
 717         Matrix4x4_CreateScale(&matrix, -cullradius);
 718         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 719         R_Mesh_Matrix(&matrix);
 720         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 721         {
 722                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 723                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 724         }
 725 }
 726
 727 void R_ShadowVolumeLighting (int visiblevolumes)
 728 {
 729         int i;
 730         entity_render_t *ent;
 731         int lnum;
 732         float f, lightradius, cullradius;
 733         vec3_t relativelightorigin, relativeeyeorigin, lightcolor;
 734         mlight_t *sl;
 735         rdlight_t *rd;
 736         rmeshstate_t m;
 737
 738         if (visiblevolumes)
 739         {
 740                 memset(&m, 0, sizeof(m));
 741                 m.blendfunc1 = GL_ONE;
 742                 m.blendfunc2 = GL_ONE;
 743                 R_Mesh_State(&m);
 744                 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
 745         }
 746         else
 747                 R_Shadow_Stage_Begin();
 748         for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
 749         {
 750                 if (d_lightstylevalue[sl->style] <= 0)
 751                         continue;
 752                 if (r_light_debuglight.integer >= 0 && lnum != r_light_debuglight.integer)
 753                         continue;
 754                 cullradius = sl->cullradius;
 755                 lightradius = sl->lightradius;
 756                 if (R_CullBox(sl->mins, sl->maxs) || PVS_CullBox(sl->mins, sl->maxs) || R_CullSphere(sl->origin, cullradius) || PVS_CullSphere(sl->origin, cullradius))
 757                         continue;
 758
 759                 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
 760                 VectorScale(sl->light, f, lightcolor);
 761
 762                 if (!visiblevolumes)
 763                         R_Shadow_Stage_ShadowVolumes();
 764                 R_DrawShadowSphere(sl->origin, cullradius, lightradius * 2);
 765                 if (sl->shadowvolume && r_staticworldlights.integer)
 766                         R_DrawWorldLightShadowVolume(sl);
 767                 else
 768                         R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius);
 769                 if (r_drawentities.integer)
 770                 {
 771                         for (i = 0;i < r_refdef.numentities;i++)
 772                         {
 773                                 ent = r_refdef.entities[i];
 774                                 if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
 775                                  && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
 776                                  && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2])
 777                                         R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius);
 778                         }
 779                 }
 780
 781                 if (!visiblevolumes)
 782                 {
 783                         R_Shadow_Stage_Light();
 784                         ent = &cl_entities[0].render;
 785                         if (ent->model && ent->model->DrawLight)
 786                         {
 787                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
 788                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 789                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
 790                         }
 791                         if (r_drawentities.integer)
 792                         {
 793                                 for (i = 0;i < r_refdef.numentities;i++)
 794                                 {
 795                                         ent = r_refdef.entities[i];
 796                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
 797                                          && ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
 798                                          && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
 799                                          && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2])
 800                                         {
 801                                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
 802                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 803                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
 804                                         }
 805                                 }
 806                         }
 807
 808                         R_Shadow_Stage_EraseShadowVolumes();
 809                         R_DrawShadowSphere(sl->origin, cullradius, lightradius * 2);
 810                         if (sl->shadowvolume && r_staticworldlights.integer)
 811                                 R_DrawWorldLightShadowVolume(sl);
 812                         else
 813                                 R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius);
 814                         if (r_drawentities.integer)
 815                         {
 816                                 for (i = 0;i < r_refdef.numentities;i++)
 817                                 {
 818                                         ent = r_refdef.entities[i];
 819                                         if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
 820                                          && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
 821                                          && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2])
 822                                                 R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius);
 823                                 }
 824                         }
 825                 }
 826         }
 827         for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
 828         {
 829                 cullradius = rd->cullradius;
 830                 lightradius = rd->cullradius;
 831                 if (R_CullSphere(rd->origin, cullradius) || PVS_CullSphere(rd->origin, cullradius))
 832                         continue;
 833
 834                 VectorScale(rd->light, 4.0f, lightcolor);
 835
 836                 if (!visiblevolumes)
 837                         R_Shadow_Stage_ShadowVolumes();
 838                 R_TestAndDrawShadowVolume(&cl_entities[0].render, rd->origin, cullradius);
 839                 if (r_drawentities.integer)
 840                 {
 841                         for (i = 0;i < r_refdef.numentities;i++)
 842                         {
 843                                 ent = r_refdef.entities[i];
 844                                 if (ent != rd->ent)
 845                                         R_TestAndDrawShadowVolume(ent, rd->origin, cullradius);
 846                         }
 847                 }
 848
 849                 if (!visiblevolumes)
 850                 {
 851                         R_Shadow_Stage_Light();
 852                         ent = &cl_entities[0].render;
 853                         if (ent->model && ent->model->DrawLight)
 854                         {
 855                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
 856                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 857                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, cullradius, LIGHTOFFSET, rd->subtract, lightcolor);
 858                         }
 859                         if (r_drawentities.integer)
 860                         {
 861                                 for (i = 0;i < r_refdef.numentities;i++)
 862                                 {
 863                                         ent = r_refdef.entities[i];
 864                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight)
 865                                         {
 866                                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
 867                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 868                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, cullradius, LIGHTOFFSET, rd->subtract, lightcolor);
 869                                         }
 870                                 }
 871                         }
 872
 873                         R_Shadow_Stage_EraseShadowVolumes();
 874                         R_TestAndDrawShadowVolume(&cl_entities[0].render, rd->origin, cullradius);
 875                         if (r_drawentities.integer)
 876                         {
 877                                 for (i = 0;i < r_refdef.numentities;i++)
 878                                 {
 879                                         ent = r_refdef.entities[i];
 880                                         if (ent != rd->ent)
 881                                                 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius);
 882                                 }
 883                         }
 884                 }
 885         }
 886
 887         if (!visiblevolumes)
 888                 R_Shadow_Stage_End();
 889 }
 890
 891 static void R_SetFrustum (void)
 892 {
 893         int i;
 894
 895         // LordHavoc: note to all quake engine coders, the special case for 90
 896         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
 897         // disabled as well.
 898         // rotate VPN right by FOV_X/2 degrees
 899         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 900         // rotate VPN left by FOV_X/2 degrees
 901         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 902         // rotate VPN up by FOV_X/2 degrees
 903         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 904         // rotate VPN down by FOV_X/2 degrees
 905         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 906
 907         for (i = 0;i < 4;i++)
 908         {
 909                 frustum[i].type = PLANE_ANYZ;
 910                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 911                 PlaneClassify(&frustum[i]);
 912         }
 913 }
 914
 915 /*
 916 ===============
 917 R_SetupFrame
 918 ===============
 919 */
 920 static void R_SetupFrame (void)
 921 {
 922 // don't allow cheats in multiplayer
 923         if (cl.maxclients > 1)
 924         {
 925                 if (r_fullbright.integer != 0)
 926                         Cvar_Set ("r_fullbright", "0");
 927                 if (r_ambient.value != 0)
 928                         Cvar_Set ("r_ambient", "0");
 929         }
 930
 931         r_framecount++;
 932
 933 // build the transformation matrix for the given view angles
 934         VectorCopy (r_refdef.vieworg, r_origin);
 935
 936         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 937
 938         R_AnimateLight ();
 939 }
 940
 941
 942 static void R_BlendView(void)
 943 {
 944         rmeshstate_t m;
 945         float r;
 946
 947         if (r_refdef.viewblend[3] < 0.01f)
 948                 return;
 949
 950         memset(&m, 0, sizeof(m));
 951         m.blendfunc1 = GL_SRC_ALPHA;
 952         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 953         m.depthdisable = true; // magic
 954         R_Mesh_Matrix(&r_identitymatrix);
 955         R_Mesh_State(&m);
 956
 957         r = 64000;
 958         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
 959         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
 960         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
 961         r *= 3;
 962         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
 963         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
 964         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
 965         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
 966         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
 967         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
 968         GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
 969         R_Mesh_Draw(3, 1, polygonelements);
 970 }
 971
 972 /*
 973 ================
 974 R_RenderView
 975
 976 r_refdef must be set before the first call
 977 ================
 978 */
 979 void R_RenderView (void)
 980 {
 981         entity_render_t *world;
 982         if (!r_refdef.entities/* || !cl.worldmodel*/)
 983                 return; //Host_Error ("R_RenderView: NULL worldmodel");
 984
 985         world = &cl_entities[0].render;
 986
 987         // FIXME: move to client
 988         R_MoveExplosions();
 989         R_TimeReport("mexplosion");
 990
 991         R_Textures_Frame();
 992         R_SetupFrame();
 993         R_SetFrustum();
 994         R_SetupFog();
 995         R_SkyStartFrame();
 996         R_BuildLightList();
 997         R_TimeReport("setup");
 998
 999         R_FarClip_Start(r_origin, vpn, 768.0f);
1000         R_MarkEntities();
1001         r_farclip = R_FarClip_Finish() + 16384.0f;//256.0f;
1002         R_TimeReport("markentity");
1003
1004         GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1005         //GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1006         GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1007         GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1008         qglDepthFunc(GL_LEQUAL);
1009
1010         R_Mesh_Start();
1011         R_MeshQueue_BeginScene();
1012
1013         if (r_shadows.integer == 3)
1014         {
1015                 if (!gl_texturecubemap)
1016                 {
1017                         Con_Printf("Cubemap texture support not detected, turning off r_shadows 3\n");
1018                         Cvar_SetValueQuick(&r_shadows, 0);
1019                 }
1020                 else if (!gl_dot3arb)
1021                 {
1022                         Con_Printf("Bumpmapping support not detected, turning off r_shadows 3\n");
1023                         Cvar_SetValueQuick(&r_shadows, 0);
1024                 }
1025                 else if (!gl_stencil)
1026                 {
1027                         Con_Printf("Stencil not enabled, turning off r_shadows 3, please type vid_stencil 1;vid_restart and try again\n");
1028                         Cvar_SetValueQuick(&r_shadows, 0);
1029                 }
1030                 else if (!gl_combine.integer)
1031                 {
1032                         Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadows 3\n");
1033                         Cvar_SetValueQuick(&r_shadows, 0);
1034                 }
1035         }
1036
1037         if (R_DrawBrushModelsSky())
1038                 R_TimeReport("bmodelsky");
1039
1040         // must occur early because it can draw sky
1041         R_DrawWorld(world);
1042         R_TimeReport("world");
1043
1044         // don't let sound skip if going slow
1045         if (!intimerefresh && !r_speeds.integer)
1046                 S_ExtraUpdate ();
1047
1048         R_DrawModels(r_shadows.integer == 3);
1049         R_TimeReport("models");
1050
1051         if (r_shadows.integer == 1)
1052         {
1053                 R_DrawFakeShadows();
1054                 R_TimeReport("fakeshadow");
1055         }
1056
1057         if (r_shadows.integer == 3)
1058         {
1059                 R_ShadowVolumeLighting(false);
1060                 R_TimeReport("dynlight");
1061         }
1062
1063         R_DrawParticles();
1064         R_TimeReport("particles");
1065
1066         R_DrawExplosions();
1067         R_TimeReport("explosions");
1068
1069         R_MeshQueue_RenderTransparent();
1070         R_TimeReport("drawtrans");
1071
1072         R_DrawCoronas();
1073         R_TimeReport("coronas");
1074
1075         R_DrawWorldCrosshair();
1076         R_TimeReport("crosshair");
1077
1078         R_BlendView();
1079         R_TimeReport("blendview");
1080
1081         R_MeshQueue_Render();
1082         R_MeshQueue_EndScene();
1083         if (r_shadows.integer == 2)
1084         {
1085                 R_ShadowVolumeLighting(true);
1086                 R_TimeReport("shadowvolume");
1087         }
1088         R_Mesh_Finish();
1089         R_TimeReport("meshfinish");
1090 }
1091
1092 /*
1093 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1094 {
1095         int i;
1096         float *v, *c, f1, f2, diff[3];
1097         rmeshstate_t m;
1098         m.blendfunc1 = GL_SRC_ALPHA;
1099         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1100         R_Mesh_Matrix(&r_identitymatrix);
1101         R_Mesh_State(&m);
1102
1103         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1104         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1105         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1106         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1107         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1108         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1109         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1110         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1111         R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1112         if (fogenabled)
1113         {
1114                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1115                 {
1116                         VectorSubtract(v, r_origin, diff);
1117                         f2 = exp(fogdensity/DotProduct(diff, diff));
1118                         f1 = 1 - f2;
1119                         f2 *= r_colorscale;
1120                         c[0] = c[0] * f1 + fogcolor[0] * f2;
1121                         c[1] = c[1] * f1 + fogcolor[1] * f2;
1122                         c[2] = c[2] * f1 + fogcolor[2] * f2;
1123                 }
1124         }
1125         GL_UseColorArray();
1126         R_Mesh_Draw(8, 12);
1127 }
1128 */
1129
1130 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1131 {
1132         const entity_render_t *ent = calldata1;
1133         int i, element[24];
1134         float f1, f2, *c, diff[3];
1135         rmeshstate_t m;
1136         memset(&m, 0, sizeof(m));
1137         if (ent->flags & EF_ADDITIVE)
1138         {
1139                 m.blendfunc1 = GL_SRC_ALPHA;
1140                 m.blendfunc2 = GL_ONE;
1141         }
1142         else if (ent->alpha < 1)
1143         {
1144                 m.blendfunc1 = GL_SRC_ALPHA;
1145                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1146         }
1147         else
1148         {
1149                 m.blendfunc1 = GL_ONE;
1150                 m.blendfunc2 = GL_ZERO;
1151         }
1152         R_Mesh_Matrix(&ent->matrix);
1153         R_Mesh_State(&m);
1154
1155         element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1156         element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1157         element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1158         element[ 9] = 5;element[10] = 3;element[11] = 1;
1159         element[12] = 0;element[13] = 2;element[14] = 4;
1160         element[15] = 2;element[16] = 1;element[17] = 4;
1161         element[18] = 3;element[19] = 0;element[20] = 4;
1162         element[21] = 1;element[22] = 3;element[23] = 4;
1163         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
1164         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
1165         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
1166         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
1167         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
1168         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
1169         varray_color[ 0] = 0.00f * r_colorscale;varray_color[ 1] = 0.00f * r_colorscale;varray_color[ 2] = 0.50f * r_colorscale;varray_color[ 3] = ent->alpha;
1170         varray_color[ 4] = 0.00f * r_colorscale;varray_color[ 5] = 0.00f * r_colorscale;varray_color[ 6] = 0.50f * r_colorscale;varray_color[ 7] = ent->alpha;
1171         varray_color[ 8] = 0.00f * r_colorscale;varray_color[ 9] = 0.50f * r_colorscale;varray_color[10] = 0.00f * r_colorscale;varray_color[11] = ent->alpha;
1172         varray_color[12] = 0.00f * r_colorscale;varray_color[13] = 0.50f * r_colorscale;varray_color[14] = 0.00f * r_colorscale;varray_color[15] = ent->alpha;
1173         varray_color[16] = 0.50f * r_colorscale;varray_color[17] = 0.00f * r_colorscale;varray_color[18] = 0.00f * r_colorscale;varray_color[19] = ent->alpha;
1174         varray_color[20] = 0.50f * r_colorscale;varray_color[21] = 0.00f * r_colorscale;varray_color[22] = 0.00f * r_colorscale;varray_color[23] = ent->alpha;
1175         if (fogenabled)
1176         {
1177                 VectorSubtract(ent->origin, r_origin, diff);
1178                 f2 = exp(fogdensity/DotProduct(diff, diff));
1179                 f1 = 1 - f2;
1180                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1181                 {
1182                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1183                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1184                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1185                 }
1186         }
1187         else
1188         {
1189                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1190                 {
1191                         c[0] *= r_colorscale;
1192                         c[1] *= r_colorscale;
1193                         c[2] *= r_colorscale;
1194                 }
1195         }
1196         GL_UseColorArray();
1197         R_Mesh_Draw(6, 8, element);
1198 }
1199
1200 void R_DrawNoModel(entity_render_t *ent)
1201 {
1202         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1203                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1204         //else
1205         //      R_DrawNoModelCallback(ent, 0);
1206 }
1207
1208 void R_CalcBeamVerts (float *vert, vec3_t org1, vec3_t org2, float width)
1209 {
1210         vec3_t right1, right2, diff, normal;
1211
1212         VectorSubtract (org2, org1, normal);
1213         VectorNormalizeFast (normal);
1214
1215         // calculate 'right' vector for start
1216         VectorSubtract (r_origin, org1, diff);
1217         VectorNormalizeFast (diff);
1218         CrossProduct (normal, diff, right1);
1219
1220         // calculate 'right' vector for end
1221         VectorSubtract (r_origin, org2, diff);
1222         VectorNormalizeFast (diff);
1223         CrossProduct (normal, diff, right2);
1224
1225         vert[ 0] = org1[0] + width * right1[0];
1226         vert[ 1] = org1[1] + width * right1[1];
1227         vert[ 2] = org1[2] + width * right1[2];
1228         vert[ 4] = org1[0] - width * right1[0];
1229         vert[ 5] = org1[1] - width * right1[1];
1230         vert[ 6] = org1[2] - width * right1[2];
1231         vert[ 8] = org2[0] - width * right2[0];
1232         vert[ 9] = org2[1] - width * right2[1];
1233         vert[10] = org2[2] - width * right2[2];
1234         vert[12] = org2[0] + width * right2[0];
1235         vert[13] = org2[1] + width * right2[1];
1236         vert[14] = org2[2] + width * right2[2];
1237 }