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", "1"};
  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 VIS_CullBox(const vec3_t mins, const vec3_t maxs)
 407 {
 408         int stackpos, sides;
 409         mnode_t *node, *stack[4096];
 410         if (R_CullBox(mins, maxs))
 411                 return true;
 412         stackpos = 0;
 413         stack[stackpos++] = cl.worldmodel->nodes;
 414         while (stackpos)
 415         {
 416                 node = stack[--stackpos];
 417                 if (node->contents < 0)
 418                 {
 419                         if (((mleaf_t *)node)->visframe == r_framecount)
 420                                 return false;
 421                 }
 422                 else
 423                 {
 424                         sides = BoxOnPlaneSide(mins, maxs, node->plane);
 425                         if (sides & 2 && stackpos < 4096)
 426                                 stack[stackpos++] = node->children[1];
 427                         if (sides & 1 && stackpos < 4096)
 428                                 stack[stackpos++] = node->children[0];
 429                 }
 430         }
 431         return true;
 432 }
 433
 434 int R_CullSphere(const vec3_t origin, vec_t radius)
 435 {
 436         return (DotProduct(frustum[0].normal, origin) + radius < frustum[0].dist
 437              || DotProduct(frustum[1].normal, origin) + radius < frustum[1].dist
 438              || DotProduct(frustum[2].normal, origin) + radius < frustum[2].dist
 439              || DotProduct(frustum[3].normal, origin) + radius < frustum[3].dist);
 440 }
 441
 442 int PVS_CullSphere(const vec3_t origin, vec_t radius)
 443 {
 444         int stackpos;
 445         mnode_t *node, *stack[4096];
 446         float dist;
 447         stackpos = 0;
 448         stack[stackpos++] = cl.worldmodel->nodes;
 449         while (stackpos)
 450         {
 451                 node = stack[--stackpos];
 452                 if (node->contents < 0)
 453                 {
 454                         if (((mleaf_t *)node)->pvsframe == cl.worldmodel->pvsframecount)
 455                                 return false;
 456                 }
 457                 else
 458                 {
 459                         dist = PlaneDiff(origin, node->plane);
 460                         if (dist <= radius)
 461                                 stack[stackpos++] = node->children[1];
 462                         if (dist >= -radius)
 463                                 stack[stackpos++] = node->children[0];
 464                 }
 465         }
 466         return true;
 467 }
 468
 469 int VIS_CullSphere(const vec3_t origin, vec_t radius)
 470 {
 471         int stackpos;
 472         mnode_t *node, *stack[4096];
 473         float dist;
 474         if (R_CullSphere(origin, radius))
 475                 return true;
 476         stackpos = 0;
 477         stack[stackpos++] = cl.worldmodel->nodes;
 478         while (stackpos)
 479         {
 480                 node = stack[--stackpos];
 481                 if (node->contents < 0)
 482                 {
 483                         if (((mleaf_t *)node)->visframe == r_framecount)
 484                                 return false;
 485                 }
 486                 else
 487                 {
 488                         dist = PlaneDiff(origin, node->plane);
 489                         if (dist <= radius)
 490                                 stack[stackpos++] = node->children[1];
 491                         if (dist >= -radius)
 492                                 stack[stackpos++] = node->children[0];
 493                 }
 494         }
 495         return true;
 496 }
 497
 498
 499 //==================================================================================
 500
 501 static void R_MarkEntities (void)
 502 {
 503         int i;
 504         vec3_t v;
 505         entity_render_t *ent;
 506
 507         ent = &cl_entities[0].render;
 508         Matrix4x4_CreateIdentity(&ent->matrix);
 509         Matrix4x4_CreateIdentity(&ent->inversematrix);
 510
 511         if (cl.worldmodel)
 512                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 513
 514         if (!r_drawentities.integer)
 515                 return;
 516
 517         for (i = 0;i < r_refdef.numentities;i++)
 518         {
 519                 ent = r_refdef.entities[i];
 520                 Mod_CheckLoaded(ent->model);
 521
 522                 // move view-relative models to where they should be
 523                 if (ent->flags & RENDER_VIEWMODEL)
 524                 {
 525                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 526                         ent->flags -= RENDER_VIEWMODEL;
 527                         // transform origin
 528                         VectorCopy(ent->origin, v);
 529                         ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 530                         ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 531                         ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 532                         // adjust angles
 533                         VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
 534                 }
 535
 536                 VectorCopy(ent->angles, v);
 537                 if (!ent->model || ent->model->type != mod_brush)
 538                         v[0] = -v[0];
 539                 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
 540                 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 541                 R_LerpAnimation(ent);
 542                 R_UpdateEntLights(ent);
 543                 if (!VIS_CullSphere(ent->origin, ent->model->radius * ent->scale)
 544                  && !VIS_CullBox(ent->mins, ent->maxs))
 545                 {
 546                         ent->visframe = r_framecount;
 547                         R_FarClip_Box(ent->mins, ent->maxs);
 548                 }
 549         }
 550 }
 551
 552 // only used if skyrendermasked, and normally returns false
 553 int R_DrawBrushModelsSky (void)
 554 {
 555         int i, sky;
 556         entity_render_t *ent;
 557
 558         if (!r_drawentities.integer)
 559                 return false;
 560
 561         sky = false;
 562         for (i = 0;i < r_refdef.numentities;i++)
 563         {
 564                 ent = r_refdef.entities[i];
 565                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 566                 {
 567                         ent->model->DrawSky(ent);
 568                         sky = true;
 569                 }
 570         }
 571         return sky;
 572 }
 573
 574 /*
 575 =============
 576 R_DrawViewModel
 577 =============
 578 */
 579 void R_DrawViewModel (void)
 580 {
 581         entity_render_t *ent;
 582
 583         // FIXME: move these checks to client
 584         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 585                 return;
 586
 587         ent = &cl.viewent.render;
 588         Mod_CheckLoaded(ent->model);
 589         R_LerpAnimation(ent);
 590         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 591         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 592         R_UpdateEntLights(ent);
 593         ent->model->Draw(ent);
 594 }
 595
 596 void R_DrawNoModel(entity_render_t *ent);
 597 void R_DrawModels ()
 598 {
 599         int i;
 600         entity_render_t *ent;
 601
 602         if (!r_drawentities.integer)
 603                 return;
 604
 605         R_DrawViewModel();
 606         for (i = 0;i < r_refdef.numentities;i++)
 607         {
 608                 ent = r_refdef.entities[i];
 609                 if (ent->visframe == r_framecount)
 610                 {
 611                         if (ent->model && ent->model->Draw != NULL)
 612                                 ent->model->Draw(ent);
 613                         else
 614                                 R_DrawNoModel(ent);
 615                 }
 616         }
 617 }
 618
 619 void R_DrawFakeShadows (void)
 620 {
 621         int i;
 622         entity_render_t *ent;
 623
 624         ent = &cl_entities[0].render;
 625         if (ent->model && ent->model->DrawFakeShadow)
 626                 ent->model->DrawFakeShadow(ent);
 627
 628         if (!r_drawentities.integer)
 629                 return;
 630         for (i = 0;i < r_refdef.numentities;i++)
 631         {
 632                 ent = r_refdef.entities[i];
 633                 if (ent->model && ent->model->DrawFakeShadow)
 634                         ent->model->DrawFakeShadow(ent);
 635         }
 636 }
 637
 638 #include "r_shadow.h"
 639
 640 void R_TestAndDrawShadowVolume(entity_render_t *ent, vec3_t lightorigin, float cullradius, float lightradius)
 641 {
 642         int i;
 643         vec3_t p, p2, temp, relativelightorigin, mins, maxs;
 644         float dist, projectdistance;
 645         // rough checks
 646         if (ent->model && ent->model->DrawShadowVolume)
 647         {
 648                 temp[0] = bound(ent->mins[0], lightorigin[0], ent->maxs[0]) - lightorigin[0];
 649                 temp[1] = bound(ent->mins[1], lightorigin[1], ent->maxs[1]) - lightorigin[1];
 650                 temp[2] = bound(ent->mins[2], lightorigin[2], ent->maxs[2]) - lightorigin[2];
 651                 dist = DotProduct(temp, temp);
 652                 if (dist < cullradius * cullradius)
 653                 {
 654                         projectdistance = cullradius - sqrt(dist);
 655                         // calculate projected bounding box and decide if it is on-screen
 656                         VectorCopy(ent->mins, mins);
 657                         VectorCopy(ent->maxs, maxs);
 658                         for (i = 0;i < 8;i++)
 659                         {
 660                                 p[0] = i & 1 ? ent->maxs[0] : ent->mins[0];
 661                                 p[1] = i & 2 ? ent->maxs[1] : ent->mins[1];
 662                                 p[2] = i & 4 ? ent->maxs[2] : ent->mins[2];
 663                                 VectorSubtract(p, lightorigin, temp);
 664                                 dist = projectdistance / sqrt(DotProduct(temp, temp));
 665                                 VectorMA(p, dist, temp, p2);
 666                                 if (mins[0] > p2[0]) mins[0] = p2[0];if (maxs[0] < p2[0]) maxs[0] = p2[0];
 667                                 if (mins[1] > p2[1]) mins[1] = p2[1];if (maxs[1] < p2[1]) maxs[1] = p2[1];
 668                                 if (mins[2] > p2[2]) mins[2] = p2[2];if (maxs[2] < p2[2]) maxs[2] = p2[2];
 669                         }
 670                         if (!VIS_CullBox(mins, maxs))
 671                         {
 672                                 Matrix4x4_Transform(&ent->inversematrix, lightorigin, relativelightorigin);
 673                                 ent->model->DrawShadowVolume (ent, relativelightorigin, lightradius);
 674                         }
 675                 }
 676         }
 677 }
 678
 679 void R_DrawWorldLightShadowVolume(mlight_t *sl)
 680 {
 681         shadowmesh_t *mesh;
 682         R_Mesh_Matrix(&cl_entities[0].render.matrix);
 683         for (mesh = sl->shadowvolume;mesh;mesh = mesh->next)
 684         {
 685                 R_Mesh_ResizeCheck(mesh->numverts);
 686                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 687                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 688         }
 689 }
 690
 691 #define SHADOWSPHERE_SEGMENTS 16
 692
 693 shadowmesh_t *shadowsphere;
 694 void R_CreateShadowSphere(void)
 695 {
 696         int i, j;
 697         vec3_t angles, angles2, angles3, angles4;
 698         float verts[12];
 699         shadowsphere = Mod_ShadowMesh_Begin(zonemempool);
 700         for (i = 0;i < SHADOWSPHERE_SEGMENTS / 2;i++)
 701         {
 702                 for (j = 0;j < SHADOWSPHERE_SEGMENTS;j++)
 703                 {
 704                         angles[0] = (i * 360.0f / SHADOWSPHERE_SEGMENTS) + 90.0f;
 705                         angles[1] = j * 360.0f / SHADOWSPHERE_SEGMENTS;
 706                         angles[2] = 0;
 707                         VectorCopy(angles, angles2);
 708                         VectorCopy(angles, angles3);
 709                         VectorCopy(angles, angles4);
 710                         angles2[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 711                         angles3[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 712                         angles3[1] += 360.0f / SHADOWSPHERE_SEGMENTS;
 713                         angles4[0] += 360.0f / SHADOWSPHERE_SEGMENTS;
 714                         AngleVectorsFLU(angles, verts, NULL, NULL);
 715                         AngleVectorsFLU(angles2, verts + 9, NULL, NULL);
 716                         AngleVectorsFLU(angles3, verts + 6, NULL, NULL);
 717                         AngleVectorsFLU(angles4, verts + 3, NULL, NULL);
 718                         VectorScale(&verts[0], 1.0f, &verts[0]);
 719                         VectorScale(&verts[3], 1.0f, &verts[3]);
 720                         VectorScale(&verts[6], 1.0f, &verts[6]);
 721                         VectorScale(&verts[9], 1.0f, &verts[9]);
 722                         Mod_ShadowMesh_AddPolygon(zonemempool, shadowsphere, 4, verts);
 723                 }
 724         }
 725         shadowsphere = Mod_ShadowMesh_Finish(zonemempool, shadowsphere);
 726 }
 727
 728
 729 void R_DrawShadowSphere(vec3_t origin, float cullradius, float lightradius)
 730 {
 731         shadowmesh_t *mesh;
 732         matrix4x4_t matrix;
 733         if (!shadowsphere)
 734                 R_CreateShadowSphere();
 735         Matrix4x4_CreateScale(&matrix, lightradius);
 736         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 737         R_Mesh_Matrix(&matrix);
 738         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 739         {
 740                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 741                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 742         }
 743         Matrix4x4_CreateScale(&matrix, -cullradius);
 744         Matrix4x4_ConcatTranslate(&matrix, origin[0], origin[1], origin[2]);
 745         R_Mesh_Matrix(&matrix);
 746         for (mesh = shadowsphere;mesh;mesh = mesh->next)
 747         {
 748                 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
 749                 R_Shadow_RenderVolume(mesh->numverts, mesh->numtriangles, mesh->elements);
 750         }
 751 }
 752
 753 void R_ShadowVolumeLighting (int visiblevolumes)
 754 {
 755         int i;
 756         entity_render_t *ent;
 757         int lnum;
 758         float f, lightradius, cullradius;
 759         vec3_t relativelightorigin, relativeeyeorigin, lightcolor;
 760         mlight_t *sl;
 761         rdlight_t *rd;
 762         rmeshstate_t m;
 763
 764         if (visiblevolumes)
 765         {
 766                 memset(&m, 0, sizeof(m));
 767                 m.blendfunc1 = GL_ONE;
 768                 m.blendfunc2 = GL_ONE;
 769                 R_Mesh_State(&m);
 770                 GL_Color(0.0 * r_colorscale, 0.0125 * r_colorscale, 0.1 * r_colorscale, 1);
 771         }
 772         else
 773                 R_Shadow_Stage_Begin();
 774         for (lnum = 0, sl = cl.worldmodel->lights;lnum < cl.worldmodel->numlights;lnum++, sl++)
 775         {
 776                 if (d_lightstylevalue[sl->style] <= 0)
 777                         continue;
 778                 if (r_light_debuglight.integer >= 0 && lnum != r_light_debuglight.integer)
 779                         continue;
 780                 cullradius = sl->cullradius;
 781                 lightradius = sl->lightradius;
 782                 if (VIS_CullBox(sl->mins, sl->maxs) || VIS_CullSphere(sl->origin, cullradius))
 783                         continue;
 784
 785                 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
 786                 VectorScale(sl->light, f, lightcolor);
 787
 788                 if (!visiblevolumes)
 789                         R_Shadow_Stage_ShadowVolumes();
 790                 if (sl->shadowvolume && r_staticworldlights.integer)
 791                         R_DrawWorldLightShadowVolume(sl);
 792                 else
 793                 {
 794                         //R_DrawShadowSphere(sl->origin, cullradius, lightradius * 2);
 795                         R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius, lightradius);
 796                 }
 797                 if (r_drawentities.integer)
 798                 {
 799                         for (i = 0;i < r_refdef.numentities;i++)
 800                         {
 801                                 ent = r_refdef.entities[i];
 802                                 if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
 803                                  && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
 804                                  && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
 805                                  && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 806                                         R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius, lightradius);
 807                         }
 808                 }
 809
 810                 if (!visiblevolumes)
 811                 {
 812                         R_Shadow_Stage_Light();
 813                         ent = &cl_entities[0].render;
 814                         if (ent->model && ent->model->DrawLight)
 815                         {
 816                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
 817                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 818                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
 819                         }
 820                         if (r_drawentities.integer)
 821                         {
 822                                 for (i = 0;i < r_refdef.numentities;i++)
 823                                 {
 824                                         ent = r_refdef.entities[i];
 825                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
 826                                          && ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
 827                                          && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
 828                                          && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
 829                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 830                                         {
 831                                                 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
 832                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 833                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, sl->distbias, sl->subtract, lightcolor);
 834                                         }
 835                                 }
 836                         }
 837
 838                         R_Shadow_Stage_EraseShadowVolumes();
 839                         if (sl->shadowvolume && r_staticworldlights.integer)
 840                                 R_DrawWorldLightShadowVolume(sl);
 841                         else
 842                         {
 843                                 //R_DrawShadowSphere(sl->origin, cullradius, lightradius * 2);
 844                                 R_TestAndDrawShadowVolume(&cl_entities[0].render, sl->origin, cullradius, lightradius);
 845                         }
 846                         if (r_drawentities.integer)
 847                         {
 848                                 for (i = 0;i < r_refdef.numentities;i++)
 849                                 {
 850                                         ent = r_refdef.entities[i];
 851                                         if (ent->maxs[0] >= sl->mins[0] && ent->mins[0] <= sl->maxs[0]
 852                                          && ent->maxs[1] >= sl->mins[1] && ent->mins[1] <= sl->maxs[1]
 853                                          && ent->maxs[2] >= sl->mins[2] && ent->mins[2] <= sl->maxs[2]
 854                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 855                                                 R_TestAndDrawShadowVolume(r_refdef.entities[i], sl->origin, cullradius, lightradius);
 856                                 }
 857                         }
 858                 }
 859         }
 860         for (lnum = 0, rd = r_dlight;lnum < r_numdlights;lnum++, rd++)
 861         {
 862                 cullradius = rd->cullradius;
 863                 lightradius = rd->cullradius;
 864                 if (VIS_CullSphere(rd->origin, cullradius))
 865                         continue;
 866
 867                 VectorScale(rd->light, 16.0f, lightcolor);
 868
 869                 if (!visiblevolumes)
 870                         R_Shadow_Stage_ShadowVolumes();
 871                 R_TestAndDrawShadowVolume(&cl_entities[0].render, rd->origin, cullradius, lightradius);
 872                 if (r_drawentities.integer)
 873                 {
 874                         for (i = 0;i < r_refdef.numentities;i++)
 875                         {
 876                                 ent = r_refdef.entities[i];
 877                                 if (ent != rd->ent && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 878                                         R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius);
 879                         }
 880                 }
 881
 882                 if (!visiblevolumes)
 883                 {
 884                         R_Shadow_Stage_Light();
 885                         ent = &cl_entities[0].render;
 886                         if (ent->model && ent->model->DrawLight)
 887                         {
 888                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
 889                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 890                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, LIGHTOFFSET, rd->subtract, lightcolor);
 891                         }
 892                         if (r_drawentities.integer)
 893                         {
 894                                 for (i = 0;i < r_refdef.numentities;i++)
 895                                 {
 896                                         ent = r_refdef.entities[i];
 897                                         if (ent->visframe == r_framecount && ent->model && ent->model->DrawLight
 898                                          && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 899                                         {
 900                                                 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
 901                                                 Matrix4x4_Transform(&ent->inversematrix, r_origin, relativeeyeorigin);
 902                                                 ent->model->DrawLight(ent, relativelightorigin, relativeeyeorigin, lightradius, LIGHTOFFSET, rd->subtract, lightcolor);
 903                                         }
 904                                 }
 905                         }
 906
 907                         R_Shadow_Stage_EraseShadowVolumes();
 908                         R_TestAndDrawShadowVolume(&cl_entities[0].render, rd->origin, cullradius, lightradius);
 909                         if (r_drawentities.integer)
 910                         {
 911                                 for (i = 0;i < r_refdef.numentities;i++)
 912                                 {
 913                                         ent = r_refdef.entities[i];
 914                                         if (ent != rd->ent && !(ent->effects & EF_ADDITIVE) && ent->alpha == 1)
 915                                                 R_TestAndDrawShadowVolume(ent, rd->origin, cullradius, lightradius);
 916                                 }
 917                         }
 918                 }
 919         }
 920
 921         if (!visiblevolumes)
 922                 R_Shadow_Stage_End();
 923 }
 924
 925 static void R_SetFrustum (void)
 926 {
 927         int i;
 928
 929         // LordHavoc: note to all quake engine coders, the special case for 90
 930         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
 931         // disabled as well.
 932         // rotate VPN right by FOV_X/2 degrees
 933         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 934         // rotate VPN left by FOV_X/2 degrees
 935         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 936         // rotate VPN up by FOV_X/2 degrees
 937         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 938         // rotate VPN down by FOV_X/2 degrees
 939         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 940
 941         for (i = 0;i < 4;i++)
 942         {
 943                 frustum[i].type = PLANE_ANYZ;
 944                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 945                 PlaneClassify(&frustum[i]);
 946         }
 947 }
 948
 949 /*
 950 ===============
 951 R_SetupFrame
 952 ===============
 953 */
 954 static void R_SetupFrame (void)
 955 {
 956 // don't allow cheats in multiplayer
 957         if (cl.maxclients > 1)
 958         {
 959                 if (r_fullbright.integer != 0)
 960                         Cvar_Set ("r_fullbright", "0");
 961                 if (r_ambient.value != 0)
 962                         Cvar_Set ("r_ambient", "0");
 963         }
 964
 965         r_framecount++;
 966
 967 // build the transformation matrix for the given view angles
 968         VectorCopy (r_refdef.vieworg, r_origin);
 969
 970         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 971
 972         R_AnimateLight ();
 973 }
 974
 975
 976 static void R_BlendView(void)
 977 {
 978         rmeshstate_t m;
 979         float r;
 980
 981         if (r_refdef.viewblend[3] < 0.01f)
 982                 return;
 983
 984         memset(&m, 0, sizeof(m));
 985         m.blendfunc1 = GL_SRC_ALPHA;
 986         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 987         m.depthdisable = true; // magic
 988         R_Mesh_Matrix(&r_identitymatrix);
 989         R_Mesh_State(&m);
 990
 991         r = 64000;
 992         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
 993         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
 994         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
 995         r *= 3;
 996         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
 997         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
 998         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
 999         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
1000         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
1001         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
1002         GL_Color(r_refdef.viewblend[0], r_refdef.viewblend[1], r_refdef.viewblend[2], r_refdef.viewblend[3]);
1003         R_Mesh_Draw(3, 1, polygonelements);
1004 }
1005
1006 /*
1007 ================
1008 R_RenderView
1009
1010 r_refdef must be set before the first call
1011 ================
1012 */
1013 void R_RenderView (void)
1014 {
1015         entity_render_t *world;
1016         if (!r_refdef.entities/* || !cl.worldmodel*/)
1017                 return; //Host_Error ("R_RenderView: NULL worldmodel");
1018
1019         world = &cl_entities[0].render;
1020
1021         // FIXME: move to client
1022         R_MoveExplosions();
1023         R_TimeReport("mexplosion");
1024
1025         R_Textures_Frame();
1026         R_SetupFrame();
1027         R_SetFrustum();
1028         R_SetupFog();
1029         R_SkyStartFrame();
1030         R_BuildLightList();
1031         R_TimeReport("setup");
1032
1033         R_WorldVisibility(world);
1034         R_TimeReport("worldvis");
1035
1036         R_FarClip_Start(r_origin, vpn, 768.0f);
1037         R_MarkEntities();
1038         r_farclip = R_FarClip_Finish() + 256.0f;
1039         R_TimeReport("markentity");
1040
1041         GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
1042         if (r_shadows.integer == 3)
1043                 GL_SetupView_Mode_PerspectiveInfiniteFarClip(r_refdef.fov_x, r_refdef.fov_y, 1.0f);
1044         else
1045                 GL_SetupView_Mode_Perspective(r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
1046         GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
1047         qglDepthFunc(GL_LEQUAL);
1048
1049         R_Mesh_Start();
1050         R_MeshQueue_BeginScene();
1051
1052         if (r_shadows.integer == 3)
1053         {
1054                 if (!gl_texturecubemap)
1055                 {
1056                         Con_Printf("Cubemap texture support not detected, turning off r_shadows 3\n");
1057                         Cvar_SetValueQuick(&r_shadows, 0);
1058                 }
1059                 else if (!gl_dot3arb)
1060                 {
1061                         Con_Printf("Bumpmapping support not detected, turning off r_shadows 3\n");
1062                         Cvar_SetValueQuick(&r_shadows, 0);
1063                 }
1064                 else if (!gl_stencil)
1065                 {
1066                         Con_Printf("Stencil not enabled, turning off r_shadows 3, please type vid_stencil 1;vid_restart and try again\n");
1067                         Cvar_SetValueQuick(&r_shadows, 0);
1068                 }
1069                 else if (!gl_combine.integer)
1070                 {
1071                         Con_Printf("Combine disabled, please turn on gl_combine, turning off r_shadows 3\n");
1072                         Cvar_SetValueQuick(&r_shadows, 0);
1073                 }
1074         }
1075
1076         if (R_DrawBrushModelsSky())
1077                 R_TimeReport("bmodelsky");
1078
1079         // must occur early because it can draw sky
1080         R_DrawWorld(world);
1081         R_TimeReport("world");
1082
1083         // don't let sound skip if going slow
1084         if (!intimerefresh && !r_speeds.integer)
1085                 S_ExtraUpdate ();
1086
1087         R_DrawModels(r_shadows.integer == 3);
1088         R_TimeReport("models");
1089
1090         if (r_shadows.integer == 1)
1091         {
1092                 R_DrawFakeShadows();
1093                 R_TimeReport("fakeshadow");
1094         }
1095
1096         if (r_shadows.integer == 3)
1097         {
1098                 R_ShadowVolumeLighting(false);
1099                 R_TimeReport("dynlight");
1100         }
1101
1102         R_DrawParticles();
1103         R_TimeReport("particles");
1104
1105         R_DrawExplosions();
1106         R_TimeReport("explosions");
1107
1108         R_MeshQueue_RenderTransparent();
1109         R_TimeReport("drawtrans");
1110
1111         R_DrawCoronas();
1112         R_TimeReport("coronas");
1113
1114         R_DrawWorldCrosshair();
1115         R_TimeReport("crosshair");
1116
1117         R_BlendView();
1118         R_TimeReport("blendview");
1119
1120         R_MeshQueue_Render();
1121         R_MeshQueue_EndScene();
1122         if (r_shadows.integer == 2)
1123         {
1124                 R_ShadowVolumeLighting(true);
1125                 R_TimeReport("shadowvolume");
1126         }
1127         R_Mesh_Finish();
1128         R_TimeReport("meshfinish");
1129 }
1130
1131 /*
1132 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
1133 {
1134         int i;
1135         float *v, *c, f1, f2, diff[3];
1136         rmeshstate_t m;
1137         m.blendfunc1 = GL_SRC_ALPHA;
1138         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1139         R_Mesh_Matrix(&r_identitymatrix);
1140         R_Mesh_State(&m);
1141
1142         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
1143         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
1144         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
1145         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
1146         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
1147         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
1148         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
1149         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
1150         R_FillColors(varray_color, 8, cr * r_colorscale, cg * r_colorscale, cb * r_colorscale, ca);
1151         if (fogenabled)
1152         {
1153                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
1154                 {
1155                         VectorSubtract(v, r_origin, diff);
1156                         f2 = exp(fogdensity/DotProduct(diff, diff));
1157                         f1 = 1 - f2;
1158                         f2 *= r_colorscale;
1159                         c[0] = c[0] * f1 + fogcolor[0] * f2;
1160                         c[1] = c[1] * f1 + fogcolor[1] * f2;
1161                         c[2] = c[2] * f1 + fogcolor[2] * f2;
1162                 }
1163         }
1164         GL_UseColorArray();
1165         R_Mesh_Draw(8, 12);
1166 }
1167 */
1168
1169 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
1170 {
1171         const entity_render_t *ent = calldata1;
1172         int i, element[24];
1173         float f1, f2, *c, diff[3];
1174         rmeshstate_t m;
1175         memset(&m, 0, sizeof(m));
1176         if (ent->flags & EF_ADDITIVE)
1177         {
1178                 m.blendfunc1 = GL_SRC_ALPHA;
1179                 m.blendfunc2 = GL_ONE;
1180         }
1181         else if (ent->alpha < 1)
1182         {
1183                 m.blendfunc1 = GL_SRC_ALPHA;
1184                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1185         }
1186         else
1187         {
1188                 m.blendfunc1 = GL_ONE;
1189                 m.blendfunc2 = GL_ZERO;
1190         }
1191         R_Mesh_Matrix(&ent->matrix);
1192         R_Mesh_State(&m);
1193
1194         element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
1195         element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
1196         element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
1197         element[ 9] = 5;element[10] = 3;element[11] = 1;
1198         element[12] = 0;element[13] = 2;element[14] = 4;
1199         element[15] = 2;element[16] = 1;element[17] = 4;
1200         element[18] = 3;element[19] = 0;element[20] = 4;
1201         element[21] = 1;element[22] = 3;element[23] = 4;
1202         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
1203         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
1204         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
1205         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
1206         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
1207         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
1208         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;
1209         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;
1210         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;
1211         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;
1212         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;
1213         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;
1214         if (fogenabled)
1215         {
1216                 VectorSubtract(ent->origin, r_origin, diff);
1217                 f2 = exp(fogdensity/DotProduct(diff, diff));
1218                 f1 = 1 - f2;
1219                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1220                 {
1221                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
1222                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
1223                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
1224                 }
1225         }
1226         else
1227         {
1228                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
1229                 {
1230                         c[0] *= r_colorscale;
1231                         c[1] *= r_colorscale;
1232                         c[2] *= r_colorscale;
1233                 }
1234         }
1235         GL_UseColorArray();
1236         R_Mesh_Draw(6, 8, element);
1237 }
1238
1239 void R_DrawNoModel(entity_render_t *ent)
1240 {
1241         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
1242                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
1243         //else
1244         //      R_DrawNoModelCallback(ent, 0);
1245 }
1246
1247 void R_CalcBeamVerts (float *vert, vec3_t org1, vec3_t org2, float width)
1248 {
1249         vec3_t right1, right2, diff, normal;
1250
1251         VectorSubtract (org2, org1, normal);
1252         VectorNormalizeFast (normal);
1253
1254         // calculate 'right' vector for start
1255         VectorSubtract (r_origin, org1, diff);
1256         VectorNormalizeFast (diff);
1257         CrossProduct (normal, diff, right1);
1258
1259         // calculate 'right' vector for end
1260         VectorSubtract (r_origin, org2, diff);
1261         VectorNormalizeFast (diff);
1262         CrossProduct (normal, diff, right2);
1263
1264         vert[ 0] = org1[0] + width * right1[0];
1265         vert[ 1] = org1[1] + width * right1[1];
1266         vert[ 2] = org1[2] + width * right1[2];
1267         vert[ 4] = org1[0] - width * right1[0];
1268         vert[ 5] = org1[1] - width * right1[1];
1269         vert[ 6] = org1[2] - width * right1[2];
1270         vert[ 8] = org2[0] - width * right2[0];
1271         vert[ 9] = org2[1] - width * right2[1];
1272         vert[10] = org2[2] - width * right2[2];
1273         vert[12] = org2[0] + width * right2[0];
1274         vert[13] = org2[1] + width * right2[1];
1275         vert[14] = org2[2] + width * right2[2];
1276 }