gl_rmain.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // r_main.c
  21
  22 #include "quakedef.h"
  23
  24 // used for dlight push checking and other things
  25 int r_framecount;
  26
  27 mplane_t frustum[4];
  28
  29 matrix4x4_t r_identitymatrix;
  30
  31 int c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
  32
  33 // true during envmap command capture
  34 qboolean envmap;
  35
  36 float r_farclip;
  37
  38 // view origin
  39 vec3_t r_origin;
  40 vec3_t vpn;
  41 vec3_t vright;
  42 vec3_t vup;
  43
  44 //
  45 // screen size info
  46 //
  47 refdef_t r_refdef;
  48
  49 // 8.8 fraction of base light value
  50 unsigned short d_lightstylevalue[256];
  51
  52 cvar_t r_drawentities = {0, "r_drawentities","1"};
  53 cvar_t r_drawviewmodel = {0, "r_drawviewmodel","1"};
  54 cvar_t r_speeds = {0, "r_speeds","0"};
  55 cvar_t r_fullbright = {0, "r_fullbright","0"};
  56 cvar_t r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  57 cvar_t r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  58 cvar_t r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  59
  60 cvar_t gl_fogenable = {0, "gl_fogenable", "0"};
  61 cvar_t gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  62 cvar_t gl_fogred = {0, "gl_fogred","0.3"};
  63 cvar_t gl_foggreen = {0, "gl_foggreen","0.3"};
  64 cvar_t gl_fogblue = {0, "gl_fogblue","0.3"};
  65 cvar_t gl_fogstart = {0, "gl_fogstart", "0"};
  66 cvar_t gl_fogend = {0, "gl_fogend","0"};
  67
  68 cvar_t r_textureunits = {0, "r_textureunits", "32"};
  69
  70 void R_ModulateColors(float *in, float *out, int verts, float r, float g, float b)
  71 {
  72         int i;
  73         for (i = 0;i < verts;i++)
  74         {
  75                 out[0] = in[0] * r;
  76                 out[1] = in[1] * g;
  77                 out[2] = in[2] * b;
  78                 out[3] = in[3];
  79                 in += 4;
  80                 out += 4;
  81         }
  82 }
  83
  84 void R_FillColors(float *out, int verts, float r, float g, float b, float a)
  85 {
  86         int i;
  87         for (i = 0;i < verts;i++)
  88         {
  89                 out[0] = r;
  90                 out[1] = g;
  91                 out[2] = b;
  92                 out[3] = a;
  93                 out += 4;
  94         }
  95 }
  96
  97 /*
  98 ====================
  99 R_TimeRefresh_f
 100
 101 For program optimization
 102 ====================
 103 */
 104 qboolean intimerefresh = 0;
 105 static void R_TimeRefresh_f (void)
 106 {
 107         int i;
 108         float start, stop, time;
 109
 110         intimerefresh = 1;
 111         start = Sys_DoubleTime ();
 112         for (i = 0;i < 128;i++)
 113         {
 114                 r_refdef.viewangles[0] = 0;
 115                 r_refdef.viewangles[1] = i/128.0*360.0;
 116                 r_refdef.viewangles[2] = 0;
 117                 CL_UpdateScreen();
 118         }
 119
 120         stop = Sys_DoubleTime ();
 121         intimerefresh = 0;
 122         time = stop-start;
 123         Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
 124 }
 125
 126 vec3_t fogcolor;
 127 vec_t fogdensity;
 128 float fog_density, fog_red, fog_green, fog_blue;
 129 qboolean fogenabled;
 130 qboolean oldgl_fogenable;
 131 void R_SetupFog(void)
 132 {
 133         if (gamemode == GAME_NEHAHRA)
 134         {
 135                 if (gl_fogenable.integer)
 136                 {
 137                         oldgl_fogenable = true;
 138                         fog_density = gl_fogdensity.value;
 139                         fog_red = gl_fogred.value;
 140                         fog_green = gl_foggreen.value;
 141                         fog_blue = gl_fogblue.value;
 142                 }
 143                 else if (oldgl_fogenable)
 144                 {
 145                         oldgl_fogenable = false;
 146                         fog_density = 0;
 147                         fog_red = 0;
 148                         fog_green = 0;
 149                         fog_blue = 0;
 150                 }
 151         }
 152         if (fog_density)
 153         {
 154                 fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 155                 fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 156                 fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 157         }
 158         if (fog_density)
 159         {
 160                 fogenabled = true;
 161                 fogdensity = -4000.0f / (fog_density * fog_density);
 162                 // fog color was already set
 163         }
 164         else
 165                 fogenabled = false;
 166 }
 167
 168 // FIXME: move this to client?
 169 void FOG_clear(void)
 170 {
 171         if (gamemode == GAME_NEHAHRA)
 172         {
 173                 Cvar_Set("gl_fogenable", "0");
 174                 Cvar_Set("gl_fogdensity", "0.2");
 175                 Cvar_Set("gl_fogred", "0.3");
 176                 Cvar_Set("gl_foggreen", "0.3");
 177                 Cvar_Set("gl_fogblue", "0.3");
 178         }
 179         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 180 }
 181
 182 // FIXME: move this to client?
 183 void FOG_registercvars(void)
 184 {
 185         if (gamemode == GAME_NEHAHRA)
 186         {
 187                 Cvar_RegisterVariable (&gl_fogenable);
 188                 Cvar_RegisterVariable (&gl_fogdensity);
 189                 Cvar_RegisterVariable (&gl_fogred);
 190                 Cvar_RegisterVariable (&gl_foggreen);
 191                 Cvar_RegisterVariable (&gl_fogblue);
 192                 Cvar_RegisterVariable (&gl_fogstart);
 193                 Cvar_RegisterVariable (&gl_fogend);
 194         }
 195 }
 196
 197 void gl_main_start(void)
 198 {
 199 }
 200
 201 void gl_main_shutdown(void)
 202 {
 203 }
 204
 205 extern void CL_ParseEntityLump(char *entitystring);
 206 void gl_main_newmap(void)
 207 {
 208         if (cl.worldmodel && cl.worldmodel->entities)
 209                 CL_ParseEntityLump(cl.worldmodel->entities);
 210         r_framecount = 1;
 211 }
 212
 213 void GL_Main_Init(void)
 214 {
 215         Matrix4x4_CreateIdentity(&r_identitymatrix);
 216 // FIXME: move this to client?
 217         FOG_registercvars();
 218         Cmd_AddCommand ("timerefresh", R_TimeRefresh_f);
 219         Cvar_RegisterVariable (&r_drawentities);
 220         Cvar_RegisterVariable (&r_drawviewmodel);
 221         Cvar_RegisterVariable (&r_speeds);
 222         Cvar_RegisterVariable (&r_fullbrights);
 223         Cvar_RegisterVariable (&r_wateralpha);
 224         Cvar_RegisterVariable (&r_dynamic);
 225         Cvar_RegisterVariable (&r_fullbright);
 226         Cvar_RegisterVariable (&r_textureunits);
 227         if (gamemode == GAME_NEHAHRA)
 228                 Cvar_SetValue("r_fullbrights", 0);
 229         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 230 }
 231
 232 vec3_t r_farclip_origin;
 233 vec3_t r_farclip_direction;
 234 vec_t r_farclip_directiondist;
 235 vec_t r_farclip_meshfarclip;
 236 int r_farclip_directionbit0;
 237 int r_farclip_directionbit1;
 238 int r_farclip_directionbit2;
 239
 240 // start a farclip measuring session
 241 void R_FarClip_Start(vec3_t origin, vec3_t direction, vec_t startfarclip)
 242 {
 243         VectorCopy(origin, r_farclip_origin);
 244         VectorCopy(direction, r_farclip_direction);
 245         r_farclip_directiondist = DotProduct(r_farclip_origin, r_farclip_direction);
 246         r_farclip_directionbit0 = r_farclip_direction[0] < 0;
 247         r_farclip_directionbit1 = r_farclip_direction[1] < 0;
 248         r_farclip_directionbit2 = r_farclip_direction[2] < 0;
 249         r_farclip_meshfarclip = r_farclip_directiondist + startfarclip;
 250 }
 251
 252 // enlarge farclip to accomodate box
 253 void R_FarClip_Box(vec3_t mins, vec3_t maxs)
 254 {
 255         float d;
 256         d = (r_farclip_directionbit0 ? mins[0] : maxs[0]) * r_farclip_direction[0]
 257           + (r_farclip_directionbit1 ? mins[1] : maxs[1]) * r_farclip_direction[1]
 258           + (r_farclip_directionbit2 ? mins[2] : maxs[2]) * r_farclip_direction[2];
 259         if (r_farclip_meshfarclip < d)
 260                 r_farclip_meshfarclip = d;
 261 }
 262
 263 // return farclip value
 264 float R_FarClip_Finish(void)
 265 {
 266         return r_farclip_meshfarclip - r_farclip_directiondist;
 267 }
 268
 269 /*
 270 ===============
 271 R_NewMap
 272 ===============
 273 */
 274 void R_NewMap (void)
 275 {
 276         R_Modules_NewMap();
 277 }
 278
 279 extern void R_Textures_Init(void);
 280 extern void Mod_RenderInit(void);
 281 extern void GL_Draw_Init(void);
 282 extern void GL_Main_Init(void);
 283 extern void GL_Models_Init(void);
 284 extern void R_Sky_Init(void);
 285 extern void GL_Surf_Init(void);
 286 extern void R_Crosshairs_Init(void);
 287 extern void R_Light_Init(void);
 288 extern void R_Particles_Init(void);
 289 extern void R_Explosion_Init(void);
 290 extern void ui_init(void);
 291 extern void gl_backend_init(void);
 292
 293 void Render_Init(void)
 294 {
 295         R_Modules_Shutdown();
 296         R_Textures_Init();
 297         Mod_RenderInit();
 298         gl_backend_init();
 299         R_MeshQueue_Init();
 300         GL_Draw_Init();
 301         GL_Main_Init();
 302         GL_Models_Init();
 303         R_Sky_Init();
 304         GL_Surf_Init();
 305         R_Crosshairs_Init();
 306         R_Light_Init();
 307         R_Particles_Init();
 308         R_Explosion_Init();
 309         ui_init();
 310         R_Modules_Start();
 311 }
 312
 313 /*
 314 ===============
 315 GL_Init
 316 ===============
 317 */
 318 extern char *ENGINE_EXTENSIONS;
 319 void GL_Init (void)
 320 {
 321         VID_CheckExtensions();
 322
 323         // LordHavoc: report supported extensions
 324         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 325
 326         qglCullFace(GL_FRONT);
 327         qglEnable(GL_TEXTURE_2D);
 328 }
 329
 330 int R_CullBox(const vec3_t emins, const vec3_t emaxs)
 331 {
 332         int i;
 333         mplane_t *p;
 334         for (i = 0;i < 4;i++)
 335         {
 336                 p = frustum + i;
 337                 switch(p->signbits)
 338                 {
 339                 default:
 340                 case 0:
 341                         if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
 342                                 return true;
 343                         break;
 344                 case 1:
 345                         if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
 346                                 return true;
 347                         break;
 348                 case 2:
 349                         if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
 350                                 return true;
 351                         break;
 352                 case 3:
 353                         if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
 354                                 return true;
 355                         break;
 356                 case 4:
 357                         if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
 358                                 return true;
 359                         break;
 360                 case 5:
 361                         if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
 362                                 return true;
 363                         break;
 364                 case 6:
 365                         if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
 366                                 return true;
 367                         break;
 368                 case 7:
 369                         if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
 370                                 return true;
 371                         break;
 372                 }
 373         }
 374         return false;
 375 }
 376
 377 int R_NotCulledBox(const vec3_t emins, const vec3_t emaxs)
 378 {
 379         int i;
 380         mplane_t *p;
 381         for (i = 0;i < 4;i++)
 382         {
 383                 p = frustum + i;
 384                 switch(p->signbits)
 385                 {
 386                 default:
 387                 case 0:
 388                         if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
 389                                 return false;
 390                         break;
 391                 case 1:
 392                         if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emaxs[2] < p->dist)
 393                                 return false;
 394                         break;
 395                 case 2:
 396                         if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
 397                                 return false;
 398                         break;
 399                 case 3:
 400                         if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emaxs[2] < p->dist)
 401                                 return false;
 402                         break;
 403                 case 4:
 404                         if (p->normal[0]*emaxs[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
 405                                 return false;
 406                         break;
 407                 case 5:
 408                         if (p->normal[0]*emins[0] + p->normal[1]*emaxs[1] + p->normal[2]*emins[2] < p->dist)
 409                                 return false;
 410                         break;
 411                 case 6:
 412                         if (p->normal[0]*emaxs[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
 413                                 return false;
 414                         break;
 415                 case 7:
 416                         if (p->normal[0]*emins[0] + p->normal[1]*emins[1] + p->normal[2]*emins[2] < p->dist)
 417                                 return false;
 418                         break;
 419                 }
 420         }
 421         return true;
 422 }
 423
 424
 425 //==================================================================================
 426
 427 static void R_MarkEntities (void)
 428 {
 429         int i;
 430         vec3_t v;
 431         entity_render_t *ent;
 432
 433         ent = &cl_entities[0].render;
 434         Matrix4x4_CreateIdentity(&ent->matrix);
 435         Matrix4x4_CreateIdentity(&ent->inversematrix);
 436
 437         if (cl.worldmodel)
 438                 R_FarClip_Box(cl.worldmodel->normalmins, cl.worldmodel->normalmaxs);
 439
 440         if (!r_drawentities.integer)
 441                 return;
 442
 443         for (i = 0;i < r_refdef.numentities;i++)
 444         {
 445                 ent = r_refdef.entities[i];
 446                 Mod_CheckLoaded(ent->model);
 447
 448                 // move view-relative models to where they should be
 449                 if (ent->flags & RENDER_VIEWMODEL)
 450                 {
 451                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 452                         ent->flags -= RENDER_VIEWMODEL;
 453                         // transform origin
 454                         VectorCopy(ent->origin, v);
 455                         ent->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 456                         ent->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 457                         ent->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 458                         // adjust angles
 459                         VectorAdd(ent->angles, r_refdef.viewangles, ent->angles);
 460                 }
 461
 462                 if (R_CullBox(ent->mins, ent->maxs))
 463                         continue;
 464
 465                 ent->visframe = r_framecount;
 466                 VectorCopy(ent->angles, v);
 467                 if (!ent->model || ent->model->type != mod_brush)
 468                         v[0] = -v[0];
 469                 Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], v[0], v[1], v[2], ent->scale);
 470                 Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 471                 R_LerpAnimation(ent);
 472                 R_UpdateEntLights(ent);
 473                 R_FarClip_Box(ent->mins, ent->maxs);
 474         }
 475 }
 476
 477 // only used if skyrendermasked, and normally returns false
 478 int R_DrawBrushModelsSky (void)
 479 {
 480         int i, sky;
 481         entity_render_t *ent;
 482
 483         if (!r_drawentities.integer)
 484                 return false;
 485
 486         sky = false;
 487         for (i = 0;i < r_refdef.numentities;i++)
 488         {
 489                 ent = r_refdef.entities[i];
 490                 if (ent->visframe == r_framecount && ent->model && ent->model->DrawSky)
 491                 {
 492                         ent->model->DrawSky(ent);
 493                         sky = true;
 494                 }
 495         }
 496         return sky;
 497 }
 498
 499 /*
 500 =============
 501 R_DrawViewModel
 502 =============
 503 */
 504 void R_DrawViewModel (void)
 505 {
 506         entity_render_t *ent;
 507
 508         // FIXME: move these checks to client
 509         if (!r_drawviewmodel.integer || chase_active.integer || envmap || !r_drawentities.integer || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 510                 return;
 511
 512         ent = &cl.viewent.render;
 513         Mod_CheckLoaded(ent->model);
 514         R_LerpAnimation(ent);
 515         Matrix4x4_CreateFromQuakeEntity(&ent->matrix, ent->origin[0], ent->origin[1], ent->origin[2], -ent->angles[0], ent->angles[1], ent->angles[2], ent->scale);
 516         Matrix4x4_Invert_Simple(&ent->inversematrix, &ent->matrix);
 517         R_UpdateEntLights(ent);
 518         ent->model->Draw(ent);
 519 }
 520
 521 void R_DrawNoModel(entity_render_t *ent);
 522 void R_DrawModels (void)
 523 {
 524         int i;
 525         entity_render_t *ent;
 526
 527         if (!r_drawentities.integer)
 528                 return;
 529
 530         R_DrawViewModel();
 531         for (i = 0;i < r_refdef.numentities;i++)
 532         {
 533                 ent = r_refdef.entities[i];
 534                 if (ent->visframe == r_framecount)
 535                 {
 536                         if (ent->model)
 537                         {
 538                                 if (ent->model->Draw)
 539                                         ent->model->Draw(ent);
 540                         }
 541                         else
 542                                 R_DrawNoModel(ent);
 543                 }
 544         }
 545 }
 546
 547 static void R_SetFrustum (void)
 548 {
 549         int i;
 550
 551         // LordHavoc: note to all quake engine coders, the special case for 90
 552         // degrees assumed a square view (wrong), so I removed it, Quake2 has it
 553         // disabled as well.
 554         // rotate VPN right by FOV_X/2 degrees
 555         RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 556         // rotate VPN left by FOV_X/2 degrees
 557         RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 558         // rotate VPN up by FOV_X/2 degrees
 559         RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 560         // rotate VPN down by FOV_X/2 degrees
 561         RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 562
 563         for (i = 0;i < 4;i++)
 564         {
 565                 frustum[i].type = PLANE_ANYZ;
 566                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 567                 PlaneClassify(&frustum[i]);
 568         }
 569 }
 570
 571 /*
 572 ===============
 573 R_SetupFrame
 574 ===============
 575 */
 576 static void R_SetupFrame (void)
 577 {
 578 // don't allow cheats in multiplayer
 579         if (cl.maxclients > 1)
 580         {
 581                 if (r_fullbright.integer != 0)
 582                         Cvar_Set ("r_fullbright", "0");
 583                 if (r_ambient.value != 0)
 584                         Cvar_Set ("r_ambient", "0");
 585         }
 586
 587         r_framecount++;
 588
 589 // build the transformation matrix for the given view angles
 590         VectorCopy (r_refdef.vieworg, r_origin);
 591
 592         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 593
 594         R_AnimateLight ();
 595 }
 596
 597
 598 static void R_BlendView(void)
 599 {
 600         rmeshstate_t m;
 601         float r;
 602
 603         if (r_refdef.viewblend[3] < 0.01f)
 604                 return;
 605
 606         memset(&m, 0, sizeof(m));
 607         m.blendfunc1 = GL_SRC_ALPHA;
 608         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 609         m.depthdisable = true; // magic
 610         R_Mesh_Matrix(&r_identitymatrix);
 611         R_Mesh_State(&m);
 612
 613         varray_color[0] = varray_color[4] = varray_color[8] = r_refdef.viewblend[0];
 614         varray_color[1] = varray_color[5] = varray_color[9] = r_refdef.viewblend[1];
 615         varray_color[2] = varray_color[6] = varray_color[10] = r_refdef.viewblend[2];
 616         varray_color[3] = varray_color[7] = varray_color[11] = r_refdef.viewblend[3];
 617         r = 64000;
 618         varray_vertex[0] = r_origin[0] + vpn[0] * 1.5 - vright[0] * r - vup[0] * r;
 619         varray_vertex[1] = r_origin[1] + vpn[1] * 1.5 - vright[1] * r - vup[1] * r;
 620         varray_vertex[2] = r_origin[2] + vpn[2] * 1.5 - vright[2] * r - vup[2] * r;
 621         r *= 3;
 622         varray_vertex[4] = varray_vertex[0] + vup[0] * r;
 623         varray_vertex[5] = varray_vertex[1] + vup[1] * r;
 624         varray_vertex[6] = varray_vertex[2] + vup[2] * r;
 625         varray_vertex[8] = varray_vertex[0] + vright[0] * r;
 626         varray_vertex[9] = varray_vertex[1] + vright[1] * r;
 627         varray_vertex[10] = varray_vertex[2] + vright[2] * r;
 628         R_Mesh_Draw(3, 1, polygonelements);
 629 }
 630
 631 /*
 632 ================
 633 R_RenderView
 634
 635 r_refdef must be set before the first call
 636 ================
 637 */
 638 void R_RenderView (void)
 639 {
 640         entity_render_t *world;
 641         if (!r_refdef.entities/* || !cl.worldmodel*/)
 642                 return; //Host_Error ("R_RenderView: NULL worldmodel");
 643
 644         world = &cl_entities[0].render;
 645
 646         // FIXME: move to client
 647         R_MoveExplosions();
 648         R_TimeReport("mexplosion");
 649
 650         R_Textures_Frame();
 651         R_SetupFrame();
 652         R_SetFrustum();
 653         R_SetupFog();
 654         R_SkyStartFrame();
 655         R_BuildLightList();
 656         R_TimeReport("setup");
 657
 658         R_FarClip_Start(r_origin, vpn, 768.0f);
 659         R_MarkEntities();
 660         r_farclip = R_FarClip_Finish() + 256.0f;
 661         R_TimeReport("markentity");
 662
 663         GL_SetupView_ViewPort(r_refdef.x, r_refdef.y, r_refdef.width, r_refdef.height);
 664         GL_SetupView_Mode_Perspective((double) r_refdef.height / r_refdef.width, r_refdef.fov_x, r_refdef.fov_y, 1.0f, r_farclip);
 665         GL_SetupView_Orientation_FromEntity (r_refdef.vieworg, r_refdef.viewangles);
 666         GL_DepthFunc(GL_LEQUAL);
 667
 668         R_Mesh_Start();
 669         R_MeshQueue_BeginScene();
 670
 671         if (R_DrawBrushModelsSky())
 672                 R_TimeReport("bmodelsky");
 673
 674         // must occur early because it can draw sky
 675         R_DrawWorld(world);
 676         R_TimeReport("world");
 677
 678         // don't let sound skip if going slow
 679         if (!intimerefresh && !r_speeds.integer)
 680                 S_ExtraUpdate ();
 681
 682         R_DrawModels();
 683         R_TimeReport("models");
 684
 685         R_DrawParticles();
 686         R_TimeReport("particles");
 687
 688         R_DrawExplosions();
 689         R_TimeReport("explosions");
 690
 691         R_MeshQueue_RenderTransparent();
 692         R_TimeReport("drawtrans");
 693
 694         R_DrawCoronas();
 695         R_TimeReport("coronas");
 696
 697         R_DrawCrosshair();
 698         R_TimeReport("crosshair");
 699
 700         R_BlendView();
 701         R_TimeReport("blendview");
 702
 703         R_MeshQueue_Render();
 704         R_MeshQueue_EndScene();
 705         R_Mesh_Finish();
 706         R_TimeReport("meshfinish");
 707 }
 708
 709 /*
 710 void R_DrawBBoxMesh(vec3_t mins, vec3_t maxs, float cr, float cg, float cb, float ca)
 711 {
 712         int i;
 713         float *v, *c, f1, f2, diff[3];
 714         rmeshstate_t m;
 715         m.blendfunc1 = GL_SRC_ALPHA;
 716         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 717         R_Mesh_Matrix(&r_identitymatrix);
 718         R_Mesh_State(&m);
 719
 720         varray_vertex[ 0] = mins[0];varray_vertex[ 1] = mins[1];varray_vertex[ 2] = mins[2];
 721         varray_vertex[ 4] = maxs[0];varray_vertex[ 5] = mins[1];varray_vertex[ 6] = mins[2];
 722         varray_vertex[ 8] = mins[0];varray_vertex[ 9] = maxs[1];varray_vertex[10] = mins[2];
 723         varray_vertex[12] = maxs[0];varray_vertex[13] = maxs[1];varray_vertex[14] = mins[2];
 724         varray_vertex[16] = mins[0];varray_vertex[17] = mins[1];varray_vertex[18] = maxs[2];
 725         varray_vertex[20] = maxs[0];varray_vertex[21] = mins[1];varray_vertex[22] = maxs[2];
 726         varray_vertex[24] = mins[0];varray_vertex[25] = maxs[1];varray_vertex[26] = maxs[2];
 727         varray_vertex[28] = maxs[0];varray_vertex[29] = maxs[1];varray_vertex[30] = maxs[2];
 728         varray_color[ 0] = varray_color[ 4] = varray_color[ 8] = varray_color[12] = varray_color[16] = varray_color[20] = varray_color[24] = varray_color[28] = cr * r_colorscale;
 729         varray_color[ 1] = varray_color[ 5] = varray_color[ 9] = varray_color[13] = varray_color[17] = varray_color[21] = varray_color[25] = varray_color[29] = cg * r_colorscale;
 730         varray_color[ 2] = varray_color[ 6] = varray_color[10] = varray_color[14] = varray_color[18] = varray_color[22] = varray_color[26] = varray_color[30] = cb * r_colorscale;
 731         varray_color[ 3] = varray_color[ 7] = varray_color[11] = varray_color[15] = varray_color[19] = varray_color[23] = varray_color[27] = varray_color[31] = ca;
 732         if (fogenabled)
 733         {
 734                 for (i = 0, v = varray_vertex, c = varray_color;i < 8;i++, v += 4, c += 4)
 735                 {
 736                         VectorSubtract(v, r_origin, diff);
 737                         f2 = exp(fogdensity/DotProduct(diff, diff));
 738                         f1 = 1 - f2;
 739                         f2 *= r_colorscale;
 740                         c[0] = c[0] * f1 + fogcolor[0] * f2;
 741                         c[1] = c[1] * f1 + fogcolor[1] * f2;
 742                         c[2] = c[2] * f1 + fogcolor[2] * f2;
 743                 }
 744         }
 745         R_Mesh_Draw(8, 12);
 746 }
 747 */
 748
 749 void R_DrawNoModelCallback(const void *calldata1, int calldata2)
 750 {
 751         const entity_render_t *ent = calldata1;
 752         int i, element[24];
 753         float f1, f2, *c, diff[3];
 754         rmeshstate_t m;
 755         memset(&m, 0, sizeof(m));
 756         if (ent->flags & EF_ADDITIVE)
 757         {
 758                 m.blendfunc1 = GL_SRC_ALPHA;
 759                 m.blendfunc2 = GL_ONE;
 760         }
 761         else if (ent->alpha < 1)
 762         {
 763                 m.blendfunc1 = GL_SRC_ALPHA;
 764                 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 765         }
 766         else
 767         {
 768                 m.blendfunc1 = GL_ONE;
 769                 m.blendfunc2 = GL_ZERO;
 770         }
 771         R_Mesh_Matrix(&ent->matrix);
 772         R_Mesh_State(&m);
 773
 774         element[ 0] = 5;element[ 1] = 2;element[ 2] = 0;
 775         element[ 3] = 5;element[ 4] = 1;element[ 5] = 2;
 776         element[ 6] = 5;element[ 7] = 0;element[ 8] = 3;
 777         element[ 9] = 5;element[10] = 3;element[11] = 1;
 778         element[12] = 0;element[13] = 2;element[14] = 4;
 779         element[15] = 2;element[16] = 1;element[17] = 4;
 780         element[18] = 3;element[19] = 0;element[20] = 4;
 781         element[21] = 1;element[22] = 3;element[23] = 4;
 782         varray_vertex[ 0] = -16;varray_vertex[ 1] =   0;varray_vertex[ 2] =   0;
 783         varray_vertex[ 4] =  16;varray_vertex[ 5] =   0;varray_vertex[ 6] =   0;
 784         varray_vertex[ 8] =   0;varray_vertex[ 9] = -16;varray_vertex[10] =   0;
 785         varray_vertex[12] =   0;varray_vertex[13] =  16;varray_vertex[14] =   0;
 786         varray_vertex[16] =   0;varray_vertex[17] =   0;varray_vertex[18] = -16;
 787         varray_vertex[20] =   0;varray_vertex[21] =   0;varray_vertex[22] =  16;
 788         varray_color[ 0] = 0.00f;varray_color[ 1] = 0.00f;varray_color[ 2] = 0.50f;varray_color[ 3] = ent->alpha;
 789         varray_color[ 4] = 0.00f;varray_color[ 5] = 0.00f;varray_color[ 6] = 0.50f;varray_color[ 7] = ent->alpha;
 790         varray_color[ 8] = 0.00f;varray_color[ 9] = 0.50f;varray_color[10] = 0.00f;varray_color[11] = ent->alpha;
 791         varray_color[12] = 0.00f;varray_color[13] = 0.50f;varray_color[14] = 0.00f;varray_color[15] = ent->alpha;
 792         varray_color[16] = 0.50f;varray_color[17] = 0.00f;varray_color[18] = 0.00f;varray_color[19] = ent->alpha;
 793         varray_color[20] = 0.50f;varray_color[21] = 0.00f;varray_color[22] = 0.00f;varray_color[23] = ent->alpha;
 794         if (fogenabled)
 795         {
 796                 VectorSubtract(ent->origin, r_origin, diff);
 797                 f2 = exp(fogdensity/DotProduct(diff, diff));
 798                 f1 = 1 - f2;
 799                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
 800                 {
 801                         c[0] = (c[0] * f1 + fogcolor[0] * f2) * r_colorscale;
 802                         c[1] = (c[1] * f1 + fogcolor[1] * f2) * r_colorscale;
 803                         c[2] = (c[2] * f1 + fogcolor[2] * f2) * r_colorscale;
 804                 }
 805         }
 806         else
 807         {
 808                 for (i = 0, c = varray_color;i < 6;i++, c += 4)
 809                 {
 810                         c[0] *= r_colorscale;
 811                         c[1] *= r_colorscale;
 812                         c[2] *= r_colorscale;
 813                 }
 814         }
 815         R_Mesh_Draw(6, 8, element);
 816 }
 817
 818 void R_DrawNoModel(entity_render_t *ent)
 819 {
 820         //if ((ent->effects & EF_ADDITIVE) || (ent->alpha < 1))
 821                 R_MeshQueue_AddTransparent(ent->origin, R_DrawNoModelCallback, ent, 0);
 822         //else
 823         //      R_DrawNoModelCallback(ent, 0);
 824 }
 825
 826 void R_CalcBeamVerts (float *vert, vec3_t org1, vec3_t org2, float width)
 827 {
 828         vec3_t right1, right2, diff, normal;
 829
 830         VectorSubtract (org2, org1, normal);
 831         VectorNormalizeFast (normal);
 832
 833         // calculate 'right' vector for start
 834         VectorSubtract (r_origin, org1, diff);
 835         VectorNormalizeFast (diff);
 836         CrossProduct (normal, diff, right1);
 837
 838         // calculate 'right' vector for end
 839         VectorSubtract (r_origin, org2, diff);
 840         VectorNormalizeFast (diff);
 841         CrossProduct (normal, diff, right2);
 842
 843         vert[ 0] = org1[0] + width * right1[0];
 844         vert[ 1] = org1[1] + width * right1[1];
 845         vert[ 2] = org1[2] + width * right1[2];
 846         vert[ 4] = org1[0] - width * right1[0];
 847         vert[ 5] = org1[1] - width * right1[1];
 848         vert[ 6] = org1[2] - width * right1[2];
 849         vert[ 8] = org2[0] - width * right2[0];
 850         vert[ 9] = org2[1] - width * right2[1];
 851         vert[10] = org2[2] - width * right2[2];
 852         vert[12] = org2[0] + width * right2[0];
 853         vert[13] = org2[1] + width * right2[1];
 854         vert[14] = org2[2] + width * right2[2];
 855 }