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 //static qboolean       r_cache_thrash;         // compatability
  25
  26 vec3_t          modelorg;
  27 entity_render_t *currentrenderentity;
  28
  29 int                     r_framecount;           // used for dlight push checking
  30
  31 mplane_t        frustum[4];
  32
  33 int                     c_brush_polys, c_alias_polys, c_light_polys, c_faces, c_nodes, c_leafs, c_models, c_bmodels, c_sprites, c_particles, c_dlights;
  34
  35 qboolean        envmap;                         // true during envmap command capture
  36
  37 // LordHavoc: moved all code related to particles into r_part.c
  38 //int                   particletexture;        // little dot for particles
  39 //int                   playertextures;         // up to 16 color translated skins
  40
  41 //
  42 // view origin
  43 //
  44 vec3_t  vup;
  45 vec3_t  vpn;
  46 vec3_t  vright;
  47 vec3_t  r_origin;
  48
  49 //float r_world_matrix[16];
  50 //float r_base_world_matrix[16];
  51
  52 //
  53 // screen size info
  54 //
  55 refdef_t        r_refdef;
  56
  57 mleaf_t         *r_viewleaf, *r_oldviewleaf;
  58
  59 unsigned short  d_lightstylevalue[256]; // 8.8 fraction of base light value
  60
  61 //cvar_t        r_norefresh = {0, "r_norefresh","0"};
  62 cvar_t  r_drawentities = {0, "r_drawentities","1"};
  63 cvar_t  r_drawviewmodel = {0, "r_drawviewmodel","1"};
  64 cvar_t  r_speeds = {0, "r_speeds","0"};
  65 cvar_t  r_speeds2 = {0, "r_speeds2","0"};
  66 cvar_t  r_fullbright = {0, "r_fullbright","0"};
  67 //cvar_t        r_lightmap = {0, "r_lightmap","0"};
  68 cvar_t  r_wateralpha = {CVAR_SAVE, "r_wateralpha","1"};
  69 cvar_t  r_dynamic = {CVAR_SAVE, "r_dynamic","1"};
  70 cvar_t  r_waterripple = {CVAR_SAVE, "r_waterripple","0"};
  71 cvar_t  r_fullbrights = {CVAR_SAVE, "r_fullbrights", "1"};
  72
  73 cvar_t  gl_lightmode = {CVAR_SAVE, "gl_lightmode", "1"}; // LordHavoc: overbright lighting
  74 //cvar_t        r_dynamicbothsides = {CVAR_SAVE, "r_dynamicbothsides", "1"}; // LordHavoc: can disable dynamic lighting of backfaces, but quake maps are weird so it doesn't always work right...
  75 cvar_t  r_farclip = {0, "r_farclip", "6144"}; // FIXME: make this go away (calculate based on farthest visible object/polygon)
  76
  77 cvar_t  gl_fogenable = {0, "gl_fogenable", "0"};
  78 cvar_t  gl_fogdensity = {0, "gl_fogdensity", "0.25"};
  79 cvar_t  gl_fogred = {0, "gl_fogred","0.3"};
  80 cvar_t  gl_foggreen = {0, "gl_foggreen","0.3"};
  81 cvar_t  gl_fogblue = {0, "gl_fogblue","0.3"};
  82 cvar_t  gl_fogstart = {0, "gl_fogstart", "0"};
  83 cvar_t  gl_fogend = {0, "gl_fogend","0"};
  84 cvar_t  glfog = {0, "glfog", "0"};
  85
  86 cvar_t  r_ser = {CVAR_SAVE, "r_ser", "1"};
  87 cvar_t  gl_viewmodeldepthhack = {0, "gl_viewmodeldepthhack", "1"};
  88
  89 int R_VisibleCullBox (vec3_t mins, vec3_t maxs)
  90 {
  91         int sides;
  92         mnode_t *nodestack[8192], *node;
  93         int stack = 0;
  94
  95         if (R_CullBox(mins, maxs))
  96                 return true;
  97
  98         node = cl.worldmodel->nodes;
  99 loc0:
 100         if (node->contents < 0)
 101         {
 102                 if (((mleaf_t *)node)->visframe == r_framecount)
 103                         return false;
 104                 if (!stack)
 105                         return true;
 106                 node = nodestack[--stack];
 107                 goto loc0;
 108         }
 109
 110         sides = BOX_ON_PLANE_SIDE(mins, maxs, node->plane);
 111
 112 // recurse down the contacted sides
 113         if (sides & 1)
 114         {
 115                 if (sides & 2) // 3
 116                 {
 117                         // put second child on the stack for later examination
 118                         nodestack[stack++] = node->children[1];
 119                         node = node->children[0];
 120                         goto loc0;
 121                 }
 122                 else // 1
 123                 {
 124                         node = node->children[0];
 125                         goto loc0;
 126                 }
 127         }
 128         // 2
 129         node = node->children[1];
 130         goto loc0;
 131 }
 132
 133 qboolean lighthalf;
 134
 135 vec3_t fogcolor;
 136 vec_t fogdensity;
 137 float fog_density, fog_red, fog_green, fog_blue;
 138 qboolean fogenabled;
 139 qboolean oldgl_fogenable;
 140 void FOG_framebegin(void)
 141 {
 142         if (gamemode == GAME_NEHAHRA)
 143         {
 144                 if (gl_fogenable.value)
 145                 {
 146                         oldgl_fogenable = true;
 147                         fog_density = gl_fogdensity.value;
 148                         fog_red = gl_fogred.value;
 149                         fog_green = gl_foggreen.value;
 150                         fog_blue = gl_fogblue.value;
 151                 }
 152                 else if (oldgl_fogenable)
 153                 {
 154                         oldgl_fogenable = false;
 155                         fog_density = 0;
 156                         fog_red = 0;
 157                         fog_green = 0;
 158                         fog_blue = 0;
 159                 }
 160         }
 161         if (fog_density)
 162         {
 163                         fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 164                         fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 165                         fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 166                         if (lighthalf)
 167                         {
 168                                 fogcolor[0] *= 0.5f;
 169                                 fogcolor[1] *= 0.5f;
 170                                 fogcolor[2] *= 0.5f;
 171                         }
 172         }
 173         if (glfog.value)
 174         {
 175                 if (!r_render.value)
 176                         return;
 177                 if(fog_density)
 178                 {
 179                         // LordHavoc: Borland C++ 5.0 was choking on this line...
 180                         //GLfloat colors[4] = {(GLfloat) gl_fogred.value, (GLfloat) gl_foggreen.value, (GLfloat) gl_fogblue.value, (GLfloat) 1};
 181                         GLfloat colors[4];
 182                         colors[0] = fog_red;
 183                         colors[1] = fog_green;
 184                         colors[2] = fog_blue;
 185                         colors[3] = 1;
 186                         if (lighthalf)
 187                         {
 188                                 colors[0] *= 0.5f;
 189                                 colors[1] *= 0.5f;
 190                                 colors[2] *= 0.5f;
 191                         }
 192
 193                         glFogi (GL_FOG_MODE, GL_EXP2);
 194                         glFogf (GL_FOG_DENSITY, (GLfloat) fog_density / 100);
 195                         glFogfv (GL_FOG_COLOR, colors);
 196                         glEnable (GL_FOG);
 197                 }
 198                 else
 199                         glDisable(GL_FOG);
 200         }
 201         else
 202         {
 203                 if (fog_density)
 204                 {
 205                         fogenabled = true;
 206                         fogdensity = -4000.0f / (fog_density * fog_density);
 207                         // fog color was already set
 208                 }
 209                 else
 210                         fogenabled = false;
 211         }
 212 }
 213
 214 void FOG_frameend(void)
 215 {
 216         if (glfog.value)
 217                 glDisable(GL_FOG);
 218 }
 219
 220 void FOG_clear(void)
 221 {
 222         if (gamemode == GAME_NEHAHRA)
 223         {
 224                 Cvar_Set("gl_fogenable", "0");
 225                 Cvar_Set("gl_fogdensity", "0.2");
 226                 Cvar_Set("gl_fogred", "0.3");
 227                 Cvar_Set("gl_foggreen", "0.3");
 228                 Cvar_Set("gl_fogblue", "0.3");
 229         }
 230         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 231 }
 232
 233 void FOG_registercvars(void)
 234 {
 235         Cvar_RegisterVariable (&glfog);
 236         if (gamemode == GAME_NEHAHRA)
 237         {
 238                 Cvar_RegisterVariable (&gl_fogenable);
 239                 Cvar_RegisterVariable (&gl_fogdensity);
 240                 Cvar_RegisterVariable (&gl_fogred);
 241                 Cvar_RegisterVariable (&gl_foggreen);
 242                 Cvar_RegisterVariable (&gl_fogblue);
 243                 Cvar_RegisterVariable (&gl_fogstart);
 244                 Cvar_RegisterVariable (&gl_fogend);
 245         }
 246 }
 247
 248 void gl_main_start(void)
 249 {
 250 }
 251
 252 void gl_main_shutdown(void)
 253 {
 254 }
 255
 256 void gl_main_newmap(void)
 257 {
 258 }
 259
 260 void GL_Main_Init(void)
 261 {
 262         FOG_registercvars();
 263         Cvar_RegisterVariable (&r_drawentities);
 264         Cvar_RegisterVariable (&r_drawviewmodel);
 265         Cvar_RegisterVariable (&r_speeds);
 266         Cvar_RegisterVariable (&r_speeds2);
 267         Cvar_RegisterVariable (&gl_lightmode);
 268 //      Cvar_RegisterVariable (&r_dynamicwater);
 269 //      Cvar_RegisterVariable (&r_dynamicbothsides);
 270         Cvar_RegisterVariable (&r_fullbrights);
 271         Cvar_RegisterVariable (&r_wateralpha);
 272         Cvar_RegisterVariable (&r_dynamic);
 273         Cvar_RegisterVariable (&r_waterripple);
 274         Cvar_RegisterVariable (&r_farclip);
 275         Cvar_RegisterVariable (&r_fullbright);
 276         Cvar_RegisterVariable (&r_ser);
 277         Cvar_RegisterVariable (&gl_viewmodeldepthhack);
 278         if (gamemode == GAME_NEHAHRA)
 279                 Cvar_SetValue("r_fullbrights", 0);
 280         R_RegisterModule("GL_Main", gl_main_start, gl_main_shutdown, gl_main_newmap);
 281 }
 282
 283 extern void GL_Draw_Init(void);
 284 extern void GL_Main_Init(void);
 285 extern void GL_Models_Init(void);
 286 extern void GL_Poly_Init(void);
 287 extern void GL_Surf_Init(void);
 288 extern void GL_Screen_Init(void);
 289 extern void GL_Misc_Init(void);
 290 extern void R_Crosshairs_Init(void);
 291 extern void R_Light_Init(void);
 292 extern void R_Particles_Init(void);
 293 extern void R_Explosion_Init(void);
 294 extern void CL_Effects_Init(void);
 295 extern void R_Clip_Init(void);
 296 extern void ui_init(void);
 297
 298 void Render_Init(void)
 299 {
 300         R_Modules_Shutdown();
 301         R_Clip_Init();
 302         GL_Draw_Init();
 303         GL_Main_Init();
 304         GL_Models_Init();
 305         GL_Poly_Init();
 306         GL_Surf_Init();
 307         GL_Screen_Init();
 308         GL_Misc_Init();
 309         R_Crosshairs_Init();
 310         R_Light_Init();
 311         R_Particles_Init();
 312         R_Explosion_Init();
 313         CL_Effects_Init();
 314         R_Decals_Init();
 315         ui_init();
 316         R_Modules_Start();
 317 }
 318
 319 /*
 320 ===============
 321 GL_Init
 322 ===============
 323 */
 324 extern char *ENGINE_EXTENSIONS;
 325 void GL_Init (void)
 326 {
 327         gl_vendor = glGetString (GL_VENDOR);
 328         Con_Printf ("GL_VENDOR: %s\n", gl_vendor);
 329         gl_renderer = glGetString (GL_RENDERER);
 330         Con_Printf ("GL_RENDERER: %s\n", gl_renderer);
 331
 332         gl_version = glGetString (GL_VERSION);
 333         Con_Printf ("GL_VERSION: %s\n", gl_version);
 334         gl_extensions = glGetString (GL_EXTENSIONS);
 335         Con_Printf ("GL_EXTENSIONS: %s\n", gl_extensions);
 336
 337 //      Con_Printf ("%s %s\n", gl_renderer, gl_version);
 338
 339 //      VID_CheckMultitexture();
 340 //      VID_CheckCVA();
 341 //      VID_CheckCombine();
 342         VID_CheckExtensions();
 343
 344         // LordHavoc: report supported extensions
 345         Con_Printf ("\nengine extensions: %s\n", ENGINE_EXTENSIONS);
 346
 347         glCullFace(GL_FRONT);
 348         glEnable(GL_TEXTURE_2D);
 349 //      glDisable(GL_ALPHA_TEST);
 350         glAlphaFunc(GL_GREATER, 0.5);
 351
 352 //      glPolygonMode (GL_FRONT_AND_BACK, GL_FILL);
 353 }
 354
 355
 356 //==================================================================================
 357
 358 void R_Entity_Callback(void *data, void *junk)
 359 {
 360         ((entity_render_t *)data)->visframe = r_framecount;
 361 }
 362
 363 static void R_AddModelEntities (void)
 364 {
 365         int             i;
 366         vec3_t  v;
 367
 368         if (!r_drawentities.value)
 369                 return;
 370
 371         for (i = 0;i < cl_numvisedicts;i++)
 372         {
 373                 currentrenderentity = &cl_visedicts[i]->render;
 374
 375                 // move view-relative models to where they should be
 376                 if (currentrenderentity->flags & RENDER_VIEWMODEL)
 377                 {
 378                         // remove flag so it will not be repeated incase RelinkEntities is not called again for a while
 379                         currentrenderentity->flags -= RENDER_VIEWMODEL;
 380                         // transform origin
 381                         VectorCopy(currentrenderentity->origin, v);
 382                         currentrenderentity->origin[0] = v[0] * vpn[0] + v[1] * vright[0] + v[2] * vup[0] + r_origin[0];
 383                         currentrenderentity->origin[1] = v[0] * vpn[1] + v[1] * vright[1] + v[2] * vup[1] + r_origin[1];
 384                         currentrenderentity->origin[2] = v[0] * vpn[2] + v[1] * vright[2] + v[2] * vup[2] + r_origin[2];
 385                         // adjust angles
 386                         VectorAdd(currentrenderentity->angles, r_refdef.viewangles, currentrenderentity->angles);
 387                 }
 388
 389                 if (currentrenderentity->angles[0] || currentrenderentity->angles[2])
 390                 {
 391                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmins, currentrenderentity->mins);
 392                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->rotatedmaxs, currentrenderentity->maxs);
 393                 }
 394                 else if (currentrenderentity->angles[1])
 395                 {
 396                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmins, currentrenderentity->mins);
 397                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->yawmaxs, currentrenderentity->maxs);
 398                 }
 399                 else
 400                 {
 401                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmins, currentrenderentity->mins);
 402                         VectorMA(currentrenderentity->origin, currentrenderentity->scale, currentrenderentity->model->normalmaxs, currentrenderentity->maxs);
 403                 }
 404                 if (R_VisibleCullBox(currentrenderentity->mins, currentrenderentity->maxs))
 405                         continue;
 406
 407                 R_LerpAnimation(currentrenderentity);
 408                 if (r_ser.value)
 409                         currentrenderentity->model->SERAddEntity();
 410                 else
 411                         currentrenderentity->visframe = r_framecount;
 412         }
 413 }
 414
 415 void R_DrawModels1 (void)
 416 {
 417         int             i;
 418
 419         if (!r_drawentities.value)
 420                 return;
 421
 422         for (i = 0;i < cl_numvisedicts;i++)
 423         {
 424                 currentrenderentity = &cl_visedicts[i]->render;
 425                 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->DrawEarly)
 426                         currentrenderentity->model->DrawEarly();
 427         }
 428 }
 429
 430 void R_DrawModels2 (void)
 431 {
 432         int             i;
 433
 434         if (!r_drawentities.value)
 435                 return;
 436
 437         for (i = 0;i < cl_numvisedicts;i++)
 438         {
 439                 currentrenderentity = &cl_visedicts[i]->render;
 440                 if (currentrenderentity->visframe == r_framecount && currentrenderentity->model->DrawLate)
 441                         currentrenderentity->model->DrawLate();
 442         }
 443 }
 444
 445 /*
 446 =============
 447 R_DrawViewModel
 448 =============
 449 */
 450 void R_DrawViewModel (void)
 451 {
 452         if (!r_drawviewmodel.value || chase_active.value || envmap || !r_drawentities.value || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.render.model)
 453                 return;
 454
 455         currentrenderentity = &cl.viewent.render;
 456
 457         R_LerpAnimation(currentrenderentity);
 458
 459         // hack the depth range to prevent view model from poking into walls
 460         if (gl_viewmodeldepthhack.value)
 461                 glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
 462         currentrenderentity->model->DrawLate();
 463         if (gl_viewmodeldepthhack.value)
 464                 glDepthRange (gldepthmin, gldepthmax);
 465 }
 466
 467 static void R_SetFrustum (void)
 468 {
 469         int             i;
 470
 471         // LordHavoc: note to all quake engine coders, this code was making the
 472         // view frustum taller than it should have been (it assumed the view is
 473         // square; it is not square), so I disabled it
 474         /*
 475         if (r_refdef.fov_x == 90)
 476         {
 477                 // front side is visible
 478
 479                 VectorAdd (vpn, vright, frustum[0].normal);
 480                 VectorSubtract (vpn, vright, frustum[1].normal);
 481
 482                 VectorAdd (vpn, vup, frustum[2].normal);
 483                 VectorSubtract (vpn, vup, frustum[3].normal);
 484         }
 485         else
 486         {
 487         */
 488                 // rotate VPN right by FOV_X/2 degrees
 489                 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
 490                 // rotate VPN left by FOV_X/2 degrees
 491                 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
 492                 // rotate VPN up by FOV_X/2 degrees
 493                 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
 494                 // rotate VPN down by FOV_X/2 degrees
 495                 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
 496         //}
 497
 498         for (i=0 ; i<4 ; i++)
 499         {
 500                 frustum[i].type = PLANE_ANYZ;
 501                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
 502 //              frustum[i].signbits = SignbitsForPlane (&frustum[i]);
 503                 PlaneClassify(&frustum[i]);
 504         }
 505 }
 506
 507 /*
 508 ===============
 509 R_SetupFrame
 510 ===============
 511 */
 512 static void R_SetupFrame (void)
 513 {
 514 // don't allow cheats in multiplayer
 515         if (cl.maxclients > 1)
 516         {
 517                 if (r_fullbright.value != 0)
 518                         Cvar_Set ("r_fullbright", "0");
 519                 if (r_ambient.value != 0)
 520                         Cvar_Set ("r_ambient", "0");
 521         }
 522
 523         r_framecount++;
 524
 525 // build the transformation matrix for the given view angles
 526         VectorCopy (r_refdef.vieworg, r_origin);
 527
 528         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
 529
 530 // current viewleaf
 531         r_oldviewleaf = r_viewleaf;
 532         r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
 533
 534         V_SetContentsColor (r_viewleaf->contents);
 535         V_CalcBlend ();
 536
 537 //      r_cache_thrash = false;
 538
 539         c_brush_polys = 0;
 540         c_alias_polys = 0;
 541         c_light_polys = 0;
 542         c_faces = 0;
 543         c_nodes = 0;
 544         c_leafs = 0;
 545         c_models = 0;
 546         c_bmodels = 0;
 547         c_sprites = 0;
 548         c_particles = 0;
 549 //      c_dlights = 0;
 550
 551         R_AnimateLight ();
 552 }
 553
 554
 555 static void MYgluPerspective(GLdouble fovx, GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar )
 556 {
 557         GLdouble xmax, ymax;
 558
 559         xmax = zNear * tan( fovx * M_PI / 360.0 ) * aspect;
 560         ymax = zNear * tan( fovy * M_PI / 360.0 );
 561
 562         if (r_viewleaf->contents != CONTENTS_EMPTY && r_viewleaf->contents != CONTENTS_SOLID)
 563         {
 564                 xmax *= (sin(cl.time * 4.7) * 0.03 + 0.97);
 565                 ymax *= (sin(cl.time * 3) * 0.03 + 0.97);
 566         }
 567
 568         glFrustum(-xmax, xmax, -ymax, ymax, zNear, zFar );
 569 }
 570
 571
 572 /*
 573 =============
 574 R_SetupGL
 575 =============
 576 */
 577 static void R_SetupGL (void)
 578 {
 579         if (!r_render.value)
 580                 return;
 581
 582         // set up viewpoint
 583         glMatrixMode(GL_PROJECTION);
 584         glLoadIdentity ();
 585
 586         // y is weird beause OpenGL is bottom to top, we use top to bottom
 587         glViewport(r_refdef.x, vid.realheight - (r_refdef.y + r_refdef.height), r_refdef.width, r_refdef.height);
 588 //      yfov = 2*atan((float)r_refdef.height/r_refdef.width)*180/M_PI;
 589         MYgluPerspective (r_refdef.fov_x, r_refdef.fov_y, r_refdef.width/r_refdef.height, 4, r_farclip.value);
 590
 591         glCullFace(GL_FRONT);
 592
 593         glMatrixMode(GL_MODELVIEW);
 594         glLoadIdentity ();
 595
 596         glRotatef (-90,  1, 0, 0);          // put Z going up
 597         glRotatef (90,  0, 0, 1);           // put Z going up
 598         glRotatef (-r_refdef.viewangles[2],  1, 0, 0);
 599         glRotatef (-r_refdef.viewangles[0],  0, 1, 0);
 600         glRotatef (-r_refdef.viewangles[1],  0, 0, 1);
 601         glTranslatef (-r_refdef.vieworg[0],  -r_refdef.vieworg[1],  -r_refdef.vieworg[2]);
 602
 603 //      glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix);
 604
 605         //
 606         // set drawing parms
 607         //
 608 //      if (gl_cull.value)
 609                 glEnable(GL_CULL_FACE);
 610 //      else
 611 //              glDisable(GL_CULL_FACE);
 612
 613         glEnable(GL_BLEND); // was Disable
 614         glDisable(GL_ALPHA_TEST);
 615         glAlphaFunc(GL_GREATER, 0.5);
 616         glEnable(GL_DEPTH_TEST);
 617         glDepthMask(1);
 618         glShadeModel(GL_SMOOTH);
 619 }
 620
 621 /*
 622 =============
 623 R_Clear
 624 =============
 625 */
 626 static void R_Clear (void)
 627 {
 628         if (!r_render.value)
 629                 return;
 630 //      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // LordHavoc: moved to SCR_UpdateScreen
 631         gldepthmin = 0;
 632         gldepthmax = 1;
 633         glDepthFunc (GL_LEQUAL);
 634
 635         glDepthRange (gldepthmin, gldepthmax);
 636 }
 637
 638 static void GL_BlendView(void)
 639 {
 640         if (!r_render.value)
 641                 return;
 642
 643         if (v_blend[3] < 0.01f)
 644                 return;
 645
 646         glMatrixMode(GL_PROJECTION);
 647     glLoadIdentity ();
 648         glOrtho  (0, 256, 256, 0, -99999, 99999);
 649         glMatrixMode(GL_MODELVIEW);
 650     glLoadIdentity ();
 651         glDisable (GL_DEPTH_TEST);
 652         glDisable (GL_CULL_FACE);
 653         glDisable(GL_TEXTURE_2D);
 654         glEnable(GL_BLEND);
 655         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 656         glBegin (GL_TRIANGLES);
 657         if (lighthalf)
 658                 glColor4f (v_blend[0] * 0.5f, v_blend[1] * 0.5f, v_blend[2] * 0.5f, v_blend[3]);
 659         else
 660                 glColor4fv (v_blend);
 661         glVertex2f (-5000, -5000);
 662         glVertex2f (10000, -5000);
 663         glVertex2f (-5000, 10000);
 664         glEnd ();
 665
 666         glEnable (GL_CULL_FACE);
 667         glEnable (GL_DEPTH_TEST);
 668         glDisable(GL_BLEND);
 669         glEnable(GL_TEXTURE_2D);
 670 }
 671
 672 /*
 673 ================
 674 R_RenderView
 675
 676 r_refdef must be set before the first call
 677 ================
 678 */
 679 extern void UploadLightmaps(void);
 680 extern void R_DrawSurfaces(void);
 681 extern void R_DrawPortals(void);
 682 char r_speeds2_string[1024];
 683 int speedstringcount;
 684
 685 void timestring(int t, char *desc)
 686 {
 687         char tempbuf[256];
 688         int length;
 689         if (t < 1000000)
 690                 sprintf(tempbuf, " %6ius %s", t, desc);
 691         else
 692                 sprintf(tempbuf, " %6ims %s", t / 1000, desc);
 693         length = strlen(tempbuf);
 694 //      while (length < 20)
 695 //              tempbuf[length++] = ' ';
 696 //      tempbuf[length] = 0;
 697         if (speedstringcount + length > 80)
 698         {
 699                 strcat(r_speeds2_string, "\n");
 700                 speedstringcount = 0;
 701         }
 702         // skip the space at the beginning if it's the first on the line
 703         if (speedstringcount == 0)
 704         {
 705                 strcat(r_speeds2_string, tempbuf + 1);
 706                 speedstringcount = length - 1;
 707         }
 708         else
 709         {
 710                 strcat(r_speeds2_string, tempbuf);
 711                 speedstringcount += length;
 712         }
 713 }
 714
 715 #define TIMEREPORT(NAME) \
 716         if (r_speeds2.value)\
 717         {\
 718                 temptime = currtime;\
 719                 currtime = Sys_DoubleTime();\
 720                 timestring((int) ((currtime - temptime) * 1000000.0), NAME);\
 721         }
 722
 723 void R_RenderView (void)
 724 {
 725         double starttime, currtime, temptime;
 726
 727         if (!cl.worldmodel)
 728                 Host_Error ("R_RenderView: NULL worldmodel");
 729
 730         if (r_speeds2.value)
 731         {
 732                 speedstringcount = 0;
 733                 sprintf(r_speeds2_string, "org:'%c%6.2f %c%6.2f %c%6.2f' ang:'%c%3.0f %c%3.0f %c%3.0f' dir:'%c%2.3f %c%2.3f %c%2.3f'\n%6i walls %6i dlitwalls %7i modeltris %7i transpoly\nBSP: %6i faces %6i nodes %6i leafs\n%4i models %4i bmodels %4i sprites %5i particles %3i dlights\n",
 734                         r_origin[0] < 0 ? '-' : ' ', fabs(r_origin[0]), r_origin[1] < 0 ? '-' : ' ', fabs(r_origin[1]), r_origin[2] < 0 ? '-' : ' ', fabs(r_origin[2]), r_refdef.viewangles[0] < 0 ? '-' : ' ', fabs(r_refdef.viewangles[0]), r_refdef.viewangles[1] < 0 ? '-' : ' ', fabs(r_refdef.viewangles[1]), r_refdef.viewangles[2] < 0 ? '-' : ' ', fabs(r_refdef.viewangles[2]), vpn[0] < 0 ? '-' : ' ', fabs(vpn[0]), vpn[1] < 0 ? '-' : ' ', fabs(vpn[1]), vpn[2] < 0 ? '-' : ' ', fabs(vpn[2]),
 735                         c_brush_polys, c_light_polys, c_alias_polys, currenttranspoly,
 736                         c_faces, c_nodes, c_leafs,
 737                         c_models, c_bmodels, c_sprites, c_particles, c_dlights);
 738
 739                 starttime = currtime = Sys_DoubleTime();
 740         }
 741         else
 742                 starttime = currtime = 0;
 743
 744         R_MoveParticles ();
 745         TIMEREPORT("mparticles")
 746         R_MoveExplosions();
 747         TIMEREPORT("mexplosion")
 748
 749         FOG_framebegin();
 750
 751         R_Clear();
 752         TIMEREPORT("clear     ")
 753
 754         // render normal view
 755
 756         R_SetupFrame ();
 757         R_SetFrustum ();
 758         R_SetupGL ();
 759         R_Clip_StartFrame();
 760
 761         skypolyclear();
 762         wallpolyclear();
 763         transpolyclear();
 764
 765         TIMEREPORT("setup     ")
 766
 767         R_DrawWorld ();
 768         TIMEREPORT("addworld  ")
 769
 770         R_AddModelEntities();
 771         TIMEREPORT("addmodels ")
 772
 773         R_Clip_EndFrame();
 774         TIMEREPORT("scanedge  ")
 775
 776         // now mark the lit surfaces
 777         R_PushDlights ();
 778         TIMEREPORT("marklights")
 779
 780         R_DrawModels1 ();
 781
 782         // yes this does add the world after the brush models when using the SER
 783         R_DrawSurfaces ();
 784         R_DrawPortals ();
 785         TIMEREPORT("surfaces  ");
 786
 787         UploadLightmaps();
 788         TIMEREPORT("uploadlmap")
 789
 790         skypolyrender();
 791         TIMEREPORT("skypoly   ")
 792
 793         wallpolyrender1();
 794         TIMEREPORT("wallpoly1 ")
 795
 796         GL_DrawDecals();
 797         TIMEREPORT("ddecal    ")
 798
 799         wallpolyrender2();
 800         TIMEREPORT("wallpoly2 ")
 801
 802         // don't let sound skip if going slow
 803         if (!intimerefresh && !r_speeds2.value)
 804                 S_ExtraUpdate ();
 805
 806         R_DrawViewModel ();
 807         R_DrawModels2 ();
 808         TIMEREPORT("models    ")
 809
 810         R_DrawParticles ();
 811         TIMEREPORT("dparticles")
 812
 813         R_DrawExplosions();
 814         TIMEREPORT("dexplosion")
 815
 816         transpolyrender();
 817         TIMEREPORT("transpoly ")
 818
 819         FOG_frameend();
 820
 821         GL_BlendView();
 822         TIMEREPORT("blend     ")
 823
 824         if (r_speeds2.value)
 825                 timestring((int) ((Sys_DoubleTime() - starttime) * 1000000.0), "total    ");
 826 }