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 entity_t        r_worldentity;
  25
  26 qboolean        r_cache_thrash;         // compatability
  27
  28 vec3_t          modelorg, r_entorigin;
  29 entity_t        *currententity;
  30
  31 int                     r_visframecount;        // bumped when going to a new PVS
  32 int                     r_framecount;           // used for dlight push checking
  33
  34 mplane_t        frustum[4];
  35
  36 int                     c_brush_polys, c_alias_polys;
  37
  38 qboolean        envmap;                         // true during envmap command capture
  39
  40 // LordHavoc: moved all code related to particles into r_part.c
  41 //int                   particletexture;        // little dot for particles
  42 int                     playertextures;         // up to 16 color translated skins
  43
  44 extern qboolean isG200, isRagePro; // LordHavoc: special card hacks
  45
  46 //
  47 // view origin
  48 //
  49 vec3_t  vup;
  50 vec3_t  vpn;
  51 vec3_t  vright;
  52 vec3_t  r_origin;
  53
  54 float   r_world_matrix[16];
  55 float   r_base_world_matrix[16];
  56
  57 //
  58 // screen size info
  59 //
  60 refdef_t        r_refdef;
  61
  62 mleaf_t         *r_viewleaf, *r_oldviewleaf;
  63
  64 texture_t       *r_notexture_mip;
  65
  66 int             d_lightstylevalue[256]; // 8.8 fraction of base light value
  67
  68
  69 void R_MarkLeaves (void);
  70
  71 //cvar_t        r_norefresh = {"r_norefresh","0"};
  72 cvar_t  r_drawentities = {"r_drawentities","1"};
  73 cvar_t  r_drawviewmodel = {"r_drawviewmodel","1"};
  74 cvar_t  r_speeds = {"r_speeds","0"};
  75 cvar_t  r_speeds2 = {"r_speeds2","0"};
  76 cvar_t  r_fullbright = {"r_fullbright","0"};
  77 //cvar_t        r_lightmap = {"r_lightmap","0"};
  78 cvar_t  r_shadows = {"r_shadows","0"};
  79 cvar_t  r_wateralpha = {"r_wateralpha","1"};
  80 cvar_t  r_dynamic = {"r_dynamic","1"};
  81 cvar_t  r_novis = {"r_novis","0"};
  82 cvar_t  r_waterripple = {"r_waterripple","0"};
  83 cvar_t  r_fullbrights = {"r_fullbrights", "1"};
  84
  85 //cvar_t        gl_cull = {"gl_cull","1"};
  86 //cvar_t        gl_affinemodels = {"gl_affinemodels","0"};
  87 //cvar_t        gl_polyblend = {"gl_polyblend","1"};
  88 //cvar_t        gl_flashblend = {"gl_flashblend","0"};
  89 cvar_t  gl_playermip = {"gl_playermip","0"};
  90 //cvar_t        gl_nocolors = {"gl_nocolors","0"};
  91 //cvar_t        gl_keeptjunctions = {"gl_keeptjunctions","1"};
  92 //cvar_t        gl_reporttjunctions = {"gl_reporttjunctions","0"};
  93 cvar_t  contrast = {"contrast", "1.0", TRUE}; // LordHavoc: a method of operating system independent color correction
  94 cvar_t  brightness = {"brightness", "1.0", TRUE}; // LordHavoc: a method of operating system independent color correction
  95 cvar_t  gl_lightmode = {"gl_lightmode", "1", TRUE}; // LordHavoc: overbright lighting
  96 //cvar_t        r_dynamicwater = {"r_dynamicwater", "1"};
  97 //cvar_t        r_dynamicbothsides = {"r_dynamicbothsides", "1"}; // LordHavoc: can disable dynamic lighting of backfaces, but quake maps are weird so it doesn't always work right...
  98 cvar_t  r_farclip = {"r_farclip", "6144"};
  99
 100 cvar_t  gl_fogenable = {"gl_fogenable", "0"};
 101 cvar_t  gl_fogdensity = {"gl_fogdensity", "0.25"};
 102 cvar_t  gl_fogred = {"gl_fogred","0.3"};
 103 cvar_t  gl_foggreen = {"gl_foggreen","0.3"};
 104 cvar_t  gl_fogblue = {"gl_fogblue","0.3"};
 105 cvar_t  gl_fogstart = {"gl_fogstart", "0"};
 106 cvar_t  gl_fogend = {"gl_fogend","0"};
 107 cvar_t  glfog = {"glfog", "0"};
 108
 109 int chrometexture;
 110
 111 void makechrometextures()
 112 {
 113         int x, y, g, g2, amplitude, noise[64][64], min, max;
 114         byte data[64][64][4];
 115         //
 116         // particle texture
 117         //
 118         chrometexture = texture_extension_number++;
 119     glBindTexture(GL_TEXTURE_2D, chrometexture);
 120
 121 #define n(x,y) noise[(y)&63][(x)&63]
 122
 123         amplitude = 16777215;
 124         g2 = 64;
 125         noise[0][0] = 0;
 126         for (;(g = g2 >> 1) >= 1;g2 >>= 1)
 127         {
 128                 // subdivide, diamond-square algorythm (really this has little to do with squares)
 129                 // diamond
 130                 for (y = 0;y < 64;y += g2)
 131                         for (x = 0;x < 64;x += g2)
 132                                 n(x+g,y+g) = (n(x,y) + n(x+g2,y) + n(x,y+g2) + n(x+g2,y+g2)) >> 2;
 133                 // square
 134                 for (y = 0;y < 64;y += g2)
 135                         for (x = 0;x < 64;x += g2)
 136                         {
 137                                 n(x+g,y) = (n(x,y) + n(x+g2,y) + n(x+g,y-g) + n(x+g,y+g)) >> 2;
 138                                 n(x,y+g) = (n(x,y) + n(x,y+g2) + n(x-g,y+g) + n(x+g,y+g)) >> 2;
 139                         }
 140                 // brownian motion theory
 141                 amplitude >>= 1;
 142                 for (y = 0;y < 64;y += g)
 143                         for (x = 0;x < 64;x += g)
 144                                 noise[y][x] += rand()&amplitude;
 145         }
 146         // normalize the noise range
 147         min = max = 0;
 148         for (y = 0;y < 64;y++)
 149                 for (x = 0;x < 64;x++)
 150                 {
 151                         if (n(x,y) < min) min = n(x,y);
 152                         if (n(x,y) > max) max = n(x,y);
 153                 }
 154         max -= min;
 155         for (y = 0;y < 64;y++)
 156                 for (x = 0;x < 64;x++)
 157                         n(x,y) = (n(x,y) - min) * 255 / max;
 158
 159 #undef n
 160
 161         // convert to RGBA data
 162         for (y = 0;y < 64;y++)
 163                 for (x = 0;x < 64;x++)
 164                 {
 165                         data[y][x][0] = data[y][x][1] = data[y][x][2] = (byte) noise[y][x];
 166                         data[y][x][3] = 255;
 167                 }
 168
 169         glTexImage2D (GL_TEXTURE_2D, 0, 4, 64, 64, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
 170
 171         glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 172
 173         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 174         glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
 175 }
 176
 177 extern qboolean isRagePro;
 178
 179 qboolean lighthalf;
 180
 181 vec3_t fogcolor;
 182 vec_t fogdensity;
 183 float fog_density, fog_red, fog_green, fog_blue;
 184 qboolean fogenabled;
 185 qboolean oldgl_fogenable;
 186 void FOG_framebegin()
 187 {
 188         if (nehahra)
 189         {
 190 //              if (!Nehahrademcompatibility)
 191 //                      gl_fogenable.value = 0;
 192                 if (gl_fogenable.value)
 193                 {
 194                         oldgl_fogenable = true;
 195                         fog_density = gl_fogdensity.value;
 196                         fog_red = gl_fogred.value;
 197                         fog_green = gl_foggreen.value;
 198                         fog_blue = gl_fogblue.value;
 199                 }
 200                 else if (oldgl_fogenable)
 201                 {
 202                         oldgl_fogenable = false;
 203                         fog_density = 0;
 204                         fog_red = 0;
 205                         fog_green = 0;
 206                         fog_blue = 0;
 207                 }
 208         }
 209         if (glfog.value)
 210         {
 211                 if(fog_density)
 212                 {
 213                         // LordHavoc: Borland C++ 5.0 was choking on this line, stupid compiler...
 214                         //GLfloat colors[4] = {(GLfloat) gl_fogred.value, (GLfloat) gl_foggreen.value, (GLfloat) gl_fogblue.value, (GLfloat) 1};
 215                         GLfloat colors[4];
 216                         colors[0] = fog_red;
 217                         colors[1] = fog_green;
 218                         colors[2] = fog_blue;
 219                         colors[3] = 1;
 220                         if (lighthalf)
 221                         {
 222                                 colors[0] *= 0.5f;
 223                                 colors[1] *= 0.5f;
 224                                 colors[2] *= 0.5f;
 225                         }
 226
 227                         glFogi (GL_FOG_MODE, GL_EXP2);
 228                         glFogf (GL_FOG_DENSITY, (GLfloat) fog_density / 100);
 229                         glFogfv (GL_FOG_COLOR, colors);
 230                         glEnable (GL_FOG);
 231                 }
 232                 else
 233                         glDisable(GL_FOG);
 234         }
 235         else
 236         {
 237                 if (fog_density)
 238                 {
 239                         fogenabled = true;
 240                         fogdensity = -4000.0f / (fog_density * fog_density);
 241                         fogcolor[0] = fog_red   = bound(0.0f, fog_red  , 1.0f);
 242                         fogcolor[1] = fog_green = bound(0.0f, fog_green, 1.0f);
 243                         fogcolor[2] = fog_blue  = bound(0.0f, fog_blue , 1.0f);
 244                         if (lighthalf)
 245                         {
 246                                 fogcolor[0] *= 0.5f;
 247                                 fogcolor[1] *= 0.5f;
 248                                 fogcolor[2] *= 0.5f;
 249                         }
 250                 }
 251                 else
 252                         fogenabled = false;
 253         }
 254 }
 255
 256 void FOG_frameend()
 257 {
 258         if (glfog.value)
 259                 glDisable(GL_FOG);
 260 }
 261
 262 void FOG_clear()
 263 {
 264         if (nehahra)
 265         {
 266                 Cvar_Set("gl_fogenable", "0");
 267                 Cvar_Set("gl_fogdensity", "0.2");
 268                 Cvar_Set("gl_fogred", "0.3");
 269                 Cvar_Set("gl_foggreen", "0.3");
 270                 Cvar_Set("gl_fogblue", "0.3");
 271         }
 272         fog_density = fog_red = fog_green = fog_blue = 0.0f;
 273 }
 274
 275 void FOG_registercvars()
 276 {
 277         Cvar_RegisterVariable (&glfog);
 278         if (nehahra)
 279         {
 280                 Cvar_RegisterVariable (&gl_fogenable);
 281                 Cvar_RegisterVariable (&gl_fogdensity);
 282                 Cvar_RegisterVariable (&gl_fogred);
 283                 Cvar_RegisterVariable (&gl_foggreen);
 284                 Cvar_RegisterVariable (&gl_fogblue);
 285                 Cvar_RegisterVariable (&gl_fogstart);
 286                 Cvar_RegisterVariable (&gl_fogend);
 287         }
 288 }
 289
 290 void glpoly_init();
 291 void glrsurf_init();
 292 void rlight_init();
 293
 294 // LordHavoc: vertex array
 295 float *aliasvert;
 296 float *aliasvertnorm;
 297 byte *aliasvertcolor;
 298
 299 void rmain_registercvars()
 300 {
 301         // allocate vertex processing arrays
 302         aliasvert = malloc(sizeof(float[MD2MAX_VERTS][3]));
 303         aliasvertnorm = malloc(sizeof(float[MD2MAX_VERTS][3]));
 304         aliasvertcolor = malloc(sizeof(byte[MD2MAX_VERTS][4]));
 305
 306         FOG_registercvars();
 307         Cvar_RegisterVariable (&r_speeds2);
 308         Cvar_RegisterVariable (&contrast);
 309         Cvar_RegisterVariable (&brightness);
 310         Cvar_RegisterVariable (&gl_lightmode);
 311 //      Cvar_RegisterVariable (&r_dynamicwater);
 312 //      Cvar_RegisterVariable (&r_dynamicbothsides);
 313         Cvar_RegisterVariable (&r_fullbrights);
 314         if (nehahra)
 315                 Cvar_SetValue("r_fullbrights", 0);
 316 //      if (gl_vendor && strstr(gl_vendor, "3Dfx"))
 317 //              gl_lightmode.value = 0;
 318         Cvar_RegisterVariable (&r_fullbright);
 319         makechrometextures();
 320         glpoly_init();
 321         glrsurf_init();
 322         rlight_init();
 323 }
 324
 325 /*
 326 void R_RotateForEntity (entity_t *e)
 327 {
 328         glTranslatef (e->origin[0],  e->origin[1],  e->origin[2]);
 329
 330         glRotatef (e->angles[1],  0, 0, 1);
 331         glRotatef (-e->angles[0],  0, 1, 0);
 332         glRotatef (e->angles[2],  1, 0, 0);
 333
 334         glScalef (e->scale, e->scale, e->scale); // LordHavoc: model scale
 335 }
 336 */
 337
 338 // LordHavoc: if not for the fact BRIGHTFIELD particles require this, it would be removed...
 339 #define NUMVERTEXNORMALS        162
 340
 341 float   r_avertexnormals[NUMVERTEXNORMALS][3] = {
 342 #include "anorms.h"
 343 };
 344
 345 // LordHavoc: moved this shading stuff up because the sprites need shading stuff
 346 vec3_t  shadevector;
 347 vec3_t  shadecolor;
 348
 349 float   modelalpha;
 350
 351 void R_LightPoint (vec3_t color, vec3_t p);
 352 void R_DynamicLightPoint(vec3_t color, vec3_t org, int *dlightbits);
 353 void R_DynamicLightPointNoMask(vec3_t color, vec3_t org);
 354
 355 float R_CalcAnimLerp(int pose, float lerpscale)
 356 {
 357         if (currententity->draw_lastmodel == currententity->model && currententity->draw_lerpstart <= cl.time)
 358         {
 359                 if (pose != currententity->draw_pose)
 360                 {
 361                         currententity->draw_lastpose = currententity->draw_pose;
 362                         currententity->draw_pose = pose;
 363                         currententity->draw_lerpstart = cl.time;
 364                         return 0;
 365                 }
 366                 else
 367                         return ((cl.time - currententity->draw_lerpstart) * lerpscale);
 368         }
 369         else // uninitialized
 370         {
 371                 currententity->draw_lastmodel = currententity->model;
 372                 currententity->draw_lastpose = currententity->draw_pose = pose;
 373                 currententity->draw_lerpstart = cl.time;
 374                 return 0;
 375         }
 376 }
 377
 378 /*
 379 =============================================================
 380
 381   SPRITE MODELS
 382
 383 =============================================================
 384 */
 385
 386 /*
 387 ================
 388 R_GetSpriteFrame
 389 ================
 390 */
 391 void R_GetSpriteFrame (entity_t *currententity, mspriteframe_t **oldframe, mspriteframe_t **newframe, float *framelerp)
 392 {
 393         msprite_t               *psprite;
 394         mspritegroup_t  *pspritegroup;
 395         int                             i, j, numframes, frame;
 396         float                   *pintervals, fullinterval, targettime, time, jtime, jinterval;
 397
 398         psprite = currententity->model->cache.data;
 399         frame = currententity->frame;
 400
 401         if ((frame >= psprite->numframes) || (frame < 0))
 402         {
 403                 Con_Printf ("R_DrawSprite: no such frame %d\n", frame);
 404                 frame = 0;
 405         }
 406
 407         if (psprite->frames[frame].type == SPR_SINGLE)
 408         {
 409                 if (currententity->draw_lastmodel == currententity->model && currententity->draw_lerpstart < cl.time)
 410                 {
 411                         if (frame != currententity->draw_pose)
 412                         {
 413                                 currententity->draw_lastpose = currententity->draw_pose;
 414                                 currententity->draw_pose = frame;
 415                                 currententity->draw_lerpstart = cl.time;
 416                                 *framelerp = 0;
 417                         }
 418                         else
 419                                 *framelerp = (cl.time - currententity->draw_lerpstart) * 10.0;
 420                 }
 421                 else // uninitialized
 422                 {
 423                         currententity->draw_lastmodel = currententity->model;
 424                         currententity->draw_lastpose = currententity->draw_pose = frame;
 425                         currententity->draw_lerpstart = cl.time;
 426                         *framelerp = 0;
 427                 }
 428                 *oldframe = psprite->frames[currententity->draw_lastpose].frameptr;
 429                 *newframe = psprite->frames[frame].frameptr;
 430         }
 431         else
 432         {
 433                 pspritegroup = (mspritegroup_t *)psprite->frames[frame].frameptr;
 434                 pintervals = pspritegroup->intervals;
 435                 numframes = pspritegroup->numframes;
 436                 fullinterval = pintervals[numframes-1];
 437
 438                 time = cl.time + currententity->syncbase;
 439
 440         // when loading in Mod_LoadSpriteGroup, we guaranteed all interval values
 441         // are positive, so we don't have to worry about division by 0
 442                 targettime = time - ((int)(time / fullinterval)) * fullinterval;
 443
 444                 // LordHavoc: since I can't measure the time properly when it loops from numframes-1 to 0,
 445                 //            I instead measure the time of the first frame, hoping it is consistent
 446                 j = numframes-1;jtime = 0;jinterval = pintervals[1] - pintervals[0];
 447                 for (i=0 ; i<(numframes-1) ; i++)
 448                 {
 449                         if (pintervals[i] > targettime)
 450                                 break;
 451                         j = i;jinterval = pintervals[i] - jtime;jtime = pintervals[i];
 452                 }
 453                 *framelerp = (targettime - jtime) / jinterval;
 454
 455                 *oldframe = pspritegroup->frames[j];
 456                 *newframe = pspritegroup->frames[i];
 457         }
 458 }
 459
 460 void GL_DrawSpriteImage (mspriteframe_t *frame, vec3_t origin, vec3_t up, vec3_t right, int red, int green, int blue, int alpha)
 461 {
 462         // LordHavoc: rewrote this to use the transparent poly system
 463         transpolybegin(frame->gl_texturenum, 0, frame->gl_fogtexturenum, currententity->effects & EF_ADDITIVE ? TPOLYTYPE_ADD : TPOLYTYPE_ALPHA);
 464         transpolyvert(origin[0] + frame->down * up[0] + frame->left * right[0], origin[1] + frame->down * up[1] + frame->left * right[1], origin[2] + frame->down * up[2] + frame->left * right[2], 0, 1, red, green, blue, alpha);
 465         transpolyvert(origin[0] + frame->up * up[0] + frame->left * right[0], origin[1] + frame->up * up[1] + frame->left * right[1], origin[2] + frame->up * up[2] + frame->left * right[2], 0, 0, red, green, blue, alpha);
 466         transpolyvert(origin[0] + frame->up * up[0] + frame->right * right[0], origin[1] + frame->up * up[1] + frame->right * right[1], origin[2] + frame->up * up[2] + frame->right * right[2], 1, 0, red, green, blue, alpha);
 467         transpolyvert(origin[0] + frame->down * up[0] + frame->right * right[0], origin[1] + frame->down * up[1] + frame->right * right[1], origin[2] + frame->down * up[2] + frame->right * right[2], 1, 1, red, green, blue, alpha);
 468         transpolyend();
 469 }
 470
 471 extern qboolean isG200, isRagePro, lighthalf;
 472
 473 /*
 474 =================
 475 R_DrawSpriteModel
 476
 477 =================
 478 */
 479 void R_DrawSpriteModel (entity_t *e)
 480 {
 481         mspriteframe_t  *oldframe, *newframe;
 482         float           *up, *right, lerp, ilerp;
 483         vec3_t          v_forward, v_right, v_up, org;
 484         msprite_t               *psprite;
 485
 486         // don't even bother culling, because it's just a single
 487         // polygon without a surface cache
 488         R_GetSpriteFrame (e, &oldframe, &newframe, &lerp);
 489         if (lerp < 0) lerp = 0;
 490         if (lerp > 1) lerp = 1;
 491         if (isRagePro) // LordHavoc: no alpha scaling supported on per pixel alpha images on ATI Rage Pro... ACK!
 492                 lerp = 1;
 493         ilerp = 1.0 - lerp;
 494         psprite = e->model->cache.data;
 495
 496         if (psprite->type == SPR_ORIENTED)
 497         {       // bullet marks on walls
 498                 AngleVectors (e->angles, v_forward, v_right, v_up);
 499                 up = v_up;
 500                 right = v_right;
 501                 VectorSubtract(e->origin, vpn, org);
 502         }
 503         else
 504         {       // normal sprite
 505                 up = vup;
 506                 right = vright;
 507                 VectorCopy(e->origin, org);
 508         }
 509         if (e->scale != 1)
 510         {
 511                 VectorScale(up, e->scale, up);
 512                 VectorScale(right, e->scale, right);
 513         }
 514
 515         if (e->model->flags & EF_FULLBRIGHT || e->effects & EF_FULLBRIGHT)
 516         {
 517                 if (lighthalf)
 518                 {
 519                         shadecolor[0] = e->colormod[0] * 128;
 520                         shadecolor[1] = e->colormod[1] * 128;
 521                         shadecolor[2] = e->colormod[2] * 128;
 522                 }
 523                 else
 524                 {
 525                         shadecolor[0] = e->colormod[0] * 255;
 526                         shadecolor[1] = e->colormod[1] * 255;
 527                         shadecolor[2] = e->colormod[2] * 255;
 528                 }
 529         }
 530         else
 531         {
 532                 R_LightPoint (shadecolor, e->origin);
 533                 R_DynamicLightPointNoMask(shadecolor, e->origin);
 534                 if (lighthalf)
 535                 {
 536                         shadecolor[0] *= e->colormod[0] * 0.5;
 537                         shadecolor[1] *= e->colormod[1] * 0.5;
 538                         shadecolor[2] *= e->colormod[2] * 0.5;
 539                 }
 540         }
 541
 542         // LordHavoc: interpolated sprite rendering
 543         if (ilerp != 0)
 544                 GL_DrawSpriteImage(oldframe, org, up, right, shadecolor[0],shadecolor[1],shadecolor[2],e->alpha*255*ilerp);
 545         if (lerp != 0)
 546                 GL_DrawSpriteImage(newframe, org, up, right, shadecolor[0],shadecolor[1],shadecolor[2],e->alpha*255*lerp);
 547 }
 548
 549 /*
 550 =============================================================
 551
 552   ALIAS MODELS
 553
 554 =============================================================
 555 */
 556
 557 extern vec3_t softwaretransform_x;
 558 extern vec3_t softwaretransform_y;
 559 extern vec3_t softwaretransform_z;
 560 extern vec_t softwaretransform_scale;
 561 extern vec3_t softwaretransform_offset;
 562 void R_AliasLerpVerts(int vertcount, float lerp, trivert2 *verts1, vec3_t scale1, vec3_t translate1, trivert2 *verts2, vec3_t scale2, vec3_t translate2)
 563 {
 564         int i;
 565         vec3_t point, matrix_x, matrix_y, matrix_z;
 566         float *av, *avn;
 567         av = aliasvert;
 568         avn = aliasvertnorm;
 569         if (lerp < 0) lerp = 0;
 570         if (lerp > 1) lerp = 1;
 571         if (lerp != 0)
 572         {
 573                 float ilerp, ilerp127, lerp127, scalex1, scalex2, translatex, scaley1, scaley2, translatey, scalez1, scalez2, translatez;
 574                 if (lerp < 0) lerp = 0;
 575                 if (lerp > 1) lerp = 1;
 576                 ilerp = 1 - lerp;
 577                 ilerp127 = ilerp * (1.0 / 127.0);
 578                 lerp127 = lerp * (1.0 / 127.0);
 579                 VectorScale(softwaretransform_x, softwaretransform_scale, matrix_x);
 580                 VectorScale(softwaretransform_y, softwaretransform_scale, matrix_y);
 581                 VectorScale(softwaretransform_z, softwaretransform_scale, matrix_z);
 582                 // calculate combined interpolation variables
 583                 scalex1 = scale1[0] * ilerp;scalex2 = scale2[0] *  lerp;translatex = translate1[0] * ilerp + translate2[0] *  lerp;
 584                 scaley1 = scale1[1] * ilerp;scaley2 = scale2[1] *  lerp;translatey = translate1[1] * ilerp + translate2[1] *  lerp;
 585                 scalez1 = scale1[2] * ilerp;scalez2 = scale2[2] *  lerp;translatez = translate1[2] * ilerp + translate2[2] *  lerp;
 586                 // generate vertices
 587                 for (i = 0;i < vertcount;i++)
 588                 {
 589                         // rotate, scale, and translate the vertex locations
 590                         point[0] = verts1->v[0] * scalex1 + verts2->v[0] * scalex2 + translatex;
 591                         point[1] = verts1->v[1] * scaley1 + verts2->v[1] * scaley2 + translatey;
 592                         point[2] = verts1->v[2] * scalez1 + verts2->v[2] * scalez2 + translatez;
 593                         *av++ = point[0] * matrix_x[0] + point[1] * matrix_y[0] + point[2] * matrix_z[0] + softwaretransform_offset[0];
 594                         *av++ = point[0] * matrix_x[1] + point[1] * matrix_y[1] + point[2] * matrix_z[1] + softwaretransform_offset[1];
 595                         *av++ = point[0] * matrix_x[2] + point[1] * matrix_y[2] + point[2] * matrix_z[2] + softwaretransform_offset[2];
 596                         // rotate the normals
 597                         point[0] = verts1->n[0] * ilerp127 + verts2->n[0] * lerp127;
 598                         point[1] = verts1->n[1] * ilerp127 + verts2->n[1] * lerp127;
 599                         point[2] = verts1->n[2] * ilerp127 + verts2->n[2] * lerp127;
 600                         *avn++ = point[0] * softwaretransform_x[0] + point[1] * softwaretransform_y[0] + point[2] * softwaretransform_z[0];
 601                         *avn++ = point[0] * softwaretransform_x[1] + point[1] * softwaretransform_y[1] + point[2] * softwaretransform_z[1];
 602                         *avn++ = point[0] * softwaretransform_x[2] + point[1] * softwaretransform_y[2] + point[2] * softwaretransform_z[2];
 603                         verts1++;verts2++;
 604                 }
 605         }
 606         else
 607         {
 608                 float i127;
 609                 i127 = 1.0f / 127.0f;
 610                 VectorScale(softwaretransform_x, softwaretransform_scale, matrix_x);
 611                 VectorScale(softwaretransform_y, softwaretransform_scale, matrix_y);
 612                 VectorScale(softwaretransform_z, softwaretransform_scale, matrix_z);
 613                 // generate vertices
 614                 for (i = 0;i < vertcount;i++)
 615                 {
 616                         // rotate, scale, and translate the vertex locations
 617                         point[0] = verts1->v[0] * scale1[0] + translate1[0];
 618                         point[1] = verts1->v[1] * scale1[1] + translate1[1];
 619                         point[2] = verts1->v[2] * scale1[2] + translate1[2];
 620                         *av++ = point[0] * matrix_x[0] + point[1] * matrix_y[0] + point[2] * matrix_z[0] + softwaretransform_offset[0];
 621                         *av++ = point[0] * matrix_x[1] + point[1] * matrix_y[1] + point[2] * matrix_z[1] + softwaretransform_offset[1];
 622                         *av++ = point[0] * matrix_x[2] + point[1] * matrix_y[2] + point[2] * matrix_z[2] + softwaretransform_offset[2];
 623                         // rotate the normals
 624                         point[0] = verts1->n[0] * i127;
 625                         point[1] = verts1->n[1] * i127;
 626                         point[2] = verts1->n[2] * i127;
 627                         *avn++ = point[0] * softwaretransform_x[0] + point[1] * softwaretransform_y[0] + point[2] * softwaretransform_z[0];
 628                         *avn++ = point[0] * softwaretransform_x[1] + point[1] * softwaretransform_y[1] + point[2] * softwaretransform_z[1];
 629                         *avn++ = point[0] * softwaretransform_x[2] + point[1] * softwaretransform_y[2] + point[2] * softwaretransform_z[2];
 630                         verts1++;
 631                 }
 632         }
 633 }
 634
 635 /*
 636 =================
 637 R_DrawAliasFrame
 638
 639 =================
 640 */
 641 extern vec3_t lightspot;
 642 void R_LightModel(int numverts, vec3_t center);
 643 extern cvar_t gl_vertexarrays;
 644 void R_DrawAliasFrame (aliashdr_t *paliashdr)
 645 {
 646         int                             i, pose, frame = currententity->frame;
 647         float                   lerpscale, lerp;
 648
 649         softwaretransformforentity(currententity);
 650
 651         if ((frame >= paliashdr->numframes) || (frame < 0))
 652         {
 653                 Con_DPrintf ("R_AliasSetupFrame: no such frame %d\n", frame);
 654                 frame = 0;
 655         }
 656
 657         pose = paliashdr->frames[frame].firstpose;
 658
 659         if (paliashdr->frames[frame].numposes > 1)
 660         {
 661                 lerpscale = 1.0 / paliashdr->frames[frame].interval;
 662                 pose += (int)(cl.time * lerpscale) % paliashdr->frames[frame].numposes;
 663         }
 664         else
 665                 lerpscale = 10.0;
 666
 667         lerp = R_CalcAnimLerp(pose, lerpscale);
 668
 669         R_AliasLerpVerts(paliashdr->numverts, lerp, (trivert2 *)((byte *)paliashdr + paliashdr->posedata) + currententity->draw_lastpose * paliashdr->numverts, paliashdr->scale, paliashdr->scale_origin, (trivert2 *)((byte *)paliashdr + paliashdr->posedata) + currententity->draw_pose * paliashdr->numverts, paliashdr->scale, paliashdr->scale_origin);
 670
 671         R_LightModel(paliashdr->numverts, currententity->origin);
 672
 673         glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 674         glShadeModel(GL_SMOOTH);
 675         if (currententity->effects & EF_ADDITIVE)
 676         {
 677                 glBlendFunc(GL_SRC_ALPHA, GL_ONE); // additive rendering
 678                 glEnable(GL_BLEND);
 679                 glDepthMask(0);
 680         }
 681         else if (modelalpha != 1.0)
 682         {
 683                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 684                 glEnable(GL_BLEND);
 685                 glDepthMask(0);
 686         }
 687         else
 688         {
 689                 glDisable(GL_BLEND);
 690                 glDepthMask(1);
 691         }
 692
 693         if (gl_vertexarrays.value)
 694         {
 695                 // LordHavoc: I would use InterleavedArrays here,
 696                 // but the texture coordinates are a seperate array,
 697                 // and it would be wasteful to copy them into the main array...
 698         //      glColor4f(shadecolor[0], shadecolor[1], shadecolor[2], modelalpha);
 699                 qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 700                 qglColorPointer(4, GL_UNSIGNED_BYTE, 0, aliasvertcolor);
 701                 glEnableClientState(GL_VERTEX_ARRAY);
 702                 glEnableClientState(GL_COLOR_ARRAY);
 703
 704                 // draw the front faces
 705                 qglTexCoordPointer(2, GL_FLOAT, 0, (void *)((int) paliashdr->texcoords + (int) paliashdr));
 706                 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 707                 qglDrawElements(GL_TRIANGLES, paliashdr->frontfaces * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + (int) paliashdr));
 708                 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 709
 710                 // draw the back faces
 711                 qglTexCoordPointer(2, GL_FLOAT, 0, (void *)((int) paliashdr->texcoords + sizeof(float[2]) * paliashdr->numverts + (int) paliashdr));
 712                 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 713                 qglDrawElements(GL_TRIANGLES, paliashdr->backfaces * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + sizeof(unsigned short[3]) * paliashdr->frontfaces + (int) paliashdr));
 714                 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 715
 716                 glDisableClientState(GL_COLOR_ARRAY);
 717                 glDisableClientState(GL_VERTEX_ARRAY);
 718         }
 719         else
 720         {
 721                 unsigned short *in, index;
 722                 float *tex;
 723                 in = (void *)((int) paliashdr->vertindices + (int) paliashdr);
 724                 glBegin(GL_TRIANGLES);
 725                 // draw the front faces
 726                 tex = (void *)((int) paliashdr->texcoords + (int) paliashdr);
 727                 //if (isG200)
 728                 //{
 729                         for (i = 0;i < paliashdr->frontfaces * 3;i++)
 730                         {
 731                                 index = *in++;
 732                                 glTexCoord2f(tex[index*2], tex[index*2+1]);
 733                                 glColor4f(aliasvertcolor[index*4] * (1.0f / 255.0f), aliasvertcolor[index*4+1] * (1.0f / 255.0f), aliasvertcolor[index*4+2] * (1.0f / 255.0f), aliasvertcolor[index*4+3] * (1.0f / 255.0f));
 734                                 glVertex3fv(&aliasvert[index*3]);
 735                         }
 736                 /*
 737                 }
 738                 else
 739                 {
 740                         for (i = 0;i < paliashdr->frontfaces * 3;i++)
 741                         {
 742                                 index = *in++;
 743                                 glTexCoord2f(tex[index*2], tex[index*2+1]);
 744                                 glColor4ub(aliasvertcolor[index*4], aliasvertcolor[index*4+1], aliasvertcolor[index*4+2], aliasvertcolor[index*4+3]);
 745                                 glVertex3fv(&aliasvert[index*3]);
 746                         }
 747                 }
 748                 */
 749                 // draw the back faces
 750                 tex += 2 * paliashdr->numverts;
 751                 //if (isG200)
 752                 //{
 753                         for (i = 0;i < paliashdr->backfaces * 3;i++)
 754                         {
 755                                 index = *in++;
 756                                 glTexCoord2f(tex[index*2], tex[index*2+1]);
 757                                 glColor4f(aliasvertcolor[index*4] * (1.0f / 255.0f), aliasvertcolor[index*4+1] * (1.0f / 255.0f), aliasvertcolor[index*4+2] * (1.0f / 255.0f), aliasvertcolor[index*4+3] * (1.0f / 255.0f));
 758                                 glVertex3fv(&aliasvert[index*3]);
 759                         }
 760                 /*
 761                 }
 762                 else
 763                 {
 764                         for (i = 0;i < paliashdr->backfaces * 3;i++)
 765                         {
 766                                 index = *in++;
 767                                 glTexCoord2f(tex[index*2], tex[index*2+1]);
 768                                 glColor4ub(aliasvertcolor[index*4], aliasvertcolor[index*4+1], aliasvertcolor[index*4+2], aliasvertcolor[index*4+3]);
 769                                 glVertex3fv(&aliasvert[index*3]);
 770                         }
 771                 }
 772                 */
 773                 glEnd();
 774         }
 775
 776         if (fogenabled)
 777         {
 778                 vec3_t diff;
 779                 glDisable (GL_TEXTURE_2D);
 780                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 781                 glEnable (GL_BLEND);
 782                 glDepthMask(0); // disable zbuffer updates
 783
 784                 VectorSubtract(currententity->origin, r_refdef.vieworg, diff);
 785                 glColor4f(fogcolor[0], fogcolor[1], fogcolor[2], exp(fogdensity/DotProduct(diff,diff)));
 786
 787                 if (gl_vertexarrays.value)
 788                 {
 789                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 790                         glEnableClientState(GL_VERTEX_ARRAY);
 791                         qglDrawElements(GL_TRIANGLES, paliashdr->numtris * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + (int) paliashdr));
 792                         glDisableClientState(GL_VERTEX_ARRAY);
 793                 }
 794                 else
 795                 {
 796                         unsigned short *in;
 797                         in = (void *)((int) paliashdr->vertindices + (int) paliashdr);
 798                         glBegin(GL_TRIANGLES);
 799                         for (i = 0;i < paliashdr->numtris * 3;i++)
 800                                 glVertex3fv(&aliasvert[*in++ * 3]);
 801                         glEnd();
 802                 }
 803
 804                 glEnable (GL_TEXTURE_2D);
 805                 glColor3f (1,1,1);
 806         }
 807
 808         if (!fogenabled && r_shadows.value && !(currententity->effects & EF_ADDITIVE) && currententity != &cl.viewent)
 809         {
 810                 // flatten it to make a shadow
 811                 float *av = aliasvert + 2, l = lightspot[2] + 0.125;
 812                 av = aliasvert + 2;
 813                 for (i = 0;i < paliashdr->numverts;i++, av+=3)
 814                         if (*av > l)
 815                                 *av = l;
 816                 glDisable (GL_TEXTURE_2D);
 817                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 818                 glEnable (GL_BLEND);
 819                 glDepthMask(0); // disable zbuffer updates
 820                 glColor4f (0,0,0,0.5 * modelalpha);
 821
 822                 if (gl_vertexarrays.value)
 823                 {
 824                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 825                         glEnableClientState(GL_VERTEX_ARRAY);
 826                         qglDrawElements(GL_TRIANGLES, paliashdr->numtris * 3, GL_UNSIGNED_SHORT, (void *)((int) paliashdr->vertindices + (int) paliashdr));
 827                         glDisableClientState(GL_VERTEX_ARRAY);
 828                 }
 829                 else
 830                 {
 831                         unsigned short *in;
 832                         in = (void *)((int) paliashdr->vertindices + (int) paliashdr);
 833                         glBegin(GL_TRIANGLES);
 834                         for (i = 0;i < paliashdr->numtris * 3;i++)
 835                                 glVertex3fv(&aliasvert[*in++ * 3]);
 836                         glEnd();
 837                 }
 838
 839                 glEnable (GL_TEXTURE_2D);
 840                 glColor3f (1,1,1);
 841         }
 842
 843         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 844         glEnable (GL_BLEND);
 845         glDepthMask(1);
 846 }
 847
 848 /*
 849 =================
 850 R_DrawQ2AliasFrame
 851
 852 =================
 853 */
 854 void R_DrawQ2AliasFrame (md2mem_t *pheader)
 855 {
 856         int *order, count, frame = currententity->frame;
 857         float lerp;
 858         md2memframe_t *frame1, *frame2;
 859
 860         softwaretransformforentity(currententity);
 861
 862         if ((frame >= pheader->num_frames) || (frame < 0))
 863         {
 864                 Con_DPrintf ("R_SetupQ2AliasFrame: no such frame %d\n", frame);
 865                 frame = 0;
 866         }
 867
 868         lerp = R_CalcAnimLerp(frame, 10);
 869
 870         frame1 = (void *)((int) pheader + pheader->ofs_frames + (pheader->framesize * currententity->draw_lastpose));
 871         frame2 = (void *)((int) pheader + pheader->ofs_frames + (pheader->framesize * currententity->draw_pose));
 872         R_AliasLerpVerts(pheader->num_xyz, lerp, frame1->verts, frame1->scale, frame1->translate, frame2->verts, frame2->scale, frame2->translate);
 873
 874         R_LightModel(pheader->num_xyz, currententity->origin);
 875
 876         if (gl_vertexarrays.value)
 877         {
 878                 // LordHavoc: big mess...
 879                 // using arrays only slightly, although it is enough to prevent duplicates
 880                 // (saving half the transforms)
 881                 //glColor4f(shadecolor[0], shadecolor[1], shadecolor[2], modelalpha);
 882                 qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 883                 qglColorPointer(4, GL_UNSIGNED_BYTE, 0, aliasvertcolor);
 884                 glEnableClientState(GL_VERTEX_ARRAY);
 885                 glEnableClientState(GL_COLOR_ARRAY);
 886
 887                 order = (int *)((int)pheader + pheader->ofs_glcmds);
 888                 while(1)
 889                 {
 890                         if (!(count = *order++))
 891                                 break;
 892                         if (count > 0)
 893                                 glBegin(GL_TRIANGLE_STRIP);
 894                         else
 895                         {
 896                                 glBegin(GL_TRIANGLE_FAN);
 897                                 count = -count;
 898                         }
 899                         do
 900                         {
 901                                 glTexCoord2f(((float *)order)[0], ((float *)order)[1]);
 902                                 qglArrayElement(order[2]);
 903                                 order += 3;
 904                         }
 905                         while (count--);
 906                 }
 907
 908                 glDisableClientState(GL_COLOR_ARRAY);
 909                 glDisableClientState(GL_VERTEX_ARRAY);
 910         }
 911         else
 912         {
 913                 order = (int *)((int)pheader + pheader->ofs_glcmds);
 914                 while(1)
 915                 {
 916                         if (!(count = *order++))
 917                                 break;
 918                         if (count > 0)
 919                                 glBegin(GL_TRIANGLE_STRIP);
 920                         else
 921                         {
 922                                 glBegin(GL_TRIANGLE_FAN);
 923                                 count = -count;
 924                         }
 925                         //if (isG200)
 926                         //{
 927                                 do
 928                                 {
 929                                         glTexCoord2f(((float *)order)[0], ((float *)order)[1]);
 930                                         glColor4f(aliasvertcolor[order[2] * 4] * (1.0f / 255.0f), aliasvertcolor[order[2] * 4 + 1] * (1.0f / 255.0f), aliasvertcolor[order[2] * 4 + 2] * (1.0f / 255.0f), aliasvertcolor[order[2] * 4 + 3] * (1.0f / 255.0f));
 931                                         glVertex3fv(&aliasvert[order[2] * 3]);
 932                                         order += 3;
 933                                 }
 934                                 while (count--);
 935                         /*
 936                         }
 937                         else
 938                         {
 939                                 do
 940                                 {
 941                                         glTexCoord2f(((float *)order)[0], ((float *)order)[1]);
 942                                         glColor4ub(aliasvertcolor[order[2] * 4], aliasvertcolor[order[2] * 4 + 1], aliasvertcolor[order[2] * 4 + 2], aliasvertcolor[order[2] * 4 + 3]);
 943                                         glVertex3fv(&aliasvert[order[2] * 3]);
 944                                         order += 3;
 945                                 }
 946                                 while (count--);
 947                         }
 948                         */
 949                 }
 950         }
 951
 952         if (fogenabled)
 953         {
 954                 glDisable (GL_TEXTURE_2D);
 955                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 956                 glEnable (GL_BLEND);
 957                 glDepthMask(0); // disable zbuffer updates
 958                 {
 959                         vec3_t diff;
 960                         VectorSubtract(currententity->origin, r_refdef.vieworg, diff);
 961                         glColor4f(fogcolor[0], fogcolor[1], fogcolor[2], exp(fogdensity/DotProduct(diff,diff)));
 962                 }
 963
 964                 if (gl_vertexarrays.value)
 965                 {
 966                         // LordHavoc: big mess...
 967                         // using arrays only slightly, although it is enough to prevent duplicates
 968                         // (saving half the transforms)
 969                         //glColor4f(shadecolor[0], shadecolor[1], shadecolor[2], modelalpha);
 970                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 971                         glEnableClientState(GL_VERTEX_ARRAY);
 972
 973                         order = (int *)((int)pheader + pheader->ofs_glcmds);
 974                         while(1)
 975                         {
 976                                 if (!(count = *order++))
 977                                         break;
 978                                 if (count > 0)
 979                                         glBegin(GL_TRIANGLE_STRIP);
 980                                 else
 981                                 {
 982                                         glBegin(GL_TRIANGLE_FAN);
 983                                         count = -count;
 984                                 }
 985                                 do
 986                                 {
 987                                         qglArrayElement(order[2]);
 988                                         order += 3;
 989                                 }
 990                                 while (count--);
 991                         }
 992
 993                         glDisableClientState(GL_VERTEX_ARRAY);
 994                 }
 995                 else
 996                 {
 997                         order = (int *)((int)pheader + pheader->ofs_glcmds);
 998                         while(1)
 999                         {
1000                                 if (!(count = *order++))
1001                                         break;
1002                                 if (count > 0)
1003                                         glBegin(GL_TRIANGLE_STRIP);
1004                                 else
1005                                 {
1006                                         glBegin(GL_TRIANGLE_FAN);
1007                                         count = -count;
1008                                 }
1009                                 do
1010                                 {
1011                                         glVertex3fv(&aliasvert[order[2] * 3]);
1012                                         order += 3;
1013                                 }
1014                                 while (count--);
1015                         }
1016                 }
1017
1018                 glEnable (GL_TEXTURE_2D);
1019                 glColor3f (1,1,1);
1020         }
1021
1022         if (!fogenabled && r_shadows.value && !(currententity->effects & EF_ADDITIVE) && currententity != &cl.viewent)
1023         {
1024                 int i;
1025                 float *av = aliasvert + 2, l = lightspot[2] + 0.125;
1026                 av = aliasvert + 2;
1027                 for (i = 0;i < pheader->num_xyz;i++, av+=3)
1028                         if (*av > l)
1029                                 *av = l;
1030                 glDisable (GL_TEXTURE_2D);
1031                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1032                 glEnable (GL_BLEND);
1033                 glDepthMask(0); // disable zbuffer updates
1034                 glColor4f (0,0,0,0.5 * modelalpha);
1035
1036                 if (gl_vertexarrays.value)
1037                 {
1038                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
1039                         glEnableClientState(GL_VERTEX_ARRAY);
1040
1041                         while(1)
1042                         {
1043                                 if (!(count = *order++))
1044                                         break;
1045                                 if (count > 0)
1046                                         glBegin(GL_TRIANGLE_STRIP);
1047                                 else
1048                                 {
1049                                         glBegin(GL_TRIANGLE_FAN);
1050                                         count = -count;
1051                                 }
1052                                 do
1053                                 {
1054                                         qglArrayElement(order[2]);
1055                                         order += 3;
1056                                 }
1057                                 while (count--);
1058                         }
1059
1060                         glDisableClientState(GL_VERTEX_ARRAY);
1061                 }
1062                 else
1063                 {
1064                         while(1)
1065                         {
1066                                 if (!(count = *order++))
1067                                         break;
1068                                 if (count > 0)
1069                                         glBegin(GL_TRIANGLE_STRIP);
1070                                 else
1071                                 {
1072                                         glBegin(GL_TRIANGLE_FAN);
1073                                         count = -count;
1074                                 }
1075                                 do
1076                                 {
1077                                         glVertex3fv(&aliasvert[order[2] * 3]);
1078                                         order += 3;
1079                                 }
1080                                 while (count--);
1081                         }
1082                 }
1083
1084                 glEnable (GL_TEXTURE_2D);
1085                 glColor3f (1,1,1);
1086         }
1087
1088         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1089         glEnable (GL_BLEND);
1090         glDepthMask(1);
1091 }
1092
1093 /*
1094 =================
1095 R_DrawAliasModel
1096
1097 =================
1098 */
1099 void R_DrawAliasModel (entity_t *e, int cull)
1100 {
1101         int                     i;
1102         model_t         *clmodel;
1103         vec3_t          mins, maxs;
1104         aliashdr_t      *paliashdr = NULL;
1105         md2mem_t                *pheader = NULL;
1106         int                     anim;
1107
1108         if (modelalpha < (1.0 / 64.0))
1109                 return; // basically completely transparent
1110
1111         clmodel = currententity->model;
1112
1113         VectorAdd (currententity->origin, clmodel->mins, mins);
1114         VectorAdd (currententity->origin, clmodel->maxs, maxs);
1115
1116         if (cull && R_CullBox (mins, maxs))
1117                 return;
1118
1119         VectorCopy (currententity->origin, r_entorigin);
1120         VectorSubtract (r_origin, r_entorigin, modelorg);
1121
1122         // get lighting information
1123
1124         if (currententity->model->flags & EF_FULLBRIGHT || currententity->effects & EF_FULLBRIGHT)
1125         {
1126                 shadecolor[0] = currententity->colormod[0] * 256;
1127                 shadecolor[1] = currententity->colormod[1] * 256;
1128                 shadecolor[2] = currententity->colormod[2] * 256;
1129         }
1130         else
1131         {
1132                 R_LightPoint (shadecolor, currententity->origin);
1133
1134                 // HACK HACK HACK -- no fullbright colors, so make torches full light
1135                 if (!strcmp (currententity->model->name, "progs/flame2.mdl") || !strcmp (currententity->model->name, "progs/flame.mdl") )
1136                         shadecolor[0] = shadecolor[1] = shadecolor[2] = 128;
1137
1138                 shadecolor[0] *= currententity->colormod[0];
1139                 shadecolor[1] *= currententity->colormod[1];
1140                 shadecolor[2] *= currententity->colormod[2];
1141         }
1142
1143         // locate the proper data
1144         if (clmodel->aliastype == ALIASTYPE_MD2)
1145         {
1146                 pheader = (void *)Mod_Extradata (currententity->model);
1147                 c_alias_polys += pheader->num_tris;
1148         }
1149         else
1150         {
1151                 paliashdr = (void *)Mod_Extradata (currententity->model);
1152                 c_alias_polys += paliashdr->numtris;
1153         }
1154
1155         // draw all the triangles
1156
1157         if (clmodel->aliastype == ALIASTYPE_MD2)
1158         {
1159                 if (currententity->skinnum < 0 || currententity->skinnum >= pheader->num_skins)
1160                 {
1161                         currententity->skinnum = 0;
1162                         Con_DPrintf("invalid skin number %d for model %s\n", currententity->skinnum, clmodel->name);
1163                 }
1164                 glBindTexture(GL_TEXTURE_2D, pheader->gl_texturenum[currententity->skinnum]);
1165         }
1166         else
1167         {
1168                 if (currententity->skinnum < 0 || currententity->skinnum >= paliashdr->numskins)
1169                 {
1170                         currententity->skinnum = 0;
1171                         Con_DPrintf("invalid skin number %d for model %s\n", currententity->skinnum, clmodel->name);
1172                 }
1173                 anim = (int)(cl.time*10) & 3;
1174             glBindTexture(GL_TEXTURE_2D, paliashdr->gl_texturenum[currententity->skinnum][anim]);
1175         }
1176         glDisable(GL_ALPHA_TEST);
1177         glEnable (GL_TEXTURE_2D);
1178
1179         // we can't dynamically colormap textures, so they are cached
1180         // seperately for the players.  Heads are just uncolored.
1181         if (currententity->colormap != 0 /*vid.colormap*/ /* && !gl_nocolors.value*/)
1182         {
1183                 i = currententity - cl_entities;
1184                 if (i >= 1 && i<=cl.maxclients /* && !strcmp (currententity->model->name, "progs/player.mdl") */)
1185                         glBindTexture(GL_TEXTURE_2D, playertextures - 1 + i);
1186         }
1187
1188 //      if (gl_affinemodels.value)
1189 //              glHint (GL_PERSPECTIVE_CORRECTION_HINT, GL_FASTEST);
1190         if (clmodel->aliastype == ALIASTYPE_MD2)
1191                 R_DrawQ2AliasFrame (pheader);
1192         else
1193                 R_DrawAliasFrame (paliashdr);
1194
1195         glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
1196 }
1197
1198 //==================================================================================
1199
1200 void R_DrawBrushModel (entity_t *e);
1201
1202 /*
1203 =============
1204 R_DrawEntitiesOnList
1205 =============
1206 */
1207 // LordHavoc: split so bmodels are rendered before any other objects
1208 void R_DrawEntitiesOnList1 (void)
1209 {
1210         int             i;
1211
1212         if (!r_drawentities.value)
1213                 return;
1214
1215         for (i=0 ; i<cl_numvisedicts ; i++)
1216         {
1217                 if (cl_visedicts[i]->model->type != mod_brush)
1218                         continue;
1219                 currententity = cl_visedicts[i];
1220                 modelalpha = currententity->alpha;
1221
1222                 R_DrawBrushModel (currententity);
1223         }
1224 }
1225
1226 void R_DrawEntitiesOnList2 (void)
1227 {
1228         int             i;
1229
1230         if (!r_drawentities.value)
1231                 return;
1232
1233         for (i=0 ; i<cl_numvisedicts ; i++)
1234         {
1235                 currententity = cl_visedicts[i];
1236                 modelalpha = currententity->alpha;
1237
1238                 switch (currententity->model->type)
1239                 {
1240                 case mod_alias:
1241                         R_DrawAliasModel (currententity, true);
1242                         break;
1243
1244                 case mod_sprite:
1245                         R_DrawSpriteModel (currententity);
1246                         break;
1247
1248                 default:
1249                         break;
1250                 }
1251         }
1252 }
1253
1254 /*
1255 =============
1256 R_DrawViewModel
1257 =============
1258 */
1259 void R_DrawViewModel (void)
1260 {
1261         if (!r_drawviewmodel.value || chase_active.value || envmap || !r_drawentities.value || cl.items & IT_INVISIBILITY || cl.stats[STAT_HEALTH] <= 0 || !cl.viewent.model)
1262                 return;
1263
1264         currententity = &cl.viewent;
1265         currententity->alpha = modelalpha = cl_entities[cl.viewentity].alpha; // LordHavoc: if the player is transparent, so is his gun
1266         currententity->effects = cl_entities[cl.viewentity].effects;
1267         currententity->scale = 1;
1268         VectorCopy(cl_entities[cl.viewentity].colormod, currententity->colormod);
1269
1270         // hack the depth range to prevent view model from poking into walls
1271         glDepthRange (gldepthmin, gldepthmin + 0.3*(gldepthmax-gldepthmin));
1272         R_DrawAliasModel (currententity, FALSE);
1273         glDepthRange (gldepthmin, gldepthmax);
1274 }
1275
1276 void R_DrawBrushModel (entity_t *e);
1277
1278 void RotatePointAroundVector( vec3_t dst, const vec3_t dir, const vec3_t point, float degrees );
1279
1280 void R_SetFrustum (void)
1281 {
1282         int             i;
1283
1284         if (r_refdef.fov_x == 90)
1285         {
1286                 // front side is visible
1287
1288                 VectorAdd (vpn, vright, frustum[0].normal);
1289                 VectorSubtract (vpn, vright, frustum[1].normal);
1290
1291                 VectorAdd (vpn, vup, frustum[2].normal);
1292                 VectorSubtract (vpn, vup, frustum[3].normal);
1293         }
1294         else
1295         {
1296                 // rotate VPN right by FOV_X/2 degrees
1297                 RotatePointAroundVector( frustum[0].normal, vup, vpn, -(90-r_refdef.fov_x / 2 ) );
1298                 // rotate VPN left by FOV_X/2 degrees
1299                 RotatePointAroundVector( frustum[1].normal, vup, vpn, 90-r_refdef.fov_x / 2 );
1300                 // rotate VPN up by FOV_X/2 degrees
1301                 RotatePointAroundVector( frustum[2].normal, vright, vpn, 90-r_refdef.fov_y / 2 );
1302                 // rotate VPN down by FOV_X/2 degrees
1303                 RotatePointAroundVector( frustum[3].normal, vright, vpn, -( 90 - r_refdef.fov_y / 2 ) );
1304         }
1305
1306         for (i=0 ; i<4 ; i++)
1307         {
1308                 frustum[i].type = PLANE_ANYZ;
1309                 frustum[i].dist = DotProduct (r_origin, frustum[i].normal);
1310 //              frustum[i].signbits = SignbitsForPlane (&frustum[i]);
1311                 BoxOnPlaneSideClassify(&frustum[i]);
1312         }
1313 }
1314
1315 void R_AnimateLight (void);
1316 void V_CalcBlend (void);
1317
1318 /*
1319 ===============
1320 R_SetupFrame
1321 ===============
1322 */
1323 void R_SetupFrame (void)
1324 {
1325 // don't allow cheats in multiplayer
1326         if (cl.maxclients > 1)
1327         {
1328                 Cvar_Set ("r_fullbright", "0");
1329                 Cvar_Set ("r_ambient", "0");
1330         }
1331
1332         R_AnimateLight ();
1333
1334         r_framecount++;
1335
1336 // build the transformation matrix for the given view angles
1337         VectorCopy (r_refdef.vieworg, r_origin);
1338
1339         AngleVectors (r_refdef.viewangles, vpn, vright, vup);
1340
1341 // current viewleaf
1342         r_oldviewleaf = r_viewleaf;
1343         r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
1344
1345         V_SetContentsColor (r_viewleaf->contents);
1346         V_CalcBlend ();
1347
1348         r_cache_thrash = false;
1349
1350         c_brush_polys = 0;
1351         c_alias_polys = 0;
1352
1353 }
1354
1355
1356 void MYgluPerspective( GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar )
1357 {
1358    GLdouble xmin, xmax, ymin, ymax;
1359
1360    ymax = zNear * tan( fovy * M_PI / 360.0 );
1361    ymin = -ymax;
1362
1363    xmin = ymin * aspect;
1364    xmax = ymax * aspect;
1365
1366    glFrustum( xmin, xmax, ymin, ymax, zNear, zFar );
1367 }
1368
1369
1370 extern char skyname[];
1371
1372 /*
1373 =============
1374 R_SetupGL
1375 =============
1376 */
1377 void R_SetupGL (void)
1378 {
1379         float   screenaspect;
1380         extern  int glwidth, glheight;
1381         int             x, x2, y2, y, w, h;
1382
1383         //
1384         // set up viewpoint
1385         //
1386         glMatrixMode(GL_PROJECTION);
1387     glLoadIdentity ();
1388         x = r_refdef.vrect.x * glwidth/vid.width;
1389         x2 = (r_refdef.vrect.x + r_refdef.vrect.width) * glwidth/vid.width;
1390         y = (vid.height-r_refdef.vrect.y) * glheight/vid.height;
1391         y2 = (vid.height - (r_refdef.vrect.y + r_refdef.vrect.height)) * glheight/vid.height;
1392
1393         // fudge around because of frac screen scale
1394         if (x > 0)
1395                 x--;
1396         if (x2 < glwidth)
1397                 x2++;
1398         if (y2 < 0)
1399                 y2--;
1400         if (y < glheight)
1401                 y++;
1402
1403         w = x2 - x;
1404         h = y - y2;
1405
1406         if (envmap)
1407         {
1408                 x = y2 = 0;
1409                 w = h = 256;
1410         }
1411
1412         glViewport (glx + x, gly + y2, w, h);
1413     screenaspect = (float)r_refdef.vrect.width/r_refdef.vrect.height;
1414 //      yfov = 2*atan((float)r_refdef.vrect.height/r_refdef.vrect.width)*180/M_PI;
1415 //      if (skyname[0]) // skybox enabled?
1416 //              MYgluPerspective (r_refdef.fov_y,  screenaspect,  4,  r_skyboxsize.value*1.732050807569 + 256); // this is size*sqrt(3) + 256
1417 //      else
1418                 MYgluPerspective (r_refdef.fov_y,  screenaspect,  4,  r_farclip.value);
1419
1420         glCullFace(GL_FRONT);
1421
1422         glMatrixMode(GL_MODELVIEW);
1423     glLoadIdentity ();
1424
1425     glRotatef (-90,  1, 0, 0);      // put Z going up
1426     glRotatef (90,  0, 0, 1);       // put Z going up
1427     glRotatef (-r_refdef.viewangles[2],  1, 0, 0);
1428     glRotatef (-r_refdef.viewangles[0],  0, 1, 0);
1429     glRotatef (-r_refdef.viewangles[1],  0, 0, 1);
1430     glTranslatef (-r_refdef.vieworg[0],  -r_refdef.vieworg[1],  -r_refdef.vieworg[2]);
1431
1432         glGetFloatv (GL_MODELVIEW_MATRIX, r_world_matrix);
1433
1434         //
1435         // set drawing parms
1436         //
1437 //      if (gl_cull.value)
1438                 glEnable(GL_CULL_FACE);
1439 //      else
1440 //              glDisable(GL_CULL_FACE);
1441
1442         glEnable(GL_BLEND); // was Disable
1443         glDisable(GL_ALPHA_TEST);
1444         glAlphaFunc(GL_GREATER, 0.5);
1445         glEnable(GL_DEPTH_TEST);
1446         glDepthMask(1);
1447         glShadeModel(GL_SMOOTH);
1448 }
1449
1450 void R_DrawWorld (void);
1451 //void R_RenderDlights (void);
1452 void R_DrawParticles (void);
1453
1454 /*
1455 =============
1456 R_Clear
1457 =============
1458 */
1459 void R_Clear (void)
1460 {
1461 //      glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // LordHavoc: moved to SCR_UpdateScreen
1462         gldepthmin = 0;
1463         gldepthmax = 1;
1464         glDepthFunc (GL_LEQUAL);
1465
1466         glDepthRange (gldepthmin, gldepthmax);
1467 }
1468
1469 // LordHavoc: my trick to *FIX* GLQuake lighting once and for all :)
1470 void GL_Brighten()
1471 {
1472         glMatrixMode(GL_PROJECTION);
1473     glLoadIdentity ();
1474         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
1475         glMatrixMode(GL_MODELVIEW);
1476     glLoadIdentity ();
1477         glDisable (GL_DEPTH_TEST);
1478         glDisable (GL_CULL_FACE);
1479         glDisable(GL_TEXTURE_2D);
1480         glEnable(GL_BLEND);
1481         glBlendFunc (GL_DST_COLOR, GL_ONE);
1482         glBegin (GL_TRIANGLES);
1483         glColor3f (1, 1, 1);
1484         glVertex2f (-5000, -5000);
1485         glVertex2f (10000, -5000);
1486         glVertex2f (-5000, 10000);
1487         glEnd ();
1488         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1489         glDisable(GL_BLEND);
1490         glEnable(GL_TEXTURE_2D);
1491         glEnable (GL_DEPTH_TEST);
1492         glEnable (GL_CULL_FACE);
1493 }
1494
1495 extern cvar_t contrast;
1496 extern cvar_t brightness;
1497 extern cvar_t gl_lightmode;
1498
1499 void GL_BlendView()
1500 {
1501         glMatrixMode(GL_PROJECTION);
1502     glLoadIdentity ();
1503         glOrtho  (0, vid.width, vid.height, 0, -99999, 99999);
1504         glMatrixMode(GL_MODELVIEW);
1505     glLoadIdentity ();
1506         glDisable (GL_DEPTH_TEST);
1507         glDisable (GL_CULL_FACE);
1508         glDisable(GL_TEXTURE_2D);
1509         glEnable(GL_BLEND);
1510         if (lighthalf)
1511         {
1512                 glBlendFunc (GL_DST_COLOR, GL_ONE);
1513                 glBegin (GL_TRIANGLES);
1514                 glColor3f (1, 1, 1);
1515                 glVertex2f (-5000, -5000);
1516                 glVertex2f (10000, -5000);
1517                 glVertex2f (-5000, 10000);
1518                 glEnd ();
1519         }
1520         glBlendFunc (GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1521         contrast.value = bound(0.2, contrast.value, 1.0);
1522         if (/*gl_polyblend.value && */v_blend[3])
1523         {
1524                 glBegin (GL_TRIANGLES);
1525                 glColor4fv (v_blend);
1526                 glVertex2f (-5000, -5000);
1527                 glVertex2f (10000, -5000);
1528                 glVertex2f (-5000, 10000);
1529                 glEnd ();
1530         }
1531
1532         glEnable (GL_CULL_FACE);
1533         glEnable (GL_DEPTH_TEST);
1534         glDisable(GL_BLEND);
1535         glEnable(GL_TEXTURE_2D);
1536 }
1537
1538 #define TIMEREPORT(DESC) \
1539         if (r_speeds2.value)\
1540         {\
1541                 temptime = -currtime;\
1542                 currtime = Sys_FloatTime();\
1543                 temptime += currtime;\
1544                 Con_Printf(DESC " %.4fms ", temptime * 1000.0);\
1545         }
1546
1547 /*
1548 ================
1549 R_RenderView
1550
1551 r_refdef must be set before the first call
1552 ================
1553 */
1554 void R_RenderView (void)
1555 {
1556 //      double currtime, temptime;
1557 //      if (r_norefresh.value)
1558 //              return;
1559
1560         if (!r_worldentity.model || !cl.worldmodel)
1561                 Sys_Error ("R_RenderView: NULL worldmodel");
1562
1563         lighthalf = gl_lightmode.value;
1564
1565         FOG_framebegin();
1566         transpolyclear();
1567
1568 //      if (r_speeds2.value)
1569 //      {
1570 //              currtime = Sys_FloatTime();
1571 //              Con_Printf("render time: ");
1572 //      }
1573         R_Clear();
1574 //      TIMEREPORT("R_Clear")
1575
1576         // render normal view
1577
1578         R_SetupFrame ();
1579         R_SetFrustum ();
1580         R_SetupGL ();
1581         R_MarkLeaves ();        // done here so we know if we're in water
1582         R_DrawWorld ();         // adds static entities to the list
1583         S_ExtraUpdate ();       // don't let sound get messed up if going slow
1584         wallpolyclear();
1585         R_DrawEntitiesOnList1 (); // BSP models
1586         wallpolyrender();
1587         R_DrawEntitiesOnList2 (); // other models
1588 //      R_RenderDlights ();
1589         R_DrawViewModel ();
1590         R_DrawParticles ();
1591         transpolyrender();
1592
1593         FOG_frameend();
1594         GL_BlendView();
1595 //      if (r_speeds2.value)
1596 //              Con_Printf("\n");
1597 }