gl_models.c

   1
   2 #include "quakedef.h"
   3
   4 // LordHavoc: vertex array
   5 float *aliasvert;
   6 float *aliasvertnorm;
   7 byte *aliasvertcolor;
   8 byte *aliasvertcolor2;
   9
  10 int chrometexture;
  11
  12 void makechrometexture()
  13 {
  14         int i;
  15         byte noise[64*64];
  16         byte data[64*64][4];
  17
  18         fractalnoise(noise, 64, 16);
  19
  20         // convert to RGBA data
  21         for (i = 0;i < 64*64;i++)
  22         {
  23                 data[i][0] = data[i][1] = data[i][2] = noise[i];
  24                 data[i][3] = 255;
  25         }
  26
  27         chrometexture = GL_LoadTexture ("chrometexture", 64, 64, &data[0][0], true, false, 4);
  28 }
  29
  30 void gl_models_start()
  31 {
  32         // allocate vertex processing arrays
  33         aliasvert = malloc(sizeof(float[MD2MAX_VERTS][3]));
  34         aliasvertnorm = malloc(sizeof(float[MD2MAX_VERTS][3]));
  35         aliasvertcolor = malloc(sizeof(byte[MD2MAX_VERTS][4]));
  36         aliasvertcolor2 = malloc(sizeof(byte[MD2MAX_VERTS][4])); // used temporarily for tinted coloring
  37         makechrometexture();
  38 }
  39
  40 void gl_models_shutdown()
  41 {
  42         free(aliasvert);
  43         free(aliasvertnorm);
  44         free(aliasvertcolor);
  45         free(aliasvertcolor2);
  46 }
  47
  48 void GL_Models_Init()
  49 {
  50         R_RegisterModule("GL_Models", gl_models_start, gl_models_shutdown);
  51 }
  52
  53 extern vec3_t softwaretransform_x;
  54 extern vec3_t softwaretransform_y;
  55 extern vec3_t softwaretransform_z;
  56 extern vec_t softwaretransform_scale;
  57 extern vec3_t softwaretransform_offset;
  58 void R_AliasLerpVerts(int vertcount, float lerp, trivert2 *verts1, vec3_t scale1, vec3_t translate1, trivert2 *verts2, vec3_t scale2, vec3_t translate2)
  59 {
  60         int i;
  61         vec3_t point, matrix_x, matrix_y, matrix_z;
  62         float *av, *avn;
  63         av = aliasvert;
  64         avn = aliasvertnorm;
  65         VectorScale(softwaretransform_x, softwaretransform_scale, matrix_x);
  66         VectorScale(softwaretransform_y, softwaretransform_scale, matrix_y);
  67         VectorScale(softwaretransform_z, softwaretransform_scale, matrix_z);
  68         if (lerp < 0) lerp = 0;
  69         if (lerp > 1) lerp = 1;
  70         if (lerp != 0)
  71         {
  72                 float ilerp, ilerp127, lerp127, scalex1, scalex2, translatex, scaley1, scaley2, translatey, scalez1, scalez2, translatez;
  73                 if (lerp < 0) lerp = 0;
  74                 if (lerp > 1) lerp = 1;
  75                 ilerp = 1 - lerp;
  76                 ilerp127 = ilerp * (1.0 / 127.0);
  77                 lerp127 = lerp * (1.0 / 127.0);
  78                 // calculate combined interpolation variables
  79                 scalex1 = scale1[0] * ilerp;scalex2 = scale2[0] *  lerp;translatex = translate1[0] * ilerp + translate2[0] *  lerp;
  80                 scaley1 = scale1[1] * ilerp;scaley2 = scale2[1] *  lerp;translatey = translate1[1] * ilerp + translate2[1] *  lerp;
  81                 scalez1 = scale1[2] * ilerp;scalez2 = scale2[2] *  lerp;translatez = translate1[2] * ilerp + translate2[2] *  lerp;
  82                 // generate vertices
  83                 for (i = 0;i < vertcount;i++)
  84                 {
  85                         // rotate, scale, and translate the vertex locations
  86                         point[0] = verts1->v[0] * scalex1 + verts2->v[0] * scalex2 + translatex;
  87                         point[1] = verts1->v[1] * scaley1 + verts2->v[1] * scaley2 + translatey;
  88                         point[2] = verts1->v[2] * scalez1 + verts2->v[2] * scalez2 + translatez;
  89                         *av++ = point[0] * matrix_x[0] + point[1] * matrix_y[0] + point[2] * matrix_z[0] + softwaretransform_offset[0];
  90                         *av++ = point[0] * matrix_x[1] + point[1] * matrix_y[1] + point[2] * matrix_z[1] + softwaretransform_offset[1];
  91                         *av++ = point[0] * matrix_x[2] + point[1] * matrix_y[2] + point[2] * matrix_z[2] + softwaretransform_offset[2];
  92                         // rotate the normals
  93                         point[0] = verts1->n[0] * ilerp127 + verts2->n[0] * lerp127;
  94                         point[1] = verts1->n[1] * ilerp127 + verts2->n[1] * lerp127;
  95                         point[2] = verts1->n[2] * ilerp127 + verts2->n[2] * lerp127;
  96                         *avn++ = point[0] * softwaretransform_x[0] + point[1] * softwaretransform_y[0] + point[2] * softwaretransform_z[0];
  97                         *avn++ = point[0] * softwaretransform_x[1] + point[1] * softwaretransform_y[1] + point[2] * softwaretransform_z[1];
  98                         *avn++ = point[0] * softwaretransform_x[2] + point[1] * softwaretransform_y[2] + point[2] * softwaretransform_z[2];
  99                         verts1++;verts2++;
 100                 }
 101         }
 102         else
 103         {
 104                 // generate vertices
 105                 for (i = 0;i < vertcount;i++)
 106                 {
 107                         // rotate, scale, and translate the vertex locations
 108                         point[0] = verts1->v[0] * scale1[0] + translate1[0];
 109                         point[1] = verts1->v[1] * scale1[1] + translate1[1];
 110                         point[2] = verts1->v[2] * scale1[2] + translate1[2];
 111                         *av++ = point[0] * matrix_x[0] + point[1] * matrix_y[0] + point[2] * matrix_z[0] + softwaretransform_offset[0];
 112                         *av++ = point[0] * matrix_x[1] + point[1] * matrix_y[1] + point[2] * matrix_z[1] + softwaretransform_offset[1];
 113                         *av++ = point[0] * matrix_x[2] + point[1] * matrix_y[2] + point[2] * matrix_z[2] + softwaretransform_offset[2];
 114                         // rotate the normals
 115                         point[0] = verts1->n[0] * (1.0f / 127.0f);
 116                         point[1] = verts1->n[1] * (1.0f / 127.0f);
 117                         point[2] = verts1->n[2] * (1.0f / 127.0f);
 118                         *avn++ = point[0] * softwaretransform_x[0] + point[1] * softwaretransform_y[0] + point[2] * softwaretransform_z[0];
 119                         *avn++ = point[0] * softwaretransform_x[1] + point[1] * softwaretransform_y[1] + point[2] * softwaretransform_z[1];
 120                         *avn++ = point[0] * softwaretransform_x[2] + point[1] * softwaretransform_y[2] + point[2] * softwaretransform_z[2];
 121                         verts1++;
 122                 }
 123         }
 124 }
 125
 126 float R_CalcAnimLerp(entity_t *ent, int pose, float lerpscale)
 127 {
 128         if (ent->draw_lastmodel == ent->model && ent->draw_lerpstart <= cl.time)
 129         {
 130                 if (pose != ent->draw_pose)
 131                 {
 132                         ent->draw_lastpose = ent->draw_pose;
 133                         ent->draw_pose = pose;
 134                         ent->draw_lerpstart = cl.time;
 135                         return 0;
 136                 }
 137                 else
 138                         return ((cl.time - ent->draw_lerpstart) * lerpscale);
 139         }
 140         else // uninitialized
 141         {
 142                 ent->draw_lastmodel = ent->model;
 143                 ent->draw_lastpose = ent->draw_pose = pose;
 144                 ent->draw_lerpstart = cl.time;
 145                 return 0;
 146         }
 147 }
 148
 149 extern cvar_t gl_vertexarrays;
 150 extern qboolean lighthalf;
 151 void GL_DrawModelMesh(int skin, byte *colors, maliashdr_t *maliashdr)
 152 {
 153         int i;
 154         if (!r_render.value)
 155                 return;
 156         glBindTexture(GL_TEXTURE_2D, skin);
 157         if (!colors)
 158         {
 159                 if (lighthalf)
 160                         glColor3f(0.5f, 0.5f, 0.5f);
 161                 else
 162                         glColor3f(1.0f, 1.0f, 1.0f);
 163         }
 164         if (gl_vertexarrays.value)
 165         {
 166                 if (colors)
 167                 {
 168                         qglColorPointer(4, GL_UNSIGNED_BYTE, 0, colors);
 169                         glEnableClientState(GL_COLOR_ARRAY);
 170                 }
 171
 172                 qglTexCoordPointer(2, GL_FLOAT, 0, (void *)((int) maliashdr->texdata + (int) maliashdr));
 173                 glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 174
 175                 qglDrawElements(GL_TRIANGLES, maliashdr->numtris * 3, GL_UNSIGNED_SHORT, (void *)((int) maliashdr + maliashdr->tridata));
 176
 177                 glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 178
 179                 if (colors)
 180                         glDisableClientState(GL_COLOR_ARRAY);
 181         }
 182         else
 183         {
 184                 unsigned short *in, index;
 185                 float *tex;
 186                 in = (void *)((int) maliashdr + maliashdr->tridata);
 187                 glBegin(GL_TRIANGLES);
 188                 tex = (void *)((int) maliashdr + maliashdr->texdata);
 189                 for (i = 0;i < maliashdr->numtris * 3;i++)
 190                 {
 191                         index = *in++;
 192                         glTexCoord2f(tex[index*2], tex[index*2+1]);
 193                         if (colors)
 194                                 glColor4f(colors[index*4] * (1.0f / 255.0f), colors[index*4+1] * (1.0f / 255.0f), colors[index*4+2] * (1.0f / 255.0f), colors[index*4+3] * (1.0f / 255.0f));
 195                         glVertex3fv(&aliasvert[index*3]);
 196                 }
 197                 glEnd();
 198         }
 199         // leave it in a state for additional passes
 200         glDepthMask(0);
 201         glEnable(GL_BLEND);
 202         glBlendFunc(GL_SRC_ALPHA, GL_ONE); // additive
 203 }
 204
 205 void R_TintModel(byte *in, byte *out, int verts, byte *color)
 206 {
 207         int i;
 208         byte r = color[0];
 209         byte g = color[1];
 210         byte b = color[2];
 211         for (i = 0;i < verts;i++)
 212         {
 213                 out[0] = (byte) ((in[0] * r) >> 8);
 214                 out[1] = (byte) ((in[1] * g) >> 8);
 215                 out[2] = (byte) ((in[2] * b) >> 8);
 216                 out[3] =          in[3];
 217                 in += 4;
 218                 out += 4;
 219         }
 220 }
 221
 222 /*
 223 =================
 224 R_DrawAliasFrame
 225
 226 =================
 227 */
 228 extern vec3_t lightspot;
 229 void R_LightModel(int numverts, vec3_t center, vec3_t basecolor);
 230 void R_DrawAliasFrame (maliashdr_t *maliashdr, float alpha, vec3_t color, entity_t *ent, int shadow, vec3_t org, int frame, int *skin, int colormap, int effects, int flags)
 231 {
 232         int             i, pose;
 233         float   lerpscale, lerp;
 234         maliasframe_t *frameinfo;
 235
 236         softwaretransformforentity(ent);
 237
 238         if ((frame >= maliashdr->numframes) || (frame < 0))
 239         {
 240                 Con_DPrintf ("R_AliasSetupFrame: no such frame %d\n", frame);
 241                 frame = 0;
 242         }
 243
 244         frameinfo = ((maliasframe_t *)((int) maliashdr + maliashdr->framedata)) + frame;
 245         pose = frameinfo->start;
 246
 247         if (frameinfo->length > 1)
 248         {
 249                 lerpscale = frameinfo->rate;
 250                 pose += (int)(cl.time * frameinfo->rate) % frameinfo->length;
 251         }
 252         else
 253                 lerpscale = 10.0f;
 254
 255         lerp = R_CalcAnimLerp(ent, pose, lerpscale);
 256
 257         R_AliasLerpVerts(maliashdr->numverts, lerp, (trivert2 *)((int) maliashdr + maliashdr->posedata) + ent->draw_lastpose * maliashdr->numverts, maliashdr->scale, maliashdr->scale_origin, (trivert2 *)((int) maliashdr + maliashdr->posedata) + ent->draw_pose * maliashdr->numverts, maliashdr->scale, maliashdr->scale_origin);
 258
 259         // prep the vertex array as early as possible
 260         if (r_render.value)
 261         {
 262                 if (gl_vertexarrays.value)
 263                 {
 264                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 265                         glEnableClientState(GL_VERTEX_ARRAY);
 266                 }
 267         }
 268
 269         R_LightModel(maliashdr->numverts, org, color);
 270
 271         if (!r_render.value)
 272                 return;
 273         glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE);
 274         glShadeModel(GL_SMOOTH);
 275         if (effects & EF_ADDITIVE)
 276         {
 277                 glBlendFunc(GL_SRC_ALPHA, GL_ONE); // additive rendering
 278                 glEnable(GL_BLEND);
 279                 glDepthMask(0);
 280         }
 281         else if (alpha != 1.0)
 282         {
 283                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 284                 glEnable(GL_BLEND);
 285                 glDepthMask(0);
 286         }
 287         else
 288         {
 289                 glDisable(GL_BLEND);
 290                 glDepthMask(1);
 291         }
 292
 293         if (colormap >= 0)
 294         {
 295                 if (!skin[0] && !skin[1] && !skin[2] && !skin[3])
 296                         GL_DrawModelMesh(0, NULL, maliashdr);
 297                 else
 298                 {
 299                         int c;
 300                         if (skin[0])
 301                                 GL_DrawModelMesh(skin[0], aliasvertcolor, maliashdr);
 302                         if (skin[1])
 303                         {
 304                                 c = (colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12; // 128-224 are backwards ranges
 305                                 R_TintModel(aliasvertcolor, aliasvertcolor2, maliashdr->numverts, (byte *) (&d_8to24table[c]));
 306                                 GL_DrawModelMesh(skin[1], aliasvertcolor2, maliashdr);
 307                         }
 308                         if (skin[2])
 309                         {
 310                                 c = colormap & 0xF0      ;c += (c >= 128 && c < 224) ? 4 : 12; // 128-224 are backwards ranges
 311                                 R_TintModel(aliasvertcolor, aliasvertcolor2, maliashdr->numverts, (byte *) (&d_8to24table[c]));
 312                                 GL_DrawModelMesh(skin[2], aliasvertcolor2, maliashdr);
 313                         }
 314                         if (skin[3]) GL_DrawModelMesh(skin[3], NULL, maliashdr);
 315                 }
 316         }
 317         else
 318         {
 319                 if (!skin[3] && !skin[4])
 320                         GL_DrawModelMesh(0, NULL, maliashdr);
 321                 else
 322                 {
 323                         if (skin[4]) GL_DrawModelMesh(skin[4], aliasvertcolor, maliashdr);
 324                         if (skin[3]) GL_DrawModelMesh(skin[3], NULL, maliashdr);
 325                 }
 326         }
 327
 328         if (fogenabled)
 329         {
 330                 vec3_t diff;
 331                 glDisable (GL_TEXTURE_2D);
 332                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 333                 glEnable (GL_BLEND);
 334                 glDepthMask(0); // disable zbuffer updates
 335
 336                 VectorSubtract(org, r_refdef.vieworg, diff);
 337                 glColor4f(fogcolor[0], fogcolor[1], fogcolor[2], exp(fogdensity/DotProduct(diff,diff)));
 338
 339                 if (gl_vertexarrays.value)
 340                 {
 341                         qglDrawElements(GL_TRIANGLES, maliashdr->numtris * 3, GL_UNSIGNED_SHORT, (void *)((int) maliashdr + maliashdr->tridata));
 342                 }
 343                 else
 344                 {
 345                         unsigned short *in;
 346                         in = (void *)((int) maliashdr + maliashdr->tridata);
 347                         glBegin(GL_TRIANGLES);
 348                         for (i = 0;i < maliashdr->numtris * 3;i++)
 349                                 glVertex3fv(&aliasvert[*in++ * 3]);
 350                         glEnd();
 351                 }
 352
 353                 glEnable (GL_TEXTURE_2D);
 354                 glColor3f (1,1,1);
 355         }
 356         if (gl_vertexarrays.value)
 357                 glDisableClientState(GL_VERTEX_ARRAY);
 358
 359         if (!fogenabled && r_shadows.value && !(effects & EF_ADDITIVE) && shadow)
 360         {
 361                 // flatten it to make a shadow
 362                 float *av = aliasvert + 2, l = lightspot[2] + 0.125;
 363                 av = aliasvert + 2;
 364                 for (i = 0;i < maliashdr->numverts;i++, av+=3)
 365                         if (*av > l)
 366                                 *av = l;
 367                 glDisable (GL_TEXTURE_2D);
 368                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 369                 glEnable (GL_BLEND);
 370                 glDepthMask(0); // disable zbuffer updates
 371                 glColor4f (0,0,0,0.5 * alpha);
 372
 373                 if (gl_vertexarrays.value)
 374                 {
 375                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 376                         glEnableClientState(GL_VERTEX_ARRAY);
 377                         qglDrawElements(GL_TRIANGLES, maliashdr->numtris * 3, GL_UNSIGNED_SHORT, (void *)((int) maliashdr + maliashdr->tridata));
 378                         glDisableClientState(GL_VERTEX_ARRAY);
 379                 }
 380                 else
 381                 {
 382                         unsigned short *in;
 383                         in = (void *)((int) maliashdr + maliashdr->tridata);
 384                         glBegin(GL_TRIANGLES);
 385                         for (i = 0;i < maliashdr->numtris * 3;i++)
 386                                 glVertex3fv(&aliasvert[*in++ * 3]);
 387                         glEnd();
 388                 }
 389
 390                 glEnable (GL_TEXTURE_2D);
 391                 glColor3f (1,1,1);
 392         }
 393
 394         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 395         glEnable (GL_BLEND);
 396         glDepthMask(1);
 397 }
 398
 399 /*
 400 =================
 401 R_DrawQ2AliasFrame
 402
 403 =================
 404 */
 405 void R_DrawQ2AliasFrame (md2mem_t *pheader, float alpha, vec3_t color, entity_t *ent, int shadow, vec3_t org, int frame, int skin, int effects, int flags)
 406 {
 407         int *order, count;
 408         float lerp;
 409         md2memframe_t *frame1, *frame2;
 410
 411         if (r_render.value)
 412                 glBindTexture(GL_TEXTURE_2D, skin);
 413
 414         softwaretransformforentity(ent);
 415
 416         if ((frame >= pheader->num_frames) || (frame < 0))
 417         {
 418                 Con_DPrintf ("R_SetupQ2AliasFrame: no such frame %d\n", frame);
 419                 frame = 0;
 420         }
 421
 422         lerp = R_CalcAnimLerp(ent, frame, 10);
 423
 424         frame1 = (void *)((int) pheader + pheader->ofs_frames + (pheader->framesize * ent->draw_lastpose));
 425         frame2 = (void *)((int) pheader + pheader->ofs_frames + (pheader->framesize * ent->draw_pose));
 426         R_AliasLerpVerts(pheader->num_xyz, lerp, frame1->verts, frame1->scale, frame1->translate, frame2->verts, frame2->scale, frame2->translate);
 427
 428         R_LightModel(pheader->num_xyz, org, color);
 429
 430         if (!r_render.value)
 431                 return;
 432         if (gl_vertexarrays.value)
 433         {
 434                 // LordHavoc: big mess...
 435                 // using arrays only slightly, although it is enough to prevent duplicates
 436                 // (saving half the transforms)
 437                 qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 438                 qglColorPointer(4, GL_UNSIGNED_BYTE, 0, aliasvertcolor);
 439                 glEnableClientState(GL_VERTEX_ARRAY);
 440                 glEnableClientState(GL_COLOR_ARRAY);
 441
 442                 order = (int *)((int)pheader + pheader->ofs_glcmds);
 443                 while(1)
 444                 {
 445                         if (!(count = *order++))
 446                                 break;
 447                         if (count > 0)
 448                                 glBegin(GL_TRIANGLE_STRIP);
 449                         else
 450                         {
 451                                 glBegin(GL_TRIANGLE_FAN);
 452                                 count = -count;
 453                         }
 454                         do
 455                         {
 456                                 glTexCoord2f(((float *)order)[0], ((float *)order)[1]);
 457                                 qglArrayElement(order[2]);
 458                                 order += 3;
 459                         }
 460                         while (count--);
 461                 }
 462
 463                 glDisableClientState(GL_COLOR_ARRAY);
 464                 glDisableClientState(GL_VERTEX_ARRAY);
 465         }
 466         else
 467         {
 468                 order = (int *)((int)pheader + pheader->ofs_glcmds);
 469                 while(1)
 470                 {
 471                         if (!(count = *order++))
 472                                 break;
 473                         if (count > 0)
 474                                 glBegin(GL_TRIANGLE_STRIP);
 475                         else
 476                         {
 477                                 glBegin(GL_TRIANGLE_FAN);
 478                                 count = -count;
 479                         }
 480                         do
 481                         {
 482                                 glTexCoord2f(((float *)order)[0], ((float *)order)[1]);
 483                                 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));
 484                                 glVertex3fv(&aliasvert[order[2] * 3]);
 485                                 order += 3;
 486                         }
 487                         while (count--);
 488                 }
 489         }
 490
 491         if (fogenabled)
 492         {
 493                 glDisable (GL_TEXTURE_2D);
 494                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 495                 glEnable (GL_BLEND);
 496                 glDepthMask(0); // disable zbuffer updates
 497                 {
 498                         vec3_t diff;
 499                         VectorSubtract(org, r_refdef.vieworg, diff);
 500                         glColor4f(fogcolor[0], fogcolor[1], fogcolor[2], exp(fogdensity/DotProduct(diff,diff)));
 501                 }
 502
 503                 if (gl_vertexarrays.value)
 504                 {
 505                         // LordHavoc: big mess...
 506                         // using arrays only slightly, although it is enough to prevent duplicates
 507                         // (saving half the transforms)
 508                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 509                         glEnableClientState(GL_VERTEX_ARRAY);
 510
 511                         order = (int *)((int)pheader + pheader->ofs_glcmds);
 512                         while(1)
 513                         {
 514                                 if (!(count = *order++))
 515                                         break;
 516                                 if (count > 0)
 517                                         glBegin(GL_TRIANGLE_STRIP);
 518                                 else
 519                                 {
 520                                         glBegin(GL_TRIANGLE_FAN);
 521                                         count = -count;
 522                                 }
 523                                 do
 524                                 {
 525                                         qglArrayElement(order[2]);
 526                                         order += 3;
 527                                 }
 528                                 while (count--);
 529                         }
 530
 531                         glDisableClientState(GL_VERTEX_ARRAY);
 532                 }
 533                 else
 534                 {
 535                         order = (int *)((int)pheader + pheader->ofs_glcmds);
 536                         while(1)
 537                         {
 538                                 if (!(count = *order++))
 539                                         break;
 540                                 if (count > 0)
 541                                         glBegin(GL_TRIANGLE_STRIP);
 542                                 else
 543                                 {
 544                                         glBegin(GL_TRIANGLE_FAN);
 545                                         count = -count;
 546                                 }
 547                                 do
 548                                 {
 549                                         glVertex3fv(&aliasvert[order[2] * 3]);
 550                                         order += 3;
 551                                 }
 552                                 while (count--);
 553                         }
 554                 }
 555
 556                 glEnable (GL_TEXTURE_2D);
 557                 glColor3f (1,1,1);
 558         }
 559
 560         if (!fogenabled && r_shadows.value && !(effects & EF_ADDITIVE) && shadow)
 561         {
 562                 int i;
 563                 float *av = aliasvert + 2, l = lightspot[2] + 0.125;
 564                 av = aliasvert + 2;
 565                 for (i = 0;i < pheader->num_xyz;i++, av+=3)
 566                         if (*av > l)
 567                                 *av = l;
 568                 glDisable (GL_TEXTURE_2D);
 569                 glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 570                 glEnable (GL_BLEND);
 571                 glDepthMask(0); // disable zbuffer updates
 572                 glColor4f (0,0,0,0.5 * alpha);
 573
 574                 if (gl_vertexarrays.value)
 575                 {
 576                         qglVertexPointer(3, GL_FLOAT, 0, aliasvert);
 577                         glEnableClientState(GL_VERTEX_ARRAY);
 578
 579                         while(1)
 580                         {
 581                                 if (!(count = *order++))
 582                                         break;
 583                                 if (count > 0)
 584                                         glBegin(GL_TRIANGLE_STRIP);
 585                                 else
 586                                 {
 587                                         glBegin(GL_TRIANGLE_FAN);
 588                                         count = -count;
 589                                 }
 590                                 do
 591                                 {
 592                                         qglArrayElement(order[2]);
 593                                         order += 3;
 594                                 }
 595                                 while (count--);
 596                         }
 597
 598                         glDisableClientState(GL_VERTEX_ARRAY);
 599                 }
 600                 else
 601                 {
 602                         while(1)
 603                         {
 604                                 if (!(count = *order++))
 605                                         break;
 606                                 if (count > 0)
 607                                         glBegin(GL_TRIANGLE_STRIP);
 608                                 else
 609                                 {
 610                                         glBegin(GL_TRIANGLE_FAN);
 611                                         count = -count;
 612                                 }
 613                                 do
 614                                 {
 615                                         glVertex3fv(&aliasvert[order[2] * 3]);
 616                                         order += 3;
 617                                 }
 618                                 while (count--);
 619                         }
 620                 }
 621
 622                 glEnable (GL_TEXTURE_2D);
 623                 glColor3f (1,1,1);
 624         }
 625
 626         glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 627         glEnable (GL_BLEND);
 628         glDepthMask(1);
 629 }
 630
 631 int modeldlightbits[8];
 632 extern int r_dlightframecount;
 633 extern void R_LightPoint (vec3_t color, vec3_t p);
 634
 635 /*
 636 =================
 637 R_DrawAliasModel
 638
 639 =================
 640 */
 641 void R_DrawAliasModel (entity_t *ent, int cull, float alpha, model_t *clmodel, int frame, int skin, vec3_t org, int effects, int flags, int colormap)
 642 {
 643         int                     i;
 644         vec3_t          mins, maxs, color;
 645         mleaf_t         *leaf;
 646         void            *modelheader;
 647         int                     *skinset;
 648
 649         if (alpha < (1.0 / 64.0))
 650                 return; // basically completely transparent
 651
 652         VectorAdd (org, clmodel->mins, mins);
 653         VectorAdd (org, clmodel->maxs, maxs);
 654
 655         if (cull && R_CullBox (mins, maxs))
 656                 return;
 657
 658         leaf = Mod_PointInLeaf (org, cl.worldmodel);
 659         if (leaf->dlightframe == r_dlightframecount)
 660                 for (i = 0;i < 8;i++)
 661                         modeldlightbits[i] = leaf->dlightbits[i];
 662         else
 663                 for (i = 0;i < 8;i++)
 664                         modeldlightbits[i] = 0;
 665
 666         // get lighting information
 667
 668         if ((flags & EF_FULLBRIGHT) || (effects & EF_FULLBRIGHT))
 669                 color[0] = color[1] = color[2] = 256;
 670         else
 671                 R_LightPoint (color, org);
 672
 673         if (r_render.value)
 674                 glDisable(GL_ALPHA_TEST);
 675
 676         if (frame < 0 || frame >= clmodel->numframes)
 677         {
 678                 frame = 0;
 679                 Con_DPrintf("invalid skin number %d for model %s\n", frame, clmodel->name);
 680         }
 681
 682         if (skin < 0 || skin >= clmodel->numskins)
 683         {
 684                 skin = 0;
 685                 Con_DPrintf("invalid skin number %d for model %s\n", skin, clmodel->name);
 686         }
 687
 688         modelheader = Mod_Extradata (clmodel);
 689
 690         {
 691 //              int *skinanimrange = (int *) (clmodel->skinanimrange + (int) modelheader) + skin * 2;
 692 //              int *skinanim = (int *) (clmodel->skinanim + (int) modelheader);
 693                 int *skinanimrange = clmodel->skinanimrange + skin * 2;
 694                 int *skinanim = clmodel->skinanim;
 695                 i = skinanimrange[0];
 696                 if (skinanimrange[1] > 1) // animated
 697                         i += ((int) (cl.time * 10) % skinanimrange[1]);
 698                 skinset = skinanim + i*5;
 699         }
 700
 701         if (r_render.value)
 702                 glEnable (GL_TEXTURE_2D);
 703
 704         c_alias_polys += clmodel->numtris;
 705         if (clmodel->aliastype == ALIASTYPE_MD2)
 706                 R_DrawQ2AliasFrame (modelheader, alpha, color, ent, ent != &cl.viewent, org, frame, skinset[0], effects, flags);
 707         else
 708                 R_DrawAliasFrame (modelheader, alpha, color, ent, ent != &cl.viewent, org, frame, skinset, colormap, effects, flags);
 709 }