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