gl_models.c

   1
   2 #include "quakedef.h"
   3 #include "cl_collision.h"
   4
   5 cvar_t r_quickmodels = {0, "r_quickmodels", "1"};
   6
   7 typedef struct
   8 {
   9         float m[3][4];
  10 } zymbonematrix;
  11
  12 // LordHavoc: vertex arrays
  13
  14 float *aliasvertbuf;
  15 float *aliasvertcolorbuf;
  16 float *aliasvert; // this may point at aliasvertbuf or at vertex arrays in the mesh backend
  17 float *aliasvertcolor; // this may point at aliasvertcolorbuf or at vertex arrays in the mesh backend
  18
  19 float *aliasvertcolor2;
  20 float *aliasvertnorm;
  21 int *aliasvertusage;
  22 zymbonematrix *zymbonepose;
  23
  24 mempool_t *gl_models_mempool;
  25
  26 void gl_models_start(void)
  27 {
  28         // allocate vertex processing arrays
  29         gl_models_mempool = Mem_AllocPool("GL_Models");
  30         aliasvert = aliasvertbuf = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4]));
  31         aliasvertcolor = aliasvertcolorbuf = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4]));
  32         aliasvertnorm = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][3]));
  33         aliasvertcolor2 = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4])); // used temporarily for tinted coloring
  34         zymbonepose = Mem_Alloc(gl_models_mempool, sizeof(zymbonematrix[256]));
  35         aliasvertusage = Mem_Alloc(gl_models_mempool, sizeof(int[MD2MAX_VERTS]));
  36 }
  37
  38 void gl_models_shutdown(void)
  39 {
  40         Mem_FreePool(&gl_models_mempool);
  41 }
  42
  43 void gl_models_newmap(void)
  44 {
  45 }
  46
  47 void GL_Models_Init(void)
  48 {
  49         Cvar_RegisterVariable(&r_quickmodels);
  50
  51         R_RegisterModule("GL_Models", gl_models_start, gl_models_shutdown, gl_models_newmap);
  52 }
  53
  54 /*
  55 void R_AliasTransformVerts(int vertcount)
  56 {
  57         vec3_t point;
  58         float *av;
  59         av = aliasvert;
  60         while (vertcount >= 4)
  61         {
  62                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  63                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  64                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  65                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  66                 vertcount -= 4;
  67         }
  68         while(vertcount > 0)
  69         {
  70                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  71                 vertcount--;
  72         }
  73 }
  74 */
  75
  76 void R_AliasLerpVerts(int vertcount, float *vertices, float *normals,
  77                 float lerp1, const trivertx_t *verts1, const vec3_t fscale1, const vec3_t translate1,
  78                 float lerp2, const trivertx_t *verts2, const vec3_t fscale2, const vec3_t translate2,
  79                 float lerp3, const trivertx_t *verts3, const vec3_t fscale3, const vec3_t translate3,
  80                 float lerp4, const trivertx_t *verts4, const vec3_t fscale4, const vec3_t translate4)
  81 {
  82         int i;
  83         vec3_t scale1, scale2, scale3, scale4, translate;
  84         const float *n1, *n2, *n3, *n4;
  85         float *av, *avn;
  86         av = vertices;
  87         avn = normals;
  88         VectorScale(fscale1, lerp1, scale1);
  89         if (lerp2)
  90         {
  91                 VectorScale(fscale2, lerp2, scale2);
  92                 if (lerp3)
  93                 {
  94                         VectorScale(fscale3, lerp3, scale3);
  95                         if (lerp4)
  96                         {
  97                                 VectorScale(fscale4, lerp4, scale4);
  98                                 translate[0] = translate1[0] * lerp1 + translate2[0] * lerp2 + translate3[0] * lerp3 + translate4[0] * lerp4;
  99                                 translate[1] = translate1[1] * lerp1 + translate2[1] * lerp2 + translate3[1] * lerp3 + translate4[1] * lerp4;
 100                                 translate[2] = translate1[2] * lerp1 + translate2[2] * lerp2 + translate3[2] * lerp3 + translate4[2] * lerp4;
 101                                 // generate vertices
 102                                 for (i = 0;i < vertcount;i++)
 103                                 {
 104                                         av[0] = verts1->v[0] * scale1[0] + verts2->v[0] * scale2[0] + verts3->v[0] * scale3[0] + verts4->v[0] * scale4[0] + translate[0];
 105                                         av[1] = verts1->v[1] * scale1[1] + verts2->v[1] * scale2[1] + verts3->v[1] * scale3[1] + verts4->v[1] * scale4[1] + translate[1];
 106                                         av[2] = verts1->v[2] * scale1[2] + verts2->v[2] * scale2[2] + verts3->v[2] * scale3[2] + verts4->v[2] * scale4[2] + translate[2];
 107                                         n1 = m_bytenormals[verts1->lightnormalindex];
 108                                         n2 = m_bytenormals[verts2->lightnormalindex];
 109                                         n3 = m_bytenormals[verts3->lightnormalindex];
 110                                         n4 = m_bytenormals[verts4->lightnormalindex];
 111                                         avn[0] = n1[0] * lerp1 + n2[0] * lerp2 + n3[0] * lerp3 + n4[0] * lerp4;
 112                                         avn[1] = n1[1] * lerp1 + n2[1] * lerp2 + n3[1] * lerp3 + n4[1] * lerp4;
 113                                         avn[2] = n1[2] * lerp1 + n2[2] * lerp2 + n3[2] * lerp3 + n4[2] * lerp4;
 114                                         av += 4;
 115                                         avn += 3;
 116                                         verts1++;verts2++;verts3++;verts4++;
 117                                 }
 118                         }
 119                         else
 120                         {
 121                                 translate[0] = translate1[0] * lerp1 + translate2[0] * lerp2 + translate3[0] * lerp3;
 122                                 translate[1] = translate1[1] * lerp1 + translate2[1] * lerp2 + translate3[1] * lerp3;
 123                                 translate[2] = translate1[2] * lerp1 + translate2[2] * lerp2 + translate3[2] * lerp3;
 124                                 // generate vertices
 125                                 for (i = 0;i < vertcount;i++)
 126                                 {
 127                                         av[0] = verts1->v[0] * scale1[0] + verts2->v[0] * scale2[0] + verts3->v[0] * scale3[0] + translate[0];
 128                                         av[1] = verts1->v[1] * scale1[1] + verts2->v[1] * scale2[1] + verts3->v[1] * scale3[1] + translate[1];
 129                                         av[2] = verts1->v[2] * scale1[2] + verts2->v[2] * scale2[2] + verts3->v[2] * scale3[2] + translate[2];
 130                                         n1 = m_bytenormals[verts1->lightnormalindex];
 131                                         n2 = m_bytenormals[verts2->lightnormalindex];
 132                                         n3 = m_bytenormals[verts3->lightnormalindex];
 133                                         avn[0] = n1[0] * lerp1 + n2[0] * lerp2 + n3[0] * lerp3;
 134                                         avn[1] = n1[1] * lerp1 + n2[1] * lerp2 + n3[1] * lerp3;
 135                                         avn[2] = n1[2] * lerp1 + n2[2] * lerp2 + n3[2] * lerp3;
 136                                         av += 4;
 137                                         avn += 3;
 138                                         verts1++;verts2++;verts3++;
 139                                 }
 140                         }
 141                 }
 142                 else
 143                 {
 144                         translate[0] = translate1[0] * lerp1 + translate2[0] * lerp2;
 145                         translate[1] = translate1[1] * lerp1 + translate2[1] * lerp2;
 146                         translate[2] = translate1[2] * lerp1 + translate2[2] * lerp2;
 147                         // generate vertices
 148                         for (i = 0;i < vertcount;i++)
 149                         {
 150                                 av[0] = verts1->v[0] * scale1[0] + verts2->v[0] * scale2[0] + translate[0];
 151                                 av[1] = verts1->v[1] * scale1[1] + verts2->v[1] * scale2[1] + translate[1];
 152                                 av[2] = verts1->v[2] * scale1[2] + verts2->v[2] * scale2[2] + translate[2];
 153                                 n1 = m_bytenormals[verts1->lightnormalindex];
 154                                 n2 = m_bytenormals[verts2->lightnormalindex];
 155                                 avn[0] = n1[0] * lerp1 + n2[0] * lerp2;
 156                                 avn[1] = n1[1] * lerp1 + n2[1] * lerp2;
 157                                 avn[2] = n1[2] * lerp1 + n2[2] * lerp2;
 158                                 av += 4;
 159                                 avn += 3;
 160                                 verts1++;verts2++;
 161                         }
 162                 }
 163         }
 164         else
 165         {
 166                 translate[0] = translate1[0] * lerp1;
 167                 translate[1] = translate1[1] * lerp1;
 168                 translate[2] = translate1[2] * lerp1;
 169                 // generate vertices
 170                 if (lerp1 != 1)
 171                 {
 172                         // general but almost never used case
 173                         for (i = 0;i < vertcount;i++)
 174                         {
 175                                 av[0] = verts1->v[0] * scale1[0] + translate[0];
 176                                 av[1] = verts1->v[1] * scale1[1] + translate[1];
 177                                 av[2] = verts1->v[2] * scale1[2] + translate[2];
 178                                 n1 = m_bytenormals[verts1->lightnormalindex];
 179                                 avn[0] = n1[0] * lerp1;
 180                                 avn[1] = n1[1] * lerp1;
 181                                 avn[2] = n1[2] * lerp1;
 182                                 av += 4;
 183                                 avn += 3;
 184                                 verts1++;
 185                         }
 186                 }
 187                 else
 188                 {
 189                         // fast normal case
 190                         for (i = 0;i < vertcount;i++)
 191                         {
 192                                 av[0] = verts1->v[0] * scale1[0] + translate[0];
 193                                 av[1] = verts1->v[1] * scale1[1] + translate[1];
 194                                 av[2] = verts1->v[2] * scale1[2] + translate[2];
 195                                 VectorCopy(m_bytenormals[verts1->lightnormalindex], avn);
 196                                 av += 4;
 197                                 avn += 3;
 198                                 verts1++;
 199                         }
 200                 }
 201         }
 202 }
 203
 204 skinframe_t *R_FetchSkinFrame(const entity_render_t *ent)
 205 {
 206         model_t *model = ent->model;
 207         unsigned int s = (unsigned int) ent->skinnum;
 208         if (s >= model->numskins)
 209                 s = 0;
 210         if (model->skinscenes[s].framecount > 1)
 211                 return &model->skinframes[model->skinscenes[s].firstframe + (int) (cl.time * 10) % model->skinscenes[s].framecount];
 212         else
 213                 return &model->skinframes[model->skinscenes[s].firstframe];
 214 }
 215
 216 void R_LerpMDLMD2Vertices(const entity_render_t *ent, float *vertices, float *normals)
 217 {
 218         const md2frame_t *frame1, *frame2, *frame3, *frame4;
 219         const trivertx_t *frame1verts, *frame2verts, *frame3verts, *frame4verts;
 220         const model_t *model = ent->model;
 221
 222         frame1 = &model->mdlmd2data_frames[ent->frameblend[0].frame];
 223         frame2 = &model->mdlmd2data_frames[ent->frameblend[1].frame];
 224         frame3 = &model->mdlmd2data_frames[ent->frameblend[2].frame];
 225         frame4 = &model->mdlmd2data_frames[ent->frameblend[3].frame];
 226         frame1verts = &model->mdlmd2data_pose[ent->frameblend[0].frame * model->numverts];
 227         frame2verts = &model->mdlmd2data_pose[ent->frameblend[1].frame * model->numverts];
 228         frame3verts = &model->mdlmd2data_pose[ent->frameblend[2].frame * model->numverts];
 229         frame4verts = &model->mdlmd2data_pose[ent->frameblend[3].frame * model->numverts];
 230         R_AliasLerpVerts(model->numverts, vertices, normals,
 231                 ent->frameblend[0].lerp, frame1verts, frame1->scale, frame1->translate,
 232                 ent->frameblend[1].lerp, frame2verts, frame2->scale, frame2->translate,
 233                 ent->frameblend[2].lerp, frame3verts, frame3->scale, frame3->translate,
 234                 ent->frameblend[3].lerp, frame4verts, frame4->scale, frame4->translate);
 235 }
 236
 237 void R_DrawQ1Q2AliasModelCallback (const void *calldata1, int calldata2)
 238 {
 239         int i, c, pantsfullbright, shirtfullbright, colormapped, tex;
 240         float pantscolor[3], shirtcolor[3];
 241         float fog, colorscale;
 242         vec3_t diff;
 243         qbyte *bcolor;
 244         rmeshstate_t m;
 245         model_t *model;
 246         skinframe_t *skinframe;
 247         const entity_render_t *ent = calldata1;
 248         int blendfunc1, blendfunc2;
 249
 250 //      softwaretransformforentity(ent);
 251         R_Mesh_Matrix(&ent->matrix);
 252
 253         fog = 0;
 254         if (fogenabled)
 255         {
 256                 VectorSubtract(ent->origin, r_origin, diff);
 257                 fog = DotProduct(diff,diff);
 258                 if (fog < 0.01f)
 259                         fog = 0.01f;
 260                 fog = exp(fogdensity/fog);
 261                 if (fog > 1)
 262                         fog = 1;
 263                 if (fog < 0.01f)
 264                         fog = 0;
 265                 // fog method: darken, additive fog
 266                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 267                 // 2. render fog as additive
 268         }
 269
 270         model = ent->model;
 271         R_Mesh_ResizeCheck(model->numverts);
 272
 273         skinframe = R_FetchSkinFrame(ent);
 274
 275         if (ent->effects & EF_ADDITIVE)
 276         {
 277                 blendfunc1 = GL_SRC_ALPHA;
 278                 blendfunc2 = GL_ONE;
 279         }
 280         else if (ent->alpha != 1.0 || skinframe->fog != NULL)
 281         {
 282                 blendfunc1 = GL_SRC_ALPHA;
 283                 blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 284         }
 285         else
 286         {
 287                 blendfunc1 = GL_ONE;
 288                 blendfunc2 = GL_ZERO;
 289         }
 290
 291         colorscale = r_colorscale;
 292         if (gl_combine.integer)
 293                 colorscale *= 0.25f;
 294
 295         if (!skinframe->base && !skinframe->pants && !skinframe->shirt && !skinframe->glow)
 296         {
 297                 // untextured
 298                 memset(&m, 0, sizeof(m));
 299                 m.blendfunc1 = blendfunc1;
 300                 m.blendfunc2 = blendfunc2;
 301                 if (gl_combine.integer)
 302                         m.texrgbscale[0] = 4;
 303                 m.tex[0] = R_GetTexture(r_notexture);
 304                 R_Mesh_State(&m);
 305
 306                 c_alias_polys += model->numtris;
 307                 for (i = 0;i < model->numverts * 2;i++)
 308                         varray_texcoord[0][i] = model->mdlmd2data_texcoords[i] * 8.0f;
 309                 aliasvert = varray_vertex;
 310                 aliasvertcolor = varray_color;
 311                 R_LerpMDLMD2Vertices(ent, aliasvert, aliasvertnorm);
 312                 R_LightModel(ent, model->numverts, colorscale, colorscale, colorscale, false);
 313                 aliasvert = aliasvertbuf;
 314                 aliasvertcolor = aliasvertcolorbuf;
 315                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 316                 return;
 317         }
 318
 319
 320         colormapped = !skinframe->merged || (ent->colormap >= 0 && skinframe->base && (skinframe->pants || skinframe->shirt));
 321         if (!colormapped && !fog && !skinframe->glow && !skinframe->fog)
 322         {
 323                 // fastpath for the normal situation (one texture)
 324                 memset(&m, 0, sizeof(m));
 325                 m.blendfunc1 = blendfunc1;
 326                 m.blendfunc2 = blendfunc2;
 327                 if (gl_combine.integer)
 328                         m.texrgbscale[0] = 4;
 329                 m.tex[0] = R_GetTexture(skinframe->merged);
 330                 R_Mesh_State(&m);
 331
 332                 c_alias_polys += model->numtris;
 333                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 334                 aliasvert = varray_vertex;
 335                 aliasvertcolor = varray_color;
 336                 R_LerpMDLMD2Vertices(ent, aliasvert, aliasvertnorm);
 337                 R_LightModel(ent, model->numverts, colorscale, colorscale, colorscale, false);
 338                 aliasvert = aliasvertbuf;
 339                 aliasvertcolor = aliasvertcolorbuf;
 340                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 341                 return;
 342         }
 343
 344         R_LerpMDLMD2Vertices(ent, aliasvert, aliasvertnorm);
 345         R_LightModel(ent, model->numverts, colorscale * (1 - fog), colorscale * (1 - fog), colorscale * (1 - fog), false);
 346
 347         if (colormapped)
 348         {
 349                 // 128-224 are backwards ranges
 350                 c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
 351                 bcolor = (qbyte *) (&d_8to24table[c]);
 352                 pantsfullbright = c >= 224;
 353                 VectorScale(bcolor, (1.0f / 255.0f), pantscolor);
 354                 c = (ent->colormap & 0xF0);c += (c >= 128 && c < 224) ? 4 : 12;
 355                 bcolor = (qbyte *) (&d_8to24table[c]);
 356                 shirtfullbright = c >= 224;
 357                 VectorScale(bcolor, (1.0f / 255.0f), shirtcolor);
 358         }
 359         else
 360         {
 361                 pantscolor[0] = pantscolor[1] = pantscolor[2] = shirtcolor[0] = shirtcolor[1] = shirtcolor[2] = 1;
 362                 pantsfullbright = shirtfullbright = false;
 363         }
 364
 365         tex = colormapped ? R_GetTexture(skinframe->base) : R_GetTexture(skinframe->merged);
 366         if (tex)
 367         {
 368                 memset(&m, 0, sizeof(m));
 369                 m.blendfunc1 = blendfunc1;
 370                 m.blendfunc2 = blendfunc2;
 371                 if (gl_combine.integer)
 372                         m.texrgbscale[0] = 4;
 373                 m.tex[0] = tex;
 374                 R_Mesh_State(&m);
 375
 376                 blendfunc1 = GL_SRC_ALPHA;
 377                 blendfunc2 = GL_ONE;
 378                 c_alias_polys += model->numtris;
 379                 R_ModulateColors(aliasvertcolor, varray_color, model->numverts, colorscale, colorscale, colorscale);
 380                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 381                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 382                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 383         }
 384
 385         if (colormapped)
 386         {
 387                 if (skinframe->pants)
 388                 {
 389                         tex = R_GetTexture(skinframe->pants);
 390                         if (tex)
 391                         {
 392                                 memset(&m, 0, sizeof(m));
 393                                 m.blendfunc1 = blendfunc1;
 394                                 m.blendfunc2 = blendfunc2;
 395                                 if (gl_combine.integer)
 396                                         m.texrgbscale[0] = 4;
 397                                 m.tex[0] = tex;
 398                                 R_Mesh_State(&m);
 399
 400                                 blendfunc1 = GL_SRC_ALPHA;
 401                                 blendfunc2 = GL_ONE;
 402                                 c_alias_polys += model->numtris;
 403                                 if (pantsfullbright)
 404                                         R_FillColors(varray_color, model->numverts, pantscolor[0] * colorscale, pantscolor[1] * colorscale, pantscolor[2] * colorscale, ent->alpha);
 405                                 else
 406                                         R_ModulateColors(aliasvertcolor, varray_color, model->numverts, pantscolor[0] * colorscale, pantscolor[1] * colorscale, pantscolor[2] * colorscale);
 407                                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 408                                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 409                                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 410                         }
 411                 }
 412                 if (skinframe->shirt)
 413                 {
 414                         tex = R_GetTexture(skinframe->shirt);
 415                         if (tex)
 416                         {
 417                                 memset(&m, 0, sizeof(m));
 418                                 m.blendfunc1 = blendfunc1;
 419                                 m.blendfunc2 = blendfunc2;
 420                                 if (gl_combine.integer)
 421                                         m.texrgbscale[0] = 4;
 422                                 m.tex[0] = tex;
 423                                 R_Mesh_State(&m);
 424
 425                                 blendfunc1 = GL_SRC_ALPHA;
 426                                 blendfunc2 = GL_ONE;
 427                                 c_alias_polys += model->numtris;
 428                                 if (shirtfullbright)
 429                                         R_FillColors(varray_color, model->numverts, shirtcolor[0] * colorscale, shirtcolor[1] * colorscale, shirtcolor[2] * colorscale, ent->alpha);
 430                                 else
 431                                         R_ModulateColors(aliasvertcolor, varray_color, model->numverts, shirtcolor[0] * colorscale, shirtcolor[1] * colorscale, shirtcolor[2] * colorscale);
 432                                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 433                                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 434                                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 435                         }
 436                 }
 437         }
 438         if (skinframe->glow)
 439         {
 440                 tex = R_GetTexture(skinframe->glow);
 441                 if (tex)
 442                 {
 443                         memset(&m, 0, sizeof(m));
 444                         m.blendfunc1 = blendfunc1;
 445                         m.blendfunc2 = blendfunc2;
 446                         m.tex[0] = tex;
 447                         R_Mesh_State(&m);
 448
 449                         blendfunc1 = GL_SRC_ALPHA;
 450                         blendfunc2 = GL_ONE;
 451                         c_alias_polys += model->numtris;
 452                         R_FillColors(varray_color, model->numverts, (1 - fog) * r_colorscale, (1 - fog) * r_colorscale, (1 - fog) * r_colorscale, ent->alpha);
 453                         memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 454                         memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 455                         R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 456                 }
 457         }
 458         if (fog)
 459         {
 460                 memset(&m, 0, sizeof(m));
 461                 m.blendfunc1 = GL_SRC_ALPHA;
 462                 m.blendfunc2 = GL_ONE;
 463                 m.tex[0] = R_GetTexture(skinframe->fog);
 464                 R_Mesh_State(&m);
 465
 466                 c_alias_polys += model->numtris;
 467                 R_FillColors(varray_color, model->numverts, fogcolor[0] * fog * r_colorscale, fogcolor[1] * fog * r_colorscale, fogcolor[2] * fog * r_colorscale, ent->alpha);
 468                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 469                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 470                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 471         }
 472 }
 473
 474 void R_DrawQ1Q2AliasModelFakeShadow (entity_render_t *ent)
 475 {
 476         int i;
 477         rmeshstate_t m;
 478         model_t *model;
 479         float *v, planenormal[3], planedist, dist, projection[3], floororigin[3], surfnormal[3], lightdirection[3], v2[3];
 480
 481         lightdirection[0] = 0.5;
 482         lightdirection[1] = 0.2;
 483         lightdirection[2] = -1;
 484         VectorNormalizeFast(lightdirection);
 485
 486         VectorMA(ent->origin, 65536.0f, lightdirection, v2);
 487         if (CL_TraceLine(ent->origin, v2, floororigin, surfnormal, 0, false, NULL) == 1)
 488                 return;
 489
 490         R_Mesh_Matrix(&ent->matrix);
 491
 492         model = ent->model;
 493         R_Mesh_ResizeCheck(model->numverts);
 494
 495         memset(&m, 0, sizeof(m));
 496         m.blendfunc1 = GL_SRC_ALPHA;
 497         m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 498         R_Mesh_State(&m);
 499
 500         c_alias_polys += model->numtris;
 501         R_LerpMDLMD2Vertices(ent, varray_vertex, aliasvertnorm);
 502         R_FillColors(varray_color, model->numverts, 0, 0, 0, 0.5);
 503
 504         // put a light direction in the entity's coordinate space
 505         Matrix4x4_Transform3x3(&ent->inversematrix, lightdirection, projection);
 506         VectorNormalizeFast(projection);
 507
 508         // put the plane's normal in the entity's coordinate space
 509         Matrix4x4_Transform3x3(&ent->inversematrix, surfnormal, planenormal);
 510         VectorNormalizeFast(planenormal);
 511
 512         // put the plane's distance in the entity's coordinate space
 513         VectorSubtract(floororigin, ent->origin, floororigin);
 514         planedist = DotProduct(floororigin, surfnormal) + 2;
 515
 516         dist = -1.0f / DotProduct(projection, planenormal);
 517         VectorScale(projection, dist, projection);
 518         for (i = 0, v = varray_vertex;i < model->numverts;i++, v += 4)
 519         {
 520                 dist = DotProduct(v, planenormal) - planedist;
 521                 if (dist > 0)
 522                 //if (i & 1)
 523                         VectorMA(v, dist, projection, v);
 524         }
 525         R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 526 }
 527
 528 int ZymoticLerpBones(int count, const zymbonematrix *bonebase, const frameblend_t *blend, const zymbone_t *bone)
 529 {
 530         int i;
 531         float lerp1, lerp2, lerp3, lerp4;
 532         zymbonematrix *out, rootmatrix, m;
 533         const zymbonematrix *bone1, *bone2, *bone3, *bone4;
 534
 535         /*
 536         // LordHavoc: combine transform from zym coordinate space to quake coordinate space with model to world transform matrix
 537         rootmatrix.m[0][0] = softwaretransform_matrix[0][1];
 538         rootmatrix.m[0][1] = -softwaretransform_matrix[0][0];
 539         rootmatrix.m[0][2] = softwaretransform_matrix[0][2];
 540         rootmatrix.m[0][3] = softwaretransform_matrix[0][3];
 541         rootmatrix.m[1][0] = softwaretransform_matrix[1][1];
 542         rootmatrix.m[1][1] = -softwaretransform_matrix[1][0];
 543         rootmatrix.m[1][2] = softwaretransform_matrix[1][2];
 544         rootmatrix.m[1][3] = softwaretransform_matrix[1][3];
 545         rootmatrix.m[2][0] = softwaretransform_matrix[2][1];
 546         rootmatrix.m[2][1] = -softwaretransform_matrix[2][0];
 547         rootmatrix.m[2][2] = softwaretransform_matrix[2][2];
 548         rootmatrix.m[2][3] = softwaretransform_matrix[2][3];
 549         */
 550         rootmatrix.m[0][0] = 1;
 551         rootmatrix.m[0][1] = 0;
 552         rootmatrix.m[0][2] = 0;
 553         rootmatrix.m[0][3] = 0;
 554         rootmatrix.m[1][0] = 0;
 555         rootmatrix.m[1][1] = 1;
 556         rootmatrix.m[1][2] = 0;
 557         rootmatrix.m[1][3] = 0;
 558         rootmatrix.m[2][0] = 0;
 559         rootmatrix.m[2][1] = 0;
 560         rootmatrix.m[2][2] = 1;
 561         rootmatrix.m[2][3] = 0;
 562
 563         bone1 = bonebase + blend[0].frame * count;
 564         lerp1 = blend[0].lerp;
 565         if (blend[1].lerp)
 566         {
 567                 bone2 = bonebase + blend[1].frame * count;
 568                 lerp2 = blend[1].lerp;
 569                 if (blend[2].lerp)
 570                 {
 571                         bone3 = bonebase + blend[2].frame * count;
 572                         lerp3 = blend[2].lerp;
 573                         if (blend[3].lerp)
 574                         {
 575                                 // 4 poses
 576                                 bone4 = bonebase + blend[3].frame * count;
 577                                 lerp4 = blend[3].lerp;
 578                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 579                                 {
 580                                         // interpolate matrices
 581                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3 + bone4->m[0][0] * lerp4;
 582                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3 + bone4->m[0][1] * lerp4;
 583                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3 + bone4->m[0][2] * lerp4;
 584                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3 + bone4->m[0][3] * lerp4;
 585                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3 + bone4->m[1][0] * lerp4;
 586                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3 + bone4->m[1][1] * lerp4;
 587                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3 + bone4->m[1][2] * lerp4;
 588                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3 + bone4->m[1][3] * lerp4;
 589                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3 + bone4->m[2][0] * lerp4;
 590                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3 + bone4->m[2][1] * lerp4;
 591                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3 + bone4->m[2][2] * lerp4;
 592                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3 + bone4->m[2][3] * lerp4;
 593                                         if (bone->parent >= 0)
 594                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 595                                         else
 596                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 597                                         bone1++;
 598                                         bone2++;
 599                                         bone3++;
 600                                         bone4++;
 601                                         bone++;
 602                                 }
 603                         }
 604                         else
 605                         {
 606                                 // 3 poses
 607                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 608                                 {
 609                                         // interpolate matrices
 610                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3;
 611                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3;
 612                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3;
 613                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3;
 614                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3;
 615                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3;
 616                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3;
 617                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3;
 618                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3;
 619                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3;
 620                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3;
 621                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3;
 622                                         if (bone->parent >= 0)
 623                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 624                                         else
 625                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 626                                         bone1++;
 627                                         bone2++;
 628                                         bone3++;
 629                                         bone++;
 630                                 }
 631                         }
 632                 }
 633                 else
 634                 {
 635                         // 2 poses
 636                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 637                         {
 638                                 // interpolate matrices
 639                                 m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2;
 640                                 m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2;
 641                                 m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2;
 642                                 m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2;
 643                                 m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2;
 644                                 m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2;
 645                                 m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2;
 646                                 m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2;
 647                                 m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2;
 648                                 m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2;
 649                                 m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2;
 650                                 m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2;
 651                                 if (bone->parent >= 0)
 652                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 653                                 else
 654                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 655                                 bone1++;
 656                                 bone2++;
 657                                 bone++;
 658                         }
 659                 }
 660         }
 661         else
 662         {
 663                 // 1 pose
 664                 if (lerp1 != 1)
 665                 {
 666                         // lerp != 1.0
 667                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 668                         {
 669                                 // interpolate matrices
 670                                 m.m[0][0] = bone1->m[0][0] * lerp1;
 671                                 m.m[0][1] = bone1->m[0][1] * lerp1;
 672                                 m.m[0][2] = bone1->m[0][2] * lerp1;
 673                                 m.m[0][3] = bone1->m[0][3] * lerp1;
 674                                 m.m[1][0] = bone1->m[1][0] * lerp1;
 675                                 m.m[1][1] = bone1->m[1][1] * lerp1;
 676                                 m.m[1][2] = bone1->m[1][2] * lerp1;
 677                                 m.m[1][3] = bone1->m[1][3] * lerp1;
 678                                 m.m[2][0] = bone1->m[2][0] * lerp1;
 679                                 m.m[2][1] = bone1->m[2][1] * lerp1;
 680                                 m.m[2][2] = bone1->m[2][2] * lerp1;
 681                                 m.m[2][3] = bone1->m[2][3] * lerp1;
 682                                 if (bone->parent >= 0)
 683                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 684                                 else
 685                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 686                                 bone1++;
 687                                 bone++;
 688                         }
 689                 }
 690                 else
 691                 {
 692                         // lerp == 1.0
 693                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 694                         {
 695                                 if (bone->parent >= 0)
 696                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &bone1->m[0][0], &out->m[0][0]);
 697                                 else
 698                                         R_ConcatTransforms(&rootmatrix.m[0][0], &bone1->m[0][0], &out->m[0][0]);
 699                                 bone1++;
 700                                 bone++;
 701                         }
 702                 }
 703         }
 704         return true;
 705 }
 706
 707 void ZymoticTransformVerts(int vertcount, int *bonecounts, zymvertex_t *vert)
 708 {
 709         int c;
 710         float *out = aliasvert;
 711         zymbonematrix *matrix;
 712         while(vertcount--)
 713         {
 714                 c = *bonecounts++;
 715                 // FIXME: validate bonecounts at load time (must be >= 1)
 716                 // FIXME: need 4th component in origin, for how much of the translate to blend in
 717                 if (c == 1)
 718                 {
 719                         matrix = &zymbonepose[vert->bonenum];
 720                         out[0] = vert->origin[0] * matrix->m[0][0] + vert->origin[1] * matrix->m[0][1] + vert->origin[2] * matrix->m[0][2] + matrix->m[0][3];
 721                         out[1] = vert->origin[0] * matrix->m[1][0] + vert->origin[1] * matrix->m[1][1] + vert->origin[2] * matrix->m[1][2] + matrix->m[1][3];
 722                         out[2] = vert->origin[0] * matrix->m[2][0] + vert->origin[1] * matrix->m[2][1] + vert->origin[2] * matrix->m[2][2] + matrix->m[2][3];
 723                         vert++;
 724                 }
 725                 else
 726                 {
 727                         VectorClear(out);
 728                         while(c--)
 729                         {
 730                                 matrix = &zymbonepose[vert->bonenum];
 731                                 out[0] += vert->origin[0] * matrix->m[0][0] + vert->origin[1] * matrix->m[0][1] + vert->origin[2] * matrix->m[0][2] + matrix->m[0][3];
 732                                 out[1] += vert->origin[0] * matrix->m[1][0] + vert->origin[1] * matrix->m[1][1] + vert->origin[2] * matrix->m[1][2] + matrix->m[1][3];
 733                                 out[2] += vert->origin[0] * matrix->m[2][0] + vert->origin[1] * matrix->m[2][1] + vert->origin[2] * matrix->m[2][2] + matrix->m[2][3];
 734                                 vert++;
 735                         }
 736                 }
 737                 out += 4;
 738         }
 739 }
 740
 741 void ZymoticCalcNormals(int vertcount, int shadercount, int *renderlist)
 742 {
 743         int a, b, c, d;
 744         float *out, v1[3], v2[3], normal[3], s;
 745         int *u;
 746         // clear normals
 747         memset(aliasvertnorm, 0, sizeof(float) * vertcount * 3);
 748         memset(aliasvertusage, 0, sizeof(int) * vertcount);
 749         // parse render list and accumulate surface normals
 750         while(shadercount--)
 751         {
 752                 d = *renderlist++;
 753                 while (d--)
 754                 {
 755                         a = renderlist[0]*4;
 756                         b = renderlist[1]*4;
 757                         c = renderlist[2]*4;
 758                         v1[0] = aliasvert[a+0] - aliasvert[b+0];
 759                         v1[1] = aliasvert[a+1] - aliasvert[b+1];
 760                         v1[2] = aliasvert[a+2] - aliasvert[b+2];
 761                         v2[0] = aliasvert[c+0] - aliasvert[b+0];
 762                         v2[1] = aliasvert[c+1] - aliasvert[b+1];
 763                         v2[2] = aliasvert[c+2] - aliasvert[b+2];
 764                         CrossProduct(v1, v2, normal);
 765                         VectorNormalizeFast(normal);
 766                         // add surface normal to vertices
 767                         a = renderlist[0] * 3;
 768                         aliasvertnorm[a+0] += normal[0];
 769                         aliasvertnorm[a+1] += normal[1];
 770                         aliasvertnorm[a+2] += normal[2];
 771                         aliasvertusage[renderlist[0]]++;
 772                         a = renderlist[1] * 3;
 773                         aliasvertnorm[a+0] += normal[0];
 774                         aliasvertnorm[a+1] += normal[1];
 775                         aliasvertnorm[a+2] += normal[2];
 776                         aliasvertusage[renderlist[1]]++;
 777                         a = renderlist[2] * 3;
 778                         aliasvertnorm[a+0] += normal[0];
 779                         aliasvertnorm[a+1] += normal[1];
 780                         aliasvertnorm[a+2] += normal[2];
 781                         aliasvertusage[renderlist[2]]++;
 782                         renderlist += 3;
 783                 }
 784         }
 785         // FIXME: precalc this
 786         // average surface normals
 787         out = aliasvertnorm;
 788         u = aliasvertusage;
 789         while(vertcount--)
 790         {
 791                 if (*u > 1)
 792                 {
 793                         s = ixtable[*u];
 794                         out[0] *= s;
 795                         out[1] *= s;
 796                         out[2] *= s;
 797                 }
 798                 u++;
 799                 out += 3;
 800         }
 801 }
 802
 803 void R_DrawZymoticModelMeshCallback (const void *calldata1, int calldata2)
 804 {
 805         float fog, colorscale;
 806         vec3_t diff;
 807         int i, *renderlist, *elements;
 808         zymtype1header_t *m;
 809         rtexture_t *texture;
 810         rmeshstate_t mstate;
 811         const entity_render_t *ent = calldata1;
 812         int shadernum = calldata2;
 813         int numverts, numtriangles;
 814
 815         R_Mesh_Matrix(&ent->matrix);
 816
 817         // find the vertex index list and texture
 818         m = ent->model->zymdata_header;
 819         renderlist = (int *)(m->lump_render.start + (int) m);
 820         for (i = 0;i < shadernum;i++)
 821                 renderlist += renderlist[0] * 3 + 1;
 822         texture = ((rtexture_t **)(m->lump_shaders.start + (int) m))[shadernum];
 823
 824         numverts = m->numverts;
 825         numtriangles = *renderlist++;
 826         elements = renderlist;
 827         R_Mesh_ResizeCheck(numverts);
 828
 829         fog = 0;
 830         if (fogenabled)
 831         {
 832                 VectorSubtract(ent->origin, r_origin, diff);
 833                 fog = DotProduct(diff,diff);
 834                 if (fog < 0.01f)
 835                         fog = 0.01f;
 836                 fog = exp(fogdensity/fog);
 837                 if (fog > 1)
 838                         fog = 1;
 839                 if (fog < 0.01f)
 840                         fog = 0;
 841                 // fog method: darken, additive fog
 842                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 843                 // 2. render fog as additive
 844         }
 845
 846         ZymoticLerpBones(m->numbones, (zymbonematrix *)(m->lump_poses.start + (int) m), ent->frameblend, (zymbone_t *)(m->lump_bones.start + (int) m));
 847         ZymoticTransformVerts(numverts, (int *)(m->lump_vertbonecounts.start + (int) m), (zymvertex_t *)(m->lump_verts.start + (int) m));
 848         ZymoticCalcNormals(numverts, m->numshaders, (int *)(m->lump_render.start + (int) m));
 849
 850         R_LightModel(ent, numverts, 1 - fog, 1 - fog, 1 - fog, false);
 851
 852         memset(&mstate, 0, sizeof(mstate));
 853         if (ent->effects & EF_ADDITIVE)
 854         {
 855                 mstate.blendfunc1 = GL_SRC_ALPHA;
 856                 mstate.blendfunc2 = GL_ONE;
 857         }
 858         else if (ent->alpha != 1.0 || R_TextureHasAlpha(texture))
 859         {
 860                 mstate.blendfunc1 = GL_SRC_ALPHA;
 861                 mstate.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 862         }
 863         else
 864         {
 865                 mstate.blendfunc1 = GL_ONE;
 866                 mstate.blendfunc2 = GL_ZERO;
 867         }
 868         colorscale = r_colorscale;
 869         if (gl_combine.integer)
 870         {
 871                 mstate.texrgbscale[0] = 4;
 872                 colorscale *= 0.25f;
 873         }
 874         mstate.tex[0] = R_GetTexture(texture);
 875         R_Mesh_State(&mstate);
 876
 877         c_alias_polys += numtriangles;
 878         memcpy(varray_vertex, aliasvert, numverts * sizeof(float[4]));
 879         R_ModulateColors(aliasvertcolor, varray_color, numverts, colorscale, colorscale, colorscale);
 880         memcpy(varray_texcoord[0], (float *)(m->lump_texcoords.start + (int) m), numverts * sizeof(float[2]));
 881         R_Mesh_Draw(numverts, numtriangles, elements);
 882
 883         if (fog)
 884         {
 885                 memset(&mstate, 0, sizeof(mstate));
 886                 mstate.blendfunc1 = GL_SRC_ALPHA;
 887                 mstate.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 888                 // FIXME: need alpha mask for fogging...
 889                 //mstate.tex[0] = R_GetTexture(texture);
 890                 R_Mesh_State(&mstate);
 891
 892                 c_alias_polys += numtriangles;
 893                 memcpy(varray_vertex, aliasvert, numverts * sizeof(float[4]));
 894                 R_FillColors(varray_color, numverts, fogcolor[0] * r_colorscale, fogcolor[1] * r_colorscale, fogcolor[2] * r_colorscale, ent->alpha * fog);
 895                 //memcpy(mesh_texcoord[0], (float *)(m->lump_texcoords.start + (int) m), numverts * sizeof(float[2]));
 896                 R_Mesh_Draw(numverts, numtriangles, elements);
 897         }
 898 }
 899
 900 void R_DrawZymoticModel (entity_render_t *ent)
 901 {
 902         int i;
 903         zymtype1header_t *m;
 904         rtexture_t *texture;
 905
 906         if (ent->alpha < (1.0f / 64.0f))
 907                 return; // basically completely transparent
 908
 909         c_models++;
 910
 911         m = ent->model->zymdata_header;
 912         for (i = 0;i < m->numshaders;i++)
 913         {
 914                 texture = ((rtexture_t **)(m->lump_shaders.start + (int) m))[i];
 915                 if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_TextureHasAlpha(texture))
 916                         R_MeshQueue_AddTransparent(ent->origin, R_DrawZymoticModelMeshCallback, ent, i);
 917                 else
 918                         R_DrawZymoticModelMeshCallback(ent, i);
 919         }
 920 }
 921
 922 void R_DrawQ1Q2AliasModel(entity_render_t *ent)
 923 {
 924         if (ent->alpha < (1.0f / 64.0f))
 925                 return; // basically completely transparent
 926
 927         c_models++;
 928
 929         if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_FetchSkinFrame(ent)->fog != NULL)
 930                 R_MeshQueue_AddTransparent(ent->origin, R_DrawQ1Q2AliasModelCallback, ent, 0);
 931         else
 932                 R_DrawQ1Q2AliasModelCallback(ent, 0);
 933 }