gl_models.c

   1
   2 #include "quakedef.h"
   3
   4 cvar_t r_quickmodels = {0, "r_quickmodels", "1"};
   5
   6 typedef struct
   7 {
   8         float m[3][4];
   9 } zymbonematrix;
  10
  11 // LordHavoc: vertex arrays
  12
  13 float *aliasvertbuf;
  14 float *aliasvertcolorbuf;
  15 float *aliasvert; // this may point at aliasvertbuf or at vertex arrays in the mesh backend
  16 float *aliasvertcolor; // this may point at aliasvertcolorbuf or at vertex arrays in the mesh backend
  17
  18 float *aliasvertcolor2;
  19 float *aliasvertnorm;
  20 int *aliasvertusage;
  21 zymbonematrix *zymbonepose;
  22
  23 mempool_t *gl_models_mempool;
  24
  25 void gl_models_start(void)
  26 {
  27         // allocate vertex processing arrays
  28         gl_models_mempool = Mem_AllocPool("GL_Models");
  29         aliasvert = aliasvertbuf = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4]));
  30         aliasvertcolor = aliasvertcolorbuf = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4]));
  31         aliasvertnorm = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][3]));
  32         aliasvertcolor2 = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4])); // used temporarily for tinted coloring
  33         zymbonepose = Mem_Alloc(gl_models_mempool, sizeof(zymbonematrix[256]));
  34         aliasvertusage = Mem_Alloc(gl_models_mempool, sizeof(int[MD2MAX_VERTS]));
  35 }
  36
  37 void gl_models_shutdown(void)
  38 {
  39         Mem_FreePool(&gl_models_mempool);
  40 }
  41
  42 void gl_models_newmap(void)
  43 {
  44 }
  45
  46 void GL_Models_Init(void)
  47 {
  48         Cvar_RegisterVariable(&r_quickmodels);
  49
  50         R_RegisterModule("GL_Models", gl_models_start, gl_models_shutdown, gl_models_newmap);
  51 }
  52
  53 /*
  54 void R_AliasTransformVerts(int vertcount)
  55 {
  56         vec3_t point;
  57         float *av;
  58         av = aliasvert;
  59         while (vertcount >= 4)
  60         {
  61                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  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                 vertcount -= 4;
  66         }
  67         while(vertcount > 0)
  68         {
  69                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  70                 vertcount--;
  71         }
  72 }
  73 */
  74
  75 void R_AliasLerpVerts(int vertcount,
  76                 float lerp1, const trivertx_t *verts1, const vec3_t fscale1, const vec3_t translate1,
  77                 float lerp2, const trivertx_t *verts2, const vec3_t fscale2, const vec3_t translate2,
  78                 float lerp3, const trivertx_t *verts3, const vec3_t fscale3, const vec3_t translate3,
  79                 float lerp4, const trivertx_t *verts4, const vec3_t fscale4, const vec3_t translate4)
  80 {
  81         int i;
  82         vec3_t scale1, scale2, scale3, scale4, translate;
  83         const float *n1, *n2, *n3, *n4;
  84         float *av, *avn;
  85         av = aliasvert;
  86         avn = aliasvertnorm;
  87         VectorScale(fscale1, lerp1, scale1);
  88         if (lerp2)
  89         {
  90                 VectorScale(fscale2, lerp2, scale2);
  91                 if (lerp3)
  92                 {
  93                         VectorScale(fscale3, lerp3, scale3);
  94                         if (lerp4)
  95                         {
  96                                 VectorScale(fscale4, lerp4, scale4);
  97                                 translate[0] = translate1[0] * lerp1 + translate2[0] * lerp2 + translate3[0] * lerp3 + translate4[0] * lerp4;
  98                                 translate[1] = translate1[1] * lerp1 + translate2[1] * lerp2 + translate3[1] * lerp3 + translate4[1] * lerp4;
  99                                 translate[2] = translate1[2] * lerp1 + translate2[2] * lerp2 + translate3[2] * lerp3 + translate4[2] * lerp4;
 100                                 // generate vertices
 101                                 for (i = 0;i < vertcount;i++)
 102                                 {
 103                                         av[0] = verts1->v[0] * scale1[0] + verts2->v[0] * scale2[0] + verts3->v[0] * scale3[0] + verts4->v[0] * scale4[0] + translate[0];
 104                                         av[1] = verts1->v[1] * scale1[1] + verts2->v[1] * scale2[1] + verts3->v[1] * scale3[1] + verts4->v[1] * scale4[1] + translate[1];
 105                                         av[2] = verts1->v[2] * scale1[2] + verts2->v[2] * scale2[2] + verts3->v[2] * scale3[2] + verts4->v[2] * scale4[2] + translate[2];
 106                                         n1 = m_bytenormals[verts1->lightnormalindex];
 107                                         n2 = m_bytenormals[verts2->lightnormalindex];
 108                                         n3 = m_bytenormals[verts3->lightnormalindex];
 109                                         n4 = m_bytenormals[verts4->lightnormalindex];
 110                                         avn[0] = n1[0] * lerp1 + n2[0] * lerp2 + n3[0] * lerp3 + n4[0] * lerp4;
 111                                         avn[1] = n1[1] * lerp1 + n2[1] * lerp2 + n3[1] * lerp3 + n4[1] * lerp4;
 112                                         avn[2] = n1[2] * lerp1 + n2[2] * lerp2 + n3[2] * lerp3 + n4[2] * lerp4;
 113                                         av += 4;
 114                                         avn += 3;
 115                                         verts1++;verts2++;verts3++;verts4++;
 116                                 }
 117                         }
 118                         else
 119                         {
 120                                 translate[0] = translate1[0] * lerp1 + translate2[0] * lerp2 + translate3[0] * lerp3;
 121                                 translate[1] = translate1[1] * lerp1 + translate2[1] * lerp2 + translate3[1] * lerp3;
 122                                 translate[2] = translate1[2] * lerp1 + translate2[2] * lerp2 + translate3[2] * lerp3;
 123                                 // generate vertices
 124                                 for (i = 0;i < vertcount;i++)
 125                                 {
 126                                         av[0] = verts1->v[0] * scale1[0] + verts2->v[0] * scale2[0] + verts3->v[0] * scale3[0] + translate[0];
 127                                         av[1] = verts1->v[1] * scale1[1] + verts2->v[1] * scale2[1] + verts3->v[1] * scale3[1] + translate[1];
 128                                         av[2] = verts1->v[2] * scale1[2] + verts2->v[2] * scale2[2] + verts3->v[2] * scale3[2] + translate[2];
 129                                         n1 = m_bytenormals[verts1->lightnormalindex];
 130                                         n2 = m_bytenormals[verts2->lightnormalindex];
 131                                         n3 = m_bytenormals[verts3->lightnormalindex];
 132                                         avn[0] = n1[0] * lerp1 + n2[0] * lerp2 + n3[0] * lerp3;
 133                                         avn[1] = n1[1] * lerp1 + n2[1] * lerp2 + n3[1] * lerp3;
 134                                         avn[2] = n1[2] * lerp1 + n2[2] * lerp2 + n3[2] * lerp3;
 135                                         av += 4;
 136                                         avn += 3;
 137                                         verts1++;verts2++;verts3++;
 138                                 }
 139                         }
 140                 }
 141                 else
 142                 {
 143                         translate[0] = translate1[0] * lerp1 + translate2[0] * lerp2;
 144                         translate[1] = translate1[1] * lerp1 + translate2[1] * lerp2;
 145                         translate[2] = translate1[2] * lerp1 + translate2[2] * lerp2;
 146                         // generate vertices
 147                         for (i = 0;i < vertcount;i++)
 148                         {
 149                                 av[0] = verts1->v[0] * scale1[0] + verts2->v[0] * scale2[0] + translate[0];
 150                                 av[1] = verts1->v[1] * scale1[1] + verts2->v[1] * scale2[1] + translate[1];
 151                                 av[2] = verts1->v[2] * scale1[2] + verts2->v[2] * scale2[2] + translate[2];
 152                                 n1 = m_bytenormals[verts1->lightnormalindex];
 153                                 n2 = m_bytenormals[verts2->lightnormalindex];
 154                                 avn[0] = n1[0] * lerp1 + n2[0] * lerp2;
 155                                 avn[1] = n1[1] * lerp1 + n2[1] * lerp2;
 156                                 avn[2] = n1[2] * lerp1 + n2[2] * lerp2;
 157                                 av += 4;
 158                                 avn += 3;
 159                                 verts1++;verts2++;
 160                         }
 161                 }
 162         }
 163         else
 164         {
 165                 translate[0] = translate1[0] * lerp1;
 166                 translate[1] = translate1[1] * lerp1;
 167                 translate[2] = translate1[2] * lerp1;
 168                 // generate vertices
 169                 if (lerp1 != 1)
 170                 {
 171                         // general but almost never used case
 172                         for (i = 0;i < vertcount;i++)
 173                         {
 174                                 av[0] = verts1->v[0] * scale1[0] + translate[0];
 175                                 av[1] = verts1->v[1] * scale1[1] + translate[1];
 176                                 av[2] = verts1->v[2] * scale1[2] + translate[2];
 177                                 n1 = m_bytenormals[verts1->lightnormalindex];
 178                                 avn[0] = n1[0] * lerp1;
 179                                 avn[1] = n1[1] * lerp1;
 180                                 avn[2] = n1[2] * lerp1;
 181                                 av += 4;
 182                                 avn += 3;
 183                                 verts1++;
 184                         }
 185                 }
 186                 else
 187                 {
 188                         // fast normal case
 189                         for (i = 0;i < vertcount;i++)
 190                         {
 191                                 av[0] = verts1->v[0] * scale1[0] + translate[0];
 192                                 av[1] = verts1->v[1] * scale1[1] + translate[1];
 193                                 av[2] = verts1->v[2] * scale1[2] + translate[2];
 194                                 VectorCopy(m_bytenormals[verts1->lightnormalindex], avn);
 195                                 av += 4;
 196                                 avn += 3;
 197                                 verts1++;
 198                         }
 199                 }
 200         }
 201 }
 202
 203 skinframe_t *R_FetchSkinFrame(const entity_render_t *ent)
 204 {
 205         model_t *model = ent->model;
 206         unsigned int s = (unsigned int) ent->skinnum;
 207         if (s >= model->numskins)
 208                 s = 0;
 209         if (model->skinscenes[s].framecount > 1)
 210                 return &model->skinframes[model->skinscenes[s].firstframe + (int) (cl.time * 10) % model->skinscenes[s].framecount];
 211         else
 212                 return &model->skinframes[model->skinscenes[s].firstframe];
 213 }
 214
 215 void R_SetupMDLMD2Frames(const entity_render_t *ent, float colorr, float colorg, float colorb)
 216 {
 217         const md2frame_t *frame1, *frame2, *frame3, *frame4;
 218         const trivertx_t *frame1verts, *frame2verts, *frame3verts, *frame4verts;
 219         const model_t *model = ent->model;
 220
 221         frame1 = &model->mdlmd2data_frames[ent->frameblend[0].frame];
 222         frame2 = &model->mdlmd2data_frames[ent->frameblend[1].frame];
 223         frame3 = &model->mdlmd2data_frames[ent->frameblend[2].frame];
 224         frame4 = &model->mdlmd2data_frames[ent->frameblend[3].frame];
 225         frame1verts = &model->mdlmd2data_pose[ent->frameblend[0].frame * model->numverts];
 226         frame2verts = &model->mdlmd2data_pose[ent->frameblend[1].frame * model->numverts];
 227         frame3verts = &model->mdlmd2data_pose[ent->frameblend[2].frame * model->numverts];
 228         frame4verts = &model->mdlmd2data_pose[ent->frameblend[3].frame * model->numverts];
 229         R_AliasLerpVerts(model->numverts,
 230                 ent->frameblend[0].lerp, frame1verts, frame1->scale, frame1->translate,
 231                 ent->frameblend[1].lerp, frame2verts, frame2->scale, frame2->translate,
 232                 ent->frameblend[2].lerp, frame3verts, frame3->scale, frame3->translate,
 233                 ent->frameblend[3].lerp, frame4verts, frame4->scale, frame4->translate);
 234
 235         R_LightModel(ent, model->numverts, colorr, colorg, colorb, false);
 236
 237         //R_AliasTransformVerts(model->numverts);
 238 }
 239
 240 void R_DrawQ1Q2AliasModelCallback (const void *calldata1, int calldata2)
 241 {
 242         int i, c, pantsfullbright, shirtfullbright, colormapped, tex;
 243         float pantscolor[3], shirtcolor[3];
 244         float fog, colorscale;
 245         vec3_t diff;
 246         qbyte *bcolor;
 247         rmeshstate_t m;
 248         model_t *model;
 249         skinframe_t *skinframe;
 250         const entity_render_t *ent = calldata1;
 251         int blendfunc1, blendfunc2;
 252
 253 //      softwaretransformforentity(ent);
 254         R_Mesh_Matrix(&ent->matrix);
 255
 256         fog = 0;
 257         if (fogenabled)
 258         {
 259                 VectorSubtract(ent->origin, r_origin, diff);
 260                 fog = DotProduct(diff,diff);
 261                 if (fog < 0.01f)
 262                         fog = 0.01f;
 263                 fog = exp(fogdensity/fog);
 264                 if (fog > 1)
 265                         fog = 1;
 266                 if (fog < 0.01f)
 267                         fog = 0;
 268                 // fog method: darken, additive fog
 269                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 270                 // 2. render fog as additive
 271         }
 272
 273         model = ent->model;
 274         R_Mesh_ResizeCheck(model->numverts);
 275
 276         skinframe = R_FetchSkinFrame(ent);
 277
 278         if (ent->effects & EF_ADDITIVE)
 279         {
 280                 blendfunc1 = GL_SRC_ALPHA;
 281                 blendfunc2 = GL_ONE;
 282         }
 283         else if (ent->alpha != 1.0 || skinframe->fog != NULL)
 284         {
 285                 blendfunc1 = GL_SRC_ALPHA;
 286                 blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 287         }
 288         else
 289         {
 290                 blendfunc1 = GL_ONE;
 291                 blendfunc2 = GL_ZERO;
 292         }
 293
 294         colorscale = r_colorscale;
 295         if (gl_combine.integer)
 296                 colorscale *= 0.25f;
 297
 298         if (!skinframe->base && !skinframe->pants && !skinframe->shirt && !skinframe->glow)
 299         {
 300                 // untextured
 301                 memset(&m, 0, sizeof(m));
 302                 m.blendfunc1 = blendfunc1;
 303                 m.blendfunc2 = blendfunc2;
 304                 if (gl_combine.integer)
 305                         m.texrgbscale[0] = 4;
 306                 m.tex[0] = R_GetTexture(r_notexture);
 307                 R_Mesh_State(&m);
 308
 309                 c_alias_polys += model->numtris;
 310                 for (i = 0;i < model->numverts * 2;i++)
 311                         varray_texcoord[0][i] = model->mdlmd2data_texcoords[i] * 8.0f;
 312                 aliasvert = varray_vertex;
 313                 aliasvertcolor = varray_color;
 314                 R_SetupMDLMD2Frames(ent, colorscale, colorscale, colorscale);
 315                 aliasvert = aliasvertbuf;
 316                 aliasvertcolor = aliasvertcolorbuf;
 317                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 318                 return;
 319         }
 320
 321
 322         colormapped = !skinframe->merged || (ent->colormap >= 0 && skinframe->base && (skinframe->pants || skinframe->shirt));
 323         if (!colormapped && !fog && !skinframe->glow && !skinframe->fog)
 324         {
 325                 // fastpath for the normal situation (one texture)
 326                 memset(&m, 0, sizeof(m));
 327                 m.blendfunc1 = blendfunc1;
 328                 m.blendfunc2 = blendfunc2;
 329                 if (gl_combine.integer)
 330                         m.texrgbscale[0] = 4;
 331                 m.tex[0] = R_GetTexture(skinframe->merged);
 332                 R_Mesh_State(&m);
 333
 334                 c_alias_polys += model->numtris;
 335                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 336                 aliasvert = varray_vertex;
 337                 aliasvertcolor = varray_color;
 338                 R_SetupMDLMD2Frames(ent, colorscale, colorscale, colorscale);
 339                 aliasvert = aliasvertbuf;
 340                 aliasvertcolor = aliasvertcolorbuf;
 341                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 342                 return;
 343         }
 344
 345         R_SetupMDLMD2Frames(ent, 1 - fog, 1 - fog, 1 - fog);
 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 int ZymoticLerpBones(int count, const zymbonematrix *bonebase, const frameblend_t *blend, const zymbone_t *bone)
 475 {
 476         int i;
 477         float lerp1, lerp2, lerp3, lerp4;
 478         zymbonematrix *out, rootmatrix, m;
 479         const zymbonematrix *bone1, *bone2, *bone3, *bone4;
 480
 481         /*
 482         // LordHavoc: combine transform from zym coordinate space to quake coordinate space with model to world transform matrix
 483         rootmatrix.m[0][0] = softwaretransform_matrix[0][1];
 484         rootmatrix.m[0][1] = -softwaretransform_matrix[0][0];
 485         rootmatrix.m[0][2] = softwaretransform_matrix[0][2];
 486         rootmatrix.m[0][3] = softwaretransform_matrix[0][3];
 487         rootmatrix.m[1][0] = softwaretransform_matrix[1][1];
 488         rootmatrix.m[1][1] = -softwaretransform_matrix[1][0];
 489         rootmatrix.m[1][2] = softwaretransform_matrix[1][2];
 490         rootmatrix.m[1][3] = softwaretransform_matrix[1][3];
 491         rootmatrix.m[2][0] = softwaretransform_matrix[2][1];
 492         rootmatrix.m[2][1] = -softwaretransform_matrix[2][0];
 493         rootmatrix.m[2][2] = softwaretransform_matrix[2][2];
 494         rootmatrix.m[2][3] = softwaretransform_matrix[2][3];
 495         */
 496         rootmatrix.m[0][0] = 1;
 497         rootmatrix.m[0][1] = 0;
 498         rootmatrix.m[0][2] = 0;
 499         rootmatrix.m[0][3] = 0;
 500         rootmatrix.m[1][0] = 0;
 501         rootmatrix.m[1][1] = 1;
 502         rootmatrix.m[1][2] = 0;
 503         rootmatrix.m[1][3] = 0;
 504         rootmatrix.m[2][0] = 0;
 505         rootmatrix.m[2][1] = 0;
 506         rootmatrix.m[2][2] = 1;
 507         rootmatrix.m[2][3] = 0;
 508
 509         bone1 = bonebase + blend[0].frame * count;
 510         lerp1 = blend[0].lerp;
 511         if (blend[1].lerp)
 512         {
 513                 bone2 = bonebase + blend[1].frame * count;
 514                 lerp2 = blend[1].lerp;
 515                 if (blend[2].lerp)
 516                 {
 517                         bone3 = bonebase + blend[2].frame * count;
 518                         lerp3 = blend[2].lerp;
 519                         if (blend[3].lerp)
 520                         {
 521                                 // 4 poses
 522                                 bone4 = bonebase + blend[3].frame * count;
 523                                 lerp4 = blend[3].lerp;
 524                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 525                                 {
 526                                         // interpolate matrices
 527                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3 + bone4->m[0][0] * lerp4;
 528                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3 + bone4->m[0][1] * lerp4;
 529                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3 + bone4->m[0][2] * lerp4;
 530                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3 + bone4->m[0][3] * lerp4;
 531                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3 + bone4->m[1][0] * lerp4;
 532                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3 + bone4->m[1][1] * lerp4;
 533                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3 + bone4->m[1][2] * lerp4;
 534                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3 + bone4->m[1][3] * lerp4;
 535                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3 + bone4->m[2][0] * lerp4;
 536                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3 + bone4->m[2][1] * lerp4;
 537                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3 + bone4->m[2][2] * lerp4;
 538                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3 + bone4->m[2][3] * lerp4;
 539                                         if (bone->parent >= 0)
 540                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 541                                         else
 542                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 543                                         bone1++;
 544                                         bone2++;
 545                                         bone3++;
 546                                         bone4++;
 547                                         bone++;
 548                                 }
 549                         }
 550                         else
 551                         {
 552                                 // 3 poses
 553                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 554                                 {
 555                                         // interpolate matrices
 556                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3;
 557                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3;
 558                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3;
 559                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3;
 560                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3;
 561                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3;
 562                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3;
 563                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3;
 564                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3;
 565                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3;
 566                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3;
 567                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3;
 568                                         if (bone->parent >= 0)
 569                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 570                                         else
 571                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 572                                         bone1++;
 573                                         bone2++;
 574                                         bone3++;
 575                                         bone++;
 576                                 }
 577                         }
 578                 }
 579                 else
 580                 {
 581                         // 2 poses
 582                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 583                         {
 584                                 // interpolate matrices
 585                                 m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2;
 586                                 m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2;
 587                                 m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2;
 588                                 m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2;
 589                                 m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2;
 590                                 m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2;
 591                                 m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2;
 592                                 m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2;
 593                                 m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2;
 594                                 m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2;
 595                                 m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2;
 596                                 m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2;
 597                                 if (bone->parent >= 0)
 598                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 599                                 else
 600                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 601                                 bone1++;
 602                                 bone2++;
 603                                 bone++;
 604                         }
 605                 }
 606         }
 607         else
 608         {
 609                 // 1 pose
 610                 if (lerp1 != 1)
 611                 {
 612                         // lerp != 1.0
 613                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 614                         {
 615                                 // interpolate matrices
 616                                 m.m[0][0] = bone1->m[0][0] * lerp1;
 617                                 m.m[0][1] = bone1->m[0][1] * lerp1;
 618                                 m.m[0][2] = bone1->m[0][2] * lerp1;
 619                                 m.m[0][3] = bone1->m[0][3] * lerp1;
 620                                 m.m[1][0] = bone1->m[1][0] * lerp1;
 621                                 m.m[1][1] = bone1->m[1][1] * lerp1;
 622                                 m.m[1][2] = bone1->m[1][2] * lerp1;
 623                                 m.m[1][3] = bone1->m[1][3] * lerp1;
 624                                 m.m[2][0] = bone1->m[2][0] * lerp1;
 625                                 m.m[2][1] = bone1->m[2][1] * lerp1;
 626                                 m.m[2][2] = bone1->m[2][2] * lerp1;
 627                                 m.m[2][3] = bone1->m[2][3] * lerp1;
 628                                 if (bone->parent >= 0)
 629                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 630                                 else
 631                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 632                                 bone1++;
 633                                 bone++;
 634                         }
 635                 }
 636                 else
 637                 {
 638                         // lerp == 1.0
 639                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 640                         {
 641                                 if (bone->parent >= 0)
 642                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &bone1->m[0][0], &out->m[0][0]);
 643                                 else
 644                                         R_ConcatTransforms(&rootmatrix.m[0][0], &bone1->m[0][0], &out->m[0][0]);
 645                                 bone1++;
 646                                 bone++;
 647                         }
 648                 }
 649         }
 650         return true;
 651 }
 652
 653 void ZymoticTransformVerts(int vertcount, int *bonecounts, zymvertex_t *vert)
 654 {
 655         int c;
 656         float *out = aliasvert;
 657         zymbonematrix *matrix;
 658         while(vertcount--)
 659         {
 660                 c = *bonecounts++;
 661                 // FIXME: validate bonecounts at load time (must be >= 1)
 662                 // FIXME: need 4th component in origin, for how much of the translate to blend in
 663                 if (c == 1)
 664                 {
 665                         matrix = &zymbonepose[vert->bonenum];
 666                         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];
 667                         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];
 668                         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];
 669                         vert++;
 670                 }
 671                 else
 672                 {
 673                         VectorClear(out);
 674                         while(c--)
 675                         {
 676                                 matrix = &zymbonepose[vert->bonenum];
 677                                 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];
 678                                 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];
 679                                 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];
 680                                 vert++;
 681                         }
 682                 }
 683                 out += 4;
 684         }
 685 }
 686
 687 void ZymoticCalcNormals(int vertcount, int shadercount, int *renderlist)
 688 {
 689         int a, b, c, d;
 690         float *out, v1[3], v2[3], normal[3], s;
 691         int *u;
 692         // clear normals
 693         memset(aliasvertnorm, 0, sizeof(float) * vertcount * 3);
 694         memset(aliasvertusage, 0, sizeof(int) * vertcount);
 695         // parse render list and accumulate surface normals
 696         while(shadercount--)
 697         {
 698                 d = *renderlist++;
 699                 while (d--)
 700                 {
 701                         a = renderlist[0]*4;
 702                         b = renderlist[1]*4;
 703                         c = renderlist[2]*4;
 704                         v1[0] = aliasvert[a+0] - aliasvert[b+0];
 705                         v1[1] = aliasvert[a+1] - aliasvert[b+1];
 706                         v1[2] = aliasvert[a+2] - aliasvert[b+2];
 707                         v2[0] = aliasvert[c+0] - aliasvert[b+0];
 708                         v2[1] = aliasvert[c+1] - aliasvert[b+1];
 709                         v2[2] = aliasvert[c+2] - aliasvert[b+2];
 710                         CrossProduct(v1, v2, normal);
 711                         VectorNormalizeFast(normal);
 712                         // add surface normal to vertices
 713                         a = renderlist[0] * 3;
 714                         aliasvertnorm[a+0] += normal[0];
 715                         aliasvertnorm[a+1] += normal[1];
 716                         aliasvertnorm[a+2] += normal[2];
 717                         aliasvertusage[renderlist[0]]++;
 718                         a = renderlist[1] * 3;
 719                         aliasvertnorm[a+0] += normal[0];
 720                         aliasvertnorm[a+1] += normal[1];
 721                         aliasvertnorm[a+2] += normal[2];
 722                         aliasvertusage[renderlist[1]]++;
 723                         a = renderlist[2] * 3;
 724                         aliasvertnorm[a+0] += normal[0];
 725                         aliasvertnorm[a+1] += normal[1];
 726                         aliasvertnorm[a+2] += normal[2];
 727                         aliasvertusage[renderlist[2]]++;
 728                         renderlist += 3;
 729                 }
 730         }
 731         // FIXME: precalc this
 732         // average surface normals
 733         out = aliasvertnorm;
 734         u = aliasvertusage;
 735         while(vertcount--)
 736         {
 737                 if (*u > 1)
 738                 {
 739                         s = ixtable[*u];
 740                         out[0] *= s;
 741                         out[1] *= s;
 742                         out[2] *= s;
 743                 }
 744                 u++;
 745                 out += 3;
 746         }
 747 }
 748
 749 void R_DrawZymoticModelMeshCallback (const void *calldata1, int calldata2)
 750 {
 751         float fog, colorscale;
 752         vec3_t diff;
 753         int i, *renderlist, *elements;
 754         zymtype1header_t *m;
 755         rtexture_t *texture;
 756         rmeshstate_t mstate;
 757         const entity_render_t *ent = calldata1;
 758         int shadernum = calldata2;
 759         int numverts, numtriangles;
 760
 761         R_Mesh_Matrix(&ent->matrix);
 762
 763         // find the vertex index list and texture
 764         m = ent->model->zymdata_header;
 765         renderlist = (int *)(m->lump_render.start + (int) m);
 766         for (i = 0;i < shadernum;i++)
 767                 renderlist += renderlist[0] * 3 + 1;
 768         texture = ((rtexture_t **)(m->lump_shaders.start + (int) m))[shadernum];
 769
 770         numverts = m->numverts;
 771         numtriangles = *renderlist++;
 772         elements = renderlist;
 773         R_Mesh_ResizeCheck(numverts);
 774
 775         fog = 0;
 776         if (fogenabled)
 777         {
 778                 VectorSubtract(ent->origin, r_origin, diff);
 779                 fog = DotProduct(diff,diff);
 780                 if (fog < 0.01f)
 781                         fog = 0.01f;
 782                 fog = exp(fogdensity/fog);
 783                 if (fog > 1)
 784                         fog = 1;
 785                 if (fog < 0.01f)
 786                         fog = 0;
 787                 // fog method: darken, additive fog
 788                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 789                 // 2. render fog as additive
 790         }
 791
 792         ZymoticLerpBones(m->numbones, (zymbonematrix *)(m->lump_poses.start + (int) m), ent->frameblend, (zymbone_t *)(m->lump_bones.start + (int) m));
 793         ZymoticTransformVerts(numverts, (int *)(m->lump_vertbonecounts.start + (int) m), (zymvertex_t *)(m->lump_verts.start + (int) m));
 794         ZymoticCalcNormals(numverts, m->numshaders, (int *)(m->lump_render.start + (int) m));
 795
 796         R_LightModel(ent, numverts, 1 - fog, 1 - fog, 1 - fog, false);
 797
 798         memset(&mstate, 0, sizeof(mstate));
 799         if (ent->effects & EF_ADDITIVE)
 800         {
 801                 mstate.blendfunc1 = GL_SRC_ALPHA;
 802                 mstate.blendfunc2 = GL_ONE;
 803         }
 804         else if (ent->alpha != 1.0 || R_TextureHasAlpha(texture))
 805         {
 806                 mstate.blendfunc1 = GL_SRC_ALPHA;
 807                 mstate.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 808         }
 809         else
 810         {
 811                 mstate.blendfunc1 = GL_ONE;
 812                 mstate.blendfunc2 = GL_ZERO;
 813         }
 814         colorscale = r_colorscale;
 815         if (gl_combine.integer)
 816         {
 817                 mstate.texrgbscale[0] = 4;
 818                 colorscale *= 0.25f;
 819         }
 820         mstate.tex[0] = R_GetTexture(texture);
 821         R_Mesh_State(&mstate);
 822
 823         c_alias_polys += numtriangles;
 824         memcpy(varray_vertex, aliasvert, numverts * sizeof(float[4]));
 825         R_ModulateColors(aliasvertcolor, varray_color, numverts, colorscale, colorscale, colorscale);
 826         memcpy(varray_texcoord[0], (float *)(m->lump_texcoords.start + (int) m), numverts * sizeof(float[2]));
 827         R_Mesh_Draw(numverts, numtriangles, elements);
 828
 829         if (fog)
 830         {
 831                 memset(&mstate, 0, sizeof(mstate));
 832                 mstate.blendfunc1 = GL_SRC_ALPHA;
 833                 mstate.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 834                 // FIXME: need alpha mask for fogging...
 835                 //mstate.tex[0] = R_GetTexture(texture);
 836                 R_Mesh_State(&mstate);
 837
 838                 c_alias_polys += numtriangles;
 839                 memcpy(varray_vertex, aliasvert, numverts * sizeof(float[4]));
 840                 R_FillColors(varray_color, numverts, fogcolor[0] * r_colorscale, fogcolor[1] * r_colorscale, fogcolor[2] * r_colorscale, ent->alpha * fog);
 841                 //memcpy(mesh_texcoord[0], (float *)(m->lump_texcoords.start + (int) m), numverts * sizeof(float[2]));
 842                 R_Mesh_Draw(numverts, numtriangles, elements);
 843         }
 844 }
 845
 846 void R_DrawZymoticModel (entity_render_t *ent)
 847 {
 848         int i;
 849         zymtype1header_t *m;
 850         rtexture_t *texture;
 851
 852         if (ent->alpha < (1.0f / 64.0f))
 853                 return; // basically completely transparent
 854
 855         c_models++;
 856
 857         m = ent->model->zymdata_header;
 858         for (i = 0;i < m->numshaders;i++)
 859         {
 860                 texture = ((rtexture_t **)(m->lump_shaders.start + (int) m))[i];
 861                 if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_TextureHasAlpha(texture))
 862                         R_MeshQueue_AddTransparent(ent->origin, R_DrawZymoticModelMeshCallback, ent, i);
 863                 else
 864                         R_DrawZymoticModelMeshCallback(ent, i);
 865         }
 866 }
 867
 868 void R_DrawQ1Q2AliasModel(entity_render_t *ent)
 869 {
 870         if (ent->alpha < (1.0f / 64.0f))
 871                 return; // basically completely transparent
 872
 873         c_models++;
 874
 875         if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_FetchSkinFrame(ent)->fog != NULL)
 876                 R_MeshQueue_AddTransparent(ent->origin, R_DrawQ1Q2AliasModelCallback, ent, 0);
 877         else
 878                 R_DrawQ1Q2AliasModelCallback(ent, 0);
 879 }
 880