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;
 243         float pantscolor[3], shirtcolor[3];
 244         float fog;
 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         if (!skinframe->base && !skinframe->pants && !skinframe->shirt && !skinframe->glow)
 295         {
 296                 // untextured
 297                 memset(&m, 0, sizeof(m));
 298                 m.blendfunc1 = blendfunc1;
 299                 m.blendfunc2 = blendfunc2;
 300                 m.wantoverbright = true;
 301                 m.tex[0] = R_GetTexture(r_notexture);
 302                 R_Mesh_State(&m);
 303
 304                 c_alias_polys += model->numtris;
 305                 for (i = 0;i < model->numverts * 2;i++)
 306                         varray_texcoord[0][i] = model->mdlmd2data_texcoords[i] * 8.0f;
 307                 aliasvert = varray_vertex;
 308                 aliasvertcolor = varray_color;
 309                 R_SetupMDLMD2Frames(ent, mesh_colorscale, mesh_colorscale, mesh_colorscale);
 310                 aliasvert = aliasvertbuf;
 311                 aliasvertcolor = aliasvertcolorbuf;
 312                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 313                 return;
 314         }
 315
 316
 317         colormapped = !skinframe->merged || (ent->colormap >= 0 && skinframe->base && (skinframe->pants || skinframe->shirt));
 318         if (!colormapped && !fog && !skinframe->glow && !skinframe->fog)
 319         {
 320                 // fastpath for the normal situation (one texture)
 321                 memset(&m, 0, sizeof(m));
 322                 m.blendfunc1 = blendfunc1;
 323                 m.blendfunc2 = blendfunc2;
 324                 m.wantoverbright = true;
 325                 m.tex[0] = R_GetTexture(skinframe->merged);
 326                 R_Mesh_State(&m);
 327
 328                 c_alias_polys += model->numtris;
 329                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 330                 aliasvert = varray_vertex;
 331                 aliasvertcolor = varray_color;
 332                 R_SetupMDLMD2Frames(ent, mesh_colorscale, mesh_colorscale, mesh_colorscale);
 333                 aliasvert = aliasvertbuf;
 334                 aliasvertcolor = aliasvertcolorbuf;
 335                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 336                 return;
 337         }
 338
 339         R_SetupMDLMD2Frames(ent, 1 - fog, 1 - fog, 1 - fog);
 340
 341         if (colormapped)
 342         {
 343                 // 128-224 are backwards ranges
 344                 c = (ent->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12;
 345                 bcolor = (qbyte *) (&d_8to24table[c]);
 346                 pantsfullbright = c >= 224;
 347                 VectorScale(bcolor, (1.0f / 255.0f), pantscolor);
 348                 c = (ent->colormap & 0xF0);c += (c >= 128 && c < 224) ? 4 : 12;
 349                 bcolor = (qbyte *) (&d_8to24table[c]);
 350                 shirtfullbright = c >= 224;
 351                 VectorScale(bcolor, (1.0f / 255.0f), shirtcolor);
 352         }
 353         else
 354         {
 355                 pantscolor[0] = pantscolor[1] = pantscolor[2] = shirtcolor[0] = shirtcolor[1] = shirtcolor[2] = 1;
 356                 pantsfullbright = shirtfullbright = false;
 357         }
 358
 359         memset(&m, 0, sizeof(m));
 360         m.blendfunc1 = blendfunc1;
 361         m.blendfunc2 = blendfunc2;
 362         m.wantoverbright = true;
 363         m.tex[0] = colormapped ? R_GetTexture(skinframe->base) : R_GetTexture(skinframe->merged);
 364         if (m.tex[0])
 365         {
 366                 R_Mesh_State(&m);
 367
 368                 blendfunc1 = GL_SRC_ALPHA;
 369                 blendfunc2 = GL_ONE;
 370                 c_alias_polys += model->numtris;
 371                 R_ModulateColors(aliasvertcolor, varray_color, model->numverts, mesh_colorscale, mesh_colorscale, mesh_colorscale);
 372                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 373                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 374                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 375         }
 376
 377         if (colormapped)
 378         {
 379                 if (skinframe->pants)
 380                 {
 381                         memset(&m, 0, sizeof(m));
 382                         m.blendfunc1 = blendfunc1;
 383                         m.blendfunc2 = blendfunc2;
 384                         m.wantoverbright = true;
 385                         m.tex[0] = R_GetTexture(skinframe->pants);
 386                         if (m.tex[0])
 387                         {
 388                                 R_Mesh_State(&m);
 389
 390                                 blendfunc1 = GL_SRC_ALPHA;
 391                                 blendfunc2 = GL_ONE;
 392                                 c_alias_polys += model->numtris;
 393                                 if (pantsfullbright)
 394                                         R_FillColors(varray_color, model->numverts, pantscolor[0] * mesh_colorscale, pantscolor[1] * mesh_colorscale, pantscolor[2] * mesh_colorscale, ent->alpha);
 395                                 else
 396                                         R_ModulateColors(aliasvertcolor, varray_color, model->numverts, pantscolor[0] * mesh_colorscale, pantscolor[1] * mesh_colorscale, pantscolor[2] * mesh_colorscale);
 397                                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 398                                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 399                                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 400                         }
 401                 }
 402                 if (skinframe->shirt)
 403                 {
 404                         memset(&m, 0, sizeof(m));
 405                         m.blendfunc1 = blendfunc1;
 406                         m.blendfunc2 = blendfunc2;
 407                         m.wantoverbright = true;
 408                         m.tex[0] = R_GetTexture(skinframe->shirt);
 409                         if (m.tex[0])
 410                         {
 411                                 R_Mesh_State(&m);
 412
 413                                 blendfunc1 = GL_SRC_ALPHA;
 414                                 blendfunc2 = GL_ONE;
 415                                 c_alias_polys += model->numtris;
 416                                 if (shirtfullbright)
 417                                         R_FillColors(varray_color, model->numverts, shirtcolor[0] * mesh_colorscale, shirtcolor[1] * mesh_colorscale, shirtcolor[2] * mesh_colorscale, ent->alpha);
 418                                 else
 419                                         R_ModulateColors(aliasvertcolor, varray_color, model->numverts, shirtcolor[0] * mesh_colorscale, shirtcolor[1] * mesh_colorscale, shirtcolor[2] * mesh_colorscale);
 420                                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 421                                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 422                                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 423                         }
 424                 }
 425         }
 426         if (skinframe->glow)
 427         {
 428                 memset(&m, 0, sizeof(m));
 429                 m.blendfunc1 = blendfunc1;
 430                 m.blendfunc2 = blendfunc2;
 431                 m.wantoverbright = true;
 432                 m.tex[0] = R_GetTexture(skinframe->glow);
 433                 if (m.tex[0])
 434                 {
 435                         R_Mesh_State(&m);
 436
 437                         blendfunc1 = GL_SRC_ALPHA;
 438                         blendfunc2 = GL_ONE;
 439                         c_alias_polys += model->numtris;
 440                         R_FillColors(varray_color, model->numverts, (1 - fog) * mesh_colorscale, (1 - fog) * mesh_colorscale, (1 - fog) * mesh_colorscale, ent->alpha);
 441                         memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 442                         memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 443                         R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 444                 }
 445         }
 446         if (fog)
 447         {
 448                 memset(&m, 0, sizeof(m));
 449                 m.blendfunc1 = GL_SRC_ALPHA;
 450                 m.blendfunc2 = GL_ONE;
 451                 m.wantoverbright = false;
 452                 m.tex[0] = R_GetTexture(skinframe->fog);
 453                 R_Mesh_State(&m);
 454
 455                 c_alias_polys += model->numtris;
 456                 R_FillColors(varray_color, model->numverts, fogcolor[0] * fog * mesh_colorscale, fogcolor[1] * fog * mesh_colorscale, fogcolor[2] * fog * mesh_colorscale, ent->alpha);
 457                 memcpy(varray_vertex, aliasvert, model->numverts * sizeof(float[4]));
 458                 memcpy(varray_texcoord[0], model->mdlmd2data_texcoords, model->numverts * sizeof(float[2]));
 459                 R_Mesh_Draw(model->numverts, model->numtris, model->mdlmd2data_indices);
 460         }
 461 }
 462
 463 int ZymoticLerpBones(int count, const zymbonematrix *bonebase, const frameblend_t *blend, const zymbone_t *bone)
 464 {
 465         int i;
 466         float lerp1, lerp2, lerp3, lerp4;
 467         zymbonematrix *out, rootmatrix, m;
 468         const zymbonematrix *bone1, *bone2, *bone3, *bone4;
 469
 470         /*
 471         // LordHavoc: combine transform from zym coordinate space to quake coordinate space with model to world transform matrix
 472         rootmatrix.m[0][0] = softwaretransform_matrix[0][1];
 473         rootmatrix.m[0][1] = -softwaretransform_matrix[0][0];
 474         rootmatrix.m[0][2] = softwaretransform_matrix[0][2];
 475         rootmatrix.m[0][3] = softwaretransform_matrix[0][3];
 476         rootmatrix.m[1][0] = softwaretransform_matrix[1][1];
 477         rootmatrix.m[1][1] = -softwaretransform_matrix[1][0];
 478         rootmatrix.m[1][2] = softwaretransform_matrix[1][2];
 479         rootmatrix.m[1][3] = softwaretransform_matrix[1][3];
 480         rootmatrix.m[2][0] = softwaretransform_matrix[2][1];
 481         rootmatrix.m[2][1] = -softwaretransform_matrix[2][0];
 482         rootmatrix.m[2][2] = softwaretransform_matrix[2][2];
 483         rootmatrix.m[2][3] = softwaretransform_matrix[2][3];
 484         */
 485         rootmatrix.m[0][0] = 1;
 486         rootmatrix.m[0][1] = 0;
 487         rootmatrix.m[0][2] = 0;
 488         rootmatrix.m[0][3] = 0;
 489         rootmatrix.m[1][0] = 0;
 490         rootmatrix.m[1][1] = 1;
 491         rootmatrix.m[1][2] = 0;
 492         rootmatrix.m[1][3] = 0;
 493         rootmatrix.m[2][0] = 0;
 494         rootmatrix.m[2][1] = 0;
 495         rootmatrix.m[2][2] = 1;
 496         rootmatrix.m[2][3] = 0;
 497
 498         bone1 = bonebase + blend[0].frame * count;
 499         lerp1 = blend[0].lerp;
 500         if (blend[1].lerp)
 501         {
 502                 bone2 = bonebase + blend[1].frame * count;
 503                 lerp2 = blend[1].lerp;
 504                 if (blend[2].lerp)
 505                 {
 506                         bone3 = bonebase + blend[2].frame * count;
 507                         lerp3 = blend[2].lerp;
 508                         if (blend[3].lerp)
 509                         {
 510                                 // 4 poses
 511                                 bone4 = bonebase + blend[3].frame * count;
 512                                 lerp4 = blend[3].lerp;
 513                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 514                                 {
 515                                         // interpolate matrices
 516                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3 + bone4->m[0][0] * lerp4;
 517                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3 + bone4->m[0][1] * lerp4;
 518                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3 + bone4->m[0][2] * lerp4;
 519                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3 + bone4->m[0][3] * lerp4;
 520                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3 + bone4->m[1][0] * lerp4;
 521                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3 + bone4->m[1][1] * lerp4;
 522                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3 + bone4->m[1][2] * lerp4;
 523                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3 + bone4->m[1][3] * lerp4;
 524                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3 + bone4->m[2][0] * lerp4;
 525                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3 + bone4->m[2][1] * lerp4;
 526                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3 + bone4->m[2][2] * lerp4;
 527                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3 + bone4->m[2][3] * lerp4;
 528                                         if (bone->parent >= 0)
 529                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 530                                         else
 531                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 532                                         bone1++;
 533                                         bone2++;
 534                                         bone3++;
 535                                         bone4++;
 536                                         bone++;
 537                                 }
 538                         }
 539                         else
 540                         {
 541                                 // 3 poses
 542                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 543                                 {
 544                                         // interpolate matrices
 545                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3;
 546                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3;
 547                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3;
 548                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3;
 549                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3;
 550                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3;
 551                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3;
 552                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3;
 553                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3;
 554                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3;
 555                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3;
 556                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3;
 557                                         if (bone->parent >= 0)
 558                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 559                                         else
 560                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 561                                         bone1++;
 562                                         bone2++;
 563                                         bone3++;
 564                                         bone++;
 565                                 }
 566                         }
 567                 }
 568                 else
 569                 {
 570                         // 2 poses
 571                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 572                         {
 573                                 // interpolate matrices
 574                                 m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2;
 575                                 m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2;
 576                                 m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2;
 577                                 m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2;
 578                                 m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2;
 579                                 m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2;
 580                                 m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2;
 581                                 m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2;
 582                                 m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2;
 583                                 m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2;
 584                                 m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2;
 585                                 m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2;
 586                                 if (bone->parent >= 0)
 587                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 588                                 else
 589                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 590                                 bone1++;
 591                                 bone2++;
 592                                 bone++;
 593                         }
 594                 }
 595         }
 596         else
 597         {
 598                 // 1 pose
 599                 if (lerp1 != 1)
 600                 {
 601                         // lerp != 1.0
 602                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 603                         {
 604                                 // interpolate matrices
 605                                 m.m[0][0] = bone1->m[0][0] * lerp1;
 606                                 m.m[0][1] = bone1->m[0][1] * lerp1;
 607                                 m.m[0][2] = bone1->m[0][2] * lerp1;
 608                                 m.m[0][3] = bone1->m[0][3] * lerp1;
 609                                 m.m[1][0] = bone1->m[1][0] * lerp1;
 610                                 m.m[1][1] = bone1->m[1][1] * lerp1;
 611                                 m.m[1][2] = bone1->m[1][2] * lerp1;
 612                                 m.m[1][3] = bone1->m[1][3] * lerp1;
 613                                 m.m[2][0] = bone1->m[2][0] * lerp1;
 614                                 m.m[2][1] = bone1->m[2][1] * lerp1;
 615                                 m.m[2][2] = bone1->m[2][2] * lerp1;
 616                                 m.m[2][3] = bone1->m[2][3] * lerp1;
 617                                 if (bone->parent >= 0)
 618                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 619                                 else
 620                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 621                                 bone1++;
 622                                 bone++;
 623                         }
 624                 }
 625                 else
 626                 {
 627                         // lerp == 1.0
 628                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 629                         {
 630                                 if (bone->parent >= 0)
 631                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &bone1->m[0][0], &out->m[0][0]);
 632                                 else
 633                                         R_ConcatTransforms(&rootmatrix.m[0][0], &bone1->m[0][0], &out->m[0][0]);
 634                                 bone1++;
 635                                 bone++;
 636                         }
 637                 }
 638         }
 639         return true;
 640 }
 641
 642 void ZymoticTransformVerts(int vertcount, int *bonecounts, zymvertex_t *vert)
 643 {
 644         int c;
 645         float *out = aliasvert;
 646         zymbonematrix *matrix;
 647         while(vertcount--)
 648         {
 649                 c = *bonecounts++;
 650                 // FIXME: validate bonecounts at load time (must be >= 1)
 651                 // FIXME: need 4th component in origin, for how much of the translate to blend in
 652                 if (c == 1)
 653                 {
 654                         matrix = &zymbonepose[vert->bonenum];
 655                         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];
 656                         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];
 657                         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];
 658                         vert++;
 659                 }
 660                 else
 661                 {
 662                         VectorClear(out);
 663                         while(c--)
 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                 }
 672                 out += 4;
 673         }
 674 }
 675
 676 void ZymoticCalcNormals(int vertcount, int shadercount, int *renderlist)
 677 {
 678         int a, b, c, d;
 679         float *out, v1[3], v2[3], normal[3], s;
 680         int *u;
 681         // clear normals
 682         memset(aliasvertnorm, 0, sizeof(float) * vertcount * 3);
 683         memset(aliasvertusage, 0, sizeof(int) * vertcount);
 684         // parse render list and accumulate surface normals
 685         while(shadercount--)
 686         {
 687                 d = *renderlist++;
 688                 while (d--)
 689                 {
 690                         a = renderlist[0]*4;
 691                         b = renderlist[1]*4;
 692                         c = renderlist[2]*4;
 693                         v1[0] = aliasvert[a+0] - aliasvert[b+0];
 694                         v1[1] = aliasvert[a+1] - aliasvert[b+1];
 695                         v1[2] = aliasvert[a+2] - aliasvert[b+2];
 696                         v2[0] = aliasvert[c+0] - aliasvert[b+0];
 697                         v2[1] = aliasvert[c+1] - aliasvert[b+1];
 698                         v2[2] = aliasvert[c+2] - aliasvert[b+2];
 699                         CrossProduct(v1, v2, normal);
 700                         VectorNormalizeFast(normal);
 701                         // add surface normal to vertices
 702                         a = renderlist[0] * 3;
 703                         aliasvertnorm[a+0] += normal[0];
 704                         aliasvertnorm[a+1] += normal[1];
 705                         aliasvertnorm[a+2] += normal[2];
 706                         aliasvertusage[renderlist[0]]++;
 707                         a = renderlist[1] * 3;
 708                         aliasvertnorm[a+0] += normal[0];
 709                         aliasvertnorm[a+1] += normal[1];
 710                         aliasvertnorm[a+2] += normal[2];
 711                         aliasvertusage[renderlist[1]]++;
 712                         a = renderlist[2] * 3;
 713                         aliasvertnorm[a+0] += normal[0];
 714                         aliasvertnorm[a+1] += normal[1];
 715                         aliasvertnorm[a+2] += normal[2];
 716                         aliasvertusage[renderlist[2]]++;
 717                         renderlist += 3;
 718                 }
 719         }
 720         // FIXME: precalc this
 721         // average surface normals
 722         out = aliasvertnorm;
 723         u = aliasvertusage;
 724         while(vertcount--)
 725         {
 726                 if (*u > 1)
 727                 {
 728                         s = ixtable[*u];
 729                         out[0] *= s;
 730                         out[1] *= s;
 731                         out[2] *= s;
 732                 }
 733                 u++;
 734                 out += 3;
 735         }
 736 }
 737
 738 void R_DrawZymoticModelMeshCallback (const void *calldata1, int calldata2)
 739 {
 740         float fog;
 741         vec3_t diff;
 742         int i, *renderlist, *elements;
 743         zymtype1header_t *m;
 744         rtexture_t *texture;
 745         rmeshstate_t mstate;
 746         const entity_render_t *ent = calldata1;
 747         int shadernum = calldata2;
 748         int numverts, numtriangles;
 749
 750         R_Mesh_Matrix(&ent->matrix);
 751
 752         // find the vertex index list and texture
 753         m = ent->model->zymdata_header;
 754         renderlist = (int *)(m->lump_render.start + (int) m);
 755         for (i = 0;i < shadernum;i++)
 756                 renderlist += renderlist[0] * 3 + 1;
 757         texture = ((rtexture_t **)(m->lump_shaders.start + (int) m))[shadernum];
 758
 759         numverts = m->numverts;
 760         numtriangles = *renderlist++;
 761         elements = renderlist;
 762         R_Mesh_ResizeCheck(numverts);
 763
 764         fog = 0;
 765         if (fogenabled)
 766         {
 767                 VectorSubtract(ent->origin, r_origin, diff);
 768                 fog = DotProduct(diff,diff);
 769                 if (fog < 0.01f)
 770                         fog = 0.01f;
 771                 fog = exp(fogdensity/fog);
 772                 if (fog > 1)
 773                         fog = 1;
 774                 if (fog < 0.01f)
 775                         fog = 0;
 776                 // fog method: darken, additive fog
 777                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 778                 // 2. render fog as additive
 779         }
 780
 781         ZymoticLerpBones(m->numbones, (zymbonematrix *)(m->lump_poses.start + (int) m), ent->frameblend, (zymbone_t *)(m->lump_bones.start + (int) m));
 782         ZymoticTransformVerts(numverts, (int *)(m->lump_vertbonecounts.start + (int) m), (zymvertex_t *)(m->lump_verts.start + (int) m));
 783         ZymoticCalcNormals(numverts, m->numshaders, (int *)(m->lump_render.start + (int) m));
 784
 785         R_LightModel(ent, numverts, 1 - fog, 1 - fog, 1 - fog, false);
 786
 787         memset(&mstate, 0, sizeof(mstate));
 788         mstate.wantoverbright = true;
 789         if (ent->effects & EF_ADDITIVE)
 790         {
 791                 mstate.blendfunc1 = GL_SRC_ALPHA;
 792                 mstate.blendfunc2 = GL_ONE;
 793         }
 794         else if (ent->alpha != 1.0 || R_TextureHasAlpha(texture))
 795         {
 796                 mstate.blendfunc1 = GL_SRC_ALPHA;
 797                 mstate.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 798         }
 799         else
 800         {
 801                 mstate.blendfunc1 = GL_ONE;
 802                 mstate.blendfunc2 = GL_ZERO;
 803         }
 804         mstate.tex[0] = R_GetTexture(texture);
 805         R_Mesh_State(&mstate);
 806
 807         c_alias_polys += numtriangles;
 808         memcpy(varray_vertex, aliasvert, numverts * sizeof(float[4]));
 809         R_ModulateColors(aliasvertcolor, varray_color, numverts, mesh_colorscale, mesh_colorscale, mesh_colorscale);
 810         memcpy(varray_texcoord[0], (float *)(m->lump_texcoords.start + (int) m), numverts * sizeof(float[2]));
 811         R_Mesh_Draw(numverts, numtriangles, elements);
 812
 813         if (fog)
 814         {
 815                 memset(&mstate, 0, sizeof(mstate));
 816                 mstate.wantoverbright = false;
 817                 mstate.blendfunc1 = GL_SRC_ALPHA;
 818                 mstate.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 819                 // FIXME: need alpha mask for fogging...
 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_FillColors(varray_color, numverts, fogcolor[0] * mesh_colorscale, fogcolor[1] * mesh_colorscale, fogcolor[2] * mesh_colorscale, ent->alpha * fog);
 826                 //memcpy(mesh_texcoord[0], (float *)(m->lump_texcoords.start + (int) m), numverts * sizeof(float[2]));
 827                 R_Mesh_Draw(numverts, numtriangles, elements);
 828         }
 829 }
 830
 831 void R_DrawZymoticModel (entity_render_t *ent)
 832 {
 833         int i;
 834         zymtype1header_t *m;
 835         rtexture_t *texture;
 836
 837         if (ent->alpha < (1.0f / 64.0f))
 838                 return; // basically completely transparent
 839
 840         c_models++;
 841
 842         m = ent->model->zymdata_header;
 843         for (i = 0;i < m->numshaders;i++)
 844         {
 845                 texture = ((rtexture_t **)(m->lump_shaders.start + (int) m))[i];
 846                 if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_TextureHasAlpha(texture))
 847                         R_MeshQueue_AddTransparent(ent->origin, R_DrawZymoticModelMeshCallback, ent, i);
 848                 else
 849                         R_DrawZymoticModelMeshCallback(ent, i);
 850         }
 851 }
 852
 853 void R_DrawQ1Q2AliasModel(entity_render_t *ent)
 854 {
 855         if (ent->alpha < (1.0f / 64.0f))
 856                 return; // basically completely transparent
 857
 858         c_models++;
 859
 860         if (ent->effects & EF_ADDITIVE || ent->alpha != 1.0 || R_FetchSkinFrame(ent)->fog != NULL)
 861                 R_MeshQueue_AddTransparent(ent->origin, R_DrawQ1Q2AliasModelCallback, ent, 0);
 862         else
 863                 R_DrawQ1Q2AliasModelCallback(ent, 0);
 864 }
 865