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 rmeshinfo_t aliasmeshinfo;
  24
  25 mempool_t *gl_models_mempool;
  26
  27 void gl_models_start(void)
  28 {
  29         // allocate vertex processing arrays
  30         gl_models_mempool = Mem_AllocPool("GL_Models");
  31         aliasvert = aliasvertbuf = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4]));
  32         aliasvertcolor = aliasvertcolorbuf = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4]));
  33         aliasvertnorm = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][3]));
  34         aliasvertcolor2 = Mem_Alloc(gl_models_mempool, sizeof(float[MD2MAX_VERTS][4])); // used temporarily for tinted coloring
  35         zymbonepose = Mem_Alloc(gl_models_mempool, sizeof(zymbonematrix[256]));
  36         aliasvertusage = Mem_Alloc(gl_models_mempool, sizeof(int[MD2MAX_VERTS]));
  37 }
  38
  39 void gl_models_shutdown(void)
  40 {
  41         Mem_FreePool(&gl_models_mempool);
  42 }
  43
  44 void gl_models_newmap(void)
  45 {
  46 }
  47
  48 void GL_Models_Init(void)
  49 {
  50         Cvar_RegisterVariable(&r_quickmodels);
  51
  52         R_RegisterModule("GL_Models", gl_models_start, gl_models_shutdown, gl_models_newmap);
  53 }
  54
  55 void R_AliasTransformVerts(int vertcount)
  56 {
  57         vec3_t point;
  58         float *av;
  59         av = aliasvert;
  60         while (vertcount >= 4)
  61         {
  62                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  63                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  64                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  65                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  66                 vertcount -= 4;
  67         }
  68         while(vertcount > 0)
  69         {
  70                 VectorCopy(av, point);softwaretransform(point, av);av += 4;
  71                 vertcount--;
  72         }
  73 }
  74
  75 void R_AliasLerpVerts(int vertcount,
  76                 float lerp1, trivertx_t *verts1, vec3_t fscale1, vec3_t translate1,
  77                 float lerp2, trivertx_t *verts2, vec3_t fscale2, vec3_t translate2,
  78                 float lerp3, trivertx_t *verts3, vec3_t fscale3, vec3_t translate3,
  79                 float lerp4, trivertx_t *verts4, vec3_t fscale4, vec3_t translate4)
  80 {
  81         int i;
  82         vec3_t scale1, scale2, scale3, scale4, translate;
  83         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 void R_DrawModelMesh(rtexture_t *skin, float *colors, float cred, float cgreen, float cblue)
 204 {
 205         aliasmeshinfo.tex[0] = R_GetTexture(skin);
 206         aliasmeshinfo.color = colors;
 207         if (colors == NULL)
 208         {
 209                 aliasmeshinfo.cr = cred;
 210                 aliasmeshinfo.cg = cgreen;
 211                 aliasmeshinfo.cb = cblue;
 212                 aliasmeshinfo.ca = currentrenderentity->alpha;
 213         }
 214
 215         c_alias_polys += aliasmeshinfo.numtriangles;
 216         R_Mesh_Draw(&aliasmeshinfo);
 217
 218         // leave it in a state for additional passes
 219         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 220         aliasmeshinfo.blendfunc2 = GL_ONE;
 221 }
 222
 223 void R_TintModel(float *in, float *out, int verts, float r, float g, float b)
 224 {
 225         int i;
 226         for (i = 0;i < verts;i++)
 227         {
 228                 out[0] = in[0] * r;
 229                 out[1] = in[1] * g;
 230                 out[2] = in[2] * b;
 231                 out[3] = in[3];
 232                 in += 4;
 233                 out += 4;
 234         }
 235 }
 236
 237 skinframe_t *R_FetchSkinFrame(void)
 238 {
 239         model_t *model = currentrenderentity->model;
 240         if (model->skinscenes[currentrenderentity->skinnum].framecount > 1)
 241                 return &model->skinframes[model->skinscenes[currentrenderentity->skinnum].firstframe + (int) (cl.time * 10) % model->skinscenes[currentrenderentity->skinnum].framecount];
 242         else
 243                 return &model->skinframes[model->skinscenes[currentrenderentity->skinnum].firstframe];
 244 }
 245
 246 void R_SetupMDLMD2Frames(float colorr, float colorg, float colorb)
 247 {
 248         md2frame_t *frame1, *frame2, *frame3, *frame4;
 249         trivertx_t *frame1verts, *frame2verts, *frame3verts, *frame4verts;
 250         model_t *model;
 251         model = currentrenderentity->model;
 252
 253         frame1 = &model->mdlmd2data_frames[currentrenderentity->frameblend[0].frame];
 254         frame2 = &model->mdlmd2data_frames[currentrenderentity->frameblend[1].frame];
 255         frame3 = &model->mdlmd2data_frames[currentrenderentity->frameblend[2].frame];
 256         frame4 = &model->mdlmd2data_frames[currentrenderentity->frameblend[3].frame];
 257         frame1verts = &model->mdlmd2data_pose[currentrenderentity->frameblend[0].frame * model->numverts];
 258         frame2verts = &model->mdlmd2data_pose[currentrenderentity->frameblend[1].frame * model->numverts];
 259         frame3verts = &model->mdlmd2data_pose[currentrenderentity->frameblend[2].frame * model->numverts];
 260         frame4verts = &model->mdlmd2data_pose[currentrenderentity->frameblend[3].frame * model->numverts];
 261         R_AliasLerpVerts(model->numverts,
 262                 currentrenderentity->frameblend[0].lerp, frame1verts, frame1->scale, frame1->translate,
 263                 currentrenderentity->frameblend[1].lerp, frame2verts, frame2->scale, frame2->translate,
 264                 currentrenderentity->frameblend[2].lerp, frame3verts, frame3->scale, frame3->translate,
 265                 currentrenderentity->frameblend[3].lerp, frame4verts, frame4->scale, frame4->translate);
 266
 267         R_LightModel(model->numverts, colorr, colorg, colorb, false);
 268
 269         R_AliasTransformVerts(model->numverts);
 270 }
 271
 272 void R_DrawQ1Q2AliasModel (float fog)
 273 {
 274         model_t *model;
 275         skinframe_t *skinframe;
 276
 277         model = currentrenderentity->model;
 278
 279         skinframe = R_FetchSkinFrame();
 280         if (fog && !(currentrenderentity->effects & EF_ADDITIVE))
 281         {
 282                 R_SetupMDLMD2Frames(1 - fog, 1 - fog, 1 - fog);
 283
 284                 memset(&aliasmeshinfo, 0, sizeof(aliasmeshinfo));
 285
 286                 aliasmeshinfo.vertex = aliasvert;
 287                 aliasmeshinfo.vertexstep = sizeof(float[4]);
 288                 aliasmeshinfo.numverts = model->numverts;
 289                 aliasmeshinfo.numtriangles = model->numtris;
 290                 aliasmeshinfo.index = model->mdlmd2data_indices;
 291                 aliasmeshinfo.colorstep = sizeof(float[4]);
 292                 aliasmeshinfo.texcoords[0] = model->mdlmd2data_texcoords;
 293                 aliasmeshinfo.texcoordstep[0] = sizeof(float[2]);
 294
 295                 if (currentrenderentity->effects & EF_ADDITIVE)
 296                 {
 297                         aliasmeshinfo.transparent = true;
 298                         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 299                         aliasmeshinfo.blendfunc2 = GL_ONE;
 300                 }
 301                 else if (currentrenderentity->alpha != 1.0 || skinframe->fog != NULL)
 302                 {
 303                         aliasmeshinfo.transparent = true;
 304                         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 305                         aliasmeshinfo.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 306                 }
 307                 else
 308                 {
 309                         aliasmeshinfo.transparent = false;
 310                         aliasmeshinfo.blendfunc1 = GL_ONE;
 311                         aliasmeshinfo.blendfunc2 = GL_ZERO;
 312                 }
 313
 314                 if (skinframe->base || skinframe->pants || skinframe->shirt || skinframe->glow || skinframe->merged)
 315                 {
 316                         if (currentrenderentity->colormap >= 0 && (skinframe->base || skinframe->pants || skinframe->shirt))
 317                         {
 318                                 int c;
 319                                 qbyte *color;
 320                                 if (skinframe->base)
 321                                         R_DrawModelMesh(skinframe->base, aliasvertcolor, 0, 0, 0);
 322                                 if (skinframe->pants)
 323                                 {
 324                                         c = (currentrenderentity->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12; // 128-224 are backwards ranges
 325                                         color = (qbyte *) (&d_8to24table[c]);
 326                                         if (c >= 224) // fullbright ranges
 327                                                 R_DrawModelMesh(skinframe->pants, NULL, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 328                                         else
 329                                         {
 330                                                 R_TintModel(aliasvertcolor, aliasvertcolor2, model->numverts, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 331                                                 R_DrawModelMesh(skinframe->pants, aliasvertcolor2, 0, 0, 0);
 332                                         }
 333                                 }
 334                                 if (skinframe->shirt)
 335                                 {
 336                                         c = currentrenderentity->colormap & 0xF0      ;c += (c >= 128 && c < 224) ? 4 : 12; // 128-224 are backwards ranges
 337                                         color = (qbyte *) (&d_8to24table[c]);
 338                                         if (c >= 224) // fullbright ranges
 339                                                 R_DrawModelMesh(skinframe->shirt, NULL, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 340                                         else
 341                                         {
 342                                                 R_TintModel(aliasvertcolor, aliasvertcolor2, model->numverts, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 343                                                 R_DrawModelMesh(skinframe->shirt, aliasvertcolor2, 0, 0, 0);
 344                                         }
 345                                 }
 346                         }
 347                         else
 348                         {
 349                                 if (skinframe->merged)
 350                                         R_DrawModelMesh(skinframe->merged, aliasvertcolor, 0, 0, 0);
 351                                 else
 352                                 {
 353                                         if (skinframe->base) R_DrawModelMesh(skinframe->base, aliasvertcolor, 0, 0, 0);
 354                                         if (skinframe->pants) R_DrawModelMesh(skinframe->pants, aliasvertcolor, 0, 0, 0);
 355                                         if (skinframe->shirt) R_DrawModelMesh(skinframe->shirt, aliasvertcolor, 0, 0, 0);
 356                                 }
 357                         }
 358                         if (skinframe->glow) R_DrawModelMesh(skinframe->glow, NULL, 1 - fog, 1 - fog, 1 - fog);
 359                 }
 360                 else
 361                         R_DrawModelMesh(0, NULL, 1 - fog, 1 - fog, 1 - fog);
 362
 363                 aliasmeshinfo.tex[0] = R_GetTexture(skinframe->fog);
 364                 aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 365                 aliasmeshinfo.blendfunc2 = GL_ONE;
 366                 aliasmeshinfo.color = NULL;
 367
 368                 aliasmeshinfo.cr = fogcolor[0];
 369                 aliasmeshinfo.cg = fogcolor[1];
 370                 aliasmeshinfo.cb = fogcolor[2];
 371                 aliasmeshinfo.ca = currentrenderentity->alpha * fog;
 372
 373                 c_alias_polys += aliasmeshinfo.numtriangles;
 374                 R_Mesh_Draw(&aliasmeshinfo);
 375         }
 376         else if (currentrenderentity->colormap >= 0 || !skinframe->merged || skinframe->glow || !r_quickmodels.integer)
 377         {
 378                 R_SetupMDLMD2Frames(1 - fog, 1 - fog, 1 - fog);
 379
 380                 memset(&aliasmeshinfo, 0, sizeof(aliasmeshinfo));
 381
 382                 aliasmeshinfo.vertex = aliasvert;
 383                 aliasmeshinfo.vertexstep = sizeof(float[4]);
 384                 aliasmeshinfo.numverts = model->numverts;
 385                 aliasmeshinfo.numtriangles = model->numtris;
 386                 aliasmeshinfo.index = model->mdlmd2data_indices;
 387                 aliasmeshinfo.colorstep = sizeof(float[4]);
 388                 aliasmeshinfo.texcoords[0] = model->mdlmd2data_texcoords;
 389                 aliasmeshinfo.texcoordstep[0] = sizeof(float[2]);
 390
 391                 if (currentrenderentity->effects & EF_ADDITIVE)
 392                 {
 393                         aliasmeshinfo.transparent = true;
 394                         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 395                         aliasmeshinfo.blendfunc2 = GL_ONE;
 396                 }
 397                 else if (currentrenderentity->alpha != 1.0 || skinframe->fog != NULL)
 398                 {
 399                         aliasmeshinfo.transparent = true;
 400                         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 401                         aliasmeshinfo.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 402                 }
 403                 else
 404                 {
 405                         aliasmeshinfo.transparent = false;
 406                         aliasmeshinfo.blendfunc1 = GL_ONE;
 407                         aliasmeshinfo.blendfunc2 = GL_ZERO;
 408                 }
 409
 410                 if (skinframe->base || skinframe->pants || skinframe->shirt || skinframe->glow || skinframe->merged)
 411                 {
 412                         if (currentrenderentity->colormap >= 0 && (skinframe->base || skinframe->pants || skinframe->shirt))
 413                         {
 414                                 int c;
 415                                 qbyte *color;
 416                                 if (skinframe->base)
 417                                         R_DrawModelMesh(skinframe->base, aliasvertcolor, 0, 0, 0);
 418                                 if (skinframe->pants)
 419                                 {
 420                                         c = (currentrenderentity->colormap & 0xF) << 4;c += (c >= 128 && c < 224) ? 4 : 12; // 128-224 are backwards ranges
 421                                         color = (qbyte *) (&d_8to24table[c]);
 422                                         if (c >= 224) // fullbright ranges
 423                                                 R_DrawModelMesh(skinframe->pants, NULL, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 424                                         else
 425                                         {
 426                                                 R_TintModel(aliasvertcolor, aliasvertcolor2, model->numverts, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 427                                                 R_DrawModelMesh(skinframe->pants, aliasvertcolor2, 0, 0, 0);
 428                                         }
 429                                 }
 430                                 if (skinframe->shirt)
 431                                 {
 432                                         c = currentrenderentity->colormap & 0xF0      ;c += (c >= 128 && c < 224) ? 4 : 12; // 128-224 are backwards ranges
 433                                         color = (qbyte *) (&d_8to24table[c]);
 434                                         if (c >= 224) // fullbright ranges
 435                                                 R_DrawModelMesh(skinframe->shirt, NULL, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 436                                         else
 437                                         {
 438                                                 R_TintModel(aliasvertcolor, aliasvertcolor2, model->numverts, color[0] * (1.0f / 255.0f), color[1] * (1.0f / 255.0f), color[2] * (1.0f / 255.0f));
 439                                                 R_DrawModelMesh(skinframe->shirt, aliasvertcolor2, 0, 0, 0);
 440                                         }
 441                                 }
 442                         }
 443                         else
 444                         {
 445                                 if (skinframe->merged)
 446                                         R_DrawModelMesh(skinframe->merged, aliasvertcolor, 0, 0, 0);
 447                                 else
 448                                 {
 449                                         if (skinframe->base) R_DrawModelMesh(skinframe->base, aliasvertcolor, 0, 0, 0);
 450                                         if (skinframe->pants) R_DrawModelMesh(skinframe->pants, aliasvertcolor, 0, 0, 0);
 451                                         if (skinframe->shirt) R_DrawModelMesh(skinframe->shirt, aliasvertcolor, 0, 0, 0);
 452                                 }
 453                         }
 454                         if (skinframe->glow) R_DrawModelMesh(skinframe->glow, NULL, 1 - fog, 1 - fog, 1 - fog);
 455                 }
 456                 else
 457                         R_DrawModelMesh(0, NULL, 1 - fog, 1 - fog, 1 - fog);
 458         }
 459         else
 460         {
 461                 rmeshbufferinfo_t bufmesh;
 462                 memset(&bufmesh, 0, sizeof(bufmesh));
 463                 if (currentrenderentity->effects & EF_ADDITIVE)
 464                 {
 465                         bufmesh.transparent = true;
 466                         bufmesh.blendfunc1 = GL_SRC_ALPHA;
 467                         bufmesh.blendfunc2 = GL_ONE;
 468                 }
 469                 else if (currentrenderentity->alpha != 1.0 || skinframe->fog != NULL)
 470                 {
 471                         bufmesh.transparent = true;
 472                         bufmesh.blendfunc1 = GL_SRC_ALPHA;
 473                         bufmesh.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 474                 }
 475                 else
 476                 {
 477                         bufmesh.transparent = false;
 478                         bufmesh.blendfunc1 = GL_ONE;
 479                         bufmesh.blendfunc2 = GL_ZERO;
 480                 }
 481                 bufmesh.numtriangles = model->numtris;
 482                 bufmesh.numverts = model->numverts;
 483                 bufmesh.tex[0] = R_GetTexture(skinframe->merged);
 484
 485                 R_Mesh_Draw_GetBuffer(&bufmesh);
 486
 487                 aliasvert = bufmesh.vertex;
 488                 aliasvertcolor = bufmesh.color;
 489                 memcpy(bufmesh.index, model->mdlmd2data_indices, bufmesh.numtriangles * sizeof(int[3]));
 490                 memcpy(bufmesh.texcoords[0], model->mdlmd2data_texcoords, bufmesh.numverts * sizeof(float[2]));
 491
 492                 fog = bufmesh.colorscale * (1 - fog);
 493                 R_SetupMDLMD2Frames(fog, fog, fog);
 494
 495                 aliasvert = aliasvertbuf;
 496                 aliasvertcolor = aliasvertcolorbuf;
 497         }
 498 }
 499
 500 int ZymoticLerpBones(int count, zymbonematrix *bonebase, frameblend_t *blend, zymbone_t *bone)
 501 {
 502         int i;
 503         float lerp1, lerp2, lerp3, lerp4;
 504         zymbonematrix *out, rootmatrix, m, *bone1, *bone2, *bone3, *bone4;
 505
 506         // LordHavoc: combine transform from zym coordinate space to quake coordinate space with model to world transform matrix
 507         rootmatrix.m[0][0] = softwaretransform_matrix[0][1];
 508         rootmatrix.m[0][1] = -softwaretransform_matrix[0][0];
 509         rootmatrix.m[0][2] = softwaretransform_matrix[0][2];
 510         rootmatrix.m[0][3] = softwaretransform_matrix[0][3];
 511         rootmatrix.m[1][0] = softwaretransform_matrix[1][1];
 512         rootmatrix.m[1][1] = -softwaretransform_matrix[1][0];
 513         rootmatrix.m[1][2] = softwaretransform_matrix[1][2];
 514         rootmatrix.m[1][3] = softwaretransform_matrix[1][3];
 515         rootmatrix.m[2][0] = softwaretransform_matrix[2][1];
 516         rootmatrix.m[2][1] = -softwaretransform_matrix[2][0];
 517         rootmatrix.m[2][2] = softwaretransform_matrix[2][2];
 518         rootmatrix.m[2][3] = softwaretransform_matrix[2][3];
 519
 520         bone1 = bonebase + blend[0].frame * count;
 521         lerp1 = blend[0].lerp;
 522         if (blend[1].lerp)
 523         {
 524                 bone2 = bonebase + blend[1].frame * count;
 525                 lerp2 = blend[1].lerp;
 526                 if (blend[2].lerp)
 527                 {
 528                         bone3 = bonebase + blend[2].frame * count;
 529                         lerp3 = blend[2].lerp;
 530                         if (blend[3].lerp)
 531                         {
 532                                 // 4 poses
 533                                 bone4 = bonebase + blend[3].frame * count;
 534                                 lerp4 = blend[3].lerp;
 535                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 536                                 {
 537                                         // interpolate matrices
 538                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3 + bone4->m[0][0] * lerp4;
 539                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3 + bone4->m[0][1] * lerp4;
 540                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3 + bone4->m[0][2] * lerp4;
 541                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3 + bone4->m[0][3] * lerp4;
 542                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3 + bone4->m[1][0] * lerp4;
 543                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3 + bone4->m[1][1] * lerp4;
 544                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3 + bone4->m[1][2] * lerp4;
 545                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3 + bone4->m[1][3] * lerp4;
 546                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3 + bone4->m[2][0] * lerp4;
 547                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3 + bone4->m[2][1] * lerp4;
 548                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3 + bone4->m[2][2] * lerp4;
 549                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3 + bone4->m[2][3] * lerp4;
 550                                         if (bone->parent >= 0)
 551                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 552                                         else
 553                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 554                                         bone1++;
 555                                         bone2++;
 556                                         bone3++;
 557                                         bone4++;
 558                                         bone++;
 559                                 }
 560                         }
 561                         else
 562                         {
 563                                 // 3 poses
 564                                 for (i = 0, out = zymbonepose;i < count;i++, out++)
 565                                 {
 566                                         // interpolate matrices
 567                                         m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2 + bone3->m[0][0] * lerp3;
 568                                         m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2 + bone3->m[0][1] * lerp3;
 569                                         m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2 + bone3->m[0][2] * lerp3;
 570                                         m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2 + bone3->m[0][3] * lerp3;
 571                                         m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2 + bone3->m[1][0] * lerp3;
 572                                         m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2 + bone3->m[1][1] * lerp3;
 573                                         m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2 + bone3->m[1][2] * lerp3;
 574                                         m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2 + bone3->m[1][3] * lerp3;
 575                                         m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2 + bone3->m[2][0] * lerp3;
 576                                         m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2 + bone3->m[2][1] * lerp3;
 577                                         m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2 + bone3->m[2][2] * lerp3;
 578                                         m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2 + bone3->m[2][3] * lerp3;
 579                                         if (bone->parent >= 0)
 580                                                 R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 581                                         else
 582                                                 R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 583                                         bone1++;
 584                                         bone2++;
 585                                         bone3++;
 586                                         bone++;
 587                                 }
 588                         }
 589                 }
 590                 else
 591                 {
 592                         // 2 poses
 593                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 594                         {
 595                                 // interpolate matrices
 596                                 m.m[0][0] = bone1->m[0][0] * lerp1 + bone2->m[0][0] * lerp2;
 597                                 m.m[0][1] = bone1->m[0][1] * lerp1 + bone2->m[0][1] * lerp2;
 598                                 m.m[0][2] = bone1->m[0][2] * lerp1 + bone2->m[0][2] * lerp2;
 599                                 m.m[0][3] = bone1->m[0][3] * lerp1 + bone2->m[0][3] * lerp2;
 600                                 m.m[1][0] = bone1->m[1][0] * lerp1 + bone2->m[1][0] * lerp2;
 601                                 m.m[1][1] = bone1->m[1][1] * lerp1 + bone2->m[1][1] * lerp2;
 602                                 m.m[1][2] = bone1->m[1][2] * lerp1 + bone2->m[1][2] * lerp2;
 603                                 m.m[1][3] = bone1->m[1][3] * lerp1 + bone2->m[1][3] * lerp2;
 604                                 m.m[2][0] = bone1->m[2][0] * lerp1 + bone2->m[2][0] * lerp2;
 605                                 m.m[2][1] = bone1->m[2][1] * lerp1 + bone2->m[2][1] * lerp2;
 606                                 m.m[2][2] = bone1->m[2][2] * lerp1 + bone2->m[2][2] * lerp2;
 607                                 m.m[2][3] = bone1->m[2][3] * lerp1 + bone2->m[2][3] * lerp2;
 608                                 if (bone->parent >= 0)
 609                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 610                                 else
 611                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 612                                 bone1++;
 613                                 bone2++;
 614                                 bone++;
 615                         }
 616                 }
 617         }
 618         else
 619         {
 620                 // 1 pose
 621                 if (lerp1 != 1)
 622                 {
 623                         // lerp != 1.0
 624                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 625                         {
 626                                 // interpolate matrices
 627                                 m.m[0][0] = bone1->m[0][0] * lerp1;
 628                                 m.m[0][1] = bone1->m[0][1] * lerp1;
 629                                 m.m[0][2] = bone1->m[0][2] * lerp1;
 630                                 m.m[0][3] = bone1->m[0][3] * lerp1;
 631                                 m.m[1][0] = bone1->m[1][0] * lerp1;
 632                                 m.m[1][1] = bone1->m[1][1] * lerp1;
 633                                 m.m[1][2] = bone1->m[1][2] * lerp1;
 634                                 m.m[1][3] = bone1->m[1][3] * lerp1;
 635                                 m.m[2][0] = bone1->m[2][0] * lerp1;
 636                                 m.m[2][1] = bone1->m[2][1] * lerp1;
 637                                 m.m[2][2] = bone1->m[2][2] * lerp1;
 638                                 m.m[2][3] = bone1->m[2][3] * lerp1;
 639                                 if (bone->parent >= 0)
 640                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &m.m[0][0], &out->m[0][0]);
 641                                 else
 642                                         R_ConcatTransforms(&rootmatrix.m[0][0], &m.m[0][0], &out->m[0][0]);
 643                                 bone1++;
 644                                 bone++;
 645                         }
 646                 }
 647                 else
 648                 {
 649                         // lerp == 1.0
 650                         for (i = 0, out = zymbonepose;i < count;i++, out++)
 651                         {
 652                                 if (bone->parent >= 0)
 653                                         R_ConcatTransforms(&zymbonepose[bone->parent].m[0][0], &bone1->m[0][0], &out->m[0][0]);
 654                                 else
 655                                         R_ConcatTransforms(&rootmatrix.m[0][0], &bone1->m[0][0], &out->m[0][0]);
 656                                 bone1++;
 657                                 bone++;
 658                         }
 659                 }
 660         }
 661         return true;
 662 }
 663
 664 void ZymoticTransformVerts(int vertcount, int *bonecounts, zymvertex_t *vert)
 665 {
 666         int c;
 667         float *out = aliasvert;
 668         zymbonematrix *matrix;
 669         while(vertcount--)
 670         {
 671                 c = *bonecounts++;
 672                 // FIXME: validate bonecounts at load time (must be >= 1)
 673                 // FIXME: need 4th component in origin, for how much of the translate to blend in
 674                 if (c == 1)
 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                 else
 683                 {
 684                         VectorClear(out);
 685                         while(c--)
 686                         {
 687                                 matrix = &zymbonepose[vert->bonenum];
 688                                 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];
 689                                 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];
 690                                 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];
 691                                 vert++;
 692                         }
 693                 }
 694                 out += 4;
 695         }
 696 }
 697
 698 void ZymoticCalcNormals(int vertcount, int shadercount, int *renderlist)
 699 {
 700         int a, b, c, d;
 701         float *out, v1[3], v2[3], normal[3], s;
 702         int *u;
 703         // clear normals
 704         memset(aliasvertnorm, 0, sizeof(float) * vertcount * 3);
 705         memset(aliasvertusage, 0, sizeof(int) * vertcount);
 706         // parse render list and accumulate surface normals
 707         while(shadercount--)
 708         {
 709                 d = *renderlist++;
 710                 while (d--)
 711                 {
 712                         a = renderlist[0]*4;
 713                         b = renderlist[1]*4;
 714                         c = renderlist[2]*4;
 715                         v1[0] = aliasvert[a+0] - aliasvert[b+0];
 716                         v1[1] = aliasvert[a+1] - aliasvert[b+1];
 717                         v1[2] = aliasvert[a+2] - aliasvert[b+2];
 718                         v2[0] = aliasvert[c+0] - aliasvert[b+0];
 719                         v2[1] = aliasvert[c+1] - aliasvert[b+1];
 720                         v2[2] = aliasvert[c+2] - aliasvert[b+2];
 721                         CrossProduct(v1, v2, normal);
 722                         VectorNormalizeFast(normal);
 723                         // add surface normal to vertices
 724                         a = renderlist[0] * 3;
 725                         aliasvertnorm[a+0] += normal[0];
 726                         aliasvertnorm[a+1] += normal[1];
 727                         aliasvertnorm[a+2] += normal[2];
 728                         aliasvertusage[renderlist[0]]++;
 729                         a = renderlist[1] * 3;
 730                         aliasvertnorm[a+0] += normal[0];
 731                         aliasvertnorm[a+1] += normal[1];
 732                         aliasvertnorm[a+2] += normal[2];
 733                         aliasvertusage[renderlist[1]]++;
 734                         a = renderlist[2] * 3;
 735                         aliasvertnorm[a+0] += normal[0];
 736                         aliasvertnorm[a+1] += normal[1];
 737                         aliasvertnorm[a+2] += normal[2];
 738                         aliasvertusage[renderlist[2]]++;
 739                         renderlist += 3;
 740                 }
 741         }
 742         // FIXME: precalc this
 743         // average surface normals
 744         out = aliasvertnorm;
 745         u = aliasvertusage;
 746         while(vertcount--)
 747         {
 748                 if (*u > 1)
 749                 {
 750                         s = ixtable[*u];
 751                         out[0] *= s;
 752                         out[1] *= s;
 753                         out[2] *= s;
 754                 }
 755                 u++;
 756                 out += 3;
 757         }
 758 }
 759
 760 void R_DrawZymoticModelMesh(zymtype1header_t *m)
 761 {
 762         int i, *renderlist;
 763         rtexture_t **texture;
 764
 765         // FIXME: do better fog
 766         renderlist = (int *)(m->lump_render.start + (int) m);
 767         texture = (rtexture_t **)(m->lump_shaders.start + (int) m);
 768
 769         aliasmeshinfo.vertex = aliasvert;
 770         aliasmeshinfo.vertexstep = sizeof(float[4]);
 771         aliasmeshinfo.color = aliasvertcolor;
 772         aliasmeshinfo.colorstep = sizeof(float[4]);
 773         aliasmeshinfo.texcoords[0] = (float *)(m->lump_texcoords.start + (int) m);
 774         aliasmeshinfo.texcoordstep[0] = sizeof(float[2]);
 775
 776         for (i = 0;i < m->numshaders;i++)
 777         {
 778                 aliasmeshinfo.tex[0] = R_GetTexture(texture[i]);
 779                 if (currentrenderentity->effects & EF_ADDITIVE)
 780                 {
 781                         aliasmeshinfo.transparent = true;
 782                         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 783                         aliasmeshinfo.blendfunc2 = GL_ONE;
 784                 }
 785                 else if (currentrenderentity->alpha != 1.0 || R_TextureHasAlpha(texture[i]))
 786                 {
 787                         aliasmeshinfo.transparent = true;
 788                         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 789                         aliasmeshinfo.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 790                 }
 791                 else
 792                 {
 793                         aliasmeshinfo.transparent = false;
 794                         aliasmeshinfo.blendfunc1 = GL_ONE;
 795                         aliasmeshinfo.blendfunc2 = GL_ZERO;
 796                 }
 797                 aliasmeshinfo.numtriangles = *renderlist++;
 798                 aliasmeshinfo.index = renderlist;
 799                 c_alias_polys += aliasmeshinfo.numtriangles;
 800                 R_Mesh_Draw(&aliasmeshinfo);
 801                 renderlist += aliasmeshinfo.numtriangles * 3;
 802         }
 803 }
 804
 805 void R_DrawZymoticModelMeshFog(vec3_t org, zymtype1header_t *m, float fog)
 806 {
 807         int i, *renderlist;
 808
 809         // FIXME: do better fog
 810         renderlist = (int *)(m->lump_render.start + (int) m);
 811
 812         aliasmeshinfo.tex[0] = 0;
 813         aliasmeshinfo.blendfunc1 = GL_SRC_ALPHA;
 814         aliasmeshinfo.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
 815
 816         aliasmeshinfo.cr = fogcolor[0];
 817         aliasmeshinfo.cg = fogcolor[1];
 818         aliasmeshinfo.cb = fogcolor[2];
 819         aliasmeshinfo.ca = currentrenderentity->alpha * fog;
 820
 821         for (i = 0;i < m->numshaders;i++)
 822         {
 823                 aliasmeshinfo.numtriangles = *renderlist++;
 824                 aliasmeshinfo.index = renderlist;
 825                 c_alias_polys += aliasmeshinfo.numtriangles;
 826                 R_Mesh_Draw(&aliasmeshinfo);
 827                 renderlist += aliasmeshinfo.numtriangles * 3;
 828         }
 829 }
 830
 831 void R_DrawZymoticModel (float fog)
 832 {
 833         zymtype1header_t *m;
 834
 835         // FIXME: do better fog
 836         m = currentrenderentity->model->zymdata_header;
 837         ZymoticLerpBones(m->numbones, (zymbonematrix *)(m->lump_poses.start + (int) m), currentrenderentity->frameblend, (zymbone_t *)(m->lump_bones.start + (int) m));
 838         ZymoticTransformVerts(m->numverts, (int *)(m->lump_vertbonecounts.start + (int) m), (zymvertex_t *)(m->lump_verts.start + (int) m));
 839         ZymoticCalcNormals(m->numverts, m->numshaders, (int *)(m->lump_render.start + (int) m));
 840
 841         R_LightModel(m->numverts, 1 - fog, 1 - fog, 1 - fog, true);
 842
 843         memset(&aliasmeshinfo, 0, sizeof(aliasmeshinfo));
 844         aliasmeshinfo.numverts = m->numverts;
 845
 846         R_DrawZymoticModelMesh(m);
 847
 848         if (fog)
 849                 R_DrawZymoticModelMeshFog(currentrenderentity->origin, m, fog);
 850 }
 851
 852 void R_DrawAliasModel (void)
 853 {
 854         float fog;
 855         vec3_t diff;
 856
 857         if (currentrenderentity->alpha < (1.0f / 64.0f))
 858                 return; // basically completely transparent
 859
 860         c_models++;
 861
 862         softwaretransformforentity(currentrenderentity);
 863
 864         fog = 0;
 865         if (fogenabled)
 866         {
 867                 VectorSubtract(currentrenderentity->origin, r_origin, diff);
 868                 fog = DotProduct(diff,diff);
 869                 if (fog < 0.01f)
 870                         fog = 0.01f;
 871                 fog = exp(fogdensity/fog);
 872                 if (fog > 1)
 873                         fog = 1;
 874                 if (fog < 0.01f)
 875                         fog = 0;
 876                 // fog method: darken, additive fog
 877                 // 1. render model as normal, scaled by inverse of fog alpha (darkens it)
 878                 // 2. render fog as additive
 879         }
 880
 881         if (currentrenderentity->model->aliastype == ALIASTYPE_ZYM)
 882                 R_DrawZymoticModel(fog);
 883         else
 884                 R_DrawQ1Q2AliasModel(fog);
 885 }
 886