gl_rsurf.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // r_surf.c: surface-related refresh code
  21
  22 #include "quakedef.h"
  23 #include "r_shadow.h"
  24
  25 #define MAX_LIGHTMAP_SIZE 256
  26
  27 cvar_t r_ambient = {0, "r_ambient", "0"};
  28 cvar_t r_drawportals = {0, "r_drawportals", "0"};
  29 cvar_t r_testvis = {0, "r_testvis", "0"};
  30 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
  31 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
  32 cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
  33 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
  34 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
  35 cvar_t gl_lightmaps = {0, "gl_lightmaps", "0"};
  36
  37 // flag arrays used for visibility checking on world model
  38 // (all other entities have no per-surface/per-leaf visibility checks)
  39 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
  40 qbyte r_pvsbits[(32768+7)>>3];
  41 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
  42 qbyte r_worldleafvisible[32768];
  43 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_surfaces
  44 qbyte r_worldsurfacevisible[262144];
  45
  46 /*
  47 ===============
  48 R_BuildLightMap
  49
  50 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  51 ===============
  52 */
  53 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  54 {
  55         int smax, tmax, i, j, size, size3, maps, stride, l;
  56         unsigned int *bl, scale;
  57         qbyte *lightmap, *out, *stain;
  58         static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  59         static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  60
  61         // update cached lighting info
  62         surface->cached_dlight = 0;
  63
  64         smax = (surface->extents[0]>>4)+1;
  65         tmax = (surface->extents[1]>>4)+1;
  66         size = smax*tmax;
  67         size3 = size*3;
  68         lightmap = surface->samples;
  69
  70 // set to full bright if no light data
  71         bl = intblocklights;
  72         if (!ent->model->brushq1.lightdata)
  73         {
  74                 for (i = 0;i < size3;i++)
  75                         bl[i] = 255*256;
  76         }
  77         else
  78         {
  79 // clear to no light
  80                 memset(bl, 0, size*3*sizeof(unsigned int));
  81
  82 // add all the lightmaps
  83                 if (lightmap)
  84                 {
  85                         bl = intblocklights;
  86                         for (maps = 0;maps < MAXLIGHTMAPS && surface->styles[maps] != 255;maps++, lightmap += size3)
  87                                 for (scale = d_lightstylevalue[surface->styles[maps]], i = 0;i < size3;i++)
  88                                         bl[i] += lightmap[i] * scale;
  89                 }
  90         }
  91
  92         stain = surface->stainsamples;
  93         bl = intblocklights;
  94         out = templight;
  95         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  96         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  97         // be doubled during rendering to achieve 2x overbright
  98         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  99         if (ent->model->brushq1.lightmaprgba)
 100         {
 101                 stride = (surface->lightmaptexturestride - smax) * 4;
 102                 for (i = 0;i < tmax;i++, out += stride)
 103                 {
 104                         for (j = 0;j < smax;j++)
 105                         {
 106                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 107                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 108                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 109                                 *out++ = 255;
 110                         }
 111                 }
 112         }
 113         else
 114         {
 115                 stride = (surface->lightmaptexturestride - smax) * 3;
 116                 for (i = 0;i < tmax;i++, out += stride)
 117                 {
 118                         for (j = 0;j < smax;j++)
 119                         {
 120                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 121                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 122                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 123                         }
 124                 }
 125         }
 126
 127         R_UpdateTexture(surface->lightmaptexture, templight);
 128 }
 129
 130 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 131 {
 132         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 133         msurface_t *surface, *endsurface;
 134         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 135         qbyte *bl;
 136         vec3_t impact;
 137
 138         maxdist = radius * radius;
 139         invradius = 1.0f / radius;
 140
 141 loc0:
 142         if (!node->plane)
 143                 return;
 144         ndist = PlaneDiff(origin, node->plane);
 145         if (ndist > radius)
 146         {
 147                 node = node->children[0];
 148                 goto loc0;
 149         }
 150         if (ndist < -radius)
 151         {
 152                 node = node->children[1];
 153                 goto loc0;
 154         }
 155
 156         dist2 = ndist * ndist;
 157         maxdist3 = maxdist - dist2;
 158
 159         if (node->plane->type < 3)
 160         {
 161                 VectorCopy(origin, impact);
 162                 impact[node->plane->type] -= ndist;
 163         }
 164         else
 165         {
 166                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 167                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 168                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 169         }
 170
 171         for (surface = model->brush.data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 172         {
 173                 if (surface->stainsamples)
 174                 {
 175                         smax = (surface->extents[0] >> 4) + 1;
 176                         tmax = (surface->extents[1] >> 4) + 1;
 177
 178                         impacts = DotProduct (impact, surface->texinfo->vecs[0]) + surface->texinfo->vecs[0][3] - surface->texturemins[0];
 179                         impactt = DotProduct (impact, surface->texinfo->vecs[1]) + surface->texinfo->vecs[1][3] - surface->texturemins[1];
 180
 181                         s = bound(0, impacts, smax * 16) - impacts;
 182                         t = bound(0, impactt, tmax * 16) - impactt;
 183                         i = s * s + t * t + dist2;
 184                         if (i > maxdist)
 185                                 continue;
 186
 187                         // reduce calculations
 188                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 189                                 sdtable[s] = i * i + dist2;
 190
 191                         bl = surface->stainsamples;
 192                         smax3 = smax * 3;
 193                         stained = false;
 194
 195                         i = impactt;
 196                         for (t = 0;t < tmax;t++, i -= 16)
 197                         {
 198                                 td = i * i;
 199                                 // make sure some part of it is visible on this line
 200                                 if (td < maxdist3)
 201                                 {
 202                                         maxdist2 = maxdist - td;
 203                                         for (s = 0;s < smax;s++)
 204                                         {
 205                                                 if (sdtable[s] < maxdist2)
 206                                                 {
 207                                                         ratio = lhrandom(0.0f, 1.0f);
 208                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 209                                                         if (a >= (1.0f / 64.0f))
 210                                                         {
 211                                                                 if (a > 1)
 212                                                                         a = 1;
 213                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 214                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 215                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 216                                                                 stained = true;
 217                                                         }
 218                                                 }
 219                                                 bl += 3;
 220                                         }
 221                                 }
 222                                 else // skip line
 223                                         bl += smax3;
 224                         }
 225                         // force lightmap upload
 226                         if (stained)
 227                                 surface->cached_dlight = true;
 228                 }
 229         }
 230
 231         if (node->children[0]->plane)
 232         {
 233                 if (node->children[1]->plane)
 234                 {
 235                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 236                         node = node->children[1];
 237                         goto loc0;
 238                 }
 239                 else
 240                 {
 241                         node = node->children[0];
 242                         goto loc0;
 243                 }
 244         }
 245         else if (node->children[1]->plane)
 246         {
 247                 node = node->children[1];
 248                 goto loc0;
 249         }
 250 }
 251
 252 void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
 253 {
 254         int n;
 255         float fcolor[8];
 256         entity_render_t *ent;
 257         model_t *model;
 258         vec3_t org;
 259         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes)
 260                 return;
 261         fcolor[0] = cr1;
 262         fcolor[1] = cg1;
 263         fcolor[2] = cb1;
 264         fcolor[3] = ca1 * (1.0f / 64.0f);
 265         fcolor[4] = cr2 - cr1;
 266         fcolor[5] = cg2 - cg1;
 267         fcolor[6] = cb2 - cb1;
 268         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 269
 270         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 271
 272         // look for embedded bmodels
 273         for (n = 0;n < cl_num_brushmodel_entities;n++)
 274         {
 275                 ent = cl_brushmodel_entities[n];
 276                 model = ent->model;
 277                 if (model && model->name[0] == '*')
 278                 {
 279                         Mod_CheckLoaded(model);
 280                         if (model->brush.data_nodes)
 281                         {
 282                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 283                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 284                         }
 285                 }
 286         }
 287 }
 288
 289
 290 /*
 291 =============================================================
 292
 293         BRUSH MODELS
 294
 295 =============================================================
 296 */
 297
 298 static float *RSurf_GetVertexPointer(const entity_render_t *ent, const msurface_t *surface)
 299 {
 300         if (surface->texture->textureflags & (Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
 301         {
 302                 texture_t *texture = surface->texture;
 303                 int i, j;
 304                 float center[3], center2[3], forward[3], right[3], up[3], v[4][3];
 305                 matrix4x4_t matrix1, imatrix1;
 306                 R_Mesh_Matrix(&r_identitymatrix);
 307                 // a single autosprite surface can contain multiple sprites...
 308                 for (j = 0;j < surface->mesh.num_vertices - 3;j += 4)
 309                 {
 310                         VectorClear(center);
 311                         for (i = 0;i < 4;i++)
 312                                 VectorAdd(center, surface->mesh.data_vertex3f + (j+i) * 3, center);
 313                         VectorScale(center, 0.25f, center);
 314                         Matrix4x4_Transform(&ent->matrix, center, center2);
 315                         // FIXME: calculate vectors from triangle edges instead of using texture vectors as an easy way out?
 316                         Matrix4x4_FromVectors(&matrix1, surface->mesh.data_normal3f + j*3, surface->mesh.data_svector3f + j*3, surface->mesh.data_tvector3f + j*3, center);
 317                         Matrix4x4_Invert_Simple(&imatrix1, &matrix1);
 318                         for (i = 0;i < 4;i++)
 319                                 Matrix4x4_Transform(&imatrix1, surface->mesh.data_vertex3f + (j+i)*3, v[i]);
 320                         if (texture->textureflags & Q3TEXTUREFLAG_AUTOSPRITE2)
 321                         {
 322                                 forward[0] = r_vieworigin[0] - center2[0];
 323                                 forward[1] = r_vieworigin[1] - center2[1];
 324                                 forward[2] = 0;
 325                                 VectorNormalize(forward);
 326                                 right[0] = forward[1];
 327                                 right[1] = -forward[0];
 328                                 right[2] = 0;
 329                                 up[0] = 0;
 330                                 up[1] = 0;
 331                                 up[2] = 1;
 332                         }
 333                         else
 334                         {
 335                                 VectorCopy(r_viewforward, forward);
 336                                 VectorCopy(r_viewright, right);
 337                                 VectorCopy(r_viewup, up);
 338                         }
 339                         for (i = 0;i < 4;i++)
 340                                 VectorMAMAMAM(1, center2, v[i][0], forward, v[i][1], right, v[i][2], up, varray_vertex3f + (i+j) * 3);
 341                 }
 342                 return varray_vertex3f;
 343         }
 344         else
 345                 return surface->mesh.data_vertex3f;
 346 }
 347
 348 void R_UpdateTextureInfo(const entity_render_t *ent, texture_t *t)
 349 {
 350         // we don't need to set currentframe if t->animated is false because
 351         // it was already set up by the texture loader for non-animating
 352         if (t->animated)
 353         {
 354                 t->currentframe = t->anim_frames[ent->frame != 0][(t->anim_total[ent->frame != 0] >= 2) ? ((int)(r_refdef.time * 5.0f) % t->anim_total[ent->frame != 0]) : 0];
 355                 t = t->currentframe;
 356         }
 357         t->currentmaterialflags = t->basematerialflags;
 358         t->currentalpha = ent->alpha;
 359         if (t->basematerialflags & MATERIALFLAG_WATERALPHA)
 360                 t->currentalpha *= r_wateralpha.value;
 361         if (!(ent->flags & RENDER_LIGHT))
 362                 t->currentmaterialflags |= MATERIALFLAG_FULLBRIGHT;
 363         if (ent->effects & EF_ADDITIVE)
 364                 t->currentmaterialflags |= MATERIALFLAG_ADD | MATERIALFLAG_TRANSPARENT;
 365         else if (t->currentalpha < 1)
 366                 t->currentmaterialflags |= MATERIALFLAG_ALPHA | MATERIALFLAG_TRANSPARENT;
 367 }
 368
 369 matrix4x4_t r_surf_waterscrollmatrix;
 370
 371 void R_UpdateAllTextureInfo(entity_render_t *ent)
 372 {
 373         int i;
 374         Matrix4x4_CreateTranslate(&r_surf_waterscrollmatrix, sin(r_refdef.time) * 0.025 * r_waterscroll.value, sin(r_refdef.time * 0.8f) * 0.025 * r_waterscroll.value, 0);
 375         if (ent->model)
 376                 for (i = 0;i < ent->model->brush.num_textures;i++)
 377                         R_UpdateTextureInfo(ent, ent->model->brush.data_textures + i);
 378 }
 379
 380 static void R_DrawSurfaceList(const entity_render_t *ent, texture_t *texture, int texturenumsurfaces, const msurface_t **texturesurfacelist, const vec3_t modelorg)
 381 {
 382         int i;
 383         int texturesurfaceindex;
 384         const float *v, *vertex3f;
 385         float *c;
 386         float diff[3];
 387         float f, r, g, b, a, base, colorscale;
 388         const msurface_t *surface;
 389         qboolean dolightmap;
 390         qboolean dobase;
 391         qboolean doambient;
 392         qboolean dodetail;
 393         qboolean doglow;
 394         qboolean dofogpass;
 395         qboolean fogallpasses;
 396         qboolean waterscrolling;
 397         rmeshstate_t m;
 398         texture = texture->currentframe;
 399         if (texture->currentmaterialflags & MATERIALFLAG_NODRAW)
 400                 return;
 401         c_faces += texturenumsurfaces;
 402         // gl_lightmaps debugging mode skips normal texturing
 403         if (gl_lightmaps.integer)
 404         {
 405                 GL_BlendFunc(GL_ONE, GL_ZERO);
 406                 GL_DepthMask(true);
 407                 GL_DepthTest(true);
 408                 qglDisable(GL_CULL_FACE);
 409                 GL_Color(1, 1, 1, 1);
 410                 memset(&m, 0, sizeof(m));
 411                 R_Mesh_State(&m);
 412                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 413                 {
 414                         surface = texturesurfacelist[texturesurfaceindex];
 415                         R_Mesh_TexBind(0, R_GetTexture(surface->lightmaptexture));
 416                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordlightmap2f);
 417                         R_Mesh_ColorPointer(surface->lightmaptexture ? NULL : surface->mesh.data_lightmapcolor4f);
 418                         R_Mesh_VertexPointer(surface->mesh.data_vertex3f);
 419                         GL_LockArrays(0, surface->mesh.num_vertices);
 420                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 421                         GL_LockArrays(0, 0);
 422                 }
 423                 qglEnable(GL_CULL_FACE);
 424                 return;
 425         }
 426         GL_DepthTest(!(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST));
 427         GL_DepthMask(!(texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT));
 428         if (texture->currentmaterialflags & MATERIALFLAG_ADD)
 429                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 430         else if (texture->currentmaterialflags & MATERIALFLAG_ALPHA)
 431                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 432         else
 433                 GL_BlendFunc(GL_ONE, GL_ZERO);
 434         // water waterscrolling in texture matrix
 435         waterscrolling = (texture->currentmaterialflags & MATERIALFLAG_WATER) && r_waterscroll.value != 0;
 436         if (texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
 437                 qglDisable(GL_CULL_FACE);
 438         if (texture->currentmaterialflags & MATERIALFLAG_SKY)
 439         {
 440                 if (skyrendernow)
 441                 {
 442                         skyrendernow = false;
 443                         if (skyrendermasked)
 444                                 R_Sky();
 445                 }
 446                 // LordHavoc: HalfLife maps have freaky skypolys...
 447                 if (!ent->model->brush.ishlbsp)
 448                 {
 449                         R_Mesh_Matrix(&ent->matrix);
 450                         GL_Color(fogcolor[0], fogcolor[1], fogcolor[2], 1);
 451                         if (skyrendermasked)
 452                         {
 453                                 // depth-only (masking)
 454                                 GL_ColorMask(0,0,0,0);
 455                                 // just to make sure that braindead drivers don't draw anything
 456                                 // despite that colormask...
 457                                 GL_BlendFunc(GL_ZERO, GL_ONE);
 458                         }
 459                         else
 460                         {
 461                                 // fog sky
 462                                 GL_BlendFunc(GL_ONE, GL_ZERO);
 463                         }
 464                         GL_DepthMask(true);
 465                         GL_DepthTest(true);
 466                         memset(&m, 0, sizeof(m));
 467                         R_Mesh_State(&m);
 468                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 469                         {
 470                                 surface = texturesurfacelist[texturesurfaceindex];
 471                                 R_Mesh_VertexPointer(surface->mesh.data_vertex3f);
 472                                 GL_LockArrays(0, surface->mesh.num_vertices);
 473                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 474                                 GL_LockArrays(0, 0);
 475                         }
 476                         GL_ColorMask(r_refdef.colormask[0], r_refdef.colormask[1], r_refdef.colormask[2], 1);
 477                 }
 478         }
 479         else if ((texture->currentmaterialflags & MATERIALFLAG_WATER) && r_watershader.value && gl_textureshader && !texture->skin.glow && !fogenabled && ent->colormod[0] == 1 && ent->colormod[1] == 1 && ent->colormod[2] == 1)
 480         {
 481                 // NVIDIA Geforce3 distortion texture shader on water
 482                 float args[4] = {0.05f,0,0,0.04f};
 483                 memset(&m, 0, sizeof(m));
 484                 m.tex[0] = R_GetTexture(mod_shared_distorttexture[(int)(r_refdef.time * 16)&63]);
 485                 m.tex[1] = R_GetTexture(texture->skin.base);
 486                 m.texcombinergb[0] = GL_REPLACE;
 487                 m.texcombinergb[1] = GL_REPLACE;
 488                 Matrix4x4_CreateFromQuakeEntity(&m.texmatrix[0], 0, 0, 0, 0, 0, 0, r_watershader.value);
 489                 m.texmatrix[1] = r_surf_waterscrollmatrix;
 490                 R_Mesh_State(&m);
 491
 492                 GL_Color(1, 1, 1, texture->currentalpha);
 493                 GL_ActiveTexture(0);
 494                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 495                 GL_ActiveTexture(1);
 496                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_OFFSET_TEXTURE_2D_NV);
 497                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_PREVIOUS_TEXTURE_INPUT_NV, GL_TEXTURE0_ARB);
 498                 qglTexEnvfv(GL_TEXTURE_SHADER_NV, GL_OFFSET_TEXTURE_MATRIX_NV, &args[0]);
 499                 qglEnable(GL_TEXTURE_SHADER_NV);
 500
 501                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 502                 {
 503                         surface = texturesurfacelist[texturesurfaceindex];
 504                         R_Mesh_VertexPointer(RSurf_GetVertexPointer(ent, surface));
 505                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
 506                         R_Mesh_TexCoordPointer(1, 2, surface->mesh.data_texcoordtexture2f);
 507                         GL_LockArrays(0, surface->mesh.num_vertices);
 508                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 509                         GL_LockArrays(0, 0);
 510                 }
 511
 512                 qglDisable(GL_TEXTURE_SHADER_NV);
 513                 qglTexEnvi(GL_TEXTURE_SHADER_NV, GL_SHADER_OPERATION_NV, GL_TEXTURE_2D);
 514                 GL_ActiveTexture(0);
 515         }
 516         else if (texture->currentmaterialflags & (MATERIALFLAG_WATER | MATERIALFLAG_WALL))
 517         {
 518                 // normal surface (wall or water)
 519                 dobase = true;
 520                 dolightmap = !(texture->currentmaterialflags & MATERIALFLAG_FULLBRIGHT);
 521                 doambient = r_ambient.value >= (1/64.0f);
 522                 dodetail = r_detailtextures.integer && texture->skin.detail != NULL && !(texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT);
 523                 doglow = texture->skin.glow != NULL;
 524                 dofogpass = fogenabled && !(texture->currentmaterialflags & MATERIALFLAG_ADD);
 525                 fogallpasses = fogenabled && !(texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT);
 526                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 527                 {
 528                         if (dobase && dolightmap && gl_combine.integer)
 529                         {
 530                                 dobase = false;
 531                                 memset(&m, 0, sizeof(m));
 532                                 m.tex[1] = R_GetTexture(texture->skin.base);
 533                                 if (waterscrolling)
 534                                         m.texmatrix[1] = r_surf_waterscrollmatrix;
 535                                 m.texrgbscale[1] = 2;
 536                                 m.pointer_color = varray_color4f;
 537                                 R_Mesh_State(&m);
 538                                 colorscale = 1;
 539                                 r = ent->colormod[0] * colorscale;
 540                                 g = ent->colormod[1] * colorscale;
 541                                 b = ent->colormod[2] * colorscale;
 542                                 a = texture->currentalpha;
 543                                 base = r_ambient.value * (1.0f / 64.0f);
 544                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 545                                 {
 546                                         surface = texturesurfacelist[texturesurfaceindex];
 547                                         vertex3f = RSurf_GetVertexPointer(ent, surface);
 548                                         R_Mesh_VertexPointer(vertex3f);
 549                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordlightmap2f);
 550                                         R_Mesh_TexCoordPointer(1, 2, surface->mesh.data_texcoordtexture2f);
 551                                         if (surface->lightmaptexture)
 552                                         {
 553                                                 R_Mesh_TexBind(0, R_GetTexture(surface->lightmaptexture));
 554                                                 if (fogallpasses)
 555                                                 {
 556                                                         R_Mesh_ColorPointer(varray_color4f);
 557                                                         for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 558                                                         {
 559                                                                 VectorSubtract(v, modelorg, diff);
 560                                                                 f = 1 - exp(fogdensity/DotProduct(diff, diff));
 561                                                                 c[0] = f * r;
 562                                                                 c[1] = f * g;
 563                                                                 c[2] = f * b;
 564                                                                 c[3] = a;
 565                                                         }
 566                                                 }
 567                                                 else
 568                                                 {
 569                                                         R_Mesh_ColorPointer(NULL);
 570                                                         GL_Color(r, g, b, a);
 571                                                 }
 572                                         }
 573                                         else
 574                                         {
 575                                                 R_Mesh_TexBind(0, R_GetTexture(r_texture_white));
 576                                                 R_Mesh_ColorPointer(varray_color4f);
 577                                                 if (surface->styles[0] != 255)
 578                                                 {
 579                                                         for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 580                                                         {
 581                                                                 c[0] = 0;
 582                                                                 c[1] = 0;
 583                                                                 c[2] = 0;
 584                                                                 if (surface->styles[0] != 255)
 585                                                                 {
 586                                                                         if (surface->mesh.data_lightmapcolor4f)
 587                                                                         {
 588                                                                                 float scale = d_lightstylevalue[surface->styles[0]] * (1.0f / 128.0f);
 589                                                                                 VectorMA(c, scale, surface->mesh.data_lightmapcolor4f + i*4, c);
 590                                                                         }
 591                                                                         else if (surface->mesh.data_lightmapoffsets)
 592                                                                         {
 593                                                                                 const qbyte *lm = surface->samples + surface->mesh.data_lightmapoffsets[i];
 594                                                                                 float scale = d_lightstylevalue[surface->styles[0]] * (1.0f / 32768.0f);
 595                                                                                 VectorMA(c, scale, lm, c);
 596                                                                                 if (surface->styles[1] != 255)
 597                                                                                 {
 598                                                                                         int size3 = ((surface->extents[0]>>4)+1)*((surface->extents[1]>>4)+1)*3;
 599                                                                                         lm += size3;
 600                                                                                         scale = d_lightstylevalue[surface->styles[1]] * (1.0f / 32768.0f);
 601                                                                                         VectorMA(c, scale, lm, c);
 602                                                                                         if (surface->styles[2] != 255)
 603                                                                                         {
 604                                                                                                 lm += size3;
 605                                                                                                 scale = d_lightstylevalue[surface->styles[2]] * (1.0f / 32768.0f);
 606                                                                                                 VectorMA(c, scale, lm, c);
 607                                                                                                 if (surface->styles[3] != 255)
 608                                                                                                 {
 609                                                                                                         lm += size3;
 610                                                                                                         scale = d_lightstylevalue[surface->styles[3]] * (1.0f / 32768.0f);
 611                                                                                                         VectorMA(c, scale, lm, c);
 612                                                                                                 }
 613                                                                                         }
 614                                                                                 }
 615                                                                         }
 616                                                                 }
 617                                                                 c[0] *= r;
 618                                                                 c[1] *= g;
 619                                                                 c[2] *= b;
 620                                                                 if (fogallpasses)
 621                                                                 {
 622                                                                         VectorSubtract(v, modelorg, diff);
 623                                                                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 624                                                                         VectorScale(c, f, c);
 625                                                                 }
 626                                                                 if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
 627                                                                         c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
 628                                                                 else
 629                                                                         c[3] = a;
 630                                                         }
 631                                                 }
 632                                                 else
 633                                                 {
 634                                                         if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
 635                                                         {
 636                                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 637                                                                 {
 638                                                                         c[0] = 0;
 639                                                                         c[1] = 0;
 640                                                                         c[2] = 0;
 641                                                                         c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
 642                                                                 }
 643                                                         }
 644                                                         else
 645                                                         {
 646                                                                 R_Mesh_ColorPointer(NULL);
 647                                                                 GL_Color(0, 0, 0, a);
 648                                                         }
 649                                                 }
 650                                         }
 651                                         R_Mesh_State(&m);
 652                                         GL_LockArrays(0, surface->mesh.num_vertices);
 653                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 654                                         GL_LockArrays(0, 0);
 655                                 }
 656                         }
 657                         if (dobase)
 658                         {
 659                                 dobase = false;
 660                                 memset(&m, 0, sizeof(m));
 661                                 m.tex[0] = R_GetTexture(texture->skin.base);
 662                                 if (waterscrolling)
 663                                         m.texmatrix[0] = r_surf_waterscrollmatrix;
 664                                 m.texmatrix[0] = r_surf_waterscrollmatrix;
 665                                 m.pointer_color = varray_color4f;
 666                                 colorscale = 1;
 667                                 if (gl_combine.integer)
 668                                 {
 669                                         m.texrgbscale[0] = 4;
 670                                         colorscale *= 0.25f;
 671                                 }
 672                                 R_Mesh_State(&m);
 673                                 r = ent->colormod[0] * colorscale;
 674                                 g = ent->colormod[1] * colorscale;
 675                                 b = ent->colormod[2] * colorscale;
 676                                 a = texture->currentalpha;
 677                                 if (dolightmap)
 678                                 {
 679                                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 680                                         {
 681                                                 surface = texturesurfacelist[texturesurfaceindex];
 682                                                 vertex3f = RSurf_GetVertexPointer(ent, surface);
 683                                                 R_Mesh_VertexPointer(vertex3f);
 684                                                 R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
 685                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 686                                                 {
 687                                                         c[0] = 0;
 688                                                         c[1] = 0;
 689                                                         c[2] = 0;
 690                                                         if (surface->styles[0] != 255)
 691                                                         {
 692                                                                 if (surface->mesh.data_lightmapcolor4f)
 693                                                                 {
 694                                                                         float scale = d_lightstylevalue[surface->styles[0]] * (1.0f / 128.0f);
 695                                                                         VectorMA(c, scale, surface->mesh.data_lightmapcolor4f + i*4, c);
 696                                                                 }
 697                                                                 else if (surface->mesh.data_lightmapoffsets)
 698                                                                 {
 699                                                                         const qbyte *lm = surface->samples + surface->mesh.data_lightmapoffsets[i];
 700                                                                         float scale = d_lightstylevalue[surface->styles[0]] * (1.0f / 32768.0f);
 701                                                                         VectorMA(c, scale, lm, c);
 702                                                                         if (surface->styles[1] != 255)
 703                                                                         {
 704                                                                                 int size3 = ((surface->extents[0]>>4)+1)*((surface->extents[1]>>4)+1)*3;
 705                                                                                 lm += size3;
 706                                                                                 scale = d_lightstylevalue[surface->styles[1]] * (1.0f / 32768.0f);
 707                                                                                 VectorMA(c, scale, lm, c);
 708                                                                                 if (surface->styles[2] != 255)
 709                                                                                 {
 710                                                                                         lm += size3;
 711                                                                                         scale = d_lightstylevalue[surface->styles[2]] * (1.0f / 32768.0f);
 712                                                                                         VectorMA(c, scale, lm, c);
 713                                                                                         if (surface->styles[3] != 255)
 714                                                                                         {
 715                                                                                                 lm += size3;
 716                                                                                                 scale = d_lightstylevalue[surface->styles[3]] * (1.0f / 32768.0f);
 717                                                                                                 VectorMA(c, scale, lm, c);
 718                                                                                         }
 719                                                                                 }
 720                                                                         }
 721                                                                 }
 722                                                         }
 723                                                         c[0] *= r;
 724                                                         c[1] *= g;
 725                                                         c[2] *= b;
 726                                                         if (fogallpasses)
 727                                                         {
 728                                                                 VectorSubtract(v, modelorg, diff);
 729                                                                 f = 1 - exp(fogdensity/DotProduct(diff, diff));
 730                                                                 VectorScale(c, f, c);
 731                                                         }
 732                                                         if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
 733                                                                 c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
 734                                                         else
 735                                                                 c[3] = a;
 736                                                 }
 737                                                 GL_LockArrays(0, surface->mesh.num_vertices);
 738                                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 739                                                 GL_LockArrays(0, 0);
 740                                         }
 741                                 }
 742                                 else
 743                                 {
 744                                         if (fogallpasses)
 745                                         {
 746                                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 747                                                 {
 748                                                         surface = texturesurfacelist[texturesurfaceindex];
 749                                                         vertex3f = RSurf_GetVertexPointer(ent, surface);
 750                                                         R_Mesh_VertexPointer(vertex3f);
 751                                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
 752                                                         if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
 753                                                         {
 754                                                                 R_Mesh_ColorPointer(varray_color4f);
 755                                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 756                                                                 {
 757                                                                         VectorSubtract(v, modelorg, diff);
 758                                                                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 759                                                                         c[0] = r * f;
 760                                                                         c[1] = g * f;
 761                                                                         c[2] = b * f;
 762                                                                         c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
 763                                                                 }
 764                                                         }
 765                                                         else
 766                                                         {
 767                                                                 R_Mesh_ColorPointer(varray_color4f);
 768                                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 769                                                                 {
 770                                                                         VectorSubtract(v, modelorg, diff);
 771                                                                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
 772                                                                         c[0] = r * f;
 773                                                                         c[1] = g * f;
 774                                                                         c[2] = b * f;
 775                                                                         c[3] = a;
 776                                                                 }
 777                                                         }
 778                                                         R_Mesh_State(&m);
 779                                                         GL_LockArrays(0, surface->mesh.num_vertices);
 780                                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 781                                                         GL_LockArrays(0, 0);
 782                                                 }
 783                                         }
 784                                         else
 785                                         {
 786                                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 787                                                 {
 788                                                         surface = texturesurfacelist[texturesurfaceindex];
 789                                                         vertex3f = RSurf_GetVertexPointer(ent, surface);
 790                                                         R_Mesh_VertexPointer(vertex3f);
 791                                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
 792                                                         if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
 793                                                         {
 794                                                                 R_Mesh_ColorPointer(varray_color4f);
 795                                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 796                                                                 {
 797                                                                         c[0] = r;
 798                                                                         c[1] = g;
 799                                                                         c[2] = b;
 800                                                                         c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
 801                                                                 }
 802                                                         }
 803                                                         else
 804                                                         {
 805                                                                 R_Mesh_ColorPointer(NULL);
 806                                                                 GL_Color(r, g, b, a);
 807                                                         }
 808                                                         R_Mesh_State(&m);
 809                                                         GL_LockArrays(0, surface->mesh.num_vertices);
 810                                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 811                                                         GL_LockArrays(0, 0);
 812                                                 }
 813                                         }
 814                                 }
 815                         }
 816                 }
 817                 else
 818                 {
 819                         if (!dolightmap && dobase)
 820                         {
 821                                 dolightmap = false;
 822                                 dobase = false;
 823                                 GL_Color(ent->colormod[0], ent->colormod[1], ent->colormod[2], 1);
 824                                 memset(&m, 0, sizeof(m));
 825                                 m.tex[0] = R_GetTexture(texture->skin.base);
 826                                 if (waterscrolling)
 827                                         m.texmatrix[0] = r_surf_waterscrollmatrix;
 828                                 R_Mesh_State(&m);
 829                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 830                                 {
 831                                         surface = texturesurfacelist[texturesurfaceindex];
 832                                         R_Mesh_VertexPointer(RSurf_GetVertexPointer(ent, surface));
 833                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
 834                                         GL_LockArrays(0, surface->mesh.num_vertices);
 835                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 836                                         GL_LockArrays(0, 0);
 837                                 }
 838                         }
 839                         if (r_lightmapintensity <= 0 && dolightmap && dobase)
 840                         {
 841                                 dolightmap = false;
 842                                 dobase = false;
 843                                 GL_Color(0, 0, 0, 1);
 844                                 memset(&m, 0, sizeof(m));
 845                                 R_Mesh_State(&m);
 846                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 847                                 {
 848                                         surface = texturesurfacelist[texturesurfaceindex];
 849                                         R_Mesh_VertexPointer(RSurf_GetVertexPointer(ent, surface));
 850                                         GL_LockArrays(0, surface->mesh.num_vertices);
 851                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 852                                         GL_LockArrays(0, 0);
 853                                 }
 854                         }
 855                         if (r_textureunits.integer >= 2 && gl_combine.integer && dolightmap && dobase)
 856                         {
 857                                 // dualtexture combine
 858                                 GL_BlendFunc(GL_ONE, GL_ZERO);
 859                                 GL_DepthMask(true);
 860                                 dolightmap = false;
 861                                 dobase = false;
 862                                 memset(&m, 0, sizeof(m));
 863                                 m.tex[1] = R_GetTexture(texture->skin.base);
 864                                 if (waterscrolling)
 865                                         m.texmatrix[1] = r_surf_waterscrollmatrix;
 866                                 m.texrgbscale[1] = 2;
 867                                 R_Mesh_State(&m);
 868                                 r = ent->colormod[0] * r_lightmapintensity;
 869                                 g = ent->colormod[1] * r_lightmapintensity;
 870                                 b = ent->colormod[2] * r_lightmapintensity;
 871                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 872                                 {
 873                                         surface = texturesurfacelist[texturesurfaceindex];
 874                                         R_Mesh_VertexPointer(RSurf_GetVertexPointer(ent, surface));
 875                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordlightmap2f);
 876                                         R_Mesh_TexCoordPointer(1, 2, surface->mesh.data_texcoordtexture2f);
 877                                         if (surface->lightmaptexture)
 878                                         {
 879                                                 R_Mesh_TexBind(0, R_GetTexture(surface->lightmaptexture));
 880                                                 R_Mesh_ColorPointer(NULL);
 881                                                 GL_Color(r, g, b, 1);
 882                                         }
 883                                         else if (r == 1 && g == 1 && b == 1)
 884                                         {
 885                                                 R_Mesh_TexBind(0, R_GetTexture(r_texture_white));
 886                                                 R_Mesh_ColorPointer(surface->mesh.data_lightmapcolor4f);
 887                                         }
 888                                         else
 889                                         {
 890                                                 R_Mesh_TexBind(0, R_GetTexture(r_texture_white));
 891                                                 R_Mesh_ColorPointer(varray_color4f);
 892                                                 for (i = 0;i < surface->mesh.num_vertices;i++)
 893                                                 {
 894                                                         varray_color4f[i*4+0] = surface->mesh.data_lightmapcolor4f[i*4+0] * r;
 895                                                         varray_color4f[i*4+1] = surface->mesh.data_lightmapcolor4f[i*4+1] * g;
 896                                                         varray_color4f[i*4+2] = surface->mesh.data_lightmapcolor4f[i*4+2] * b;
 897                                                         varray_color4f[i*4+3] = surface->mesh.data_lightmapcolor4f[i*4+3];
 898                                                 }
 899                                         }
 900                                         GL_LockArrays(0, surface->mesh.num_vertices);
 901                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 902                                         GL_LockArrays(0, 0);
 903                                 }
 904                         }
 905                         // single texture
 906                         if (dolightmap)
 907                         {
 908                                 GL_BlendFunc(GL_ONE, GL_ZERO);
 909                                 GL_DepthMask(true);
 910                                 GL_Color(1, 1, 1, 1);
 911                                 memset(&m, 0, sizeof(m));
 912                                 R_Mesh_State(&m);
 913                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 914                                 {
 915                                         surface = texturesurfacelist[texturesurfaceindex];
 916                                         R_Mesh_VertexPointer(RSurf_GetVertexPointer(ent, surface));
 917                                         R_Mesh_TexBind(0, R_GetTexture(surface->lightmaptexture));
 918                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordlightmap2f);
 919                                         R_Mesh_ColorPointer(surface->lightmaptexture ? NULL : surface->mesh.data_lightmapcolor4f);
 920                                         GL_LockArrays(0, surface->mesh.num_vertices);
 921                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 922                                         GL_LockArrays(0, 0);
 923                                 }
 924                         }
 925                         if (dobase)
 926                         {
 927                                 GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
 928                                 GL_DepthMask(false);
 929                                 GL_Color(r_lightmapintensity * ent->colormod[0], r_lightmapintensity * ent->colormod[1], r_lightmapintensity * ent->colormod[2], 1);
 930                                 memset(&m, 0, sizeof(m));
 931                                 m.tex[0] = R_GetTexture(texture->skin.base);
 932                                 if (waterscrolling)
 933                                         m.texmatrix[0] = r_surf_waterscrollmatrix;
 934                                 R_Mesh_State(&m);
 935                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 936                                 {
 937                                         surface = texturesurfacelist[texturesurfaceindex];
 938                                         R_Mesh_VertexPointer(RSurf_GetVertexPointer(ent, surface));
 939                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
 940                                         GL_LockArrays(0, surface->mesh.num_vertices);
 941                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 942                                         GL_LockArrays(0, 0);
 943                                 }
 944                         }
 945                 }
 946                 if (doambient)
 947                 {
 948                         doambient = false;
 949                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 950                         GL_DepthMask(false);
 951                         memset(&m, 0, sizeof(m));
 952                         m.tex[0] = R_GetTexture(texture->skin.base);
 953                         if (waterscrolling)
 954                                 m.texmatrix[0] = r_surf_waterscrollmatrix;
 955                         m.pointer_color = varray_color4f;
 956                         colorscale = 1;
 957                         if (gl_combine.integer)
 958                         {
 959                                 m.texrgbscale[0] = 4;
 960                                 colorscale *= 0.25f;
 961                         }
 962                         R_Mesh_State(&m);
 963                         base = r_ambient.value * (1.0f / 64.0f);
 964                         r = ent->colormod[0] * colorscale * base;
 965                         g = ent->colormod[1] * colorscale * base;
 966                         b = ent->colormod[2] * colorscale * base;
 967                         a = texture->currentalpha;
 968                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 969                         {
 970                                 surface = texturesurfacelist[texturesurfaceindex];
 971                                 vertex3f = RSurf_GetVertexPointer(ent, surface);
 972                                 R_Mesh_VertexPointer(vertex3f);
 973                                 R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
 974                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
 975                                 {
 976                                         c[0] = r;
 977                                         c[1] = g;
 978                                         c[2] = b;
 979                                         if (fogallpasses)
 980                                         {
 981                                                 VectorSubtract(v, modelorg, diff);
 982                                                 f = 1 - exp(fogdensity/DotProduct(diff, diff));
 983                                                 VectorScale(c, f, c);
 984                                         }
 985                                         if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
 986                                                 c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
 987                                         else
 988                                                 c[3] = a;
 989                                 }
 990                                 GL_LockArrays(0, surface->mesh.num_vertices);
 991                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
 992                                 GL_LockArrays(0, 0);
 993                         }
 994                 }
 995                 if (dodetail)
 996                 {
 997                         GL_BlendFunc(GL_DST_COLOR, GL_SRC_COLOR);
 998                         GL_DepthMask(false);
 999                         GL_Color(1, 1, 1, 1);
1000                         memset(&m, 0, sizeof(m));
1001                         m.tex[0] = R_GetTexture(texture->skin.detail);
1002                         R_Mesh_State(&m);
1003                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1004                         {
1005                                 surface = texturesurfacelist[texturesurfaceindex];
1006                                 R_Mesh_VertexPointer(RSurf_GetVertexPointer(ent, surface));
1007                                 R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoorddetail2f);
1008                                 GL_LockArrays(0, surface->mesh.num_vertices);
1009                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1010                                 GL_LockArrays(0, 0);
1011                         }
1012                 }
1013                 if (doglow)
1014                 {
1015                         // if glow was not already done using multitexture, do it now.
1016                         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1017                         GL_DepthMask(false);
1018                         memset(&m, 0, sizeof(m));
1019                         m.tex[0] = R_GetTexture(texture->skin.glow);
1020                         if (waterscrolling)
1021                                 m.texmatrix[0] = r_surf_waterscrollmatrix;
1022                         m.pointer_color = varray_color4f;
1023                         R_Mesh_State(&m);
1024                         colorscale = 1;
1025                         r = ent->colormod[0] * colorscale;
1026                         g = ent->colormod[1] * colorscale;
1027                         b = ent->colormod[2] * colorscale;
1028                         a = texture->currentalpha;
1029                         if (fogallpasses)
1030                         {
1031                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1032                                 {
1033                                         surface = texturesurfacelist[texturesurfaceindex];
1034                                         vertex3f = RSurf_GetVertexPointer(ent, surface);
1035                                         R_Mesh_VertexPointer(vertex3f);
1036                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
1037                                         R_Mesh_ColorPointer(varray_color4f);
1038                                         if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
1039                                         {
1040                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
1041                                                 {
1042                                                         VectorSubtract(v, modelorg, diff);
1043                                                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
1044                                                         c[0] = f * r;
1045                                                         c[1] = f * g;
1046                                                         c[2] = f * b;
1047                                                         c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
1048                                                 }
1049                                         }
1050                                         else
1051                                         {
1052                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
1053                                                 {
1054                                                         VectorSubtract(v, modelorg, diff);
1055                                                         f = 1 - exp(fogdensity/DotProduct(diff, diff));
1056                                                         c[0] = f * r;
1057                                                         c[1] = f * g;
1058                                                         c[2] = f * b;
1059                                                         c[3] = a;
1060                                                 }
1061                                         }
1062                                         GL_LockArrays(0, surface->mesh.num_vertices);
1063                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1064                                         GL_LockArrays(0, 0);
1065                                 }
1066                         }
1067                         else
1068                         {
1069                                 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1070                                 {
1071                                         surface = texturesurfacelist[texturesurfaceindex];
1072                                         vertex3f = RSurf_GetVertexPointer(ent, surface);
1073                                         R_Mesh_VertexPointer(vertex3f);
1074                                         R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
1075                                         if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
1076                                         {
1077                                                 R_Mesh_ColorPointer(varray_color4f);
1078                                                 for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
1079                                                 {
1080                                                         c[0] = r;
1081                                                         c[1] = g;
1082                                                         c[2] = b;
1083                                                         c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * a;
1084                                                 }
1085                                         }
1086                                         else
1087                                         {
1088                                                 R_Mesh_ColorPointer(NULL);
1089                                                 GL_Color(r, g, b, a);
1090                                         }
1091                                         GL_LockArrays(0, surface->mesh.num_vertices);
1092                                         R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1093                                         GL_LockArrays(0, 0);
1094                                 }
1095                         }
1096                 }
1097                 if (dofogpass)
1098                 {
1099                         // if this is opaque use alpha blend which will darken the earlier
1100                         // passes cheaply.
1101                         //
1102                         // if this is an alpha blended material, all the earlier passes
1103                         // were darkened by fog already, so we only need to add the fog
1104                         // color ontop through the fog mask texture
1105                         //
1106                         // if this is an additive blended material, all the earlier passes
1107                         // were darkened by fog already, and we should not add fog color
1108                         // (because the background was not darkened, there is no fog color
1109                         // that was lost behind it).
1110                         if (!fogallpasses)
1111                                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1112                         else
1113                                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1114                         GL_DepthMask(false);
1115                         memset(&m, 0, sizeof(m));
1116                         m.tex[0] = R_GetTexture(texture->skin.fog);
1117                         if (waterscrolling)
1118                                 m.texmatrix[0] = r_surf_waterscrollmatrix;
1119                         R_Mesh_State(&m);
1120                         r = fogcolor[0];
1121                         g = fogcolor[1];
1122                         b = fogcolor[2];
1123                         a = texture->currentalpha;
1124                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1125                         {
1126                                 surface = texturesurfacelist[texturesurfaceindex];
1127                                 vertex3f = RSurf_GetVertexPointer(ent, surface);
1128                                 R_Mesh_VertexPointer(vertex3f);
1129                                 R_Mesh_TexCoordPointer(0, 2, surface->mesh.data_texcoordtexture2f);
1130                                 R_Mesh_ColorPointer(varray_color4f);
1131                                 //RSurf_FogPassColors_Vertex3f_Color4f(surface->mesh.data_vertex3f, varray_color4f, fogcolor[0], fogcolor[1], fogcolor[2], texture->currentalpha, 1, surface->mesh.num_vertices, modelorg);
1132                                 if (surface->mesh.data_lightmapcolor4f && (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT))
1133                                 {
1134                                         for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
1135                                         {
1136                                                 VectorSubtract(v, modelorg, diff);
1137                                                 f = exp(fogdensity/DotProduct(diff, diff));
1138                                                 c[0] = r;
1139                                                 c[1] = g;
1140                                                 c[2] = b;
1141                                                 c[3] = surface->mesh.data_lightmapcolor4f[i*4+3] * f * a;
1142                                         }
1143                                 }
1144                                 else
1145                                 {
1146                                         for (i = 0, v = vertex3f, c = varray_color4f;i < surface->mesh.num_vertices;i++, v += 3, c += 4)
1147                                         {
1148                                                 VectorSubtract(v, modelorg, diff);
1149                                                 f = exp(fogdensity/DotProduct(diff, diff));
1150                                                 c[0] = r;
1151                                                 c[1] = g;
1152                                                 c[2] = b;
1153                                                 c[3] = f * a;
1154                                         }
1155                                 }
1156                                 GL_LockArrays(0, surface->mesh.num_vertices);
1157                                 R_Mesh_Draw(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i);
1158                                 GL_LockArrays(0, 0);
1159                         }
1160                 }
1161         }
1162         if (texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1163                 qglEnable(GL_CULL_FACE);
1164 }
1165
1166 static void RSurfShader_Transparent_Callback(const void *calldata1, int calldata2)
1167 {
1168         const entity_render_t *ent = calldata1;
1169         const msurface_t *surface = ent->model->brush.data_surfaces + calldata2;
1170         vec3_t modelorg;
1171         texture_t *texture;
1172
1173         texture = surface->texture;
1174         if (texture->basematerialflags & MATERIALFLAG_SKY)
1175                 return; // transparent sky is too difficult
1176         R_UpdateTextureInfo(ent, texture);
1177
1178         R_Mesh_Matrix(&ent->matrix);
1179         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1180         R_DrawSurfaceList(ent, texture, 1, &surface, modelorg);
1181 }
1182
1183 void R_QueueSurfaceList(entity_render_t *ent, texture_t *texture, int texturenumsurfaces, const msurface_t **texturesurfacelist, const vec3_t modelorg)
1184 {
1185         int texturesurfaceindex;
1186         const msurface_t *surface;
1187         vec3_t tempcenter, center;
1188         if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
1189         {
1190                 // drawing sky transparently would be too difficult
1191                 if (!(texture->currentmaterialflags & MATERIALFLAG_SKY))
1192                 {
1193                         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
1194                         {
1195                                 surface = texturesurfacelist[texturesurfaceindex];
1196                                 tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1197                                 tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1198                                 tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1199                                 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
1200                                 R_MeshQueue_AddTransparent(ent->effects & EF_NODEPTHTEST ? r_vieworigin : center, RSurfShader_Transparent_Callback, ent, surface - ent->model->brush.data_surfaces);
1201                         }
1202                 }
1203         }
1204         else
1205                 R_DrawSurfaceList(ent, texture, texturenumsurfaces, texturesurfacelist, modelorg);
1206 }
1207
1208 void R_DrawSurfaces(entity_render_t *ent, qboolean skysurfaces)
1209 {
1210         int i, j, f, flagsmask;
1211         msurface_t *surface, **surfacechain;
1212         texture_t *t, *texture;
1213         model_t *model = ent->model;
1214         vec3_t modelorg;
1215         const int maxsurfacelist = 1024;
1216         int numsurfacelist = 0;
1217         const msurface_t *surfacelist[1024];
1218         if (model == NULL)
1219                 return;
1220         R_Mesh_Matrix(&ent->matrix);
1221         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
1222
1223         // update light styles
1224         if (!skysurfaces)
1225         {
1226                 for (i = 0;i < model->brushq1.light_styles;i++)
1227                 {
1228                         if (model->brushq1.light_stylevalue[i] != d_lightstylevalue[model->brushq1.light_style[i]])
1229                         {
1230                                 model->brushq1.light_stylevalue[i] = d_lightstylevalue[model->brushq1.light_style[i]];
1231                                 if ((surfacechain = model->brushq1.light_styleupdatechains[i]))
1232                                         for (;(surface = *surfacechain);surfacechain++)
1233                                                 surface->cached_dlight = true;
1234                         }
1235                 }
1236         }
1237
1238         R_UpdateAllTextureInfo(ent);
1239         flagsmask = skysurfaces ? MATERIALFLAG_SKY : (MATERIALFLAG_WATER | MATERIALFLAG_WALL);
1240         f = 0;
1241         t = NULL;
1242         texture = NULL;
1243         numsurfacelist = 0;
1244         for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
1245         {
1246                 if (ent != r_refdef.worldentity || r_worldsurfacevisible[j])
1247                 {
1248                         surface = model->brush.data_surfaces + j;
1249                         if (t != surface->texture)
1250                         {
1251                                 if (numsurfacelist)
1252                                 {
1253                                         R_QueueSurfaceList(ent, texture, numsurfacelist, surfacelist, modelorg);
1254                                         numsurfacelist = 0;
1255                                 }
1256                                 t = surface->texture;
1257                                 f = t->currentmaterialflags & flagsmask;
1258                                 texture = t->currentframe;
1259                         }
1260                         if (f && surface->mesh.num_triangles)
1261                         {
1262                                 // if lightmap parameters changed, rebuild lightmap texture
1263                                 if (surface->cached_dlight && surface->samples)
1264                                         R_BuildLightMap(ent, surface);
1265                                 // add face to draw list
1266                                 surfacelist[numsurfacelist++] = surface;
1267                                 if (numsurfacelist >= maxsurfacelist)
1268                                 {
1269                                         R_QueueSurfaceList(ent, texture, numsurfacelist, surfacelist, modelorg);
1270                                         numsurfacelist = 0;
1271                                 }
1272                         }
1273                 }
1274         }
1275         if (numsurfacelist)
1276                 R_QueueSurfaceList(ent, texture, numsurfacelist, surfacelist, modelorg);
1277 }
1278
1279 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1280 {
1281         int i;
1282         float *v;
1283         rmeshstate_t m;
1284         const mportal_t *portal = calldata1;
1285         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
1286         GL_DepthMask(false);
1287         GL_DepthTest(true);
1288         R_Mesh_Matrix(&r_identitymatrix);
1289
1290         memset(&m, 0, sizeof(m));
1291         m.pointer_vertex = varray_vertex3f;
1292         R_Mesh_State(&m);
1293
1294         i = calldata2;
1295         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
1296                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
1297                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
1298                          0.125f);
1299         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
1300         {
1301                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
1302                         VectorCopy(portal->points[i].position, v);
1303         }
1304         else
1305                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
1306                         VectorCopy(portal->points[i].position, v);
1307         GL_LockArrays(0, portal->numpoints);
1308         R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1309         GL_LockArrays(0, 0);
1310 }
1311
1312 // LordHavoc: this is just a nice debugging tool, very slow
1313 static void R_DrawPortals(void)
1314 {
1315         int i, portalnum;
1316         mportal_t *portal;
1317         float center[3], f;
1318         model_t *model = r_refdef.worldmodel;
1319         if (model == NULL)
1320                 return;
1321         for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
1322         {
1323                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1324                 if (!R_CullBox(portal->mins, portal->maxs))
1325                 {
1326                         VectorClear(center);
1327                         for (i = 0;i < portal->numpoints;i++)
1328                                 VectorAdd(center, portal->points[i].position, center);
1329                         f = ixtable[portal->numpoints];
1330                         VectorScale(center, f, center);
1331                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, portal, portalnum);
1332                 }
1333         }
1334 }
1335
1336 static void R_DrawCollisionBrush(colbrushf_t *brush)
1337 {
1338         int i;
1339         rmeshstate_t m;
1340         memset(&m, 0, sizeof(m));
1341         m.pointer_vertex = brush->points->v;
1342         R_Mesh_State(&m);
1343         i = (int)(((size_t)brush) / sizeof(colbrushf_t));
1344         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1345         GL_LockArrays(0, brush->numpoints);
1346         R_Mesh_Draw(brush->numpoints, brush->numtriangles, brush->elements);
1347         GL_LockArrays(0, 0);
1348 }
1349
1350 static void R_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
1351 {
1352         int i;
1353         rmeshstate_t m;
1354         if (!surface->mesh.num_collisiontriangles)
1355                 return;
1356         memset(&m, 0, sizeof(m));
1357         m.pointer_vertex = surface->mesh.data_collisionvertex3f;
1358         R_Mesh_State(&m);
1359         i = (int)(((size_t)surface) / sizeof(msurface_t));
1360         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
1361         GL_LockArrays(0, surface->mesh.num_collisionvertices);
1362         R_Mesh_Draw(surface->mesh.num_collisionvertices, surface->mesh.num_collisiontriangles, surface->mesh.data_collisionelement3i);
1363         GL_LockArrays(0, 0);
1364 }
1365
1366 void R_WorldVisibility(void)
1367 {
1368         int i, j, *mark;
1369         mleaf_t *leaf;
1370         mleaf_t *viewleaf;
1371         model_t *model = r_refdef.worldmodel;
1372
1373         if (!model)
1374                 return;
1375
1376         // if possible find the leaf the view origin is in
1377         viewleaf = model->brushq1.PointInLeaf ? model->brushq1.PointInLeaf(model, r_vieworigin) : NULL;
1378         // if possible fetch the visible cluster bits
1379         if (model->brush.FatPVS)
1380                 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
1381
1382         // clear the visible surface and leaf flags arrays
1383         memset(r_worldsurfacevisible, 0, model->brush.num_surfaces);
1384         memset(r_worldleafvisible, 0, model->brush.num_leafs);
1385
1386         // if the user prefers surfaceworldnode (testing?) or the viewleaf could
1387         // not be found, or the viewleaf is not part of the visible world
1388         // (floating around in the void), use the pvs method
1389         if (r_surfaceworldnode.integer || !viewleaf || viewleaf->clusterindex < 0)
1390         {
1391                 // pvs method:
1392                 // similar to quake's RecursiveWorldNode but without cache misses
1393                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
1394                 {
1395                         // if leaf is in current pvs and on the screen, mark its surfaces
1396                         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
1397                         {
1398                                 c_leafs++;
1399                                 r_worldleafvisible[j] = true;
1400                                 if (leaf->numleafsurfaces)
1401                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
1402                                                 r_worldsurfacevisible[*mark] = true;
1403                         }
1404                 }
1405         }
1406         else
1407         {
1408                 int leafstackpos;
1409                 mportal_t *p;
1410                 mleaf_t *leafstack[8192];
1411                 // portal method:
1412                 // follows portals leading outward from viewleaf, does not venture
1413                 // offscreen or into leafs that are not visible, faster than Quake's
1414                 // RecursiveWorldNode and vastly better in unvised maps, often culls a
1415                 // lot of surface that pvs alone would miss
1416                 leafstack[0] = viewleaf;
1417                 leafstackpos = 1;
1418                 while (leafstackpos)
1419                 {
1420                         c_leafs++;
1421                         leaf = leafstack[--leafstackpos];
1422                         r_worldleafvisible[leaf - model->brush.data_leafs] = true;
1423                         // mark any surfaces bounding this leaf
1424                         if (leaf->numleafsurfaces)
1425                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
1426                                         r_worldsurfacevisible[*mark] = true;
1427                         // follow portals into other leafs
1428                         // the checks are:
1429                         // if viewer is behind portal (portal faces outward into the scene)
1430                         // and the portal polygon's bounding box is on the screen
1431                         // and the leaf has not been visited yet
1432                         // and the leaf is visible in the pvs
1433                         // (the first two checks won't cause as many cache misses as the leaf checks)
1434                         for (p = leaf->portals;p;p = p->next)
1435                                 if (DotProduct(r_vieworigin, p->plane.normal) < (p->plane.dist + 1) && !R_CullBox(p->mins, p->maxs) && !r_worldleafvisible[p->past - model->brush.data_leafs] && CHECKPVSBIT(r_pvsbits, p->past->clusterindex))
1436                                         leafstack[leafstackpos++] = p->past;
1437                 }
1438         }
1439
1440         if (r_drawportals.integer)
1441                 R_DrawPortals();
1442 }
1443
1444 void R_Q1BSP_DrawSky(entity_render_t *ent)
1445 {
1446         if (ent->model == NULL)
1447                 return;
1448         if (r_drawcollisionbrushes.integer < 2)
1449                 R_DrawSurfaces(ent, true);
1450 }
1451
1452 void R_Q1BSP_Draw(entity_render_t *ent)
1453 {
1454         if (ent->model == NULL)
1455                 return;
1456         c_bmodels++;
1457         if (r_drawcollisionbrushes.integer < 2)
1458                 R_DrawSurfaces(ent, false);
1459         if (r_drawcollisionbrushes.integer >= 1 && ent->model->brush.num_brushes)
1460         {
1461                 int i;
1462                 model_t *model = ent->model;
1463                 msurface_t *surface;
1464                 q3mbrush_t *brush;
1465                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
1466                 GL_DepthMask(false);
1467                 GL_DepthTest(true);
1468                 qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
1469                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
1470                         if (brush->colbrushf && brush->colbrushf->numtriangles)
1471                                 R_DrawCollisionBrush(brush->colbrushf);
1472                 for (i = 0, surface = model->brush.data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
1473                         if (surface->mesh.num_collisiontriangles)
1474                                 R_DrawCollisionSurface(ent, surface);
1475                 qglPolygonOffset(0, 0);
1476         }
1477 }
1478
1479 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outclusterlist, qbyte *outclusterpvs, int *outnumclusterspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer)
1480 {
1481         model_t *model = ent->model;
1482         vec3_t lightmins, lightmaxs;
1483         int t, leafindex, leafsurfaceindex, surfaceindex, triangleindex, outnumclusters = 0, outnumsurfaces = 0;
1484         const int *e;
1485         const float *v[3];
1486         msurface_t *surface;
1487         mleaf_t *leaf;
1488         const qbyte *pvs;
1489         lightmins[0] = relativelightorigin[0] - lightradius;
1490         lightmins[1] = relativelightorigin[1] - lightradius;
1491         lightmins[2] = relativelightorigin[2] - lightradius;
1492         lightmaxs[0] = relativelightorigin[0] + lightradius;
1493         lightmaxs[1] = relativelightorigin[1] + lightradius;
1494         lightmaxs[2] = relativelightorigin[2] + lightradius;
1495         *outnumclusterspointer = 0;
1496         *outnumsurfacespointer = 0;
1497         memset(outclusterpvs, 0, model->brush.num_pvsclusterbytes);
1498         memset(outsurfacepvs, 0, (model->nummodelsurfaces + 7) >> 3);
1499         if (model == NULL)
1500         {
1501                 VectorCopy(lightmins, outmins);
1502                 VectorCopy(lightmaxs, outmaxs);
1503                 return;
1504         }
1505         VectorCopy(relativelightorigin, outmins);
1506         VectorCopy(relativelightorigin, outmaxs);
1507         if (model->brush.GetPVS)
1508                 pvs = model->brush.GetPVS(model, relativelightorigin);
1509         else
1510                 pvs = NULL;
1511         R_UpdateAllTextureInfo(ent);
1512         // FIXME: use BSP recursion as lights are often small
1513         for (leafindex = 0, leaf = model->brush.data_leafs;leafindex < model->brush.num_leafs;leafindex++, leaf++)
1514         {
1515                 if (BoxesOverlap(lightmins, lightmaxs, leaf->mins, leaf->maxs) && (pvs == NULL || CHECKPVSBIT(pvs, leaf->clusterindex)))
1516                 {
1517                         outmins[0] = min(outmins[0], leaf->mins[0]);
1518                         outmins[1] = min(outmins[1], leaf->mins[1]);
1519                         outmins[2] = min(outmins[2], leaf->mins[2]);
1520                         outmaxs[0] = max(outmaxs[0], leaf->maxs[0]);
1521                         outmaxs[1] = max(outmaxs[1], leaf->maxs[1]);
1522                         outmaxs[2] = max(outmaxs[2], leaf->maxs[2]);
1523                         if (outclusterpvs)
1524                         {
1525                                 if (!CHECKPVSBIT(outclusterpvs, leaf->clusterindex))
1526                                 {
1527                                         SETPVSBIT(outclusterpvs, leaf->clusterindex);
1528                                         outclusterlist[outnumclusters++] = leaf->clusterindex;
1529                                 }
1530                         }
1531                         if (outsurfacepvs)
1532                         {
1533                                 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
1534                                 {
1535                                         surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
1536                                         if (!CHECKPVSBIT(outsurfacepvs, surfaceindex))
1537                                         {
1538                                                 surface = model->brush.data_surfaces + surfaceindex;
1539                                                 if (BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1540                                                 if ((surface->texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT)) == MATERIALFLAG_WALL)
1541                                                 {
1542                                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->mesh.num_triangles;triangleindex++, t++, e += 3)
1543                                                         {
1544                                                                 v[0] = model->brush.shadowmesh->vertex3f + e[0] * 3;
1545                                                                 v[1] = model->brush.shadowmesh->vertex3f + e[1] * 3;
1546                                                                 v[2] = model->brush.shadowmesh->vertex3f + e[2] * 3;
1547                                                                 if (lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
1548                                                                 {
1549                                                                         SETPVSBIT(outsurfacepvs, surfaceindex);
1550                                                                         outsurfacelist[outnumsurfaces++] = surfaceindex;
1551                                                                         break;
1552                                                                 }
1553                                                         }
1554                                                 }
1555                                         }
1556                                 }
1557                         }
1558                 }
1559         }
1560
1561         // limit combined leaf box to light boundaries
1562         outmins[0] = max(outmins[0], lightmins[0]);
1563         outmins[1] = max(outmins[1], lightmins[1]);
1564         outmins[2] = max(outmins[2], lightmins[2]);
1565         outmaxs[0] = min(outmaxs[0], lightmaxs[0]);
1566         outmaxs[1] = min(outmaxs[1], lightmaxs[1]);
1567         outmaxs[2] = min(outmaxs[2], lightmaxs[2]);
1568
1569         *outnumclusterspointer = outnumclusters;
1570         *outnumsurfacespointer = outnumsurfaces;
1571 }
1572
1573 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
1574 {
1575         model_t *model = ent->model;
1576         msurface_t *surface;
1577         int surfacelistindex;
1578         if (r_drawcollisionbrushes.integer < 2)
1579         {
1580                 R_Mesh_Matrix(&ent->matrix);
1581                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1582                 if (!r_shadow_compilingrtlight)
1583                         R_UpdateAllTextureInfo(ent);
1584                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1585                 {
1586                         surface = model->brush.data_surfaces + surfacelist[surfacelistindex];
1587                         if ((surface->texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
1588                                 continue;
1589                         if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1590                                 continue;
1591                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->mesh.num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
1592                 }
1593                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + r_shadow_projectdistance.value, numshadowmark, shadowmarklist);
1594         }
1595 }
1596
1597 void R_Q1BSP_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float *lightcolor, const matrix4x4_t *matrix_modeltolight, const matrix4x4_t *matrix_modeltoattenuationxyz, const matrix4x4_t *matrix_modeltoattenuationz, rtexture_t *lightcubemap, vec_t ambientscale, vec_t diffusescale, vec_t specularscale, int numsurfaces, const int *surfacelist)
1598 {
1599         model_t *model = ent->model;
1600         msurface_t *surface;
1601         texture_t *t;
1602         int surfacelistindex;
1603         if (r_drawcollisionbrushes.integer < 2)
1604         {
1605                 R_Mesh_Matrix(&ent->matrix);
1606                 if (!r_shadow_compilingrtlight)
1607                         R_UpdateAllTextureInfo(ent);
1608                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1609                 {
1610                         surface = model->brush.data_surfaces + surfacelist[surfacelistindex];
1611                         if (surface->texture->basematerialflags & MATERIALFLAG_NODRAW || !surface->mesh.num_triangles)
1612                                 continue;
1613                         if (r_shadow_compilingrtlight)
1614                         {
1615                                 // if compiling an rtlight, capture the mesh
1616                                 t = surface->texture;
1617                                 if ((t->basematerialflags & (MATERIALFLAG_WALL | MATERIALFLAG_TRANSPARENT)) == MATERIALFLAG_WALL)
1618                                         Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texture->skin.base, surface->texture->skin.gloss, surface->texture->skin.nmap, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, surface->mesh.num_triangles, surface->mesh.data_element3i);
1619                         }
1620                         else if (ent != r_refdef.worldentity || r_worldsurfacevisible[surfacelist[surfacelistindex]])
1621                         {
1622                                 t = surface->texture->currentframe;
1623                                 // FIXME: transparent surfaces need to be lit later
1624                                 if ((t->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_TRANSPARENT)) == MATERIALFLAG_WALL)
1625                                 {
1626                                         if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1627                                                 qglDisable(GL_CULL_FACE);
1628                                         R_Shadow_RenderLighting(surface->mesh.num_vertices, surface->mesh.num_triangles, surface->mesh.data_element3i, surface->mesh.data_vertex3f, surface->mesh.data_svector3f, surface->mesh.data_tvector3f, surface->mesh.data_normal3f, surface->mesh.data_texcoordtexture2f, relativelightorigin, relativeeyeorigin, lightcolor, matrix_modeltolight, matrix_modeltoattenuationxyz, matrix_modeltoattenuationz, t->skin.base, t->skin.nmap, t->skin.gloss, lightcubemap, ambientscale, diffusescale, specularscale);
1629                                         if (surface->texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
1630                                                 qglEnable(GL_CULL_FACE);
1631                                 }
1632                         }
1633                 }
1634         }
1635 }
1636
1637 #if 0
1638 static void gl_surf_start(void)
1639 {
1640 }
1641
1642 static void gl_surf_shutdown(void)
1643 {
1644 }
1645
1646 static void gl_surf_newmap(void)
1647 {
1648 }
1649 #endif
1650
1651 void GL_Surf_Init(void)
1652 {
1653
1654         Cvar_RegisterVariable(&r_ambient);
1655         Cvar_RegisterVariable(&r_drawportals);
1656         Cvar_RegisterVariable(&r_testvis);
1657         Cvar_RegisterVariable(&r_detailtextures);
1658         Cvar_RegisterVariable(&r_surfaceworldnode);
1659         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
1660         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
1661         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1662         Cvar_RegisterVariable(&gl_lightmaps);
1663
1664         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1665 }
1666