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 #include "portals.h"
  25
  26 #define MAX_LIGHTMAP_SIZE 256
  27
  28 cvar_t r_ambient = {0, "r_ambient", "0", "brighter world cheat (not allowed in multiplayer), value is 0-128"};
  29 cvar_t r_drawportals = {0, "r_drawportals", "0", "shows portals (separating polygons) in world interior in quake1 maps"};
  30 cvar_t r_lockpvs = {0, "r_lockpvs", "0", "disables pvs switching, allows you to walk around and inspect what is visible from a given location in the map (anything not visible from your current location will not be drawn)"};
  31 cvar_t r_lockvisibility = {0, "r_lockvisibility", "0", "disables visibility updates, allows you to walk around and inspect what is visible from a given viewpoint in the map (anything offscreen at the moment this is enabled will not be drawn)"};
  32 cvar_t r_useportalculling = {0, "r_useportalculling", "1", "use advanced portal culling visibility method to improve performance over just Potentially Visible Set, provides an even more significant speed improvement in unvised maps"};
  33 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"};
  34
  35 /*
  36 ===============
  37 R_BuildLightMap
  38
  39 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  40 ===============
  41 */
  42 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  43 {
  44         int smax, tmax, i, size, size3, maps, l;
  45         int *bl, scale;
  46         unsigned char *lightmap, *out, *stain;
  47         model_t *model = ent->model;
  48         static int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  49         static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  50
  51         // update cached lighting info
  52         surface->cached_dlight = 0;
  53
  54         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  55         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  56         size = smax*tmax;
  57         size3 = size*3;
  58         lightmap = surface->lightmapinfo->samples;
  59
  60 // set to full bright if no light data
  61         bl = intblocklights;
  62         if (!model->brushq1.lightdata)
  63         {
  64                 for (i = 0;i < size3;i++)
  65                         bl[i] = 255*256;
  66         }
  67         else
  68         {
  69 // clear to no light
  70                 memset(bl, 0, size3*sizeof(*bl));
  71
  72 // add all the lightmaps
  73                 if (lightmap)
  74                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  75                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  76                                         bl[i] += lightmap[i] * scale;
  77         }
  78
  79         stain = surface->lightmapinfo->stainsamples;
  80         bl = intblocklights;
  81         out = templight;
  82         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  83         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  84         // be doubled during rendering to achieve 2x overbright
  85         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  86         if (model->brushq1.lightmaprgba)
  87         {
  88                 for (i = 0;i < size;i++)
  89                 {
  90                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
  91                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
  92                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
  93                         *out++ = 255;
  94                 }
  95         }
  96         else
  97         {
  98                 for (i = 0;i < size;i++)
  99                 {
 100                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 101                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 102                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 103                 }
 104         }
 105
 106         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 107
 108         // update the surface's deluxemap if it has one
 109         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 110         {
 111                 vec3_t n;
 112                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 113                 lightmap = surface->lightmapinfo->samples;
 114                 // clear to no normalmap
 115                 bl = intblocklights;
 116                 memset(bl, 0, size3*sizeof(*bl));
 117                 // add all the normalmaps
 118                 if (lightmap && normalmap)
 119                 {
 120                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 121                         {
 122                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 123                                 {
 124                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 125                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 126                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 127                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 128                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 129                                 }
 130                         }
 131                 }
 132                 bl = intblocklights;
 133                 out = templight;
 134                 // we simply renormalize the weighted normals to get a valid deluxemap
 135                 if (model->brushq1.lightmaprgba)
 136                 {
 137                         for (i = 0;i < size;i++, bl += 3)
 138                         {
 139                                 VectorCopy(bl, n);
 140                                 VectorNormalize(n);
 141                                 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
 142                                 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
 143                                 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
 144                                 *out++ = 255;
 145                         }
 146                 }
 147                 else
 148                 {
 149                         for (i = 0;i < size;i++, bl += 3)
 150                         {
 151                                 VectorCopy(bl, n);
 152                                 VectorNormalize(n);
 153                                 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
 154                                 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
 155                                 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
 156                         }
 157                 }
 158                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 159         }
 160 }
 161
 162 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 163 {
 164         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 165         msurface_t *surface, *endsurface;
 166         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 167         unsigned char *bl;
 168         vec3_t impact;
 169
 170         maxdist = radius * radius;
 171         invradius = 1.0f / radius;
 172
 173 loc0:
 174         if (!node->plane)
 175                 return;
 176         ndist = PlaneDiff(origin, node->plane);
 177         if (ndist > radius)
 178         {
 179                 node = node->children[0];
 180                 goto loc0;
 181         }
 182         if (ndist < -radius)
 183         {
 184                 node = node->children[1];
 185                 goto loc0;
 186         }
 187
 188         dist2 = ndist * ndist;
 189         maxdist3 = maxdist - dist2;
 190
 191         if (node->plane->type < 3)
 192         {
 193                 VectorCopy(origin, impact);
 194                 impact[node->plane->type] -= ndist;
 195         }
 196         else
 197         {
 198                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 199                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 200                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 201         }
 202
 203         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 204         {
 205                 if (surface->lightmapinfo->stainsamples)
 206                 {
 207                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 208                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 209
 210                         impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
 211                         impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 212
 213                         s = bound(0, impacts, smax * 16) - impacts;
 214                         t = bound(0, impactt, tmax * 16) - impactt;
 215                         i = (int)(s * s + t * t + dist2);
 216                         if (i > maxdist)
 217                                 continue;
 218
 219                         // reduce calculations
 220                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 221                                 sdtable[s] = i * i + dist2;
 222
 223                         bl = surface->lightmapinfo->stainsamples;
 224                         smax3 = smax * 3;
 225                         stained = false;
 226
 227                         i = impactt;
 228                         for (t = 0;t < tmax;t++, i -= 16)
 229                         {
 230                                 td = i * i;
 231                                 // make sure some part of it is visible on this line
 232                                 if (td < maxdist3)
 233                                 {
 234                                         maxdist2 = maxdist - td;
 235                                         for (s = 0;s < smax;s++)
 236                                         {
 237                                                 if (sdtable[s] < maxdist2)
 238                                                 {
 239                                                         ratio = lhrandom(0.0f, 1.0f);
 240                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 241                                                         if (a >= (1.0f / 64.0f))
 242                                                         {
 243                                                                 if (a > 1)
 244                                                                         a = 1;
 245                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 246                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 247                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 248                                                                 stained = true;
 249                                                         }
 250                                                 }
 251                                                 bl += 3;
 252                                         }
 253                                 }
 254                                 else // skip line
 255                                         bl += smax3;
 256                         }
 257                         // force lightmap upload
 258                         if (stained)
 259                                 surface->cached_dlight = true;
 260                 }
 261         }
 262
 263         if (node->children[0]->plane)
 264         {
 265                 if (node->children[1]->plane)
 266                 {
 267                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 268                         node = node->children[1];
 269                         goto loc0;
 270                 }
 271                 else
 272                 {
 273                         node = node->children[0];
 274                         goto loc0;
 275                 }
 276         }
 277         else if (node->children[1]->plane)
 278         {
 279                 node = node->children[1];
 280                 goto loc0;
 281         }
 282 }
 283
 284 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)
 285 {
 286         int n;
 287         float fcolor[8];
 288         entity_render_t *ent;
 289         model_t *model;
 290         vec3_t org;
 291         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 292                 return;
 293         fcolor[0] = cr1;
 294         fcolor[1] = cg1;
 295         fcolor[2] = cb1;
 296         fcolor[3] = ca1 * (1.0f / 64.0f);
 297         fcolor[4] = cr2 - cr1;
 298         fcolor[5] = cg2 - cg1;
 299         fcolor[6] = cb2 - cb1;
 300         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 301
 302         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 303
 304         // look for embedded bmodels
 305         for (n = 0;n < cl.num_brushmodel_entities;n++)
 306         {
 307                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 308                 model = ent->model;
 309                 if (model && model->name[0] == '*')
 310                 {
 311                         if (model->brush.data_nodes)
 312                         {
 313                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 314                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 315                         }
 316                 }
 317         }
 318 }
 319
 320
 321 /*
 322 =============================================================
 323
 324         BRUSH MODELS
 325
 326 =============================================================
 327 */
 328
 329 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 330 {
 331         // due to the hacky nature of this function's parameters, this is never
 332         // called with a batch, so numsurfaces is always 1, and the surfacelist
 333         // contains only a leaf number for coloring purposes
 334         const mportal_t *portal = (mportal_t *)ent;
 335         int i, numpoints;
 336         float *v;
 337         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 338         CHECKGLERROR
 339         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 340         GL_DepthMask(false);
 341         GL_DepthTest(true);
 342         qglDisable(GL_CULL_FACE);CHECKGLERROR
 343         R_Mesh_Matrix(&identitymatrix);
 344
 345         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 346
 347         R_Mesh_VertexPointer(vertex3f);
 348         R_Mesh_ColorPointer(NULL);
 349         R_Mesh_ResetTextureState();
 350
 351         i = surfacelist[0];
 352         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
 353                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
 354                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
 355                          0.125f);
 356         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 357                 VectorCopy(portal->points[i].position, v);
 358         R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements);
 359         qglEnable(GL_CULL_FACE);CHECKGLERROR
 360 }
 361
 362 // LordHavoc: this is just a nice debugging tool, very slow
 363 static void R_DrawPortals(void)
 364 {
 365         int i, leafnum;
 366         mportal_t *portal;
 367         float center[3], f;
 368         model_t *model = r_refdef.worldmodel;
 369         if (model == NULL)
 370                 return;
 371         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 372         {
 373                 if (r_viewcache.world_leafvisible[leafnum])
 374                 {
 375                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 376                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 377                         {
 378                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 379                                 if (!R_CullBox(portal->mins, portal->maxs))
 380                                 {
 381                                         VectorClear(center);
 382                                         for (i = 0;i < portal->numpoints;i++)
 383                                                 VectorAdd(center, portal->points[i].position, center);
 384                                         f = ixtable[portal->numpoints];
 385                                         VectorScale(center, f, center);
 386                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
 387                                 }
 388                         }
 389                 }
 390         }
 391 }
 392
 393 void R_View_WorldVisibility(void)
 394 {
 395         int i, j, *mark;
 396         mleaf_t *leaf;
 397         mleaf_t *viewleaf;
 398         model_t *model = r_refdef.worldmodel;
 399
 400         if (!model)
 401                 return;
 402
 403         // if possible find the leaf the view origin is in
 404         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_view.origin) : NULL;
 405         // if possible fetch the visible cluster bits
 406         if (!r_lockpvs.integer && model->brush.FatPVS)
 407                 model->brush.FatPVS(model, r_view.origin, 2, r_viewcache.world_pvsbits, sizeof(r_viewcache.world_pvsbits));
 408
 409         if (!r_lockvisibility.integer)
 410         {
 411                 // clear the visible surface and leaf flags arrays
 412                 memset(r_viewcache.world_surfacevisible, 0, model->num_surfaces);
 413                 memset(r_viewcache.world_leafvisible, 0, model->brush.num_leafs);
 414
 415                 r_viewcache.world_novis = false;
 416
 417                 // if floating around in the void (no pvs data available, and no
 418                 // portals available), simply use all on-screen leafs.
 419                 if (!viewleaf || viewleaf->clusterindex < 0)
 420                 {
 421                         // no visibility method: (used when floating around in the void)
 422                         // simply cull each leaf to the frustum (view pyramid)
 423                         // similar to quake's RecursiveWorldNode but without cache misses
 424                         r_viewcache.world_novis = true;
 425                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 426                         {
 427                                 // if leaf is in current pvs and on the screen, mark its surfaces
 428                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 429                                 {
 430                                         r_refdef.stats.world_leafs++;
 431                                         r_viewcache.world_leafvisible[j] = true;
 432                                         if (leaf->numleafsurfaces)
 433                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 434                                                         r_viewcache.world_surfacevisible[*mark] = true;
 435                                 }
 436                         }
 437                 }
 438                 // if the user prefers to disable portal culling (testing?), simply
 439                 // use all on-screen leafs that are in the pvs.
 440                 else if (!r_useportalculling.integer)
 441                 {
 442                         // pvs method:
 443                         // simply check if each leaf is in the Potentially Visible Set,
 444                         // and cull to frustum (view pyramid)
 445                         // similar to quake's RecursiveWorldNode but without cache misses
 446                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 447                         {
 448                                 // if leaf is in current pvs and on the screen, mark its surfaces
 449                                 if (CHECKPVSBIT(r_viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 450                                 {
 451                                         r_refdef.stats.world_leafs++;
 452                                         r_viewcache.world_leafvisible[j] = true;
 453                                         if (leaf->numleafsurfaces)
 454                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 455                                                         r_viewcache.world_surfacevisible[*mark] = true;
 456                                 }
 457                         }
 458                 }
 459                 // otherwise use a recursive portal flow, culling each portal to
 460                 // frustum and checking if the leaf the portal leads to is in the pvs
 461                 else
 462                 {
 463                         int leafstackpos;
 464                         mportal_t *p;
 465                         mleaf_t *leafstack[8192];
 466                         // simple-frustum portal method:
 467                         // follows portals leading outward from viewleaf, does not venture
 468                         // offscreen or into leafs that are not visible, faster than
 469                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 470                         // often culls some surfaces that pvs alone would miss
 471                         // (such as a room in pvs that is hidden behind a wall, but the
 472                         //  passage leading to the room is off-screen)
 473                         leafstack[0] = viewleaf;
 474                         leafstackpos = 1;
 475                         while (leafstackpos)
 476                         {
 477                                 r_refdef.stats.world_leafs++;
 478                                 leaf = leafstack[--leafstackpos];
 479                                 r_viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 480                                 // mark any surfaces bounding this leaf
 481                                 if (leaf->numleafsurfaces)
 482                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 483                                                 r_viewcache.world_surfacevisible[*mark] = true;
 484                                 // follow portals into other leafs
 485                                 // the checks are:
 486                                 // if viewer is behind portal (portal faces outward into the scene)
 487                                 // and the portal polygon's bounding box is on the screen
 488                                 // and the leaf has not been visited yet
 489                                 // and the leaf is visible in the pvs
 490                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 491                                 for (p = leaf->portals;p;p = p->next)
 492                                 {
 493                                         r_refdef.stats.world_portals++;
 494                                         if (DotProduct(r_view.origin, p->plane.normal) < (p->plane.dist + 1) && !R_CullBox(p->mins, p->maxs) && !r_viewcache.world_leafvisible[p->past - model->brush.data_leafs] && CHECKPVSBIT(r_viewcache.world_pvsbits, p->past->clusterindex))
 495                                                 leafstack[leafstackpos++] = p->past;
 496                                 }
 497                         }
 498                 }
 499         }
 500
 501         if (r_drawportals.integer)
 502                 R_DrawPortals();
 503 }
 504
 505 void R_Q1BSP_DrawSky(entity_render_t *ent)
 506 {
 507         if (ent->model == NULL)
 508                 return;
 509         R_DrawSurfaces(ent, true);
 510 }
 511
 512 void R_Q1BSP_Draw(entity_render_t *ent)
 513 {
 514         model_t *model = ent->model;
 515         if (model == NULL)
 516                 return;
 517         R_DrawSurfaces(ent, false);
 518 }
 519
 520 typedef struct r_q1bsp_getlightinfo_s
 521 {
 522         model_t *model;
 523         vec3_t relativelightorigin;
 524         float lightradius;
 525         int *outleaflist;
 526         unsigned char *outleafpvs;
 527         int outnumleafs;
 528         int *outsurfacelist;
 529         unsigned char *outsurfacepvs;
 530         int outnumsurfaces;
 531         vec3_t outmins;
 532         vec3_t outmaxs;
 533         vec3_t lightmins;
 534         vec3_t lightmaxs;
 535         const unsigned char *pvs;
 536 }
 537 r_q1bsp_getlightinfo_t;
 538
 539 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 540 {
 541         int sides;
 542         mleaf_t *leaf;
 543         for (;;)
 544         {
 545                 mplane_t *plane = node->plane;
 546                 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 547                 //      return;
 548                 if (!plane)
 549                         break;
 550                 if (plane->type < 3)
 551                         sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
 552                 else
 553                         sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 554                 if (sides == 3)
 555                 {
 556                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 557                         node = node->children[1];
 558                 }
 559                 else if (sides == 0)
 560                         return; // ERROR: NAN bounding box!
 561                 else
 562                         node = node->children[sides - 1];
 563         }
 564         leaf = (mleaf_t *)node;
 565         if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
 566         {
 567                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 568                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 569                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 570                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 571                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 572                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 573                 if (info->outleafpvs)
 574                 {
 575                         int leafindex = leaf - info->model->brush.data_leafs;
 576                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 577                         {
 578                                 SETPVSBIT(info->outleafpvs, leafindex);
 579                                 info->outleaflist[info->outnumleafs++] = leafindex;
 580                         }
 581                 }
 582                 if (info->outsurfacepvs)
 583                 {
 584                         int leafsurfaceindex;
 585                         for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 586                         {
 587                                 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 588                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 589                                 {
 590                                         msurface_t *surface = info->model->data_surfaces + surfaceindex;
 591                                         if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 592                                         {
 593                                                 int triangleindex, t;
 594                                                 const int *e;
 595                                                 const vec_t *v[3];
 596                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 597                                                 {
 598                                                         v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 599                                                         v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 600                                                         v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 601                                                         if (PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && info->lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && info->lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && info->lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && info->lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && info->lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && info->lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
 602                                                         {
 603                                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 604                                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 605                                                                 break;
 606                                                         }
 607                                                 }
 608                                         }
 609                                 }
 610                         }
 611                 }
 612         }
 613 }
 614
 615 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer)
 616 {
 617         r_q1bsp_getlightinfo_t info;
 618         VectorCopy(relativelightorigin, info.relativelightorigin);
 619         info.lightradius = lightradius;
 620         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 621         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 622         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 623         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 624         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 625         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 626         if (ent->model == NULL)
 627         {
 628                 VectorCopy(info.lightmins, outmins);
 629                 VectorCopy(info.lightmaxs, outmaxs);
 630                 *outnumleafspointer = 0;
 631                 *outnumsurfacespointer = 0;
 632                 return;
 633         }
 634         info.model = ent->model;
 635         info.outleaflist = outleaflist;
 636         info.outleafpvs = outleafpvs;
 637         info.outnumleafs = 0;
 638         info.outsurfacelist = outsurfacelist;
 639         info.outsurfacepvs = outsurfacepvs;
 640         info.outnumsurfaces = 0;
 641         VectorCopy(info.relativelightorigin, info.outmins);
 642         VectorCopy(info.relativelightorigin, info.outmaxs);
 643         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 644         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 645         if (info.model->brush.GetPVS)
 646                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 647         else
 648                 info.pvs = NULL;
 649         R_UpdateAllTextureInfo(ent);
 650         if (r_shadow_compilingrtlight)
 651         {
 652                 // use portal recursion for exact light volume culling, and exact surface checking
 653                 Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, true, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs);
 654         }
 655         else if (r_shadow_realtime_dlight_portalculling.integer)
 656         {
 657                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 658                 Portal_Visibility(info.model, info.relativelightorigin, info.outleaflist, info.outleafpvs, &info.outnumleafs, info.outsurfacelist, info.outsurfacepvs, &info.outnumsurfaces, NULL, 0, r_shadow_realtime_dlight_portalculling.integer >= 2, info.lightmins, info.lightmaxs, info.outmins, info.outmaxs);
 659         }
 660         else
 661         {
 662                 // use BSP recursion as lights are often small
 663                 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
 664         }
 665
 666         // limit combined leaf box to light boundaries
 667         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 668         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 669         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 670         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 671         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 672         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 673
 674         *outnumleafspointer = info.outnumleafs;
 675         *outnumsurfacespointer = info.outnumsurfaces;
 676 }
 677
 678 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
 679 {
 680         model_t *model = ent->model;
 681         msurface_t *surface;
 682         int surfacelistindex;
 683         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 684         texture_t *texture;
 685         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 686         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 687         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 688         {
 689                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 690                 texture = surface->texture;
 691                 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 692                         continue;
 693                 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 694                         continue;
 695                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs);
 696         }
 697         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 + projectdistance, numshadowmark, shadowmarklist);
 698         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
 699 }
 700
 701 void R_Q1BSP_DrawShadowVolume_Batch(const vec3_t relativelightorigin, const vec3_t lightmins, const vec3_t lightmaxs, int texturenumsurfaces, msurface_t **texturesurfacelist)
 702 {
 703         int texturesurfaceindex;
 704         RSurf_PrepareVerticesForBatch(false, false, texturenumsurfaces, texturesurfacelist);
 705         for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
 706         {
 707                 msurface_t *surface = texturesurfacelist[texturesurfaceindex];
 708                 R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, rsurface_model->surfmesh.data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 709         }
 710 }
 711
 712 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
 713 {
 714         model_t *model = ent->model;
 715         msurface_t *surface;
 716         int modelsurfacelistindex;
 717         int f = 0;
 718         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 719         texture_t *t = NULL;
 720         const int maxsurfacelist = 1024;
 721         int numsurfacelist = 0;
 722         msurface_t *surfacelist[1024];
 723         // check the box in modelspace, it was already checked in worldspace
 724         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
 725                 return;
 726         R_UpdateAllTextureInfo(ent);
 727         if (model->brush.shadowmesh)
 728         {
 729                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 730                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 731                 {
 732                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
 733                         t = surface->texture->currentframe;
 734                         if ((t->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 735                                 continue;
 736                         if ((t->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 737                                 continue;
 738                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 739                 }
 740                 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 + projectdistance, numshadowmark, shadowmarklist);
 741         }
 742         else
 743         {
 744                 projectdistance = lightradius + model->radius*2;
 745                 RSurf_ActiveEntity(ent, false, false);
 746                 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
 747                 // identify lit faces within the bounding box
 748                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 749                 {
 750                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
 751                         if (t != surface->texture || numsurfacelist >= maxsurfacelist)
 752                         {
 753                                 if (numsurfacelist)
 754                                 {
 755                                         R_Q1BSP_DrawShadowVolume_Batch(relativelightorigin, lightmins, lightmaxs, numsurfacelist, surfacelist);
 756                                         numsurfacelist = 0;
 757                                 }
 758                                 t = surface->texture;
 759                                 rsurface_texture = t->currentframe;
 760                                 f = (rsurface_texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) == MATERIALFLAG_WALL;
 761                         }
 762                         if (f && surface->num_triangles)
 763                                 surfacelist[numsurfacelist++] = surface;
 764                 }
 765                 if (numsurfacelist)
 766                         R_Q1BSP_DrawShadowVolume_Batch(relativelightorigin, lightmins, lightmaxs, numsurfacelist, surfacelist);
 767                 R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface_vertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 768         }
 769 }
 770
 771 #define BATCHSIZE 256
 772
 773 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 774 {
 775         int surfacelistindex, batchcount;
 776         texture_t *t;
 777         msurface_t *batchsurfaces[BATCHSIZE];
 778         // note: in practice this never actualy batches, oh well
 779         R_Shadow_RenderMode_Begin();
 780         R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
 781         R_Shadow_RenderMode_Lighting(false, true);
 782         R_Shadow_SetupEntityLight(ent);
 783         t = NULL;
 784         batchcount = 0;
 785         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 786         {
 787                 msurface_t *surface = ent->model->data_surfaces + surfacelist[surfacelistindex];
 788                 if (t != surface->texture)
 789                 {
 790                         if (batchcount > 0)
 791                                 R_Shadow_RenderSurfacesLighting(batchcount, batchsurfaces);
 792                         batchcount = 0;
 793                         t = surface->texture;
 794                         R_UpdateTextureInfo(ent, t);
 795                         rsurface_texture = t->currentframe;
 796                 }
 797                 batchsurfaces[batchcount++] = surface;
 798         }
 799         if (batchcount > 0)
 800                 R_Shadow_RenderSurfacesLighting(batchcount, batchsurfaces);
 801         R_Shadow_RenderMode_End();
 802 }
 803
 804 static void R_Q1BSP_DrawLight_TransparentBatch(int batchnumsurfaces, msurface_t **batchsurfacelist)
 805 {
 806         int batchsurfaceindex;
 807         msurface_t *batchsurface;
 808         vec3_t tempcenter, center;
 809         for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
 810         {
 811                 batchsurface = batchsurfacelist[batchsurfaceindex];
 812                 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
 813                 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
 814                 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
 815                 Matrix4x4_Transform(&rsurface_entity->matrix, tempcenter, center);
 816                 R_MeshQueue_AddTransparent(rsurface_texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, rsurface_entity, batchsurface - rsurface_model->data_surfaces, r_shadow_rtlight);
 817         }
 818 }
 819
 820 #define RSURF_MAX_BATCHSURFACES 1024
 821
 822 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
 823 {
 824         model_t *model = ent->model;
 825         msurface_t *surface;
 826         int surfacelistindex, batchnumsurfaces;
 827         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
 828         texture_t *tex;
 829         qboolean skip;
 830         CHECKGLERROR
 831         RSurf_ActiveEntity(ent, true, true);
 832         R_UpdateAllTextureInfo(ent);
 833         tex = NULL;
 834         rsurface_texture = NULL;
 835         skip = false;
 836         batchnumsurfaces = 0;
 837         CHECKGLERROR
 838         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 839         {
 840                 if ((ent == r_refdef.worldentity && !r_viewcache.world_surfacevisible[surfacelist[surfacelistindex]]))
 841                         continue;
 842                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 843                 r_refdef.stats.lights_lighttriangles += surface->num_triangles;
 844                 if (tex != surface->texture)
 845                 {
 846                         if (batchnumsurfaces > 0)
 847                         {
 848                                 if (rsurface_texture->currentmaterialflags & MATERIALFLAG_BLENDED)
 849                                         R_Q1BSP_DrawLight_TransparentBatch(batchnumsurfaces, batchsurfacelist);
 850                                 else
 851                                         R_Shadow_RenderSurfacesLighting(batchnumsurfaces, batchsurfacelist);
 852                                 batchnumsurfaces = 0;
 853                         }
 854                         tex = surface->texture;
 855                         rsurface_texture = surface->texture->currentframe;
 856                         skip = (rsurface_texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
 857                         if (skip)
 858                                 continue;
 859                 }
 860                 if (!skip && surface->num_triangles)
 861                 {
 862                         if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
 863                         {
 864                                 if (rsurface_texture->currentmaterialflags & MATERIALFLAG_BLENDED)
 865                                         R_Q1BSP_DrawLight_TransparentBatch(batchnumsurfaces, batchsurfacelist);
 866                                 else
 867                                         R_Shadow_RenderSurfacesLighting(batchnumsurfaces, batchsurfacelist);
 868                                 batchnumsurfaces = 0;
 869                         }
 870                         batchsurfacelist[batchnumsurfaces++] = surface;
 871                 }
 872         }
 873         if (batchnumsurfaces > 0)
 874         {
 875                 if (rsurface_texture->currentmaterialflags & MATERIALFLAG_BLENDED)
 876                         R_Q1BSP_DrawLight_TransparentBatch(batchnumsurfaces, batchsurfacelist);
 877                 else
 878                         R_Shadow_RenderSurfacesLighting(batchnumsurfaces, batchsurfacelist);
 879                 batchnumsurfaces = 0;
 880         }
 881         qglEnable(GL_CULL_FACE);CHECKGLERROR
 882 }
 883
 884 //Made by [515]
 885 void R_ReplaceWorldTexture (void)
 886 {
 887         model_t         *m;
 888         texture_t       *t;
 889         int                     i;
 890         const char      *r, *newt;
 891         m = r_refdef.worldmodel;
 892
 893         if(Cmd_Argc() < 2)
 894         {
 895                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
 896                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
 897                 return;
 898         }
 899         if(!cl.islocalgame || !cl.worldmodel)
 900         {
 901                 Con_Print("This command works only in singleplayer\n");
 902                 return;
 903         }
 904         r = Cmd_Argv(1);
 905         newt = Cmd_Argv(2);
 906         if(!newt[0])
 907                 newt = r;
 908         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 909         {
 910                 if(t->width && !strcasecmp(t->name, r))
 911                 {
 912                         if(Mod_LoadSkinFrame(&t->skin, (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
 913                         {
 914                                 Con_Printf("%s replaced with %s\n", r, newt);
 915                                 return;
 916                         }
 917                         else
 918                         {
 919                                 Con_Printf("%s was not found\n", newt);
 920                                 Mod_LoadSkinFrame(&t->skin, (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
 921                                 return;
 922                         }
 923                 }
 924         }
 925 }
 926
 927 //Made by [515]
 928 void R_ListWorldTextures (void)
 929 {
 930         model_t         *m;
 931         texture_t       *t;
 932         int                     i;
 933         m = r_refdef.worldmodel;
 934
 935         Con_Print("Worldmodel textures :\n");
 936         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 937                 if(t->skin.base != r_texture_notexture)
 938                         Con_Printf("%s\n", t->name);
 939 }
 940
 941 #if 0
 942 static void gl_surf_start(void)
 943 {
 944 }
 945
 946 static void gl_surf_shutdown(void)
 947 {
 948 }
 949
 950 static void gl_surf_newmap(void)
 951 {
 952 }
 953 #endif
 954
 955 void GL_Surf_Init(void)
 956 {
 957
 958         Cvar_RegisterVariable(&r_ambient);
 959         Cvar_RegisterVariable(&r_drawportals);
 960         Cvar_RegisterVariable(&r_lockpvs);
 961         Cvar_RegisterVariable(&r_lockvisibility);
 962         Cvar_RegisterVariable(&r_useportalculling);
 963         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 964
 965         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");   // By [515]
 966         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map"); // By [515]
 967
 968         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
 969 }
 970