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 #include "csprogs.h"
  26 #include "image.h"
  27
  28 cvar_t r_ambient = {CF_CLIENT, "r_ambient", "0", "brightens map, value is 0-128"};
  29 cvar_t r_lockpvs = {CF_CLIENT, "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)"};
  30 cvar_t r_lockvisibility = {CF_CLIENT, "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)"};
  31 cvar_t r_useportalculling = {CF_CLIENT, "r_useportalculling", "1", "improve framerate with r_novis 1 by using portal culling - still not as good as compiled visibility data in the map, but it helps (a value of 2 forces use of this even with vis data, which improves framerates in maps without too much complexity, but hurts in extremely complex maps, which is why 2 is not the default mode)"};
  32 cvar_t r_usesurfaceculling = {CF_CLIENT, "r_usesurfaceculling", "1", "skip off-screen surfaces (1 = cull surfaces if the map is likely to benefit, 2 = always cull surfaces)"};
  33 cvar_t r_vis_trace = {CF_CLIENT, "r_vis_trace", "0", "test if each portal or leaf is visible using tracelines"};
  34 cvar_t r_vis_trace_samples = {CF_CLIENT, "r_vis_trace_samples", "1", "use this many randomly positioned tracelines each frame to refresh the visible timer"};
  35 cvar_t r_vis_trace_delay = {CF_CLIENT, "r_vis_trace_delay", "1", "keep a portal visible for this many seconds"};
  36 cvar_t r_vis_trace_eyejitter = {CF_CLIENT, "r_vis_trace_eyejitter", "8", "use a random offset of this much on the start of each traceline"};
  37 cvar_t r_vis_trace_enlarge = {CF_CLIENT, "r_vis_trace_enlarge", "0", "make portal bounds bigger for tests by (1+this)*size"};
  38 cvar_t r_vis_trace_expand = {CF_CLIENT, "r_vis_trace_expand", "0", "make portal bounds bigger for tests by this many units"};
  39 cvar_t r_vis_trace_pad = {CF_CLIENT, "r_vis_trace_pad", "8", "accept traces that hit within this many units of the portal"};
  40 cvar_t r_vis_trace_surfaces = {CF_CLIENT, "r_vis_trace_surfaces", "0", "also use tracelines to cull surfaces"};
  41 cvar_t r_q3bsp_renderskydepth = {CF_CLIENT, "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"};
  42
  43 /*
  44 ===============
  45 R_BuildLightMap
  46
  47 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  48 ===============
  49 */
  50 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface, int combine)
  51 {
  52         int smax, tmax, i, size, size3, maps, l;
  53         int *bl, scale;
  54         unsigned char *lightmap, *out, *stain;
  55         model_t *model = ent->model;
  56         int *intblocklights;
  57         unsigned char *templight;
  58
  59         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  60         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  61         size = smax*tmax;
  62         size3 = size*3;
  63
  64         r_refdef.stats[r_stat_lightmapupdatepixels] += size;
  65         r_refdef.stats[r_stat_lightmapupdates]++;
  66
  67         if (cl.buildlightmapmemorysize < size*sizeof(int[3]))
  68         {
  69                 cl.buildlightmapmemorysize = size*sizeof(int[3]);
  70                 if (cl.buildlightmapmemory)
  71                         Mem_Free(cl.buildlightmapmemory);
  72                 cl.buildlightmapmemory = (unsigned char *) Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
  73         }
  74
  75         // these both point at the same buffer, templight is only used for final
  76         // processing and can replace the intblocklights data as it goes
  77         intblocklights = (int *)cl.buildlightmapmemory;
  78         templight = (unsigned char *)cl.buildlightmapmemory;
  79
  80         // update cached lighting info
  81         model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = false;
  82
  83         lightmap = surface->lightmapinfo->samples;
  84
  85 // set to full bright if no light data
  86         bl = intblocklights;
  87         if (!model->brushq1.lightdata)
  88         {
  89                 for (i = 0;i < size3;i++)
  90                         bl[i] = 128*256;
  91         }
  92         else
  93         {
  94 // clear to no light
  95                 memset(bl, 0, size3*sizeof(*bl));
  96
  97 // add all the lightmaps
  98                 if (lightmap)
  99                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
 100                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
 101                                         bl[i] += lightmap[i] * scale;
 102         }
 103
 104         stain = surface->lightmapinfo->stainsamples;
 105         bl = intblocklights;
 106         out = templight;
 107         // the >> 16 shift adjusts down 8 bits to account for the stainmap
 108         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
 109         // be doubled during rendering to achieve 2x overbright
 110         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 111         if (stain)
 112         {
 113                 for (i = 0;i < size;i++, bl += 3, stain += 3, out += 4)
 114                 {
 115                         l = (bl[0] * stain[0]) >> 16;out[2] = min(l, 255);
 116                         l = (bl[1] * stain[1]) >> 16;out[1] = min(l, 255);
 117                         l = (bl[2] * stain[2]) >> 16;out[0] = min(l, 255);
 118                         out[3] = 255;
 119                 }
 120         }
 121         else
 122         {
 123                 for (i = 0;i < size;i++, bl += 3, out += 4)
 124                 {
 125                         l = bl[0] >> 8;out[2] = min(l, 255);
 126                         l = bl[1] >> 8;out[1] = min(l, 255);
 127                         l = bl[2] >> 8;out[0] = min(l, 255);
 128                         out[3] = 255;
 129                 }
 130         }
 131
 132         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
 133                 Image_MakesRGBColorsFromLinear_Lightmap(templight, templight, size);
 134         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1, combine);
 135
 136         // update the surface's deluxemap if it has one
 137         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 138         {
 139                 vec3_t n;
 140                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 141                 lightmap = surface->lightmapinfo->samples;
 142                 // clear to no normalmap
 143                 bl = intblocklights;
 144                 memset(bl, 0, size3*sizeof(*bl));
 145                 // add all the normalmaps
 146                 if (lightmap && normalmap)
 147                 {
 148                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 149                         {
 150                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 151                                 {
 152                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 153                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 154                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 155                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 156                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 157                                 }
 158                         }
 159                 }
 160                 bl = intblocklights;
 161                 out = templight;
 162                 // we simply renormalize the weighted normals to get a valid deluxemap
 163                 for (i = 0;i < size;i++, bl += 3, out += 4)
 164                 {
 165                         VectorCopy(bl, n);
 166                         VectorNormalize(n);
 167                         l = (int)(n[0] * 128 + 128);out[2] = bound(0, l, 255);
 168                         l = (int)(n[1] * 128 + 128);out[1] = bound(0, l, 255);
 169                         l = (int)(n[2] * 128 + 128);out[0] = bound(0, l, 255);
 170                         out[3] = 255;
 171                 }
 172                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1, r_q1bsp_lightmap_updates_combine.integer);
 173         }
 174 }
 175
 176 static void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 177 {
 178         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 179         msurface_t *surface, *endsurface;
 180         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 181         unsigned char *bl;
 182         vec3_t impact;
 183
 184         maxdist = radius * radius;
 185         invradius = 1.0f / radius;
 186
 187 loc0:
 188         if (!node->plane)
 189                 return;
 190         ndist = PlaneDiff(origin, node->plane);
 191         if (ndist > radius)
 192         {
 193                 node = node->children[0];
 194                 goto loc0;
 195         }
 196         if (ndist < -radius)
 197         {
 198                 node = node->children[1];
 199                 goto loc0;
 200         }
 201
 202         dist2 = ndist * ndist;
 203         maxdist3 = maxdist - dist2;
 204
 205         if (node->plane->type < 3)
 206         {
 207                 VectorCopy(origin, impact);
 208                 impact[node->plane->type] -= ndist;
 209         }
 210         else
 211         {
 212                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 213                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 214                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 215         }
 216
 217         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 218         {
 219                 if (surface->lightmapinfo->stainsamples)
 220                 {
 221                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 222                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 223
 224                         impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
 225                         impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 226
 227                         s = bound(0, impacts, smax * 16) - impacts;
 228                         t = bound(0, impactt, tmax * 16) - impactt;
 229                         i = (int)(s * s + t * t + dist2);
 230                         if ((i > maxdist) || (smax > (int)(sizeof(sdtable)/sizeof(sdtable[0])))) // smax overflow fix from Andreas Dehmel
 231                                 continue;
 232
 233                         // reduce calculations
 234                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 235                                 sdtable[s] = i * i + dist2;
 236
 237                         bl = surface->lightmapinfo->stainsamples;
 238                         smax3 = smax * 3;
 239                         stained = false;
 240
 241                         i = impactt;
 242                         for (t = 0;t < tmax;t++, i -= 16)
 243                         {
 244                                 td = i * i;
 245                                 // make sure some part of it is visible on this line
 246                                 if (td < maxdist3)
 247                                 {
 248                                         maxdist2 = maxdist - td;
 249                                         for (s = 0;s < smax;s++)
 250                                         {
 251                                                 if (sdtable[s] < maxdist2)
 252                                                 {
 253                                                         ratio = lhrandom(0.0f, 1.0f);
 254                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 255                                                         if (a >= (1.0f / 64.0f))
 256                                                         {
 257                                                                 if (a > 1)
 258                                                                         a = 1;
 259                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 260                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 261                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 262                                                                 stained = true;
 263                                                         }
 264                                                 }
 265                                                 bl += 3;
 266                                         }
 267                                 }
 268                                 else // skip line
 269                                         bl += smax3;
 270                         }
 271                         // force lightmap upload
 272                         if (stained)
 273                                 model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = true;
 274                 }
 275         }
 276
 277         if (node->children[0]->plane)
 278         {
 279                 if (node->children[1]->plane)
 280                 {
 281                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 282                         node = node->children[1];
 283                         goto loc0;
 284                 }
 285                 else
 286                 {
 287                         node = node->children[0];
 288                         goto loc0;
 289                 }
 290         }
 291         else if (node->children[1]->plane)
 292         {
 293                 node = node->children[1];
 294                 goto loc0;
 295         }
 296 }
 297
 298 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)
 299 {
 300         int n;
 301         float fcolor[8];
 302         entity_render_t *ent;
 303         model_t *model;
 304         vec3_t org;
 305         if (r_refdef.scene.worldmodel == NULL || !r_refdef.scene.worldmodel->brush.data_nodes || !r_refdef.scene.worldmodel->brushq1.lightdata)
 306                 return;
 307         fcolor[0] = cr1;
 308         fcolor[1] = cg1;
 309         fcolor[2] = cb1;
 310         fcolor[3] = ca1 * (1.0f / 64.0f);
 311         fcolor[4] = cr2 - cr1;
 312         fcolor[5] = cg2 - cg1;
 313         fcolor[6] = cb2 - cb1;
 314         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 315
 316         R_StainNode(r_refdef.scene.worldmodel->brush.data_nodes + r_refdef.scene.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.scene.worldmodel, origin, radius, fcolor);
 317
 318         // look for embedded bmodels
 319         for (n = 0;n < cl.num_brushmodel_entities;n++)
 320         {
 321                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 322                 model = ent->model;
 323                 if (model && model->name[0] == '*')
 324                 {
 325                         if (model->brush.data_nodes)
 326                         {
 327                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 328                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 329                         }
 330                 }
 331         }
 332 }
 333
 334
 335 /*
 336 =============================================================
 337
 338         BRUSH MODELS
 339
 340 =============================================================
 341 */
 342
 343 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 344 {
 345         // due to the hacky nature of this function's parameters, this is never
 346         // called with a batch, so numsurfaces is always 1, and the surfacelist
 347         // contains only a leaf number for coloring purposes
 348         const mportal_t *portal = (mportal_t *)ent;
 349         qbool isvis;
 350         int i, numpoints;
 351         float *v;
 352         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 353         CHECKGLERROR
 354         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 355         GL_DepthMask(false);
 356         GL_DepthRange(0, 1);
 357         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
 358         GL_DepthTest(true);
 359         GL_CullFace(GL_NONE);
 360         R_EntityMatrix(&identitymatrix);
 361
 362         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 363
 364 //      R_Mesh_ResetTextureState();
 365
 366         isvis = (portal->here->clusterindex >= 0 && portal->past->clusterindex >= 0 && portal->here->clusterindex != portal->past->clusterindex);
 367
 368         i = surfacelist[0] >> 1;
 369         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 370                          ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 371                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 372                          isvis ? 0.125f : 0.03125f);
 373         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 374                 VectorCopy(portal->points[i].position, v);
 375         R_Mesh_PrepareVertices_Generic_Arrays(numpoints, vertex3f, NULL, NULL);
 376         R_SetupShader_Generic_NoTexture(false, false);
 377         R_Mesh_Draw(0, numpoints, 0, numpoints - 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
 378 }
 379
 380 // LadyHavoc: this is just a nice debugging tool, very slow
 381 void R_DrawPortals(void)
 382 {
 383         int i, leafnum;
 384         mportal_t *portal;
 385         float center[3], f;
 386         model_t *model = r_refdef.scene.worldmodel;
 387         if (model == NULL)
 388                 return;
 389         for (leafnum = 0;leafnum < model->brush.num_leafs;leafnum++)
 390         {
 391                 if (r_refdef.viewcache.world_leafvisible[leafnum])
 392                 {
 393                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 394                         for (portal = model->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 395                         {
 396                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 397                                 if (!R_CullBox(portal->mins, portal->maxs))
 398                                 {
 399                                         VectorClear(center);
 400                                         for (i = 0;i < portal->numpoints;i++)
 401                                                 VectorAdd(center, portal->points[i].position, center);
 402                                         f = ixtable[portal->numpoints];
 403                                         VectorScale(center, f, center);
 404                                         R_MeshQueue_AddTransparent(TRANSPARENTSORT_DISTANCE, center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, rsurface.rtlight);
 405                                 }
 406                         }
 407                 }
 408         }
 409 }
 410
 411 static void R_View_WorldVisibility_CullSurfaces(void)
 412 {
 413         int surfaceindex;
 414         unsigned char *surfacevisible;
 415         msurface_t *surfaces;
 416         model_t *model = r_refdef.scene.worldmodel;
 417         if (!model)
 418                 return;
 419         if (r_trippy.integer)
 420                 return;
 421         if (r_usesurfaceculling.integer < 1)
 422                 return;
 423         surfaces = model->data_surfaces;
 424         surfacevisible = r_refdef.viewcache.world_surfacevisible;
 425         for (surfaceindex = model->submodelsurfaces_start; surfaceindex < model->submodelsurfaces_end; surfaceindex++)
 426         {
 427                 if (surfacevisible[surfaceindex])
 428                 {
 429                         if (R_CullBox(surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs)
 430                          || (r_vis_trace_surfaces.integer && !R_CanSeeBox(r_vis_trace_samples.integer, r_vis_trace_eyejitter.value, r_vis_trace_enlarge.value, r_vis_trace_expand.value, r_vis_trace_pad.value, r_refdef.view.origin, surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs)))
 431                                 surfacevisible[surfaceindex] = 0;
 432                 }
 433         }
 434 }
 435
 436 void R_View_WorldVisibility(qbool forcenovis)
 437 {
 438         int i, j, *mark;
 439         mleaf_t *leaf;
 440         mleaf_t *viewleaf;
 441         model_t *model = r_refdef.scene.worldmodel;
 442
 443         if (!model)
 444                 return;
 445
 446         if (r_lockvisibility.integer)
 447                 return;
 448
 449         // clear the visible surface and leaf flags arrays
 450         memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 451         if(!r_lockpvs.integer)
 452                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 453
 454         r_refdef.viewcache.world_novis = false;
 455
 456         if (r_refdef.view.usecustompvs)
 457         {
 458                 // simply cull each marked leaf to the frustum (view pyramid)
 459                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 460                 {
 461                         // if leaf is in current pvs and on the screen, mark its surfaces
 462                         if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 463                         {
 464                                 r_refdef.stats[r_stat_world_leafs]++;
 465                                 r_refdef.viewcache.world_leafvisible[j] = true;
 466                                 if (leaf->numleafsurfaces)
 467                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 468                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 469                         }
 470                 }
 471         }
 472         else
 473         {
 474                 // if possible find the leaf the view origin is in
 475                 viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_refdef.view.origin) : NULL;
 476                 // if possible fetch the visible cluster bits
 477                 if (!r_lockpvs.integer && model->brush.FatPVS)
 478                         model->brush.FatPVS(model, r_refdef.view.origin, 2, r_refdef.viewcache.world_pvsbits, (r_refdef.viewcache.world_numclusters+7)>>3, false);
 479
 480                 // if floating around in the void (no pvs data available, and no
 481                 // portals available), simply use all on-screen leafs.
 482                 if (!viewleaf || viewleaf->clusterindex < 0 || forcenovis || !r_refdef.view.usevieworiginculling)
 483                 {
 484                         // no visibility method: (used when floating around in the void)
 485                         // simply cull each leaf to the frustum (view pyramid)
 486                         // similar to quake's RecursiveWorldNode but without cache misses
 487                         r_refdef.viewcache.world_novis = true;
 488                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 489                         {
 490                                 if (leaf->clusterindex < 0)
 491                                         continue;
 492                                 // if leaf is in current pvs and on the screen, mark its surfaces
 493                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 494                                 {
 495                                         r_refdef.stats[r_stat_world_leafs]++;
 496                                         r_refdef.viewcache.world_leafvisible[j] = true;
 497                                         if (leaf->numleafsurfaces)
 498                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 499                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 500                                 }
 501                         }
 502                 }
 503                 // just check if each leaf in the PVS is on screen
 504                 // (unless portal culling is enabled)
 505                 else if (!model->brush.data_portals || r_useportalculling.integer < 1 || (r_useportalculling.integer < 2 && !r_novis.integer))
 506                 {
 507                         // pvs method:
 508                         // simply check if each leaf is in the Potentially Visible Set,
 509                         // and cull to frustum (view pyramid)
 510                         // similar to quake's RecursiveWorldNode but without cache misses
 511                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 512                         {
 513                                 if (leaf->clusterindex < 0)
 514                                         continue;
 515                                 // if leaf is in current pvs and on the screen, mark its surfaces
 516                                 if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 517                                 {
 518                                         r_refdef.stats[r_stat_world_leafs]++;
 519                                         r_refdef.viewcache.world_leafvisible[j] = true;
 520                                         if (leaf->numleafsurfaces)
 521                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 522                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 523                                 }
 524                         }
 525                 }
 526                 // if desired use a recursive portal flow, culling each portal to
 527                 // frustum and checking if the leaf the portal leads to is in the pvs
 528                 else
 529                 {
 530                         int leafstackpos;
 531                         mportal_t *p;
 532                         mleaf_t *leafstack[8192];
 533                         vec3_t cullmins, cullmaxs;
 534                         float cullbias = r_nearclip.value * 2.0f; // the nearclip plane can easily end up culling portals in certain perfectly-aligned views, causing view blackouts
 535                         // simple-frustum portal method:
 536                         // follows portals leading outward from viewleaf, does not venture
 537                         // offscreen or into leafs that are not visible, faster than
 538                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 539                         // often culls some surfaces that pvs alone would miss
 540                         // (such as a room in pvs that is hidden behind a wall, but the
 541                         //  passage leading to the room is off-screen)
 542                         leafstack[0] = viewleaf;
 543                         leafstackpos = 1;
 544                         while (leafstackpos)
 545                         {
 546                                 leaf = leafstack[--leafstackpos];
 547                                 if (r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs])
 548                                         continue;
 549                                 if (leaf->clusterindex < 0)
 550                                         continue;
 551                                 r_refdef.stats[r_stat_world_leafs]++;
 552                                 r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 553                                 // mark any surfaces bounding this leaf
 554                                 if (leaf->numleafsurfaces)
 555                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 556                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 557                                 // follow portals into other leafs
 558                                 // the checks are:
 559                                 // the leaf has not been visited yet
 560                                 // and the leaf is visible in the pvs
 561                                 // the portal polygon's bounding box is on the screen
 562                                 for (p = leaf->portals;p;p = p->next)
 563                                 {
 564                                         r_refdef.stats[r_stat_world_portals]++;
 565                                         if (r_refdef.viewcache.world_leafvisible[p->past - model->brush.data_leafs])
 566                                                 continue;
 567                                         if (!CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, p->past->clusterindex))
 568                                                 continue;
 569                                         cullmins[0] = p->mins[0] - cullbias;
 570                                         cullmins[1] = p->mins[1] - cullbias;
 571                                         cullmins[2] = p->mins[2] - cullbias;
 572                                         cullmaxs[0] = p->maxs[0] + cullbias;
 573                                         cullmaxs[1] = p->maxs[1] + cullbias;
 574                                         cullmaxs[2] = p->maxs[2] + cullbias;
 575                                         if (R_CullBox(cullmins, cullmaxs))
 576                                                 continue;
 577                                         if (r_vis_trace.integer)
 578                                         {
 579                                                 if (p->tracetime != host.realtime && R_CanSeeBox(r_vis_trace_samples.value, r_vis_trace_eyejitter.value, r_vis_trace_enlarge.value, r_vis_trace_expand.value, r_vis_trace_pad.value, r_refdef.view.origin, cullmins, cullmaxs))
 580                                                         p->tracetime = host.realtime;
 581                                                 if (host.realtime - p->tracetime > r_vis_trace_delay.value)
 582                                                         continue;
 583                                         }
 584                                         if (leafstackpos >= (int)(sizeof(leafstack) / sizeof(leafstack[0])))
 585                                                 break;
 586                                         leafstack[leafstackpos++] = p->past;
 587                                 }
 588                         }
 589                 }
 590         }
 591
 592         // Cull the rest
 593         R_View_WorldVisibility_CullSurfaces();
 594 }
 595
 596 void R_Mod_DrawSky(entity_render_t *ent)
 597 {
 598         if (ent->model == NULL)
 599                 return;
 600         R_DrawModelSurfaces(ent, true, true, false, false, false, false);
 601 }
 602
 603 void R_Mod_DrawAddWaterPlanes(entity_render_t *ent)
 604 {
 605         int i, j, n, flagsmask;
 606         model_t *model = ent->model;
 607         msurface_t *surfaces;
 608         if (model == NULL)
 609                 return;
 610
 611         RSurf_ActiveModelEntity(ent, true, false, false);
 612
 613         surfaces = model->data_surfaces;
 614         flagsmask = MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA;
 615
 616         // add visible surfaces to draw list
 617         if (ent == r_refdef.scene.worldentity)
 618         {
 619                 for (i = model->submodelsurfaces_start;i < model->submodelsurfaces_end;i++)
 620                 {
 621                         j = model->modelsurfaces_sorted[i];
 622                         if (r_refdef.viewcache.world_surfacevisible[j])
 623                                 if (surfaces[j].texture->basematerialflags & flagsmask)
 624                                         R_Water_AddWaterPlane(surfaces + j, 0);
 625                 }
 626         }
 627         else
 628         {
 629                 if(ent->entitynumber >= MAX_EDICTS) // && CL_VM_TransformView(ent->entitynumber - MAX_EDICTS, NULL, NULL, NULL))
 630                         n = ent->entitynumber;
 631                 else
 632                         n = 0;
 633                 for (i = model->submodelsurfaces_start;i < model->submodelsurfaces_end;i++)
 634                 {
 635                         j = model->modelsurfaces_sorted[i];
 636                         if (surfaces[j].texture->basematerialflags & flagsmask)
 637                                 R_Water_AddWaterPlane(surfaces + j, n);
 638                 }
 639         }
 640         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveModelEntity
 641 }
 642
 643 void R_Mod_Draw(entity_render_t *ent)
 644 {
 645         model_t *model = ent->model;
 646         if (model == NULL)
 647                 return;
 648         R_DrawModelSurfaces(ent, false, true, false, false, false, false);
 649 }
 650
 651 void R_Mod_DrawDepth(entity_render_t *ent)
 652 {
 653         model_t *model = ent->model;
 654         if (model == NULL || model->surfmesh.isanimated)
 655                 return;
 656         GL_ColorMask(0,0,0,0);
 657         GL_Color(1,1,1,1);
 658         GL_DepthTest(true);
 659         GL_BlendFunc(GL_ONE, GL_ZERO);
 660         GL_DepthMask(true);
 661 //      R_Mesh_ResetTextureState();
 662         R_DrawModelSurfaces(ent, false, false, true, false, false, false);
 663         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
 664 }
 665
 666 void R_Mod_DrawDebug(entity_render_t *ent)
 667 {
 668         if (ent->model == NULL)
 669                 return;
 670         R_DrawModelSurfaces(ent, false, false, false, true, false, false);
 671 }
 672
 673 void R_Mod_DrawPrepass(entity_render_t *ent)
 674 {
 675         model_t *model = ent->model;
 676         if (model == NULL)
 677                 return;
 678         R_DrawModelSurfaces(ent, false, true, false, false, true, false);
 679 }
 680
 681 typedef struct r_q1bsp_getlightinfo_s
 682 {
 683         model_t *model;
 684         vec3_t relativelightorigin;
 685         float lightradius;
 686         int *outleaflist;
 687         unsigned char *outleafpvs;
 688         int outnumleafs;
 689         unsigned char *visitingleafpvs;
 690         int *outsurfacelist;
 691         unsigned char *outsurfacepvs;
 692         unsigned char *tempsurfacepvs;
 693         unsigned char *outshadowtrispvs;
 694         unsigned char *outlighttrispvs;
 695         int outnumsurfaces;
 696         vec3_t outmins;
 697         vec3_t outmaxs;
 698         vec3_t lightmins;
 699         vec3_t lightmaxs;
 700         const unsigned char *pvs;
 701         qbool svbsp_active;
 702         qbool svbsp_insertoccluder;
 703         qbool noocclusion; // avoids PVS culling
 704         qbool frontsidecasting; // casts shadows from surfaces facing the light (otherwise ones facing away)
 705         int numfrustumplanes;
 706         const mplane_t *frustumplanes;
 707 }
 708 r_q1bsp_getlightinfo_t;
 709
 710 #define GETLIGHTINFO_MAXNODESTACK 4096
 711
 712 static void R_Q1BSP_RecursiveGetLightInfo_BSP(r_q1bsp_getlightinfo_t *info, qbool skipsurfaces)
 713 {
 714         // nodestack
 715         mnode_t *nodestack[GETLIGHTINFO_MAXNODESTACK];
 716         int nodestackpos = 0;
 717         // node processing
 718         mplane_t *plane;
 719         mnode_t *node;
 720         int sides;
 721         // leaf processing
 722         mleaf_t *leaf;
 723         const msurface_t *surface;
 724         const msurface_t *surfaces = info->model->data_surfaces;
 725         int numleafsurfaces;
 726         int leafsurfaceindex;
 727         int surfaceindex;
 728         int triangleindex, t;
 729         int currentmaterialflags;
 730         qbool castshadow;
 731         const int *e;
 732         const vec_t *v[3];
 733         float v2[3][3];
 734         qbool insidebox;
 735         qbool noocclusion = info->noocclusion;
 736         qbool frontsidecasting = info->frontsidecasting;
 737         qbool svbspactive = info->svbsp_active;
 738         qbool svbspinsertoccluder = info->svbsp_insertoccluder;
 739         const int *leafsurfaceindices;
 740         qbool addedtris;
 741         int i;
 742         mportal_t *portal;
 743         static float points[128][3];
 744         // push the root node onto our nodestack
 745         nodestack[nodestackpos++] = info->model->brush.data_nodes;
 746         // we'll be done when the nodestack is empty
 747         while (nodestackpos)
 748         {
 749                 // get a node from the stack to process
 750                 node = nodestack[--nodestackpos];
 751                 // is it a node or a leaf?
 752                 plane = node->plane;
 753                 if (plane)
 754                 {
 755                         // node
 756 #if 0
 757                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 758                                 continue;
 759 #endif
 760 #if 0
 761                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
 762                                 continue;
 763 #endif
 764                         // axial planes can be processed much more quickly
 765                         if (plane->type < 3)
 766                         {
 767                                 // axial plane
 768                                 if (info->lightmins[plane->type] > plane->dist)
 769                                         nodestack[nodestackpos++] = node->children[0];
 770                                 else if (info->lightmaxs[plane->type] < plane->dist)
 771                                         nodestack[nodestackpos++] = node->children[1];
 772                                 else
 773                                 {
 774                                         // recurse front side first because the svbsp building prefers it
 775                                         if (info->relativelightorigin[plane->type] >= plane->dist)
 776                                         {
 777                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 778                                                         nodestack[nodestackpos++] = node->children[0];
 779                                                 nodestack[nodestackpos++] = node->children[1];
 780                                         }
 781                                         else
 782                                         {
 783                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 784                                                         nodestack[nodestackpos++] = node->children[1];
 785                                                 nodestack[nodestackpos++] = node->children[0];
 786                                         }
 787                                 }
 788                         }
 789                         else
 790                         {
 791                                 // sloped plane
 792                                 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 793                                 switch (sides)
 794                                 {
 795                                 default:
 796                                         continue; // ERROR: NAN bounding box!
 797                                 case 1:
 798                                         nodestack[nodestackpos++] = node->children[0];
 799                                         break;
 800                                 case 2:
 801                                         nodestack[nodestackpos++] = node->children[1];
 802                                         break;
 803                                 case 3:
 804                                         // recurse front side first because the svbsp building prefers it
 805                                         if (PlaneDist(info->relativelightorigin, plane) >= 0)
 806                                         {
 807                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 808                                                         nodestack[nodestackpos++] = node->children[0];
 809                                                 nodestack[nodestackpos++] = node->children[1];
 810                                         }
 811                                         else
 812                                         {
 813                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 814                                                         nodestack[nodestackpos++] = node->children[1];
 815                                                 nodestack[nodestackpos++] = node->children[0];
 816                                         }
 817                                         break;
 818                                 }
 819                         }
 820                 }
 821                 else
 822                 {
 823                         // leaf
 824                         leaf = (mleaf_t *)node;
 825 #if 1
 826                         if (!info->noocclusion && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
 827                                 continue;
 828 #endif
 829 #if 1
 830                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
 831                                 continue;
 832 #endif
 833 #if 1
 834                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
 835                                 continue;
 836 #endif
 837
 838                         if (svbspactive)
 839                         {
 840                                 // we can occlusion test the leaf by checking if all of its portals
 841                                 // are occluded (unless the light is in this leaf - but that was
 842                                 // already handled by the caller)
 843                                 for (portal = leaf->portals;portal;portal = portal->next)
 844                                 {
 845                                         for (i = 0;i < portal->numpoints;i++)
 846                                                 VectorCopy(portal->points[i].position, points[i]);
 847                                         if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
 848                                                 break;
 849                                 }
 850                                 if (leaf->portals && portal == NULL)
 851                                         continue; // no portals of this leaf visible
 852                         }
 853
 854                         // add this leaf to the reduced light bounds
 855                         info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 856                         info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 857                         info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 858                         info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 859                         info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 860                         info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 861
 862                         // mark this leaf as being visible to the light
 863                         if (info->outleafpvs)
 864                         {
 865                                 int leafindex = leaf - info->model->brush.data_leafs;
 866                                 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 867                                 {
 868                                         SETPVSBIT(info->outleafpvs, leafindex);
 869                                         info->outleaflist[info->outnumleafs++] = leafindex;
 870                                 }
 871                         }
 872
 873                         // when using BIH, we skip the surfaces here
 874                         if (skipsurfaces)
 875                                 continue;
 876
 877                         // iterate the surfaces linked by this leaf and check their triangles
 878                         leafsurfaceindices = leaf->firstleafsurface;
 879                         numleafsurfaces = leaf->numleafsurfaces;
 880                         if (svbspinsertoccluder)
 881                         {
 882                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 883                                 {
 884                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 885                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 886                                                 continue;
 887                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 888                                         surface = surfaces + surfaceindex;
 889                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 890                                                 continue;
 891                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 892                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 893                                         if (!castshadow)
 894                                                 continue;
 895                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 896                                         for (triangleindex = 0, t = surface->num_firsttriangle, e = info->model->surfmesh.data_element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 897                                         {
 898                                                 v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
 899                                                 v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
 900                                                 v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
 901                                                 VectorCopy(v[0], v2[0]);
 902                                                 VectorCopy(v[1], v2[1]);
 903                                                 VectorCopy(v[2], v2[2]);
 904                                                 if (insidebox || TriangleBBoxOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 905                                                         SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
 906                                         }
 907                                 }
 908                         }
 909                         else
 910                         {
 911                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 912                                 {
 913                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 914                                         surface = surfaces + surfaceindex;
 915                                         if(!surface->texture)
 916                                                 continue;
 917                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 918                                                 continue;
 919                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 920                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 921                                                 continue;
 922                                         addedtris = false;
 923                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 924                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 925                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 926                                         for (triangleindex = 0, t = surface->num_firsttriangle, e = info->model->surfmesh.data_element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 927                                         {
 928                                                 v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
 929                                                 v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
 930                                                 v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
 931                                                 VectorCopy(v[0], v2[0]);
 932                                                 VectorCopy(v[1], v2[1]);
 933                                                 VectorCopy(v[2], v2[2]);
 934                                                 if (!insidebox && !TriangleBBoxOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 935                                                         continue;
 936                                                 if (svbspactive && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
 937                                                         continue;
 938                                                 // we don't omit triangles from lighting even if they are
 939                                                 // backfacing, because when using shadowmapping they are often
 940                                                 // not fully occluded on the horizon of an edge
 941                                                 SETPVSBIT(info->outlighttrispvs, t);
 942                                                 addedtris = true;
 943                                                 if (castshadow)
 944                                                 {
 945                                                         if (noocclusion || (currentmaterialflags & MATERIALFLAG_NOCULLFACE))
 946                                                         {
 947                                                                 // if the material is double sided we
 948                                                                 // can't cull by direction
 949                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 950                                                         }
 951                                                         else if (frontsidecasting)
 952                                                         {
 953                                                                 // front side casting occludes backfaces,
 954                                                                 // so they are completely useless as both
 955                                                                 // casters and lit polygons
 956                                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 957                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 958                                                         }
 959                                                         else
 960                                                         {
 961                                                                 // back side casting does not occlude
 962                                                                 // anything so we can't cull lit polygons
 963                                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 964                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 965                                                         }
 966                                                 }
 967                                         }
 968                                         if (addedtris)
 969                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 970                                 }
 971                         }
 972                 }
 973         }
 974 }
 975
 976 static void R_Q1BSP_RecursiveGetLightInfo_BIH(r_q1bsp_getlightinfo_t *info, const bih_t *bih)
 977 {
 978         bih_leaf_t *leaf;
 979         bih_node_t *node;
 980         int nodenum;
 981         int axis;
 982         int surfaceindex;
 983         int t;
 984         int nodeleafindex;
 985         int currentmaterialflags;
 986         qbool castshadow;
 987         qbool noocclusion = info->noocclusion;
 988         qbool frontsidecasting = info->frontsidecasting;
 989         msurface_t *surface;
 990         const int *e;
 991         const vec_t *v[3];
 992         float v2[3][3];
 993         int nodestack[GETLIGHTINFO_MAXNODESTACK];
 994         int nodestackpos = 0;
 995         // note: because the BSP leafs are not in the BIH tree, the _BSP function
 996         // must be called to mark leafs visible for entity culling...
 997         // we start at the root node
 998         nodestack[nodestackpos++] = bih->rootnode;
 999         // we'll be done when the stack is empty
1000         while (nodestackpos)
1001         {
1002                 // pop one off the stack to process
1003                 nodenum = nodestack[--nodestackpos];
1004                 // node
1005                 node = bih->nodes + nodenum;
1006                 if (node->type == BIH_UNORDERED)
1007                 {
1008                         for (nodeleafindex = 0;nodeleafindex < BIH_MAXUNORDEREDCHILDREN && node->children[nodeleafindex] >= 0;nodeleafindex++)
1009                         {
1010                                 leaf = bih->leafs + node->children[nodeleafindex];
1011                                 if (leaf->type != BIH_RENDERTRIANGLE)
1012                                         continue;
1013 #if 1
1014                                 if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
1015                                         continue;
1016 #endif
1017 #if 1
1018                                 if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
1019                                         continue;
1020 #endif
1021                                 surfaceindex = leaf->surfaceindex;
1022                                 surface = info->model->data_surfaces + surfaceindex;
1023                                 currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
1024                                 castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
1025                                 t = leaf->itemindex;
1026                                 e = info->model->surfmesh.data_element3i + t * 3;
1027                                 v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
1028                                 v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
1029                                 v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
1030                                 VectorCopy(v[0], v2[0]);
1031                                 VectorCopy(v[1], v2[1]);
1032                                 VectorCopy(v[2], v2[2]);
1033                                 if (info->svbsp_insertoccluder)
1034                                 {
1035                                         if (castshadow)
1036                                                 SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
1037                                         continue;
1038                                 }
1039                                 if (info->svbsp_active && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
1040                                         continue;
1041                                 // we don't occlude triangles from lighting even
1042                                 // if they are backfacing, because when using
1043                                 // shadowmapping they are often not fully occluded
1044                                 // on the horizon of an edge
1045                                 SETPVSBIT(info->outlighttrispvs, t);
1046                                 if (castshadow)
1047                                 {
1048                                         if (noocclusion || (currentmaterialflags & MATERIALFLAG_NOCULLFACE))
1049                                         {
1050                                                 // if the material is double sided we
1051                                                 // can't cull by direction
1052                                                 SETPVSBIT(info->outshadowtrispvs, t);
1053                                         }
1054                                         else if (frontsidecasting)
1055                                         {
1056                                                 // front side casting occludes backfaces,
1057                                                 // so they are completely useless as both
1058                                                 // casters and lit polygons
1059                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1060                                                         SETPVSBIT(info->outshadowtrispvs, t);
1061                                         }
1062                                         else
1063                                         {
1064                                                 // back side casting does not occlude
1065                                                 // anything so we can't cull lit polygons
1066                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1067                                                         SETPVSBIT(info->outshadowtrispvs, t);
1068                                         }
1069                                 }
1070                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
1071                                 {
1072                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
1073                                         info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
1074                                 }
1075                         }
1076                 }
1077                 else
1078                 {
1079                         axis = node->type - BIH_SPLITX;
1080 #if 0
1081                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
1082                                 continue;
1083 #endif
1084 #if 0
1085                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
1086                                 continue;
1087 #endif
1088                         if (info->lightmins[axis] <= node->backmax)
1089                         {
1090                                 if (info->lightmaxs[axis] >= node->frontmin && nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
1091                                         nodestack[nodestackpos++] = node->front;
1092                                 nodestack[nodestackpos++] = node->back;
1093                                 continue;
1094                         }
1095                         else if (info->lightmaxs[axis] >= node->frontmin)
1096                         {
1097                                 nodestack[nodestackpos++] = node->front;
1098                                 continue;
1099                         }
1100                         else
1101                                 continue; // light falls between children, nothing here
1102                 }
1103         }
1104 }
1105
1106 static void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qbool use_svbsp)
1107 {
1108         extern cvar_t r_shadow_usebihculling;
1109         if (use_svbsp)
1110         {
1111                 float origin[3];
1112                 VectorCopy(info->relativelightorigin, origin);
1113                 r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<12);
1114                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1115                 info->svbsp_active = true;
1116                 info->svbsp_insertoccluder = true;
1117                 for (;;)
1118                 {
1119                         SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
1120                         R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1121                         // if that failed, retry with more nodes
1122                         if (r_svbsp.ranoutofnodes)
1123                         {
1124                                 // an upper limit is imposed
1125                                 if (r_svbsp.maxnodes >= 2<<22)
1126                                         break;
1127                                 r_svbsp.maxnodes *= 2;
1128                                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1129                                 //Mem_Free(r_svbsp.nodes);
1130                                 //r_svbsp.nodes = (svbsp_node_t*) Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
1131                         }
1132                         else
1133                                 break;
1134                 }
1135                 // now clear the visibility arrays because we need to redo it
1136                 info->outnumleafs = 0;
1137                 info->outnumsurfaces = 0;
1138                 memset(info->outleafpvs, 0, (info->model->brush.num_leafs + 7) >> 3);
1139                 memset(info->outsurfacepvs, 0, (info->model->num_surfaces + 7) >> 3);
1140                 memset(info->outshadowtrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1141                 memset(info->outlighttrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1142         }
1143         else
1144                 info->svbsp_active = false;
1145
1146         // we HAVE to mark the leaf the light is in as lit, because portals are
1147         // irrelevant to a leaf that the light source is inside of
1148         // (and they are all facing away, too)
1149         {
1150                 mnode_t *node = info->model->brush.data_nodes;
1151                 mleaf_t *leaf;
1152                 while (node->plane)
1153                         node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
1154                 leaf = (mleaf_t *)node;
1155                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
1156                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
1157                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
1158                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
1159                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
1160                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
1161                 if (info->outleafpvs)
1162                 {
1163                         int leafindex = leaf - info->model->brush.data_leafs;
1164                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
1165                         {
1166                                 SETPVSBIT(info->outleafpvs, leafindex);
1167                                 info->outleaflist[info->outnumleafs++] = leafindex;
1168                         }
1169                 }
1170         }
1171
1172         info->svbsp_insertoccluder = false;
1173         // use BIH culling on single leaf maps (generally this only happens if running a model as a map), otherwise use BSP culling to make use of vis data
1174         if (r_shadow_usebihculling.integer > 0 && (r_shadow_usebihculling.integer == 2 || info->model->brush.num_leafs == 1) && info->model->render_bih.leafs != NULL)
1175         {
1176                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, true);
1177                 R_Q1BSP_RecursiveGetLightInfo_BIH(info, &info->model->render_bih);
1178         }
1179         else
1180                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1181         // we're using temporary framedata memory, so this pointer will be invalid soon, clear it
1182         r_svbsp.nodes = NULL;
1183         if (developer_extra.integer && use_svbsp)
1184         {
1185                 Con_DPrintf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
1186                 Con_DPrintf("occluders: %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_occluders_accepted, r_svbsp.stat_occluders_rejected, r_svbsp.stat_occluders_fragments_accepted, r_svbsp.stat_occluders_fragments_rejected);
1187                 Con_DPrintf("queries  : %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_queries_accepted, r_svbsp.stat_queries_rejected, r_svbsp.stat_queries_fragments_accepted, r_svbsp.stat_queries_fragments_rejected);
1188         }
1189 }
1190
1191 static msurface_t *r_q1bsp_getlightinfo_surfaces;
1192
1193 static int R_Q1BSP_GetLightInfo_comparefunc(const void *ap, const void *bp)
1194 {
1195         int a = *(int*)ap;
1196         int b = *(int*)bp;
1197         const msurface_t *as = r_q1bsp_getlightinfo_surfaces + a;
1198         const msurface_t *bs = r_q1bsp_getlightinfo_surfaces + b;
1199         if (as->texture < bs->texture)
1200                 return -1;
1201         if (as->texture > bs->texture)
1202                 return 1;
1203         return a - b;
1204 }
1205
1206 extern cvar_t r_shadow_sortsurfaces;
1207
1208 void R_Mod_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, unsigned char *outshadowtrispvs, unsigned char *outlighttrispvs, unsigned char *visitingleafpvs, int numfrustumplanes, const mplane_t *frustumplanes, qbool noocclusion)
1209 {
1210         r_q1bsp_getlightinfo_t info;
1211         info.frontsidecasting = r_shadow_frontsidecasting.integer != 0;
1212         info.noocclusion = noocclusion || !info.frontsidecasting;
1213         VectorCopy(relativelightorigin, info.relativelightorigin);
1214         info.lightradius = lightradius;
1215         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
1216         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
1217         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
1218         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
1219         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
1220         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
1221         if (ent->model == NULL)
1222         {
1223                 VectorCopy(info.lightmins, outmins);
1224                 VectorCopy(info.lightmaxs, outmaxs);
1225                 *outnumleafspointer = 0;
1226                 *outnumsurfacespointer = 0;
1227                 return;
1228         }
1229         info.model = ent->model;
1230         info.outleaflist = outleaflist;
1231         info.outleafpvs = outleafpvs;
1232         info.outnumleafs = 0;
1233         info.visitingleafpvs = visitingleafpvs;
1234         info.outsurfacelist = outsurfacelist;
1235         info.outsurfacepvs = outsurfacepvs;
1236         info.outshadowtrispvs = outshadowtrispvs;
1237         info.outlighttrispvs = outlighttrispvs;
1238         info.outnumsurfaces = 0;
1239         info.numfrustumplanes = numfrustumplanes;
1240         info.frustumplanes = frustumplanes;
1241         VectorCopy(info.relativelightorigin, info.outmins);
1242         VectorCopy(info.relativelightorigin, info.outmaxs);
1243         memset(visitingleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1244         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1245         memset(outsurfacepvs, 0, (info.model->num_surfaces + 7) >> 3);
1246         memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1247         memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1248         if (info.model->brush.GetPVS && !info.noocclusion)
1249                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
1250         else
1251                 info.pvs = NULL;
1252         RSurf_ActiveModelEntity(r_refdef.scene.worldentity, false, false, false);
1253
1254         if (!info.noocclusion && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer && info.model->brush.data_portals)
1255         {
1256                 // use portal recursion for exact light volume culling, and exact surface checking
1257                 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, info.outshadowtrispvs, info.outlighttrispvs, info.visitingleafpvs);
1258         }
1259         else if (!info.noocclusion && r_shadow_realtime_dlight_portalculling.integer && info.model->brush.data_portals)
1260         {
1261                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
1262                 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, info.outshadowtrispvs, info.outlighttrispvs, info.visitingleafpvs);
1263         }
1264         else
1265         {
1266                 // recurse the bsp tree, checking leafs and surfaces for visibility
1267                 // optionally using svbsp for exact culling of compiled lights
1268                 // (or if the user enables dlight svbsp culling, which is mostly for
1269                 //  debugging not actual use)
1270                 R_Q1BSP_CallRecursiveGetLightInfo(&info, !info.noocclusion && (r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer) != 0);
1271         }
1272
1273         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveModelEntity
1274
1275         // limit combined leaf box to light boundaries
1276         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
1277         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
1278         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
1279         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
1280         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
1281         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
1282
1283         *outnumleafspointer = info.outnumleafs;
1284         *outnumsurfacespointer = info.outnumsurfaces;
1285
1286         // now sort surfaces by texture for faster rendering
1287         r_q1bsp_getlightinfo_surfaces = info.model->data_surfaces;
1288         if (r_shadow_sortsurfaces.integer)
1289                 qsort(info.outsurfacelist, info.outnumsurfaces, sizeof(*info.outsurfacelist), R_Q1BSP_GetLightInfo_comparefunc);
1290 }
1291
1292 void R_Mod_CompileShadowMap(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1293 {
1294         model_t *model = ent->model;
1295         msurface_t *surface;
1296         int surfacelistindex;
1297         int sidetotals[6] = { 0, 0, 0, 0, 0, 0 }, sidemasks = 0;
1298         int i;
1299         // FIXME: the sidetotals code incorrectly assumes that static_meshchain is
1300         // a single mesh - to prevent that from crashing (sideoffsets, sidetotals
1301         // exceeding the number of triangles in a single mesh) we have to make sure
1302         // that we make only a single mesh - so over-estimate the size of the mesh
1303         // to match the model.
1304         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Begin(r_main_mempool, model->surfmesh.num_vertices, model->surfmesh.num_triangles);
1305         R_Shadow_PrepareShadowSides(model->surfmesh.num_triangles);
1306         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1307         {
1308                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1309                 sidemasks |= R_Shadow_ChooseSidesFromBox(surface->num_firsttriangle, surface->num_triangles, model->surfmesh.data_vertex3f, model->surfmesh.data_element3i, &r_shadow_compilingrtlight->matrix_worldtolight, relativelightorigin, relativelightdirection, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs, surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW ? NULL : sidetotals);
1310         }
1311         R_Shadow_ShadowMapFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, model->surfmesh.data_vertex3f, model->surfmesh.data_element3i, numshadowsides, sidetotals, shadowsides, shadowsideslist);
1312         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Finish(r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, true);
1313         r_shadow_compilingrtlight->static_shadowmap_receivers &= sidemasks;
1314         for(i = 0;i<6;i++)
1315                 if(!sidetotals[i])
1316                         r_shadow_compilingrtlight->static_shadowmap_casters &= ~(1 << i);
1317 }
1318
1319 #define RSURF_MAX_BATCHSURFACES 8192
1320
1321 static const msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
1322
1323 void R_Mod_DrawShadowMap(int side, entity_render_t *ent, const vec3_t relativelightorigin, const vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const unsigned char *surfacesides, const vec3_t lightmins, const vec3_t lightmaxs)
1324 {
1325         model_t *model = ent->model;
1326         const msurface_t *surface;
1327         int modelsurfacelistindex, batchnumsurfaces;
1328         // check the box in modelspace, it was already checked in worldspace
1329         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1330                 return;
1331         R_FrameData_SetMark();
1332         // identify lit faces within the bounding box
1333         for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1334         {
1335                 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1336                 if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
1337                         continue;
1338                 rsurface.texture = R_GetCurrentTexture(surface->texture);
1339                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1340                         continue;
1341                 if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1342                         continue;
1343                 r_refdef.stats[r_stat_lights_dynamicshadowtriangles] += surface->num_triangles;
1344                 r_refdef.stats[r_stat_lights_shadowtriangles] += surface->num_triangles;
1345                 batchsurfacelist[0] = surface;
1346                 batchnumsurfaces = 1;
1347                 while(++modelsurfacelistindex < modelnumsurfaces && batchnumsurfaces < RSURF_MAX_BATCHSURFACES)
1348                 {
1349                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1350                         if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
1351                                 continue;
1352                         if (surface->texture != batchsurfacelist[0]->texture)
1353                                 break;
1354                         if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1355                                 continue;
1356                         r_refdef.stats[r_stat_lights_dynamicshadowtriangles] += surface->num_triangles;
1357                         r_refdef.stats[r_stat_lights_shadowtriangles] += surface->num_triangles;
1358                         batchsurfacelist[batchnumsurfaces++] = surface;
1359                 }
1360                 --modelsurfacelistindex;
1361                 GL_CullFace(rsurface.texture->currentmaterialflags & MATERIALFLAG_NOCULLFACE ? GL_NONE : r_refdef.view.cullface_back);
1362                 RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | BATCHNEED_ALLOWMULTIDRAW, batchnumsurfaces, batchsurfacelist);
1363                 R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
1364                 RSurf_DrawBatch();
1365         }
1366         R_FrameData_ReturnToMark();
1367 }
1368
1369 #define BATCHSIZE 1024
1370
1371 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
1372 {
1373         int i, j, endsurface;
1374         texture_t *t;
1375         const msurface_t *surface;
1376         R_FrameData_SetMark();
1377         // note: in practice this never actually receives batches
1378         R_Shadow_RenderMode_Begin();
1379         R_Shadow_RenderMode_ActiveLight(rtlight);
1380         R_Shadow_RenderMode_Lighting(true, rtlight->shadowmapatlassidesize != 0, (ent->flags & RENDER_NOSELFSHADOW) != 0);
1381         R_Shadow_SetupEntityLight(ent);
1382         for (i = 0;i < numsurfaces;i = j)
1383         {
1384                 j = i + 1;
1385                 surface = rsurface.modelsurfaces + surfacelist[i];
1386                 t = surface->texture;
1387                 rsurface.texture = R_GetCurrentTexture(t);
1388                 endsurface = min(j + BATCHSIZE, numsurfaces);
1389                 for (j = i;j < endsurface;j++)
1390                 {
1391                         surface = rsurface.modelsurfaces + surfacelist[j];
1392                         if (t != surface->texture)
1393                                 break;
1394                         R_Shadow_RenderLighting(1, &surface);
1395                 }
1396         }
1397         R_Shadow_RenderMode_End();
1398         R_FrameData_ReturnToMark();
1399 }
1400
1401 extern qbool r_shadow_usingdeferredprepass;
1402 void R_Mod_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *lighttrispvs)
1403 {
1404         model_t *model = ent->model;
1405         const msurface_t *surface;
1406         int i, k, kend, l, endsurface, batchnumsurfaces, texturenumsurfaces;
1407         const msurface_t **texturesurfacelist;
1408         texture_t *tex;
1409         CHECKGLERROR
1410         R_FrameData_SetMark();
1411         // this is a double loop because non-visible surface skipping has to be
1412         // fast, and even if this is not the world model (and hence no visibility
1413         // checking) the input surface list and batch buffer are different formats
1414         // so some processing is necessary.  (luckily models have few surfaces)
1415         for (i = 0;i < numsurfaces;)
1416         {
1417                 batchnumsurfaces = 0;
1418                 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1419                 if (ent == r_refdef.scene.worldentity)
1420                 {
1421                         for (;i < endsurface;i++)
1422                                 if (r_refdef.viewcache.world_surfacevisible[surfacelist[i]])
1423                                         batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1424                 }
1425                 else
1426                 {
1427                         for (;i < endsurface;i++)
1428                                 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1429                 }
1430                 if (!batchnumsurfaces)
1431                         continue;
1432                 for (k = 0;k < batchnumsurfaces;k = kend)
1433                 {
1434                         surface = batchsurfacelist[k];
1435                         tex = surface->texture;
1436                         rsurface.texture = R_GetCurrentTexture(tex);
1437                         // gather surfaces into a batch range
1438                         for (kend = k;kend < batchnumsurfaces && tex == batchsurfacelist[kend]->texture;kend++)
1439                                 ;
1440                         // now figure out what to do with this particular range of surfaces
1441                         // VorteX: added MATERIALFLAG_NORTLIGHT
1442                         if ((rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_NORTLIGHT)) != MATERIALFLAG_WALL)
1443                                 continue;
1444                         if (r_fb.water.renderingscene && (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA)))
1445                                 continue;
1446                         if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1447                         {
1448                                 vec3_t tempcenter, center;
1449                                 for (l = k;l < kend;l++)
1450                                 {
1451                                         surface = batchsurfacelist[l];
1452                                         if (r_transparent_sortsurfacesbynearest.integer)
1453                                         {
1454                                                 tempcenter[0] = bound(surface->mins[0], rsurface.localvieworigin[0], surface->maxs[0]);
1455                                                 tempcenter[1] = bound(surface->mins[1], rsurface.localvieworigin[1], surface->maxs[1]);
1456                                                 tempcenter[2] = bound(surface->mins[2], rsurface.localvieworigin[2], surface->maxs[2]);
1457                                         }
1458                                         else
1459                                         {
1460                                                 tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1461                                                 tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1462                                                 tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1463                                         }
1464                                         Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
1465                                         if (ent->transparent_offset) // transparent offset
1466                                         {
1467                                                 center[0] += r_refdef.view.forward[0]*ent->transparent_offset;
1468                                                 center[1] += r_refdef.view.forward[1]*ent->transparent_offset;
1469                                                 center[2] += r_refdef.view.forward[2]*ent->transparent_offset;
1470                                         }
1471                                         R_MeshQueue_AddTransparent((rsurface.entity->flags & RENDER_WORLDOBJECT) ? TRANSPARENTSORT_SKY : ((rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST) ? TRANSPARENTSORT_HUD : rsurface.texture->transparentsort), center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface.modelsurfaces, rsurface.rtlight);
1472                                 }
1473                                 continue;
1474                         }
1475                         if (r_shadow_usingdeferredprepass)
1476                                 continue;
1477                         texturenumsurfaces = kend - k;
1478                         texturesurfacelist = batchsurfacelist + k;
1479                         R_Shadow_RenderLighting(texturenumsurfaces, texturesurfacelist);
1480                 }
1481         }
1482         R_FrameData_ReturnToMark();
1483 }
1484
1485 //Made by [515]
1486 static void R_ReplaceWorldTexture_f(cmd_state_t *cmd)
1487 {
1488         model_t         *m;
1489         texture_t       *t;
1490         int                     i;
1491         const char      *r, *newt;
1492         skinframe_t *skinframe;
1493         if (!r_refdef.scene.worldmodel)
1494         {
1495                 Con_Printf("There is no worldmodel\n");
1496                 return;
1497         }
1498         m = r_refdef.scene.worldmodel;
1499
1500         if(Cmd_Argc(cmd) < 2)
1501         {
1502                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1503                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1504                 return;
1505         }
1506         if(!cl.islocalgame || !cl.worldmodel)
1507         {
1508                 Con_Print("This command works only in singleplayer\n");
1509                 return;
1510         }
1511         r = Cmd_Argv(cmd, 1);
1512         newt = Cmd_Argv(cmd, 2);
1513         if(!newt[0])
1514                 newt = r;
1515         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1516         {
1517                 if(/*t->width && !strcasecmp(t->name, r)*/ matchpattern( t->name, r, true ) )
1518                 {
1519                         if ((skinframe = R_SkinFrame_LoadExternal(newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PICMIP, true, false)))
1520                         {
1521 //                              t->skinframes[0] = skinframe;
1522                                 t->currentskinframe = skinframe;
1523                                 Con_Printf("%s replaced with %s\n", r, newt);
1524                         }
1525                         else
1526                         {
1527                                 Con_Printf("%s was not found\n", newt);
1528                                 return;
1529                         }
1530                 }
1531         }
1532 }
1533
1534 //Made by [515]
1535 static void R_ListWorldTextures_f(cmd_state_t *cmd)
1536 {
1537         model_t         *m;
1538         texture_t       *t;
1539         int                     i;
1540         if (!r_refdef.scene.worldmodel)
1541         {
1542                 Con_Printf("There is no worldmodel\n");
1543                 return;
1544         }
1545         m = r_refdef.scene.worldmodel;
1546
1547         Con_Print("Worldmodel textures :\n");
1548         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1549                 if (t->name[0] && strcasecmp(t->name, "NO TEXTURE FOUND"))
1550                         Con_Printf("%s\n", t->name);
1551 }
1552
1553 #if 0
1554 static void gl_surf_start(void)
1555 {
1556 }
1557
1558 static void gl_surf_shutdown(void)
1559 {
1560 }
1561
1562 static void gl_surf_newmap(void)
1563 {
1564 }
1565 #endif
1566
1567 void GL_Surf_Init(void)
1568 {
1569
1570         Cvar_RegisterVariable(&r_ambient);
1571         Cvar_RegisterVariable(&r_lockpvs);
1572         Cvar_RegisterVariable(&r_lockvisibility);
1573         Cvar_RegisterVariable(&r_useportalculling);
1574         Cvar_RegisterVariable(&r_usesurfaceculling);
1575         Cvar_RegisterVariable(&r_vis_trace);
1576         Cvar_RegisterVariable(&r_vis_trace_samples);
1577         Cvar_RegisterVariable(&r_vis_trace_delay);
1578         Cvar_RegisterVariable(&r_vis_trace_eyejitter);
1579         Cvar_RegisterVariable(&r_vis_trace_enlarge);
1580         Cvar_RegisterVariable(&r_vis_trace_expand);
1581         Cvar_RegisterVariable(&r_vis_trace_pad);
1582         Cvar_RegisterVariable(&r_vis_trace_surfaces);
1583         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1584
1585         Cmd_AddCommand(CF_CLIENT, "r_replacemaptexture", R_ReplaceWorldTexture_f, "override a map texture for testing purposes");
1586         Cmd_AddCommand(CF_CLIENT, "r_listmaptextures", R_ListWorldTextures_f, "list all textures used by the current map");
1587
1588         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1589 }
1590