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 = {CVAR_CLIENT, "r_ambient", "0", "brightens map, value is 0-128"};
  29 cvar_t r_lockpvs = {CVAR_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 = {CVAR_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 = {CVAR_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 = {CVAR_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 = {CVAR_CLIENT, "r_vis_trace", "0", "test if each portal or leaf is visible using tracelines"};
  34 cvar_t r_vis_trace_samples = {CVAR_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 = {CVAR_CLIENT, "r_vis_trace_delay", "1", "keep a portal visible for this many seconds"};
  36 cvar_t r_vis_trace_eyejitter = {CVAR_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 = {CVAR_CLIENT, "r_vis_trace_enlarge", "0", "make portal bounds bigger for tests by (1+this)*size"};
  38 cvar_t r_vis_trace_expand = {CVAR_CLIENT, "r_vis_trace_expand", "0", "make portal bounds bigger for tests by this many units"};
  39 cvar_t r_vis_trace_pad = {CVAR_CLIENT, "r_vis_trace_pad", "8", "accept traces that hit within this many units of the portal"};
  40 cvar_t r_vis_trace_surfaces = {CVAR_CLIENT, "r_vis_trace_surfaces", "0", "also use tracelines to cull surfaces"};
  41 cvar_t r_q3bsp_renderskydepth = {CVAR_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)
  51 {
  52         int smax, tmax, i, size, size3, maps, l;
  53         int *bl, scale;
  54         unsigned char *lightmap, *out, *stain;
  55         dp_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);
 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);
 173         }
 174 }
 175
 176 static void R_StainNode (mnode_t *node, dp_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         dp_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         qboolean 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         dp_model_t *model = r_refdef.scene.worldmodel;
 387         if (model == NULL)
 388                 return;
 389         for (leafnum = 0;leafnum < r_refdef.scene.worldmodel->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 = r_refdef.scene.worldmodel->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         int surfaceindexstart;
 415         int surfaceindexend;
 416         unsigned char *surfacevisible;
 417         msurface_t *surfaces;
 418         dp_model_t *model = r_refdef.scene.worldmodel;
 419         if (!model)
 420                 return;
 421         if (r_trippy.integer)
 422                 return;
 423         if (r_usesurfaceculling.integer < 1)
 424                 return;
 425         surfaceindexstart = model->firstmodelsurface;
 426         surfaceindexend = surfaceindexstart + model->nummodelsurfaces;
 427         surfaces = model->data_surfaces;
 428         surfacevisible = r_refdef.viewcache.world_surfacevisible;
 429         for (surfaceindex = surfaceindexstart; surfaceindex < surfaceindexend; surfaceindex++)
 430         {
 431                 if (surfacevisible[surfaceindex])
 432                 {
 433                         if (R_CullBox(surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs)
 434                          || (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)))
 435                                 surfacevisible[surfaceindex] = 0;
 436                 }
 437         }
 438 }
 439
 440 void R_View_WorldVisibility(qboolean forcenovis)
 441 {
 442         int i, j, *mark;
 443         mleaf_t *leaf;
 444         mleaf_t *viewleaf;
 445         dp_model_t *model = r_refdef.scene.worldmodel;
 446
 447         if (!model)
 448                 return;
 449
 450         if (r_refdef.view.usecustompvs)
 451         {
 452                 // clear the visible surface and leaf flags arrays
 453                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 454                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 455                 r_refdef.viewcache.world_novis = false;
 456
 457                 // simply cull each marked leaf to the frustum (view pyramid)
 458                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 459                 {
 460                         // if leaf is in current pvs and on the screen, mark its surfaces
 461                         if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 462                         {
 463                                 r_refdef.stats[r_stat_world_leafs]++;
 464                                 r_refdef.viewcache.world_leafvisible[j] = true;
 465                                 if (leaf->numleafsurfaces)
 466                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 467                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 468                         }
 469                 }
 470                 R_View_WorldVisibility_CullSurfaces();
 471                 return;
 472         }
 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 (!r_lockvisibility.integer)
 481         {
 482                 // clear the visible surface and leaf flags arrays
 483                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 484                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 485
 486                 r_refdef.viewcache.world_novis = false;
 487
 488                 // if floating around in the void (no pvs data available, and no
 489                 // portals available), simply use all on-screen leafs.
 490                 if (!viewleaf || viewleaf->clusterindex < 0 || forcenovis || !r_refdef.view.usevieworiginculling)
 491                 {
 492                         // no visibility method: (used when floating around in the void)
 493                         // simply cull each leaf to the frustum (view pyramid)
 494                         // similar to quake's RecursiveWorldNode but without cache misses
 495                         r_refdef.viewcache.world_novis = true;
 496                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 497                         {
 498                                 if (leaf->clusterindex < 0)
 499                                         continue;
 500                                 // if leaf is in current pvs and on the screen, mark its surfaces
 501                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 502                                 {
 503                                         r_refdef.stats[r_stat_world_leafs]++;
 504                                         r_refdef.viewcache.world_leafvisible[j] = true;
 505                                         if (leaf->numleafsurfaces)
 506                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 507                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 508                                 }
 509                         }
 510                 }
 511                 // just check if each leaf in the PVS is on screen
 512                 // (unless portal culling is enabled)
 513                 else if (!model->brush.data_portals || r_useportalculling.integer < 1 || (r_useportalculling.integer < 2 && !r_novis.integer))
 514                 {
 515                         // pvs method:
 516                         // simply check if each leaf is in the Potentially Visible Set,
 517                         // and cull to frustum (view pyramid)
 518                         // similar to quake's RecursiveWorldNode but without cache misses
 519                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 520                         {
 521                                 if (leaf->clusterindex < 0)
 522                                         continue;
 523                                 // if leaf is in current pvs and on the screen, mark its surfaces
 524                                 if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 525                                 {
 526                                         r_refdef.stats[r_stat_world_leafs]++;
 527                                         r_refdef.viewcache.world_leafvisible[j] = true;
 528                                         if (leaf->numleafsurfaces)
 529                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 530                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 531                                 }
 532                         }
 533                 }
 534                 // if desired use a recursive portal flow, culling each portal to
 535                 // frustum and checking if the leaf the portal leads to is in the pvs
 536                 else
 537                 {
 538                         int leafstackpos;
 539                         mportal_t *p;
 540                         mleaf_t *leafstack[8192];
 541                         vec3_t cullmins, cullmaxs;
 542                         float cullbias = r_nearclip.value * 2.0f; // the nearclip plane can easily end up culling portals in certain perfectly-aligned views, causing view blackouts
 543                         // simple-frustum portal method:
 544                         // follows portals leading outward from viewleaf, does not venture
 545                         // offscreen or into leafs that are not visible, faster than
 546                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 547                         // often culls some surfaces that pvs alone would miss
 548                         // (such as a room in pvs that is hidden behind a wall, but the
 549                         //  passage leading to the room is off-screen)
 550                         leafstack[0] = viewleaf;
 551                         leafstackpos = 1;
 552                         while (leafstackpos)
 553                         {
 554                                 leaf = leafstack[--leafstackpos];
 555                                 if (r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs])
 556                                         continue;
 557                                 if (leaf->clusterindex < 0)
 558                                         continue;
 559                                 r_refdef.stats[r_stat_world_leafs]++;
 560                                 r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 561                                 // mark any surfaces bounding this leaf
 562                                 if (leaf->numleafsurfaces)
 563                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 564                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 565                                 // follow portals into other leafs
 566                                 // the checks are:
 567                                 // the leaf has not been visited yet
 568                                 // and the leaf is visible in the pvs
 569                                 // the portal polygon's bounding box is on the screen
 570                                 for (p = leaf->portals;p;p = p->next)
 571                                 {
 572                                         r_refdef.stats[r_stat_world_portals]++;
 573                                         if (r_refdef.viewcache.world_leafvisible[p->past - model->brush.data_leafs])
 574                                                 continue;
 575                                         if (!CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, p->past->clusterindex))
 576                                                 continue;
 577                                         cullmins[0] = p->mins[0] - cullbias;
 578                                         cullmins[1] = p->mins[1] - cullbias;
 579                                         cullmins[2] = p->mins[2] - cullbias;
 580                                         cullmaxs[0] = p->maxs[0] + cullbias;
 581                                         cullmaxs[1] = p->maxs[1] + cullbias;
 582                                         cullmaxs[2] = p->maxs[2] + cullbias;
 583                                         if (R_CullBox(cullmins, cullmaxs))
 584                                                 continue;
 585                                         if (r_vis_trace.integer)
 586                                         {
 587                                                 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))
 588                                                         p->tracetime = host.realtime;
 589                                                 if (host.realtime - p->tracetime > r_vis_trace_delay.value)
 590                                                         continue;
 591                                         }
 592                                         if (leafstackpos >= (int)(sizeof(leafstack) / sizeof(leafstack[0])))
 593                                                 break;
 594                                         leafstack[leafstackpos++] = p->past;
 595                                 }
 596                         }
 597                 }
 598                 R_View_WorldVisibility_CullSurfaces();
 599         }
 600 }
 601
 602 void R_Mod_DrawSky(entity_render_t *ent)
 603 {
 604         if (ent->model == NULL)
 605                 return;
 606         R_DrawModelSurfaces(ent, true, true, false, false, false, false);
 607 }
 608
 609 void R_Mod_DrawAddWaterPlanes(entity_render_t *ent)
 610 {
 611         int i, j, n, flagsmask;
 612         dp_model_t *model = ent->model;
 613         msurface_t *surfaces;
 614         if (model == NULL)
 615                 return;
 616
 617         RSurf_ActiveModelEntity(ent, true, false, false);
 618
 619         surfaces = model->data_surfaces;
 620         flagsmask = MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA;
 621
 622         // add visible surfaces to draw list
 623         if (ent == r_refdef.scene.worldentity)
 624         {
 625                 for (i = 0;i < model->nummodelsurfaces;i++)
 626                 {
 627                         j = model->sortedmodelsurfaces[i];
 628                         if (r_refdef.viewcache.world_surfacevisible[j])
 629                                 if (surfaces[j].texture->basematerialflags & flagsmask)
 630                                         R_Water_AddWaterPlane(surfaces + j, 0);
 631                 }
 632         }
 633         else
 634         {
 635                 if(ent->entitynumber >= MAX_EDICTS) // && CL_VM_TransformView(ent->entitynumber - MAX_EDICTS, NULL, NULL, NULL))
 636                         n = ent->entitynumber;
 637                 else
 638                         n = 0;
 639                 for (i = 0;i < model->nummodelsurfaces;i++)
 640                 {
 641                         j = model->sortedmodelsurfaces[i];
 642                         if (surfaces[j].texture->basematerialflags & flagsmask)
 643                                 R_Water_AddWaterPlane(surfaces + j, n);
 644                 }
 645         }
 646         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveModelEntity
 647 }
 648
 649 void R_Mod_Draw(entity_render_t *ent)
 650 {
 651         dp_model_t *model = ent->model;
 652         if (model == NULL)
 653                 return;
 654         R_DrawModelSurfaces(ent, false, true, false, false, false, false);
 655 }
 656
 657 void R_Mod_DrawDepth(entity_render_t *ent)
 658 {
 659         dp_model_t *model = ent->model;
 660         if (model == NULL || model->surfmesh.isanimated)
 661                 return;
 662         GL_ColorMask(0,0,0,0);
 663         GL_Color(1,1,1,1);
 664         GL_DepthTest(true);
 665         GL_BlendFunc(GL_ONE, GL_ZERO);
 666         GL_DepthMask(true);
 667 //      R_Mesh_ResetTextureState();
 668         R_DrawModelSurfaces(ent, false, false, true, false, false, false);
 669         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
 670 }
 671
 672 void R_Mod_DrawDebug(entity_render_t *ent)
 673 {
 674         if (ent->model == NULL)
 675                 return;
 676         R_DrawModelSurfaces(ent, false, false, false, true, false, false);
 677 }
 678
 679 void R_Mod_DrawPrepass(entity_render_t *ent)
 680 {
 681         dp_model_t *model = ent->model;
 682         if (model == NULL)
 683                 return;
 684         R_DrawModelSurfaces(ent, false, true, false, false, true, false);
 685 }
 686
 687 typedef struct r_q1bsp_getlightinfo_s
 688 {
 689         dp_model_t *model;
 690         vec3_t relativelightorigin;
 691         float lightradius;
 692         int *outleaflist;
 693         unsigned char *outleafpvs;
 694         int outnumleafs;
 695         unsigned char *visitingleafpvs;
 696         int *outsurfacelist;
 697         unsigned char *outsurfacepvs;
 698         unsigned char *tempsurfacepvs;
 699         unsigned char *outshadowtrispvs;
 700         unsigned char *outlighttrispvs;
 701         int outnumsurfaces;
 702         vec3_t outmins;
 703         vec3_t outmaxs;
 704         vec3_t lightmins;
 705         vec3_t lightmaxs;
 706         const unsigned char *pvs;
 707         qboolean svbsp_active;
 708         qboolean svbsp_insertoccluder;
 709         qboolean noocclusion; // avoids PVS culling
 710         qboolean frontsidecasting; // casts shadows from surfaces facing the light (otherwise ones facing away)
 711         int numfrustumplanes;
 712         const mplane_t *frustumplanes;
 713 }
 714 r_q1bsp_getlightinfo_t;
 715
 716 #define GETLIGHTINFO_MAXNODESTACK 4096
 717
 718 static void R_Q1BSP_RecursiveGetLightInfo_BSP(r_q1bsp_getlightinfo_t *info, qboolean skipsurfaces)
 719 {
 720         // nodestack
 721         mnode_t *nodestack[GETLIGHTINFO_MAXNODESTACK];
 722         int nodestackpos = 0;
 723         // node processing
 724         mplane_t *plane;
 725         mnode_t *node;
 726         int sides;
 727         // leaf processing
 728         mleaf_t *leaf;
 729         const msurface_t *surface;
 730         const msurface_t *surfaces = info->model->data_surfaces;
 731         int numleafsurfaces;
 732         int leafsurfaceindex;
 733         int surfaceindex;
 734         int triangleindex, t;
 735         int currentmaterialflags;
 736         qboolean castshadow;
 737         const int *e;
 738         const vec_t *v[3];
 739         float v2[3][3];
 740         qboolean insidebox;
 741         qboolean noocclusion = info->noocclusion;
 742         qboolean frontsidecasting = info->frontsidecasting;
 743         qboolean svbspactive = info->svbsp_active;
 744         qboolean svbspinsertoccluder = info->svbsp_insertoccluder;
 745         const int *leafsurfaceindices;
 746         qboolean addedtris;
 747         int i;
 748         mportal_t *portal;
 749         static float points[128][3];
 750         // push the root node onto our nodestack
 751         nodestack[nodestackpos++] = info->model->brush.data_nodes;
 752         // we'll be done when the nodestack is empty
 753         while (nodestackpos)
 754         {
 755                 // get a node from the stack to process
 756                 node = nodestack[--nodestackpos];
 757                 // is it a node or a leaf?
 758                 plane = node->plane;
 759                 if (plane)
 760                 {
 761                         // node
 762 #if 0
 763                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 764                                 continue;
 765 #endif
 766 #if 0
 767                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
 768                                 continue;
 769 #endif
 770                         // axial planes can be processed much more quickly
 771                         if (plane->type < 3)
 772                         {
 773                                 // axial plane
 774                                 if (info->lightmins[plane->type] > plane->dist)
 775                                         nodestack[nodestackpos++] = node->children[0];
 776                                 else if (info->lightmaxs[plane->type] < plane->dist)
 777                                         nodestack[nodestackpos++] = node->children[1];
 778                                 else
 779                                 {
 780                                         // recurse front side first because the svbsp building prefers it
 781                                         if (info->relativelightorigin[plane->type] >= plane->dist)
 782                                         {
 783                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 784                                                         nodestack[nodestackpos++] = node->children[0];
 785                                                 nodestack[nodestackpos++] = node->children[1];
 786                                         }
 787                                         else
 788                                         {
 789                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 790                                                         nodestack[nodestackpos++] = node->children[1];
 791                                                 nodestack[nodestackpos++] = node->children[0];
 792                                         }
 793                                 }
 794                         }
 795                         else
 796                         {
 797                                 // sloped plane
 798                                 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 799                                 switch (sides)
 800                                 {
 801                                 default:
 802                                         continue; // ERROR: NAN bounding box!
 803                                 case 1:
 804                                         nodestack[nodestackpos++] = node->children[0];
 805                                         break;
 806                                 case 2:
 807                                         nodestack[nodestackpos++] = node->children[1];
 808                                         break;
 809                                 case 3:
 810                                         // recurse front side first because the svbsp building prefers it
 811                                         if (PlaneDist(info->relativelightorigin, plane) >= 0)
 812                                         {
 813                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 814                                                         nodestack[nodestackpos++] = node->children[0];
 815                                                 nodestack[nodestackpos++] = node->children[1];
 816                                         }
 817                                         else
 818                                         {
 819                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
 820                                                         nodestack[nodestackpos++] = node->children[1];
 821                                                 nodestack[nodestackpos++] = node->children[0];
 822                                         }
 823                                         break;
 824                                 }
 825                         }
 826                 }
 827                 else
 828                 {
 829                         // leaf
 830                         leaf = (mleaf_t *)node;
 831 #if 1
 832                         if (!info->noocclusion && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
 833                                 continue;
 834 #endif
 835 #if 1
 836                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
 837                                 continue;
 838 #endif
 839 #if 1
 840                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
 841                                 continue;
 842 #endif
 843
 844                         if (svbspactive)
 845                         {
 846                                 // we can occlusion test the leaf by checking if all of its portals
 847                                 // are occluded (unless the light is in this leaf - but that was
 848                                 // already handled by the caller)
 849                                 for (portal = leaf->portals;portal;portal = portal->next)
 850                                 {
 851                                         for (i = 0;i < portal->numpoints;i++)
 852                                                 VectorCopy(portal->points[i].position, points[i]);
 853                                         if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
 854                                                 break;
 855                                 }
 856                                 if (leaf->portals && portal == NULL)
 857                                         continue; // no portals of this leaf visible
 858                         }
 859
 860                         // add this leaf to the reduced light bounds
 861                         info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 862                         info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 863                         info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 864                         info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 865                         info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 866                         info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 867
 868                         // mark this leaf as being visible to the light
 869                         if (info->outleafpvs)
 870                         {
 871                                 int leafindex = leaf - info->model->brush.data_leafs;
 872                                 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 873                                 {
 874                                         SETPVSBIT(info->outleafpvs, leafindex);
 875                                         info->outleaflist[info->outnumleafs++] = leafindex;
 876                                 }
 877                         }
 878
 879                         // when using BIH, we skip the surfaces here
 880                         if (skipsurfaces)
 881                                 continue;
 882
 883                         // iterate the surfaces linked by this leaf and check their triangles
 884                         leafsurfaceindices = leaf->firstleafsurface;
 885                         numleafsurfaces = leaf->numleafsurfaces;
 886                         if (svbspinsertoccluder)
 887                         {
 888                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 889                                 {
 890                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 891                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 892                                                 continue;
 893                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 894                                         surface = surfaces + surfaceindex;
 895                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 896                                                 continue;
 897                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 898                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 899                                         if (!castshadow)
 900                                                 continue;
 901                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 902                                         for (triangleindex = 0, t = surface->num_firsttriangle, e = info->model->surfmesh.data_element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 903                                         {
 904                                                 v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
 905                                                 v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
 906                                                 v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
 907                                                 VectorCopy(v[0], v2[0]);
 908                                                 VectorCopy(v[1], v2[1]);
 909                                                 VectorCopy(v[2], v2[2]);
 910                                                 if (insidebox || TriangleBBoxOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 911                                                         SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
 912                                         }
 913                                 }
 914                         }
 915                         else
 916                         {
 917                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 918                                 {
 919                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 920                                         surface = surfaces + surfaceindex;
 921                                         if(!surface->texture)
 922                                                 continue;
 923                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 924                                                 continue;
 925                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 926                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 927                                                 continue;
 928                                         addedtris = false;
 929                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 930                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 931                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 932                                         for (triangleindex = 0, t = surface->num_firsttriangle, e = info->model->surfmesh.data_element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 933                                         {
 934                                                 v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
 935                                                 v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
 936                                                 v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
 937                                                 VectorCopy(v[0], v2[0]);
 938                                                 VectorCopy(v[1], v2[1]);
 939                                                 VectorCopy(v[2], v2[2]);
 940                                                 if (!insidebox && !TriangleBBoxOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 941                                                         continue;
 942                                                 if (svbspactive && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
 943                                                         continue;
 944                                                 // we don't omit triangles from lighting even if they are
 945                                                 // backfacing, because when using shadowmapping they are often
 946                                                 // not fully occluded on the horizon of an edge
 947                                                 SETPVSBIT(info->outlighttrispvs, t);
 948                                                 addedtris = true;
 949                                                 if (castshadow)
 950                                                 {
 951                                                         if (noocclusion || (currentmaterialflags & MATERIALFLAG_NOCULLFACE))
 952                                                         {
 953                                                                 // if the material is double sided we
 954                                                                 // can't cull by direction
 955                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 956                                                         }
 957                                                         else if (frontsidecasting)
 958                                                         {
 959                                                                 // front side casting occludes backfaces,
 960                                                                 // so they are completely useless as both
 961                                                                 // casters and lit polygons
 962                                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 963                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 964                                                         }
 965                                                         else
 966                                                         {
 967                                                                 // back side casting does not occlude
 968                                                                 // anything so we can't cull lit polygons
 969                                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 970                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 971                                                         }
 972                                                 }
 973                                         }
 974                                         if (addedtris)
 975                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 976                                 }
 977                         }
 978                 }
 979         }
 980 }
 981
 982 static void R_Q1BSP_RecursiveGetLightInfo_BIH(r_q1bsp_getlightinfo_t *info, const bih_t *bih)
 983 {
 984         bih_leaf_t *leaf;
 985         bih_node_t *node;
 986         int nodenum;
 987         int axis;
 988         int surfaceindex;
 989         int t;
 990         int nodeleafindex;
 991         int currentmaterialflags;
 992         qboolean castshadow;
 993         qboolean noocclusion = info->noocclusion;
 994         qboolean frontsidecasting = info->frontsidecasting;
 995         msurface_t *surface;
 996         const int *e;
 997         const vec_t *v[3];
 998         float v2[3][3];
 999         int nodestack[GETLIGHTINFO_MAXNODESTACK];
1000         int nodestackpos = 0;
1001         // note: because the BSP leafs are not in the BIH tree, the _BSP function
1002         // must be called to mark leafs visible for entity culling...
1003         // we start at the root node
1004         nodestack[nodestackpos++] = bih->rootnode;
1005         // we'll be done when the stack is empty
1006         while (nodestackpos)
1007         {
1008                 // pop one off the stack to process
1009                 nodenum = nodestack[--nodestackpos];
1010                 // node
1011                 node = bih->nodes + nodenum;
1012                 if (node->type == BIH_UNORDERED)
1013                 {
1014                         for (nodeleafindex = 0;nodeleafindex < BIH_MAXUNORDEREDCHILDREN && node->children[nodeleafindex] >= 0;nodeleafindex++)
1015                         {
1016                                 leaf = bih->leafs + node->children[nodeleafindex];
1017                                 if (leaf->type != BIH_RENDERTRIANGLE)
1018                                         continue;
1019 #if 1
1020                                 if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
1021                                         continue;
1022 #endif
1023 #if 1
1024                                 if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
1025                                         continue;
1026 #endif
1027                                 surfaceindex = leaf->surfaceindex;
1028                                 surface = info->model->data_surfaces + surfaceindex;
1029                                 currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
1030                                 castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
1031                                 t = leaf->itemindex;
1032                                 e = info->model->surfmesh.data_element3i + t * 3;
1033                                 v[0] = info->model->surfmesh.data_vertex3f + e[0] * 3;
1034                                 v[1] = info->model->surfmesh.data_vertex3f + e[1] * 3;
1035                                 v[2] = info->model->surfmesh.data_vertex3f + e[2] * 3;
1036                                 VectorCopy(v[0], v2[0]);
1037                                 VectorCopy(v[1], v2[1]);
1038                                 VectorCopy(v[2], v2[2]);
1039                                 if (info->svbsp_insertoccluder)
1040                                 {
1041                                         if (castshadow)
1042                                                 SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
1043                                         continue;
1044                                 }
1045                                 if (info->svbsp_active && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
1046                                         continue;
1047                                 // we don't occlude triangles from lighting even
1048                                 // if they are backfacing, because when using
1049                                 // shadowmapping they are often not fully occluded
1050                                 // on the horizon of an edge
1051                                 SETPVSBIT(info->outlighttrispvs, t);
1052                                 if (castshadow)
1053                                 {
1054                                         if (noocclusion || (currentmaterialflags & MATERIALFLAG_NOCULLFACE))
1055                                         {
1056                                                 // if the material is double sided we
1057                                                 // can't cull by direction
1058                                                 SETPVSBIT(info->outshadowtrispvs, t);
1059                                         }
1060                                         else if (frontsidecasting)
1061                                         {
1062                                                 // front side casting occludes backfaces,
1063                                                 // so they are completely useless as both
1064                                                 // casters and lit polygons
1065                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1066                                                         SETPVSBIT(info->outshadowtrispvs, t);
1067                                         }
1068                                         else
1069                                         {
1070                                                 // back side casting does not occlude
1071                                                 // anything so we can't cull lit polygons
1072                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1073                                                         SETPVSBIT(info->outshadowtrispvs, t);
1074                                         }
1075                                 }
1076                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
1077                                 {
1078                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
1079                                         info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
1080                                 }
1081                         }
1082                 }
1083                 else
1084                 {
1085                         axis = node->type - BIH_SPLITX;
1086 #if 0
1087                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
1088                                 continue;
1089 #endif
1090 #if 0
1091                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
1092                                 continue;
1093 #endif
1094                         if (info->lightmins[axis] <= node->backmax)
1095                         {
1096                                 if (info->lightmaxs[axis] >= node->frontmin && nodestackpos < GETLIGHTINFO_MAXNODESTACK-1)
1097                                         nodestack[nodestackpos++] = node->front;
1098                                 nodestack[nodestackpos++] = node->back;
1099                                 continue;
1100                         }
1101                         else if (info->lightmaxs[axis] >= node->frontmin)
1102                         {
1103                                 nodestack[nodestackpos++] = node->front;
1104                                 continue;
1105                         }
1106                         else
1107                                 continue; // light falls between children, nothing here
1108                 }
1109         }
1110 }
1111
1112 static void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
1113 {
1114         extern cvar_t r_shadow_usebihculling;
1115         if (use_svbsp)
1116         {
1117                 float origin[3];
1118                 VectorCopy(info->relativelightorigin, origin);
1119                 r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<12);
1120                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1121                 info->svbsp_active = true;
1122                 info->svbsp_insertoccluder = true;
1123                 for (;;)
1124                 {
1125                         SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
1126                         R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1127                         // if that failed, retry with more nodes
1128                         if (r_svbsp.ranoutofnodes)
1129                         {
1130                                 // an upper limit is imposed
1131                                 if (r_svbsp.maxnodes >= 2<<22)
1132                                         break;
1133                                 r_svbsp.maxnodes *= 2;
1134                                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1135                                 //Mem_Free(r_svbsp.nodes);
1136                                 //r_svbsp.nodes = (svbsp_node_t*) Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
1137                         }
1138                         else
1139                                 break;
1140                 }
1141                 // now clear the visibility arrays because we need to redo it
1142                 info->outnumleafs = 0;
1143                 info->outnumsurfaces = 0;
1144                 memset(info->outleafpvs, 0, (info->model->brush.num_leafs + 7) >> 3);
1145                 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
1146                 memset(info->outshadowtrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1147                 memset(info->outlighttrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1148         }
1149         else
1150                 info->svbsp_active = false;
1151
1152         // we HAVE to mark the leaf the light is in as lit, because portals are
1153         // irrelevant to a leaf that the light source is inside of
1154         // (and they are all facing away, too)
1155         {
1156                 mnode_t *node = info->model->brush.data_nodes;
1157                 mleaf_t *leaf;
1158                 while (node->plane)
1159                         node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
1160                 leaf = (mleaf_t *)node;
1161                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
1162                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
1163                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
1164                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
1165                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
1166                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
1167                 if (info->outleafpvs)
1168                 {
1169                         int leafindex = leaf - info->model->brush.data_leafs;
1170                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
1171                         {
1172                                 SETPVSBIT(info->outleafpvs, leafindex);
1173                                 info->outleaflist[info->outnumleafs++] = leafindex;
1174                         }
1175                 }
1176         }
1177
1178         info->svbsp_insertoccluder = false;
1179         // 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
1180         if (r_shadow_usebihculling.integer > 0 && (r_shadow_usebihculling.integer == 2 || info->model->brush.num_leafs == 1) && info->model->render_bih.leafs != NULL)
1181         {
1182                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, true);
1183                 R_Q1BSP_RecursiveGetLightInfo_BIH(info, &info->model->render_bih);
1184         }
1185         else
1186                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1187         // we're using temporary framedata memory, so this pointer will be invalid soon, clear it
1188         r_svbsp.nodes = NULL;
1189         if (developer_extra.integer && use_svbsp)
1190         {
1191                 Con_DPrintf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
1192                 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);
1193                 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);
1194         }
1195 }
1196
1197 static msurface_t *r_q1bsp_getlightinfo_surfaces;
1198
1199 static int R_Q1BSP_GetLightInfo_comparefunc(const void *ap, const void *bp)
1200 {
1201         int a = *(int*)ap;
1202         int b = *(int*)bp;
1203         const msurface_t *as = r_q1bsp_getlightinfo_surfaces + a;
1204         const msurface_t *bs = r_q1bsp_getlightinfo_surfaces + b;
1205         if (as->texture < bs->texture)
1206                 return -1;
1207         if (as->texture > bs->texture)
1208                 return 1;
1209         return a - b;
1210 }
1211
1212 extern cvar_t r_shadow_sortsurfaces;
1213
1214 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, qboolean noocclusion)
1215 {
1216         r_q1bsp_getlightinfo_t info;
1217         info.frontsidecasting = r_shadow_frontsidecasting.integer != 0;
1218         info.noocclusion = noocclusion || !info.frontsidecasting;
1219         VectorCopy(relativelightorigin, info.relativelightorigin);
1220         info.lightradius = lightradius;
1221         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
1222         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
1223         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
1224         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
1225         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
1226         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
1227         if (ent->model == NULL)
1228         {
1229                 VectorCopy(info.lightmins, outmins);
1230                 VectorCopy(info.lightmaxs, outmaxs);
1231                 *outnumleafspointer = 0;
1232                 *outnumsurfacespointer = 0;
1233                 return;
1234         }
1235         info.model = ent->model;
1236         info.outleaflist = outleaflist;
1237         info.outleafpvs = outleafpvs;
1238         info.outnumleafs = 0;
1239         info.visitingleafpvs = visitingleafpvs;
1240         info.outsurfacelist = outsurfacelist;
1241         info.outsurfacepvs = outsurfacepvs;
1242         info.outshadowtrispvs = outshadowtrispvs;
1243         info.outlighttrispvs = outlighttrispvs;
1244         info.outnumsurfaces = 0;
1245         info.numfrustumplanes = numfrustumplanes;
1246         info.frustumplanes = frustumplanes;
1247         VectorCopy(info.relativelightorigin, info.outmins);
1248         VectorCopy(info.relativelightorigin, info.outmaxs);
1249         memset(visitingleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1250         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1251         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
1252         memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1253         memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1254         if (info.model->brush.GetPVS && !info.noocclusion)
1255                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
1256         else
1257                 info.pvs = NULL;
1258         RSurf_ActiveModelEntity(r_refdef.scene.worldentity, false, false, false);
1259
1260         if (!info.noocclusion && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer && info.model->brush.data_portals)
1261         {
1262                 // use portal recursion for exact light volume culling, and exact surface checking
1263                 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);
1264         }
1265         else if (!info.noocclusion && r_shadow_realtime_dlight_portalculling.integer && info.model->brush.data_portals)
1266         {
1267                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
1268                 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);
1269         }
1270         else
1271         {
1272                 // recurse the bsp tree, checking leafs and surfaces for visibility
1273                 // optionally using svbsp for exact culling of compiled lights
1274                 // (or if the user enables dlight svbsp culling, which is mostly for
1275                 //  debugging not actual use)
1276                 R_Q1BSP_CallRecursiveGetLightInfo(&info, !info.noocclusion && (r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer) != 0);
1277         }
1278
1279         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveModelEntity
1280
1281         // limit combined leaf box to light boundaries
1282         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
1283         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
1284         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
1285         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
1286         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
1287         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
1288
1289         *outnumleafspointer = info.outnumleafs;
1290         *outnumsurfacespointer = info.outnumsurfaces;
1291
1292         // now sort surfaces by texture for faster rendering
1293         r_q1bsp_getlightinfo_surfaces = info.model->data_surfaces;
1294         if (r_shadow_sortsurfaces.integer)
1295                 qsort(info.outsurfacelist, info.outnumsurfaces, sizeof(*info.outsurfacelist), R_Q1BSP_GetLightInfo_comparefunc);
1296 }
1297
1298 void R_Mod_CompileShadowMap(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1299 {
1300         dp_model_t *model = ent->model;
1301         msurface_t *surface;
1302         int surfacelistindex;
1303         int sidetotals[6] = { 0, 0, 0, 0, 0, 0 }, sidemasks = 0;
1304         int i;
1305         // FIXME: the sidetotals code incorrectly assumes that static_meshchain is
1306         // a single mesh - to prevent that from crashing (sideoffsets, sidetotals
1307         // exceeding the number of triangles in a single mesh) we have to make sure
1308         // that we make only a single mesh - so over-estimate the size of the mesh
1309         // to match the model.
1310         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Begin(r_main_mempool, model->surfmesh.num_vertices, model->surfmesh.num_triangles);
1311         R_Shadow_PrepareShadowSides(model->surfmesh.num_triangles);
1312         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1313         {
1314                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1315                 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);
1316         }
1317         R_Shadow_ShadowMapFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, model->surfmesh.data_vertex3f, model->surfmesh.data_element3i, numshadowsides, sidetotals, shadowsides, shadowsideslist);
1318         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Finish(r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, true);
1319         r_shadow_compilingrtlight->static_shadowmap_receivers &= sidemasks;
1320         for(i = 0;i<6;i++)
1321                 if(!sidetotals[i])
1322                         r_shadow_compilingrtlight->static_shadowmap_casters &= ~(1 << i);
1323 }
1324
1325 #define RSURF_MAX_BATCHSURFACES 8192
1326
1327 static const msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
1328
1329 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)
1330 {
1331         dp_model_t *model = ent->model;
1332         const msurface_t *surface;
1333         int modelsurfacelistindex, batchnumsurfaces;
1334         // check the box in modelspace, it was already checked in worldspace
1335         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1336                 return;
1337         R_FrameData_SetMark();
1338         // identify lit faces within the bounding box
1339         for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1340         {
1341                 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1342                 if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
1343                         continue;
1344                 rsurface.texture = R_GetCurrentTexture(surface->texture);
1345                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1346                         continue;
1347                 if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1348                         continue;
1349                 r_refdef.stats[r_stat_lights_dynamicshadowtriangles] += surface->num_triangles;
1350                 r_refdef.stats[r_stat_lights_shadowtriangles] += surface->num_triangles;
1351                 batchsurfacelist[0] = surface;
1352                 batchnumsurfaces = 1;
1353                 while(++modelsurfacelistindex < modelnumsurfaces && batchnumsurfaces < RSURF_MAX_BATCHSURFACES)
1354                 {
1355                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1356                         if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
1357                                 continue;
1358                         if (surface->texture != batchsurfacelist[0]->texture)
1359                                 break;
1360                         if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1361                                 continue;
1362                         r_refdef.stats[r_stat_lights_dynamicshadowtriangles] += surface->num_triangles;
1363                         r_refdef.stats[r_stat_lights_shadowtriangles] += surface->num_triangles;
1364                         batchsurfacelist[batchnumsurfaces++] = surface;
1365                 }
1366                 --modelsurfacelistindex;
1367                 GL_CullFace(rsurface.texture->currentmaterialflags & MATERIALFLAG_NOCULLFACE ? GL_NONE : r_refdef.view.cullface_back);
1368                 RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX | BATCHNEED_ALLOWMULTIDRAW, batchnumsurfaces, batchsurfacelist);
1369                 R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer, rsurface.batchvertex3f_bufferoffset);
1370                 RSurf_DrawBatch();
1371         }
1372         R_FrameData_ReturnToMark();
1373 }
1374
1375 #define BATCHSIZE 1024
1376
1377 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
1378 {
1379         int i, j, endsurface;
1380         texture_t *t;
1381         const msurface_t *surface;
1382         R_FrameData_SetMark();
1383         // note: in practice this never actually receives batches
1384         R_Shadow_RenderMode_Begin();
1385         R_Shadow_RenderMode_ActiveLight(rtlight);
1386         R_Shadow_RenderMode_Lighting(true, rtlight->shadowmapatlassidesize != 0, (ent->flags & RENDER_NOSELFSHADOW) != 0);
1387         R_Shadow_SetupEntityLight(ent);
1388         for (i = 0;i < numsurfaces;i = j)
1389         {
1390                 j = i + 1;
1391                 surface = rsurface.modelsurfaces + surfacelist[i];
1392                 t = surface->texture;
1393                 rsurface.texture = R_GetCurrentTexture(t);
1394                 endsurface = min(j + BATCHSIZE, numsurfaces);
1395                 for (j = i;j < endsurface;j++)
1396                 {
1397                         surface = rsurface.modelsurfaces + surfacelist[j];
1398                         if (t != surface->texture)
1399                                 break;
1400                         R_Shadow_RenderLighting(1, &surface);
1401                 }
1402         }
1403         R_Shadow_RenderMode_End();
1404         R_FrameData_ReturnToMark();
1405 }
1406
1407 extern qboolean r_shadow_usingdeferredprepass;
1408 void R_Mod_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *lighttrispvs)
1409 {
1410         dp_model_t *model = ent->model;
1411         const msurface_t *surface;
1412         int i, k, kend, l, endsurface, batchnumsurfaces, texturenumsurfaces;
1413         const msurface_t **texturesurfacelist;
1414         texture_t *tex;
1415         CHECKGLERROR
1416         R_FrameData_SetMark();
1417         // this is a double loop because non-visible surface skipping has to be
1418         // fast, and even if this is not the world model (and hence no visibility
1419         // checking) the input surface list and batch buffer are different formats
1420         // so some processing is necessary.  (luckily models have few surfaces)
1421         for (i = 0;i < numsurfaces;)
1422         {
1423                 batchnumsurfaces = 0;
1424                 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1425                 if (ent == r_refdef.scene.worldentity)
1426                 {
1427                         for (;i < endsurface;i++)
1428                                 if (r_refdef.viewcache.world_surfacevisible[surfacelist[i]])
1429                                         batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1430                 }
1431                 else
1432                 {
1433                         for (;i < endsurface;i++)
1434                                 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1435                 }
1436                 if (!batchnumsurfaces)
1437                         continue;
1438                 for (k = 0;k < batchnumsurfaces;k = kend)
1439                 {
1440                         surface = batchsurfacelist[k];
1441                         tex = surface->texture;
1442                         rsurface.texture = R_GetCurrentTexture(tex);
1443                         // gather surfaces into a batch range
1444                         for (kend = k;kend < batchnumsurfaces && tex == batchsurfacelist[kend]->texture;kend++)
1445                                 ;
1446                         // now figure out what to do with this particular range of surfaces
1447                         // VorteX: added MATERIALFLAG_NORTLIGHT
1448                         if ((rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_NORTLIGHT)) != MATERIALFLAG_WALL)
1449                                 continue;
1450                         if (r_fb.water.renderingscene && (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA)))
1451                                 continue;
1452                         if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1453                         {
1454                                 vec3_t tempcenter, center;
1455                                 for (l = k;l < kend;l++)
1456                                 {
1457                                         surface = batchsurfacelist[l];
1458                                         if (r_transparent_sortsurfacesbynearest.integer)
1459                                         {
1460                                                 tempcenter[0] = bound(surface->mins[0], rsurface.localvieworigin[0], surface->maxs[0]);
1461                                                 tempcenter[1] = bound(surface->mins[1], rsurface.localvieworigin[1], surface->maxs[1]);
1462                                                 tempcenter[2] = bound(surface->mins[2], rsurface.localvieworigin[2], surface->maxs[2]);
1463                                         }
1464                                         else
1465                                         {
1466                                                 tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1467                                                 tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1468                                                 tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1469                                         }
1470                                         Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
1471                                         if (ent->transparent_offset) // transparent offset
1472                                         {
1473                                                 center[0] += r_refdef.view.forward[0]*ent->transparent_offset;
1474                                                 center[1] += r_refdef.view.forward[1]*ent->transparent_offset;
1475                                                 center[2] += r_refdef.view.forward[2]*ent->transparent_offset;
1476                                         }
1477                                         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);
1478                                 }
1479                                 continue;
1480                         }
1481                         if (r_shadow_usingdeferredprepass)
1482                                 continue;
1483                         texturenumsurfaces = kend - k;
1484                         texturesurfacelist = batchsurfacelist + k;
1485                         R_Shadow_RenderLighting(texturenumsurfaces, texturesurfacelist);
1486                 }
1487         }
1488         R_FrameData_ReturnToMark();
1489 }
1490
1491 //Made by [515]
1492 static void R_ReplaceWorldTexture_f(cmd_state_t *cmd)
1493 {
1494         dp_model_t              *m;
1495         texture_t       *t;
1496         int                     i;
1497         const char      *r, *newt;
1498         skinframe_t *skinframe;
1499         if (!r_refdef.scene.worldmodel)
1500         {
1501                 Con_Printf("There is no worldmodel\n");
1502                 return;
1503         }
1504         m = r_refdef.scene.worldmodel;
1505
1506         if(Cmd_Argc(cmd) < 2)
1507         {
1508                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1509                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1510                 return;
1511         }
1512         if(!cl.islocalgame || !cl.worldmodel)
1513         {
1514                 Con_Print("This command works only in singleplayer\n");
1515                 return;
1516         }
1517         r = Cmd_Argv(cmd, 1);
1518         newt = Cmd_Argv(cmd, 2);
1519         if(!newt[0])
1520                 newt = r;
1521         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1522         {
1523                 if(/*t->width && !strcasecmp(t->name, r)*/ matchpattern( t->name, r, true ) )
1524                 {
1525                         if ((skinframe = R_SkinFrame_LoadExternal(newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PICMIP, true, false)))
1526                         {
1527 //                              t->skinframes[0] = skinframe;
1528                                 t->currentskinframe = skinframe;
1529                                 Con_Printf("%s replaced with %s\n", r, newt);
1530                         }
1531                         else
1532                         {
1533                                 Con_Printf("%s was not found\n", newt);
1534                                 return;
1535                         }
1536                 }
1537         }
1538 }
1539
1540 //Made by [515]
1541 static void R_ListWorldTextures_f(cmd_state_t *cmd)
1542 {
1543         dp_model_t              *m;
1544         texture_t       *t;
1545         int                     i;
1546         if (!r_refdef.scene.worldmodel)
1547         {
1548                 Con_Printf("There is no worldmodel\n");
1549                 return;
1550         }
1551         m = r_refdef.scene.worldmodel;
1552
1553         Con_Print("Worldmodel textures :\n");
1554         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1555                 if (t->name[0] && strcasecmp(t->name, "NO TEXTURE FOUND"))
1556                         Con_Printf("%s\n", t->name);
1557 }
1558
1559 #if 0
1560 static void gl_surf_start(void)
1561 {
1562 }
1563
1564 static void gl_surf_shutdown(void)
1565 {
1566 }
1567
1568 static void gl_surf_newmap(void)
1569 {
1570 }
1571 #endif
1572
1573 void GL_Surf_Init(void)
1574 {
1575
1576         Cvar_RegisterVariable(&r_ambient);
1577         Cvar_RegisterVariable(&r_lockpvs);
1578         Cvar_RegisterVariable(&r_lockvisibility);
1579         Cvar_RegisterVariable(&r_useportalculling);
1580         Cvar_RegisterVariable(&r_usesurfaceculling);
1581         Cvar_RegisterVariable(&r_vis_trace);
1582         Cvar_RegisterVariable(&r_vis_trace_samples);
1583         Cvar_RegisterVariable(&r_vis_trace_delay);
1584         Cvar_RegisterVariable(&r_vis_trace_eyejitter);
1585         Cvar_RegisterVariable(&r_vis_trace_enlarge);
1586         Cvar_RegisterVariable(&r_vis_trace_expand);
1587         Cvar_RegisterVariable(&r_vis_trace_pad);
1588         Cvar_RegisterVariable(&r_vis_trace_surfaces);
1589         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1590
1591         Cmd_AddCommand(CMD_CLIENT, "r_replacemaptexture", R_ReplaceWorldTexture_f, "override a map texture for testing purposes");
1592         Cmd_AddCommand(CMD_CLIENT, "r_listmaptextures", R_ListWorldTextures_f, "list all textures used by the current map");
1593
1594         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1595 }
1596