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 = {0, "r_ambient", "0", "brightens map, value is 0-128"};
  29 cvar_t r_lockpvs = {0, "r_lockpvs", "0", "disables pvs switching, allows you to walk around and inspect what is visible from a given location in the map (anything not visible from your current location will not be drawn)"};
  30 cvar_t r_lockvisibility = {0, "r_lockvisibility", "0", "disables visibility updates, allows you to walk around and inspect what is visible from a given viewpoint in the map (anything offscreen at the moment this is enabled will not be drawn)"};
  31 cvar_t r_useportalculling = {0, "r_useportalculling", "2", "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 = {0, "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_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"};
  34
  35 /*
  36 ===============
  37 R_BuildLightMap
  38
  39 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  40 ===============
  41 */
  42 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  43 {
  44         int smax, tmax, i, size, size3, maps, l;
  45         int *bl, scale;
  46         unsigned char *lightmap, *out, *stain;
  47         dp_model_t *model = ent->model;
  48         int *intblocklights;
  49         unsigned char *templight;
  50
  51         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  52         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  53         size = smax*tmax;
  54         size3 = size*3;
  55
  56         r_refdef.stats.lightmapupdatepixels += size;
  57         r_refdef.stats.lightmapupdates++;
  58
  59         if (cl.buildlightmapmemorysize < size*sizeof(int[3]))
  60         {
  61                 cl.buildlightmapmemorysize = size*sizeof(int[3]);
  62                 if (cl.buildlightmapmemory)
  63                         Mem_Free(cl.buildlightmapmemory);
  64                 cl.buildlightmapmemory = (unsigned char *) Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
  65         }
  66
  67         // these both point at the same buffer, templight is only used for final
  68         // processing and can replace the intblocklights data as it goes
  69         intblocklights = (int *)cl.buildlightmapmemory;
  70         templight = (unsigned char *)cl.buildlightmapmemory;
  71
  72         // update cached lighting info
  73         model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = false;
  74
  75         lightmap = surface->lightmapinfo->samples;
  76
  77 // set to full bright if no light data
  78         bl = intblocklights;
  79         if (!model->brushq1.lightdata)
  80         {
  81                 for (i = 0;i < size3;i++)
  82                         bl[i] = 128*256;
  83         }
  84         else
  85         {
  86 // clear to no light
  87                 memset(bl, 0, size3*sizeof(*bl));
  88
  89 // add all the lightmaps
  90                 if (lightmap)
  91                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  92                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  93                                         bl[i] += lightmap[i] * scale;
  94         }
  95
  96         stain = surface->lightmapinfo->stainsamples;
  97         bl = intblocklights;
  98         out = templight;
  99         // the >> 16 shift adjusts down 8 bits to account for the stainmap
 100         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
 101         // be doubled during rendering to achieve 2x overbright
 102         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 103         if (stain)
 104         {
 105                 for (i = 0;i < size;i++, bl += 3, stain += 3, out += 4)
 106                 {
 107                         l = (bl[0] * stain[0]) >> 16;out[2] = min(l, 255);
 108                         l = (bl[1] * stain[1]) >> 16;out[1] = min(l, 255);
 109                         l = (bl[2] * stain[2]) >> 16;out[0] = min(l, 255);
 110                         out[3] = 255;
 111                 }
 112         }
 113         else
 114         {
 115                 for (i = 0;i < size;i++, bl += 3, out += 4)
 116                 {
 117                         l = bl[0] >> 8;out[2] = min(l, 255);
 118                         l = bl[1] >> 8;out[1] = min(l, 255);
 119                         l = bl[2] >> 8;out[0] = min(l, 255);
 120                         out[3] = 255;
 121                 }
 122         }
 123
 124         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
 125                 Image_MakesRGBColorsFromLinear_Lightmap(templight, templight, size);
 126         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 127
 128         // update the surface's deluxemap if it has one
 129         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 130         {
 131                 vec3_t n;
 132                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 133                 lightmap = surface->lightmapinfo->samples;
 134                 // clear to no normalmap
 135                 bl = intblocklights;
 136                 memset(bl, 0, size3*sizeof(*bl));
 137                 // add all the normalmaps
 138                 if (lightmap && normalmap)
 139                 {
 140                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 141                         {
 142                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 143                                 {
 144                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 145                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 146                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 147                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 148                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 149                                 }
 150                         }
 151                 }
 152                 bl = intblocklights;
 153                 out = templight;
 154                 // we simply renormalize the weighted normals to get a valid deluxemap
 155                 for (i = 0;i < size;i++, bl += 3, out += 4)
 156                 {
 157                         VectorCopy(bl, n);
 158                         VectorNormalize(n);
 159                         l = (int)(n[0] * 128 + 128);out[2] = bound(0, l, 255);
 160                         l = (int)(n[1] * 128 + 128);out[1] = bound(0, l, 255);
 161                         l = (int)(n[2] * 128 + 128);out[0] = bound(0, l, 255);
 162                         out[3] = 255;
 163                 }
 164                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 165         }
 166 }
 167
 168 static void R_StainNode (mnode_t *node, dp_model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 169 {
 170         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 171         msurface_t *surface, *endsurface;
 172         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 173         unsigned char *bl;
 174         vec3_t impact;
 175
 176         maxdist = radius * radius;
 177         invradius = 1.0f / radius;
 178
 179 loc0:
 180         if (!node->plane)
 181                 return;
 182         ndist = PlaneDiff(origin, node->plane);
 183         if (ndist > radius)
 184         {
 185                 node = node->children[0];
 186                 goto loc0;
 187         }
 188         if (ndist < -radius)
 189         {
 190                 node = node->children[1];
 191                 goto loc0;
 192         }
 193
 194         dist2 = ndist * ndist;
 195         maxdist3 = maxdist - dist2;
 196
 197         if (node->plane->type < 3)
 198         {
 199                 VectorCopy(origin, impact);
 200                 impact[node->plane->type] -= ndist;
 201         }
 202         else
 203         {
 204                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 205                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 206                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 207         }
 208
 209         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 210         {
 211                 if (surface->lightmapinfo->stainsamples)
 212                 {
 213                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 214                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 215
 216                         impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
 217                         impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 218
 219                         s = bound(0, impacts, smax * 16) - impacts;
 220                         t = bound(0, impactt, tmax * 16) - impactt;
 221                         i = (int)(s * s + t * t + dist2);
 222                         if ((i > maxdist) || (smax > (int)(sizeof(sdtable)/sizeof(sdtable[0])))) // smax overflow fix from Andreas Dehmel
 223                                 continue;
 224
 225                         // reduce calculations
 226                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 227                                 sdtable[s] = i * i + dist2;
 228
 229                         bl = surface->lightmapinfo->stainsamples;
 230                         smax3 = smax * 3;
 231                         stained = false;
 232
 233                         i = impactt;
 234                         for (t = 0;t < tmax;t++, i -= 16)
 235                         {
 236                                 td = i * i;
 237                                 // make sure some part of it is visible on this line
 238                                 if (td < maxdist3)
 239                                 {
 240                                         maxdist2 = maxdist - td;
 241                                         for (s = 0;s < smax;s++)
 242                                         {
 243                                                 if (sdtable[s] < maxdist2)
 244                                                 {
 245                                                         ratio = lhrandom(0.0f, 1.0f);
 246                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 247                                                         if (a >= (1.0f / 64.0f))
 248                                                         {
 249                                                                 if (a > 1)
 250                                                                         a = 1;
 251                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 252                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 253                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 254                                                                 stained = true;
 255                                                         }
 256                                                 }
 257                                                 bl += 3;
 258                                         }
 259                                 }
 260                                 else // skip line
 261                                         bl += smax3;
 262                         }
 263                         // force lightmap upload
 264                         if (stained)
 265                                 model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = true;
 266                 }
 267         }
 268
 269         if (node->children[0]->plane)
 270         {
 271                 if (node->children[1]->plane)
 272                 {
 273                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 274                         node = node->children[1];
 275                         goto loc0;
 276                 }
 277                 else
 278                 {
 279                         node = node->children[0];
 280                         goto loc0;
 281                 }
 282         }
 283         else if (node->children[1]->plane)
 284         {
 285                 node = node->children[1];
 286                 goto loc0;
 287         }
 288 }
 289
 290 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)
 291 {
 292         int n;
 293         float fcolor[8];
 294         entity_render_t *ent;
 295         dp_model_t *model;
 296         vec3_t org;
 297         if (r_refdef.scene.worldmodel == NULL || !r_refdef.scene.worldmodel->brush.data_nodes || !r_refdef.scene.worldmodel->brushq1.lightdata)
 298                 return;
 299         fcolor[0] = cr1;
 300         fcolor[1] = cg1;
 301         fcolor[2] = cb1;
 302         fcolor[3] = ca1 * (1.0f / 64.0f);
 303         fcolor[4] = cr2 - cr1;
 304         fcolor[5] = cg2 - cg1;
 305         fcolor[6] = cb2 - cb1;
 306         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 307
 308         R_StainNode(r_refdef.scene.worldmodel->brush.data_nodes + r_refdef.scene.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.scene.worldmodel, origin, radius, fcolor);
 309
 310         // look for embedded bmodels
 311         for (n = 0;n < cl.num_brushmodel_entities;n++)
 312         {
 313                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 314                 model = ent->model;
 315                 if (model && model->name[0] == '*')
 316                 {
 317                         if (model->brush.data_nodes)
 318                         {
 319                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 320                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 321                         }
 322                 }
 323         }
 324 }
 325
 326
 327 /*
 328 =============================================================
 329
 330         BRUSH MODELS
 331
 332 =============================================================
 333 */
 334
 335 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 336 {
 337         // due to the hacky nature of this function's parameters, this is never
 338         // called with a batch, so numsurfaces is always 1, and the surfacelist
 339         // contains only a leaf number for coloring purposes
 340         const mportal_t *portal = (mportal_t *)ent;
 341         qboolean isvis;
 342         int i, numpoints;
 343         float *v;
 344         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 345         CHECKGLERROR
 346         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 347         GL_DepthMask(false);
 348         GL_DepthRange(0, 1);
 349         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
 350         GL_DepthTest(true);
 351         GL_CullFace(GL_NONE);
 352         R_EntityMatrix(&identitymatrix);
 353
 354         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 355
 356 //      R_Mesh_ResetTextureState();
 357
 358         isvis = (portal->here->clusterindex >= 0 && portal->past->clusterindex >= 0 && portal->here->clusterindex != portal->past->clusterindex);
 359
 360         i = surfacelist[0] >> 1;
 361         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 362                          ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 363                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 364                          isvis ? 0.125f : 0.03125f);
 365         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 366                 VectorCopy(portal->points[i].position, v);
 367         R_Mesh_PrepareVertices_Generic_Arrays(numpoints, vertex3f, NULL, NULL);
 368         R_SetupShader_Generic_NoTexture(false, false);
 369         R_Mesh_Draw(0, numpoints, 0, numpoints - 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
 370 }
 371
 372 // LordHavoc: this is just a nice debugging tool, very slow
 373 void R_DrawPortals(void)
 374 {
 375         int i, leafnum;
 376         mportal_t *portal;
 377         float center[3], f;
 378         dp_model_t *model = r_refdef.scene.worldmodel;
 379         if (model == NULL)
 380                 return;
 381         for (leafnum = 0;leafnum < r_refdef.scene.worldmodel->brush.num_leafs;leafnum++)
 382         {
 383                 if (r_refdef.viewcache.world_leafvisible[leafnum])
 384                 {
 385                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 386                         for (portal = r_refdef.scene.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 387                         {
 388                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 389                                 if (!R_CullBox(portal->mins, portal->maxs))
 390                                 {
 391                                         VectorClear(center);
 392                                         for (i = 0;i < portal->numpoints;i++)
 393                                                 VectorAdd(center, portal->points[i].position, center);
 394                                         f = ixtable[portal->numpoints];
 395                                         VectorScale(center, f, center);
 396                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, rsurface.rtlight);
 397                                 }
 398                         }
 399                 }
 400         }
 401 }
 402
 403 static void R_View_WorldVisibility_CullSurfaces(void)
 404 {
 405         int surfaceindex;
 406         int surfaceindexstart;
 407         int surfaceindexend;
 408         unsigned char *surfacevisible;
 409         msurface_t *surfaces;
 410         dp_model_t *model = r_refdef.scene.worldmodel;
 411         if (!model)
 412                 return;
 413         if (r_trippy.integer)
 414                 return;
 415         if (r_usesurfaceculling.integer < 1)
 416                 return;
 417         surfaceindexstart = model->firstmodelsurface;
 418         surfaceindexend = surfaceindexstart + model->nummodelsurfaces;
 419         surfaces = model->data_surfaces;
 420         surfacevisible = r_refdef.viewcache.world_surfacevisible;
 421         for (surfaceindex = surfaceindexstart;surfaceindex < surfaceindexend;surfaceindex++)
 422                 if (surfacevisible[surfaceindex] && R_CullBox(surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs))
 423                         surfacevisible[surfaceindex] = 0;
 424 }
 425
 426 void R_View_WorldVisibility(qboolean forcenovis)
 427 {
 428         int i, j, *mark;
 429         mleaf_t *leaf;
 430         mleaf_t *viewleaf;
 431         dp_model_t *model = r_refdef.scene.worldmodel;
 432
 433         if (!model)
 434                 return;
 435
 436         if (r_refdef.view.usecustompvs)
 437         {
 438                 // clear the visible surface and leaf flags arrays
 439                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 440                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 441                 r_refdef.viewcache.world_novis = false;
 442
 443                 // simply cull each marked leaf to the frustum (view pyramid)
 444                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 445                 {
 446                         // if leaf is in current pvs and on the screen, mark its surfaces
 447                         if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 448                         {
 449                                 r_refdef.stats.world_leafs++;
 450                                 r_refdef.viewcache.world_leafvisible[j] = true;
 451                                 if (leaf->numleafsurfaces)
 452                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 453                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 454                         }
 455                 }
 456                 R_View_WorldVisibility_CullSurfaces();
 457                 return;
 458         }
 459
 460         // if possible find the leaf the view origin is in
 461         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_refdef.view.origin) : NULL;
 462         // if possible fetch the visible cluster bits
 463         if (!r_lockpvs.integer && model->brush.FatPVS)
 464                 model->brush.FatPVS(model, r_refdef.view.origin, 2, r_refdef.viewcache.world_pvsbits, (r_refdef.viewcache.world_numclusters+7)>>3, false);
 465
 466         if (!r_lockvisibility.integer)
 467         {
 468                 // clear the visible surface and leaf flags arrays
 469                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 470                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 471
 472                 r_refdef.viewcache.world_novis = false;
 473
 474                 // if floating around in the void (no pvs data available, and no
 475                 // portals available), simply use all on-screen leafs.
 476                 if (!viewleaf || viewleaf->clusterindex < 0 || forcenovis || r_trippy.integer)
 477                 {
 478                         // no visibility method: (used when floating around in the void)
 479                         // simply cull each leaf to the frustum (view pyramid)
 480                         // similar to quake's RecursiveWorldNode but without cache misses
 481                         r_refdef.viewcache.world_novis = true;
 482                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 483                         {
 484                                 if (leaf->clusterindex < 0)
 485                                         continue;
 486                                 // if leaf is in current pvs and on the screen, mark its surfaces
 487                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 488                                 {
 489                                         r_refdef.stats.world_leafs++;
 490                                         r_refdef.viewcache.world_leafvisible[j] = true;
 491                                         if (leaf->numleafsurfaces)
 492                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 493                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 494                                 }
 495                         }
 496                 }
 497                 // just check if each leaf in the PVS is on screen
 498                 // (unless portal culling is enabled)
 499                 else if (!model->brush.data_portals || r_useportalculling.integer < 1 || (r_useportalculling.integer < 2 && !r_novis.integer))
 500                 {
 501                         // pvs method:
 502                         // simply check if each leaf is in the Potentially Visible Set,
 503                         // and cull to frustum (view pyramid)
 504                         // similar to quake's RecursiveWorldNode but without cache misses
 505                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 506                         {
 507                                 if (leaf->clusterindex < 0)
 508                                         continue;
 509                                 // if leaf is in current pvs and on the screen, mark its surfaces
 510                                 if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 511                                 {
 512                                         r_refdef.stats.world_leafs++;
 513                                         r_refdef.viewcache.world_leafvisible[j] = true;
 514                                         if (leaf->numleafsurfaces)
 515                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 516                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 517                                 }
 518                         }
 519                 }
 520                 // if desired use a recursive portal flow, culling each portal to
 521                 // frustum and checking if the leaf the portal leads to is in the pvs
 522                 else
 523                 {
 524                         int leafstackpos;
 525                         mportal_t *p;
 526                         mleaf_t *leafstack[8192];
 527                         // simple-frustum portal method:
 528                         // follows portals leading outward from viewleaf, does not venture
 529                         // offscreen or into leafs that are not visible, faster than
 530                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 531                         // often culls some surfaces that pvs alone would miss
 532                         // (such as a room in pvs that is hidden behind a wall, but the
 533                         //  passage leading to the room is off-screen)
 534                         leafstack[0] = viewleaf;
 535                         leafstackpos = 1;
 536                         while (leafstackpos)
 537                         {
 538                                 leaf = leafstack[--leafstackpos];
 539                                 if (r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs])
 540                                         continue;
 541                                 if (leaf->clusterindex < 0)
 542                                         continue;
 543                                 r_refdef.stats.world_leafs++;
 544                                 r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 545                                 // mark any surfaces bounding this leaf
 546                                 if (leaf->numleafsurfaces)
 547                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 548                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 549                                 // follow portals into other leafs
 550                                 // the checks are:
 551                                 // if viewer is behind portal (portal faces outward into the scene)
 552                                 // and the portal polygon's bounding box is on the screen
 553                                 // and the leaf has not been visited yet
 554                                 // and the leaf is visible in the pvs
 555                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 556                                 for (p = leaf->portals;p;p = p->next)
 557                                 {
 558                                         r_refdef.stats.world_portals++;
 559                                         if (DotProduct(r_refdef.view.origin, p->plane.normal) < (p->plane.dist + 1)
 560                                          && !r_refdef.viewcache.world_leafvisible[p->past - model->brush.data_leafs]
 561                                          && CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, p->past->clusterindex)
 562                                          && !R_CullBox(p->mins, p->maxs)
 563                                          && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
 564                                                 leafstack[leafstackpos++] = p->past;
 565                                 }
 566                         }
 567                 }
 568         }
 569
 570         R_View_WorldVisibility_CullSurfaces();
 571 }
 572
 573 void R_Q1BSP_DrawSky(entity_render_t *ent)
 574 {
 575         if (ent->model == NULL)
 576                 return;
 577         if (ent == r_refdef.scene.worldentity)
 578                 R_DrawWorldSurfaces(true, true, false, false, false);
 579         else
 580                 R_DrawModelSurfaces(ent, true, true, false, false, false);
 581 }
 582
 583 void R_Q1BSP_DrawAddWaterPlanes(entity_render_t *ent)
 584 {
 585         int i, j, n, flagsmask;
 586         dp_model_t *model = ent->model;
 587         msurface_t *surfaces;
 588         if (model == NULL)
 589                 return;
 590
 591         if (ent == r_refdef.scene.worldentity)
 592                 RSurf_ActiveWorldEntity();
 593         else
 594                 RSurf_ActiveModelEntity(ent, true, false, false);
 595
 596         surfaces = model->data_surfaces;
 597         flagsmask = MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA;
 598
 599         // add visible surfaces to draw list
 600         if (ent == r_refdef.scene.worldentity)
 601         {
 602                 for (i = 0;i < model->nummodelsurfaces;i++)
 603                 {
 604                         j = model->sortedmodelsurfaces[i];
 605                         if (r_refdef.viewcache.world_surfacevisible[j])
 606                                 if (surfaces[j].texture->basematerialflags & flagsmask)
 607                                         R_Water_AddWaterPlane(surfaces + j, 0);
 608                 }
 609         }
 610         else
 611         {
 612                 if(ent->entitynumber >= MAX_EDICTS) // && CL_VM_TransformView(ent->entitynumber - MAX_EDICTS, NULL, NULL, NULL))
 613                         n = ent->entitynumber;
 614                 else
 615                         n = 0;
 616                 for (i = 0;i < model->nummodelsurfaces;i++)
 617                 {
 618                         j = model->sortedmodelsurfaces[i];
 619                         if (surfaces[j].texture->basematerialflags & flagsmask)
 620                                 R_Water_AddWaterPlane(surfaces + j, n);
 621                 }
 622         }
 623         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
 624 }
 625
 626 void R_Q1BSP_Draw(entity_render_t *ent)
 627 {
 628         dp_model_t *model = ent->model;
 629         if (model == NULL)
 630                 return;
 631         if (ent == r_refdef.scene.worldentity)
 632                 R_DrawWorldSurfaces(false, true, false, false, false);
 633         else
 634                 R_DrawModelSurfaces(ent, false, true, false, false, false);
 635 }
 636
 637 void R_Q1BSP_DrawDepth(entity_render_t *ent)
 638 {
 639         dp_model_t *model = ent->model;
 640         if (model == NULL)
 641                 return;
 642         GL_ColorMask(0,0,0,0);
 643         GL_Color(1,1,1,1);
 644         GL_DepthTest(true);
 645         GL_BlendFunc(GL_ONE, GL_ZERO);
 646         GL_DepthMask(true);
 647 //      R_Mesh_ResetTextureState();
 648         R_SetupShader_DepthOrShadow(false, false);
 649         if (ent == r_refdef.scene.worldentity)
 650                 R_DrawWorldSurfaces(false, false, true, false, false);
 651         else
 652                 R_DrawModelSurfaces(ent, false, false, true, false, false);
 653         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
 654 }
 655
 656 void R_Q1BSP_DrawDebug(entity_render_t *ent)
 657 {
 658         if (ent->model == NULL)
 659                 return;
 660         if (ent == r_refdef.scene.worldentity)
 661                 R_DrawWorldSurfaces(false, false, false, true, false);
 662         else
 663                 R_DrawModelSurfaces(ent, false, false, false, true, false);
 664 }
 665
 666 void R_Q1BSP_DrawPrepass(entity_render_t *ent)
 667 {
 668         dp_model_t *model = ent->model;
 669         if (model == NULL)
 670                 return;
 671         if (ent == r_refdef.scene.worldentity)
 672                 R_DrawWorldSurfaces(false, true, false, false, true);
 673         else
 674                 R_DrawModelSurfaces(ent, false, true, false, false, true);
 675 }
 676
 677 typedef struct r_q1bsp_getlightinfo_s
 678 {
 679         dp_model_t *model;
 680         vec3_t relativelightorigin;
 681         float lightradius;
 682         int *outleaflist;
 683         unsigned char *outleafpvs;
 684         int outnumleafs;
 685         unsigned char *visitingleafpvs;
 686         int *outsurfacelist;
 687         unsigned char *outsurfacepvs;
 688         unsigned char *tempsurfacepvs;
 689         unsigned char *outshadowtrispvs;
 690         unsigned char *outlighttrispvs;
 691         int outnumsurfaces;
 692         vec3_t outmins;
 693         vec3_t outmaxs;
 694         vec3_t lightmins;
 695         vec3_t lightmaxs;
 696         const unsigned char *pvs;
 697         qboolean svbsp_active;
 698         qboolean svbsp_insertoccluder;
 699         int numfrustumplanes;
 700         const mplane_t *frustumplanes;
 701 }
 702 r_q1bsp_getlightinfo_t;
 703
 704 #define GETLIGHTINFO_MAXNODESTACK 4096
 705
 706 static void R_Q1BSP_RecursiveGetLightInfo_BSP(r_q1bsp_getlightinfo_t *info, qboolean skipsurfaces)
 707 {
 708         // nodestack
 709         mnode_t *nodestack[GETLIGHTINFO_MAXNODESTACK];
 710         int nodestackpos = 0;
 711         // node processing
 712         mplane_t *plane;
 713         mnode_t *node;
 714         int sides;
 715         // leaf processing
 716         mleaf_t *leaf;
 717         const msurface_t *surface;
 718         const msurface_t *surfaces = info->model->data_surfaces;
 719         int numleafsurfaces;
 720         int leafsurfaceindex;
 721         int surfaceindex;
 722         int triangleindex, t;
 723         int currentmaterialflags;
 724         qboolean castshadow;
 725         const int *e;
 726         const vec_t *v[3];
 727         float v2[3][3];
 728         qboolean insidebox;
 729         qboolean frontsidecasting = r_shadow_frontsidecasting.integer != 0;
 730         qboolean svbspactive = info->svbsp_active;
 731         qboolean svbspinsertoccluder = info->svbsp_insertoccluder;
 732         const int *leafsurfaceindices;
 733         qboolean addedtris;
 734         int i;
 735         mportal_t *portal;
 736         static float points[128][3];
 737         // push the root node onto our nodestack
 738         nodestack[nodestackpos++] = info->model->brush.data_nodes;
 739         // we'll be done when the nodestack is empty
 740         while (nodestackpos)
 741         {
 742                 // get a node from the stack to process
 743                 node = nodestack[--nodestackpos];
 744                 // is it a node or a leaf?
 745                 plane = node->plane;
 746                 if (plane)
 747                 {
 748                         // node
 749 #if 0
 750                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 751                                 continue;
 752 #endif
 753 #if 0
 754                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
 755                                 continue;
 756 #endif
 757                         // axial planes can be processed much more quickly
 758                         if (plane->type < 3)
 759                         {
 760                                 // axial plane
 761                                 if (info->lightmins[plane->type] > plane->dist)
 762                                         nodestack[nodestackpos++] = node->children[0];
 763                                 else if (info->lightmaxs[plane->type] < plane->dist)
 764                                         nodestack[nodestackpos++] = node->children[1];
 765                                 else
 766                                 {
 767                                         // recurse front side first because the svbsp building prefers it
 768                                         if (info->relativelightorigin[plane->type] >= plane->dist)
 769                                         {
 770                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 771                                                         nodestack[nodestackpos++] = node->children[0];
 772                                                 nodestack[nodestackpos++] = node->children[1];
 773                                         }
 774                                         else
 775                                         {
 776                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 777                                                         nodestack[nodestackpos++] = node->children[1];
 778                                                 nodestack[nodestackpos++] = node->children[0];
 779                                         }
 780                                 }
 781                         }
 782                         else
 783                         {
 784                                 // sloped plane
 785                                 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 786                                 switch (sides)
 787                                 {
 788                                 default:
 789                                         continue; // ERROR: NAN bounding box!
 790                                 case 1:
 791                                         nodestack[nodestackpos++] = node->children[0];
 792                                         break;
 793                                 case 2:
 794                                         nodestack[nodestackpos++] = node->children[1];
 795                                         break;
 796                                 case 3:
 797                                         // recurse front side first because the svbsp building prefers it
 798                                         if (PlaneDist(info->relativelightorigin, plane) >= 0)
 799                                         {
 800                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 801                                                         nodestack[nodestackpos++] = node->children[0];
 802                                                 nodestack[nodestackpos++] = node->children[1];
 803                                         }
 804                                         else
 805                                         {
 806                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 807                                                         nodestack[nodestackpos++] = node->children[1];
 808                                                 nodestack[nodestackpos++] = node->children[0];
 809                                         }
 810                                         break;
 811                                 }
 812                         }
 813                 }
 814                 else
 815                 {
 816                         // leaf
 817                         leaf = (mleaf_t *)node;
 818 #if 1
 819                         if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
 820                                 continue;
 821 #endif
 822 #if 1
 823                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
 824                                 continue;
 825 #endif
 826 #if 1
 827                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
 828                                 continue;
 829 #endif
 830
 831                         if (svbspactive)
 832                         {
 833                                 // we can occlusion test the leaf by checking if all of its portals
 834                                 // are occluded (unless the light is in this leaf - but that was
 835                                 // already handled by the caller)
 836                                 for (portal = leaf->portals;portal;portal = portal->next)
 837                                 {
 838                                         for (i = 0;i < portal->numpoints;i++)
 839                                                 VectorCopy(portal->points[i].position, points[i]);
 840                                         if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
 841                                                 break;
 842                                 }
 843                                 if (leaf->portals && portal == NULL)
 844                                         continue; // no portals of this leaf visible
 845                         }
 846
 847                         // add this leaf to the reduced light bounds
 848                         info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 849                         info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 850                         info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 851                         info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 852                         info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 853                         info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 854
 855                         // mark this leaf as being visible to the light
 856                         if (info->outleafpvs)
 857                         {
 858                                 int leafindex = leaf - info->model->brush.data_leafs;
 859                                 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 860                                 {
 861                                         SETPVSBIT(info->outleafpvs, leafindex);
 862                                         info->outleaflist[info->outnumleafs++] = leafindex;
 863                                 }
 864                         }
 865
 866                         // when using BIH, we skip the surfaces here
 867                         if (skipsurfaces)
 868                                 continue;
 869
 870                         // iterate the surfaces linked by this leaf and check their triangles
 871                         leafsurfaceindices = leaf->firstleafsurface;
 872                         numleafsurfaces = leaf->numleafsurfaces;
 873                         if (svbspinsertoccluder)
 874                         {
 875                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 876                                 {
 877                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 878                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 879                                                 continue;
 880                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 881                                         surface = surfaces + surfaceindex;
 882                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 883                                                 continue;
 884                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 885                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 886                                         if (!castshadow)
 887                                                 continue;
 888                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 889                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 890                                         {
 891                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 892                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 893                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 894                                                 VectorCopy(v[0], v2[0]);
 895                                                 VectorCopy(v[1], v2[1]);
 896                                                 VectorCopy(v[2], v2[2]);
 897                                                 if (insidebox || TriangleOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 898                                                         SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
 899                                         }
 900                                 }
 901                         }
 902                         else
 903                         {
 904                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 905                                 {
 906                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 907                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 908                                                 continue;
 909                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 910                                         surface = surfaces + surfaceindex;
 911                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 912                                                 continue;
 913                                         addedtris = false;
 914                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 915                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 916                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 917                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 918                                         {
 919                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 920                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 921                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 922                                                 VectorCopy(v[0], v2[0]);
 923                                                 VectorCopy(v[1], v2[1]);
 924                                                 VectorCopy(v[2], v2[2]);
 925                                                 if (!insidebox && !TriangleOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 926                                                         continue;
 927                                                 if (svbspactive && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
 928                                                         continue;
 929                                                 // we don't omit triangles from lighting even if they are
 930                                                 // backfacing, because when using shadowmapping they are often
 931                                                 // not fully occluded on the horizon of an edge
 932                                                 SETPVSBIT(info->outlighttrispvs, t);
 933                                                 addedtris = true;
 934                                                 if (castshadow)
 935                                                 {
 936                                                         if (currentmaterialflags & MATERIALFLAG_NOCULLFACE)
 937                                                         {
 938                                                                 // if the material is double sided we
 939                                                                 // can't cull by direction
 940                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 941                                                         }
 942                                                         else if (frontsidecasting)
 943                                                         {
 944                                                                 // front side casting occludes backfaces,
 945                                                                 // so they are completely useless as both
 946                                                                 // casters and lit polygons
 947                                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 948                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 949                                                         }
 950                                                         else
 951                                                         {
 952                                                                 // back side casting does not occlude
 953                                                                 // anything so we can't cull lit polygons
 954                                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 955                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 956                                                         }
 957                                                 }
 958                                         }
 959                                         if (addedtris)
 960                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 961                                 }
 962                         }
 963                 }
 964         }
 965 }
 966
 967 static void R_Q1BSP_RecursiveGetLightInfo_BIH(r_q1bsp_getlightinfo_t *info, const bih_t *bih)
 968 {
 969         bih_leaf_t *leaf;
 970         bih_node_t *node;
 971         int nodenum;
 972         int axis;
 973         int surfaceindex;
 974         int t;
 975         int nodeleafindex;
 976         int currentmaterialflags;
 977         qboolean castshadow;
 978         msurface_t *surface;
 979         const int *e;
 980         const vec_t *v[3];
 981         float v2[3][3];
 982         int nodestack[GETLIGHTINFO_MAXNODESTACK];
 983         int nodestackpos = 0;
 984         // note: because the BSP leafs are not in the BIH tree, the _BSP function
 985         // must be called to mark leafs visible for entity culling...
 986         // we start at the root node
 987         nodestack[nodestackpos++] = bih->rootnode;
 988         // we'll be done when the stack is empty
 989         while (nodestackpos)
 990         {
 991                 // pop one off the stack to process
 992                 nodenum = nodestack[--nodestackpos];
 993                 // node
 994                 node = bih->nodes + nodenum;
 995                 if (node->type == BIH_UNORDERED)
 996                 {
 997                         for (nodeleafindex = 0;nodeleafindex < BIH_MAXUNORDEREDCHILDREN && node->children[nodeleafindex] >= 0;nodeleafindex++)
 998                         {
 999                                 leaf = bih->leafs + node->children[nodeleafindex];
1000                                 if (leaf->type != BIH_RENDERTRIANGLE)
1001                                         continue;
1002 #if 1
1003                                 if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
1004                                         continue;
1005 #endif
1006 #if 1
1007                                 if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
1008                                         continue;
1009 #endif
1010                                 surfaceindex = leaf->surfaceindex;
1011                                 surface = info->model->data_surfaces + surfaceindex;
1012                                 currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
1013                                 castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
1014                                 t = leaf->itemindex + surface->num_firstshadowmeshtriangle - surface->num_firsttriangle;
1015                                 e = info->model->brush.shadowmesh->element3i + t * 3;
1016                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
1017                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
1018                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
1019                                 VectorCopy(v[0], v2[0]);
1020                                 VectorCopy(v[1], v2[1]);
1021                                 VectorCopy(v[2], v2[2]);
1022                                 if (info->svbsp_insertoccluder)
1023                                 {
1024                                         if (castshadow)
1025                                                 SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
1026                                         continue;
1027                                 }
1028                                 if (info->svbsp_active && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
1029                                         continue;
1030                                 // we don't occlude triangles from lighting even
1031                                 // if they are backfacing, because when using
1032                                 // shadowmapping they are often not fully occluded
1033                                 // on the horizon of an edge
1034                                 SETPVSBIT(info->outlighttrispvs, t);
1035                                 if (castshadow)
1036                                 {
1037                                         if (currentmaterialflags & MATERIALFLAG_NOCULLFACE)
1038                                         {
1039                                                 // if the material is double sided we
1040                                                 // can't cull by direction
1041                                                 SETPVSBIT(info->outshadowtrispvs, t);
1042                                         }
1043                                         else if (r_shadow_frontsidecasting.integer)
1044                                         {
1045                                                 // front side casting occludes backfaces,
1046                                                 // so they are completely useless as both
1047                                                 // casters and lit polygons
1048                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1049                                                         SETPVSBIT(info->outshadowtrispvs, t);
1050                                         }
1051                                         else
1052                                         {
1053                                                 // back side casting does not occlude
1054                                                 // anything so we can't cull lit polygons
1055                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1056                                                         SETPVSBIT(info->outshadowtrispvs, t);
1057                                         }
1058                                 }
1059                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
1060                                 {
1061                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
1062                                         info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
1063                                 }
1064                         }
1065                 }
1066                 else
1067                 {
1068                         axis = node->type - BIH_SPLITX;
1069 #if 0
1070                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
1071                                 continue;
1072 #endif
1073 #if 0
1074                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
1075                                 continue;
1076 #endif
1077                         if (info->lightmins[axis] <= node->backmax)
1078                         {
1079                                 if (info->lightmaxs[axis] >= node->frontmin && nodestackpos < GETLIGHTINFO_MAXNODESTACK)
1080                                         nodestack[nodestackpos++] = node->front;
1081                                 nodestack[nodestackpos++] = node->back;
1082                                 continue;
1083                         }
1084                         else if (info->lightmaxs[axis] >= node->frontmin)
1085                         {
1086                                 nodestack[nodestackpos++] = node->front;
1087                                 continue;
1088                         }
1089                         else
1090                                 continue; // light falls between children, nothing here
1091                 }
1092         }
1093 }
1094
1095 static void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
1096 {
1097         extern cvar_t r_shadow_usebihculling;
1098         if (use_svbsp)
1099         {
1100                 float origin[3];
1101                 VectorCopy(info->relativelightorigin, origin);
1102                 r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<12);
1103                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1104                 info->svbsp_active = true;
1105                 info->svbsp_insertoccluder = true;
1106                 for (;;)
1107                 {
1108                         SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
1109                         R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1110                         // if that failed, retry with more nodes
1111                         if (r_svbsp.ranoutofnodes)
1112                         {
1113                                 // an upper limit is imposed
1114                                 if (r_svbsp.maxnodes >= 2<<22)
1115                                         break;
1116                                 r_svbsp.maxnodes *= 2;
1117                                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1118                                 //Mem_Free(r_svbsp.nodes);
1119                                 //r_svbsp.nodes = (svbsp_node_t*) Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
1120                         }
1121                         else
1122                                 break;
1123                 }
1124                 // now clear the visibility arrays because we need to redo it
1125                 info->outnumleafs = 0;
1126                 info->outnumsurfaces = 0;
1127                 memset(info->outleafpvs, 0, (info->model->brush.num_leafs + 7) >> 3);
1128                 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
1129                 if (info->model->brush.shadowmesh)
1130                         memset(info->outshadowtrispvs, 0, (info->model->brush.shadowmesh->numtriangles + 7) >> 3);
1131                 else
1132                         memset(info->outshadowtrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1133                 memset(info->outlighttrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1134         }
1135         else
1136                 info->svbsp_active = false;
1137
1138         // we HAVE to mark the leaf the light is in as lit, because portals are
1139         // irrelevant to a leaf that the light source is inside of
1140         // (and they are all facing away, too)
1141         {
1142                 mnode_t *node = info->model->brush.data_nodes;
1143                 mleaf_t *leaf;
1144                 while (node->plane)
1145                         node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
1146                 leaf = (mleaf_t *)node;
1147                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
1148                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
1149                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
1150                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
1151                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
1152                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
1153                 if (info->outleafpvs)
1154                 {
1155                         int leafindex = leaf - info->model->brush.data_leafs;
1156                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
1157                         {
1158                                 SETPVSBIT(info->outleafpvs, leafindex);
1159                                 info->outleaflist[info->outnumleafs++] = leafindex;
1160                         }
1161                 }
1162         }
1163
1164         info->svbsp_insertoccluder = false;
1165         // 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
1166         if (r_shadow_usebihculling.integer > 0 && (r_shadow_usebihculling.integer == 2 || info->model->brush.num_leafs == 1) && info->model->render_bih.leafs != NULL)
1167         {
1168                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, true);
1169                 R_Q1BSP_RecursiveGetLightInfo_BIH(info, &info->model->render_bih);
1170         }
1171         else
1172                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1173         // we're using temporary framedata memory, so this pointer will be invalid soon, clear it
1174         r_svbsp.nodes = NULL;
1175         if (developer_extra.integer && use_svbsp)
1176         {
1177                 Con_DPrintf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
1178                 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);
1179                 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);
1180         }
1181 }
1182
1183 static msurface_t *r_q1bsp_getlightinfo_surfaces;
1184
1185 static int R_Q1BSP_GetLightInfo_comparefunc(const void *ap, const void *bp)
1186 {
1187         int a = *(int*)ap;
1188         int b = *(int*)bp;
1189         const msurface_t *as = r_q1bsp_getlightinfo_surfaces + a;
1190         const msurface_t *bs = r_q1bsp_getlightinfo_surfaces + b;
1191         if (as->texture < bs->texture)
1192                 return -1;
1193         if (as->texture > bs->texture)
1194                 return 1;
1195         return a - b;
1196 }
1197
1198 extern cvar_t r_shadow_sortsurfaces;
1199
1200 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer, unsigned char *outshadowtrispvs, unsigned char *outlighttrispvs, unsigned char *visitingleafpvs, int numfrustumplanes, const mplane_t *frustumplanes)
1201 {
1202         r_q1bsp_getlightinfo_t info;
1203         VectorCopy(relativelightorigin, info.relativelightorigin);
1204         info.lightradius = lightradius;
1205         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
1206         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
1207         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
1208         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
1209         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
1210         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
1211         if (ent->model == NULL)
1212         {
1213                 VectorCopy(info.lightmins, outmins);
1214                 VectorCopy(info.lightmaxs, outmaxs);
1215                 *outnumleafspointer = 0;
1216                 *outnumsurfacespointer = 0;
1217                 return;
1218         }
1219         info.model = ent->model;
1220         info.outleaflist = outleaflist;
1221         info.outleafpvs = outleafpvs;
1222         info.outnumleafs = 0;
1223         info.visitingleafpvs = visitingleafpvs;
1224         info.outsurfacelist = outsurfacelist;
1225         info.outsurfacepvs = outsurfacepvs;
1226         info.outshadowtrispvs = outshadowtrispvs;
1227         info.outlighttrispvs = outlighttrispvs;
1228         info.outnumsurfaces = 0;
1229         info.numfrustumplanes = numfrustumplanes;
1230         info.frustumplanes = frustumplanes;
1231         VectorCopy(info.relativelightorigin, info.outmins);
1232         VectorCopy(info.relativelightorigin, info.outmaxs);
1233         memset(visitingleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1234         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1235         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
1236         if (info.model->brush.shadowmesh)
1237                 memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
1238         else
1239                 memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1240         memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1241         if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
1242                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
1243         else
1244                 info.pvs = NULL;
1245         RSurf_ActiveWorldEntity();
1246
1247         if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer && info.model->brush.data_portals)
1248         {
1249                 // use portal recursion for exact light volume culling, and exact surface checking
1250                 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);
1251         }
1252         else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer && info.model->brush.data_portals)
1253         {
1254                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
1255                 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);
1256         }
1257         else
1258         {
1259                 // recurse the bsp tree, checking leafs and surfaces for visibility
1260                 // optionally using svbsp for exact culling of compiled lights
1261                 // (or if the user enables dlight svbsp culling, which is mostly for
1262                 //  debugging not actual use)
1263                 R_Q1BSP_CallRecursiveGetLightInfo(&info, (r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer) != 0);
1264         }
1265
1266         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
1267
1268         // limit combined leaf box to light boundaries
1269         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
1270         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
1271         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
1272         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
1273         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
1274         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
1275
1276         *outnumleafspointer = info.outnumleafs;
1277         *outnumsurfacespointer = info.outnumsurfaces;
1278
1279         // now sort surfaces by texture for faster rendering
1280         r_q1bsp_getlightinfo_surfaces = info.model->data_surfaces;
1281         if (r_shadow_sortsurfaces.integer)
1282                 qsort(info.outsurfacelist, info.outnumsurfaces, sizeof(*info.outsurfacelist), R_Q1BSP_GetLightInfo_comparefunc);
1283 }
1284
1285 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1286 {
1287         dp_model_t *model = ent->model;
1288         msurface_t *surface;
1289         int surfacelistindex;
1290         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
1291         // if triangle neighbors are disabled, shadowvolumes are disabled
1292         if (!model->brush.shadowmesh->neighbor3i)
1293                 return;
1294         r_shadow_compilingrtlight->static_meshchain_shadow_zfail = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
1295         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1296         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1297         {
1298                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1299                 if (surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW)
1300                         continue;
1301                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs);
1302         }
1303         R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist, ent->mins, ent->maxs);
1304         r_shadow_compilingrtlight->static_meshchain_shadow_zfail = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zfail, false, false, true);
1305 }
1306
1307 extern cvar_t r_polygonoffset_submodel_factor;
1308 extern cvar_t r_polygonoffset_submodel_offset;
1309 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, const vec3_t relativelightorigin, const vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
1310 {
1311         dp_model_t *model = ent->model;
1312         const msurface_t *surface;
1313         int modelsurfacelistindex;
1314         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
1315         // check the box in modelspace, it was already checked in worldspace
1316         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1317                 return;
1318         R_FrameData_SetMark();
1319         if (ent->model->brush.submodel)
1320                 GL_PolygonOffset(r_refdef.shadowpolygonfactor + r_polygonoffset_submodel_factor.value, r_refdef.shadowpolygonoffset + r_polygonoffset_submodel_offset.value);
1321         if (model->brush.shadowmesh)
1322         {
1323                 // if triangle neighbors are disabled, shadowvolumes are disabled
1324                 if (!model->brush.shadowmesh->neighbor3i)
1325                         return;
1326                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1327                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1328                 {
1329                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1330                         if (R_GetCurrentTexture(surface->texture)->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1331                                 continue;
1332                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
1333                 }
1334                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist, ent->mins, ent->maxs);
1335         }
1336         else
1337         {
1338                 // if triangle neighbors are disabled, shadowvolumes are disabled
1339                 if (!model->surfmesh.data_neighbor3i)
1340                         return;
1341                 projectdistance = lightradius + model->radius*2;
1342                 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
1343                 // identify lit faces within the bounding box
1344                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1345                 {
1346                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1347                         rsurface.texture = R_GetCurrentTexture(surface->texture);
1348                         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1349                                 continue;
1350                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface.modelvertex3f, rsurface.modelelement3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
1351                 }
1352                 R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface.modelvertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist, ent->mins, ent->maxs);
1353         }
1354         if (ent->model->brush.submodel)
1355                 GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);
1356         R_FrameData_ReturnToMark();
1357 }
1358
1359 void R_Q1BSP_CompileShadowMap(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1360 {
1361         dp_model_t *model = ent->model;
1362         msurface_t *surface;
1363         int surfacelistindex;
1364         int sidetotals[6] = { 0, 0, 0, 0, 0, 0 }, sidemasks = 0;
1365         int i;
1366         if (!model->brush.shadowmesh)
1367                 return;
1368         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
1369         R_Shadow_PrepareShadowSides(model->brush.shadowmesh->numtriangles);
1370         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1371         {
1372                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1373                 sidemasks |= R_Shadow_ChooseSidesFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->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);
1374         }
1375         R_Shadow_ShadowMapFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, numshadowsides, sidetotals, shadowsides, shadowsideslist);
1376         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, false, false, true);
1377         r_shadow_compilingrtlight->static_shadowmap_receivers &= sidemasks;
1378         for(i = 0;i<6;i++)
1379                 if(!sidetotals[i])
1380                         r_shadow_compilingrtlight->static_shadowmap_casters &= ~(1 << i);
1381 }
1382
1383 #define RSURF_MAX_BATCHSURFACES 8192
1384
1385 static const msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
1386
1387 void R_Q1BSP_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)
1388 {
1389         dp_model_t *model = ent->model;
1390         const msurface_t *surface;
1391         int modelsurfacelistindex, batchnumsurfaces;
1392         // check the box in modelspace, it was already checked in worldspace
1393         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1394                 return;
1395         R_FrameData_SetMark();
1396         // identify lit faces within the bounding box
1397         for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1398         {
1399                 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1400                 if (surfacesides && !(surfacesides[modelsurfacelistindex] && (1 << side)))
1401                         continue;
1402                 rsurface.texture = R_GetCurrentTexture(surface->texture);
1403                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1404                         continue;
1405                 if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1406                         continue;
1407                 r_refdef.stats.lights_dynamicshadowtriangles += surface->num_triangles;
1408                 r_refdef.stats.lights_shadowtriangles += surface->num_triangles;
1409                 batchsurfacelist[0] = surface;
1410                 batchnumsurfaces = 1;
1411                 while(++modelsurfacelistindex < modelnumsurfaces && batchnumsurfaces < RSURF_MAX_BATCHSURFACES)
1412                 {
1413                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1414                         if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
1415                                 continue;
1416                         if (surface->texture != batchsurfacelist[0]->texture)
1417                                 break;
1418                         if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1419                                 continue;
1420                         r_refdef.stats.lights_dynamicshadowtriangles += surface->num_triangles;
1421                         r_refdef.stats.lights_shadowtriangles += surface->num_triangles;
1422                         batchsurfacelist[batchnumsurfaces++] = surface;
1423                 }
1424                 --modelsurfacelistindex;
1425                 GL_CullFace(rsurface.texture->currentmaterialflags & MATERIALFLAG_NOCULLFACE ? GL_NONE : r_refdef.view.cullface_back);
1426                 RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX, batchnumsurfaces, batchsurfacelist);
1427                 if (rsurface.batchvertex3fbuffer)
1428                         R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3fbuffer);
1429                 else
1430                         R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer);
1431                 RSurf_DrawBatch();
1432         }
1433         R_FrameData_ReturnToMark();
1434 }
1435
1436 #define BATCHSIZE 1024
1437
1438 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
1439 {
1440         int i, j, endsurface;
1441         texture_t *t;
1442         const msurface_t *surface;
1443         R_FrameData_SetMark();
1444         // note: in practice this never actually receives batches
1445         R_Shadow_RenderMode_Begin();
1446         R_Shadow_RenderMode_ActiveLight(rtlight);
1447         R_Shadow_RenderMode_Lighting(false, true, false);
1448         R_Shadow_SetupEntityLight(ent);
1449         for (i = 0;i < numsurfaces;i = j)
1450         {
1451                 j = i + 1;
1452                 surface = rsurface.modelsurfaces + surfacelist[i];
1453                 t = surface->texture;
1454                 rsurface.texture = R_GetCurrentTexture(t);
1455                 endsurface = min(j + BATCHSIZE, numsurfaces);
1456                 for (j = i;j < endsurface;j++)
1457                 {
1458                         surface = rsurface.modelsurfaces + surfacelist[j];
1459                         if (t != surface->texture)
1460                                 break;
1461                         R_Shadow_RenderLighting(1, &surface);
1462                 }
1463         }
1464         R_Shadow_RenderMode_End();
1465         R_FrameData_ReturnToMark();
1466 }
1467
1468 extern qboolean r_shadow_usingdeferredprepass;
1469 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *lighttrispvs)
1470 {
1471         dp_model_t *model = ent->model;
1472         const msurface_t *surface;
1473         int i, k, kend, l, endsurface, batchnumsurfaces, texturenumsurfaces;
1474         const msurface_t **texturesurfacelist;
1475         texture_t *tex;
1476         CHECKGLERROR
1477         R_FrameData_SetMark();
1478         // this is a double loop because non-visible surface skipping has to be
1479         // fast, and even if this is not the world model (and hence no visibility
1480         // checking) the input surface list and batch buffer are different formats
1481         // so some processing is necessary.  (luckily models have few surfaces)
1482         for (i = 0;i < numsurfaces;)
1483         {
1484                 batchnumsurfaces = 0;
1485                 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1486                 if (ent == r_refdef.scene.worldentity)
1487                 {
1488                         for (;i < endsurface;i++)
1489                                 if (r_refdef.viewcache.world_surfacevisible[surfacelist[i]])
1490                                         batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1491                 }
1492                 else
1493                 {
1494                         for (;i < endsurface;i++)
1495                                 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1496                 }
1497                 if (!batchnumsurfaces)
1498                         continue;
1499                 for (k = 0;k < batchnumsurfaces;k = kend)
1500                 {
1501                         surface = batchsurfacelist[k];
1502                         tex = surface->texture;
1503                         rsurface.texture = R_GetCurrentTexture(tex);
1504                         // gather surfaces into a batch range
1505                         for (kend = k;kend < batchnumsurfaces && tex == batchsurfacelist[kend]->texture;kend++)
1506                                 ;
1507                         // now figure out what to do with this particular range of surfaces
1508                         // VorteX: added MATERIALFLAG_NORTLIGHT
1509                         if ((rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NORTLIGHT)) != MATERIALFLAG_WALL)
1510                                 continue;
1511                         if (r_fb.water.renderingscene && (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA)))
1512                                 continue;
1513                         if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1514                         {
1515                                 vec3_t tempcenter, center;
1516                                 for (l = k;l < kend;l++)
1517                                 {
1518                                         surface = batchsurfacelist[l];
1519                                         tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1520                                         tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1521                                         tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1522                                         Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
1523                                         R_MeshQueue_AddTransparent(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_refdef.view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface.modelsurfaces, rsurface.rtlight);
1524                                 }
1525                                 continue;
1526                         }
1527                         if (r_shadow_usingdeferredprepass)
1528                                 continue;
1529                         texturenumsurfaces = kend - k;
1530                         texturesurfacelist = batchsurfacelist + k;
1531                         R_Shadow_RenderLighting(texturenumsurfaces, texturesurfacelist);
1532                 }
1533         }
1534         R_FrameData_ReturnToMark();
1535 }
1536
1537 //Made by [515]
1538 static void R_ReplaceWorldTexture (void)
1539 {
1540         dp_model_t              *m;
1541         texture_t       *t;
1542         int                     i;
1543         const char      *r, *newt;
1544         skinframe_t *skinframe;
1545         if (!r_refdef.scene.worldmodel)
1546         {
1547                 Con_Printf("There is no worldmodel\n");
1548                 return;
1549         }
1550         m = r_refdef.scene.worldmodel;
1551
1552         if(Cmd_Argc() < 2)
1553         {
1554                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1555                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1556                 return;
1557         }
1558         if(!cl.islocalgame || !cl.worldmodel)
1559         {
1560                 Con_Print("This command works only in singleplayer\n");
1561                 return;
1562         }
1563         r = Cmd_Argv(1);
1564         newt = Cmd_Argv(2);
1565         if(!newt[0])
1566                 newt = r;
1567         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1568         {
1569                 if(/*t->width && !strcasecmp(t->name, r)*/ matchpattern( t->name, r, true ) )
1570                 {
1571                         if ((skinframe = R_SkinFrame_LoadExternal(newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PICMIP, true)))
1572                         {
1573 //                              t->skinframes[0] = skinframe;
1574                                 t->currentskinframe = skinframe;
1575                                 t->currentskinframe = skinframe;
1576                                 Con_Printf("%s replaced with %s\n", r, newt);
1577                         }
1578                         else
1579                         {
1580                                 Con_Printf("%s was not found\n", newt);
1581                                 return;
1582                         }
1583                 }
1584         }
1585 }
1586
1587 //Made by [515]
1588 static void R_ListWorldTextures (void)
1589 {
1590         dp_model_t              *m;
1591         texture_t       *t;
1592         int                     i;
1593         if (!r_refdef.scene.worldmodel)
1594         {
1595                 Con_Printf("There is no worldmodel\n");
1596                 return;
1597         }
1598         m = r_refdef.scene.worldmodel;
1599
1600         Con_Print("Worldmodel textures :\n");
1601         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1602                 if (t->numskinframes)
1603                         Con_Printf("%s\n", t->name);
1604 }
1605
1606 #if 0
1607 static void gl_surf_start(void)
1608 {
1609 }
1610
1611 static void gl_surf_shutdown(void)
1612 {
1613 }
1614
1615 static void gl_surf_newmap(void)
1616 {
1617 }
1618 #endif
1619
1620 void GL_Surf_Init(void)
1621 {
1622
1623         Cvar_RegisterVariable(&r_ambient);
1624         Cvar_RegisterVariable(&r_lockpvs);
1625         Cvar_RegisterVariable(&r_lockvisibility);
1626         Cvar_RegisterVariable(&r_useportalculling);
1627         Cvar_RegisterVariable(&r_usesurfaceculling);
1628         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1629
1630         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");
1631         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");
1632
1633         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1634 }
1635