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 extern cvar_t vid_sRGB;
  35 extern cvar_t vid_sRGB_fallback;
  36
  37 /*
  38 ===============
  39 R_BuildLightMap
  40
  41 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  42 ===============
  43 */
  44 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  45 {
  46         int smax, tmax, i, size, size3, maps, l;
  47         int *bl, scale;
  48         unsigned char *lightmap, *out, *stain;
  49         dp_model_t *model = ent->model;
  50         int *intblocklights;
  51         unsigned char *templight;
  52
  53         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  54         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  55         size = smax*tmax;
  56         size3 = size*3;
  57
  58         r_refdef.stats.lightmapupdatepixels += size;
  59         r_refdef.stats.lightmapupdates++;
  60
  61         if (cl.buildlightmapmemorysize < size*sizeof(int[3]))
  62         {
  63                 cl.buildlightmapmemorysize = size*sizeof(int[3]);
  64                 if (cl.buildlightmapmemory)
  65                         Mem_Free(cl.buildlightmapmemory);
  66                 cl.buildlightmapmemory = (unsigned char *) Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
  67         }
  68
  69         // these both point at the same buffer, templight is only used for final
  70         // processing and can replace the intblocklights data as it goes
  71         intblocklights = (int *)cl.buildlightmapmemory;
  72         templight = (unsigned char *)cl.buildlightmapmemory;
  73
  74         // update cached lighting info
  75         model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = false;
  76
  77         lightmap = surface->lightmapinfo->samples;
  78
  79 // set to full bright if no light data
  80         bl = intblocklights;
  81         if (!model->brushq1.lightdata)
  82         {
  83                 for (i = 0;i < size3;i++)
  84                         bl[i] = 128*256;
  85         }
  86         else
  87         {
  88 // clear to no light
  89                 memset(bl, 0, size3*sizeof(*bl));
  90
  91 // add all the lightmaps
  92                 if (lightmap)
  93                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  94                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  95                                         bl[i] += lightmap[i] * scale;
  96         }
  97
  98         stain = surface->lightmapinfo->stainsamples;
  99         bl = intblocklights;
 100         out = templight;
 101         // the >> 16 shift adjusts down 8 bits to account for the stainmap
 102         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
 103         // be doubled during rendering to achieve 2x overbright
 104         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
 105         if (stain)
 106         {
 107                 for (i = 0;i < size;i++, bl += 3, stain += 3, out += 4)
 108                 {
 109                         l = (bl[0] * stain[0]) >> 16;out[2] = min(l, 255);
 110                         l = (bl[1] * stain[1]) >> 16;out[1] = min(l, 255);
 111                         l = (bl[2] * stain[2]) >> 16;out[0] = min(l, 255);
 112                         out[3] = 255;
 113                 }
 114         }
 115         else
 116         {
 117                 for (i = 0;i < size;i++, bl += 3, out += 4)
 118                 {
 119                         l = bl[0] >> 8;out[2] = min(l, 255);
 120                         l = bl[1] >> 8;out[1] = min(l, 255);
 121                         l = bl[2] >> 8;out[0] = min(l, 255);
 122                         out[3] = 255;
 123                 }
 124         }
 125
 126         if(vid_sRGB.integer && vid_sRGB_fallback.integer && !vid.sRGB3D)
 127                 Image_MakesRGBColorsFromLinear_Lightmap(templight, templight, size);
 128         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 129
 130         // update the surface's deluxemap if it has one
 131         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 132         {
 133                 vec3_t n;
 134                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 135                 lightmap = surface->lightmapinfo->samples;
 136                 // clear to no normalmap
 137                 bl = intblocklights;
 138                 memset(bl, 0, size3*sizeof(*bl));
 139                 // add all the normalmaps
 140                 if (lightmap && normalmap)
 141                 {
 142                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 143                         {
 144                                 for (scale = r_refdef.scene.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 145                                 {
 146                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 147                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 148                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 149                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 150                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 151                                 }
 152                         }
 153                 }
 154                 bl = intblocklights;
 155                 out = templight;
 156                 // we simply renormalize the weighted normals to get a valid deluxemap
 157                 for (i = 0;i < size;i++, bl += 3, out += 4)
 158                 {
 159                         VectorCopy(bl, n);
 160                         VectorNormalize(n);
 161                         l = (int)(n[0] * 128 + 128);out[2] = bound(0, l, 255);
 162                         l = (int)(n[1] * 128 + 128);out[1] = bound(0, l, 255);
 163                         l = (int)(n[2] * 128 + 128);out[0] = bound(0, l, 255);
 164                         out[3] = 255;
 165                 }
 166                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], 0, smax, tmax, 1);
 167         }
 168 }
 169
 170 static void R_StainNode (mnode_t *node, dp_model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 171 {
 172         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 173         msurface_t *surface, *endsurface;
 174         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 175         unsigned char *bl;
 176         vec3_t impact;
 177
 178         maxdist = radius * radius;
 179         invradius = 1.0f / radius;
 180
 181 loc0:
 182         if (!node->plane)
 183                 return;
 184         ndist = PlaneDiff(origin, node->plane);
 185         if (ndist > radius)
 186         {
 187                 node = node->children[0];
 188                 goto loc0;
 189         }
 190         if (ndist < -radius)
 191         {
 192                 node = node->children[1];
 193                 goto loc0;
 194         }
 195
 196         dist2 = ndist * ndist;
 197         maxdist3 = maxdist - dist2;
 198
 199         if (node->plane->type < 3)
 200         {
 201                 VectorCopy(origin, impact);
 202                 impact[node->plane->type] -= ndist;
 203         }
 204         else
 205         {
 206                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 207                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 208                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 209         }
 210
 211         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 212         {
 213                 if (surface->lightmapinfo->stainsamples)
 214                 {
 215                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 216                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 217
 218                         impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
 219                         impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 220
 221                         s = bound(0, impacts, smax * 16) - impacts;
 222                         t = bound(0, impactt, tmax * 16) - impactt;
 223                         i = (int)(s * s + t * t + dist2);
 224                         if ((i > maxdist) || (smax > (int)(sizeof(sdtable)/sizeof(sdtable[0])))) // smax overflow fix from Andreas Dehmel
 225                                 continue;
 226
 227                         // reduce calculations
 228                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 229                                 sdtable[s] = i * i + dist2;
 230
 231                         bl = surface->lightmapinfo->stainsamples;
 232                         smax3 = smax * 3;
 233                         stained = false;
 234
 235                         i = impactt;
 236                         for (t = 0;t < tmax;t++, i -= 16)
 237                         {
 238                                 td = i * i;
 239                                 // make sure some part of it is visible on this line
 240                                 if (td < maxdist3)
 241                                 {
 242                                         maxdist2 = maxdist - td;
 243                                         for (s = 0;s < smax;s++)
 244                                         {
 245                                                 if (sdtable[s] < maxdist2)
 246                                                 {
 247                                                         ratio = lhrandom(0.0f, 1.0f);
 248                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 249                                                         if (a >= (1.0f / 64.0f))
 250                                                         {
 251                                                                 if (a > 1)
 252                                                                         a = 1;
 253                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 254                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 255                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 256                                                                 stained = true;
 257                                                         }
 258                                                 }
 259                                                 bl += 3;
 260                                         }
 261                                 }
 262                                 else // skip line
 263                                         bl += smax3;
 264                         }
 265                         // force lightmap upload
 266                         if (stained)
 267                                 model->brushq1.lightmapupdateflags[surface - model->data_surfaces] = true;
 268                 }
 269         }
 270
 271         if (node->children[0]->plane)
 272         {
 273                 if (node->children[1]->plane)
 274                 {
 275                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 276                         node = node->children[1];
 277                         goto loc0;
 278                 }
 279                 else
 280                 {
 281                         node = node->children[0];
 282                         goto loc0;
 283                 }
 284         }
 285         else if (node->children[1]->plane)
 286         {
 287                 node = node->children[1];
 288                 goto loc0;
 289         }
 290 }
 291
 292 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)
 293 {
 294         int n;
 295         float fcolor[8];
 296         entity_render_t *ent;
 297         dp_model_t *model;
 298         vec3_t org;
 299         if (r_refdef.scene.worldmodel == NULL || !r_refdef.scene.worldmodel->brush.data_nodes || !r_refdef.scene.worldmodel->brushq1.lightdata)
 300                 return;
 301         fcolor[0] = cr1;
 302         fcolor[1] = cg1;
 303         fcolor[2] = cb1;
 304         fcolor[3] = ca1 * (1.0f / 64.0f);
 305         fcolor[4] = cr2 - cr1;
 306         fcolor[5] = cg2 - cg1;
 307         fcolor[6] = cb2 - cb1;
 308         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 309
 310         R_StainNode(r_refdef.scene.worldmodel->brush.data_nodes + r_refdef.scene.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.scene.worldmodel, origin, radius, fcolor);
 311
 312         // look for embedded bmodels
 313         for (n = 0;n < cl.num_brushmodel_entities;n++)
 314         {
 315                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 316                 model = ent->model;
 317                 if (model && model->name[0] == '*')
 318                 {
 319                         if (model->brush.data_nodes)
 320                         {
 321                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 322                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 323                         }
 324                 }
 325         }
 326 }
 327
 328
 329 /*
 330 =============================================================
 331
 332         BRUSH MODELS
 333
 334 =============================================================
 335 */
 336
 337 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 338 {
 339         // due to the hacky nature of this function's parameters, this is never
 340         // called with a batch, so numsurfaces is always 1, and the surfacelist
 341         // contains only a leaf number for coloring purposes
 342         const mportal_t *portal = (mportal_t *)ent;
 343         qboolean isvis;
 344         int i, numpoints;
 345         float *v;
 346         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 347         CHECKGLERROR
 348         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 349         GL_DepthMask(false);
 350         GL_DepthRange(0, 1);
 351         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
 352         GL_DepthTest(true);
 353         GL_CullFace(GL_NONE);
 354         R_EntityMatrix(&identitymatrix);
 355
 356         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 357
 358 //      R_Mesh_ResetTextureState();
 359
 360         isvis = (portal->here->clusterindex >= 0 && portal->past->clusterindex >= 0 && portal->here->clusterindex != portal->past->clusterindex);
 361
 362         i = surfacelist[0] >> 1;
 363         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 364                          ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 365                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_refdef.view.colorscale,
 366                          isvis ? 0.125f : 0.03125f);
 367         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 368                 VectorCopy(portal->points[i].position, v);
 369         R_Mesh_PrepareVertices_Generic_Arrays(numpoints, vertex3f, NULL, NULL);
 370         R_SetupShader_Generic_NoTexture(false, false);
 371         R_Mesh_Draw(0, numpoints, 0, numpoints - 2, polygonelement3i, NULL, 0, polygonelement3s, NULL, 0);
 372 }
 373
 374 // LordHavoc: this is just a nice debugging tool, very slow
 375 void R_DrawPortals(void)
 376 {
 377         int i, leafnum;
 378         mportal_t *portal;
 379         float center[3], f;
 380         dp_model_t *model = r_refdef.scene.worldmodel;
 381         if (model == NULL)
 382                 return;
 383         for (leafnum = 0;leafnum < r_refdef.scene.worldmodel->brush.num_leafs;leafnum++)
 384         {
 385                 if (r_refdef.viewcache.world_leafvisible[leafnum])
 386                 {
 387                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 388                         for (portal = r_refdef.scene.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 389                         {
 390                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 391                                 if (!R_CullBox(portal->mins, portal->maxs))
 392                                 {
 393                                         VectorClear(center);
 394                                         for (i = 0;i < portal->numpoints;i++)
 395                                                 VectorAdd(center, portal->points[i].position, center);
 396                                         f = ixtable[portal->numpoints];
 397                                         VectorScale(center, f, center);
 398                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, rsurface.rtlight);
 399                                 }
 400                         }
 401                 }
 402         }
 403 }
 404
 405 static void R_View_WorldVisibility_CullSurfaces(void)
 406 {
 407         int surfaceindex;
 408         int surfaceindexstart;
 409         int surfaceindexend;
 410         unsigned char *surfacevisible;
 411         msurface_t *surfaces;
 412         dp_model_t *model = r_refdef.scene.worldmodel;
 413         if (!model)
 414                 return;
 415         if (r_trippy.integer)
 416                 return;
 417         if (r_usesurfaceculling.integer < 1)
 418                 return;
 419         surfaceindexstart = model->firstmodelsurface;
 420         surfaceindexend = surfaceindexstart + model->nummodelsurfaces;
 421         surfaces = model->data_surfaces;
 422         surfacevisible = r_refdef.viewcache.world_surfacevisible;
 423         for (surfaceindex = surfaceindexstart;surfaceindex < surfaceindexend;surfaceindex++)
 424                 if (surfacevisible[surfaceindex] && R_CullBox(surfaces[surfaceindex].mins, surfaces[surfaceindex].maxs))
 425                         surfacevisible[surfaceindex] = 0;
 426 }
 427
 428 void R_View_WorldVisibility(qboolean forcenovis)
 429 {
 430         int i, j, *mark;
 431         mleaf_t *leaf;
 432         mleaf_t *viewleaf;
 433         dp_model_t *model = r_refdef.scene.worldmodel;
 434
 435         if (!model)
 436                 return;
 437
 438         if (r_refdef.view.usecustompvs)
 439         {
 440                 // clear the visible surface and leaf flags arrays
 441                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 442                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 443                 r_refdef.viewcache.world_novis = false;
 444
 445                 // simply cull each marked leaf to the frustum (view pyramid)
 446                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 447                 {
 448                         // if leaf is in current pvs and on the screen, mark its surfaces
 449                         if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 450                         {
 451                                 r_refdef.stats.world_leafs++;
 452                                 r_refdef.viewcache.world_leafvisible[j] = true;
 453                                 if (leaf->numleafsurfaces)
 454                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 455                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 456                         }
 457                 }
 458                 R_View_WorldVisibility_CullSurfaces();
 459                 return;
 460         }
 461
 462         // if possible find the leaf the view origin is in
 463         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_refdef.view.origin) : NULL;
 464         // if possible fetch the visible cluster bits
 465         if (!r_lockpvs.integer && model->brush.FatPVS)
 466                 model->brush.FatPVS(model, r_refdef.view.origin, 2, r_refdef.viewcache.world_pvsbits, (r_refdef.viewcache.world_numclusters+7)>>3, false);
 467
 468         if (!r_lockvisibility.integer)
 469         {
 470                 // clear the visible surface and leaf flags arrays
 471                 memset(r_refdef.viewcache.world_surfacevisible, 0, model->num_surfaces);
 472                 memset(r_refdef.viewcache.world_leafvisible, 0, model->brush.num_leafs);
 473
 474                 r_refdef.viewcache.world_novis = false;
 475
 476                 // if floating around in the void (no pvs data available, and no
 477                 // portals available), simply use all on-screen leafs.
 478                 if (!viewleaf || viewleaf->clusterindex < 0 || forcenovis || r_trippy.integer)
 479                 {
 480                         // no visibility method: (used when floating around in the void)
 481                         // simply cull each leaf to the frustum (view pyramid)
 482                         // similar to quake's RecursiveWorldNode but without cache misses
 483                         r_refdef.viewcache.world_novis = true;
 484                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 485                         {
 486                                 if (leaf->clusterindex < 0)
 487                                         continue;
 488                                 // if leaf is in current pvs and on the screen, mark its surfaces
 489                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 490                                 {
 491                                         r_refdef.stats.world_leafs++;
 492                                         r_refdef.viewcache.world_leafvisible[j] = true;
 493                                         if (leaf->numleafsurfaces)
 494                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 495                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 496                                 }
 497                         }
 498                 }
 499                 // just check if each leaf in the PVS is on screen
 500                 // (unless portal culling is enabled)
 501                 else if (!model->brush.data_portals || r_useportalculling.integer < 1 || (r_useportalculling.integer < 2 && !r_novis.integer))
 502                 {
 503                         // pvs method:
 504                         // simply check if each leaf is in the Potentially Visible Set,
 505                         // and cull to frustum (view pyramid)
 506                         // similar to quake's RecursiveWorldNode but without cache misses
 507                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 508                         {
 509                                 if (leaf->clusterindex < 0)
 510                                         continue;
 511                                 // if leaf is in current pvs and on the screen, mark its surfaces
 512                                 if (CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 513                                 {
 514                                         r_refdef.stats.world_leafs++;
 515                                         r_refdef.viewcache.world_leafvisible[j] = true;
 516                                         if (leaf->numleafsurfaces)
 517                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 518                                                         r_refdef.viewcache.world_surfacevisible[*mark] = true;
 519                                 }
 520                         }
 521                 }
 522                 // if desired use a recursive portal flow, culling each portal to
 523                 // frustum and checking if the leaf the portal leads to is in the pvs
 524                 else
 525                 {
 526                         int leafstackpos;
 527                         mportal_t *p;
 528                         mleaf_t *leafstack[8192];
 529                         // simple-frustum portal method:
 530                         // follows portals leading outward from viewleaf, does not venture
 531                         // offscreen or into leafs that are not visible, faster than
 532                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 533                         // often culls some surfaces that pvs alone would miss
 534                         // (such as a room in pvs that is hidden behind a wall, but the
 535                         //  passage leading to the room is off-screen)
 536                         leafstack[0] = viewleaf;
 537                         leafstackpos = 1;
 538                         while (leafstackpos)
 539                         {
 540                                 leaf = leafstack[--leafstackpos];
 541                                 if (r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs])
 542                                         continue;
 543                                 if (leaf->clusterindex < 0)
 544                                         continue;
 545                                 r_refdef.stats.world_leafs++;
 546                                 r_refdef.viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 547                                 // mark any surfaces bounding this leaf
 548                                 if (leaf->numleafsurfaces)
 549                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 550                                                 r_refdef.viewcache.world_surfacevisible[*mark] = true;
 551                                 // follow portals into other leafs
 552                                 // the checks are:
 553                                 // if viewer is behind portal (portal faces outward into the scene)
 554                                 // and the portal polygon's bounding box is on the screen
 555                                 // and the leaf has not been visited yet
 556                                 // and the leaf is visible in the pvs
 557                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 558                                 for (p = leaf->portals;p;p = p->next)
 559                                 {
 560                                         r_refdef.stats.world_portals++;
 561                                         if (DotProduct(r_refdef.view.origin, p->plane.normal) < (p->plane.dist + 1)
 562                                          && !r_refdef.viewcache.world_leafvisible[p->past - model->brush.data_leafs]
 563                                          && CHECKPVSBIT(r_refdef.viewcache.world_pvsbits, p->past->clusterindex)
 564                                          && !R_CullBox(p->mins, p->maxs)
 565                                          && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
 566                                                 leafstack[leafstackpos++] = p->past;
 567                                 }
 568                         }
 569                 }
 570         }
 571
 572         R_View_WorldVisibility_CullSurfaces();
 573 }
 574
 575 void R_Q1BSP_DrawSky(entity_render_t *ent)
 576 {
 577         if (ent->model == NULL)
 578                 return;
 579         if (ent == r_refdef.scene.worldentity)
 580                 R_DrawWorldSurfaces(true, true, false, false, false);
 581         else
 582                 R_DrawModelSurfaces(ent, true, true, false, false, false);
 583 }
 584
 585 void R_Q1BSP_DrawAddWaterPlanes(entity_render_t *ent)
 586 {
 587         int i, j, n, flagsmask;
 588         dp_model_t *model = ent->model;
 589         msurface_t *surfaces;
 590         if (model == NULL)
 591                 return;
 592
 593         if (ent == r_refdef.scene.worldentity)
 594                 RSurf_ActiveWorldEntity();
 595         else
 596                 RSurf_ActiveModelEntity(ent, true, false, false);
 597
 598         surfaces = model->data_surfaces;
 599         flagsmask = MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA;
 600
 601         // add visible surfaces to draw list
 602         if (ent == r_refdef.scene.worldentity)
 603         {
 604                 for (i = 0;i < model->nummodelsurfaces;i++)
 605                 {
 606                         j = model->sortedmodelsurfaces[i];
 607                         if (r_refdef.viewcache.world_surfacevisible[j])
 608                                 if (surfaces[j].texture->basematerialflags & flagsmask)
 609                                         R_Water_AddWaterPlane(surfaces + j, 0);
 610                 }
 611         }
 612         else
 613         {
 614                 if(ent->entitynumber >= MAX_EDICTS) // && CL_VM_TransformView(ent->entitynumber - MAX_EDICTS, NULL, NULL, NULL))
 615                         n = ent->entitynumber;
 616                 else
 617                         n = 0;
 618                 for (i = 0;i < model->nummodelsurfaces;i++)
 619                 {
 620                         j = model->sortedmodelsurfaces[i];
 621                         if (surfaces[j].texture->basematerialflags & flagsmask)
 622                                 R_Water_AddWaterPlane(surfaces + j, n);
 623                 }
 624         }
 625         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
 626 }
 627
 628 void R_Q1BSP_Draw(entity_render_t *ent)
 629 {
 630         dp_model_t *model = ent->model;
 631         if (model == NULL)
 632                 return;
 633         if (ent == r_refdef.scene.worldentity)
 634                 R_DrawWorldSurfaces(false, true, false, false, false);
 635         else
 636                 R_DrawModelSurfaces(ent, false, true, false, false, false);
 637 }
 638
 639 void R_Q1BSP_DrawDepth(entity_render_t *ent)
 640 {
 641         dp_model_t *model = ent->model;
 642         if (model == NULL)
 643                 return;
 644         GL_ColorMask(0,0,0,0);
 645         GL_Color(1,1,1,1);
 646         GL_DepthTest(true);
 647         GL_BlendFunc(GL_ONE, GL_ZERO);
 648         GL_DepthMask(true);
 649 //      R_Mesh_ResetTextureState();
 650         R_SetupShader_DepthOrShadow(false);
 651         if (ent == r_refdef.scene.worldentity)
 652                 R_DrawWorldSurfaces(false, false, true, false, false);
 653         else
 654                 R_DrawModelSurfaces(ent, false, false, true, false, false);
 655         GL_ColorMask(r_refdef.view.colormask[0], r_refdef.view.colormask[1], r_refdef.view.colormask[2], 1);
 656 }
 657
 658 void R_Q1BSP_DrawDebug(entity_render_t *ent)
 659 {
 660         if (ent->model == NULL)
 661                 return;
 662         if (ent == r_refdef.scene.worldentity)
 663                 R_DrawWorldSurfaces(false, false, false, true, false);
 664         else
 665                 R_DrawModelSurfaces(ent, false, false, false, true, false);
 666 }
 667
 668 void R_Q1BSP_DrawPrepass(entity_render_t *ent)
 669 {
 670         dp_model_t *model = ent->model;
 671         if (model == NULL)
 672                 return;
 673         if (ent == r_refdef.scene.worldentity)
 674                 R_DrawWorldSurfaces(false, true, false, false, true);
 675         else
 676                 R_DrawModelSurfaces(ent, false, true, false, false, true);
 677 }
 678
 679 typedef struct r_q1bsp_getlightinfo_s
 680 {
 681         dp_model_t *model;
 682         vec3_t relativelightorigin;
 683         float lightradius;
 684         int *outleaflist;
 685         unsigned char *outleafpvs;
 686         int outnumleafs;
 687         unsigned char *visitingleafpvs;
 688         int *outsurfacelist;
 689         unsigned char *outsurfacepvs;
 690         unsigned char *tempsurfacepvs;
 691         unsigned char *outshadowtrispvs;
 692         unsigned char *outlighttrispvs;
 693         int outnumsurfaces;
 694         vec3_t outmins;
 695         vec3_t outmaxs;
 696         vec3_t lightmins;
 697         vec3_t lightmaxs;
 698         const unsigned char *pvs;
 699         qboolean svbsp_active;
 700         qboolean svbsp_insertoccluder;
 701         int numfrustumplanes;
 702         const mplane_t *frustumplanes;
 703 }
 704 r_q1bsp_getlightinfo_t;
 705
 706 #define GETLIGHTINFO_MAXNODESTACK 4096
 707
 708 static void R_Q1BSP_RecursiveGetLightInfo_BSP(r_q1bsp_getlightinfo_t *info, qboolean skipsurfaces)
 709 {
 710         // nodestack
 711         mnode_t *nodestack[GETLIGHTINFO_MAXNODESTACK];
 712         int nodestackpos = 0;
 713         // node processing
 714         mplane_t *plane;
 715         mnode_t *node;
 716         int sides;
 717         // leaf processing
 718         mleaf_t *leaf;
 719         const msurface_t *surface;
 720         const msurface_t *surfaces = info->model->data_surfaces;
 721         int numleafsurfaces;
 722         int leafsurfaceindex;
 723         int surfaceindex;
 724         int triangleindex, t;
 725         int currentmaterialflags;
 726         qboolean castshadow;
 727         const int *e;
 728         const vec_t *v[3];
 729         float v2[3][3];
 730         qboolean insidebox;
 731         qboolean frontsidecasting = r_shadow_frontsidecasting.integer != 0;
 732         qboolean svbspactive = info->svbsp_active;
 733         qboolean svbspinsertoccluder = info->svbsp_insertoccluder;
 734         const int *leafsurfaceindices;
 735         qboolean addedtris;
 736         int i;
 737         mportal_t *portal;
 738         static float points[128][3];
 739         // push the root node onto our nodestack
 740         nodestack[nodestackpos++] = info->model->brush.data_nodes;
 741         // we'll be done when the nodestack is empty
 742         while (nodestackpos)
 743         {
 744                 // get a node from the stack to process
 745                 node = nodestack[--nodestackpos];
 746                 // is it a node or a leaf?
 747                 plane = node->plane;
 748                 if (plane)
 749                 {
 750                         // node
 751 #if 0
 752                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 753                                 continue;
 754 #endif
 755 #if 0
 756                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
 757                                 continue;
 758 #endif
 759                         // axial planes can be processed much more quickly
 760                         if (plane->type < 3)
 761                         {
 762                                 // axial plane
 763                                 if (info->lightmins[plane->type] > plane->dist)
 764                                         nodestack[nodestackpos++] = node->children[0];
 765                                 else if (info->lightmaxs[plane->type] < plane->dist)
 766                                         nodestack[nodestackpos++] = node->children[1];
 767                                 else
 768                                 {
 769                                         // recurse front side first because the svbsp building prefers it
 770                                         if (info->relativelightorigin[plane->type] >= plane->dist)
 771                                         {
 772                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 773                                                         nodestack[nodestackpos++] = node->children[0];
 774                                                 nodestack[nodestackpos++] = node->children[1];
 775                                         }
 776                                         else
 777                                         {
 778                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 779                                                         nodestack[nodestackpos++] = node->children[1];
 780                                                 nodestack[nodestackpos++] = node->children[0];
 781                                         }
 782                                 }
 783                         }
 784                         else
 785                         {
 786                                 // sloped plane
 787                                 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 788                                 switch (sides)
 789                                 {
 790                                 default:
 791                                         continue; // ERROR: NAN bounding box!
 792                                 case 1:
 793                                         nodestack[nodestackpos++] = node->children[0];
 794                                         break;
 795                                 case 2:
 796                                         nodestack[nodestackpos++] = node->children[1];
 797                                         break;
 798                                 case 3:
 799                                         // recurse front side first because the svbsp building prefers it
 800                                         if (PlaneDist(info->relativelightorigin, plane) >= 0)
 801                                         {
 802                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 803                                                         nodestack[nodestackpos++] = node->children[0];
 804                                                 nodestack[nodestackpos++] = node->children[1];
 805                                         }
 806                                         else
 807                                         {
 808                                                 if (nodestackpos < GETLIGHTINFO_MAXNODESTACK)
 809                                                         nodestack[nodestackpos++] = node->children[1];
 810                                                 nodestack[nodestackpos++] = node->children[0];
 811                                         }
 812                                         break;
 813                                 }
 814                         }
 815                 }
 816                 else
 817                 {
 818                         // leaf
 819                         leaf = (mleaf_t *)node;
 820 #if 1
 821                         if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
 822                                 continue;
 823 #endif
 824 #if 1
 825                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
 826                                 continue;
 827 #endif
 828 #if 1
 829                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
 830                                 continue;
 831 #endif
 832
 833                         if (svbspactive)
 834                         {
 835                                 // we can occlusion test the leaf by checking if all of its portals
 836                                 // are occluded (unless the light is in this leaf - but that was
 837                                 // already handled by the caller)
 838                                 for (portal = leaf->portals;portal;portal = portal->next)
 839                                 {
 840                                         for (i = 0;i < portal->numpoints;i++)
 841                                                 VectorCopy(portal->points[i].position, points[i]);
 842                                         if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
 843                                                 break;
 844                                 }
 845                                 if (leaf->portals && portal == NULL)
 846                                         continue; // no portals of this leaf visible
 847                         }
 848
 849                         // add this leaf to the reduced light bounds
 850                         info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 851                         info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 852                         info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 853                         info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 854                         info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 855                         info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 856
 857                         // mark this leaf as being visible to the light
 858                         if (info->outleafpvs)
 859                         {
 860                                 int leafindex = leaf - info->model->brush.data_leafs;
 861                                 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 862                                 {
 863                                         SETPVSBIT(info->outleafpvs, leafindex);
 864                                         info->outleaflist[info->outnumleafs++] = leafindex;
 865                                 }
 866                         }
 867
 868                         // when using BIH, we skip the surfaces here
 869                         if (skipsurfaces)
 870                                 continue;
 871
 872                         // iterate the surfaces linked by this leaf and check their triangles
 873                         leafsurfaceindices = leaf->firstleafsurface;
 874                         numleafsurfaces = leaf->numleafsurfaces;
 875                         if (svbspinsertoccluder)
 876                         {
 877                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 878                                 {
 879                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 880                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 881                                                 continue;
 882                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 883                                         surface = surfaces + surfaceindex;
 884                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 885                                                 continue;
 886                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 887                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 888                                         if (!castshadow)
 889                                                 continue;
 890                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 891                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 892                                         {
 893                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 894                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 895                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 896                                                 VectorCopy(v[0], v2[0]);
 897                                                 VectorCopy(v[1], v2[1]);
 898                                                 VectorCopy(v[2], v2[2]);
 899                                                 if (insidebox || TriangleOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 900                                                         SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
 901                                         }
 902                                 }
 903                         }
 904                         else
 905                         {
 906                                 for (leafsurfaceindex = 0;leafsurfaceindex < numleafsurfaces;leafsurfaceindex++)
 907                                 {
 908                                         surfaceindex = leafsurfaceindices[leafsurfaceindex];
 909                                         if (CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 910                                                 continue;
 911                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
 912                                         surface = surfaces + surfaceindex;
 913                                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 914                                                 continue;
 915                                         addedtris = false;
 916                                         currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
 917                                         castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
 918                                         insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 919                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 920                                         {
 921                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 922                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 923                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 924                                                 VectorCopy(v[0], v2[0]);
 925                                                 VectorCopy(v[1], v2[1]);
 926                                                 VectorCopy(v[2], v2[2]);
 927                                                 if (!insidebox && !TriangleOverlapsBox(v2[0], v2[1], v2[2], info->lightmins, info->lightmaxs))
 928                                                         continue;
 929                                                 if (svbspactive && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
 930                                                         continue;
 931                                                 // we don't omit triangles from lighting even if they are
 932                                                 // backfacing, because when using shadowmapping they are often
 933                                                 // not fully occluded on the horizon of an edge
 934                                                 SETPVSBIT(info->outlighttrispvs, t);
 935                                                 addedtris = true;
 936                                                 if (castshadow)
 937                                                 {
 938                                                         if (currentmaterialflags & MATERIALFLAG_NOCULLFACE)
 939                                                         {
 940                                                                 // if the material is double sided we
 941                                                                 // can't cull by direction
 942                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 943                                                         }
 944                                                         else if (frontsidecasting)
 945                                                         {
 946                                                                 // front side casting occludes backfaces,
 947                                                                 // so they are completely useless as both
 948                                                                 // casters and lit polygons
 949                                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 950                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 951                                                         }
 952                                                         else
 953                                                         {
 954                                                                 // back side casting does not occlude
 955                                                                 // anything so we can't cull lit polygons
 956                                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
 957                                                                         SETPVSBIT(info->outshadowtrispvs, t);
 958                                                         }
 959                                                 }
 960                                         }
 961                                         if (addedtris)
 962                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 963                                 }
 964                         }
 965                 }
 966         }
 967 }
 968
 969 static void R_Q1BSP_RecursiveGetLightInfo_BIH(r_q1bsp_getlightinfo_t *info, const bih_t *bih)
 970 {
 971         bih_leaf_t *leaf;
 972         bih_node_t *node;
 973         int nodenum;
 974         int axis;
 975         int surfaceindex;
 976         int t;
 977         int nodeleafindex;
 978         int currentmaterialflags;
 979         qboolean castshadow;
 980         msurface_t *surface;
 981         const int *e;
 982         const vec_t *v[3];
 983         float v2[3][3];
 984         int nodestack[GETLIGHTINFO_MAXNODESTACK];
 985         int nodestackpos = 0;
 986         // note: because the BSP leafs are not in the BIH tree, the _BSP function
 987         // must be called to mark leafs visible for entity culling...
 988         // we start at the root node
 989         nodestack[nodestackpos++] = bih->rootnode;
 990         // we'll be done when the stack is empty
 991         while (nodestackpos)
 992         {
 993                 // pop one off the stack to process
 994                 nodenum = nodestack[--nodestackpos];
 995                 // node
 996                 node = bih->nodes + nodenum;
 997                 if (node->type == BIH_UNORDERED)
 998                 {
 999                         for (nodeleafindex = 0;nodeleafindex < BIH_MAXUNORDEREDCHILDREN && node->children[nodeleafindex] >= 0;nodeleafindex++)
1000                         {
1001                                 leaf = bih->leafs + node->children[nodeleafindex];
1002                                 if (leaf->type != BIH_RENDERTRIANGLE)
1003                                         continue;
1004 #if 1
1005                                 if (!BoxesOverlap(info->lightmins, info->lightmaxs, leaf->mins, leaf->maxs))
1006                                         continue;
1007 #endif
1008 #if 1
1009                                 if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(leaf->mins, leaf->maxs, info->numfrustumplanes, info->frustumplanes))
1010                                         continue;
1011 #endif
1012                                 surfaceindex = leaf->surfaceindex;
1013                                 surface = info->model->data_surfaces + surfaceindex;
1014                                 currentmaterialflags = R_GetCurrentTexture(surface->texture)->currentmaterialflags;
1015                                 castshadow = !(currentmaterialflags & MATERIALFLAG_NOSHADOW);
1016                                 t = leaf->itemindex + surface->num_firstshadowmeshtriangle - surface->num_firsttriangle;
1017                                 e = info->model->brush.shadowmesh->element3i + t * 3;
1018                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
1019                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
1020                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
1021                                 VectorCopy(v[0], v2[0]);
1022                                 VectorCopy(v[1], v2[1]);
1023                                 VectorCopy(v[2], v2[2]);
1024                                 if (info->svbsp_insertoccluder)
1025                                 {
1026                                         if (castshadow)
1027                                                 SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0);
1028                                         continue;
1029                                 }
1030                                 if (info->svbsp_active && !(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
1031                                         continue;
1032                                 // we don't occlude triangles from lighting even
1033                                 // if they are backfacing, because when using
1034                                 // shadowmapping they are often not fully occluded
1035                                 // on the horizon of an edge
1036                                 SETPVSBIT(info->outlighttrispvs, t);
1037                                 if (castshadow)
1038                                 {
1039                                         if (currentmaterialflags & MATERIALFLAG_NOCULLFACE)
1040                                         {
1041                                                 // if the material is double sided we
1042                                                 // can't cull by direction
1043                                                 SETPVSBIT(info->outshadowtrispvs, t);
1044                                         }
1045                                         else if (r_shadow_frontsidecasting.integer)
1046                                         {
1047                                                 // front side casting occludes backfaces,
1048                                                 // so they are completely useless as both
1049                                                 // casters and lit polygons
1050                                                 if (PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1051                                                         SETPVSBIT(info->outshadowtrispvs, t);
1052                                         }
1053                                         else
1054                                         {
1055                                                 // back side casting does not occlude
1056                                                 // anything so we can't cull lit polygons
1057                                                 if (!PointInfrontOfTriangle(info->relativelightorigin, v2[0], v2[1], v2[2]))
1058                                                         SETPVSBIT(info->outshadowtrispvs, t);
1059                                         }
1060                                 }
1061                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
1062                                 {
1063                                         SETPVSBIT(info->outsurfacepvs, surfaceindex);
1064                                         info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
1065                                 }
1066                         }
1067                 }
1068                 else
1069                 {
1070                         axis = node->type - BIH_SPLITX;
1071 #if 0
1072                         if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
1073                                 continue;
1074 #endif
1075 #if 0
1076                         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rtlight->cached_numfrustumplanes, rtlight->cached_frustumplanes))
1077                                 continue;
1078 #endif
1079                         if (info->lightmins[axis] <= node->backmax)
1080                         {
1081                                 if (info->lightmaxs[axis] >= node->frontmin && nodestackpos < GETLIGHTINFO_MAXNODESTACK)
1082                                         nodestack[nodestackpos++] = node->front;
1083                                 nodestack[nodestackpos++] = node->back;
1084                                 continue;
1085                         }
1086                         else if (info->lightmaxs[axis] >= node->frontmin)
1087                         {
1088                                 nodestack[nodestackpos++] = node->front;
1089                                 continue;
1090                         }
1091                         else
1092                                 continue; // light falls between children, nothing here
1093                 }
1094         }
1095 }
1096
1097 static void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
1098 {
1099         extern cvar_t r_shadow_usebihculling;
1100         if (use_svbsp)
1101         {
1102                 float origin[3];
1103                 VectorCopy(info->relativelightorigin, origin);
1104                 r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<12);
1105                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1106                 info->svbsp_active = true;
1107                 info->svbsp_insertoccluder = true;
1108                 for (;;)
1109                 {
1110                         SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
1111                         R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1112                         // if that failed, retry with more nodes
1113                         if (r_svbsp.ranoutofnodes)
1114                         {
1115                                 // an upper limit is imposed
1116                                 if (r_svbsp.maxnodes >= 2<<22)
1117                                         break;
1118                                 r_svbsp.maxnodes *= 2;
1119                                 r_svbsp.nodes = (svbsp_node_t*) R_FrameData_Alloc(r_svbsp.maxnodes * sizeof(svbsp_node_t));
1120                                 //Mem_Free(r_svbsp.nodes);
1121                                 //r_svbsp.nodes = (svbsp_node_t*) Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
1122                         }
1123                         else
1124                                 break;
1125                 }
1126                 // now clear the visibility arrays because we need to redo it
1127                 info->outnumleafs = 0;
1128                 info->outnumsurfaces = 0;
1129                 memset(info->outleafpvs, 0, (info->model->brush.num_leafs + 7) >> 3);
1130                 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
1131                 if (info->model->brush.shadowmesh)
1132                         memset(info->outshadowtrispvs, 0, (info->model->brush.shadowmesh->numtriangles + 7) >> 3);
1133                 else
1134                         memset(info->outshadowtrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1135                 memset(info->outlighttrispvs, 0, (info->model->surfmesh.num_triangles + 7) >> 3);
1136         }
1137         else
1138                 info->svbsp_active = false;
1139
1140         // we HAVE to mark the leaf the light is in as lit, because portals are
1141         // irrelevant to a leaf that the light source is inside of
1142         // (and they are all facing away, too)
1143         {
1144                 mnode_t *node = info->model->brush.data_nodes;
1145                 mleaf_t *leaf;
1146                 while (node->plane)
1147                         node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
1148                 leaf = (mleaf_t *)node;
1149                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
1150                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
1151                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
1152                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
1153                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
1154                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
1155                 if (info->outleafpvs)
1156                 {
1157                         int leafindex = leaf - info->model->brush.data_leafs;
1158                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
1159                         {
1160                                 SETPVSBIT(info->outleafpvs, leafindex);
1161                                 info->outleaflist[info->outnumleafs++] = leafindex;
1162                         }
1163                 }
1164         }
1165
1166         info->svbsp_insertoccluder = false;
1167         // 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
1168         if (r_shadow_usebihculling.integer > 0 && (r_shadow_usebihculling.integer == 2 || info->model->brush.num_leafs == 1) && info->model->render_bih.leafs != NULL)
1169         {
1170                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, true);
1171                 R_Q1BSP_RecursiveGetLightInfo_BIH(info, &info->model->render_bih);
1172         }
1173         else
1174                 R_Q1BSP_RecursiveGetLightInfo_BSP(info, false);
1175         // we're using temporary framedata memory, so this pointer will be invalid soon, clear it
1176         r_svbsp.nodes = NULL;
1177         if (developer_extra.integer && use_svbsp)
1178         {
1179                 Con_DPrintf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
1180                 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);
1181                 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);
1182         }
1183 }
1184
1185 static msurface_t *r_q1bsp_getlightinfo_surfaces;
1186
1187 static int R_Q1BSP_GetLightInfo_comparefunc(const void *ap, const void *bp)
1188 {
1189         int a = *(int*)ap;
1190         int b = *(int*)bp;
1191         const msurface_t *as = r_q1bsp_getlightinfo_surfaces + a;
1192         const msurface_t *bs = r_q1bsp_getlightinfo_surfaces + b;
1193         if (as->texture < bs->texture)
1194                 return -1;
1195         if (as->texture > bs->texture)
1196                 return 1;
1197         return a - b;
1198 }
1199
1200 extern cvar_t r_shadow_sortsurfaces;
1201
1202 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)
1203 {
1204         r_q1bsp_getlightinfo_t info;
1205         VectorCopy(relativelightorigin, info.relativelightorigin);
1206         info.lightradius = lightradius;
1207         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
1208         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
1209         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
1210         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
1211         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
1212         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
1213         if (ent->model == NULL)
1214         {
1215                 VectorCopy(info.lightmins, outmins);
1216                 VectorCopy(info.lightmaxs, outmaxs);
1217                 *outnumleafspointer = 0;
1218                 *outnumsurfacespointer = 0;
1219                 return;
1220         }
1221         info.model = ent->model;
1222         info.outleaflist = outleaflist;
1223         info.outleafpvs = outleafpvs;
1224         info.outnumleafs = 0;
1225         info.visitingleafpvs = visitingleafpvs;
1226         info.outsurfacelist = outsurfacelist;
1227         info.outsurfacepvs = outsurfacepvs;
1228         info.outshadowtrispvs = outshadowtrispvs;
1229         info.outlighttrispvs = outlighttrispvs;
1230         info.outnumsurfaces = 0;
1231         info.numfrustumplanes = numfrustumplanes;
1232         info.frustumplanes = frustumplanes;
1233         VectorCopy(info.relativelightorigin, info.outmins);
1234         VectorCopy(info.relativelightorigin, info.outmaxs);
1235         memset(visitingleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1236         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
1237         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
1238         if (info.model->brush.shadowmesh)
1239                 memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
1240         else
1241                 memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1242         memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
1243         if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
1244                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
1245         else
1246                 info.pvs = NULL;
1247         RSurf_ActiveWorldEntity();
1248
1249         if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer && info.model->brush.data_portals)
1250         {
1251                 // use portal recursion for exact light volume culling, and exact surface checking
1252                 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);
1253         }
1254         else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer && info.model->brush.data_portals)
1255         {
1256                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
1257                 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);
1258         }
1259         else
1260         {
1261                 // recurse the bsp tree, checking leafs and surfaces for visibility
1262                 // optionally using svbsp for exact culling of compiled lights
1263                 // (or if the user enables dlight svbsp culling, which is mostly for
1264                 //  debugging not actual use)
1265                 R_Q1BSP_CallRecursiveGetLightInfo(&info, (r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer) != 0);
1266         }
1267
1268         rsurface.entity = NULL; // used only by R_GetCurrentTexture and RSurf_ActiveWorldEntity/RSurf_ActiveModelEntity
1269
1270         // limit combined leaf box to light boundaries
1271         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
1272         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
1273         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
1274         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
1275         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
1276         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
1277
1278         *outnumleafspointer = info.outnumleafs;
1279         *outnumsurfacespointer = info.outnumsurfaces;
1280
1281         // now sort surfaces by texture for faster rendering
1282         r_q1bsp_getlightinfo_surfaces = info.model->data_surfaces;
1283         if (r_shadow_sortsurfaces.integer)
1284                 qsort(info.outsurfacelist, info.outnumsurfaces, sizeof(*info.outsurfacelist), R_Q1BSP_GetLightInfo_comparefunc);
1285 }
1286
1287 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1288 {
1289         dp_model_t *model = ent->model;
1290         msurface_t *surface;
1291         int surfacelistindex;
1292         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
1293         // if triangle neighbors are disabled, shadowvolumes are disabled
1294         if (!model->brush.shadowmesh->neighbor3i)
1295                 return;
1296         r_shadow_compilingrtlight->static_meshchain_shadow_zfail = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
1297         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1298         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1299         {
1300                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1301                 if (surface->texture->basematerialflags & MATERIALFLAG_NOSHADOW)
1302                         continue;
1303                 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);
1304         }
1305         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);
1306         r_shadow_compilingrtlight->static_meshchain_shadow_zfail = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_zfail, false, false, true);
1307 }
1308
1309 extern cvar_t r_polygonoffset_submodel_factor;
1310 extern cvar_t r_polygonoffset_submodel_offset;
1311 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)
1312 {
1313         dp_model_t *model = ent->model;
1314         const msurface_t *surface;
1315         int modelsurfacelistindex;
1316         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
1317         // check the box in modelspace, it was already checked in worldspace
1318         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1319                 return;
1320         R_FrameData_SetMark();
1321         if (ent->model->brush.submodel)
1322                 GL_PolygonOffset(r_refdef.shadowpolygonfactor + r_polygonoffset_submodel_factor.value, r_refdef.shadowpolygonoffset + r_polygonoffset_submodel_offset.value);
1323         if (model->brush.shadowmesh)
1324         {
1325                 // if triangle neighbors are disabled, shadowvolumes are disabled
1326                 if (!model->brush.shadowmesh->neighbor3i)
1327                         return;
1328                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
1329                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1330                 {
1331                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1332                         if (R_GetCurrentTexture(surface->texture)->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1333                                 continue;
1334                         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);
1335                 }
1336                 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);
1337         }
1338         else
1339         {
1340                 // if triangle neighbors are disabled, shadowvolumes are disabled
1341                 if (!model->surfmesh.data_neighbor3i)
1342                         return;
1343                 projectdistance = lightradius + model->radius*2;
1344                 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
1345                 // identify lit faces within the bounding box
1346                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1347                 {
1348                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1349                         rsurface.texture = R_GetCurrentTexture(surface->texture);
1350                         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1351                                 continue;
1352                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface.modelvertex3f, rsurface.modelelement3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
1353                 }
1354                 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);
1355         }
1356         if (ent->model->brush.submodel)
1357                 GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);
1358         R_FrameData_ReturnToMark();
1359 }
1360
1361 void R_Q1BSP_CompileShadowMap(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
1362 {
1363         dp_model_t *model = ent->model;
1364         msurface_t *surface;
1365         int surfacelistindex;
1366         int sidetotals[6] = { 0, 0, 0, 0, 0, 0 }, sidemasks = 0;
1367         int i;
1368         if (!model->brush.shadowmesh)
1369                 return;
1370         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
1371         R_Shadow_PrepareShadowSides(model->brush.shadowmesh->numtriangles);
1372         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
1373         {
1374                 surface = model->data_surfaces + surfacelist[surfacelistindex];
1375                 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);
1376         }
1377         R_Shadow_ShadowMapFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, numshadowsides, sidetotals, shadowsides, shadowsideslist);
1378         r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow_shadowmap, false, false, true);
1379         r_shadow_compilingrtlight->static_shadowmap_receivers &= sidemasks;
1380         for(i = 0;i<6;i++)
1381                 if(!sidetotals[i])
1382                         r_shadow_compilingrtlight->static_shadowmap_casters &= ~(1 << i);
1383 }
1384
1385 #define RSURF_MAX_BATCHSURFACES 8192
1386
1387 static const msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
1388
1389 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)
1390 {
1391         dp_model_t *model = ent->model;
1392         const msurface_t *surface;
1393         int modelsurfacelistindex, batchnumsurfaces;
1394         // check the box in modelspace, it was already checked in worldspace
1395         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
1396                 return;
1397         R_FrameData_SetMark();
1398         // identify lit faces within the bounding box
1399         for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
1400         {
1401                 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1402                 if (surfacesides && !(surfacesides[modelsurfacelistindex] && (1 << side)))
1403                         continue;
1404                 rsurface.texture = R_GetCurrentTexture(surface->texture);
1405                 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
1406                         continue;
1407                 if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1408                         continue;
1409                 r_refdef.stats.lights_dynamicshadowtriangles += surface->num_triangles;
1410                 r_refdef.stats.lights_shadowtriangles += surface->num_triangles;
1411                 batchsurfacelist[0] = surface;
1412                 batchnumsurfaces = 1;
1413                 while(++modelsurfacelistindex < modelnumsurfaces && batchnumsurfaces < RSURF_MAX_BATCHSURFACES)
1414                 {
1415                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
1416                         if (surfacesides && !(surfacesides[modelsurfacelistindex] & (1 << side)))
1417                                 continue;
1418                         if (surface->texture != batchsurfacelist[0]->texture)
1419                                 break;
1420                         if (!BoxesOverlap(lightmins, lightmaxs, surface->mins, surface->maxs))
1421                                 continue;
1422                         r_refdef.stats.lights_dynamicshadowtriangles += surface->num_triangles;
1423                         r_refdef.stats.lights_shadowtriangles += surface->num_triangles;
1424                         batchsurfacelist[batchnumsurfaces++] = surface;
1425                 }
1426                 --modelsurfacelistindex;
1427                 GL_CullFace(rsurface.texture->currentmaterialflags & MATERIALFLAG_NOCULLFACE ? GL_NONE : r_refdef.view.cullface_back);
1428                 RSurf_PrepareVerticesForBatch(BATCHNEED_ARRAY_VERTEX, batchnumsurfaces, batchsurfacelist);
1429                 if (rsurface.batchvertex3fbuffer)
1430                         R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3fbuffer);
1431                 else
1432                         R_Mesh_PrepareVertices_Vertex3f(rsurface.batchnumvertices, rsurface.batchvertex3f, rsurface.batchvertex3f_vertexbuffer);
1433                 RSurf_DrawBatch();
1434         }
1435         R_FrameData_ReturnToMark();
1436 }
1437
1438 #define BATCHSIZE 1024
1439
1440 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
1441 {
1442         int i, j, endsurface;
1443         texture_t *t;
1444         const msurface_t *surface;
1445         R_FrameData_SetMark();
1446         // note: in practice this never actually receives batches
1447         R_Shadow_RenderMode_Begin();
1448         R_Shadow_RenderMode_ActiveLight(rtlight);
1449         R_Shadow_RenderMode_Lighting(false, true, false);
1450         R_Shadow_SetupEntityLight(ent);
1451         for (i = 0;i < numsurfaces;i = j)
1452         {
1453                 j = i + 1;
1454                 surface = rsurface.modelsurfaces + surfacelist[i];
1455                 t = surface->texture;
1456                 rsurface.texture = R_GetCurrentTexture(t);
1457                 endsurface = min(j + BATCHSIZE, numsurfaces);
1458                 for (j = i;j < endsurface;j++)
1459                 {
1460                         surface = rsurface.modelsurfaces + surfacelist[j];
1461                         if (t != surface->texture)
1462                                 break;
1463                         R_Shadow_RenderLighting(1, &surface);
1464                 }
1465         }
1466         R_Shadow_RenderMode_End();
1467         R_FrameData_ReturnToMark();
1468 }
1469
1470 extern qboolean r_shadow_usingdeferredprepass;
1471 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *lighttrispvs)
1472 {
1473         dp_model_t *model = ent->model;
1474         const msurface_t *surface;
1475         int i, k, kend, l, endsurface, batchnumsurfaces, texturenumsurfaces;
1476         const msurface_t **texturesurfacelist;
1477         texture_t *tex;
1478         CHECKGLERROR
1479         R_FrameData_SetMark();
1480         // this is a double loop because non-visible surface skipping has to be
1481         // fast, and even if this is not the world model (and hence no visibility
1482         // checking) the input surface list and batch buffer are different formats
1483         // so some processing is necessary.  (luckily models have few surfaces)
1484         for (i = 0;i < numsurfaces;)
1485         {
1486                 batchnumsurfaces = 0;
1487                 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1488                 if (ent == r_refdef.scene.worldentity)
1489                 {
1490                         for (;i < endsurface;i++)
1491                                 if (r_refdef.viewcache.world_surfacevisible[surfacelist[i]])
1492                                         batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1493                 }
1494                 else
1495                 {
1496                         for (;i < endsurface;i++)
1497                                 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1498                 }
1499                 if (!batchnumsurfaces)
1500                         continue;
1501                 for (k = 0;k < batchnumsurfaces;k = kend)
1502                 {
1503                         surface = batchsurfacelist[k];
1504                         tex = surface->texture;
1505                         rsurface.texture = R_GetCurrentTexture(tex);
1506                         // gather surfaces into a batch range
1507                         for (kend = k;kend < batchnumsurfaces && tex == batchsurfacelist[kend]->texture;kend++)
1508                                 ;
1509                         // now figure out what to do with this particular range of surfaces
1510                         // VorteX: added MATERIALFLAG_NORTLIGHT
1511                         if ((rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_FULLBRIGHT | MATERIALFLAG_NORTLIGHT)) != MATERIALFLAG_WALL)
1512                                 continue;
1513                         if (r_fb.water.renderingscene && (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WATERSHADER | MATERIALFLAG_REFRACTION | MATERIALFLAG_REFLECTION | MATERIALFLAG_CAMERA)))
1514                                 continue;
1515                         if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1516                         {
1517                                 vec3_t tempcenter, center;
1518                                 for (l = k;l < kend;l++)
1519                                 {
1520                                         surface = batchsurfacelist[l];
1521                                         tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1522                                         tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1523                                         tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1524                                         Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
1525                                         R_MeshQueue_AddTransparent(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_refdef.view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface.modelsurfaces, rsurface.rtlight);
1526                                 }
1527                                 continue;
1528                         }
1529                         if (r_shadow_usingdeferredprepass)
1530                                 continue;
1531                         texturenumsurfaces = kend - k;
1532                         texturesurfacelist = batchsurfacelist + k;
1533                         R_Shadow_RenderLighting(texturenumsurfaces, texturesurfacelist);
1534                 }
1535         }
1536         R_FrameData_ReturnToMark();
1537 }
1538
1539 //Made by [515]
1540 static void R_ReplaceWorldTexture (void)
1541 {
1542         dp_model_t              *m;
1543         texture_t       *t;
1544         int                     i;
1545         const char      *r, *newt;
1546         skinframe_t *skinframe;
1547         if (!r_refdef.scene.worldmodel)
1548         {
1549                 Con_Printf("There is no worldmodel\n");
1550                 return;
1551         }
1552         m = r_refdef.scene.worldmodel;
1553
1554         if(Cmd_Argc() < 2)
1555         {
1556                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1557                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1558                 return;
1559         }
1560         if(!cl.islocalgame || !cl.worldmodel)
1561         {
1562                 Con_Print("This command works only in singleplayer\n");
1563                 return;
1564         }
1565         r = Cmd_Argv(1);
1566         newt = Cmd_Argv(2);
1567         if(!newt[0])
1568                 newt = r;
1569         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1570         {
1571                 if(/*t->width && !strcasecmp(t->name, r)*/ matchpattern( t->name, r, true ) )
1572                 {
1573                         if ((skinframe = R_SkinFrame_LoadExternal(newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PICMIP, true)))
1574                         {
1575 //                              t->skinframes[0] = skinframe;
1576                                 t->currentskinframe = skinframe;
1577                                 t->currentskinframe = skinframe;
1578                                 Con_Printf("%s replaced with %s\n", r, newt);
1579                         }
1580                         else
1581                         {
1582                                 Con_Printf("%s was not found\n", newt);
1583                                 return;
1584                         }
1585                 }
1586         }
1587 }
1588
1589 //Made by [515]
1590 static void R_ListWorldTextures (void)
1591 {
1592         dp_model_t              *m;
1593         texture_t       *t;
1594         int                     i;
1595         if (!r_refdef.scene.worldmodel)
1596         {
1597                 Con_Printf("There is no worldmodel\n");
1598                 return;
1599         }
1600         m = r_refdef.scene.worldmodel;
1601
1602         Con_Print("Worldmodel textures :\n");
1603         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1604                 if (t->numskinframes)
1605                         Con_Printf("%s\n", t->name);
1606 }
1607
1608 #if 0
1609 static void gl_surf_start(void)
1610 {
1611 }
1612
1613 static void gl_surf_shutdown(void)
1614 {
1615 }
1616
1617 static void gl_surf_newmap(void)
1618 {
1619 }
1620 #endif
1621
1622 void GL_Surf_Init(void)
1623 {
1624
1625         Cvar_RegisterVariable(&r_ambient);
1626         Cvar_RegisterVariable(&r_lockpvs);
1627         Cvar_RegisterVariable(&r_lockvisibility);
1628         Cvar_RegisterVariable(&r_useportalculling);
1629         Cvar_RegisterVariable(&r_usesurfaceculling);
1630         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1631
1632         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");
1633         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");
1634
1635         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1636 }
1637