gl_rsurf.c

   1 /*
   2 Copyright (C) 1996-1997 Id Software, Inc.
   3
   4 This program is free software; you can redistribute it and/or
   5 modify it under the terms of the GNU General Public License
   6 as published by the Free Software Foundation; either version 2
   7 of the License, or (at your option) any later version.
   8
   9 This program is distributed in the hope that it will be useful,
  10 but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  12
  13 See the GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18
  19 */
  20 // r_surf.c: surface-related refresh code
  21
  22 #include "quakedef.h"
  23 #include "r_shadow.h"
  24 #include "portals.h"
  25
  26 #define MAX_LIGHTMAP_SIZE 256
  27
  28 cvar_t r_ambient = {0, "r_ambient", "0", "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", "1", "use advanced portal culling visibility method to improve performance over just Potentially Visible Set, provides an even more significant speed improvement in unvised maps"};
  32 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"};
  33
  34 /*
  35 ===============
  36 R_BuildLightMap
  37
  38 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  39 ===============
  40 */
  41 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  42 {
  43         int smax, tmax, i, size, size3, maps, l;
  44         int *bl, scale;
  45         unsigned char *lightmap, *out, *stain;
  46         model_t *model = ent->model;
  47         int *intblocklights;
  48         unsigned char *templight;
  49
  50         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  51         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  52         size = smax*tmax;
  53         size3 = size*3;
  54
  55         if (cl.buildlightmapmemorysize < size*sizeof(int[3]))
  56         {
  57                 cl.buildlightmapmemorysize = size*sizeof(int[3]);
  58                 if (cl.buildlightmapmemory)
  59                         Mem_Free(cl.buildlightmapmemory);
  60                 cl.buildlightmapmemory = Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
  61         }
  62
  63         // these both point at the same buffer, templight is only used for final
  64         // processing and can replace the intblocklights data as it goes
  65         intblocklights = (int *)cl.buildlightmapmemory;
  66         templight = (unsigned char *)cl.buildlightmapmemory;
  67
  68         // update cached lighting info
  69         surface->cached_dlight = 0;
  70
  71         lightmap = surface->lightmapinfo->samples;
  72
  73 // set to full bright if no light data
  74         bl = intblocklights;
  75         if (!model->brushq1.lightdata)
  76         {
  77                 for (i = 0;i < size3;i++)
  78                         bl[i] = 128*256;
  79         }
  80         else
  81         {
  82 // clear to no light
  83                 memset(bl, 0, size3*sizeof(*bl));
  84
  85 // add all the lightmaps
  86                 if (lightmap)
  87                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  88                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  89                                         bl[i] += lightmap[i] * scale;
  90         }
  91
  92         stain = surface->lightmapinfo->stainsamples;
  93         bl = intblocklights;
  94         out = templight;
  95         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  96         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  97         // be doubled during rendering to achieve 2x overbright
  98         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  99         for (i = 0;i < size;i++, bl += 3, stain += 3, out += 4)
 100         {
 101                 l = (bl[0] * stain[0]) >> 16;out[2] = min(l, 255);
 102                 l = (bl[1] * stain[1]) >> 16;out[1] = min(l, 255);
 103                 l = (bl[2] * stain[2]) >> 16;out[0] = min(l, 255);
 104                 out[3] = 255;
 105         }
 106
 107         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 108
 109         // update the surface's deluxemap if it has one
 110         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 111         {
 112                 vec3_t n;
 113                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 114                 lightmap = surface->lightmapinfo->samples;
 115                 // clear to no normalmap
 116                 bl = intblocklights;
 117                 memset(bl, 0, size3*sizeof(*bl));
 118                 // add all the normalmaps
 119                 if (lightmap && normalmap)
 120                 {
 121                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 122                         {
 123                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 124                                 {
 125                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 126                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 127                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 128                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 129                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 130                                 }
 131                         }
 132                 }
 133                 bl = intblocklights;
 134                 out = templight;
 135                 // we simply renormalize the weighted normals to get a valid deluxemap
 136                 for (i = 0;i < size;i++, bl += 3, out += 4)
 137                 {
 138                         VectorCopy(bl, n);
 139                         VectorNormalize(n);
 140                         l = (int)(n[0] * 128 + 128);out[2] = bound(0, l, 255);
 141                         l = (int)(n[1] * 128 + 128);out[1] = bound(0, l, 255);
 142                         l = (int)(n[2] * 128 + 128);out[0] = bound(0, l, 255);
 143                         out[3] = 255;
 144                 }
 145                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 146         }
 147 }
 148
 149 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 150 {
 151         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 152         msurface_t *surface, *endsurface;
 153         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 154         unsigned char *bl;
 155         vec3_t impact;
 156
 157         maxdist = radius * radius;
 158         invradius = 1.0f / radius;
 159
 160 loc0:
 161         if (!node->plane)
 162                 return;
 163         ndist = PlaneDiff(origin, node->plane);
 164         if (ndist > radius)
 165         {
 166                 node = node->children[0];
 167                 goto loc0;
 168         }
 169         if (ndist < -radius)
 170         {
 171                 node = node->children[1];
 172                 goto loc0;
 173         }
 174
 175         dist2 = ndist * ndist;
 176         maxdist3 = maxdist - dist2;
 177
 178         if (node->plane->type < 3)
 179         {
 180                 VectorCopy(origin, impact);
 181                 impact[node->plane->type] -= ndist;
 182         }
 183         else
 184         {
 185                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 186                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 187                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 188         }
 189
 190         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 191         {
 192                 if (surface->lightmapinfo->stainsamples)
 193                 {
 194                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 195                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 196
 197                         impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
 198                         impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 199
 200                         s = bound(0, impacts, smax * 16) - impacts;
 201                         t = bound(0, impactt, tmax * 16) - impactt;
 202                         i = (int)(s * s + t * t + dist2);
 203                         if (i > maxdist)
 204                                 continue;
 205
 206                         // reduce calculations
 207                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 208                                 sdtable[s] = i * i + dist2;
 209
 210                         bl = surface->lightmapinfo->stainsamples;
 211                         smax3 = smax * 3;
 212                         stained = false;
 213
 214                         i = impactt;
 215                         for (t = 0;t < tmax;t++, i -= 16)
 216                         {
 217                                 td = i * i;
 218                                 // make sure some part of it is visible on this line
 219                                 if (td < maxdist3)
 220                                 {
 221                                         maxdist2 = maxdist - td;
 222                                         for (s = 0;s < smax;s++)
 223                                         {
 224                                                 if (sdtable[s] < maxdist2)
 225                                                 {
 226                                                         ratio = lhrandom(0.0f, 1.0f);
 227                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 228                                                         if (a >= (1.0f / 64.0f))
 229                                                         {
 230                                                                 if (a > 1)
 231                                                                         a = 1;
 232                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 233                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 234                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 235                                                                 stained = true;
 236                                                         }
 237                                                 }
 238                                                 bl += 3;
 239                                         }
 240                                 }
 241                                 else // skip line
 242                                         bl += smax3;
 243                         }
 244                         // force lightmap upload
 245                         if (stained)
 246                                 surface->cached_dlight = true;
 247                 }
 248         }
 249
 250         if (node->children[0]->plane)
 251         {
 252                 if (node->children[1]->plane)
 253                 {
 254                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 255                         node = node->children[1];
 256                         goto loc0;
 257                 }
 258                 else
 259                 {
 260                         node = node->children[0];
 261                         goto loc0;
 262                 }
 263         }
 264         else if (node->children[1]->plane)
 265         {
 266                 node = node->children[1];
 267                 goto loc0;
 268         }
 269 }
 270
 271 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)
 272 {
 273         int n;
 274         float fcolor[8];
 275         entity_render_t *ent;
 276         model_t *model;
 277         vec3_t org;
 278         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 279                 return;
 280         fcolor[0] = cr1;
 281         fcolor[1] = cg1;
 282         fcolor[2] = cb1;
 283         fcolor[3] = ca1 * (1.0f / 64.0f);
 284         fcolor[4] = cr2 - cr1;
 285         fcolor[5] = cg2 - cg1;
 286         fcolor[6] = cb2 - cb1;
 287         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 288
 289         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 290
 291         // look for embedded bmodels
 292         for (n = 0;n < cl.num_brushmodel_entities;n++)
 293         {
 294                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 295                 model = ent->model;
 296                 if (model && model->name[0] == '*')
 297                 {
 298                         if (model->brush.data_nodes)
 299                         {
 300                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 301                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 302                         }
 303                 }
 304         }
 305 }
 306
 307
 308 /*
 309 =============================================================
 310
 311         BRUSH MODELS
 312
 313 =============================================================
 314 */
 315
 316 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 317 {
 318         // due to the hacky nature of this function's parameters, this is never
 319         // called with a batch, so numsurfaces is always 1, and the surfacelist
 320         // contains only a leaf number for coloring purposes
 321         const mportal_t *portal = (mportal_t *)ent;
 322         int i, numpoints;
 323         float *v;
 324         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 325         CHECKGLERROR
 326         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 327         GL_DepthMask(false);
 328         GL_DepthRange(0, 1);
 329         GL_PolygonOffset(r_refdef.polygonfactor, r_refdef.polygonoffset);
 330         GL_DepthTest(true);
 331         GL_CullFace(GL_NONE);
 332         R_Mesh_Matrix(&identitymatrix);
 333
 334         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 335
 336         R_Mesh_VertexPointer(vertex3f, 0, 0);
 337         R_Mesh_ColorPointer(NULL, 0, 0);
 338         R_Mesh_ResetTextureState();
 339
 340         i = surfacelist[0];
 341         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_view.colorscale,
 342                          ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_view.colorscale,
 343                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_view.colorscale,
 344                          0.125f);
 345         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 346                 VectorCopy(portal->points[i].position, v);
 347         R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements, 0, 0);
 348 }
 349
 350 // LordHavoc: this is just a nice debugging tool, very slow
 351 void R_DrawPortals(void)
 352 {
 353         int i, leafnum;
 354         mportal_t *portal;
 355         float center[3], f;
 356         model_t *model = r_refdef.worldmodel;
 357         if (model == NULL)
 358                 return;
 359         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 360         {
 361                 if (r_viewcache.world_leafvisible[leafnum])
 362                 {
 363                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 364                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 365                         {
 366                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 367                                 if (!R_CullBox(portal->mins, portal->maxs))
 368                                 {
 369                                         VectorClear(center);
 370                                         for (i = 0;i < portal->numpoints;i++)
 371                                                 VectorAdd(center, portal->points[i].position, center);
 372                                         f = ixtable[portal->numpoints];
 373                                         VectorScale(center, f, center);
 374                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, rsurface.rtlight);
 375                                 }
 376                         }
 377                 }
 378         }
 379 }
 380
 381 void R_View_WorldVisibility(qboolean forcenovis)
 382 {
 383         int i, j, *mark;
 384         mleaf_t *leaf;
 385         mleaf_t *viewleaf;
 386         model_t *model = r_refdef.worldmodel;
 387
 388         if (!model)
 389                 return;
 390
 391         if (r_view.usecustompvs)
 392         {
 393                 // clear the visible surface and leaf flags arrays
 394                 memset(r_viewcache.world_surfacevisible, 0, model->num_surfaces);
 395                 memset(r_viewcache.world_leafvisible, 0, model->brush.num_leafs);
 396                 r_viewcache.world_novis = false;
 397
 398                 // simply cull each marked leaf to the frustum (view pyramid)
 399                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 400                 {
 401                         // if leaf is in current pvs and on the screen, mark its surfaces
 402                         if (CHECKPVSBIT(r_viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 403                         {
 404                                 r_refdef.stats.world_leafs++;
 405                                 r_viewcache.world_leafvisible[j] = true;
 406                                 if (leaf->numleafsurfaces)
 407                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 408                                                 r_viewcache.world_surfacevisible[*mark] = true;
 409                         }
 410                 }
 411                 return;
 412         }
 413
 414         // if possible find the leaf the view origin is in
 415         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_view.origin) : NULL;
 416         // if possible fetch the visible cluster bits
 417         if (!r_lockpvs.integer && model->brush.FatPVS)
 418                 model->brush.FatPVS(model, r_view.origin, 2, r_viewcache.world_pvsbits, sizeof(r_viewcache.world_pvsbits), false);
 419
 420         if (!r_lockvisibility.integer)
 421         {
 422                 // clear the visible surface and leaf flags arrays
 423                 memset(r_viewcache.world_surfacevisible, 0, model->num_surfaces);
 424                 memset(r_viewcache.world_leafvisible, 0, model->brush.num_leafs);
 425
 426                 r_viewcache.world_novis = false;
 427
 428                 // if floating around in the void (no pvs data available, and no
 429                 // portals available), simply use all on-screen leafs.
 430                 if (!viewleaf || viewleaf->clusterindex < 0 || forcenovis)
 431                 {
 432                         // no visibility method: (used when floating around in the void)
 433                         // simply cull each leaf to the frustum (view pyramid)
 434                         // similar to quake's RecursiveWorldNode but without cache misses
 435                         r_viewcache.world_novis = true;
 436                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 437                         {
 438                                 // if leaf is in current pvs and on the screen, mark its surfaces
 439                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 440                                 {
 441                                         r_refdef.stats.world_leafs++;
 442                                         r_viewcache.world_leafvisible[j] = true;
 443                                         if (leaf->numleafsurfaces)
 444                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 445                                                         r_viewcache.world_surfacevisible[*mark] = true;
 446                                 }
 447                         }
 448                 }
 449                 // if the user prefers to disable portal culling (testing?), simply
 450                 // use all on-screen leafs that are in the pvs.
 451                 else if (!r_useportalculling.integer)
 452                 {
 453                         // pvs method:
 454                         // simply check if each leaf is in the Potentially Visible Set,
 455                         // and cull to frustum (view pyramid)
 456                         // similar to quake's RecursiveWorldNode but without cache misses
 457                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 458                         {
 459                                 // if leaf is in current pvs and on the screen, mark its surfaces
 460                                 if (CHECKPVSBIT(r_viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 461                                 {
 462                                         r_refdef.stats.world_leafs++;
 463                                         r_viewcache.world_leafvisible[j] = true;
 464                                         if (leaf->numleafsurfaces)
 465                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 466                                                         r_viewcache.world_surfacevisible[*mark] = true;
 467                                 }
 468                         }
 469                 }
 470                 // otherwise use a recursive portal flow, culling each portal to
 471                 // frustum and checking if the leaf the portal leads to is in the pvs
 472                 else
 473                 {
 474                         int leafstackpos;
 475                         mportal_t *p;
 476                         mleaf_t *leafstack[8192];
 477                         // simple-frustum portal method:
 478                         // follows portals leading outward from viewleaf, does not venture
 479                         // offscreen or into leafs that are not visible, faster than
 480                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 481                         // often culls some surfaces that pvs alone would miss
 482                         // (such as a room in pvs that is hidden behind a wall, but the
 483                         //  passage leading to the room is off-screen)
 484                         leafstack[0] = viewleaf;
 485                         leafstackpos = 1;
 486                         while (leafstackpos)
 487                         {
 488                                 leaf = leafstack[--leafstackpos];
 489                                 if (r_viewcache.world_leafvisible[leaf - model->brush.data_leafs])
 490                                         continue;
 491                                 r_refdef.stats.world_leafs++;
 492                                 r_viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 493                                 // mark any surfaces bounding this leaf
 494                                 if (leaf->numleafsurfaces)
 495                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 496                                                 r_viewcache.world_surfacevisible[*mark] = true;
 497                                 // follow portals into other leafs
 498                                 // the checks are:
 499                                 // if viewer is behind portal (portal faces outward into the scene)
 500                                 // and the portal polygon's bounding box is on the screen
 501                                 // and the leaf has not been visited yet
 502                                 // and the leaf is visible in the pvs
 503                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 504                                 for (p = leaf->portals;p;p = p->next)
 505                                 {
 506                                         r_refdef.stats.world_portals++;
 507                                         if (DotProduct(r_view.origin, p->plane.normal) < (p->plane.dist + 1)
 508                                          && !r_viewcache.world_leafvisible[p->past - model->brush.data_leafs]
 509                                          && CHECKPVSBIT(r_viewcache.world_pvsbits, p->past->clusterindex)
 510                                          && !R_CullBox(p->mins, p->maxs)
 511                                          && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
 512                                                 leafstack[leafstackpos++] = p->past;
 513                                 }
 514                         }
 515                 }
 516         }
 517 }
 518
 519 void R_Q1BSP_DrawSky(entity_render_t *ent)
 520 {
 521         if (ent->model == NULL)
 522                 return;
 523         if (ent == r_refdef.worldentity)
 524                 R_DrawWorldSurfaces(true, true, false, false, false);
 525         else
 526                 R_DrawModelSurfaces(ent, true, true, false, false, false);
 527 }
 528
 529 void R_Q1BSP_DrawAddWaterPlanes(entity_render_t *ent)
 530 {
 531         model_t *model = ent->model;
 532         if (model == NULL)
 533                 return;
 534         if (ent == r_refdef.worldentity)
 535                 R_DrawWorldSurfaces(false, false, false, true, false);
 536         else
 537                 R_DrawModelSurfaces(ent, false, false, false, true, false);
 538 }
 539
 540 void R_Q1BSP_Draw(entity_render_t *ent)
 541 {
 542         model_t *model = ent->model;
 543         if (model == NULL)
 544                 return;
 545         if (ent == r_refdef.worldentity)
 546                 R_DrawWorldSurfaces(false, true, false, false, false);
 547         else
 548                 R_DrawModelSurfaces(ent, false, true, false, false, false);
 549 }
 550
 551 void R_Q1BSP_DrawDepth(entity_render_t *ent)
 552 {
 553         model_t *model = ent->model;
 554         if (model == NULL)
 555                 return;
 556         if (ent == r_refdef.worldentity)
 557                 R_DrawWorldSurfaces(false, false, true, false, false);
 558         else
 559                 R_DrawModelSurfaces(ent, false, false, true, false, false);
 560 }
 561
 562 void R_Q1BSP_DrawDebug(entity_render_t *ent)
 563 {
 564         if (ent->model == NULL)
 565                 return;
 566         if (ent == r_refdef.worldentity)
 567                 R_DrawWorldSurfaces(false, false, false, false, true);
 568         else
 569                 R_DrawModelSurfaces(ent, false, false, false, false, true);
 570 }
 571
 572 typedef struct r_q1bsp_getlightinfo_s
 573 {
 574         model_t *model;
 575         vec3_t relativelightorigin;
 576         float lightradius;
 577         int *outleaflist;
 578         unsigned char *outleafpvs;
 579         int outnumleafs;
 580         int *outsurfacelist;
 581         unsigned char *outsurfacepvs;
 582         unsigned char *tempsurfacepvs;
 583         unsigned char *outshadowtrispvs;
 584         unsigned char *outlighttrispvs;
 585         int outnumsurfaces;
 586         vec3_t outmins;
 587         vec3_t outmaxs;
 588         vec3_t lightmins;
 589         vec3_t lightmaxs;
 590         const unsigned char *pvs;
 591         qboolean svbsp_active;
 592         qboolean svbsp_insertoccluder;
 593 }
 594 r_q1bsp_getlightinfo_t;
 595
 596 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 597 {
 598         int sides;
 599         mleaf_t *leaf;
 600         for (;;)
 601         {
 602                 mplane_t *plane = node->plane;
 603                 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 604                 //      return;
 605                 if (!plane)
 606                         break;
 607                 //if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rsurface.rtlight_numfrustumplanes, rsurface.rtlight_frustumplanes))
 608                 //      return;
 609                 if (plane->type < 3)
 610                 {
 611                         if (info->lightmins[plane->type] > plane->dist)
 612                                 node = node->children[0];
 613                         else if (info->lightmaxs[plane->type] < plane->dist)
 614                                 node = node->children[1];
 615                         else if (info->relativelightorigin[plane->type] >= plane->dist)
 616                         {
 617                                 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 618                                 node = node->children[1];
 619                         }
 620                         else
 621                         {
 622                                 R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
 623                                 node = node->children[0];
 624                         }
 625                 }
 626                 else
 627                 {
 628                         sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 629                         if (sides == 3)
 630                         {
 631                                 // recurse front side first because the svbsp building prefers it
 632                                 if (PlaneDist(info->relativelightorigin, plane) >= 0)
 633                                 {
 634                                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 635                                         node = node->children[1];
 636                                 }
 637                                 else
 638                                 {
 639                                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
 640                                         node = node->children[0];
 641                                 }
 642                         }
 643                         else if (sides == 0)
 644                                 return; // ERROR: NAN bounding box!
 645                         else
 646                                 node = node->children[sides - 1];
 647                 }
 648         }
 649         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rsurface.rtlight_numfrustumplanes, rsurface.rtlight_frustumplanes))
 650                 return;
 651         leaf = (mleaf_t *)node;
 652         if (info->svbsp_active)
 653         {
 654                 int i;
 655                 mportal_t *portal;
 656                 double points[128][3];
 657                 for (portal = leaf->portals;portal;portal = portal->next)
 658                 {
 659                         for (i = 0;i < portal->numpoints;i++)
 660                                 VectorCopy(portal->points[i].position, points[i]);
 661                         if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
 662                                 break;
 663                 }
 664                 if (portal == NULL)
 665                         return; // no portals of this leaf visible
 666         }
 667         else
 668         {
 669                 if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
 670                         return;
 671         }
 672         // inserting occluders does not alter the leaf info
 673         if (!info->svbsp_insertoccluder)
 674         {
 675                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 676                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 677                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 678                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 679                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 680                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 681                 if (info->outleafpvs)
 682                 {
 683                         int leafindex = leaf - info->model->brush.data_leafs;
 684                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 685                         {
 686                                 SETPVSBIT(info->outleafpvs, leafindex);
 687                                 info->outleaflist[info->outnumleafs++] = leafindex;
 688                         }
 689                 }
 690         }
 691         if (info->outsurfacepvs)
 692         {
 693                 int leafsurfaceindex;
 694                 int surfaceindex;
 695                 int triangleindex, t;
 696                 msurface_t *surface;
 697                 const int *e;
 698                 const vec_t *v[3];
 699                 double v2[3][3];
 700                 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 701                 {
 702                         surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 703                         if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 704                         {
 705                                 surface = info->model->data_surfaces + surfaceindex;
 706                                 if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs)
 707                                  && (!info->svbsp_insertoccluder || !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)))
 708                                 {
 709                                         qboolean addedtris = false;
 710                                         qboolean insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 711                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 712                                         {
 713                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 714                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 715                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 716                                                 if (insidebox || TriangleOverlapsBox(v[0], v[1], v[2], info->lightmins, info->lightmaxs))
 717                                                 {
 718                                                         if (info->svbsp_insertoccluder)
 719                                                         {
 720                                                                 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE) && r_shadow_frontsidecasting.integer != PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
 721                                                                         continue;
 722                                                                 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
 723                                                                         continue;
 724                                                                 VectorCopy(v[0], v2[0]);
 725                                                                 VectorCopy(v[1], v2[1]);
 726                                                                 VectorCopy(v[2], v2[2]);
 727                                                                 if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0) & 2))
 728                                                                         continue;
 729                                                                 addedtris = true;
 730                                                         }
 731                                                         else
 732                                                         {
 733                                                                 if (info->svbsp_active)
 734                                                                 {
 735                                                                         VectorCopy(v[0], v2[0]);
 736                                                                         VectorCopy(v[1], v2[1]);
 737                                                                         VectorCopy(v[2], v2[2]);
 738                                                                         if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
 739                                                                                 continue;
 740                                                                 }
 741                                                                 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE)
 742                                                                 {
 743                                                                         // if the material is double sided we
 744                                                                         // can't cull by direction
 745                                                                         SETPVSBIT(info->outlighttrispvs, t);
 746                                                                         addedtris = true;
 747                                                                         if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
 748                                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 749                                                                 }
 750                                                                 else if (r_shadow_frontsidecasting.integer)
 751                                                                 {
 752                                                                         // front side casting occludes backfaces,
 753                                                                         // so they are completely useless as both
 754                                                                         // casters and lit polygons
 755                                                                         if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
 756                                                                                 continue;
 757                                                                         SETPVSBIT(info->outlighttrispvs, t);
 758                                                                         addedtris = true;
 759                                                                         if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
 760                                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 761                                                                 }
 762                                                                 else
 763                                                                 {
 764                                                                         // back side casting does not occlude
 765                                                                         // anything so we can't cull lit polygons
 766                                                                         SETPVSBIT(info->outlighttrispvs, t);
 767                                                                         addedtris = true;
 768                                                                         if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
 769                                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 770                                                                 }
 771                                                         }
 772                                                 }
 773                                         }
 774                                         if (addedtris)
 775                                         {
 776                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 777                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 778                                         }
 779                                 }
 780                         }
 781                 }
 782         }
 783 }
 784
 785 void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
 786 {
 787         if (use_svbsp)
 788         {
 789                 double origin[3];
 790                 VectorCopy(info->relativelightorigin, origin);
 791                 if (!r_svbsp.nodes)
 792                 {
 793                         r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<18);
 794                         r_svbsp.nodes = Mem_Alloc(r_main_mempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
 795                 }
 796                 info->svbsp_active = true;
 797                 info->svbsp_insertoccluder = true;
 798                 for (;;)
 799                 {
 800                         SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
 801                         R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
 802                         // if that failed, retry with more nodes
 803                         if (r_svbsp.ranoutofnodes)
 804                         {
 805                                 // an upper limit is imposed
 806                                 if (r_svbsp.maxnodes >= 2<<22)
 807                                         break;
 808                                 Mem_Free(r_svbsp.nodes);
 809                                 r_svbsp.maxnodes *= 2;
 810                                 r_svbsp.nodes = Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
 811                         }
 812                         else
 813                                 break;
 814                 }
 815                 // now clear the surfacepvs array because we need to redo it
 816                 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
 817                 info->outnumsurfaces = 0;
 818         }
 819         else
 820                 info->svbsp_active = false;
 821
 822         // we HAVE to mark the leaf the light is in as lit, because portals are
 823         // irrelevant to a leaf that the light source is inside of
 824         // (and they are all facing away, too)
 825         {
 826                 mnode_t *node = info->model->brush.data_nodes;
 827                 mleaf_t *leaf;
 828                 while (node->plane)
 829                         node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
 830                 leaf = (mleaf_t *)node;
 831                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 832                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 833                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 834                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 835                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 836                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 837                 if (info->outleafpvs)
 838                 {
 839                         int leafindex = leaf - info->model->brush.data_leafs;
 840                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 841                         {
 842                                 SETPVSBIT(info->outleafpvs, leafindex);
 843                                 info->outleaflist[info->outnumleafs++] = leafindex;
 844                         }
 845                 }
 846         }
 847
 848         info->svbsp_insertoccluder = false;
 849         R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
 850         if (developer.integer >= 100 && use_svbsp)
 851         {
 852                 Con_Printf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
 853                 Con_Printf("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);
 854                 Con_Printf("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);
 855         }
 856 }
 857
 858 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)
 859 {
 860         r_q1bsp_getlightinfo_t info;
 861         VectorCopy(relativelightorigin, info.relativelightorigin);
 862         info.lightradius = lightradius;
 863         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 864         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 865         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 866         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 867         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 868         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 869         if (ent->model == NULL)
 870         {
 871                 VectorCopy(info.lightmins, outmins);
 872                 VectorCopy(info.lightmaxs, outmaxs);
 873                 *outnumleafspointer = 0;
 874                 *outnumsurfacespointer = 0;
 875                 return;
 876         }
 877         info.model = ent->model;
 878         info.outleaflist = outleaflist;
 879         info.outleafpvs = outleafpvs;
 880         info.outnumleafs = 0;
 881         info.outsurfacelist = outsurfacelist;
 882         info.outsurfacepvs = outsurfacepvs;
 883         info.outshadowtrispvs = outshadowtrispvs;
 884         info.outlighttrispvs = outlighttrispvs;
 885         info.outnumsurfaces = 0;
 886         VectorCopy(info.relativelightorigin, info.outmins);
 887         VectorCopy(info.relativelightorigin, info.outmaxs);
 888         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 889         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 890         if (info.model->brush.shadowmesh)
 891                 memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
 892         else
 893                 memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
 894         memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
 895         if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
 896                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 897         else
 898                 info.pvs = NULL;
 899         R_UpdateAllTextureInfo(ent);
 900
 901         if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer)
 902         {
 903                 // use portal recursion for exact light volume culling, and exact surface checking
 904                 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);
 905         }
 906         else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer)
 907         {
 908                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 909                 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);
 910         }
 911         else
 912         {
 913                 // recurse the bsp tree, checking leafs and surfaces for visibility
 914                 // optionally using svbsp for exact culling of compiled lights
 915                 // (or if the user enables dlight svbsp culling, which is mostly for
 916                 //  debugging not actual use)
 917                 R_Q1BSP_CallRecursiveGetLightInfo(&info, r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer);
 918         }
 919
 920         // limit combined leaf box to light boundaries
 921         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 922         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 923         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 924         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 925         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 926         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 927
 928         *outnumleafspointer = info.outnumleafs;
 929         *outnumsurfacespointer = info.outnumsurfaces;
 930 }
 931
 932 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
 933 {
 934         model_t *model = ent->model;
 935         msurface_t *surface;
 936         int surfacelistindex;
 937         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
 938         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 939         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 940         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 941         {
 942                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 943                 if (surface->texture->currentframe->basematerialflags & MATERIALFLAG_NOSHADOW)
 944                         continue;
 945                 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);
 946         }
 947         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);
 948         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false, true);
 949 }
 950
 951 extern cvar_t r_polygonoffset_submodel_factor;
 952 extern cvar_t r_polygonoffset_submodel_offset;
 953 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
 954 {
 955         model_t *model = ent->model;
 956         msurface_t *surface;
 957         int modelsurfacelistindex;
 958         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
 959         // check the box in modelspace, it was already checked in worldspace
 960         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
 961                 return;
 962         R_UpdateAllTextureInfo(ent);
 963         if (ent->model->brush.submodel)
 964                 GL_PolygonOffset(r_refdef.shadowpolygonfactor + r_polygonoffset_submodel_factor.value, r_refdef.shadowpolygonoffset + r_polygonoffset_submodel_offset.value);
 965         if (model->brush.shadowmesh)
 966         {
 967                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 968                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 969                 {
 970                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
 971                         if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
 972                                 continue;
 973                         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);
 974                 }
 975                 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);
 976         }
 977         else
 978         {
 979                 projectdistance = lightradius + model->radius*2;
 980                 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
 981                 // identify lit faces within the bounding box
 982                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 983                 {
 984                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
 985                         rsurface.texture = surface->texture->currentframe;
 986                         if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
 987                                 continue;
 988                         RSurf_PrepareVerticesForBatch(false, false, 1, &surface);
 989                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface.vertex3f, rsurface.modelelement3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
 990                 }
 991                 R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface.vertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist);
 992         }
 993         if (ent->model->brush.submodel)
 994                 GL_PolygonOffset(r_refdef.shadowpolygonfactor, r_refdef.shadowpolygonoffset);
 995 }
 996
 997 #define BATCHSIZE 1024
 998
 999 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
1000 {
1001         int i, j, endsurface;
1002         texture_t *t;
1003         msurface_t *surface;
1004         // note: in practice this never actually receives batches), oh well
1005         R_Shadow_RenderMode_Begin();
1006         R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
1007         R_Shadow_RenderMode_Lighting(false, true);
1008         R_Shadow_SetupEntityLight(ent);
1009         for (i = 0;i < numsurfaces;i = j)
1010         {
1011                 j = i + 1;
1012                 surface = rsurface.modelsurfaces + surfacelist[i];
1013                 t = surface->texture;
1014                 R_UpdateTextureInfo(ent, t);
1015                 rsurface.texture = t->currentframe;
1016                 endsurface = min(j + BATCHSIZE, numsurfaces);
1017                 for (j = i;j < endsurface;j++)
1018                 {
1019                         surface = rsurface.modelsurfaces + surfacelist[j];
1020                         if (t != surface->texture)
1021                                 break;
1022                         RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
1023                         R_Shadow_RenderLighting(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, ent->model->surfmesh.data_element3i + surface->num_firsttriangle * 3, ent->model->surfmesh.ebo, (sizeof(int[3]) * surface->num_firsttriangle));
1024                 }
1025         }
1026         R_Shadow_RenderMode_End();
1027 }
1028
1029 #define RSURF_MAX_BATCHSURFACES 1024
1030
1031 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *trispvs)
1032 {
1033         model_t *model = ent->model;
1034         msurface_t *surface;
1035         int i, k, l, m, mend, endsurface, batchnumsurfaces, batchnumtriangles, batchfirstvertex, batchlastvertex;
1036         qboolean usebufferobject, culltriangles;
1037         const int *element3i;
1038         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
1039         int batchelements[BATCHSIZE*3];
1040         texture_t *tex;
1041         CHECKGLERROR
1042         RSurf_ActiveModelEntity(ent, true, true);
1043         R_UpdateAllTextureInfo(ent);
1044         CHECKGLERROR
1045         culltriangles = r_shadow_culltriangles.integer && !(ent->flags & RENDER_NOSELFSHADOW);
1046         element3i = rsurface.modelelement3i;
1047         // this is a double loop because non-visible surface skipping has to be
1048         // fast, and even if this is not the world model (and hence no visibility
1049         // checking) the input surface list and batch buffer are different formats
1050         // so some processing is necessary.  (luckily models have few surfaces)
1051         for (i = 0;i < numsurfaces;)
1052         {
1053                 batchnumsurfaces = 0;
1054                 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1055                 if (ent == r_refdef.worldentity)
1056                 {
1057                         for (;i < endsurface;i++)
1058                                 if (r_viewcache.world_surfacevisible[surfacelist[i]])
1059                                         batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1060                 }
1061                 else
1062                 {
1063                         for (;i < endsurface;i++)
1064                                 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1065                 }
1066                 if (!batchnumsurfaces)
1067                         continue;
1068                 for (k = 0;k < batchnumsurfaces;k = l)
1069                 {
1070                         surface = batchsurfacelist[k];
1071                         tex = surface->texture;
1072                         rsurface.texture = tex->currentframe;
1073                         if (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_WATER))
1074                         {
1075                                 if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1076                                 {
1077                                         vec3_t tempcenter, center;
1078                                         for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1079                                         {
1080                                                 surface = batchsurfacelist[l];
1081                                                 tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1082                                                 tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1083                                                 tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1084                                                 Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
1085                                                 R_MeshQueue_AddTransparent(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface.modelsurfaces, rsurface.rtlight);
1086                                         }
1087                                 }
1088                                 else
1089                                 {
1090                                         // use the bufferobject if all triangles are accepted
1091                                         usebufferobject = true;
1092                                         batchnumtriangles = 0;
1093                                         // note: this only accepts consecutive surfaces because
1094                                         // non-consecutive surfaces often have extreme vertex
1095                                         // ranges (due to large numbers of surfaces omitted
1096                                         // between them)
1097                                         surface = batchsurfacelist[k];
1098                                         for (l = k;l < batchnumsurfaces && surface == batchsurfacelist[l] && tex == surface->texture;l++, surface++)
1099                                         {
1100                                                 RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
1101                                                 for (m = surface->num_firsttriangle, mend = m + surface->num_triangles;m < mend;m++)
1102                                                 {
1103                                                         if (culltriangles)
1104                                                         {
1105                                                                 if (trispvs)
1106                                                                 {
1107                                                                         if (!CHECKPVSBIT(trispvs, m))
1108                                                                         {
1109                                                                                 usebufferobject = false;
1110                                                                                 continue;
1111                                                                         }
1112                                                                 }
1113                                                                 else
1114                                                                 {
1115                                                                         if (r_shadow_frontsidecasting.integer && !PointInfrontOfTriangle(rsurface.entitylightorigin, rsurface.vertex3f + element3i[m*3+0]*3, rsurface.vertex3f + element3i[m*3+1]*3, rsurface.vertex3f + element3i[m*3+2]*3))
1116                                                                         {
1117                                                                                 usebufferobject = false;
1118                                                                                 continue;
1119                                                                         }
1120                                                                 }
1121                                                         }
1122                                                         batchelements[batchnumtriangles*3+0] = element3i[m*3+0];
1123                                                         batchelements[batchnumtriangles*3+1] = element3i[m*3+1];
1124                                                         batchelements[batchnumtriangles*3+2] = element3i[m*3+2];
1125                                                         batchnumtriangles++;
1126                                                         r_refdef.stats.lights_lighttriangles++;
1127                                                         if (batchnumtriangles >= BATCHSIZE)
1128                                                         {
1129                                                                 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1130                                                                 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
1131                                                                 batchnumtriangles = 0;
1132                                                                 usebufferobject = false;
1133                                                         }
1134                                                 }
1135                                                 r_refdef.stats.lights_lighttriangles += batchsurfacelist[l]->num_triangles;
1136                                         }
1137                                         if (batchnumtriangles > 0)
1138                                         {
1139                                                 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1140                                                 if (usebufferobject)
1141                                                         R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, ent->model->surfmesh.ebo, sizeof(int[3]) * batchsurfacelist[k]->num_firsttriangle);
1142                                                 else
1143                                                         R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
1144                                         }
1145                                 }
1146                         }
1147                         else
1148                         {
1149                                 // skip ahead to the next texture
1150                                 for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1151                                         ;
1152                         }
1153                 }
1154         }
1155 }
1156
1157 //Made by [515]
1158 void R_ReplaceWorldTexture (void)
1159 {
1160         model_t         *m;
1161         texture_t       *t;
1162         int                     i;
1163         const char      *r, *newt;
1164         skinframe_t *skinframe;
1165         if (!r_refdef.worldmodel)
1166         {
1167                 Con_Printf("There is no worldmodel\n");
1168                 return;
1169         }
1170         m = r_refdef.worldmodel;
1171
1172         if(Cmd_Argc() < 2)
1173         {
1174                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1175                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1176                 return;
1177         }
1178         if(!cl.islocalgame || !cl.worldmodel)
1179         {
1180                 Con_Print("This command works only in singleplayer\n");
1181                 return;
1182         }
1183         r = Cmd_Argv(1);
1184         newt = Cmd_Argv(2);
1185         if(!newt[0])
1186                 newt = r;
1187         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1188         {
1189                 if(/*t->width && !strcasecmp(t->name, r)*/ matchpattern( t->name, r, true ) )
1190                 {
1191                         if ((skinframe = R_SkinFrame_LoadExternal(newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true)))
1192                         {
1193 //                              t->skinframes[0] = skinframe;
1194                                 t->currentskinframe = skinframe;
1195                                 t->currentskinframe = skinframe;
1196                                 Con_Printf("%s replaced with %s\n", r, newt);
1197                         }
1198                         else
1199                         {
1200                                 Con_Printf("%s was not found\n", newt);
1201                                 return;
1202                         }
1203                 }
1204         }
1205 }
1206
1207 //Made by [515]
1208 void R_ListWorldTextures (void)
1209 {
1210         model_t         *m;
1211         texture_t       *t;
1212         int                     i;
1213         if (!r_refdef.worldmodel)
1214         {
1215                 Con_Printf("There is no worldmodel\n");
1216                 return;
1217         }
1218         m = r_refdef.worldmodel;
1219
1220         Con_Print("Worldmodel textures :\n");
1221         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1222                 if (t->numskinframes)
1223                         Con_Printf("%s\n", t->name);
1224 }
1225
1226 #if 0
1227 static void gl_surf_start(void)
1228 {
1229 }
1230
1231 static void gl_surf_shutdown(void)
1232 {
1233 }
1234
1235 static void gl_surf_newmap(void)
1236 {
1237 }
1238 #endif
1239
1240 void GL_Surf_Init(void)
1241 {
1242
1243         Cvar_RegisterVariable(&r_ambient);
1244         Cvar_RegisterVariable(&r_lockpvs);
1245         Cvar_RegisterVariable(&r_lockvisibility);
1246         Cvar_RegisterVariable(&r_useportalculling);
1247         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1248
1249         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");
1250         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");
1251
1252         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1253 }
1254