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", "brighter world cheat (not allowed in multiplayer), 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         static int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  48         static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  49
  50         // update cached lighting info
  51         surface->cached_dlight = 0;
  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         lightmap = surface->lightmapinfo->samples;
  58
  59 // set to full bright if no light data
  60         bl = intblocklights;
  61         if (!model->brushq1.lightdata)
  62         {
  63                 for (i = 0;i < size3;i++)
  64                         bl[i] = 128*256;
  65         }
  66         else
  67         {
  68 // clear to no light
  69                 memset(bl, 0, size3*sizeof(*bl));
  70
  71 // add all the lightmaps
  72                 if (lightmap)
  73                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  74                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  75                                         bl[i] += lightmap[i] * scale;
  76         }
  77
  78         stain = surface->lightmapinfo->stainsamples;
  79         bl = intblocklights;
  80         out = templight;
  81         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  82         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  83         // be doubled during rendering to achieve 2x overbright
  84         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  85         if (model->brushq1.lightmaprgba)
  86         {
  87                 for (i = 0;i < size;i++)
  88                 {
  89                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
  90                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
  91                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
  92                         *out++ = 255;
  93                 }
  94         }
  95         else
  96         {
  97                 for (i = 0;i < size;i++)
  98                 {
  99                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 100                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 101                         l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 102                 }
 103         }
 104
 105         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 106
 107         // update the surface's deluxemap if it has one
 108         if (surface->deluxemaptexture != r_texture_blanknormalmap)
 109         {
 110                 vec3_t n;
 111                 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
 112                 lightmap = surface->lightmapinfo->samples;
 113                 // clear to no normalmap
 114                 bl = intblocklights;
 115                 memset(bl, 0, size3*sizeof(*bl));
 116                 // add all the normalmaps
 117                 if (lightmap && normalmap)
 118                 {
 119                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
 120                         {
 121                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
 122                                 {
 123                                         // add the normalmap with weighting proportional to the style's lightmap intensity
 124                                         l = (int)(VectorLength(lightmap + i*3) * scale);
 125                                         bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
 126                                         bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
 127                                         bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
 128                                 }
 129                         }
 130                 }
 131                 bl = intblocklights;
 132                 out = templight;
 133                 // we simply renormalize the weighted normals to get a valid deluxemap
 134                 if (model->brushq1.lightmaprgba)
 135                 {
 136                         for (i = 0;i < size;i++, bl += 3)
 137                         {
 138                                 VectorCopy(bl, n);
 139                                 VectorNormalize(n);
 140                                 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
 141                                 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
 142                                 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
 143                                 *out++ = 255;
 144                         }
 145                 }
 146                 else
 147                 {
 148                         for (i = 0;i < size;i++, bl += 3)
 149                         {
 150                                 VectorCopy(bl, n);
 151                                 VectorNormalize(n);
 152                                 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
 153                                 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
 154                                 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
 155                         }
 156                 }
 157                 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 158         }
 159 }
 160
 161 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 162 {
 163         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 164         msurface_t *surface, *endsurface;
 165         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 166         unsigned char *bl;
 167         vec3_t impact;
 168
 169         maxdist = radius * radius;
 170         invradius = 1.0f / radius;
 171
 172 loc0:
 173         if (!node->plane)
 174                 return;
 175         ndist = PlaneDiff(origin, node->plane);
 176         if (ndist > radius)
 177         {
 178                 node = node->children[0];
 179                 goto loc0;
 180         }
 181         if (ndist < -radius)
 182         {
 183                 node = node->children[1];
 184                 goto loc0;
 185         }
 186
 187         dist2 = ndist * ndist;
 188         maxdist3 = maxdist - dist2;
 189
 190         if (node->plane->type < 3)
 191         {
 192                 VectorCopy(origin, impact);
 193                 impact[node->plane->type] -= ndist;
 194         }
 195         else
 196         {
 197                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 198                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 199                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 200         }
 201
 202         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 203         {
 204                 if (surface->lightmapinfo->stainsamples)
 205                 {
 206                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 207                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 208
 209                         impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
 210                         impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
 211
 212                         s = bound(0, impacts, smax * 16) - impacts;
 213                         t = bound(0, impactt, tmax * 16) - impactt;
 214                         i = (int)(s * s + t * t + dist2);
 215                         if (i > maxdist)
 216                                 continue;
 217
 218                         // reduce calculations
 219                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 220                                 sdtable[s] = i * i + dist2;
 221
 222                         bl = surface->lightmapinfo->stainsamples;
 223                         smax3 = smax * 3;
 224                         stained = false;
 225
 226                         i = impactt;
 227                         for (t = 0;t < tmax;t++, i -= 16)
 228                         {
 229                                 td = i * i;
 230                                 // make sure some part of it is visible on this line
 231                                 if (td < maxdist3)
 232                                 {
 233                                         maxdist2 = maxdist - td;
 234                                         for (s = 0;s < smax;s++)
 235                                         {
 236                                                 if (sdtable[s] < maxdist2)
 237                                                 {
 238                                                         ratio = lhrandom(0.0f, 1.0f);
 239                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 240                                                         if (a >= (1.0f / 64.0f))
 241                                                         {
 242                                                                 if (a > 1)
 243                                                                         a = 1;
 244                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 245                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 246                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 247                                                                 stained = true;
 248                                                         }
 249                                                 }
 250                                                 bl += 3;
 251                                         }
 252                                 }
 253                                 else // skip line
 254                                         bl += smax3;
 255                         }
 256                         // force lightmap upload
 257                         if (stained)
 258                                 surface->cached_dlight = true;
 259                 }
 260         }
 261
 262         if (node->children[0]->plane)
 263         {
 264                 if (node->children[1]->plane)
 265                 {
 266                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 267                         node = node->children[1];
 268                         goto loc0;
 269                 }
 270                 else
 271                 {
 272                         node = node->children[0];
 273                         goto loc0;
 274                 }
 275         }
 276         else if (node->children[1]->plane)
 277         {
 278                 node = node->children[1];
 279                 goto loc0;
 280         }
 281 }
 282
 283 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)
 284 {
 285         int n;
 286         float fcolor[8];
 287         entity_render_t *ent;
 288         model_t *model;
 289         vec3_t org;
 290         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 291                 return;
 292         fcolor[0] = cr1;
 293         fcolor[1] = cg1;
 294         fcolor[2] = cb1;
 295         fcolor[3] = ca1 * (1.0f / 64.0f);
 296         fcolor[4] = cr2 - cr1;
 297         fcolor[5] = cg2 - cg1;
 298         fcolor[6] = cb2 - cb1;
 299         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 300
 301         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 302
 303         // look for embedded bmodels
 304         for (n = 0;n < cl.num_brushmodel_entities;n++)
 305         {
 306                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 307                 model = ent->model;
 308                 if (model && model->name[0] == '*')
 309                 {
 310                         if (model->brush.data_nodes)
 311                         {
 312                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 313                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 314                         }
 315                 }
 316         }
 317 }
 318
 319
 320 /*
 321 =============================================================
 322
 323         BRUSH MODELS
 324
 325 =============================================================
 326 */
 327
 328 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 329 {
 330         // due to the hacky nature of this function's parameters, this is never
 331         // called with a batch, so numsurfaces is always 1, and the surfacelist
 332         // contains only a leaf number for coloring purposes
 333         const mportal_t *portal = (mportal_t *)ent;
 334         int i, numpoints;
 335         float *v;
 336         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 337         CHECKGLERROR
 338         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 339         GL_DepthMask(false);
 340         GL_DepthTest(true);
 341         GL_CullFace(GL_NONE);
 342         R_Mesh_Matrix(&identitymatrix);
 343
 344         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 345
 346         R_Mesh_VertexPointer(vertex3f, 0, 0);
 347         R_Mesh_ColorPointer(NULL, 0, 0);
 348         R_Mesh_ResetTextureState();
 349
 350         i = surfacelist[0];
 351         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_view.colorscale,
 352                          ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_view.colorscale,
 353                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_view.colorscale,
 354                          0.125f);
 355         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 356                 VectorCopy(portal->points[i].position, v);
 357         R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements, 0, 0);
 358 }
 359
 360 // LordHavoc: this is just a nice debugging tool, very slow
 361 void R_DrawPortals(void)
 362 {
 363         int i, leafnum;
 364         mportal_t *portal;
 365         float center[3], f;
 366         model_t *model = r_refdef.worldmodel;
 367         if (model == NULL)
 368                 return;
 369         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 370         {
 371                 if (r_viewcache.world_leafvisible[leafnum])
 372                 {
 373                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 374                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 375                         {
 376                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 377                                 if (!R_CullBox(portal->mins, portal->maxs))
 378                                 {
 379                                         VectorClear(center);
 380                                         for (i = 0;i < portal->numpoints;i++)
 381                                                 VectorAdd(center, portal->points[i].position, center);
 382                                         f = ixtable[portal->numpoints];
 383                                         VectorScale(center, f, center);
 384                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
 385                                 }
 386                         }
 387                 }
 388         }
 389 }
 390
 391 void R_View_WorldVisibility(void)
 392 {
 393         int i, j, *mark;
 394         mleaf_t *leaf;
 395         mleaf_t *viewleaf;
 396         model_t *model = r_refdef.worldmodel;
 397
 398         if (!model)
 399                 return;
 400
 401         // if possible find the leaf the view origin is in
 402         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_view.origin) : NULL;
 403         // if possible fetch the visible cluster bits
 404         if (!r_lockpvs.integer && model->brush.FatPVS)
 405                 model->brush.FatPVS(model, r_view.origin, 2, r_viewcache.world_pvsbits, sizeof(r_viewcache.world_pvsbits));
 406
 407         if (!r_lockvisibility.integer)
 408         {
 409                 // clear the visible surface and leaf flags arrays
 410                 memset(r_viewcache.world_surfacevisible, 0, model->num_surfaces);
 411                 memset(r_viewcache.world_leafvisible, 0, model->brush.num_leafs);
 412
 413                 r_viewcache.world_novis = false;
 414
 415                 // if floating around in the void (no pvs data available, and no
 416                 // portals available), simply use all on-screen leafs.
 417                 if (!viewleaf || viewleaf->clusterindex < 0)
 418                 {
 419                         // no visibility method: (used when floating around in the void)
 420                         // simply cull each leaf to the frustum (view pyramid)
 421                         // similar to quake's RecursiveWorldNode but without cache misses
 422                         r_viewcache.world_novis = true;
 423                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 424                         {
 425                                 // if leaf is in current pvs and on the screen, mark its surfaces
 426                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 427                                 {
 428                                         r_refdef.stats.world_leafs++;
 429                                         r_viewcache.world_leafvisible[j] = true;
 430                                         if (leaf->numleafsurfaces)
 431                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 432                                                         r_viewcache.world_surfacevisible[*mark] = true;
 433                                 }
 434                         }
 435                 }
 436                 // if the user prefers to disable portal culling (testing?), simply
 437                 // use all on-screen leafs that are in the pvs.
 438                 else if (!r_useportalculling.integer)
 439                 {
 440                         // pvs method:
 441                         // simply check if each leaf is in the Potentially Visible Set,
 442                         // and cull to frustum (view pyramid)
 443                         // similar to quake's RecursiveWorldNode but without cache misses
 444                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 445                         {
 446                                 // if leaf is in current pvs and on the screen, mark its surfaces
 447                                 if (CHECKPVSBIT(r_viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 448                                 {
 449                                         r_refdef.stats.world_leafs++;
 450                                         r_viewcache.world_leafvisible[j] = true;
 451                                         if (leaf->numleafsurfaces)
 452                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 453                                                         r_viewcache.world_surfacevisible[*mark] = true;
 454                                 }
 455                         }
 456                 }
 457                 // otherwise use a recursive portal flow, culling each portal to
 458                 // frustum and checking if the leaf the portal leads to is in the pvs
 459                 else
 460                 {
 461                         int leafstackpos;
 462                         mportal_t *p;
 463                         mleaf_t *leafstack[8192];
 464                         // simple-frustum portal method:
 465                         // follows portals leading outward from viewleaf, does not venture
 466                         // offscreen or into leafs that are not visible, faster than
 467                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 468                         // often culls some surfaces that pvs alone would miss
 469                         // (such as a room in pvs that is hidden behind a wall, but the
 470                         //  passage leading to the room is off-screen)
 471                         leafstack[0] = viewleaf;
 472                         leafstackpos = 1;
 473                         while (leafstackpos)
 474                         {
 475                                 leaf = leafstack[--leafstackpos];
 476                                 if (r_viewcache.world_leafvisible[leaf - model->brush.data_leafs])
 477                                         continue;
 478                                 r_refdef.stats.world_leafs++;
 479                                 r_viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
 480                                 // mark any surfaces bounding this leaf
 481                                 if (leaf->numleafsurfaces)
 482                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 483                                                 r_viewcache.world_surfacevisible[*mark] = true;
 484                                 // follow portals into other leafs
 485                                 // the checks are:
 486                                 // if viewer is behind portal (portal faces outward into the scene)
 487                                 // and the portal polygon's bounding box is on the screen
 488                                 // and the leaf has not been visited yet
 489                                 // and the leaf is visible in the pvs
 490                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 491                                 for (p = leaf->portals;p;p = p->next)
 492                                 {
 493                                         r_refdef.stats.world_portals++;
 494                                         if (DotProduct(r_view.origin, p->plane.normal) < (p->plane.dist + 1)
 495                                          && !r_viewcache.world_leafvisible[p->past - model->brush.data_leafs]
 496                                          && CHECKPVSBIT(r_viewcache.world_pvsbits, p->past->clusterindex)
 497                                          && !R_CullBox(p->mins, p->maxs)
 498                                          && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
 499                                                 leafstack[leafstackpos++] = p->past;
 500                                 }
 501                         }
 502                 }
 503         }
 504 }
 505
 506 void R_Q1BSP_DrawSky(entity_render_t *ent)
 507 {
 508         if (ent->model == NULL)
 509                 return;
 510         if (ent == r_refdef.worldentity)
 511                 R_DrawWorldSurfaces(true);
 512         else
 513                 R_DrawModelSurfaces(ent, true);
 514 }
 515
 516 void R_Q1BSP_Draw(entity_render_t *ent)
 517 {
 518         model_t *model = ent->model;
 519         if (model == NULL)
 520                 return;
 521         if (ent == r_refdef.worldentity)
 522                 R_DrawWorldSurfaces(false);
 523         else
 524                 R_DrawModelSurfaces(ent, false);
 525 }
 526
 527 typedef struct r_q1bsp_getlightinfo_s
 528 {
 529         model_t *model;
 530         vec3_t relativelightorigin;
 531         float lightradius;
 532         int *outleaflist;
 533         unsigned char *outleafpvs;
 534         int outnumleafs;
 535         int *outsurfacelist;
 536         unsigned char *outsurfacepvs;
 537         unsigned char *tempsurfacepvs;
 538         unsigned char *outshadowtrispvs;
 539         unsigned char *outlighttrispvs;
 540         int outnumsurfaces;
 541         vec3_t outmins;
 542         vec3_t outmaxs;
 543         vec3_t lightmins;
 544         vec3_t lightmaxs;
 545         const unsigned char *pvs;
 546         qboolean svbsp_active;
 547         qboolean svbsp_insertoccluder;
 548 }
 549 r_q1bsp_getlightinfo_t;
 550
 551 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 552 {
 553         int sides;
 554         mleaf_t *leaf;
 555         for (;;)
 556         {
 557                 mplane_t *plane = node->plane;
 558                 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 559                 //      return;
 560                 if (!plane)
 561                         break;
 562                 //if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, r_shadow_rtlight_numfrustumplanes, r_shadow_rtlight_frustumplanes))
 563                 //      return;
 564                 if (plane->type < 3)
 565                 {
 566                         if (info->lightmins[plane->type] > plane->dist)
 567                                 node = node->children[0];
 568                         else if (info->lightmaxs[plane->type] < plane->dist)
 569                                 node = node->children[1];
 570                         else if (info->relativelightorigin[plane->type] >= plane->dist)
 571                         {
 572                                 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 573                                 node = node->children[1];
 574                         }
 575                         else
 576                         {
 577                                 R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
 578                                 node = node->children[0];
 579                         }
 580                 }
 581                 else
 582                 {
 583                         sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 584                         if (sides == 3)
 585                         {
 586                                 // recurse front side first because the svbsp building prefers it
 587                                 if (PlaneDist(info->relativelightorigin, plane) >= 0)
 588                                 {
 589                                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 590                                         node = node->children[1];
 591                                 }
 592                                 else
 593                                 {
 594                                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
 595                                         node = node->children[0];
 596                                 }
 597                         }
 598                         else if (sides == 0)
 599                                 return; // ERROR: NAN bounding box!
 600                         else
 601                                 node = node->children[sides - 1];
 602                 }
 603         }
 604         if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, r_shadow_rtlight_numfrustumplanes, r_shadow_rtlight_frustumplanes))
 605                 return;
 606         leaf = (mleaf_t *)node;
 607         if (info->svbsp_active)
 608         {
 609                 int i;
 610                 mportal_t *portal;
 611                 double points[128][3];
 612                 for (portal = leaf->portals;portal;portal = portal->next)
 613                 {
 614                         for (i = 0;i < portal->numpoints;i++)
 615                                 VectorCopy(portal->points[i].position, points[i]);
 616                         if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
 617                                 break;
 618                 }
 619                 if (portal == NULL)
 620                         return; // no portals of this leaf visible
 621         }
 622         else
 623         {
 624                 if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
 625                         return;
 626         }
 627         // inserting occluders does not alter the leaf info
 628         if (!info->svbsp_insertoccluder)
 629         {
 630                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 631                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 632                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 633                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 634                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 635                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 636                 if (info->outleafpvs)
 637                 {
 638                         int leafindex = leaf - info->model->brush.data_leafs;
 639                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 640                         {
 641                                 SETPVSBIT(info->outleafpvs, leafindex);
 642                                 info->outleaflist[info->outnumleafs++] = leafindex;
 643                         }
 644                 }
 645         }
 646         if (info->outsurfacepvs)
 647         {
 648                 int leafsurfaceindex;
 649                 int surfaceindex;
 650                 int triangleindex, t;
 651                 msurface_t *surface;
 652                 const int *e;
 653                 const vec_t *v[3];
 654                 double v2[3][3];
 655                 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 656                 {
 657                         surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 658                         if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 659                         {
 660                                 surface = info->model->data_surfaces + surfaceindex;
 661                                 if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs)
 662                                  && (!info->svbsp_insertoccluder || !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)))
 663                                 {
 664                                         qboolean addedtris = false;
 665                                         qboolean insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
 666                                         for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 667                                         {
 668                                                 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 669                                                 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 670                                                 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 671                                                 if (insidebox || TriangleOverlapsBox(v[0], v[1], v[2], info->lightmins, info->lightmaxs))
 672                                                 {
 673                                                         if (info->svbsp_insertoccluder)
 674                                                         {
 675                                                                 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE) && r_shadow_frontsidecasting.integer != PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
 676                                                                         continue;
 677                                                                 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
 678                                                                         continue;
 679                                                                 VectorCopy(v[0], v2[0]);
 680                                                                 VectorCopy(v[1], v2[1]);
 681                                                                 VectorCopy(v[2], v2[2]);
 682                                                                 if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0) & 2))
 683                                                                         continue;
 684                                                                 addedtris = true;
 685                                                         }
 686                                                         else
 687                                                         {
 688                                                                 if (info->svbsp_active)
 689                                                                 {
 690                                                                         VectorCopy(v[0], v2[0]);
 691                                                                         VectorCopy(v[1], v2[1]);
 692                                                                         VectorCopy(v[2], v2[2]);
 693                                                                         if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
 694                                                                                 continue;
 695                                                                 }
 696                                                                 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE)
 697                                                                 {
 698                                                                         // if the material is double sided we
 699                                                                         // can't cull by direction
 700                                                                         SETPVSBIT(info->outlighttrispvs, t);
 701                                                                         addedtris = true;
 702                                                                         if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
 703                                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 704                                                                 }
 705                                                                 else if (r_shadow_frontsidecasting.integer)
 706                                                                 {
 707                                                                         // front side casting occludes backfaces,
 708                                                                         // so they are completely useless as both
 709                                                                         // casters and lit polygons
 710                                                                         if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
 711                                                                                 continue;
 712                                                                         SETPVSBIT(info->outlighttrispvs, t);
 713                                                                         addedtris = true;
 714                                                                         if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
 715                                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 716                                                                 }
 717                                                                 else
 718                                                                 {
 719                                                                         // back side casting does not occlude
 720                                                                         // anything so we can't cull lit polygons
 721                                                                         SETPVSBIT(info->outlighttrispvs, t);
 722                                                                         addedtris = true;
 723                                                                         if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
 724                                                                                 SETPVSBIT(info->outshadowtrispvs, t);
 725                                                                 }
 726                                                         }
 727                                                 }
 728                                         }
 729                                         if (addedtris)
 730                                         {
 731                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 732                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 733                                         }
 734                                 }
 735                         }
 736                 }
 737         }
 738 }
 739
 740 void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
 741 {
 742         if (use_svbsp)
 743         {
 744                 double origin[3];
 745                 VectorCopy(info->relativelightorigin, origin);
 746                 if (!r_svbsp.nodes)
 747                 {
 748                         r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<18);
 749                         r_svbsp.nodes = Mem_Alloc(r_main_mempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
 750                 }
 751                 info->svbsp_active = true;
 752                 info->svbsp_insertoccluder = true;
 753                 for (;;)
 754                 {
 755                         SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
 756                         R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
 757                         // if that failed, retry with more nodes
 758                         if (r_svbsp.ranoutofnodes)
 759                         {
 760                                 // an upper limit is imposed
 761                                 if (r_svbsp.maxnodes >= 2<<22)
 762                                         break;
 763                                 Mem_Free(r_svbsp.nodes);
 764                                 r_svbsp.maxnodes *= 2;
 765                                 r_svbsp.nodes = Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
 766                         }
 767                         else
 768                                 break;
 769                 }
 770                 // now clear the surfacepvs array because we need to redo it
 771                 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
 772                 info->outnumsurfaces = 0;
 773         }
 774         else
 775                 info->svbsp_active = false;
 776
 777         // we HAVE to mark the leaf the light is in as lit, because portals are
 778         // irrelevant to a leaf that the light source is inside of
 779         // (and they are all facing away, too)
 780         {
 781                 mnode_t *node = info->model->brush.data_nodes;
 782                 mleaf_t *leaf;
 783                 while (node->plane)
 784                         node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
 785                 leaf = (mleaf_t *)node;
 786                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 787                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 788                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 789                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 790                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 791                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 792                 if (info->outleafpvs)
 793                 {
 794                         int leafindex = leaf - info->model->brush.data_leafs;
 795                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 796                         {
 797                                 SETPVSBIT(info->outleafpvs, leafindex);
 798                                 info->outleaflist[info->outnumleafs++] = leafindex;
 799                         }
 800                 }
 801         }
 802
 803         info->svbsp_insertoccluder = false;
 804         R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
 805         if (developer.integer >= 100 && use_svbsp)
 806         {
 807                 Con_Printf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
 808                 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);
 809                 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);
 810         }
 811 }
 812
 813 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)
 814 {
 815         r_q1bsp_getlightinfo_t info;
 816         VectorCopy(relativelightorigin, info.relativelightorigin);
 817         info.lightradius = lightradius;
 818         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 819         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 820         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 821         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 822         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 823         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 824         if (ent->model == NULL)
 825         {
 826                 VectorCopy(info.lightmins, outmins);
 827                 VectorCopy(info.lightmaxs, outmaxs);
 828                 *outnumleafspointer = 0;
 829                 *outnumsurfacespointer = 0;
 830                 return;
 831         }
 832         info.model = ent->model;
 833         info.outleaflist = outleaflist;
 834         info.outleafpvs = outleafpvs;
 835         info.outnumleafs = 0;
 836         info.outsurfacelist = outsurfacelist;
 837         info.outsurfacepvs = outsurfacepvs;
 838         info.outshadowtrispvs = outshadowtrispvs;
 839         info.outlighttrispvs = outlighttrispvs;
 840         info.outnumsurfaces = 0;
 841         VectorCopy(info.relativelightorigin, info.outmins);
 842         VectorCopy(info.relativelightorigin, info.outmaxs);
 843         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 844         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 845         if (info.model->brush.shadowmesh)
 846                 memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
 847         else
 848                 memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
 849         memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
 850         if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
 851                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 852         else
 853                 info.pvs = NULL;
 854         R_UpdateAllTextureInfo(ent);
 855
 856         if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer)
 857         {
 858                 // use portal recursion for exact light volume culling, and exact surface checking
 859                 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);
 860         }
 861         else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer)
 862         {
 863                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 864                 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);
 865         }
 866         else
 867         {
 868                 // recurse the bsp tree, checking leafs and surfaces for visibility
 869                 // optionally using svbsp for exact culling of compiled lights
 870                 // (or if the user enables dlight svbsp culling, which is mostly for
 871                 //  debugging not actual use)
 872                 R_Q1BSP_CallRecursiveGetLightInfo(&info, r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer);
 873         }
 874
 875         // limit combined leaf box to light boundaries
 876         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 877         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 878         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 879         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 880         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 881         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 882
 883         *outnumleafspointer = info.outnumleafs;
 884         *outnumsurfacespointer = info.outnumsurfaces;
 885 }
 886
 887 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
 888 {
 889         model_t *model = ent->model;
 890         msurface_t *surface;
 891         int surfacelistindex;
 892         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
 893         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 894         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 895         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 896         {
 897                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 898                 if (surface->texture->currentframe->basematerialflags & MATERIALFLAG_NOSHADOW)
 899                         continue;
 900                 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);
 901         }
 902         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);
 903         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false, true);
 904 }
 905
 906 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)
 907 {
 908         model_t *model = ent->model;
 909         msurface_t *surface;
 910         int modelsurfacelistindex;
 911         float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
 912         // check the box in modelspace, it was already checked in worldspace
 913         if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
 914                 return;
 915         R_UpdateAllTextureInfo(ent);
 916         if (model->brush.shadowmesh)
 917         {
 918                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 919                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 920                 {
 921                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
 922                         if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
 923                                 continue;
 924                         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);
 925                 }
 926                 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);
 927         }
 928         else
 929         {
 930                 projectdistance = lightradius + model->radius*2;
 931                 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
 932                 // identify lit faces within the bounding box
 933                 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
 934                 {
 935                         surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
 936                         rsurface_texture = surface->texture->currentframe;
 937                         if (rsurface_texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
 938                                 continue;
 939                         RSurf_PrepareVerticesForBatch(false, false, 1, &surface);
 940                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, rsurface_model->surfmesh.data_element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
 941                 }
 942                 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);
 943         }
 944 }
 945
 946 #define BATCHSIZE 1024
 947
 948 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
 949 {
 950         int i, j, endsurface;
 951         texture_t *t;
 952         msurface_t *surface;
 953         // note: in practice this never actually receives batches), oh well
 954         R_Shadow_RenderMode_Begin();
 955         R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
 956         R_Shadow_RenderMode_Lighting(false, true);
 957         R_Shadow_SetupEntityLight(ent);
 958         for (i = 0;i < numsurfaces;i = j)
 959         {
 960                 j = i + 1;
 961                 surface = rsurface_model->data_surfaces + surfacelist[i];
 962                 t = surface->texture;
 963                 R_UpdateTextureInfo(ent, t);
 964                 rsurface_texture = t->currentframe;
 965                 endsurface = min(j + BATCHSIZE, numsurfaces);
 966                 for (j = i;j < endsurface;j++)
 967                 {
 968                         surface = rsurface_model->data_surfaces + surfacelist[j];
 969                         if (t != surface->texture)
 970                                 break;
 971                         RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
 972                         R_Shadow_RenderLighting(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, ent->model->surfmesh.data_element3i + surface->num_firsttriangle * 3);
 973                 }
 974         }
 975         R_Shadow_RenderMode_End();
 976 }
 977
 978 #define RSURF_MAX_BATCHSURFACES 1024
 979
 980 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *trispvs)
 981 {
 982         model_t *model = ent->model;
 983         msurface_t *surface;
 984         int i, k, l, m, mend, endsurface, batchnumsurfaces, batchnumtriangles, batchfirstvertex, batchlastvertex;
 985         const int *element3i;
 986         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
 987         int batchelements[BATCHSIZE*3];
 988         texture_t *tex;
 989         CHECKGLERROR
 990         RSurf_ActiveModelEntity(ent, true, true);
 991         R_UpdateAllTextureInfo(ent);
 992         CHECKGLERROR
 993         element3i = rsurface_model->surfmesh.data_element3i;
 994         // this is a double loop because non-visible surface skipping has to be
 995         // fast, and even if this is not the world model (and hence no visibility
 996         // checking) the input surface list and batch buffer are different formats
 997         // so some processing is necessary.  (luckily models have few surfaces)
 998         for (i = 0;i < numsurfaces;)
 999         {
1000                 batchnumsurfaces = 0;
1001                 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1002                 if (ent == r_refdef.worldentity)
1003                 {
1004                         for (;i < endsurface;i++)
1005                                 if (r_viewcache.world_surfacevisible[surfacelist[i]])
1006                                         batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1007                 }
1008                 else
1009                 {
1010                         for (;i < endsurface;i++)
1011                                 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1012                 }
1013                 if (!batchnumsurfaces)
1014                         continue;
1015                 for (k = 0;k < batchnumsurfaces;k = l)
1016                 {
1017                         surface = batchsurfacelist[k];
1018                         tex = surface->texture;
1019                         rsurface_texture = tex->currentframe;
1020                         if (rsurface_texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_WATER))
1021                         {
1022                                 if (rsurface_texture->currentmaterialflags & MATERIALFLAG_BLENDED)
1023                                 {
1024                                         vec3_t tempcenter, center;
1025                                         for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1026                                         {
1027                                                 surface = batchsurfacelist[l];
1028                                                 tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1029                                                 tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1030                                                 tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1031                                                 Matrix4x4_Transform(&rsurface_entity->matrix, tempcenter, center);
1032                                                 R_MeshQueue_AddTransparent(rsurface_texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, rsurface_entity, surface - rsurface_model->data_surfaces, r_shadow_rtlight);
1033                                         }
1034                                 }
1035                                 else
1036                                 {
1037                                         batchnumtriangles = 0;
1038                                         // note: this only accepts consecutive surfaces because
1039                                         // non-consecutive surfaces often have extreme vertex
1040                                         // ranges (due to large numbers of surfaces omitted
1041                                         // between them)
1042                                         surface = batchsurfacelist[k];
1043                                         for (l = k;l < batchnumsurfaces && surface == batchsurfacelist[l] && tex == surface->texture;l++, surface++)
1044                                         {
1045                                                 RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
1046                                                 for (m = surface->num_firsttriangle, mend = m + surface->num_triangles;m < mend;m++)
1047                                                 {
1048                                                         if (r_shadow_culltriangles.integer)
1049                                                         {
1050                                                                 if (trispvs)
1051                                                                 {
1052                                                                         if (!CHECKPVSBIT(trispvs, m))
1053                                                                                 continue;
1054                                                                 }
1055                                                                 else
1056                                                                 {
1057                                                                         if (r_shadow_frontsidecasting.integer && !PointInfrontOfTriangle(r_shadow_entitylightorigin, rsurface_vertex3f + element3i[m*3+0]*3, rsurface_vertex3f + element3i[m*3+1]*3, rsurface_vertex3f + element3i[m*3+2]*3))
1058                                                                                 continue;
1059                                                                 }
1060                                                         }
1061                                                         batchelements[batchnumtriangles*3+0] = element3i[m*3+0];
1062                                                         batchelements[batchnumtriangles*3+1] = element3i[m*3+1];
1063                                                         batchelements[batchnumtriangles*3+2] = element3i[m*3+2];
1064                                                         batchnumtriangles++;
1065                                                         r_refdef.stats.lights_lighttriangles++;
1066                                                         if (batchnumtriangles >= BATCHSIZE)
1067                                                         {
1068                                                                 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1069                                                                 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements);
1070                                                                 batchnumtriangles = 0;
1071                                                         }
1072                                                 }
1073                                                 r_refdef.stats.lights_lighttriangles += batchsurfacelist[l]->num_triangles;
1074                                         }
1075                                         if (batchnumtriangles > 0)
1076                                         {
1077                                                 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1078                                                 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements);
1079                                         }
1080                                 }
1081                         }
1082                         else
1083                         {
1084                                 // skip ahead to the next texture
1085                                 for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1086                                         ;
1087                         }
1088                 }
1089         }
1090 }
1091
1092 //Made by [515]
1093 void R_ReplaceWorldTexture (void)
1094 {
1095         model_t         *m;
1096         texture_t       *t;
1097         int                     i;
1098         const char      *r, *newt;
1099         m = r_refdef.worldmodel;
1100
1101         if(Cmd_Argc() < 2)
1102         {
1103                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1104                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1105                 return;
1106         }
1107         if(!cl.islocalgame || !cl.worldmodel)
1108         {
1109                 Con_Print("This command works only in singleplayer\n");
1110                 return;
1111         }
1112         r = Cmd_Argv(1);
1113         newt = Cmd_Argv(2);
1114         if(!newt[0])
1115                 newt = r;
1116         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1117         {
1118                 if(t->width && !strcasecmp(t->name, r))
1119                 {
1120                         if(Mod_LoadSkinFrame(&t->skinframes[0], (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
1121                         {
1122                                 Con_Printf("%s replaced with %s\n", r, newt);
1123                                 return;
1124                         }
1125                         else
1126                         {
1127                                 Con_Printf("%s was not found\n", newt);
1128                                 Mod_LoadSkinFrame(&t->skinframes[0], (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
1129                                 return;
1130                         }
1131                 }
1132         }
1133 }
1134
1135 //Made by [515]
1136 void R_ListWorldTextures (void)
1137 {
1138         model_t         *m;
1139         texture_t       *t;
1140         int                     i;
1141         m = r_refdef.worldmodel;
1142
1143         Con_Print("Worldmodel textures :\n");
1144         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1145                 if (t->numskinframes)
1146                         Con_Printf("%s\n", t->name);
1147 }
1148
1149 #if 0
1150 static void gl_surf_start(void)
1151 {
1152 }
1153
1154 static void gl_surf_shutdown(void)
1155 {
1156 }
1157
1158 static void gl_surf_newmap(void)
1159 {
1160 }
1161 #endif
1162
1163 void GL_Surf_Init(void)
1164 {
1165
1166         Cvar_RegisterVariable(&r_ambient);
1167         Cvar_RegisterVariable(&r_lockpvs);
1168         Cvar_RegisterVariable(&r_lockvisibility);
1169         Cvar_RegisterVariable(&r_useportalculling);
1170         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1171
1172         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");
1173         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");
1174
1175         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
1176 }
1177