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_drawportals = {0, "r_drawportals", "0", "shows portals (separating polygons) in world interior in quake1 maps"};
  30 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)"};
  31 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)"};
  32 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"};
  33 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"};
  34
  35 // flag arrays used for visibility checking on world model
  36 // (all other entities have no per-surface/per-leaf visibility checks)
  37 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
  38 unsigned char r_pvsbits[(32768+7)>>3];
  39 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
  40 unsigned char r_worldleafvisible[32768];
  41 // TODO: dynamic resize according to r_refdef.worldmodel->num_surfaces
  42 unsigned char r_worldsurfacevisible[262144];
  43
  44 /*
  45 ===============
  46 R_BuildLightMap
  47
  48 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  49 ===============
  50 */
  51 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  52 {
  53         int smax, tmax, i, j, size, size3, maps, l;
  54         unsigned int *bl, scale;
  55         unsigned char *lightmap, *out, *stain;
  56         static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  57         static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  58
  59         // update cached lighting info
  60         surface->cached_dlight = 0;
  61
  62         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  63         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  64         size = smax*tmax;
  65         size3 = size*3;
  66         lightmap = surface->lightmapinfo->samples;
  67
  68 // set to full bright if no light data
  69         bl = intblocklights;
  70         if (!ent->model->brushq1.lightdata)
  71         {
  72                 for (i = 0;i < size3;i++)
  73                         bl[i] = 255*256;
  74         }
  75         else
  76         {
  77 // clear to no light
  78                 memset(bl, 0, size*3*sizeof(unsigned int));
  79
  80 // add all the lightmaps
  81                 if (lightmap)
  82                 {
  83                         bl = intblocklights;
  84                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  85                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  86                                         bl[i] += lightmap[i] * scale;
  87                 }
  88         }
  89
  90         stain = surface->lightmapinfo->stainsamples;
  91         bl = intblocklights;
  92         out = templight;
  93         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  94         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  95         // be doubled during rendering to achieve 2x overbright
  96         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  97         if (ent->model->brushq1.lightmaprgba)
  98         {
  99                 for (i = 0;i < tmax;i++)
 100                 {
 101                         for (j = 0;j < smax;j++)
 102                         {
 103                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 104                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 105                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 106                                 *out++ = 255;
 107                         }
 108                 }
 109         }
 110         else
 111         {
 112                 for (i = 0;i < tmax;i++)
 113                 {
 114                         for (j = 0;j < smax;j++)
 115                         {
 116                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 117                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 118                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 119                         }
 120                 }
 121         }
 122
 123         R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
 124 }
 125
 126 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 127 {
 128         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 129         msurface_t *surface, *endsurface;
 130         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 131         unsigned char *bl;
 132         vec3_t impact;
 133
 134         maxdist = radius * radius;
 135         invradius = 1.0f / radius;
 136
 137 loc0:
 138         if (!node->plane)
 139                 return;
 140         ndist = PlaneDiff(origin, node->plane);
 141         if (ndist > radius)
 142         {
 143                 node = node->children[0];
 144                 goto loc0;
 145         }
 146         if (ndist < -radius)
 147         {
 148                 node = node->children[1];
 149                 goto loc0;
 150         }
 151
 152         dist2 = ndist * ndist;
 153         maxdist3 = maxdist - dist2;
 154
 155         if (node->plane->type < 3)
 156         {
 157                 VectorCopy(origin, impact);
 158                 impact[node->plane->type] -= ndist;
 159         }
 160         else
 161         {
 162                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 163                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 164                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 165         }
 166
 167         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 168         {
 169                 if (surface->lightmapinfo->stainsamples)
 170                 {
 171                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 172                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 173
 174                         impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
 175                         impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
 176
 177                         s = bound(0, impacts, smax * 16) - impacts;
 178                         t = bound(0, impactt, tmax * 16) - impactt;
 179                         i = s * s + t * t + dist2;
 180                         if (i > maxdist)
 181                                 continue;
 182
 183                         // reduce calculations
 184                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 185                                 sdtable[s] = i * i + dist2;
 186
 187                         bl = surface->lightmapinfo->stainsamples;
 188                         smax3 = smax * 3;
 189                         stained = false;
 190
 191                         i = impactt;
 192                         for (t = 0;t < tmax;t++, i -= 16)
 193                         {
 194                                 td = i * i;
 195                                 // make sure some part of it is visible on this line
 196                                 if (td < maxdist3)
 197                                 {
 198                                         maxdist2 = maxdist - td;
 199                                         for (s = 0;s < smax;s++)
 200                                         {
 201                                                 if (sdtable[s] < maxdist2)
 202                                                 {
 203                                                         ratio = lhrandom(0.0f, 1.0f);
 204                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 205                                                         if (a >= (1.0f / 64.0f))
 206                                                         {
 207                                                                 if (a > 1)
 208                                                                         a = 1;
 209                                                                 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 210                                                                 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 211                                                                 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 212                                                                 stained = true;
 213                                                         }
 214                                                 }
 215                                                 bl += 3;
 216                                         }
 217                                 }
 218                                 else // skip line
 219                                         bl += smax3;
 220                         }
 221                         // force lightmap upload
 222                         if (stained)
 223                                 surface->cached_dlight = true;
 224                 }
 225         }
 226
 227         if (node->children[0]->plane)
 228         {
 229                 if (node->children[1]->plane)
 230                 {
 231                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 232                         node = node->children[1];
 233                         goto loc0;
 234                 }
 235                 else
 236                 {
 237                         node = node->children[0];
 238                         goto loc0;
 239                 }
 240         }
 241         else if (node->children[1]->plane)
 242         {
 243                 node = node->children[1];
 244                 goto loc0;
 245         }
 246 }
 247
 248 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)
 249 {
 250         int n;
 251         float fcolor[8];
 252         entity_render_t *ent;
 253         model_t *model;
 254         vec3_t org;
 255         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 256                 return;
 257         fcolor[0] = cr1;
 258         fcolor[1] = cg1;
 259         fcolor[2] = cb1;
 260         fcolor[3] = ca1 * (1.0f / 64.0f);
 261         fcolor[4] = cr2 - cr1;
 262         fcolor[5] = cg2 - cg1;
 263         fcolor[6] = cb2 - cb1;
 264         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 265
 266         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 267
 268         // look for embedded bmodels
 269         for (n = 0;n < cl.num_brushmodel_entities;n++)
 270         {
 271                 ent = &cl.entities[cl.brushmodel_entities[n]].render;
 272                 model = ent->model;
 273                 if (model && model->name[0] == '*')
 274                 {
 275                         if (model->brush.data_nodes)
 276                         {
 277                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 278                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 279                         }
 280                 }
 281         }
 282 }
 283
 284
 285 /*
 286 =============================================================
 287
 288         BRUSH MODELS
 289
 290 =============================================================
 291 */
 292
 293 static void R_DrawPortal_Callback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 294 {
 295         const mportal_t *portal = (mportal_t *)ent;
 296         int i, numpoints;
 297         float *v;
 298         rmeshstate_t m;
 299         float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
 300         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 301         GL_DepthMask(false);
 302         GL_DepthTest(true);
 303         qglDisable(GL_CULL_FACE);
 304         R_Mesh_Matrix(&identitymatrix);
 305
 306         numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
 307
 308         memset(&m, 0, sizeof(m));
 309         m.pointer_vertex = vertex3f;
 310         R_Mesh_State(&m);
 311
 312         i = surfacenumber;
 313         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
 314                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
 315                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
 316                          0.125f);
 317         for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
 318                 VectorCopy(portal->points[i].position, v);
 319         R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements);
 320         qglEnable(GL_CULL_FACE);
 321 }
 322
 323 // LordHavoc: this is just a nice debugging tool, very slow
 324 static void R_DrawPortals(void)
 325 {
 326         int i, leafnum;
 327         mportal_t *portal;
 328         float center[3], f;
 329         model_t *model = r_refdef.worldmodel;
 330         if (model == NULL)
 331                 return;
 332         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 333         {
 334                 if (r_worldleafvisible[leafnum])
 335                 {
 336                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 337                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 338                         {
 339                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 340                                 if (!R_CullBox(portal->mins, portal->maxs))
 341                                 {
 342                                         VectorClear(center);
 343                                         for (i = 0;i < portal->numpoints;i++)
 344                                                 VectorAdd(center, portal->points[i].position, center);
 345                                         f = ixtable[portal->numpoints];
 346                                         VectorScale(center, f, center);
 347                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
 348                                 }
 349                         }
 350                 }
 351         }
 352 }
 353
 354 void R_WorldVisibility(void)
 355 {
 356         int i, j, *mark;
 357         mleaf_t *leaf;
 358         mleaf_t *viewleaf;
 359         model_t *model = r_refdef.worldmodel;
 360
 361         if (!model)
 362                 return;
 363
 364         // if possible find the leaf the view origin is in
 365         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
 366         // if possible fetch the visible cluster bits
 367         if (!r_lockpvs.integer && model->brush.FatPVS)
 368                 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
 369
 370         if (!r_lockvisibility.integer)
 371         {
 372                 // clear the visible surface and leaf flags arrays
 373                 memset(r_worldsurfacevisible, 0, model->num_surfaces);
 374                 memset(r_worldleafvisible, 0, model->brush.num_leafs);
 375
 376                 // if floating around in the void (no pvs data available, and no
 377                 // portals available), simply use all on-screen leafs.
 378                 if (!viewleaf || viewleaf->clusterindex < 0)
 379                 {
 380                         // no visibility method: (used when floating around in the void)
 381                         // simply cull each leaf to the frustum (view pyramid)
 382                         // similar to quake's RecursiveWorldNode but without cache misses
 383                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 384                         {
 385                                 // if leaf is in current pvs and on the screen, mark its surfaces
 386                                 if (!R_CullBox(leaf->mins, leaf->maxs))
 387                                 {
 388                                         renderstats.world_leafs++;
 389                                         r_worldleafvisible[j] = true;
 390                                         if (leaf->numleafsurfaces)
 391                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 392                                                         r_worldsurfacevisible[*mark] = true;
 393                                 }
 394                         }
 395                 }
 396                 // if the user prefers to disable portal culling (testing?), simply
 397                 // use all on-screen leafs that are in the pvs.
 398                 else if (!r_useportalculling.integer)
 399                 {
 400                         // pvs method:
 401                         // simply check if each leaf is in the Potentially Visible Set,
 402                         // and cull to frustum (view pyramid)
 403                         // similar to quake's RecursiveWorldNode but without cache misses
 404                         for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 405                         {
 406                                 // if leaf is in current pvs and on the screen, mark its surfaces
 407                                 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 408                                 {
 409                                         renderstats.world_leafs++;
 410                                         r_worldleafvisible[j] = true;
 411                                         if (leaf->numleafsurfaces)
 412                                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 413                                                         r_worldsurfacevisible[*mark] = true;
 414                                 }
 415                         }
 416                 }
 417                 // otherwise use a recursive portal flow, culling each portal to
 418                 // frustum and checking if the leaf the portal leads to is in the pvs
 419                 else
 420                 {
 421                         int leafstackpos;
 422                         mportal_t *p;
 423                         mleaf_t *leafstack[8192];
 424                         // simple-frustum portal method:
 425                         // follows portals leading outward from viewleaf, does not venture
 426                         // offscreen or into leafs that are not visible, faster than
 427                         // Quake's RecursiveWorldNode and vastly better in unvised maps,
 428                         // often culls some surfaces that pvs alone would miss
 429                         // (such as a room in pvs that is hidden behind a wall, but the
 430                         //  passage leading to the room is off-screen)
 431                         leafstack[0] = viewleaf;
 432                         leafstackpos = 1;
 433                         while (leafstackpos)
 434                         {
 435                                 renderstats.world_leafs++;
 436                                 leaf = leafstack[--leafstackpos];
 437                                 r_worldleafvisible[leaf - model->brush.data_leafs] = true;
 438                                 // mark any surfaces bounding this leaf
 439                                 if (leaf->numleafsurfaces)
 440                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 441                                                 r_worldsurfacevisible[*mark] = true;
 442                                 // follow portals into other leafs
 443                                 // the checks are:
 444                                 // if viewer is behind portal (portal faces outward into the scene)
 445                                 // and the portal polygon's bounding box is on the screen
 446                                 // and the leaf has not been visited yet
 447                                 // and the leaf is visible in the pvs
 448                                 // (the first two checks won't cause as many cache misses as the leaf checks)
 449                                 for (p = leaf->portals;p;p = p->next)
 450                                 {
 451                                         renderstats.world_portals++;
 452                                         if (DotProduct(r_vieworigin, p->plane.normal) < (p->plane.dist + 1) && !R_CullBox(p->mins, p->maxs) && !r_worldleafvisible[p->past - model->brush.data_leafs] && CHECKPVSBIT(r_pvsbits, p->past->clusterindex))
 453                                                 leafstack[leafstackpos++] = p->past;
 454                                 }
 455                         }
 456                 }
 457         }
 458
 459         if (r_drawportals.integer)
 460                 R_DrawPortals();
 461 }
 462
 463 void R_Q1BSP_DrawSky(entity_render_t *ent)
 464 {
 465         if (ent->model == NULL)
 466                 return;
 467         R_DrawSurfaces(ent, true);
 468 }
 469
 470 void R_Q1BSP_Draw(entity_render_t *ent)
 471 {
 472         model_t *model = ent->model;
 473         if (model == NULL)
 474                 return;
 475         R_DrawSurfaces(ent, false);
 476 }
 477
 478 typedef struct r_q1bsp_getlightinfo_s
 479 {
 480         model_t *model;
 481         vec3_t relativelightorigin;
 482         float lightradius;
 483         int *outleaflist;
 484         unsigned char *outleafpvs;
 485         int outnumleafs;
 486         int *outsurfacelist;
 487         unsigned char *outsurfacepvs;
 488         int outnumsurfaces;
 489         vec3_t outmins;
 490         vec3_t outmaxs;
 491         vec3_t lightmins;
 492         vec3_t lightmaxs;
 493         const unsigned char *pvs;
 494 }
 495 r_q1bsp_getlightinfo_t;
 496
 497 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 498 {
 499         int sides;
 500         mleaf_t *leaf;
 501         for (;;)
 502         {
 503                 mplane_t *plane = node->plane;
 504                 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 505                 //      return;
 506                 if (!plane)
 507                         break;
 508                 if (plane->type < 3)
 509                         sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
 510                 else
 511                         sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
 512                 if (sides == 3)
 513                 {
 514                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 515                         node = node->children[1];
 516                 }
 517                 else if (sides == 0)
 518                         return; // ERROR: NAN bounding box!
 519                 else
 520                         node = node->children[sides - 1];
 521         }
 522         leaf = (mleaf_t *)node;
 523         if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
 524         {
 525                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 526                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 527                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 528                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 529                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 530                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 531                 if (info->outleafpvs)
 532                 {
 533                         int leafindex = leaf - info->model->brush.data_leafs;
 534                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 535                         {
 536                                 SETPVSBIT(info->outleafpvs, leafindex);
 537                                 info->outleaflist[info->outnumleafs++] = leafindex;
 538                         }
 539                 }
 540                 if (info->outsurfacepvs)
 541                 {
 542                         int leafsurfaceindex;
 543                         for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 544                         {
 545                                 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 546                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 547                                 {
 548                                         msurface_t *surface = info->model->data_surfaces + surfaceindex;
 549                                         if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 550                                         {
 551                                                 int triangleindex, t;
 552                                                 const int *e;
 553                                                 const vec_t *v[3];
 554                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 555                                                 {
 556                                                         v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 557                                                         v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 558                                                         v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 559                                                         if (PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && info->lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && info->lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && info->lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && info->lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && info->lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && info->lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
 560                                                         {
 561                                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 562                                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 563                                                                 break;
 564                                                         }
 565                                                 }
 566                                         }
 567                                 }
 568                         }
 569                 }
 570         }
 571 }
 572
 573 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)
 574 {
 575         r_q1bsp_getlightinfo_t info;
 576         VectorCopy(relativelightorigin, info.relativelightorigin);
 577         info.lightradius = lightradius;
 578         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 579         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 580         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 581         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 582         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 583         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 584         if (ent->model == NULL)
 585         {
 586                 VectorCopy(info.lightmins, outmins);
 587                 VectorCopy(info.lightmaxs, outmaxs);
 588                 *outnumleafspointer = 0;
 589                 *outnumsurfacespointer = 0;
 590                 return;
 591         }
 592         info.model = ent->model;
 593         info.outleaflist = outleaflist;
 594         info.outleafpvs = outleafpvs;
 595         info.outnumleafs = 0;
 596         info.outsurfacelist = outsurfacelist;
 597         info.outsurfacepvs = outsurfacepvs;
 598         info.outnumsurfaces = 0;
 599         VectorCopy(info.relativelightorigin, info.outmins);
 600         VectorCopy(info.relativelightorigin, info.outmaxs);
 601         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 602         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 603         if (info.model->brush.GetPVS)
 604                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 605         else
 606                 info.pvs = NULL;
 607         R_UpdateAllTextureInfo(ent);
 608         if (r_shadow_compilingrtlight)
 609         {
 610                 // use portal recursion for exact light volume culling, and exact surface checking
 611                 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);
 612         }
 613         else if (r_shadow_realtime_dlight_portalculling.integer)
 614         {
 615                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 616                 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);
 617         }
 618         else
 619         {
 620                 // use BSP recursion as lights are often small
 621                 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
 622         }
 623
 624         // limit combined leaf box to light boundaries
 625         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 626         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 627         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 628         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 629         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 630         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 631
 632         *outnumleafspointer = info.outnumleafs;
 633         *outnumsurfacespointer = info.outnumsurfaces;
 634 }
 635
 636 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
 637 {
 638         model_t *model = ent->model;
 639         msurface_t *surface;
 640         int surfacelistindex;
 641         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 642         texture_t *texture;
 643         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 644         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 645         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 646         {
 647                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 648                 texture = surface->texture;
 649                 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 650                         continue;
 651                 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 652                         continue;
 653                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs);
 654         }
 655         R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + projectdistance, numshadowmark, shadowmarklist);
 656         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
 657 }
 658
 659 extern float *rsurface_vertex3f;
 660 extern float *rsurface_svector3f;
 661 extern float *rsurface_tvector3f;
 662 extern float *rsurface_normal3f;
 663 extern void RSurf_SetVertexPointer(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t modelorg, qboolean generatenormals, qboolean generatetangents);
 664
 665 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
 666 {
 667         model_t *model = ent->model;
 668         msurface_t *surface;
 669         int surfacelistindex;
 670         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 671         vec3_t modelorg;
 672         texture_t *texture;
 673         // check the box in modelspace, it was already checked in worldspace
 674         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 675                 return;
 676         R_UpdateAllTextureInfo(ent);
 677         if (model->brush.shadowmesh)
 678         {
 679                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 680                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 681                 {
 682                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 683                         texture = surface->texture->currentframe;
 684                         if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 685                                 continue;
 686                         if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
 687                                 continue;
 688                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 689                 }
 690                 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, lightradius + model->radius + projectdistance, numshadowmark, shadowmarklist);
 691         }
 692         else
 693         {
 694                 projectdistance = lightradius + ent->model->radius*2;
 695                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 696                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 697                 {
 698                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 699                         // FIXME: get current skin
 700                         texture = surface->texture;//R_FetchAliasSkin(ent, surface->groupmesh);
 701                         if (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT) || !surface->num_triangles)
 702                                 continue;
 703                         RSurf_SetVertexPointer(ent, texture, surface, modelorg, false, false);
 704                         // identify lit faces within the bounding box
 705                         R_Shadow_PrepareShadowMark(surface->groupmesh->num_triangles);
 706                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 707                         R_Shadow_VolumeFromList(surface->groupmesh->num_vertices, surface->groupmesh->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, surface->groupmesh->data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
 708                 }
 709         }
 710 }
 711
 712 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
 713 {
 714         msurface_t *surface = ent->model->data_surfaces + surfacenumber;
 715         texture_t *texture = surface->texture;
 716         R_UpdateTextureInfo(ent, texture);
 717         texture = texture->currentframe;
 718         R_Shadow_RenderMode_Begin();
 719         R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
 720         R_Shadow_RenderMode_Lighting(false, true);
 721         R_Shadow_SetupEntityLight(ent);
 722         R_Shadow_RenderSurfacesLighting(ent, texture, 1, &surface);
 723         R_Shadow_RenderMode_End();
 724 }
 725
 726 static void R_Q1BSP_DrawLight_TransparentBatch(const entity_render_t *ent, texture_t *texture, int batchnumsurfaces, msurface_t **batchsurfacelist)
 727 {
 728         int batchsurfaceindex;
 729         msurface_t *batchsurface;
 730         vec3_t tempcenter, center;
 731         for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
 732         {
 733                 batchsurface = batchsurfacelist[batchsurfaceindex];
 734                 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
 735                 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
 736                 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
 737                 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
 738                 R_MeshQueue_AddTransparent(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_vieworigin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, batchsurface - ent->model->data_surfaces, r_shadow_rtlight);
 739         }
 740 }
 741
 742 #define RSURF_MAX_BATCHSURFACES 1024
 743
 744 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
 745 {
 746         model_t *model = ent->model;
 747         msurface_t *surface;
 748         texture_t *texture;
 749         int surfacelistindex, batchnumsurfaces;
 750         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
 751         vec3_t modelorg;
 752         texture_t *tex;
 753         qboolean skip;
 754         R_UpdateAllTextureInfo(ent);
 755         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 756         tex = NULL;
 757         texture = NULL;
 758         skip = false;
 759         batchnumsurfaces = 0;
 760         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 761         {
 762                 if ((ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]]))
 763                         continue;
 764                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 765                 renderstats.lights_lighttriangles += surface->num_triangles;
 766                 if (tex != surface->texture)
 767                 {
 768                         if (batchnumsurfaces > 0)
 769                         {
 770                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 771                                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 772                                 else
 773                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 774                                 batchnumsurfaces = 0;
 775                         }
 776                         tex = surface->texture;
 777                         texture = surface->texture->currentframe;
 778                         skip = (texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
 779                         if (skip)
 780                                 continue;
 781                 }
 782                 if (!skip && surface->num_triangles)
 783                 {
 784                         if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
 785                         {
 786                                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 787                                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 788                                 else
 789                                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 790                                 batchnumsurfaces = 0;
 791                         }
 792                         batchsurfacelist[batchnumsurfaces++] = surface;
 793                 }
 794         }
 795         if (batchnumsurfaces > 0)
 796         {
 797                 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
 798                         R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
 799                 else
 800                         R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
 801                 batchnumsurfaces = 0;
 802         }
 803         qglEnable(GL_CULL_FACE);
 804 }
 805
 806 //Made by [515]
 807 void R_ReplaceWorldTexture (void)
 808 {
 809         model_t         *m;
 810         texture_t       *t;
 811         int                     i;
 812         const char      *r, *newt;
 813         m = r_refdef.worldmodel;
 814
 815         if(Cmd_Argc() < 2)
 816         {
 817                 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
 818                 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
 819                 return;
 820         }
 821         if(!cl.islocalgame || !cl.worldmodel)
 822         {
 823                 Con_Print("This command works only in singleplayer\n");
 824                 return;
 825         }
 826         r = Cmd_Argv(1);
 827         newt = Cmd_Argv(2);
 828         if(!newt[0])
 829                 newt = r;
 830         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 831         {
 832                 if(t->width && !strcasecmp(t->name, r))
 833                 {
 834                         if(Mod_LoadSkinFrame(&t->skin, (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
 835                         {
 836                                 Con_Printf("%s replaced with %s\n", r, newt);
 837                                 return;
 838                         }
 839                         else
 840                         {
 841                                 Con_Printf("%s was not found\n", newt);
 842                                 Mod_LoadSkinFrame(&t->skin, (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
 843                                 return;
 844                         }
 845                 }
 846         }
 847 }
 848
 849 //Made by [515]
 850 void R_ListWorldTextures (void)
 851 {
 852         model_t         *m;
 853         texture_t       *t;
 854         int                     i;
 855         m = r_refdef.worldmodel;
 856
 857         Con_Print("Worldmodel textures :\n");
 858         for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
 859                 if(t->skin.base != r_texture_notexture)
 860                         Con_Printf("%s\n", t->name);
 861 }
 862
 863 #if 0
 864 static void gl_surf_start(void)
 865 {
 866 }
 867
 868 static void gl_surf_shutdown(void)
 869 {
 870 }
 871
 872 static void gl_surf_newmap(void)
 873 {
 874 }
 875 #endif
 876
 877 void GL_Surf_Init(void)
 878 {
 879
 880         Cvar_RegisterVariable(&r_ambient);
 881         Cvar_RegisterVariable(&r_drawportals);
 882         Cvar_RegisterVariable(&r_lockpvs);
 883         Cvar_RegisterVariable(&r_lockvisibility);
 884         Cvar_RegisterVariable(&r_useportalculling);
 885         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 886
 887         Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");   // By [515]
 888         Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map"); // By [515]
 889
 890         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
 891 }
 892