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"};
  29 cvar_t r_drawportals = {0, "r_drawportals", "0"};
  30 cvar_t r_testvis = {0, "r_testvis", "0"};
  31 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
  32 cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
  33 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
  34 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
  35
  36 // flag arrays used for visibility checking on world model
  37 // (all other entities have no per-surface/per-leaf visibility checks)
  38 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
  39 qbyte r_pvsbits[(32768+7)>>3];
  40 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
  41 qbyte r_worldleafvisible[32768];
  42 // TODO: dynamic resize according to r_refdef.worldmodel->num_surfaces
  43 qbyte r_worldsurfacevisible[262144];
  44
  45 /*
  46 ===============
  47 R_BuildLightMap
  48
  49 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  50 ===============
  51 */
  52 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  53 {
  54         int smax, tmax, i, j, size, size3, maps, stride, l;
  55         unsigned int *bl, scale;
  56         qbyte *lightmap, *out, *stain;
  57         static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  58         static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  59
  60         // update cached lighting info
  61         surface->cached_dlight = 0;
  62
  63         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  64         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  65         size = smax*tmax;
  66         size3 = size*3;
  67         lightmap = surface->lightmapinfo->samples;
  68
  69 // set to full bright if no light data
  70         bl = intblocklights;
  71         if (!ent->model->brushq1.lightdata)
  72         {
  73                 for (i = 0;i < size3;i++)
  74                         bl[i] = 255*256;
  75         }
  76         else
  77         {
  78 // clear to no light
  79                 memset(bl, 0, size*3*sizeof(unsigned int));
  80
  81 // add all the lightmaps
  82                 if (lightmap)
  83                 {
  84                         bl = intblocklights;
  85                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  86                                 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  87                                         bl[i] += lightmap[i] * scale;
  88                 }
  89         }
  90
  91         stain = surface->lightmapinfo->stainsamples;
  92         bl = intblocklights;
  93         out = templight;
  94         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  95         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  96         // be doubled during rendering to achieve 2x overbright
  97         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  98         if (ent->model->brushq1.lightmaprgba)
  99         {
 100                 stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 4;
 101                 for (i = 0;i < tmax;i++, out += stride)
 102                 {
 103                         for (j = 0;j < smax;j++)
 104                         {
 105                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 106                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 107                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 108                                 *out++ = 255;
 109                         }
 110                 }
 111         }
 112         else
 113         {
 114                 stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 3;
 115                 for (i = 0;i < tmax;i++, out += stride)
 116                 {
 117                         for (j = 0;j < smax;j++)
 118                         {
 119                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 120                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 121                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 122                         }
 123                 }
 124         }
 125
 126         R_UpdateTexture(surface->lightmaptexture, templight);
 127 }
 128
 129 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 130 {
 131         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 132         msurface_t *surface, *endsurface;
 133         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 134         qbyte *bl;
 135         vec3_t impact;
 136
 137         maxdist = radius * radius;
 138         invradius = 1.0f / radius;
 139
 140 loc0:
 141         if (!node->plane)
 142                 return;
 143         ndist = PlaneDiff(origin, node->plane);
 144         if (ndist > radius)
 145         {
 146                 node = node->children[0];
 147                 goto loc0;
 148         }
 149         if (ndist < -radius)
 150         {
 151                 node = node->children[1];
 152                 goto loc0;
 153         }
 154
 155         dist2 = ndist * ndist;
 156         maxdist3 = maxdist - dist2;
 157
 158         if (node->plane->type < 3)
 159         {
 160                 VectorCopy(origin, impact);
 161                 impact[node->plane->type] -= ndist;
 162         }
 163         else
 164         {
 165                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 166                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 167                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 168         }
 169
 170         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 171         {
 172                 if (surface->lightmapinfo->stainsamples)
 173                 {
 174                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 175                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 176
 177                         impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
 178                         impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
 179
 180                         s = bound(0, impacts, smax * 16) - impacts;
 181                         t = bound(0, impactt, tmax * 16) - impactt;
 182                         i = s * s + t * t + dist2;
 183                         if (i > maxdist)
 184                                 continue;
 185
 186                         // reduce calculations
 187                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 188                                 sdtable[s] = i * i + dist2;
 189
 190                         bl = surface->lightmapinfo->stainsamples;
 191                         smax3 = smax * 3;
 192                         stained = false;
 193
 194                         i = impactt;
 195                         for (t = 0;t < tmax;t++, i -= 16)
 196                         {
 197                                 td = i * i;
 198                                 // make sure some part of it is visible on this line
 199                                 if (td < maxdist3)
 200                                 {
 201                                         maxdist2 = maxdist - td;
 202                                         for (s = 0;s < smax;s++)
 203                                         {
 204                                                 if (sdtable[s] < maxdist2)
 205                                                 {
 206                                                         ratio = lhrandom(0.0f, 1.0f);
 207                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 208                                                         if (a >= (1.0f / 64.0f))
 209                                                         {
 210                                                                 if (a > 1)
 211                                                                         a = 1;
 212                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 213                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 214                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 215                                                                 stained = true;
 216                                                         }
 217                                                 }
 218                                                 bl += 3;
 219                                         }
 220                                 }
 221                                 else // skip line
 222                                         bl += smax3;
 223                         }
 224                         // force lightmap upload
 225                         if (stained)
 226                                 surface->cached_dlight = true;
 227                 }
 228         }
 229
 230         if (node->children[0]->plane)
 231         {
 232                 if (node->children[1]->plane)
 233                 {
 234                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 235                         node = node->children[1];
 236                         goto loc0;
 237                 }
 238                 else
 239                 {
 240                         node = node->children[0];
 241                         goto loc0;
 242                 }
 243         }
 244         else if (node->children[1]->plane)
 245         {
 246                 node = node->children[1];
 247                 goto loc0;
 248         }
 249 }
 250
 251 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)
 252 {
 253         int n;
 254         float fcolor[8];
 255         entity_render_t *ent;
 256         model_t *model;
 257         vec3_t org;
 258         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 259                 return;
 260         fcolor[0] = cr1;
 261         fcolor[1] = cg1;
 262         fcolor[2] = cb1;
 263         fcolor[3] = ca1 * (1.0f / 64.0f);
 264         fcolor[4] = cr2 - cr1;
 265         fcolor[5] = cg2 - cg1;
 266         fcolor[6] = cb2 - cb1;
 267         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 268
 269         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 270
 271         // look for embedded bmodels
 272         for (n = 0;n < cl_num_brushmodel_entities;n++)
 273         {
 274                 ent = &cl_entities[cl_brushmodel_entities[n]].render;
 275                 model = ent->model;
 276                 if (model && model->name[0] == '*')
 277                 {
 278                         if (model->brush.data_nodes)
 279                         {
 280                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 281                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 282                         }
 283                 }
 284         }
 285 }
 286
 287
 288 /*
 289 =============================================================
 290
 291         BRUSH MODELS
 292
 293 =============================================================
 294 */
 295
 296 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
 297 {
 298         int i;
 299         float *v;
 300         rmeshstate_t m;
 301         const mportal_t *portal = (mportal_t *)calldata1;
 302         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 303         GL_DepthMask(false);
 304         GL_DepthTest(true);
 305         R_Mesh_Matrix(&r_identitymatrix);
 306
 307         memset(&m, 0, sizeof(m));
 308         m.pointer_vertex = varray_vertex3f;
 309         R_Mesh_State(&m);
 310
 311         i = calldata2;
 312         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
 313                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
 314                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
 315                          0.125f);
 316         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
 317         {
 318                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
 319                         VectorCopy(portal->points[i].position, v);
 320         }
 321         else
 322                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
 323                         VectorCopy(portal->points[i].position, v);
 324         GL_LockArrays(0, portal->numpoints);
 325         R_Mesh_Draw(0, portal->numpoints, portal->numpoints - 2, polygonelements);
 326         GL_LockArrays(0, 0);
 327 }
 328
 329 // LordHavoc: this is just a nice debugging tool, very slow
 330 static void R_DrawPortals(void)
 331 {
 332         int i, leafnum;//, portalnum;
 333         mportal_t *portal;
 334         float center[3], f;
 335         model_t *model = r_refdef.worldmodel;
 336         if (model == NULL)
 337                 return;
 338         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 339         {
 340                 if (r_worldleafvisible[leafnum])
 341                 {
 342                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 343                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 344                         {
 345                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 346                                 if (!R_CullBox(portal->mins, portal->maxs))
 347                                 {
 348                                         VectorClear(center);
 349                                         for (i = 0;i < portal->numpoints;i++)
 350                                                 VectorAdd(center, portal->points[i].position, center);
 351                                         f = ixtable[portal->numpoints];
 352                                         VectorScale(center, f, center);
 353                                         //R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, portal, portalnum);
 354                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, portal, leafnum);
 355                                 }
 356                         }
 357                 }
 358         }
 359 }
 360
 361 static void R_DrawCollisionBrush(colbrushf_t *brush)
 362 {
 363         int i;
 364         rmeshstate_t m;
 365         memset(&m, 0, sizeof(m));
 366         m.pointer_vertex = brush->points->v;
 367         R_Mesh_State(&m);
 368         i = (int)(((size_t)brush) / sizeof(colbrushf_t));
 369         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 370         GL_LockArrays(0, brush->numpoints);
 371         R_Mesh_Draw(0, brush->numpoints, brush->numtriangles, brush->elements);
 372         GL_LockArrays(0, 0);
 373 }
 374
 375 static void R_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
 376 {
 377         int i;
 378         rmeshstate_t m;
 379         if (!surface->num_collisiontriangles)
 380                 return;
 381         memset(&m, 0, sizeof(m));
 382         m.pointer_vertex = surface->data_collisionvertex3f;
 383         R_Mesh_State(&m);
 384         i = (int)(((size_t)surface) / sizeof(msurface_t));
 385         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 386         GL_LockArrays(0, surface->num_collisionvertices);
 387         R_Mesh_Draw(0, surface->num_collisionvertices, surface->num_collisiontriangles, surface->data_collisionelement3i);
 388         GL_LockArrays(0, 0);
 389 }
 390
 391 void R_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_vieworigin) : NULL;
 403         // if possible fetch the visible cluster bits
 404         if (model->brush.FatPVS)
 405                 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
 406
 407         // clear the visible surface and leaf flags arrays
 408         memset(r_worldsurfacevisible, 0, model->num_surfaces);
 409         memset(r_worldleafvisible, 0, model->brush.num_leafs);
 410
 411         // if the user prefers surfaceworldnode (testing?) or the viewleaf could
 412         // not be found, or the viewleaf is not part of the visible world
 413         // (floating around in the void), use the pvs method
 414         if (r_surfaceworldnode.integer || !viewleaf || viewleaf->clusterindex < 0)
 415         {
 416                 // pvs method:
 417                 // similar to quake's RecursiveWorldNode but without cache misses
 418                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 419                 {
 420                         // if leaf is in current pvs and on the screen, mark its surfaces
 421                         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 422                         {
 423                                 renderstats.world_leafs++;
 424                                 r_worldleafvisible[j] = true;
 425                                 if (leaf->numleafsurfaces)
 426                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 427                                                 r_worldsurfacevisible[*mark] = true;
 428                         }
 429                 }
 430         }
 431         else
 432         {
 433                 int leafstackpos;
 434                 mportal_t *p;
 435                 mleaf_t *leafstack[8192];
 436                 // portal method:
 437                 // follows portals leading outward from viewleaf, does not venture
 438                 // offscreen or into leafs that are not visible, faster than Quake's
 439                 // RecursiveWorldNode and vastly better in unvised maps, often culls a
 440                 // lot of surface that pvs alone would miss
 441                 leafstack[0] = viewleaf;
 442                 leafstackpos = 1;
 443                 while (leafstackpos)
 444                 {
 445                         renderstats.world_leafs++;
 446                         leaf = leafstack[--leafstackpos];
 447                         r_worldleafvisible[leaf - model->brush.data_leafs] = true;
 448                         // mark any surfaces bounding this leaf
 449                         if (leaf->numleafsurfaces)
 450                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 451                                         r_worldsurfacevisible[*mark] = true;
 452                         // follow portals into other leafs
 453                         // the checks are:
 454                         // if viewer is behind portal (portal faces outward into the scene)
 455                         // and the portal polygon's bounding box is on the screen
 456                         // and the leaf has not been visited yet
 457                         // and the leaf is visible in the pvs
 458                         // (the first two checks won't cause as many cache misses as the leaf checks)
 459                         for (p = leaf->portals;p;p = p->next)
 460                         {
 461                                 renderstats.world_portals++;
 462                                 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))
 463                                         leafstack[leafstackpos++] = p->past;
 464                         }
 465                 }
 466         }
 467
 468         if (r_drawportals.integer)
 469                 R_DrawPortals();
 470 }
 471
 472 void R_Q1BSP_DrawSky(entity_render_t *ent)
 473 {
 474         if (ent->model == NULL)
 475                 return;
 476         if (r_drawcollisionbrushes.integer < 2)
 477                 R_DrawSurfaces(ent, true);
 478 }
 479
 480 void R_Q1BSP_Draw(entity_render_t *ent)
 481 {
 482         model_t *model = ent->model;
 483         if (model == NULL)
 484                 return;
 485         if (r_drawcollisionbrushes.integer < 2)
 486                 R_DrawSurfaces(ent, false);
 487         if (r_drawcollisionbrushes.integer >= 1 && model->brush.num_brushes)
 488         {
 489                 int i;
 490                 msurface_t *surface;
 491                 q3mbrush_t *brush;
 492                 R_Mesh_Matrix(&ent->matrix);
 493                 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
 494                 GL_DepthMask(false);
 495                 GL_DepthTest(true);
 496                 qglPolygonOffset(r_drawcollisionbrushes_polygonfactor.value, r_drawcollisionbrushes_polygonoffset.value);
 497                 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
 498                         if (brush->colbrushf && brush->colbrushf->numtriangles)
 499                                 R_DrawCollisionBrush(brush->colbrushf);
 500                 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
 501                         if (surface->num_collisiontriangles)
 502                                 R_DrawCollisionSurface(ent, surface);
 503                 qglPolygonOffset(0, 0);
 504         }
 505 }
 506
 507 typedef struct r_q1bsp_getlightinfo_s
 508 {
 509         model_t *model;
 510         vec3_t relativelightorigin;
 511         float lightradius;
 512         int *outleaflist;
 513         qbyte *outleafpvs;
 514         int outnumleafs;
 515         int *outsurfacelist;
 516         qbyte *outsurfacepvs;
 517         int outnumsurfaces;
 518         vec3_t outmins;
 519         vec3_t outmaxs;
 520         vec3_t lightmins;
 521         vec3_t lightmaxs;
 522         const qbyte *pvs;
 523 }
 524 r_q1bsp_getlightinfo_t;
 525
 526 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
 527 {
 528         int sides;
 529         mleaf_t *leaf;
 530         for (;;)
 531         {
 532                 if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
 533                         return;
 534                 if (!node->plane)
 535                         break;
 536                 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, node->plane) - 1;
 537                 if (sides == 2)
 538                 {
 539                         R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
 540                         node = node->children[1];
 541                 }
 542                 else
 543                         node = node->children[sides];
 544         }
 545         leaf = (mleaf_t *)node;
 546         if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
 547         {
 548                 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
 549                 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
 550                 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
 551                 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
 552                 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
 553                 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
 554                 if (info->outleafpvs)
 555                 {
 556                         int leafindex = leaf - info->model->brush.data_leafs;
 557                         if (!CHECKPVSBIT(info->outleafpvs, leafindex))
 558                         {
 559                                 SETPVSBIT(info->outleafpvs, leafindex);
 560                                 info->outleaflist[info->outnumleafs++] = leafindex;
 561                         }
 562                 }
 563                 if (info->outsurfacepvs)
 564                 {
 565                         int leafsurfaceindex;
 566                         for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
 567                         {
 568                                 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
 569                                 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
 570                                 {
 571                                         msurface_t *surface = info->model->data_surfaces + surfaceindex;
 572                                         if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
 573                                         if ((surface->texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT)) == MATERIALFLAG_WALL)
 574                                         {
 575                                                 int triangleindex, t;
 576                                                 const int *e;
 577                                                 const vec_t *v[3];
 578                                                 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
 579                                                 {
 580                                                         v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
 581                                                         v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
 582                                                         v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
 583                                                         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])))
 584                                                         {
 585                                                                 SETPVSBIT(info->outsurfacepvs, surfaceindex);
 586                                                                 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
 587                                                                 break;
 588                                                         }
 589                                                 }
 590                                         }
 591                                 }
 592                         }
 593                 }
 594         }
 595 }
 596
 597 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, qbyte *outleafpvs, int *outnumleafspointer, int *outsurfacelist, qbyte *outsurfacepvs, int *outnumsurfacespointer)
 598 {
 599         r_q1bsp_getlightinfo_t info;
 600         VectorCopy(relativelightorigin, info.relativelightorigin);
 601         info.lightradius = lightradius;
 602         info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
 603         info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
 604         info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
 605         info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
 606         info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
 607         info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
 608         if (ent->model == NULL)
 609         {
 610                 VectorCopy(info.lightmins, outmins);
 611                 VectorCopy(info.lightmaxs, outmaxs);
 612                 *outnumleafspointer = 0;
 613                 *outnumsurfacespointer = 0;
 614                 return;
 615         }
 616         info.model = ent->model;
 617         info.outleaflist = outleaflist;
 618         info.outleafpvs = outleafpvs;
 619         info.outnumleafs = 0;
 620         info.outsurfacelist = outsurfacelist;
 621         info.outsurfacepvs = outsurfacepvs;
 622         info.outnumsurfaces = 0;
 623         VectorCopy(info.relativelightorigin, info.outmins);
 624         VectorCopy(info.relativelightorigin, info.outmaxs);
 625         memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
 626         memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
 627         if (info.model->brush.GetPVS)
 628                 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
 629         else
 630                 info.pvs = NULL;
 631         R_UpdateAllTextureInfo(ent);
 632         if (r_shadow_compilingrtlight)
 633         {
 634                 // use portal recursion for exact light volume culling, and exact surface checking
 635                 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);
 636         }
 637         else if (r_shadow_realtime_dlight_portalculling.integer)
 638         {
 639                 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
 640                 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);
 641         }
 642         else
 643         {
 644                 // use BSP recursion as lights are often small
 645                 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
 646         }
 647
 648         // limit combined leaf box to light boundaries
 649         outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
 650         outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
 651         outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
 652         outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
 653         outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
 654         outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
 655
 656         *outnumleafspointer = info.outnumleafs;
 657         *outnumsurfacespointer = info.outnumsurfaces;
 658 }
 659
 660 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
 661 {
 662         model_t *model = ent->model;
 663         msurface_t *surface;
 664         int surfacelistindex;
 665         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 666         texture_t *texture;
 667         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_shadow_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
 668         R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 669         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 670         {
 671                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 672                 texture = surface->texture;
 673                 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 674                         continue;
 675                 if (texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
 676                         continue;
 677                 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);
 678         }
 679         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);
 680         r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
 681 }
 682
 683 extern float *rsurface_vertex3f;
 684 extern float *rsurface_svector3f;
 685 extern float *rsurface_tvector3f;
 686 extern float *rsurface_normal3f;
 687 extern void RSurf_SetVertexPointer(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t modelorg);
 688
 689 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)
 690 {
 691         model_t *model = ent->model;
 692         msurface_t *surface;
 693         int surfacelistindex;
 694         float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
 695         vec3_t modelorg;
 696         texture_t *texture;
 697         // check the box in modelspace, it was already checked in worldspace
 698         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 699                 return;
 700         if (r_drawcollisionbrushes.integer >= 2)
 701                 return;
 702         R_UpdateAllTextureInfo(ent);
 703         if (model->brush.shadowmesh)
 704         {
 705                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 706                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 707                 {
 708                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 709                         texture = surface->texture->currentframe;
 710                         if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 711                                 continue;
 712                         if (texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
 713                                 continue;
 714                         R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 715                 }
 716                 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);
 717         }
 718         else
 719         {
 720                 projectdistance = lightradius + ent->model->radius*2;
 721                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 722                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 723                 {
 724                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 725                         // FIXME: get current skin
 726                         texture = surface->texture;//R_FetchAliasSkin(ent, surface->groupmesh);
 727                         if (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT) || !surface->num_triangles)
 728                                 continue;
 729                         RSurf_SetVertexPointer(ent, texture, surface, modelorg);
 730                         // identify lit faces within the bounding box
 731                         R_Shadow_PrepareShadowMark(surface->groupmesh->num_triangles);
 732                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 733                         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);
 734                 }
 735         }
 736 }
 737
 738 #define RSURF_MAX_BATCHSURFACES 1024
 739
 740 void R_Q1BSP_DrawLight(entity_render_t *ent, float *lightcolorbase, float *lightcolorpants, float *lightcolorshirt, int numsurfaces, const int *surfacelist)
 741 {
 742         model_t *model = ent->model;
 743         msurface_t *surface;
 744         texture_t *texture;
 745         int surfacelistindex, batchnumsurfaces;
 746         msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
 747         vec3_t modelorg;
 748         texture_t *tex;
 749         rtexture_t *basetexture = NULL;
 750         rtexture_t *glosstexture = NULL;
 751         float specularscale = 0;
 752         qboolean skip;
 753         if (r_drawcollisionbrushes.integer >= 2)
 754                 return;
 755         if (VectorLength2(lightcolorbase) + VectorLength2(lightcolorpants) + VectorLength2(lightcolorshirt) < 0.0001)
 756                 return;
 757         R_UpdateAllTextureInfo(ent);
 758         Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 759         tex = NULL;
 760         texture = NULL;
 761         skip = false;
 762         batchnumsurfaces = 0;
 763         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 764         {
 765                 if ((ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]]))
 766                         continue;
 767                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 768                 renderstats.lights_lighttriangles += surface->num_triangles;
 769                 if (tex != surface->texture)
 770                 {
 771                         if (batchnumsurfaces > 0)
 772                         {
 773                                 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist, lightcolorbase, lightcolorpants, lightcolorshirt, basetexture, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, glosstexture, specularscale, modelorg);
 774                                 batchnumsurfaces = 0;
 775                         }
 776                         tex = surface->texture;
 777                         texture = surface->texture->currentframe;
 778                         // FIXME: transparent surfaces need to be lit later
 779                         skip = (texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_TRANSPARENT)) != MATERIALFLAG_WALL;
 780                         if (skip)
 781                                 continue;
 782                         if (texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
 783                                 qglDisable(GL_CULL_FACE);
 784                         else
 785                                 qglEnable(GL_CULL_FACE);
 786                         glosstexture = r_texture_black;
 787                         specularscale = 0;
 788                         if (texture->skin.gloss)
 789                         {
 790                                 if (r_shadow_gloss.integer >= 1 && r_shadow_glossintensity.value > 0 && r_shadow_rtlight->specularscale > 0)
 791                                 {
 792                                         glosstexture = texture->skin.gloss;
 793                                         specularscale = r_shadow_rtlight->specularscale * r_shadow_glossintensity.value;
 794                                 }
 795                         }
 796                         else
 797                         {
 798                                 if (r_shadow_gloss.integer >= 2 && r_shadow_gloss2intensity.value > 0 && r_shadow_glossintensity.value > 0 && r_shadow_rtlight->specularscale > 0)
 799                                 {
 800                                         glosstexture = r_texture_white;
 801                                         specularscale = r_shadow_rtlight->specularscale * r_shadow_gloss2intensity.value;
 802                                 }
 803                         }
 804                         basetexture = (ent->colormap < 0 && texture->skin.merged) ? texture->skin.merged : texture->skin.base;
 805                         if ((r_shadow_rtlight->ambientscale + r_shadow_rtlight->diffusescale) * (VectorLength2(lightcolorbase) + VectorLength2(lightcolorpants) + VectorLength2(lightcolorshirt)) + specularscale * VectorLength2(lightcolorbase) < (1.0f / 1048576.0f))
 806                                 skip = true;
 807                 }
 808                 if (!skip && surface->num_triangles)
 809                 {
 810                         if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
 811                         {
 812                                 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist, lightcolorbase, lightcolorpants, lightcolorshirt, basetexture, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, glosstexture, specularscale, modelorg);
 813                                 batchnumsurfaces = 0;
 814                         }
 815                         batchsurfacelist[batchnumsurfaces++] = surface;
 816                 }
 817         }
 818         if (batchnumsurfaces > 0)
 819         {
 820                 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist, lightcolorbase, lightcolorpants, lightcolorshirt, basetexture, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, glosstexture, specularscale, modelorg);
 821                 batchnumsurfaces = 0;
 822         }
 823         qglEnable(GL_CULL_FACE);
 824 }
 825
 826 #if 0
 827 static void gl_surf_start(void)
 828 {
 829 }
 830
 831 static void gl_surf_shutdown(void)
 832 {
 833 }
 834
 835 static void gl_surf_newmap(void)
 836 {
 837 }
 838 #endif
 839
 840 void GL_Surf_Init(void)
 841 {
 842
 843         Cvar_RegisterVariable(&r_ambient);
 844         Cvar_RegisterVariable(&r_drawportals);
 845         Cvar_RegisterVariable(&r_testvis);
 846         Cvar_RegisterVariable(&r_surfaceworldnode);
 847         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonfactor);
 848         Cvar_RegisterVariable(&r_drawcollisionbrushes_polygonoffset);
 849         Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
 850
 851         //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);
 852 }
 853