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_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
  32 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
  33 cvar_t r_drawcollisionbrushes_polygonfactor = {0, "r_drawcollisionbrushes_polygonfactor", "-1"};
  34 cvar_t r_drawcollisionbrushes_polygonoffset = {0, "r_drawcollisionbrushes_polygonoffset", "0"};
  35 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0"};
  36
  37 // flag arrays used for visibility checking on world model
  38 // (all other entities have no per-surface/per-leaf visibility checks)
  39 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
  40 qbyte r_pvsbits[(32768+7)>>3];
  41 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
  42 qbyte r_worldleafvisible[32768];
  43 // TODO: dynamic resize according to r_refdef.worldmodel->num_surfaces
  44 qbyte r_worldsurfacevisible[262144];
  45
  46 /*
  47 ===============
  48 R_BuildLightMap
  49
  50 Combine and scale multiple lightmaps into the 8.8 format in blocklights
  51 ===============
  52 */
  53 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
  54 {
  55         int smax, tmax, i, j, size, size3, maps, stride, l;
  56         unsigned int *bl, scale;
  57         qbyte *lightmap, *out, *stain;
  58         static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
  59         static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
  60
  61         // update cached lighting info
  62         surface->cached_dlight = 0;
  63
  64         smax = (surface->lightmapinfo->extents[0]>>4)+1;
  65         tmax = (surface->lightmapinfo->extents[1]>>4)+1;
  66         size = smax*tmax;
  67         size3 = size*3;
  68         lightmap = surface->lightmapinfo->samples;
  69
  70 // set to full bright if no light data
  71         bl = intblocklights;
  72         if (!ent->model->brushq1.lightdata)
  73         {
  74                 for (i = 0;i < size3;i++)
  75                         bl[i] = 255*256;
  76         }
  77         else
  78         {
  79 // clear to no light
  80                 memset(bl, 0, size*3*sizeof(unsigned int));
  81
  82 // add all the lightmaps
  83                 if (lightmap)
  84                 {
  85                         bl = intblocklights;
  86                         for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
  87                                 for (scale = d_lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
  88                                         bl[i] += lightmap[i] * scale;
  89                 }
  90         }
  91
  92         stain = surface->lightmapinfo->stainsamples;
  93         bl = intblocklights;
  94         out = templight;
  95         // the >> 16 shift adjusts down 8 bits to account for the stainmap
  96         // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
  97         // be doubled during rendering to achieve 2x overbright
  98         // (0 = 0.0, 128 = 1.0, 256 = 2.0)
  99         if (ent->model->brushq1.lightmaprgba)
 100         {
 101                 stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 4;
 102                 for (i = 0;i < tmax;i++, out += stride)
 103                 {
 104                         for (j = 0;j < smax;j++)
 105                         {
 106                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 107                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 108                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 109                                 *out++ = 255;
 110                         }
 111                 }
 112         }
 113         else
 114         {
 115                 stride = (surface->lightmapinfo->lightmaptexturestride - smax) * 3;
 116                 for (i = 0;i < tmax;i++, out += stride)
 117                 {
 118                         for (j = 0;j < smax;j++)
 119                         {
 120                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 121                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 122                                 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
 123                         }
 124                 }
 125         }
 126
 127         R_UpdateTexture(surface->lightmaptexture, templight);
 128 }
 129
 130 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
 131 {
 132         float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
 133         msurface_t *surface, *endsurface;
 134         int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
 135         qbyte *bl;
 136         vec3_t impact;
 137
 138         maxdist = radius * radius;
 139         invradius = 1.0f / radius;
 140
 141 loc0:
 142         if (!node->plane)
 143                 return;
 144         ndist = PlaneDiff(origin, node->plane);
 145         if (ndist > radius)
 146         {
 147                 node = node->children[0];
 148                 goto loc0;
 149         }
 150         if (ndist < -radius)
 151         {
 152                 node = node->children[1];
 153                 goto loc0;
 154         }
 155
 156         dist2 = ndist * ndist;
 157         maxdist3 = maxdist - dist2;
 158
 159         if (node->plane->type < 3)
 160         {
 161                 VectorCopy(origin, impact);
 162                 impact[node->plane->type] -= ndist;
 163         }
 164         else
 165         {
 166                 impact[0] = origin[0] - node->plane->normal[0] * ndist;
 167                 impact[1] = origin[1] - node->plane->normal[1] * ndist;
 168                 impact[2] = origin[2] - node->plane->normal[2] * ndist;
 169         }
 170
 171         for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
 172         {
 173                 if (surface->lightmapinfo->stainsamples)
 174                 {
 175                         smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
 176                         tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
 177
 178                         impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
 179                         impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
 180
 181                         s = bound(0, impacts, smax * 16) - impacts;
 182                         t = bound(0, impactt, tmax * 16) - impactt;
 183                         i = s * s + t * t + dist2;
 184                         if (i > maxdist)
 185                                 continue;
 186
 187                         // reduce calculations
 188                         for (s = 0, i = impacts; s < smax; s++, i -= 16)
 189                                 sdtable[s] = i * i + dist2;
 190
 191                         bl = surface->lightmapinfo->stainsamples;
 192                         smax3 = smax * 3;
 193                         stained = false;
 194
 195                         i = impactt;
 196                         for (t = 0;t < tmax;t++, i -= 16)
 197                         {
 198                                 td = i * i;
 199                                 // make sure some part of it is visible on this line
 200                                 if (td < maxdist3)
 201                                 {
 202                                         maxdist2 = maxdist - td;
 203                                         for (s = 0;s < smax;s++)
 204                                         {
 205                                                 if (sdtable[s] < maxdist2)
 206                                                 {
 207                                                         ratio = lhrandom(0.0f, 1.0f);
 208                                                         a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
 209                                                         if (a >= (1.0f / 64.0f))
 210                                                         {
 211                                                                 if (a > 1)
 212                                                                         a = 1;
 213                                                                 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
 214                                                                 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
 215                                                                 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
 216                                                                 stained = true;
 217                                                         }
 218                                                 }
 219                                                 bl += 3;
 220                                         }
 221                                 }
 222                                 else // skip line
 223                                         bl += smax3;
 224                         }
 225                         // force lightmap upload
 226                         if (stained)
 227                                 surface->cached_dlight = true;
 228                 }
 229         }
 230
 231         if (node->children[0]->plane)
 232         {
 233                 if (node->children[1]->plane)
 234                 {
 235                         R_StainNode(node->children[0], model, origin, radius, fcolor);
 236                         node = node->children[1];
 237                         goto loc0;
 238                 }
 239                 else
 240                 {
 241                         node = node->children[0];
 242                         goto loc0;
 243                 }
 244         }
 245         else if (node->children[1]->plane)
 246         {
 247                 node = node->children[1];
 248                 goto loc0;
 249         }
 250 }
 251
 252 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)
 253 {
 254         int n;
 255         float fcolor[8];
 256         entity_render_t *ent;
 257         model_t *model;
 258         vec3_t org;
 259         if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
 260                 return;
 261         fcolor[0] = cr1;
 262         fcolor[1] = cg1;
 263         fcolor[2] = cb1;
 264         fcolor[3] = ca1 * (1.0f / 64.0f);
 265         fcolor[4] = cr2 - cr1;
 266         fcolor[5] = cg2 - cg1;
 267         fcolor[6] = cb2 - cb1;
 268         fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
 269
 270         R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
 271
 272         // look for embedded bmodels
 273         for (n = 0;n < cl_num_brushmodel_entities;n++)
 274         {
 275                 ent = &cl_entities[cl_brushmodel_entities[n]].render;
 276                 model = ent->model;
 277                 if (model && model->name[0] == '*')
 278                 {
 279                         Mod_CheckLoaded(model);
 280                         if (model->brush.data_nodes)
 281                         {
 282                                 Matrix4x4_Transform(&ent->inversematrix, origin, org);
 283                                 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
 284                         }
 285                 }
 286         }
 287 }
 288
 289
 290 /*
 291 =============================================================
 292
 293         BRUSH MODELS
 294
 295 =============================================================
 296 */
 297
 298 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
 299 {
 300         int i;
 301         float *v;
 302         rmeshstate_t m;
 303         const mportal_t *portal = calldata1;
 304         GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 305         GL_DepthMask(false);
 306         GL_DepthTest(true);
 307         R_Mesh_Matrix(&r_identitymatrix);
 308
 309         memset(&m, 0, sizeof(m));
 310         m.pointer_vertex = varray_vertex3f;
 311         R_Mesh_State(&m);
 312
 313         i = calldata2;
 314         GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
 315                          ((i & 0x0038) >> 3) * (1.0f / 7.0f),
 316                          ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
 317                          0.125f);
 318         if (PlaneDiff(r_vieworigin, (&portal->plane)) < 0)
 319         {
 320                 for (i = portal->numpoints - 1, v = varray_vertex3f;i >= 0;i--, v += 3)
 321                         VectorCopy(portal->points[i].position, v);
 322         }
 323         else
 324                 for (i = 0, v = varray_vertex3f;i < portal->numpoints;i++, v += 3)
 325                         VectorCopy(portal->points[i].position, v);
 326         GL_LockArrays(0, portal->numpoints);
 327         R_Mesh_Draw(0, portal->numpoints, portal->numpoints - 2, polygonelements);
 328         GL_LockArrays(0, 0);
 329 }
 330
 331 // LordHavoc: this is just a nice debugging tool, very slow
 332 static void R_DrawPortals(void)
 333 {
 334         int i, leafnum;//, portalnum;
 335         mportal_t *portal;
 336         float center[3], f;
 337         model_t *model = r_refdef.worldmodel;
 338         if (model == NULL)
 339                 return;
 340         for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
 341         {
 342                 if (r_worldleafvisible[leafnum])
 343                 {
 344                         //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
 345                         for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
 346                         {
 347                                 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
 348                                 if (!R_CullBox(portal->mins, portal->maxs))
 349                                 {
 350                                         VectorClear(center);
 351                                         for (i = 0;i < portal->numpoints;i++)
 352                                                 VectorAdd(center, portal->points[i].position, center);
 353                                         f = ixtable[portal->numpoints];
 354                                         VectorScale(center, f, center);
 355                                         //R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, portal, portalnum);
 356                                         R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, portal, leafnum);
 357                                 }
 358                         }
 359                 }
 360         }
 361 }
 362
 363 static void R_DrawCollisionBrush(colbrushf_t *brush)
 364 {
 365         int i;
 366         rmeshstate_t m;
 367         memset(&m, 0, sizeof(m));
 368         m.pointer_vertex = brush->points->v;
 369         R_Mesh_State(&m);
 370         i = (int)(((size_t)brush) / sizeof(colbrushf_t));
 371         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 372         GL_LockArrays(0, brush->numpoints);
 373         R_Mesh_Draw(0, brush->numpoints, brush->numtriangles, brush->elements);
 374         GL_LockArrays(0, 0);
 375 }
 376
 377 static void R_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
 378 {
 379         int i;
 380         rmeshstate_t m;
 381         if (!surface->num_collisiontriangles)
 382                 return;
 383         memset(&m, 0, sizeof(m));
 384         m.pointer_vertex = surface->data_collisionvertex3f;
 385         R_Mesh_State(&m);
 386         i = (int)(((size_t)surface) / sizeof(msurface_t));
 387         GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
 388         GL_LockArrays(0, surface->num_collisionvertices);
 389         R_Mesh_Draw(0, surface->num_collisionvertices, surface->num_collisiontriangles, surface->data_collisionelement3i);
 390         GL_LockArrays(0, 0);
 391 }
 392
 393 void R_WorldVisibility(void)
 394 {
 395         int i, j, *mark;
 396         mleaf_t *leaf;
 397         mleaf_t *viewleaf;
 398         model_t *model = r_refdef.worldmodel;
 399
 400         if (!model)
 401                 return;
 402
 403         // if possible find the leaf the view origin is in
 404         viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
 405         // if possible fetch the visible cluster bits
 406         if (model->brush.FatPVS)
 407                 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
 408
 409         // clear the visible surface and leaf flags arrays
 410         memset(r_worldsurfacevisible, 0, model->num_surfaces);
 411         memset(r_worldleafvisible, 0, model->brush.num_leafs);
 412
 413         // if the user prefers surfaceworldnode (testing?) or the viewleaf could
 414         // not be found, or the viewleaf is not part of the visible world
 415         // (floating around in the void), use the pvs method
 416         if (r_surfaceworldnode.integer || !viewleaf || viewleaf->clusterindex < 0)
 417         {
 418                 // pvs method:
 419                 // similar to quake's RecursiveWorldNode but without cache misses
 420                 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
 421                 {
 422                         // if leaf is in current pvs and on the screen, mark its surfaces
 423                         if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
 424                         {
 425                                 c_leafs++;
 426                                 r_worldleafvisible[j] = true;
 427                                 if (leaf->numleafsurfaces)
 428                                         for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 429                                                 r_worldsurfacevisible[*mark] = true;
 430                         }
 431                 }
 432         }
 433         else
 434         {
 435                 int leafstackpos;
 436                 mportal_t *p;
 437                 mleaf_t *leafstack[8192];
 438                 // portal method:
 439                 // follows portals leading outward from viewleaf, does not venture
 440                 // offscreen or into leafs that are not visible, faster than Quake's
 441                 // RecursiveWorldNode and vastly better in unvised maps, often culls a
 442                 // lot of surface that pvs alone would miss
 443                 leafstack[0] = viewleaf;
 444                 leafstackpos = 1;
 445                 while (leafstackpos)
 446                 {
 447                         c_leafs++;
 448                         leaf = leafstack[--leafstackpos];
 449                         r_worldleafvisible[leaf - model->brush.data_leafs] = true;
 450                         // mark any surfaces bounding this leaf
 451                         if (leaf->numleafsurfaces)
 452                                 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
 453                                         r_worldsurfacevisible[*mark] = true;
 454                         // follow portals into other leafs
 455                         // the checks are:
 456                         // if viewer is behind portal (portal faces outward into the scene)
 457                         // and the portal polygon's bounding box is on the screen
 458                         // and the leaf has not been visited yet
 459                         // and the leaf is visible in the pvs
 460                         // (the first two checks won't cause as many cache misses as the leaf checks)
 461                         for (p = leaf->portals;p;p = p->next)
 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         if (r_drawportals.integer)
 468                 R_DrawPortals();
 469 }
 470
 471 void R_Q1BSP_DrawSky(entity_render_t *ent)
 472 {
 473         if (ent->model == NULL)
 474                 return;
 475         if (r_drawcollisionbrushes.integer < 2)
 476                 R_DrawSurfaces(ent, true);
 477 }
 478
 479 void R_Q1BSP_Draw(entity_render_t *ent)
 480 {
 481         if (ent->model == NULL)
 482                 return;
 483         c_bmodels++;
 484         if (r_drawcollisionbrushes.integer < 2)
 485                 R_DrawSurfaces(ent, false);
 486         if (r_drawcollisionbrushes.integer >= 1 && ent->model->brush.num_brushes)
 487         {
 488                 int i;
 489                 model_t *model = ent->model;
 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 extern float *rsurface_vertex3f;
 661 extern float *rsurface_svector3f;
 662 extern float *rsurface_tvector3f;
 663 extern float *rsurface_normal3f;
 664 extern void RSurf_SetVertexPointer(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t modelorg);
 665
 666 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)
 667 {
 668         model_t *model = ent->model;
 669         msurface_t *surface;
 670         int surfacelistindex;
 671         float projectdistance = lightradius + model->radius + r_shadow_projectdistance.value;
 672         vec3_t modelorg;
 673         texture_t *texture;
 674         // check the box in modelspace, it was already checked in worldspace
 675         if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
 676                 return;
 677         if (r_drawcollisionbrushes.integer >= 2)
 678                 return;
 679         if (!r_shadow_compilingrtlight)
 680                 R_UpdateAllTextureInfo(ent);
 681         if (model->brush.shadowmesh)
 682         {
 683                 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
 684                 if (r_shadow_compilingrtlight)
 685                 {
 686                         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 687                         {
 688                                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 689                                 texture = surface->texture;
 690                                 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 691                                         continue;
 692                                 if (texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
 693                                         continue;
 694                                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 695                         }
 696                 }
 697                 else
 698                 {
 699                         for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 700                         {
 701                                 surface = model->data_surfaces + surfacelist[surfacelistindex];
 702                                 texture = surface->texture->currentframe;
 703                                 if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
 704                                         continue;
 705                                 if (texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2))
 706                                         continue;
 707                                 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 708                         }
 709                 }
 710                 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);
 711         }
 712         else
 713         {
 714                 projectdistance = lightradius + ent->model->radius;
 715                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 716                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 717                 {
 718                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 719                         // FIXME: get current skin
 720                         texture = surface->texture;//R_FetchAliasSkin(ent, surface->groupmesh);
 721                         if (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT) || !surface->num_triangles)
 722                                 continue;
 723                         RSurf_SetVertexPointer(ent, texture, surface, modelorg);
 724                         // identify lit faces within the bounding box
 725                         R_Shadow_PrepareShadowMark(surface->groupmesh->num_triangles);
 726                         R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
 727                         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);
 728                 }
 729         }
 730 }
 731
 732 void R_Q1BSP_DrawLight(entity_render_t *ent, float *lightcolor, int numsurfaces, const int *surfacelist)
 733 {
 734         model_t *model = ent->model;
 735         msurface_t *surface;
 736         texture_t *texture;
 737         int surfacelistindex;
 738         vec3_t modelorg;
 739         if (r_drawcollisionbrushes.integer >= 2)
 740                 return;
 741         if (r_shadow_compilingrtlight)
 742         {
 743                 // if compiling an rtlight, capture the meshes
 744                 int tri;
 745                 int *e;
 746                 float *lightmins, *lightmaxs, *v[3], *vertex3f;
 747                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 748                 {
 749                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 750                         texture = surface->texture;
 751                         if ((texture->basematerialflags & (MATERIALFLAG_WALL | MATERIALFLAG_TRANSPARENT)) != MATERIALFLAG_WALL || !surface->num_triangles)
 752                                 continue;
 753                         e = surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle;
 754                         vertex3f = surface->groupmesh->data_vertex3f;
 755                         lightmins = r_shadow_compilingrtlight->cullmins;
 756                         lightmaxs = r_shadow_compilingrtlight->cullmaxs;
 757                         for (tri = 0;tri < surface->num_triangles;tri++, e += 3)
 758                         {
 759                                 v[0] = vertex3f + e[0] * 3;
 760                                 v[1] = vertex3f + e[1] * 3;
 761                                 v[2] = vertex3f + e[2] * 3;
 762                                 if (PointInfrontOfTriangle(r_shadow_compilingrtlight->shadoworigin, v[0], v[1], v[2]) && lightmaxs[0] > min(v[0][0], min(v[1][0], v[2][0])) && lightmins[0] < max(v[0][0], max(v[1][0], v[2][0])) && lightmaxs[1] > min(v[0][1], min(v[1][1], v[2][1])) && lightmins[1] < max(v[0][1], max(v[1][1], v[2][1])) && lightmaxs[2] > min(v[0][2], min(v[1][2], v[2][2])) && lightmins[2] < max(v[0][2], max(v[1][2], v[2][2])))
 763                                         Mod_ShadowMesh_AddMesh(r_shadow_mempool, r_shadow_compilingrtlight->static_meshchain_light, surface->texture->skin.base, surface->texture->skin.gloss, surface->texture->skin.nmap, surface->groupmesh->data_vertex3f, surface->groupmesh->data_svector3f, surface->groupmesh->data_tvector3f, surface->groupmesh->data_normal3f, surface->groupmesh->data_texcoordtexture2f, 1, e);
 764                         }
 765                 }
 766         }
 767         else
 768         {
 769                 R_UpdateAllTextureInfo(ent);
 770                 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
 771                 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
 772                 {
 773                         if (ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]])
 774                                 continue;
 775                         surface = model->data_surfaces + surfacelist[surfacelistindex];
 776                         texture = surface->texture->currentframe;
 777                         // FIXME: transparent surfaces need to be lit later
 778                         if ((texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_TRANSPARENT)) != MATERIALFLAG_WALL || !surface->num_triangles)
 779                                 continue;
 780                         if (texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
 781                                 qglDisable(GL_CULL_FACE);
 782                         RSurf_SetVertexPointer(ent, texture, surface, modelorg);
 783                         if (!rsurface_svector3f)
 784                         {
 785                                 rsurface_svector3f = varray_svector3f;
 786                                 rsurface_tvector3f = varray_tvector3f;
 787                                 rsurface_normal3f = varray_normal3f;
 788                                 Mod_BuildTextureVectorsAndNormals(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, rsurface_vertex3f, surface->groupmesh->data_texcoordtexture2f, surface->groupmesh->data_element3i + surface->num_firsttriangle * 3, rsurface_svector3f, rsurface_tvector3f, rsurface_normal3f);
 789                         }
 790                         if (ent->colormap >= 0)
 791                         {
 792                                 vec3_t lightcolorpants, lightcolorshirt;
 793                                 // 128-224 are backwards ranges
 794                                 int b = (ent->colormap & 0xF) << 4;b += (b >= 128 && b < 224) ? 4 : 12;
 795                                 if (texture->skin.pants && b >= 224)
 796                                 {
 797                                         qbyte *bcolor = (qbyte *) (&palette_complete[b]);
 798                                         lightcolorpants[0] = lightcolor[0] * bcolor[0] * (1.0f / 255.0f);
 799                                         lightcolorpants[1] = lightcolor[1] * bcolor[1] * (1.0f / 255.0f);
 800                                         lightcolorpants[2] = lightcolor[2] * bcolor[2] * (1.0f / 255.0f);
 801                                 }
 802                                 else
 803                                         VectorClear(lightcolorpants);
 804                                 // 128-224 are backwards ranges
 805                                 b = (ent->colormap & 0xF0);b += (b >= 128 && b < 224) ? 4 : 12;
 806                                 if (texture->skin.shirt && b >= 224)
 807                                 {
 808                                         qbyte *bcolor = (qbyte *) (&palette_complete[b]);
 809                                         lightcolorshirt[0] = lightcolor[0] * bcolor[0] * (1.0f / 255.0f);
 810                                         lightcolorshirt[1] = lightcolor[1] * bcolor[1] * (1.0f / 255.0f);
 811                                         lightcolorshirt[2] = lightcolor[2] * bcolor[2] * (1.0f / 255.0f);
 812                                 }
 813                                 else
 814                                         VectorClear(lightcolorshirt);
 815                                 R_Shadow_RenderLighting(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle), rsurface_vertex3f, rsurface_svector3f, rsurface_tvector3f, rsurface_normal3f, surface->groupmesh->data_texcoordtexture2f, lightcolor, lightcolorpants, lightcolorshirt, texture->skin.base, texture->skin.pants, texture->skin.shirt, texture->skin.nmap, texture->skin.gloss);
 816                         }
 817                         else
 818                                 R_Shadow_RenderLighting(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, (surface->groupmesh->data_element3i + 3 * surface->num_firsttriangle), rsurface_vertex3f, rsurface_svector3f, rsurface_tvector3f, rsurface_normal3f, surface->groupmesh->data_texcoordtexture2f, lightcolor, vec3_origin, vec3_origin, texture->skin.merged ? texture->skin.merged : texture->skin.base, NULL, NULL, texture->skin.nmap, texture->skin.gloss);
 819                         if (texture->textureflags & Q3TEXTUREFLAG_TWOSIDED)
 820                                 qglEnable(GL_CULL_FACE);
 821                 }
 822         }
 823 }
 824
 825 #if 0
 826 static void gl_surf_start(void)
 827 {
 828 }
 829
 830 static void gl_surf_shutdown(void)
 831 {
 832 }
 833
 834 static void gl_surf_newmap(void)
 835 {
 836 }
 837 #endif
 838
 839 void GL_Surf_Init(void)
 840 {
 841
 842         Cvar_RegisterVariable(&r_ambient);
 843         Cvar_RegisterVariable(&r_drawportals);
 844         Cvar_RegisterVariable(&r_testvis);
 845         Cvar_RegisterVariable(&r_detailtextures);
 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