2 Copyright (C) 1996-1997 Id Software, Inc.
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.
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.
13 See the GNU General Public License for more details.
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.
20 // r_surf.c: surface-related refresh code
26 #define MAX_LIGHTMAP_SIZE 256
28 cvar_t r_ambient = {0, "r_ambient", "0", "brighter world cheat (not allowed in multiplayer), value is 0-128"};
29 cvar_t r_drawportals = {0, "r_drawportals", "0", "shows portals (separating polygons) in world interior in quake1 maps"};
30 cvar_t r_lockpvs = {0, "r_lockpvs", "0", "disables pvs switching, allows you to walk around and inspect what is visible from a given location in the map (anything not visible from your current location will not be drawn)"};
31 cvar_t r_lockvisibility = {0, "r_lockvisibility", "0", "disables visibility updates, allows you to walk around and inspect what is visible from a given viewpoint in the map (anything offscreen at the moment this is enabled will not be drawn)"};
32 cvar_t r_useportalculling = {0, "r_useportalculling", "1", "use advanced portal culling visibility method to improve performance over just Potentially Visible Set, provides an even more significant speed improvement in unvised maps"};
33 cvar_t r_q3bsp_renderskydepth = {0, "r_q3bsp_renderskydepth", "0", "draws sky depth masking in q3 maps (as in q1 maps), this means for example that sky polygons can hide other things"};
35 // flag arrays used for visibility checking on world model
36 // (all other entities have no per-surface/per-leaf visibility checks)
37 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_clusters
38 unsigned char r_pvsbits[(32768+7)>>3];
39 // TODO: dynamic resize according to r_refdef.worldmodel->brush.num_leafs
40 unsigned char r_worldleafvisible[32768];
41 // TODO: dynamic resize according to r_refdef.worldmodel->num_surfaces
42 unsigned char r_worldsurfacevisible[262144];
48 Combine and scale multiple lightmaps into the 8.8 format in blocklights
51 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
53 int smax, tmax, i, j, size, size3, maps, l;
54 unsigned int *bl, scale;
55 unsigned char *lightmap, *out, *stain;
56 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
57 static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
59 // update cached lighting info
60 surface->cached_dlight = 0;
62 smax = (surface->lightmapinfo->extents[0]>>4)+1;
63 tmax = (surface->lightmapinfo->extents[1]>>4)+1;
66 lightmap = surface->lightmapinfo->samples;
68 // set to full bright if no light data
70 if (!ent->model->brushq1.lightdata)
72 for (i = 0;i < size3;i++)
78 memset(bl, 0, size*3*sizeof(unsigned int));
80 // add all the lightmaps
84 for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
85 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
86 bl[i] += lightmap[i] * scale;
90 stain = surface->lightmapinfo->stainsamples;
93 // the >> 16 shift adjusts down 8 bits to account for the stainmap
94 // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
95 // be doubled during rendering to achieve 2x overbright
96 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
97 if (ent->model->brushq1.lightmaprgba)
99 for (i = 0;i < tmax;i++)
101 for (j = 0;j < smax;j++)
103 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
104 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
105 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
112 for (i = 0;i < tmax;i++)
114 for (j = 0;j < smax;j++)
116 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
117 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
118 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
123 R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
126 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
128 float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
129 msurface_t *surface, *endsurface;
130 int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
134 maxdist = radius * radius;
135 invradius = 1.0f / radius;
140 ndist = PlaneDiff(origin, node->plane);
143 node = node->children[0];
148 node = node->children[1];
152 dist2 = ndist * ndist;
153 maxdist3 = maxdist - dist2;
155 if (node->plane->type < 3)
157 VectorCopy(origin, impact);
158 impact[node->plane->type] -= ndist;
162 impact[0] = origin[0] - node->plane->normal[0] * ndist;
163 impact[1] = origin[1] - node->plane->normal[1] * ndist;
164 impact[2] = origin[2] - node->plane->normal[2] * ndist;
167 for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
169 if (surface->lightmapinfo->stainsamples)
171 smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
172 tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
174 impacts = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0];
175 impactt = DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1];
177 s = bound(0, impacts, smax * 16) - impacts;
178 t = bound(0, impactt, tmax * 16) - impactt;
179 i = s * s + t * t + dist2;
183 // reduce calculations
184 for (s = 0, i = impacts; s < smax; s++, i -= 16)
185 sdtable[s] = i * i + dist2;
187 bl = surface->lightmapinfo->stainsamples;
192 for (t = 0;t < tmax;t++, i -= 16)
195 // make sure some part of it is visible on this line
198 maxdist2 = maxdist - td;
199 for (s = 0;s < smax;s++)
201 if (sdtable[s] < maxdist2)
203 ratio = lhrandom(0.0f, 1.0f);
204 a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
205 if (a >= (1.0f / 64.0f))
209 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
210 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
211 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
221 // force lightmap upload
223 surface->cached_dlight = true;
227 if (node->children[0]->plane)
229 if (node->children[1]->plane)
231 R_StainNode(node->children[0], model, origin, radius, fcolor);
232 node = node->children[1];
237 node = node->children[0];
241 else if (node->children[1]->plane)
243 node = node->children[1];
248 void R_Stain (const vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
252 entity_render_t *ent;
255 if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
260 fcolor[3] = ca1 * (1.0f / 64.0f);
261 fcolor[4] = cr2 - cr1;
262 fcolor[5] = cg2 - cg1;
263 fcolor[6] = cb2 - cb1;
264 fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
266 R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
268 // look for embedded bmodels
269 for (n = 0;n < cl.num_brushmodel_entities;n++)
271 ent = &cl.entities[cl.brushmodel_entities[n]].render;
273 if (model && model->name[0] == '*')
275 if (model->brush.data_nodes)
277 Matrix4x4_Transform(&ent->inversematrix, origin, org);
278 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
286 =============================================================
290 =============================================================
293 static void R_DrawPortal_Callback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
295 const mportal_t *portal = (mportal_t *)ent;
299 float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
300 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
303 qglDisable(GL_CULL_FACE);
304 R_Mesh_Matrix(&identitymatrix);
306 numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
308 memset(&m, 0, sizeof(m));
309 m.pointer_vertex = vertex3f;
313 GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
314 ((i & 0x0038) >> 3) * (1.0f / 7.0f),
315 ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
317 for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
318 VectorCopy(portal->points[i].position, v);
319 R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements);
320 qglEnable(GL_CULL_FACE);
323 // LordHavoc: this is just a nice debugging tool, very slow
324 static void R_DrawPortals(void)
329 model_t *model = r_refdef.worldmodel;
332 for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
334 if (r_worldleafvisible[leafnum])
336 //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
337 for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
339 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
340 if (!R_CullBox(portal->mins, portal->maxs))
343 for (i = 0;i < portal->numpoints;i++)
344 VectorAdd(center, portal->points[i].position, center);
345 f = ixtable[portal->numpoints];
346 VectorScale(center, f, center);
347 R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
354 static void R_DrawCollisionBrush(colbrushf_t *brush)
358 memset(&m, 0, sizeof(m));
359 m.pointer_vertex = brush->points->v;
361 i = (int)(((size_t)brush) / sizeof(colbrushf_t));
362 GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
363 GL_LockArrays(0, brush->numpoints);
364 R_Mesh_Draw(0, brush->numpoints, brush->numtriangles, brush->elements);
368 static void R_DrawCollisionSurface(entity_render_t *ent, msurface_t *surface)
372 if (!surface->num_collisiontriangles)
374 memset(&m, 0, sizeof(m));
375 m.pointer_vertex = surface->data_collisionvertex3f;
377 i = (int)(((size_t)surface) / sizeof(msurface_t));
378 GL_Color((i & 31) * (1.0f / 32.0f), ((i >> 5) & 31) * (1.0f / 32.0f), ((i >> 10) & 31) * (1.0f / 32.0f), 0.2f);
379 GL_LockArrays(0, surface->num_collisionvertices);
380 R_Mesh_Draw(0, surface->num_collisionvertices, surface->num_collisiontriangles, surface->data_collisionelement3i);
384 void R_WorldVisibility(void)
389 model_t *model = r_refdef.worldmodel;
394 // if possible find the leaf the view origin is in
395 viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
396 // if possible fetch the visible cluster bits
397 if (!r_lockpvs.integer && model->brush.FatPVS)
398 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
400 if (!r_lockvisibility.integer)
402 // clear the visible surface and leaf flags arrays
403 memset(r_worldsurfacevisible, 0, model->num_surfaces);
404 memset(r_worldleafvisible, 0, model->brush.num_leafs);
406 // if floating around in the void (no pvs data available, and no
407 // portals available), simply use all on-screen leafs.
408 if (!viewleaf || viewleaf->clusterindex < 0)
410 // no visibility method: (used when floating around in the void)
411 // simply cull each leaf to the frustum (view pyramid)
412 // similar to quake's RecursiveWorldNode but without cache misses
413 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
415 // if leaf is in current pvs and on the screen, mark its surfaces
416 if (!R_CullBox(leaf->mins, leaf->maxs))
418 renderstats.world_leafs++;
419 r_worldleafvisible[j] = true;
420 if (leaf->numleafsurfaces)
421 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
422 r_worldsurfacevisible[*mark] = true;
426 // if the user prefers to disable portal culling (testing?), simply
427 // use all on-screen leafs that are in the pvs.
428 else if (!r_useportalculling.integer)
431 // simply check if each leaf is in the Potentially Visible Set,
432 // and cull to frustum (view pyramid)
433 // similar to quake's RecursiveWorldNode but without cache misses
434 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
436 // if leaf is in current pvs and on the screen, mark its surfaces
437 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
439 renderstats.world_leafs++;
440 r_worldleafvisible[j] = true;
441 if (leaf->numleafsurfaces)
442 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
443 r_worldsurfacevisible[*mark] = true;
447 // otherwise use a recursive portal flow, culling each portal to
448 // frustum and checking if the leaf the portal leads to is in the pvs
453 mleaf_t *leafstack[8192];
454 // simple-frustum portal method:
455 // follows portals leading outward from viewleaf, does not venture
456 // offscreen or into leafs that are not visible, faster than
457 // Quake's RecursiveWorldNode and vastly better in unvised maps,
458 // often culls some surfaces that pvs alone would miss
459 // (such as a room in pvs that is hidden behind a wall, but the
460 // passage leading to the room is off-screen)
461 leafstack[0] = viewleaf;
465 renderstats.world_leafs++;
466 leaf = leafstack[--leafstackpos];
467 r_worldleafvisible[leaf - model->brush.data_leafs] = true;
468 // mark any surfaces bounding this leaf
469 if (leaf->numleafsurfaces)
470 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
471 r_worldsurfacevisible[*mark] = true;
472 // follow portals into other leafs
474 // if viewer is behind portal (portal faces outward into the scene)
475 // and the portal polygon's bounding box is on the screen
476 // and the leaf has not been visited yet
477 // and the leaf is visible in the pvs
478 // (the first two checks won't cause as many cache misses as the leaf checks)
479 for (p = leaf->portals;p;p = p->next)
481 renderstats.world_portals++;
482 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))
483 leafstack[leafstackpos++] = p->past;
489 if (r_drawportals.integer)
493 void R_Q1BSP_DrawSky(entity_render_t *ent)
495 if (ent->model == NULL)
497 R_DrawSurfaces(ent, true);
500 void R_Q1BSP_Draw(entity_render_t *ent)
502 model_t *model = ent->model;
505 R_DrawSurfaces(ent, false);
506 if (r_showcollisionbrushes.integer && model->brush.num_brushes && !r_showtrispass)
511 R_Mesh_Matrix(&ent->matrix);
512 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE);
514 GL_DepthTest(!r_showdisabledepthtest.integer);
515 qglPolygonOffset(r_showcollisionbrushes_polygonfactor.value, r_showcollisionbrushes_polygonoffset.value);
516 for (i = 0, brush = model->brush.data_brushes + model->firstmodelbrush;i < model->nummodelbrushes;i++, brush++)
517 if (brush->colbrushf && brush->colbrushf->numtriangles)
518 R_DrawCollisionBrush(brush->colbrushf);
519 for (i = 0, surface = model->data_surfaces + model->firstmodelsurface;i < model->nummodelsurfaces;i++, surface++)
520 if (surface->num_collisiontriangles)
521 R_DrawCollisionSurface(ent, surface);
522 qglPolygonOffset(0, 0);
526 typedef struct r_q1bsp_getlightinfo_s
529 vec3_t relativelightorigin;
532 unsigned char *outleafpvs;
535 unsigned char *outsurfacepvs;
541 const unsigned char *pvs;
543 r_q1bsp_getlightinfo_t;
545 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
551 mplane_t *plane = node->plane;
552 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
557 sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
559 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
562 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
563 node = node->children[1];
566 return; // ERROR: NAN bounding box!
568 node = node->children[sides - 1];
570 leaf = (mleaf_t *)node;
571 if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
573 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
574 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
575 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
576 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
577 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
578 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
579 if (info->outleafpvs)
581 int leafindex = leaf - info->model->brush.data_leafs;
582 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
584 SETPVSBIT(info->outleafpvs, leafindex);
585 info->outleaflist[info->outnumleafs++] = leafindex;
588 if (info->outsurfacepvs)
590 int leafsurfaceindex;
591 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
593 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
594 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
596 msurface_t *surface = info->model->data_surfaces + surfaceindex;
597 if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
599 int triangleindex, t;
602 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
604 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
605 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
606 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
607 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])))
609 SETPVSBIT(info->outsurfacepvs, surfaceindex);
610 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
621 void R_Q1BSP_GetLightInfo(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, vec3_t outmins, vec3_t outmaxs, int *outleaflist, unsigned char *outleafpvs, int *outnumleafspointer, int *outsurfacelist, unsigned char *outsurfacepvs, int *outnumsurfacespointer)
623 r_q1bsp_getlightinfo_t info;
624 VectorCopy(relativelightorigin, info.relativelightorigin);
625 info.lightradius = lightradius;
626 info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
627 info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
628 info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
629 info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
630 info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
631 info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
632 if (ent->model == NULL)
634 VectorCopy(info.lightmins, outmins);
635 VectorCopy(info.lightmaxs, outmaxs);
636 *outnumleafspointer = 0;
637 *outnumsurfacespointer = 0;
640 info.model = ent->model;
641 info.outleaflist = outleaflist;
642 info.outleafpvs = outleafpvs;
643 info.outnumleafs = 0;
644 info.outsurfacelist = outsurfacelist;
645 info.outsurfacepvs = outsurfacepvs;
646 info.outnumsurfaces = 0;
647 VectorCopy(info.relativelightorigin, info.outmins);
648 VectorCopy(info.relativelightorigin, info.outmaxs);
649 memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
650 memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
651 if (info.model->brush.GetPVS)
652 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
655 R_UpdateAllTextureInfo(ent);
656 if (r_shadow_compilingrtlight)
658 // use portal recursion for exact light volume culling, and exact surface checking
659 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);
661 else if (r_shadow_realtime_dlight_portalculling.integer)
663 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
664 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);
668 // use BSP recursion as lights are often small
669 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
672 // limit combined leaf box to light boundaries
673 outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
674 outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
675 outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
676 outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
677 outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
678 outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
680 *outnumleafspointer = info.outnumleafs;
681 *outnumsurfacespointer = info.outnumsurfaces;
684 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
686 model_t *model = ent->model;
688 int surfacelistindex;
689 float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
691 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
692 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
693 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
695 surface = model->data_surfaces + surfacelist[surfacelistindex];
696 texture = surface->texture;
697 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
699 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
701 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);
703 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);
704 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
707 extern float *rsurface_vertex3f;
708 extern float *rsurface_svector3f;
709 extern float *rsurface_tvector3f;
710 extern float *rsurface_normal3f;
711 extern void RSurf_SetVertexPointer(const entity_render_t *ent, const texture_t *texture, const msurface_t *surface, const vec3_t modelorg, qboolean generatenormals, qboolean generatetangents);
713 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)
715 model_t *model = ent->model;
717 int surfacelistindex;
718 float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
721 // check the box in modelspace, it was already checked in worldspace
722 if (!BoxesOverlap(ent->model->normalmins, ent->model->normalmaxs, lightmins, lightmaxs))
724 R_UpdateAllTextureInfo(ent);
725 if (model->brush.shadowmesh)
727 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
728 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
730 surface = model->data_surfaces + surfacelist[surfacelistindex];
731 texture = surface->texture->currentframe;
732 if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
734 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
736 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
738 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);
742 projectdistance = lightradius + ent->model->radius*2;
743 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
744 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
746 surface = model->data_surfaces + surfacelist[surfacelistindex];
747 // FIXME: get current skin
748 texture = surface->texture;//R_FetchAliasSkin(ent, surface->groupmesh);
749 if (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT) || !surface->num_triangles)
751 RSurf_SetVertexPointer(ent, texture, surface, modelorg, false, false);
752 // identify lit faces within the bounding box
753 R_Shadow_PrepareShadowMark(surface->groupmesh->num_triangles);
754 R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, surface->groupmesh->data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
755 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);
760 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
762 msurface_t *surface = ent->model->data_surfaces + surfacenumber;
763 texture_t *texture = surface->texture;
764 R_UpdateTextureInfo(ent, texture);
765 texture = texture->currentframe;
766 R_Shadow_RenderMode_Begin();
767 R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
768 R_Shadow_RenderMode_Lighting(false, true);
769 R_Shadow_SetupEntityLight(ent);
770 R_Shadow_RenderSurfacesLighting(ent, texture, 1, &surface);
771 R_Shadow_RenderMode_End();
774 static void R_Q1BSP_DrawLight_TransparentBatch(const entity_render_t *ent, texture_t *texture, int batchnumsurfaces, msurface_t **batchsurfacelist)
776 int batchsurfaceindex;
777 msurface_t *batchsurface;
778 vec3_t tempcenter, center;
779 for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
781 batchsurface = batchsurfacelist[batchsurfaceindex];
782 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
783 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
784 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
785 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
786 R_MeshQueue_AddTransparent(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_vieworigin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, batchsurface - ent->model->data_surfaces, r_shadow_rtlight);
790 #define RSURF_MAX_BATCHSURFACES 1024
792 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
794 model_t *model = ent->model;
797 int surfacelistindex, batchnumsurfaces;
798 msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
802 R_UpdateAllTextureInfo(ent);
803 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
807 batchnumsurfaces = 0;
808 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
810 if ((ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]]))
812 surface = model->data_surfaces + surfacelist[surfacelistindex];
813 renderstats.lights_lighttriangles += surface->num_triangles;
814 if (tex != surface->texture)
816 if (batchnumsurfaces > 0)
818 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
819 R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
821 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
822 batchnumsurfaces = 0;
824 tex = surface->texture;
825 texture = surface->texture->currentframe;
826 skip = (texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
830 if (!skip && surface->num_triangles)
832 if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
834 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
835 R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
837 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
838 batchnumsurfaces = 0;
840 batchsurfacelist[batchnumsurfaces++] = surface;
843 if (batchnumsurfaces > 0)
845 if (texture->currentmaterialflags & MATERIALFLAG_TRANSPARENT)
846 R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
848 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
849 batchnumsurfaces = 0;
851 qglEnable(GL_CULL_FACE);
855 void R_ReplaceWorldTexture (void)
860 const char *r, *newt;
861 m = r_refdef.worldmodel;
865 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
866 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
869 if(!cl.islocalgame || !cl.worldmodel)
871 Con_Print("This command works only in singleplayer\n");
878 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
880 if(t->width && !strcasecmp(t->name, r))
882 if(Mod_LoadSkinFrame(&t->skin, (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
884 Con_Printf("%s replaced with %s\n", r, newt);
889 Con_Printf("%s was not found\n", newt);
890 Mod_LoadSkinFrame(&t->skin, (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
898 void R_ListWorldTextures (void)
903 m = r_refdef.worldmodel;
905 Con_Print("Worldmodel textures :\n");
906 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
907 if(t->skin.base != r_texture_notexture)
908 Con_Printf("%s\n", t->name);
912 static void gl_surf_start(void)
916 static void gl_surf_shutdown(void)
920 static void gl_surf_newmap(void)
925 void GL_Surf_Init(void)
928 Cvar_RegisterVariable(&r_ambient);
929 Cvar_RegisterVariable(&r_drawportals);
930 Cvar_RegisterVariable(&r_lockpvs);
931 Cvar_RegisterVariable(&r_lockvisibility);
932 Cvar_RegisterVariable(&r_useportalculling);
933 Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
935 Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes"); // By [515]
936 Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map"); // By [515]
938 //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);