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];
43 // if true, the view is currently in a leaf without pvs data
44 qboolean r_worldnovis;
50 Combine and scale multiple lightmaps into the 8.8 format in blocklights
53 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
55 int smax, tmax, i, size, size3, maps, l;
57 unsigned char *lightmap, *out, *stain;
58 model_t *model = ent->model;
59 static int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
60 static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
62 // update cached lighting info
63 surface->cached_dlight = 0;
65 smax = (surface->lightmapinfo->extents[0]>>4)+1;
66 tmax = (surface->lightmapinfo->extents[1]>>4)+1;
69 lightmap = surface->lightmapinfo->samples;
71 // set to full bright if no light data
73 if (!model->brushq1.lightdata)
75 for (i = 0;i < size3;i++)
81 memset(bl, 0, size3*sizeof(*bl));
83 // add all the lightmaps
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;
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 (model->brushq1.lightmaprgba)
99 for (i = 0;i < size;i++)
101 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
102 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
103 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
109 for (i = 0;i < size;i++)
111 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
112 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
113 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
117 R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
119 // update the surface's deluxemap if it has one
120 if (surface->deluxemaptexture != r_texture_blanknormalmap)
123 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
124 lightmap = surface->lightmapinfo->samples;
125 // clear to no normalmap
127 memset(bl, 0, size3*sizeof(*bl));
128 // add all the normalmaps
129 if (lightmap && normalmap)
131 for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
133 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
135 // add the normalmap with weighting proportional to the style's lightmap intensity
136 l = (int)(VectorLength(lightmap + i*3) * scale);
137 bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
138 bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
139 bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
145 // we simply renormalize the weighted normals to get a valid deluxemap
146 if (model->brushq1.lightmaprgba)
148 for (i = 0;i < size;i++, bl += 3)
152 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
153 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
154 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
160 for (i = 0;i < size;i++, bl += 3)
164 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
165 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
166 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
169 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
173 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
175 float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
176 msurface_t *surface, *endsurface;
177 int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
181 maxdist = radius * radius;
182 invradius = 1.0f / radius;
187 ndist = PlaneDiff(origin, node->plane);
190 node = node->children[0];
195 node = node->children[1];
199 dist2 = ndist * ndist;
200 maxdist3 = maxdist - dist2;
202 if (node->plane->type < 3)
204 VectorCopy(origin, impact);
205 impact[node->plane->type] -= ndist;
209 impact[0] = origin[0] - node->plane->normal[0] * ndist;
210 impact[1] = origin[1] - node->plane->normal[1] * ndist;
211 impact[2] = origin[2] - node->plane->normal[2] * ndist;
214 for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
216 if (surface->lightmapinfo->stainsamples)
218 smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
219 tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
221 impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
222 impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
224 s = bound(0, impacts, smax * 16) - impacts;
225 t = bound(0, impactt, tmax * 16) - impactt;
226 i = (int)(s * s + t * t + dist2);
230 // reduce calculations
231 for (s = 0, i = impacts; s < smax; s++, i -= 16)
232 sdtable[s] = i * i + dist2;
234 bl = surface->lightmapinfo->stainsamples;
239 for (t = 0;t < tmax;t++, i -= 16)
242 // make sure some part of it is visible on this line
245 maxdist2 = maxdist - td;
246 for (s = 0;s < smax;s++)
248 if (sdtable[s] < maxdist2)
250 ratio = lhrandom(0.0f, 1.0f);
251 a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
252 if (a >= (1.0f / 64.0f))
256 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
257 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
258 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
268 // force lightmap upload
270 surface->cached_dlight = true;
274 if (node->children[0]->plane)
276 if (node->children[1]->plane)
278 R_StainNode(node->children[0], model, origin, radius, fcolor);
279 node = node->children[1];
284 node = node->children[0];
288 else if (node->children[1]->plane)
290 node = node->children[1];
295 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)
299 entity_render_t *ent;
302 if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
307 fcolor[3] = ca1 * (1.0f / 64.0f);
308 fcolor[4] = cr2 - cr1;
309 fcolor[5] = cg2 - cg1;
310 fcolor[6] = cb2 - cb1;
311 fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
313 R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
315 // look for embedded bmodels
316 for (n = 0;n < cl.num_brushmodel_entities;n++)
318 ent = &cl.entities[cl.brushmodel_entities[n]].render;
320 if (model && model->name[0] == '*')
322 if (model->brush.data_nodes)
324 Matrix4x4_Transform(&ent->inversematrix, origin, org);
325 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
333 =============================================================
337 =============================================================
340 static void R_DrawPortal_Callback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
342 const mportal_t *portal = (mportal_t *)ent;
345 float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
346 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
349 qglDisable(GL_CULL_FACE);
350 R_Mesh_Matrix(&identitymatrix);
352 numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
354 R_Mesh_VertexPointer(vertex3f);
355 R_Mesh_ColorPointer(NULL);
356 R_Mesh_ResetTextureState();
359 GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f),
360 ((i & 0x0038) >> 3) * (1.0f / 7.0f),
361 ((i & 0x01C0) >> 6) * (1.0f / 7.0f),
363 for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
364 VectorCopy(portal->points[i].position, v);
365 R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements);
366 qglEnable(GL_CULL_FACE);
369 // LordHavoc: this is just a nice debugging tool, very slow
370 static void R_DrawPortals(void)
375 model_t *model = r_refdef.worldmodel;
378 for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
380 if (r_worldleafvisible[leafnum])
382 //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
383 for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
385 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
386 if (!R_CullBox(portal->mins, portal->maxs))
389 for (i = 0;i < portal->numpoints;i++)
390 VectorAdd(center, portal->points[i].position, center);
391 f = ixtable[portal->numpoints];
392 VectorScale(center, f, center);
393 R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
400 void R_WorldVisibility(void)
405 model_t *model = r_refdef.worldmodel;
410 // if possible find the leaf the view origin is in
411 viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_vieworigin) : NULL;
412 // if possible fetch the visible cluster bits
413 if (!r_lockpvs.integer && model->brush.FatPVS)
414 model->brush.FatPVS(model, r_vieworigin, 2, r_pvsbits, sizeof(r_pvsbits));
416 if (!r_lockvisibility.integer)
418 // clear the visible surface and leaf flags arrays
419 memset(r_worldsurfacevisible, 0, model->num_surfaces);
420 memset(r_worldleafvisible, 0, model->brush.num_leafs);
422 r_worldnovis = false;
424 // if floating around in the void (no pvs data available, and no
425 // portals available), simply use all on-screen leafs.
426 if (!viewleaf || viewleaf->clusterindex < 0)
428 // no visibility method: (used when floating around in the void)
429 // simply cull each leaf to the frustum (view pyramid)
430 // similar to quake's RecursiveWorldNode but without cache misses
432 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
434 // if leaf is in current pvs and on the screen, mark its surfaces
435 if (!R_CullBox(leaf->mins, leaf->maxs))
437 renderstats.world_leafs++;
438 r_worldleafvisible[j] = true;
439 if (leaf->numleafsurfaces)
440 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
441 r_worldsurfacevisible[*mark] = true;
445 // if the user prefers to disable portal culling (testing?), simply
446 // use all on-screen leafs that are in the pvs.
447 else if (!r_useportalculling.integer)
450 // simply check if each leaf is in the Potentially Visible Set,
451 // and cull to frustum (view pyramid)
452 // similar to quake's RecursiveWorldNode but without cache misses
453 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
455 // if leaf is in current pvs and on the screen, mark its surfaces
456 if (CHECKPVSBIT(r_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
458 renderstats.world_leafs++;
459 r_worldleafvisible[j] = true;
460 if (leaf->numleafsurfaces)
461 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
462 r_worldsurfacevisible[*mark] = true;
466 // otherwise use a recursive portal flow, culling each portal to
467 // frustum and checking if the leaf the portal leads to is in the pvs
472 mleaf_t *leafstack[8192];
473 // simple-frustum portal method:
474 // follows portals leading outward from viewleaf, does not venture
475 // offscreen or into leafs that are not visible, faster than
476 // Quake's RecursiveWorldNode and vastly better in unvised maps,
477 // often culls some surfaces that pvs alone would miss
478 // (such as a room in pvs that is hidden behind a wall, but the
479 // passage leading to the room is off-screen)
480 leafstack[0] = viewleaf;
484 renderstats.world_leafs++;
485 leaf = leafstack[--leafstackpos];
486 r_worldleafvisible[leaf - model->brush.data_leafs] = true;
487 // mark any surfaces bounding this leaf
488 if (leaf->numleafsurfaces)
489 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
490 r_worldsurfacevisible[*mark] = true;
491 // follow portals into other leafs
493 // if viewer is behind portal (portal faces outward into the scene)
494 // and the portal polygon's bounding box is on the screen
495 // and the leaf has not been visited yet
496 // and the leaf is visible in the pvs
497 // (the first two checks won't cause as many cache misses as the leaf checks)
498 for (p = leaf->portals;p;p = p->next)
500 renderstats.world_portals++;
501 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))
502 leafstack[leafstackpos++] = p->past;
508 if (r_drawportals.integer)
512 void R_Q1BSP_DrawSky(entity_render_t *ent)
514 if (ent->model == NULL)
516 R_DrawSurfaces(ent, true);
519 void R_Q1BSP_Draw(entity_render_t *ent)
521 model_t *model = ent->model;
524 R_DrawSurfaces(ent, false);
527 typedef struct r_q1bsp_getlightinfo_s
530 vec3_t relativelightorigin;
533 unsigned char *outleafpvs;
536 unsigned char *outsurfacepvs;
542 const unsigned char *pvs;
544 r_q1bsp_getlightinfo_t;
546 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
552 mplane_t *plane = node->plane;
553 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
558 sides = ((info->lightmaxs[plane->type] >= plane->dist) | ((info->lightmins[plane->type] < plane->dist) << 1));
560 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
563 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
564 node = node->children[1];
567 return; // ERROR: NAN bounding box!
569 node = node->children[sides - 1];
571 leaf = (mleaf_t *)node;
572 if (info->pvs == NULL || CHECKPVSBIT(info->pvs, leaf->clusterindex))
574 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
575 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
576 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
577 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
578 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
579 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
580 if (info->outleafpvs)
582 int leafindex = leaf - info->model->brush.data_leafs;
583 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
585 SETPVSBIT(info->outleafpvs, leafindex);
586 info->outleaflist[info->outnumleafs++] = leafindex;
589 if (info->outsurfacepvs)
591 int leafsurfaceindex;
592 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
594 int surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
595 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
597 msurface_t *surface = info->model->data_surfaces + surfaceindex;
598 if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs))
600 int triangleindex, t;
603 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
605 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
606 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
607 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
608 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])))
610 SETPVSBIT(info->outsurfacepvs, surfaceindex);
611 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
622 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)
624 r_q1bsp_getlightinfo_t info;
625 VectorCopy(relativelightorigin, info.relativelightorigin);
626 info.lightradius = lightradius;
627 info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
628 info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
629 info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
630 info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
631 info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
632 info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
633 if (ent->model == NULL)
635 VectorCopy(info.lightmins, outmins);
636 VectorCopy(info.lightmaxs, outmaxs);
637 *outnumleafspointer = 0;
638 *outnumsurfacespointer = 0;
641 info.model = ent->model;
642 info.outleaflist = outleaflist;
643 info.outleafpvs = outleafpvs;
644 info.outnumleafs = 0;
645 info.outsurfacelist = outsurfacelist;
646 info.outsurfacepvs = outsurfacepvs;
647 info.outnumsurfaces = 0;
648 VectorCopy(info.relativelightorigin, info.outmins);
649 VectorCopy(info.relativelightorigin, info.outmaxs);
650 memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
651 memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
652 if (info.model->brush.GetPVS)
653 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
656 R_UpdateAllTextureInfo(ent);
657 if (r_shadow_compilingrtlight)
659 // use portal recursion for exact light volume culling, and exact surface checking
660 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);
662 else if (r_shadow_realtime_dlight_portalculling.integer)
664 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
665 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);
669 // use BSP recursion as lights are often small
670 R_Q1BSP_RecursiveGetLightInfo(&info, info.model->brush.data_nodes);
673 // limit combined leaf box to light boundaries
674 outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
675 outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
676 outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
677 outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
678 outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
679 outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
681 *outnumleafspointer = info.outnumleafs;
682 *outnumsurfacespointer = info.outnumsurfaces;
685 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int numsurfaces, const int *surfacelist)
687 model_t *model = ent->model;
689 int surfacelistindex;
690 float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
692 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
693 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
694 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
696 surface = model->data_surfaces + surfacelist[surfacelistindex];
697 texture = surface->texture;
698 if ((texture->basematerialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
700 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
702 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);
704 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);
705 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false);
708 void R_Q1BSP_DrawShadowVolume_Batch(entity_render_t *ent, texture_t *texture, const vec3_t modelorg, const vec3_t relativelightorigin, const vec3_t lightmins, const vec3_t lightmaxs, int texturenumsurfaces, msurface_t **texturesurfacelist)
710 int texturesurfaceindex;
711 RSurf_PrepareVerticesForBatch(ent, texture, modelorg, false, false, texturenumsurfaces, texturesurfacelist);
712 for (texturesurfaceindex = 0;texturesurfaceindex < texturenumsurfaces;texturesurfaceindex++)
714 msurface_t *surface = texturesurfacelist[texturesurfaceindex];
715 R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, rsurface_model->surfmesh.data_element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
719 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
721 model_t *model = ent->model;
723 int modelsurfacelistindex;
725 float projectdistance = lightradius + model->radius*2 + r_shadow_projectdistance.value;
727 texture_t *t = NULL, *texture = NULL;
728 const int maxsurfacelist = 1024;
729 int numsurfacelist = 0;
730 msurface_t *surfacelist[1024];
731 // check the box in modelspace, it was already checked in worldspace
732 if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
734 R_UpdateAllTextureInfo(ent);
735 if (model->brush.shadowmesh)
737 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
738 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
740 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
741 texture = surface->texture->currentframe;
742 if ((texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) != MATERIALFLAG_WALL)
744 if ((texture->textureflags & (Q3TEXTUREFLAG_TWOSIDED | Q3TEXTUREFLAG_AUTOSPRITE | Q3TEXTUREFLAG_AUTOSPRITE2)) || (ent->flags & RENDER_NOCULLFACE))
746 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, lightmins, lightmaxs, surface->mins, surface->maxs);
748 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);
752 projectdistance = lightradius + model->radius*2;
753 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
754 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
755 // identify lit faces within the bounding box
756 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
758 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
759 if (t != surface->texture || numsurfacelist >= maxsurfacelist)
763 R_Q1BSP_DrawShadowVolume_Batch(ent, texture, modelorg, relativelightorigin, lightmins, lightmaxs, numsurfacelist, surfacelist);
766 t = surface->texture;
767 texture = t->currentframe;
768 f = (texture->currentmaterialflags & (MATERIALFLAG_NODRAW | MATERIALFLAG_TRANSPARENT | MATERIALFLAG_WALL)) == MATERIALFLAG_WALL;
770 if (f && surface->num_triangles)
771 surfacelist[numsurfacelist++] = surface;
774 R_Q1BSP_DrawShadowVolume_Batch(ent, texture, modelorg, relativelightorigin, lightmins, lightmaxs, numsurfacelist, surfacelist);
775 R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface_vertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, projectdistance, numshadowmark, shadowmarklist);
779 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, int surfacenumber, const rtlight_t *rtlight)
781 msurface_t *surface = ent->model->data_surfaces + surfacenumber;
782 texture_t *texture = surface->texture;
783 R_UpdateTextureInfo(ent, texture);
784 texture = texture->currentframe;
785 R_Shadow_RenderMode_Begin();
786 R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
787 R_Shadow_RenderMode_Lighting(false, true);
788 R_Shadow_SetupEntityLight(ent);
789 R_Shadow_RenderSurfacesLighting(ent, texture, 1, &surface);
790 R_Shadow_RenderMode_End();
793 static void R_Q1BSP_DrawLight_TransparentBatch(const entity_render_t *ent, texture_t *texture, int batchnumsurfaces, msurface_t **batchsurfacelist)
795 int batchsurfaceindex;
796 model_t *model = ent->model;
797 msurface_t *batchsurface;
798 vec3_t tempcenter, center;
799 for (batchsurfaceindex = 0;batchsurfaceindex < batchnumsurfaces;batchsurfaceindex++)
801 batchsurface = batchsurfacelist[batchsurfaceindex];
802 tempcenter[0] = (batchsurface->mins[0] + batchsurface->maxs[0]) * 0.5f;
803 tempcenter[1] = (batchsurface->mins[1] + batchsurface->maxs[1]) * 0.5f;
804 tempcenter[2] = (batchsurface->mins[2] + batchsurface->maxs[2]) * 0.5f;
805 Matrix4x4_Transform(&ent->matrix, tempcenter, center);
806 R_MeshQueue_AddTransparent(texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_vieworigin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, batchsurface - model->data_surfaces, r_shadow_rtlight);
810 #define RSURF_MAX_BATCHSURFACES 1024
812 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist)
814 model_t *model = ent->model;
817 int surfacelistindex, batchnumsurfaces;
818 msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
822 R_UpdateAllTextureInfo(ent);
823 Matrix4x4_Transform(&ent->inversematrix, r_vieworigin, modelorg);
827 batchnumsurfaces = 0;
828 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
830 if ((ent == r_refdef.worldentity && !r_worldsurfacevisible[surfacelist[surfacelistindex]]))
832 surface = model->data_surfaces + surfacelist[surfacelistindex];
833 renderstats.lights_lighttriangles += surface->num_triangles;
834 if (tex != surface->texture)
836 if (batchnumsurfaces > 0)
838 if (texture->currentmaterialflags & MATERIALFLAG_BLENDED)
839 R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
841 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
842 batchnumsurfaces = 0;
844 tex = surface->texture;
845 texture = surface->texture->currentframe;
846 skip = (texture->currentmaterialflags & MATERIALFLAG_SKY) != 0;
850 if (!skip && surface->num_triangles)
852 if (batchnumsurfaces == RSURF_MAX_BATCHSURFACES)
854 if (texture->currentmaterialflags & MATERIALFLAG_BLENDED)
855 R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
857 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
858 batchnumsurfaces = 0;
860 batchsurfacelist[batchnumsurfaces++] = surface;
863 if (batchnumsurfaces > 0)
865 if (texture->currentmaterialflags & MATERIALFLAG_BLENDED)
866 R_Q1BSP_DrawLight_TransparentBatch(ent, texture, batchnumsurfaces, batchsurfacelist);
868 R_Shadow_RenderSurfacesLighting(ent, texture, batchnumsurfaces, batchsurfacelist);
869 batchnumsurfaces = 0;
871 qglEnable(GL_CULL_FACE);
875 void R_ReplaceWorldTexture (void)
880 const char *r, *newt;
881 m = r_refdef.worldmodel;
885 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
886 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
889 if(!cl.islocalgame || !cl.worldmodel)
891 Con_Print("This command works only in singleplayer\n");
898 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
900 if(t->width && !strcasecmp(t->name, r))
902 if(Mod_LoadSkinFrame(&t->skin, (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
904 Con_Printf("%s replaced with %s\n", r, newt);
909 Con_Printf("%s was not found\n", newt);
910 Mod_LoadSkinFrame(&t->skin, (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
918 void R_ListWorldTextures (void)
923 m = r_refdef.worldmodel;
925 Con_Print("Worldmodel textures :\n");
926 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
927 if(t->skin.base != r_texture_notexture)
928 Con_Printf("%s\n", t->name);
932 static void gl_surf_start(void)
936 static void gl_surf_shutdown(void)
940 static void gl_surf_newmap(void)
945 void GL_Surf_Init(void)
948 Cvar_RegisterVariable(&r_ambient);
949 Cvar_RegisterVariable(&r_drawportals);
950 Cvar_RegisterVariable(&r_lockpvs);
951 Cvar_RegisterVariable(&r_lockvisibility);
952 Cvar_RegisterVariable(&r_useportalculling);
953 Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
955 Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes"); // By [515]
956 Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map"); // By [515]
958 //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);