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", "brightens map, value is 0-128"};
29 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)"};
30 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)"};
31 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"};
32 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"};
38 Combine and scale multiple lightmaps into the 8.8 format in blocklights
41 void R_BuildLightMap (const entity_render_t *ent, msurface_t *surface)
43 int smax, tmax, i, size, size3, maps, l;
45 unsigned char *lightmap, *out, *stain;
46 model_t *model = ent->model;
48 unsigned char *templight;
50 smax = (surface->lightmapinfo->extents[0]>>4)+1;
51 tmax = (surface->lightmapinfo->extents[1]>>4)+1;
55 if (cl.buildlightmapmemorysize < size*sizeof(int[3]))
57 cl.buildlightmapmemorysize = size*sizeof(int[3]);
58 if (cl.buildlightmapmemory)
59 Mem_Free(cl.buildlightmapmemory);
60 cl.buildlightmapmemory = Mem_Alloc(cls.levelmempool, cl.buildlightmapmemorysize);
63 // these both point at the same buffer, templight is only used for final
64 // processing and can replace the intblocklights data as it goes
65 intblocklights = (int *)cl.buildlightmapmemory;
66 templight = (unsigned char *)cl.buildlightmapmemory;
68 // update cached lighting info
69 surface->cached_dlight = 0;
71 lightmap = surface->lightmapinfo->samples;
73 // set to full bright if no light data
75 if (!model->brushq1.lightdata)
77 for (i = 0;i < size3;i++)
83 memset(bl, 0, size3*sizeof(*bl));
85 // add all the lightmaps
87 for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
88 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
89 bl[i] += lightmap[i] * scale;
92 stain = surface->lightmapinfo->stainsamples;
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 (model->brushq1.lightmaprgba)
101 for (i = 0;i < size;i++)
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);
111 for (i = 0;i < size;i++)
113 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
114 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
115 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
119 R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
121 // update the surface's deluxemap if it has one
122 if (surface->deluxemaptexture != r_texture_blanknormalmap)
125 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
126 lightmap = surface->lightmapinfo->samples;
127 // clear to no normalmap
129 memset(bl, 0, size3*sizeof(*bl));
130 // add all the normalmaps
131 if (lightmap && normalmap)
133 for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
135 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
137 // add the normalmap with weighting proportional to the style's lightmap intensity
138 l = (int)(VectorLength(lightmap + i*3) * scale);
139 bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
140 bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
141 bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
147 // we simply renormalize the weighted normals to get a valid deluxemap
148 if (model->brushq1.lightmaprgba)
150 for (i = 0;i < size;i++, bl += 3)
154 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
155 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
156 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
162 for (i = 0;i < size;i++, bl += 3)
166 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
167 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
168 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
171 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
175 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
177 float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
178 msurface_t *surface, *endsurface;
179 int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
183 maxdist = radius * radius;
184 invradius = 1.0f / radius;
189 ndist = PlaneDiff(origin, node->plane);
192 node = node->children[0];
197 node = node->children[1];
201 dist2 = ndist * ndist;
202 maxdist3 = maxdist - dist2;
204 if (node->plane->type < 3)
206 VectorCopy(origin, impact);
207 impact[node->plane->type] -= ndist;
211 impact[0] = origin[0] - node->plane->normal[0] * ndist;
212 impact[1] = origin[1] - node->plane->normal[1] * ndist;
213 impact[2] = origin[2] - node->plane->normal[2] * ndist;
216 for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
218 if (surface->lightmapinfo->stainsamples)
220 smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
221 tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
223 impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
224 impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
226 s = bound(0, impacts, smax * 16) - impacts;
227 t = bound(0, impactt, tmax * 16) - impactt;
228 i = (int)(s * s + t * t + dist2);
232 // reduce calculations
233 for (s = 0, i = impacts; s < smax; s++, i -= 16)
234 sdtable[s] = i * i + dist2;
236 bl = surface->lightmapinfo->stainsamples;
241 for (t = 0;t < tmax;t++, i -= 16)
244 // make sure some part of it is visible on this line
247 maxdist2 = maxdist - td;
248 for (s = 0;s < smax;s++)
250 if (sdtable[s] < maxdist2)
252 ratio = lhrandom(0.0f, 1.0f);
253 a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
254 if (a >= (1.0f / 64.0f))
258 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
259 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
260 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
270 // force lightmap upload
272 surface->cached_dlight = true;
276 if (node->children[0]->plane)
278 if (node->children[1]->plane)
280 R_StainNode(node->children[0], model, origin, radius, fcolor);
281 node = node->children[1];
286 node = node->children[0];
290 else if (node->children[1]->plane)
292 node = node->children[1];
297 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)
301 entity_render_t *ent;
304 if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
309 fcolor[3] = ca1 * (1.0f / 64.0f);
310 fcolor[4] = cr2 - cr1;
311 fcolor[5] = cg2 - cg1;
312 fcolor[6] = cb2 - cb1;
313 fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
315 R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
317 // look for embedded bmodels
318 for (n = 0;n < cl.num_brushmodel_entities;n++)
320 ent = &cl.entities[cl.brushmodel_entities[n]].render;
322 if (model && model->name[0] == '*')
324 if (model->brush.data_nodes)
326 Matrix4x4_Transform(&ent->inversematrix, origin, org);
327 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
335 =============================================================
339 =============================================================
342 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
344 // due to the hacky nature of this function's parameters, this is never
345 // called with a batch, so numsurfaces is always 1, and the surfacelist
346 // contains only a leaf number for coloring purposes
347 const mportal_t *portal = (mportal_t *)ent;
350 float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
352 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
356 GL_CullFace(GL_NONE);
357 R_Mesh_Matrix(&identitymatrix);
359 numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
361 R_Mesh_VertexPointer(vertex3f, 0, 0);
362 R_Mesh_ColorPointer(NULL, 0, 0);
363 R_Mesh_ResetTextureState();
366 GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_view.colorscale,
367 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_view.colorscale,
368 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_view.colorscale,
370 for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
371 VectorCopy(portal->points[i].position, v);
372 R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements, 0, 0);
375 // LordHavoc: this is just a nice debugging tool, very slow
376 void R_DrawPortals(void)
381 model_t *model = r_refdef.worldmodel;
384 for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
386 if (r_viewcache.world_leafvisible[leafnum])
388 //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
389 for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
391 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
392 if (!R_CullBox(portal->mins, portal->maxs))
395 for (i = 0;i < portal->numpoints;i++)
396 VectorAdd(center, portal->points[i].position, center);
397 f = ixtable[portal->numpoints];
398 VectorScale(center, f, center);
399 R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, rsurface.rtlight);
406 void R_View_WorldVisibility(void)
411 model_t *model = r_refdef.worldmodel;
416 // if possible find the leaf the view origin is in
417 viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_view.origin) : NULL;
418 // if possible fetch the visible cluster bits
419 if (!r_lockpvs.integer && model->brush.FatPVS)
420 model->brush.FatPVS(model, r_view.origin, 2, r_viewcache.world_pvsbits, sizeof(r_viewcache.world_pvsbits));
422 if (!r_lockvisibility.integer)
424 // clear the visible surface and leaf flags arrays
425 memset(r_viewcache.world_surfacevisible, 0, model->num_surfaces);
426 memset(r_viewcache.world_leafvisible, 0, model->brush.num_leafs);
428 r_viewcache.world_novis = false;
430 // if floating around in the void (no pvs data available, and no
431 // portals available), simply use all on-screen leafs.
432 if (!viewleaf || viewleaf->clusterindex < 0)
434 // no visibility method: (used when floating around in the void)
435 // simply cull each leaf to the frustum (view pyramid)
436 // similar to quake's RecursiveWorldNode but without cache misses
437 r_viewcache.world_novis = true;
438 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
440 // if leaf is in current pvs and on the screen, mark its surfaces
441 if (!R_CullBox(leaf->mins, leaf->maxs))
443 r_refdef.stats.world_leafs++;
444 r_viewcache.world_leafvisible[j] = true;
445 if (leaf->numleafsurfaces)
446 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
447 r_viewcache.world_surfacevisible[*mark] = true;
451 // if the user prefers to disable portal culling (testing?), simply
452 // use all on-screen leafs that are in the pvs.
453 else if (!r_useportalculling.integer)
456 // simply check if each leaf is in the Potentially Visible Set,
457 // and cull to frustum (view pyramid)
458 // similar to quake's RecursiveWorldNode but without cache misses
459 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
461 // if leaf is in current pvs and on the screen, mark its surfaces
462 if (CHECKPVSBIT(r_viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
464 r_refdef.stats.world_leafs++;
465 r_viewcache.world_leafvisible[j] = true;
466 if (leaf->numleafsurfaces)
467 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
468 r_viewcache.world_surfacevisible[*mark] = true;
472 // otherwise use a recursive portal flow, culling each portal to
473 // frustum and checking if the leaf the portal leads to is in the pvs
478 mleaf_t *leafstack[8192];
479 // simple-frustum portal method:
480 // follows portals leading outward from viewleaf, does not venture
481 // offscreen or into leafs that are not visible, faster than
482 // Quake's RecursiveWorldNode and vastly better in unvised maps,
483 // often culls some surfaces that pvs alone would miss
484 // (such as a room in pvs that is hidden behind a wall, but the
485 // passage leading to the room is off-screen)
486 leafstack[0] = viewleaf;
490 leaf = leafstack[--leafstackpos];
491 if (r_viewcache.world_leafvisible[leaf - model->brush.data_leafs])
493 r_refdef.stats.world_leafs++;
494 r_viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
495 // mark any surfaces bounding this leaf
496 if (leaf->numleafsurfaces)
497 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
498 r_viewcache.world_surfacevisible[*mark] = true;
499 // follow portals into other leafs
501 // if viewer is behind portal (portal faces outward into the scene)
502 // and the portal polygon's bounding box is on the screen
503 // and the leaf has not been visited yet
504 // and the leaf is visible in the pvs
505 // (the first two checks won't cause as many cache misses as the leaf checks)
506 for (p = leaf->portals;p;p = p->next)
508 r_refdef.stats.world_portals++;
509 if (DotProduct(r_view.origin, p->plane.normal) < (p->plane.dist + 1)
510 && !r_viewcache.world_leafvisible[p->past - model->brush.data_leafs]
511 && CHECKPVSBIT(r_viewcache.world_pvsbits, p->past->clusterindex)
512 && !R_CullBox(p->mins, p->maxs)
513 && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
514 leafstack[leafstackpos++] = p->past;
521 void R_Q1BSP_DrawSky(entity_render_t *ent)
523 if (ent->model == NULL)
525 if (ent == r_refdef.worldentity)
526 R_DrawWorldSurfaces(true, true, false);
528 R_DrawModelSurfaces(ent, true, true, false);
531 void R_Q1BSP_Draw(entity_render_t *ent)
533 model_t *model = ent->model;
536 if (ent == r_refdef.worldentity)
537 R_DrawWorldSurfaces(false, true, false);
539 R_DrawModelSurfaces(ent, false, true, false);
542 void R_Q1BSP_DrawDepth(entity_render_t *ent)
544 model_t *model = ent->model;
547 if (ent == r_refdef.worldentity)
548 R_DrawWorldSurfaces(false, false, true);
550 R_DrawModelSurfaces(ent, false, false, true);
553 typedef struct r_q1bsp_getlightinfo_s
556 vec3_t relativelightorigin;
559 unsigned char *outleafpvs;
562 unsigned char *outsurfacepvs;
563 unsigned char *tempsurfacepvs;
564 unsigned char *outshadowtrispvs;
565 unsigned char *outlighttrispvs;
571 const unsigned char *pvs;
572 qboolean svbsp_active;
573 qboolean svbsp_insertoccluder;
575 r_q1bsp_getlightinfo_t;
577 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
583 mplane_t *plane = node->plane;
584 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
588 //if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rsurface.rtlight_numfrustumplanes, rsurface.rtlight_frustumplanes))
592 if (info->lightmins[plane->type] > plane->dist)
593 node = node->children[0];
594 else if (info->lightmaxs[plane->type] < plane->dist)
595 node = node->children[1];
596 else if (info->relativelightorigin[plane->type] >= plane->dist)
598 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
599 node = node->children[1];
603 R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
604 node = node->children[0];
609 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
612 // recurse front side first because the svbsp building prefers it
613 if (PlaneDist(info->relativelightorigin, plane) >= 0)
615 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
616 node = node->children[1];
620 R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
621 node = node->children[0];
625 return; // ERROR: NAN bounding box!
627 node = node->children[sides - 1];
630 if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, rsurface.rtlight_numfrustumplanes, rsurface.rtlight_frustumplanes))
632 leaf = (mleaf_t *)node;
633 if (info->svbsp_active)
637 double points[128][3];
638 for (portal = leaf->portals;portal;portal = portal->next)
640 for (i = 0;i < portal->numpoints;i++)
641 VectorCopy(portal->points[i].position, points[i]);
642 if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
646 return; // no portals of this leaf visible
650 if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
653 // inserting occluders does not alter the leaf info
654 if (!info->svbsp_insertoccluder)
656 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
657 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
658 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
659 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
660 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
661 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
662 if (info->outleafpvs)
664 int leafindex = leaf - info->model->brush.data_leafs;
665 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
667 SETPVSBIT(info->outleafpvs, leafindex);
668 info->outleaflist[info->outnumleafs++] = leafindex;
672 if (info->outsurfacepvs)
674 int leafsurfaceindex;
676 int triangleindex, t;
681 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
683 surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
684 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
686 surface = info->model->data_surfaces + surfaceindex;
687 if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs)
688 && (!info->svbsp_insertoccluder || !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)))
690 qboolean addedtris = false;
691 qboolean insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
692 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
694 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
695 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
696 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
697 if (insidebox || TriangleOverlapsBox(v[0], v[1], v[2], info->lightmins, info->lightmaxs))
699 if (info->svbsp_insertoccluder)
701 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE) && r_shadow_frontsidecasting.integer != PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
703 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
705 VectorCopy(v[0], v2[0]);
706 VectorCopy(v[1], v2[1]);
707 VectorCopy(v[2], v2[2]);
708 if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0) & 2))
714 if (info->svbsp_active)
716 VectorCopy(v[0], v2[0]);
717 VectorCopy(v[1], v2[1]);
718 VectorCopy(v[2], v2[2]);
719 if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
722 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE)
724 // if the material is double sided we
725 // can't cull by direction
726 SETPVSBIT(info->outlighttrispvs, t);
728 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
729 SETPVSBIT(info->outshadowtrispvs, t);
731 else if (r_shadow_frontsidecasting.integer)
733 // front side casting occludes backfaces,
734 // so they are completely useless as both
735 // casters and lit polygons
736 if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
738 SETPVSBIT(info->outlighttrispvs, t);
740 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
741 SETPVSBIT(info->outshadowtrispvs, t);
745 // back side casting does not occlude
746 // anything so we can't cull lit polygons
747 SETPVSBIT(info->outlighttrispvs, t);
749 if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
750 SETPVSBIT(info->outshadowtrispvs, t);
757 SETPVSBIT(info->outsurfacepvs, surfaceindex);
758 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
766 void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
771 VectorCopy(info->relativelightorigin, origin);
774 r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<18);
775 r_svbsp.nodes = Mem_Alloc(r_main_mempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
777 info->svbsp_active = true;
778 info->svbsp_insertoccluder = true;
781 SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
782 R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
783 // if that failed, retry with more nodes
784 if (r_svbsp.ranoutofnodes)
786 // an upper limit is imposed
787 if (r_svbsp.maxnodes >= 2<<22)
789 Mem_Free(r_svbsp.nodes);
790 r_svbsp.maxnodes *= 2;
791 r_svbsp.nodes = Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
796 // now clear the surfacepvs array because we need to redo it
797 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
798 info->outnumsurfaces = 0;
801 info->svbsp_active = false;
803 // we HAVE to mark the leaf the light is in as lit, because portals are
804 // irrelevant to a leaf that the light source is inside of
805 // (and they are all facing away, too)
807 mnode_t *node = info->model->brush.data_nodes;
810 node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
811 leaf = (mleaf_t *)node;
812 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
813 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
814 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
815 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
816 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
817 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
818 if (info->outleafpvs)
820 int leafindex = leaf - info->model->brush.data_leafs;
821 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
823 SETPVSBIT(info->outleafpvs, leafindex);
824 info->outleaflist[info->outnumleafs++] = leafindex;
829 info->svbsp_insertoccluder = false;
830 R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
831 if (developer.integer >= 100 && use_svbsp)
833 Con_Printf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
834 Con_Printf("occluders: %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_occluders_accepted, r_svbsp.stat_occluders_rejected, r_svbsp.stat_occluders_fragments_accepted, r_svbsp.stat_occluders_fragments_rejected);
835 Con_Printf("queries : %i accepted, %i rejected, %i fragments accepted, %i fragments rejected.\n", r_svbsp.stat_queries_accepted, r_svbsp.stat_queries_rejected, r_svbsp.stat_queries_fragments_accepted, r_svbsp.stat_queries_fragments_rejected);
839 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, unsigned char *outshadowtrispvs, unsigned char *outlighttrispvs)
841 r_q1bsp_getlightinfo_t info;
842 VectorCopy(relativelightorigin, info.relativelightorigin);
843 info.lightradius = lightradius;
844 info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
845 info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
846 info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
847 info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
848 info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
849 info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
850 if (ent->model == NULL)
852 VectorCopy(info.lightmins, outmins);
853 VectorCopy(info.lightmaxs, outmaxs);
854 *outnumleafspointer = 0;
855 *outnumsurfacespointer = 0;
858 info.model = ent->model;
859 info.outleaflist = outleaflist;
860 info.outleafpvs = outleafpvs;
861 info.outnumleafs = 0;
862 info.outsurfacelist = outsurfacelist;
863 info.outsurfacepvs = outsurfacepvs;
864 info.outshadowtrispvs = outshadowtrispvs;
865 info.outlighttrispvs = outlighttrispvs;
866 info.outnumsurfaces = 0;
867 VectorCopy(info.relativelightorigin, info.outmins);
868 VectorCopy(info.relativelightorigin, info.outmaxs);
869 memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
870 memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
871 if (info.model->brush.shadowmesh)
872 memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
874 memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
875 memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
876 if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
877 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
880 R_UpdateAllTextureInfo(ent);
882 if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer)
884 // use portal recursion for exact light volume culling, and exact surface checking
885 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, info.outshadowtrispvs, info.outlighttrispvs);
887 else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer)
889 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
890 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, info.outshadowtrispvs, info.outlighttrispvs);
894 // recurse the bsp tree, checking leafs and surfaces for visibility
895 // optionally using svbsp for exact culling of compiled lights
896 // (or if the user enables dlight svbsp culling, which is mostly for
897 // debugging not actual use)
898 R_Q1BSP_CallRecursiveGetLightInfo(&info, r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer);
901 // limit combined leaf box to light boundaries
902 outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
903 outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
904 outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
905 outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
906 outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
907 outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
909 *outnumleafspointer = info.outnumleafs;
910 *outnumsurfacespointer = info.outnumsurfaces;
913 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
915 model_t *model = ent->model;
917 int surfacelistindex;
918 float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
919 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
920 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
921 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
923 surface = model->data_surfaces + surfacelist[surfacelistindex];
924 if (surface->texture->currentframe->basematerialflags & MATERIALFLAG_NOSHADOW)
926 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, r_shadow_compilingrtlight->cullmins, r_shadow_compilingrtlight->cullmaxs, surface->mins, surface->maxs);
928 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist);
929 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false, true);
932 void R_Q1BSP_DrawShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int modelnumsurfaces, const int *modelsurfacelist, const vec3_t lightmins, const vec3_t lightmaxs)
934 model_t *model = ent->model;
936 int modelsurfacelistindex;
937 float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
938 // check the box in modelspace, it was already checked in worldspace
939 if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
941 R_UpdateAllTextureInfo(ent);
942 if (model->brush.shadowmesh)
944 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
945 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
947 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
948 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
950 R_Shadow_MarkVolumeFromBox(surface->num_firstshadowmeshtriangle, surface->num_triangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
952 R_Shadow_VolumeFromList(model->brush.shadowmesh->numverts, model->brush.shadowmesh->numtriangles, model->brush.shadowmesh->vertex3f, model->brush.shadowmesh->element3i, model->brush.shadowmesh->neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist);
956 projectdistance = lightradius + model->radius*2;
957 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
958 // identify lit faces within the bounding box
959 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
961 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
962 rsurface.texture = surface->texture->currentframe;
963 if (rsurface.texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
965 RSurf_PrepareVerticesForBatch(false, false, 1, &surface);
966 R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface.vertex3f, rsurface.modelelement3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
968 R_Shadow_VolumeFromList(model->surfmesh.num_vertices, model->surfmesh.num_triangles, rsurface.vertex3f, model->surfmesh.data_element3i, model->surfmesh.data_neighbor3i, relativelightorigin, relativelightdirection, projectdistance, numshadowmark, shadowmarklist);
972 #define BATCHSIZE 1024
974 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
976 int i, j, endsurface;
979 // note: in practice this never actually receives batches), oh well
980 R_Shadow_RenderMode_Begin();
981 R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
982 R_Shadow_RenderMode_Lighting(false, true);
983 R_Shadow_SetupEntityLight(ent);
984 for (i = 0;i < numsurfaces;i = j)
987 surface = rsurface.modelsurfaces + surfacelist[i];
988 t = surface->texture;
989 R_UpdateTextureInfo(ent, t);
990 rsurface.texture = t->currentframe;
991 endsurface = min(j + BATCHSIZE, numsurfaces);
992 for (j = i;j < endsurface;j++)
994 surface = rsurface.modelsurfaces + surfacelist[j];
995 if (t != surface->texture)
997 RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
998 R_Shadow_RenderLighting(surface->num_firstvertex, surface->num_vertices, surface->num_triangles, ent->model->surfmesh.data_element3i + surface->num_firsttriangle * 3, ent->model->surfmesh.ebo, (sizeof(int[3]) * surface->num_firsttriangle));
1001 R_Shadow_RenderMode_End();
1004 #define RSURF_MAX_BATCHSURFACES 1024
1006 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *trispvs)
1008 model_t *model = ent->model;
1009 msurface_t *surface;
1010 int i, k, l, m, mend, endsurface, batchnumsurfaces, batchnumtriangles, batchfirstvertex, batchlastvertex;
1011 qboolean usebufferobject, culltriangles;
1012 const int *element3i;
1013 msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
1014 int batchelements[BATCHSIZE*3];
1017 RSurf_ActiveModelEntity(ent, true, true);
1018 R_UpdateAllTextureInfo(ent);
1020 culltriangles = r_shadow_culltriangles.integer && !(ent->flags & RENDER_NOSELFSHADOW);
1021 element3i = rsurface.modelelement3i;
1022 // this is a double loop because non-visible surface skipping has to be
1023 // fast, and even if this is not the world model (and hence no visibility
1024 // checking) the input surface list and batch buffer are different formats
1025 // so some processing is necessary. (luckily models have few surfaces)
1026 for (i = 0;i < numsurfaces;)
1028 batchnumsurfaces = 0;
1029 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1030 if (ent == r_refdef.worldentity)
1032 for (;i < endsurface;i++)
1033 if (r_viewcache.world_surfacevisible[surfacelist[i]])
1034 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1038 for (;i < endsurface;i++)
1039 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1041 if (!batchnumsurfaces)
1043 for (k = 0;k < batchnumsurfaces;k = l)
1045 surface = batchsurfacelist[k];
1046 tex = surface->texture;
1047 rsurface.texture = tex->currentframe;
1048 if (rsurface.texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_WATER))
1050 if (rsurface.texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1052 vec3_t tempcenter, center;
1053 for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1055 surface = batchsurfacelist[l];
1056 tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1057 tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1058 tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1059 Matrix4x4_Transform(&rsurface.matrix, tempcenter, center);
1060 R_MeshQueue_AddTransparent(rsurface.texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, ent, surface - rsurface.modelsurfaces, rsurface.rtlight);
1065 // use the bufferobject if all triangles are accepted
1066 usebufferobject = true;
1067 batchnumtriangles = 0;
1068 // note: this only accepts consecutive surfaces because
1069 // non-consecutive surfaces often have extreme vertex
1070 // ranges (due to large numbers of surfaces omitted
1072 surface = batchsurfacelist[k];
1073 for (l = k;l < batchnumsurfaces && surface == batchsurfacelist[l] && tex == surface->texture;l++, surface++)
1075 RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
1076 for (m = surface->num_firsttriangle, mend = m + surface->num_triangles;m < mend;m++)
1082 if (!CHECKPVSBIT(trispvs, m))
1084 usebufferobject = false;
1090 if (r_shadow_frontsidecasting.integer && !PointInfrontOfTriangle(rsurface.entitylightorigin, rsurface.vertex3f + element3i[m*3+0]*3, rsurface.vertex3f + element3i[m*3+1]*3, rsurface.vertex3f + element3i[m*3+2]*3))
1092 usebufferobject = false;
1097 batchelements[batchnumtriangles*3+0] = element3i[m*3+0];
1098 batchelements[batchnumtriangles*3+1] = element3i[m*3+1];
1099 batchelements[batchnumtriangles*3+2] = element3i[m*3+2];
1100 batchnumtriangles++;
1101 r_refdef.stats.lights_lighttriangles++;
1102 if (batchnumtriangles >= BATCHSIZE)
1104 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1105 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
1106 batchnumtriangles = 0;
1107 usebufferobject = false;
1110 r_refdef.stats.lights_lighttriangles += batchsurfacelist[l]->num_triangles;
1112 if (batchnumtriangles > 0)
1114 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1115 if (usebufferobject)
1116 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, ent->model->surfmesh.ebo, sizeof(int[3]) * batchsurfacelist[k]->num_firsttriangle);
1118 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
1124 // skip ahead to the next texture
1125 for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1133 void R_ReplaceWorldTexture (void)
1138 const char *r, *newt;
1139 skinframe_t *skinframe;
1140 m = r_refdef.worldmodel;
1144 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1145 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1148 if(!cl.islocalgame || !cl.worldmodel)
1150 Con_Print("This command works only in singleplayer\n");
1157 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1159 if(t->width && !strcasecmp(t->name, r))
1161 if ((skinframe = R_SkinFrame_LoadExternal((char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, true)))
1163 t->skinframes[0] = skinframe;
1164 Con_Printf("%s replaced with %s\n", r, newt);
1169 Con_Printf("%s was not found\n", newt);
1177 void R_ListWorldTextures (void)
1182 m = r_refdef.worldmodel;
1184 Con_Print("Worldmodel textures :\n");
1185 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1186 if (t->numskinframes)
1187 Con_Printf("%s\n", t->name);
1191 static void gl_surf_start(void)
1195 static void gl_surf_shutdown(void)
1199 static void gl_surf_newmap(void)
1204 void GL_Surf_Init(void)
1207 Cvar_RegisterVariable(&r_ambient);
1208 Cvar_RegisterVariable(&r_lockpvs);
1209 Cvar_RegisterVariable(&r_lockvisibility);
1210 Cvar_RegisterVariable(&r_useportalculling);
1211 Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1213 Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");
1214 Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");
1216 //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);