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_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;
47 static int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
48 static unsigned char templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
50 // update cached lighting info
51 surface->cached_dlight = 0;
53 smax = (surface->lightmapinfo->extents[0]>>4)+1;
54 tmax = (surface->lightmapinfo->extents[1]>>4)+1;
57 lightmap = surface->lightmapinfo->samples;
59 // set to full bright if no light data
61 if (!model->brushq1.lightdata)
63 for (i = 0;i < size3;i++)
69 memset(bl, 0, size3*sizeof(*bl));
71 // add all the lightmaps
73 for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3)
74 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size3;i++)
75 bl[i] += lightmap[i] * scale;
78 stain = surface->lightmapinfo->stainsamples;
81 // the >> 16 shift adjusts down 8 bits to account for the stainmap
82 // scaling, and remaps the 0-65536 (2x overbright) to 0-256, it will
83 // be doubled during rendering to achieve 2x overbright
84 // (0 = 0.0, 128 = 1.0, 256 = 2.0)
85 if (model->brushq1.lightmaprgba)
87 for (i = 0;i < size;i++)
89 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
90 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
91 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
97 for (i = 0;i < size;i++)
99 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
100 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
101 l = (*bl++ * *stain++) >> 16;*out++ = min(l, 255);
105 R_UpdateTexture(surface->lightmaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
107 // update the surface's deluxemap if it has one
108 if (surface->deluxemaptexture != r_texture_blanknormalmap)
111 unsigned char *normalmap = surface->lightmapinfo->nmapsamples;
112 lightmap = surface->lightmapinfo->samples;
113 // clear to no normalmap
115 memset(bl, 0, size3*sizeof(*bl));
116 // add all the normalmaps
117 if (lightmap && normalmap)
119 for (maps = 0;maps < MAXLIGHTMAPS && surface->lightmapinfo->styles[maps] != 255;maps++, lightmap += size3, normalmap += size3)
121 for (scale = r_refdef.lightstylevalue[surface->lightmapinfo->styles[maps]], i = 0;i < size;i++)
123 // add the normalmap with weighting proportional to the style's lightmap intensity
124 l = (int)(VectorLength(lightmap + i*3) * scale);
125 bl[i*3+0] += ((int)normalmap[i*3+0] - 128) * l;
126 bl[i*3+1] += ((int)normalmap[i*3+1] - 128) * l;
127 bl[i*3+2] += ((int)normalmap[i*3+2] - 128) * l;
133 // we simply renormalize the weighted normals to get a valid deluxemap
134 if (model->brushq1.lightmaprgba)
136 for (i = 0;i < size;i++, bl += 3)
140 l = (int)(n[0] * 128 + 128);*out++ = bound(0, l, 255);
141 l = (int)(n[1] * 128 + 128);*out++ = bound(0, l, 255);
142 l = (int)(n[2] * 128 + 128);*out++ = bound(0, l, 255);
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);
157 R_UpdateTexture(surface->deluxemaptexture, templight, surface->lightmapinfo->lightmaporigin[0], surface->lightmapinfo->lightmaporigin[1], smax, tmax);
161 void R_StainNode (mnode_t *node, model_t *model, const vec3_t origin, float radius, const float fcolor[8])
163 float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
164 msurface_t *surface, *endsurface;
165 int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
169 maxdist = radius * radius;
170 invradius = 1.0f / radius;
175 ndist = PlaneDiff(origin, node->plane);
178 node = node->children[0];
183 node = node->children[1];
187 dist2 = ndist * ndist;
188 maxdist3 = maxdist - dist2;
190 if (node->plane->type < 3)
192 VectorCopy(origin, impact);
193 impact[node->plane->type] -= ndist;
197 impact[0] = origin[0] - node->plane->normal[0] * ndist;
198 impact[1] = origin[1] - node->plane->normal[1] * ndist;
199 impact[2] = origin[2] - node->plane->normal[2] * ndist;
202 for (surface = model->data_surfaces + node->firstsurface, endsurface = surface + node->numsurfaces;surface < endsurface;surface++)
204 if (surface->lightmapinfo->stainsamples)
206 smax = (surface->lightmapinfo->extents[0] >> 4) + 1;
207 tmax = (surface->lightmapinfo->extents[1] >> 4) + 1;
209 impacts = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[0]) + surface->lightmapinfo->texinfo->vecs[0][3] - surface->lightmapinfo->texturemins[0]);
210 impactt = (int)(DotProduct (impact, surface->lightmapinfo->texinfo->vecs[1]) + surface->lightmapinfo->texinfo->vecs[1][3] - surface->lightmapinfo->texturemins[1]);
212 s = bound(0, impacts, smax * 16) - impacts;
213 t = bound(0, impactt, tmax * 16) - impactt;
214 i = (int)(s * s + t * t + dist2);
218 // reduce calculations
219 for (s = 0, i = impacts; s < smax; s++, i -= 16)
220 sdtable[s] = i * i + dist2;
222 bl = surface->lightmapinfo->stainsamples;
227 for (t = 0;t < tmax;t++, i -= 16)
230 // make sure some part of it is visible on this line
233 maxdist2 = maxdist - td;
234 for (s = 0;s < smax;s++)
236 if (sdtable[s] < maxdist2)
238 ratio = lhrandom(0.0f, 1.0f);
239 a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
240 if (a >= (1.0f / 64.0f))
244 bl[0] = (unsigned char) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
245 bl[1] = (unsigned char) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
246 bl[2] = (unsigned char) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
256 // force lightmap upload
258 surface->cached_dlight = true;
262 if (node->children[0]->plane)
264 if (node->children[1]->plane)
266 R_StainNode(node->children[0], model, origin, radius, fcolor);
267 node = node->children[1];
272 node = node->children[0];
276 else if (node->children[1]->plane)
278 node = node->children[1];
283 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)
287 entity_render_t *ent;
290 if (r_refdef.worldmodel == NULL || !r_refdef.worldmodel->brush.data_nodes || !r_refdef.worldmodel->brushq1.lightdata)
295 fcolor[3] = ca1 * (1.0f / 64.0f);
296 fcolor[4] = cr2 - cr1;
297 fcolor[5] = cg2 - cg1;
298 fcolor[6] = cb2 - cb1;
299 fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
301 R_StainNode(r_refdef.worldmodel->brush.data_nodes + r_refdef.worldmodel->brushq1.hulls[0].firstclipnode, r_refdef.worldmodel, origin, radius, fcolor);
303 // look for embedded bmodels
304 for (n = 0;n < cl.num_brushmodel_entities;n++)
306 ent = &cl.entities[cl.brushmodel_entities[n]].render;
308 if (model && model->name[0] == '*')
310 if (model->brush.data_nodes)
312 Matrix4x4_Transform(&ent->inversematrix, origin, org);
313 R_StainNode(model->brush.data_nodes + model->brushq1.hulls[0].firstclipnode, model, org, radius, fcolor);
321 =============================================================
325 =============================================================
328 static void R_DrawPortal_Callback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
330 // due to the hacky nature of this function's parameters, this is never
331 // called with a batch, so numsurfaces is always 1, and the surfacelist
332 // contains only a leaf number for coloring purposes
333 const mportal_t *portal = (mportal_t *)ent;
336 float vertex3f[POLYGONELEMENTS_MAXPOINTS*3];
338 GL_BlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
341 GL_CullFace(GL_NONE);
342 R_Mesh_Matrix(&identitymatrix);
344 numpoints = min(portal->numpoints, POLYGONELEMENTS_MAXPOINTS);
346 R_Mesh_VertexPointer(vertex3f, 0, 0);
347 R_Mesh_ColorPointer(NULL, 0, 0);
348 R_Mesh_ResetTextureState();
351 GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_view.colorscale,
352 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_view.colorscale,
353 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_view.colorscale,
355 for (i = 0, v = vertex3f;i < numpoints;i++, v += 3)
356 VectorCopy(portal->points[i].position, v);
357 R_Mesh_Draw(0, numpoints, numpoints - 2, polygonelements, 0, 0);
360 // LordHavoc: this is just a nice debugging tool, very slow
361 void R_DrawPortals(void)
366 model_t *model = r_refdef.worldmodel;
369 for (leafnum = 0;leafnum < r_refdef.worldmodel->brush.num_leafs;leafnum++)
371 if (r_viewcache.world_leafvisible[leafnum])
373 //for (portalnum = 0, portal = model->brush.data_portals;portalnum < model->brush.num_portals;portalnum++, portal++)
374 for (portal = r_refdef.worldmodel->brush.data_leafs[leafnum].portals;portal;portal = portal->next)
376 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
377 if (!R_CullBox(portal->mins, portal->maxs))
380 for (i = 0;i < portal->numpoints;i++)
381 VectorAdd(center, portal->points[i].position, center);
382 f = ixtable[portal->numpoints];
383 VectorScale(center, f, center);
384 R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, (entity_render_t *)portal, leafnum, r_shadow_rtlight);
391 void R_View_WorldVisibility(void)
396 model_t *model = r_refdef.worldmodel;
401 // if possible find the leaf the view origin is in
402 viewleaf = model->brush.PointInLeaf ? model->brush.PointInLeaf(model, r_view.origin) : NULL;
403 // if possible fetch the visible cluster bits
404 if (!r_lockpvs.integer && model->brush.FatPVS)
405 model->brush.FatPVS(model, r_view.origin, 2, r_viewcache.world_pvsbits, sizeof(r_viewcache.world_pvsbits));
407 if (!r_lockvisibility.integer)
409 // clear the visible surface and leaf flags arrays
410 memset(r_viewcache.world_surfacevisible, 0, model->num_surfaces);
411 memset(r_viewcache.world_leafvisible, 0, model->brush.num_leafs);
413 r_viewcache.world_novis = false;
415 // if floating around in the void (no pvs data available, and no
416 // portals available), simply use all on-screen leafs.
417 if (!viewleaf || viewleaf->clusterindex < 0)
419 // no visibility method: (used when floating around in the void)
420 // simply cull each leaf to the frustum (view pyramid)
421 // similar to quake's RecursiveWorldNode but without cache misses
422 r_viewcache.world_novis = true;
423 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
425 // if leaf is in current pvs and on the screen, mark its surfaces
426 if (!R_CullBox(leaf->mins, leaf->maxs))
428 r_refdef.stats.world_leafs++;
429 r_viewcache.world_leafvisible[j] = true;
430 if (leaf->numleafsurfaces)
431 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
432 r_viewcache.world_surfacevisible[*mark] = true;
436 // if the user prefers to disable portal culling (testing?), simply
437 // use all on-screen leafs that are in the pvs.
438 else if (!r_useportalculling.integer)
441 // simply check if each leaf is in the Potentially Visible Set,
442 // and cull to frustum (view pyramid)
443 // similar to quake's RecursiveWorldNode but without cache misses
444 for (j = 0, leaf = model->brush.data_leafs;j < model->brush.num_leafs;j++, leaf++)
446 // if leaf is in current pvs and on the screen, mark its surfaces
447 if (CHECKPVSBIT(r_viewcache.world_pvsbits, leaf->clusterindex) && !R_CullBox(leaf->mins, leaf->maxs))
449 r_refdef.stats.world_leafs++;
450 r_viewcache.world_leafvisible[j] = true;
451 if (leaf->numleafsurfaces)
452 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
453 r_viewcache.world_surfacevisible[*mark] = true;
457 // otherwise use a recursive portal flow, culling each portal to
458 // frustum and checking if the leaf the portal leads to is in the pvs
463 mleaf_t *leafstack[8192];
464 // simple-frustum portal method:
465 // follows portals leading outward from viewleaf, does not venture
466 // offscreen or into leafs that are not visible, faster than
467 // Quake's RecursiveWorldNode and vastly better in unvised maps,
468 // often culls some surfaces that pvs alone would miss
469 // (such as a room in pvs that is hidden behind a wall, but the
470 // passage leading to the room is off-screen)
471 leafstack[0] = viewleaf;
475 leaf = leafstack[--leafstackpos];
476 if (r_viewcache.world_leafvisible[leaf - model->brush.data_leafs])
478 r_refdef.stats.world_leafs++;
479 r_viewcache.world_leafvisible[leaf - model->brush.data_leafs] = true;
480 // mark any surfaces bounding this leaf
481 if (leaf->numleafsurfaces)
482 for (i = 0, mark = leaf->firstleafsurface;i < leaf->numleafsurfaces;i++, mark++)
483 r_viewcache.world_surfacevisible[*mark] = true;
484 // follow portals into other leafs
486 // if viewer is behind portal (portal faces outward into the scene)
487 // and the portal polygon's bounding box is on the screen
488 // and the leaf has not been visited yet
489 // and the leaf is visible in the pvs
490 // (the first two checks won't cause as many cache misses as the leaf checks)
491 for (p = leaf->portals;p;p = p->next)
493 r_refdef.stats.world_portals++;
494 if (DotProduct(r_view.origin, p->plane.normal) < (p->plane.dist + 1)
495 && !r_viewcache.world_leafvisible[p->past - model->brush.data_leafs]
496 && CHECKPVSBIT(r_viewcache.world_pvsbits, p->past->clusterindex)
497 && !R_CullBox(p->mins, p->maxs)
498 && leafstackpos < (int)(sizeof(leafstack) / sizeof(leafstack[0])))
499 leafstack[leafstackpos++] = p->past;
506 void R_Q1BSP_DrawSky(entity_render_t *ent)
508 if (ent->model == NULL)
510 if (ent == r_refdef.worldentity)
511 R_DrawWorldSurfaces(true);
513 R_DrawModelSurfaces(ent, true);
516 void R_Q1BSP_Draw(entity_render_t *ent)
518 model_t *model = ent->model;
521 if (ent == r_refdef.worldentity)
522 R_DrawWorldSurfaces(false);
524 R_DrawModelSurfaces(ent, false);
527 typedef struct r_q1bsp_getlightinfo_s
530 vec3_t relativelightorigin;
533 unsigned char *outleafpvs;
536 unsigned char *outsurfacepvs;
537 unsigned char *tempsurfacepvs;
538 unsigned char *outshadowtrispvs;
539 unsigned char *outlighttrispvs;
545 const unsigned char *pvs;
546 qboolean svbsp_active;
547 qboolean svbsp_insertoccluder;
549 r_q1bsp_getlightinfo_t;
551 void R_Q1BSP_RecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, mnode_t *node)
557 mplane_t *plane = node->plane;
558 //if (!BoxesOverlap(info->lightmins, info->lightmaxs, node->mins, node->maxs))
562 //if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, r_shadow_rtlight_numfrustumplanes, r_shadow_rtlight_frustumplanes))
566 if (info->lightmins[plane->type] > plane->dist)
567 node = node->children[0];
568 else if (info->lightmaxs[plane->type] < plane->dist)
569 node = node->children[1];
570 else if (info->relativelightorigin[plane->type] >= plane->dist)
572 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
573 node = node->children[1];
577 R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
578 node = node->children[0];
583 sides = BoxOnPlaneSide(info->lightmins, info->lightmaxs, plane);
586 // recurse front side first because the svbsp building prefers it
587 if (PlaneDist(info->relativelightorigin, plane) >= 0)
589 R_Q1BSP_RecursiveGetLightInfo(info, node->children[0]);
590 node = node->children[1];
594 R_Q1BSP_RecursiveGetLightInfo(info, node->children[1]);
595 node = node->children[0];
599 return; // ERROR: NAN bounding box!
601 node = node->children[sides - 1];
604 if (!r_shadow_compilingrtlight && R_CullBoxCustomPlanes(node->mins, node->maxs, r_shadow_rtlight_numfrustumplanes, r_shadow_rtlight_frustumplanes))
606 leaf = (mleaf_t *)node;
607 if (info->svbsp_active)
611 double points[128][3];
612 for (portal = leaf->portals;portal;portal = portal->next)
614 for (i = 0;i < portal->numpoints;i++)
615 VectorCopy(portal->points[i].position, points[i]);
616 if (SVBSP_AddPolygon(&r_svbsp, portal->numpoints, points[0], false, NULL, NULL, 0) & 2)
620 return; // no portals of this leaf visible
624 if (r_shadow_frontsidecasting.integer && info->pvs != NULL && !CHECKPVSBIT(info->pvs, leaf->clusterindex))
627 // inserting occluders does not alter the leaf info
628 if (!info->svbsp_insertoccluder)
630 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
631 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
632 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
633 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
634 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
635 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
636 if (info->outleafpvs)
638 int leafindex = leaf - info->model->brush.data_leafs;
639 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
641 SETPVSBIT(info->outleafpvs, leafindex);
642 info->outleaflist[info->outnumleafs++] = leafindex;
646 if (info->outsurfacepvs)
648 int leafsurfaceindex;
650 int triangleindex, t;
655 for (leafsurfaceindex = 0;leafsurfaceindex < leaf->numleafsurfaces;leafsurfaceindex++)
657 surfaceindex = leaf->firstleafsurface[leafsurfaceindex];
658 if (!CHECKPVSBIT(info->outsurfacepvs, surfaceindex))
660 surface = info->model->data_surfaces + surfaceindex;
661 if (BoxesOverlap(info->lightmins, info->lightmaxs, surface->mins, surface->maxs)
662 && (!info->svbsp_insertoccluder || !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)))
664 qboolean addedtris = false;
665 qboolean insidebox = BoxInsideBox(surface->mins, surface->maxs, info->lightmins, info->lightmaxs);
666 for (triangleindex = 0, t = surface->num_firstshadowmeshtriangle, e = info->model->brush.shadowmesh->element3i + t * 3;triangleindex < surface->num_triangles;triangleindex++, t++, e += 3)
668 v[0] = info->model->brush.shadowmesh->vertex3f + e[0] * 3;
669 v[1] = info->model->brush.shadowmesh->vertex3f + e[1] * 3;
670 v[2] = info->model->brush.shadowmesh->vertex3f + e[2] * 3;
671 if (insidebox || TriangleOverlapsBox(v[0], v[1], v[2], info->lightmins, info->lightmaxs))
673 if (info->svbsp_insertoccluder)
675 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE) && r_shadow_frontsidecasting.integer != PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
677 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
679 VectorCopy(v[0], v2[0]);
680 VectorCopy(v[1], v2[1]);
681 VectorCopy(v[2], v2[2]);
682 if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], true, NULL, NULL, 0) & 2))
688 if (info->svbsp_active)
690 VectorCopy(v[0], v2[0]);
691 VectorCopy(v[1], v2[1]);
692 VectorCopy(v[2], v2[2]);
693 if (!(SVBSP_AddPolygon(&r_svbsp, 3, v2[0], false, NULL, NULL, 0) & 2))
696 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOCULLFACE)
698 // if the material is double sided we
699 // can't cull by direction
700 SETPVSBIT(info->outlighttrispvs, t);
702 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
703 SETPVSBIT(info->outshadowtrispvs, t);
705 else if (r_shadow_frontsidecasting.integer)
707 // front side casting occludes backfaces,
708 // so they are completely useless as both
709 // casters and lit polygons
710 if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]))
712 SETPVSBIT(info->outlighttrispvs, t);
714 if (!(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
715 SETPVSBIT(info->outshadowtrispvs, t);
719 // back side casting does not occlude
720 // anything so we can't cull lit polygons
721 SETPVSBIT(info->outlighttrispvs, t);
723 if (!PointInfrontOfTriangle(info->relativelightorigin, v[0], v[1], v[2]) && !(surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW))
724 SETPVSBIT(info->outshadowtrispvs, t);
731 SETPVSBIT(info->outsurfacepvs, surfaceindex);
732 info->outsurfacelist[info->outnumsurfaces++] = surfaceindex;
740 void R_Q1BSP_CallRecursiveGetLightInfo(r_q1bsp_getlightinfo_t *info, qboolean use_svbsp)
745 VectorCopy(info->relativelightorigin, origin);
748 r_svbsp.maxnodes = max(r_svbsp.maxnodes, 1<<18);
749 r_svbsp.nodes = Mem_Alloc(r_main_mempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
751 info->svbsp_active = true;
752 info->svbsp_insertoccluder = true;
755 SVBSP_Init(&r_svbsp, origin, r_svbsp.maxnodes, r_svbsp.nodes);
756 R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
757 // if that failed, retry with more nodes
758 if (r_svbsp.ranoutofnodes)
760 // an upper limit is imposed
761 if (r_svbsp.maxnodes >= 2<<22)
763 Mem_Free(r_svbsp.nodes);
764 r_svbsp.maxnodes *= 2;
765 r_svbsp.nodes = Mem_Alloc(tempmempool, r_svbsp.maxnodes * sizeof(svbsp_node_t));
770 // now clear the surfacepvs array because we need to redo it
771 memset(info->outsurfacepvs, 0, (info->model->nummodelsurfaces + 7) >> 3);
772 info->outnumsurfaces = 0;
775 info->svbsp_active = false;
777 // we HAVE to mark the leaf the light is in as lit, because portals are
778 // irrelevant to a leaf that the light source is inside of
779 // (and they are all facing away, too)
781 mnode_t *node = info->model->brush.data_nodes;
784 node = node->children[(node->plane->type < 3 ? info->relativelightorigin[node->plane->type] : DotProduct(info->relativelightorigin,node->plane->normal)) < node->plane->dist];
785 leaf = (mleaf_t *)node;
786 info->outmins[0] = min(info->outmins[0], leaf->mins[0]);
787 info->outmins[1] = min(info->outmins[1], leaf->mins[1]);
788 info->outmins[2] = min(info->outmins[2], leaf->mins[2]);
789 info->outmaxs[0] = max(info->outmaxs[0], leaf->maxs[0]);
790 info->outmaxs[1] = max(info->outmaxs[1], leaf->maxs[1]);
791 info->outmaxs[2] = max(info->outmaxs[2], leaf->maxs[2]);
792 if (info->outleafpvs)
794 int leafindex = leaf - info->model->brush.data_leafs;
795 if (!CHECKPVSBIT(info->outleafpvs, leafindex))
797 SETPVSBIT(info->outleafpvs, leafindex);
798 info->outleaflist[info->outnumleafs++] = leafindex;
803 info->svbsp_insertoccluder = false;
804 R_Q1BSP_RecursiveGetLightInfo(info, info->model->brush.data_nodes);
805 if (developer.integer >= 100 && use_svbsp)
807 Con_Printf("GetLightInfo: svbsp built with %i nodes, polygon stats:\n", r_svbsp.numnodes);
808 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);
809 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);
813 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)
815 r_q1bsp_getlightinfo_t info;
816 VectorCopy(relativelightorigin, info.relativelightorigin);
817 info.lightradius = lightradius;
818 info.lightmins[0] = info.relativelightorigin[0] - info.lightradius;
819 info.lightmins[1] = info.relativelightorigin[1] - info.lightradius;
820 info.lightmins[2] = info.relativelightorigin[2] - info.lightradius;
821 info.lightmaxs[0] = info.relativelightorigin[0] + info.lightradius;
822 info.lightmaxs[1] = info.relativelightorigin[1] + info.lightradius;
823 info.lightmaxs[2] = info.relativelightorigin[2] + info.lightradius;
824 if (ent->model == NULL)
826 VectorCopy(info.lightmins, outmins);
827 VectorCopy(info.lightmaxs, outmaxs);
828 *outnumleafspointer = 0;
829 *outnumsurfacespointer = 0;
832 info.model = ent->model;
833 info.outleaflist = outleaflist;
834 info.outleafpvs = outleafpvs;
835 info.outnumleafs = 0;
836 info.outsurfacelist = outsurfacelist;
837 info.outsurfacepvs = outsurfacepvs;
838 info.outshadowtrispvs = outshadowtrispvs;
839 info.outlighttrispvs = outlighttrispvs;
840 info.outnumsurfaces = 0;
841 VectorCopy(info.relativelightorigin, info.outmins);
842 VectorCopy(info.relativelightorigin, info.outmaxs);
843 memset(outleafpvs, 0, (info.model->brush.num_leafs + 7) >> 3);
844 memset(outsurfacepvs, 0, (info.model->nummodelsurfaces + 7) >> 3);
845 if (info.model->brush.shadowmesh)
846 memset(outshadowtrispvs, 0, (info.model->brush.shadowmesh->numtriangles + 7) >> 3);
848 memset(outshadowtrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
849 memset(outlighttrispvs, 0, (info.model->surfmesh.num_triangles + 7) >> 3);
850 if (info.model->brush.GetPVS && r_shadow_frontsidecasting.integer)
851 info.pvs = info.model->brush.GetPVS(info.model, info.relativelightorigin);
854 R_UpdateAllTextureInfo(ent);
856 if (r_shadow_frontsidecasting.integer && r_shadow_compilingrtlight && r_shadow_realtime_world_compileportalculling.integer)
858 // use portal recursion for exact light volume culling, and exact surface checking
859 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);
861 else if (r_shadow_frontsidecasting.integer && r_shadow_realtime_dlight_portalculling.integer)
863 // use portal recursion for exact light volume culling, but not the expensive exact surface checking
864 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);
868 // recurse the bsp tree, checking leafs and surfaces for visibility
869 // optionally using svbsp for exact culling of compiled lights
870 // (or if the user enables dlight svbsp culling, which is mostly for
871 // debugging not actual use)
872 R_Q1BSP_CallRecursiveGetLightInfo(&info, r_shadow_compilingrtlight ? r_shadow_realtime_world_compilesvbsp.integer : r_shadow_realtime_dlight_svbspculling.integer);
875 // limit combined leaf box to light boundaries
876 outmins[0] = max(info.outmins[0] - 1, info.lightmins[0]);
877 outmins[1] = max(info.outmins[1] - 1, info.lightmins[1]);
878 outmins[2] = max(info.outmins[2] - 1, info.lightmins[2]);
879 outmaxs[0] = min(info.outmaxs[0] + 1, info.lightmaxs[0]);
880 outmaxs[1] = min(info.outmaxs[1] + 1, info.lightmaxs[1]);
881 outmaxs[2] = min(info.outmaxs[2] + 1, info.lightmaxs[2]);
883 *outnumleafspointer = info.outnumleafs;
884 *outnumsurfacespointer = info.outnumsurfaces;
887 void R_Q1BSP_CompileShadowVolume(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativelightdirection, float lightradius, int numsurfaces, const int *surfacelist)
889 model_t *model = ent->model;
891 int surfacelistindex;
892 float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
893 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Begin(r_main_mempool, 32768, 32768, NULL, NULL, NULL, false, false, true);
894 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
895 for (surfacelistindex = 0;surfacelistindex < numsurfaces;surfacelistindex++)
897 surface = model->data_surfaces + surfacelist[surfacelistindex];
898 if (surface->texture->currentframe->basematerialflags & MATERIALFLAG_NOSHADOW)
900 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);
902 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);
903 r_shadow_compilingrtlight->static_meshchain_shadow = Mod_ShadowMesh_Finish(r_main_mempool, r_shadow_compilingrtlight->static_meshchain_shadow, false, false, true);
906 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)
908 model_t *model = ent->model;
910 int modelsurfacelistindex;
911 float projectdistance = relativelightdirection ? lightradius : lightradius + model->radius*2 + r_shadow_projectdistance.value;
912 // check the box in modelspace, it was already checked in worldspace
913 if (!BoxesOverlap(model->normalmins, model->normalmaxs, lightmins, lightmaxs))
915 R_UpdateAllTextureInfo(ent);
916 if (model->brush.shadowmesh)
918 R_Shadow_PrepareShadowMark(model->brush.shadowmesh->numtriangles);
919 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
921 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
922 if (surface->texture->currentframe->currentmaterialflags & MATERIALFLAG_NOSHADOW)
924 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);
926 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);
930 projectdistance = lightradius + model->radius*2;
931 R_Shadow_PrepareShadowMark(model->surfmesh.num_triangles);
932 // identify lit faces within the bounding box
933 for (modelsurfacelistindex = 0;modelsurfacelistindex < modelnumsurfaces;modelsurfacelistindex++)
935 surface = model->data_surfaces + modelsurfacelist[modelsurfacelistindex];
936 rsurface_texture = surface->texture->currentframe;
937 if (rsurface_texture->currentmaterialflags & MATERIALFLAG_NOSHADOW)
939 RSurf_PrepareVerticesForBatch(false, false, 1, &surface);
940 R_Shadow_MarkVolumeFromBox(surface->num_firsttriangle, surface->num_triangles, rsurface_vertex3f, rsurface_model->surfmesh.data_element3i, relativelightorigin, relativelightdirection, lightmins, lightmaxs, surface->mins, surface->maxs);
942 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);
946 #define BATCHSIZE 1024
948 static void R_Q1BSP_DrawLight_TransparentCallback(const entity_render_t *ent, const rtlight_t *rtlight, int numsurfaces, int *surfacelist)
950 int i, j, endsurface;
953 // note: in practice this never actually receives batches), oh well
954 R_Shadow_RenderMode_Begin();
955 R_Shadow_RenderMode_ActiveLight((rtlight_t *)rtlight);
956 R_Shadow_RenderMode_Lighting(false, true);
957 R_Shadow_SetupEntityLight(ent);
958 for (i = 0;i < numsurfaces;i = j)
961 surface = rsurface_model->data_surfaces + surfacelist[i];
962 t = surface->texture;
963 R_UpdateTextureInfo(ent, t);
964 rsurface_texture = t->currentframe;
965 endsurface = min(j + BATCHSIZE, numsurfaces);
966 for (j = i;j < endsurface;j++)
968 surface = rsurface_model->data_surfaces + surfacelist[j];
969 if (t != surface->texture)
971 RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
972 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));
975 R_Shadow_RenderMode_End();
978 #define RSURF_MAX_BATCHSURFACES 1024
980 void R_Q1BSP_DrawLight(entity_render_t *ent, int numsurfaces, const int *surfacelist, const unsigned char *trispvs)
982 model_t *model = ent->model;
984 int i, k, l, m, mend, endsurface, batchnumsurfaces, batchnumtriangles, batchfirstvertex, batchlastvertex;
985 qboolean usebufferobject;
986 const int *element3i;
987 msurface_t *batchsurfacelist[RSURF_MAX_BATCHSURFACES];
988 int batchelements[BATCHSIZE*3];
991 RSurf_ActiveModelEntity(ent, true, true);
992 R_UpdateAllTextureInfo(ent);
994 element3i = rsurface_model->surfmesh.data_element3i;
995 // this is a double loop because non-visible surface skipping has to be
996 // fast, and even if this is not the world model (and hence no visibility
997 // checking) the input surface list and batch buffer are different formats
998 // so some processing is necessary. (luckily models have few surfaces)
999 for (i = 0;i < numsurfaces;)
1001 batchnumsurfaces = 0;
1002 endsurface = min(i + RSURF_MAX_BATCHSURFACES, numsurfaces);
1003 if (ent == r_refdef.worldentity)
1005 for (;i < endsurface;i++)
1006 if (r_viewcache.world_surfacevisible[surfacelist[i]])
1007 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1011 for (;i < endsurface;i++)
1012 batchsurfacelist[batchnumsurfaces++] = model->data_surfaces + surfacelist[i];
1014 if (!batchnumsurfaces)
1016 for (k = 0;k < batchnumsurfaces;k = l)
1018 surface = batchsurfacelist[k];
1019 tex = surface->texture;
1020 rsurface_texture = tex->currentframe;
1021 if (rsurface_texture->currentmaterialflags & (MATERIALFLAG_WALL | MATERIALFLAG_WATER))
1023 if (rsurface_texture->currentmaterialflags & MATERIALFLAGMASK_DEPTHSORTED)
1025 vec3_t tempcenter, center;
1026 for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1028 surface = batchsurfacelist[l];
1029 tempcenter[0] = (surface->mins[0] + surface->maxs[0]) * 0.5f;
1030 tempcenter[1] = (surface->mins[1] + surface->maxs[1]) * 0.5f;
1031 tempcenter[2] = (surface->mins[2] + surface->maxs[2]) * 0.5f;
1032 Matrix4x4_Transform(&rsurface_entity->matrix, tempcenter, center);
1033 R_MeshQueue_AddTransparent(rsurface_texture->currentmaterialflags & MATERIALFLAG_NODEPTHTEST ? r_view.origin : center, R_Q1BSP_DrawLight_TransparentCallback, rsurface_entity, surface - rsurface_model->data_surfaces, r_shadow_rtlight);
1038 // use the bufferobject if all triangles are accepted
1039 usebufferobject = true;
1040 batchnumtriangles = 0;
1041 // note: this only accepts consecutive surfaces because
1042 // non-consecutive surfaces often have extreme vertex
1043 // ranges (due to large numbers of surfaces omitted
1045 surface = batchsurfacelist[k];
1046 for (l = k;l < batchnumsurfaces && surface == batchsurfacelist[l] && tex == surface->texture;l++, surface++)
1048 RSurf_PrepareVerticesForBatch(true, true, 1, &surface);
1049 for (m = surface->num_firsttriangle, mend = m + surface->num_triangles;m < mend;m++)
1051 if (r_shadow_culltriangles.integer)
1055 if (!CHECKPVSBIT(trispvs, m))
1057 usebufferobject = false;
1063 if (r_shadow_frontsidecasting.integer && !PointInfrontOfTriangle(r_shadow_entitylightorigin, rsurface_vertex3f + element3i[m*3+0]*3, rsurface_vertex3f + element3i[m*3+1]*3, rsurface_vertex3f + element3i[m*3+2]*3))
1065 usebufferobject = false;
1070 batchelements[batchnumtriangles*3+0] = element3i[m*3+0];
1071 batchelements[batchnumtriangles*3+1] = element3i[m*3+1];
1072 batchelements[batchnumtriangles*3+2] = element3i[m*3+2];
1073 batchnumtriangles++;
1074 r_refdef.stats.lights_lighttriangles++;
1075 if (batchnumtriangles >= BATCHSIZE)
1077 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1078 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
1079 batchnumtriangles = 0;
1080 usebufferobject = false;
1083 r_refdef.stats.lights_lighttriangles += batchsurfacelist[l]->num_triangles;
1085 if (batchnumtriangles > 0)
1087 Mod_VertexRangeFromElements(batchnumtriangles*3, batchelements, &batchfirstvertex, &batchlastvertex);
1088 if (usebufferobject)
1089 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, ent->model->surfmesh.ebo, sizeof(int[3]) * batchsurfacelist[k]->num_firsttriangle);
1091 R_Shadow_RenderLighting(batchfirstvertex, batchlastvertex + 1 - batchfirstvertex, batchnumtriangles, batchelements, 0, 0);
1097 // skip ahead to the next texture
1098 for (l = k;l < batchnumsurfaces && tex == batchsurfacelist[l]->texture;l++)
1106 void R_ReplaceWorldTexture (void)
1111 const char *r, *newt;
1112 m = r_refdef.worldmodel;
1116 Con_Print("r_replacemaptexture <texname> <newtexname> - replaces texture\n");
1117 Con_Print("r_replacemaptexture <texname> - switch back to default texture\n");
1120 if(!cl.islocalgame || !cl.worldmodel)
1122 Con_Print("This command works only in singleplayer\n");
1129 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1131 if(t->width && !strcasecmp(t->name, r))
1133 if(Mod_LoadSkinFrame(&t->skinframes[0], (char*)newt, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer))
1135 Con_Printf("%s replaced with %s\n", r, newt);
1140 Con_Printf("%s was not found\n", newt);
1141 Mod_LoadSkinFrame(&t->skinframes[0], (char*)r, TEXF_MIPMAP | TEXF_ALPHA | TEXF_PRECACHE | TEXF_PICMIP, false, r_fullbrights.integer);//back to default
1149 void R_ListWorldTextures (void)
1154 m = r_refdef.worldmodel;
1156 Con_Print("Worldmodel textures :\n");
1157 for(i=0,t=m->data_textures;i<m->num_textures;i++,t++)
1158 if (t->numskinframes)
1159 Con_Printf("%s\n", t->name);
1163 static void gl_surf_start(void)
1167 static void gl_surf_shutdown(void)
1171 static void gl_surf_newmap(void)
1176 void GL_Surf_Init(void)
1179 Cvar_RegisterVariable(&r_ambient);
1180 Cvar_RegisterVariable(&r_lockpvs);
1181 Cvar_RegisterVariable(&r_lockvisibility);
1182 Cvar_RegisterVariable(&r_useportalculling);
1183 Cvar_RegisterVariable(&r_q3bsp_renderskydepth);
1185 Cmd_AddCommand ("r_replacemaptexture", R_ReplaceWorldTexture, "override a map texture for testing purposes");
1186 Cmd_AddCommand ("r_listmaptextures", R_ListWorldTextures, "list all textures used by the current map");
1188 //R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);