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
25 #define MAX_LIGHTMAP_SIZE 256
27 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
28 static float floatblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
30 static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
32 cvar_t r_ambient = {0, "r_ambient", "0"};
33 cvar_t r_vertexsurfaces = {0, "r_vertexsurfaces", "0"};
34 cvar_t r_dlightmap = {CVAR_SAVE, "r_dlightmap", "1"};
35 cvar_t r_drawportals = {0, "r_drawportals", "0"};
36 cvar_t r_testvis = {0, "r_testvis", "0"};
37 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
38 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
39 cvar_t r_surfaceworldnode = {0, "r_surfaceworldnode", "0"};
41 static int dlightdivtable[32768];
43 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
45 int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
47 float dist, impact[3], local[3];
51 smax = (surf->extents[0] >> 4) + 1;
52 tmax = (surf->extents[1] >> 4) + 1;
55 for (lnum = 0; lnum < r_numdlights; lnum++)
57 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
58 continue; // not lit by this light
60 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
61 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
63 // for comparisons to minimum acceptable light
64 // compensate for LIGHTOFFSET
65 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
72 if (surf->plane->type < 3)
74 VectorCopy(local, impact);
75 impact[surf->plane->type] -= dist;
79 impact[0] = local[0] - surf->plane->normal[0] * dist;
80 impact[1] = local[1] - surf->plane->normal[1] * dist;
81 impact[2] = local[2] - surf->plane->normal[2] * dist;
84 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
85 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
87 s = bound(0, impacts, smax * 16) - impacts;
88 t = bound(0, impactt, tmax * 16) - impactt;
89 i = s * s + t * t + dist2;
93 // reduce calculations
94 for (s = 0, i = impacts; s < smax; s++, i -= 16)
95 sdtable[s] = i * i + dist2;
97 maxdist3 = maxdist - dist2;
99 // convert to 8.8 blocklights format
100 red = r_dlight[lnum].light[0] * (1.0f / 128.0f);
101 green = r_dlight[lnum].light[1] * (1.0f / 128.0f);
102 blue = r_dlight[lnum].light[2] * (1.0f / 128.0f);
103 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
107 for (t = 0;t < tmax;t++, i -= 16)
110 // make sure some part of it is visible on this line
113 maxdist2 = maxdist - td;
114 for (s = 0;s < smax;s++)
116 if (sdtable[s] < maxdist2)
118 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
122 bl[1] += (green * k);
137 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
139 int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
140 float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
144 smax = (surf->extents[0] >> 4) + 1;
145 tmax = (surf->extents[1] >> 4) + 1;
148 for (lnum = 0; lnum < r_numdlights; lnum++)
150 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
151 continue; // not lit by this light
153 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
154 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
156 // for comparisons to minimum acceptable light
157 // compensate for LIGHTOFFSET
158 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
161 dist2 += LIGHTOFFSET;
162 if (dist2 >= maxdist)
165 if (surf->plane->type < 3)
167 VectorCopy(local, impact);
168 impact[surf->plane->type] -= dist;
172 impact[0] = local[0] - surf->plane->normal[0] * dist;
173 impact[1] = local[1] - surf->plane->normal[1] * dist;
174 impact[2] = local[2] - surf->plane->normal[2] * dist;
177 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
178 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
180 td = bound(0, impacts, smax * 16) - impacts;
181 td1 = bound(0, impactt, tmax * 16) - impactt;
182 td = td * td + td1 * td1 + dist2;
186 // reduce calculations
187 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
188 sdtable[s] = td1 * td1 + dist2;
190 maxdist3 = maxdist - dist2;
192 // convert to 8.8 blocklights format
193 red = r_dlight[lnum].light[0];
194 green = r_dlight[lnum].light[1];
195 blue = r_dlight[lnum].light[2];
196 subtract = r_dlight[lnum].subtract * 32768.0f;
197 bl = floatblocklights;
200 for (t = 0;t < tmax;t++, td1 -= 16.0f)
203 // make sure some part of it is visible on this line
206 maxdist2 = maxdist - td;
207 for (s = 0;s < smax;s++)
209 if (sdtable[s] < maxdist2)
211 k = (32768.0f / (sdtable[s] + td)) - subtract;
231 Combine and scale multiple lightmaps into the 8.8 format in blocklights
234 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf, int dlightchanged)
236 if (!r_floatbuildlightmap.integer)
238 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
239 unsigned int *bl, scale;
240 qbyte *lightmap, *out, *stain;
242 // update cached lighting info
243 surf->cached_dlight = 0;
244 surf->cached_lightmapscalebit = r_lightmapscalebit;
245 surf->cached_ambient = r_ambient.value;
246 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
247 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
248 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
249 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
251 smax = (surf->extents[0]>>4)+1;
252 tmax = (surf->extents[1]>>4)+1;
255 lightmap = surf->samples;
257 // set to full bright if no light data
259 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
261 for (i = 0;i < size3;i++)
267 j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
270 for (i = 0;i < size3;i++)
274 memset(bl, 0, size*3*sizeof(unsigned int));
276 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
278 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
279 if (surf->cached_dlight)
281 else if (dlightchanged)
282 return; // don't upload if only updating dlights and none mattered
285 // add all the lightmaps
289 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
290 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
291 bl[i] += lightmap[i] * scale;
295 stain = surf->stainsamples;
298 // deal with lightmap brightness scale
299 shift = 7 + r_lightmapscalebit + 8;
300 if (ent->model->lightmaprgba)
302 stride = (surf->lightmaptexturestride - smax) * 4;
303 for (i = 0;i < tmax;i++, out += stride)
305 for (j = 0;j < smax;j++)
307 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
308 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
309 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
316 stride = (surf->lightmaptexturestride - smax) * 3;
317 for (i = 0;i < tmax;i++, out += stride)
319 for (j = 0;j < smax;j++)
321 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
322 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
323 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
328 R_UpdateTexture(surf->lightmaptexture, templight);
332 int smax, tmax, i, j, size, size3, maps, stride, l;
334 qbyte *lightmap, *out, *stain;
336 // update cached lighting info
337 surf->cached_dlight = 0;
338 surf->cached_lightmapscalebit = r_lightmapscalebit;
339 surf->cached_ambient = r_ambient.value;
340 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
341 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
342 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
343 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
345 smax = (surf->extents[0]>>4)+1;
346 tmax = (surf->extents[1]>>4)+1;
349 lightmap = surf->samples;
351 // set to full bright if no light data
352 bl = floatblocklights;
353 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
356 j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
361 for (i = 0;i < size3;i++)
365 memset(bl, 0, size*3*sizeof(float));
367 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
369 surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
370 if (surf->cached_dlight)
372 else if (dlightchanged)
373 return; // don't upload if only updating dlights and none mattered
376 // add all the lightmaps
379 bl = floatblocklights;
380 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
381 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
382 bl[i] += lightmap[i] * scale;
385 stain = surf->stainsamples;
386 bl = floatblocklights;
388 // deal with lightmap brightness scale
389 scale = 1.0f / (1 << (7 + r_lightmapscalebit + 8));
390 if (ent->model->lightmaprgba)
392 stride = (surf->lightmaptexturestride - smax) * 4;
393 for (i = 0;i < tmax;i++, out += stride)
395 for (j = 0;j < smax;j++)
397 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
398 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
399 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
406 stride = (surf->lightmaptexturestride - smax) * 3;
407 for (i = 0;i < tmax;i++, out += stride)
409 for (j = 0;j < smax;j++)
411 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
412 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
413 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
418 R_UpdateTexture(surf->lightmaptexture, templight);
422 void R_StainNode (mnode_t *node, model_t *model, vec3_t origin, float radius, float fcolor[8])
424 float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
425 msurface_t *surf, *endsurf;
426 int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
430 maxdist = radius * radius;
431 invradius = 1.0f / radius;
434 if (node->contents < 0)
436 ndist = PlaneDiff(origin, node->plane);
439 node = node->children[0];
444 node = node->children[1];
448 dist2 = ndist * ndist;
449 maxdist3 = maxdist - dist2;
451 if (node->plane->type < 3)
453 VectorCopy(origin, impact);
454 impact[node->plane->type] -= ndist;
458 impact[0] = origin[0] - node->plane->normal[0] * ndist;
459 impact[1] = origin[1] - node->plane->normal[1] * ndist;
460 impact[2] = origin[2] - node->plane->normal[2] * ndist;
463 for (surf = model->surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
465 if (surf->stainsamples)
467 smax = (surf->extents[0] >> 4) + 1;
468 tmax = (surf->extents[1] >> 4) + 1;
470 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
471 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
473 s = bound(0, impacts, smax * 16) - impacts;
474 t = bound(0, impactt, tmax * 16) - impactt;
475 i = s * s + t * t + dist2;
479 // reduce calculations
480 for (s = 0, i = impacts; s < smax; s++, i -= 16)
481 sdtable[s] = i * i + dist2;
483 bl = surf->stainsamples;
488 for (t = 0;t < tmax;t++, i -= 16)
491 // make sure some part of it is visible on this line
494 maxdist2 = maxdist - td;
495 for (s = 0;s < smax;s++)
497 if (sdtable[s] < maxdist2)
499 ratio = lhrandom(0.0f, 1.0f);
500 a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
501 if (a >= (1.0f / 64.0f))
505 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
506 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
507 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
517 // force lightmap upload
519 surf->cached_dlight = true;
523 if (node->children[0]->contents >= 0)
525 if (node->children[1]->contents >= 0)
527 R_StainNode(node->children[0], model, origin, radius, fcolor);
528 node = node->children[1];
533 node = node->children[0];
537 else if (node->children[1]->contents >= 0)
539 node = node->children[1];
544 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
548 entity_render_t *ent;
554 fcolor[3] = ca1 * (1.0f / 64.0f);
555 fcolor[4] = cr2 - cr1;
556 fcolor[5] = cg2 - cg1;
557 fcolor[6] = cb2 - cb1;
558 fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
560 model = cl.worldmodel;
562 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, origin, radius, fcolor);
564 // look for embedded bmodels
565 for (n = 0;n < cl_num_brushmodel_entities;n++)
567 ent = cl_brushmodel_entities[n];
569 if (model && model->name[0] == '*')
571 Mod_CheckLoaded(model);
572 if (model->type == mod_brush)
574 Matrix4x4_Transform(&ent->inversematrix, origin, org);
575 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, org, radius, fcolor);
583 =============================================================
587 =============================================================
590 static void RSurf_AddLightmapToVertexColors(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
595 if (styles[0] != 255)
597 for (i = 0;i < numverts;i++, c += 4)
599 lm = samples + lightmapoffsets[i];
600 scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
601 VectorMA(c, scale, lm, c);
602 if (styles[1] != 255)
605 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
606 VectorMA(c, scale, lm, c);
607 if (styles[2] != 255)
610 scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
611 VectorMA(c, scale, lm, c);
612 if (styles[3] != 255)
615 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
616 VectorMA(c, scale, lm, c);
624 static void RSurf_FogColors(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
630 for (i = 0;i < numverts;i++, v += 4, c += 4)
632 VectorSubtract(v, modelorg, diff);
633 f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
634 VectorScale(c, f, c);
637 else if (colorscale != 1)
638 for (i = 0;i < numverts;i++, c += 4)
639 VectorScale(c, colorscale, c);
642 static void RSurf_FoggedColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
651 for (i = 0;i < numverts;i++, v += 4, c += 4)
653 VectorSubtract(v, modelorg, diff);
654 f = 1 - exp(fogdensity/DotProduct(diff, diff));
663 for (i = 0;i < numverts;i++, c += 4)
673 static void RSurf_FogPassColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
680 for (i = 0;i < numverts;i++, v += 4, c += 4)
682 VectorSubtract(v, modelorg, diff);
683 f = exp(fogdensity/DotProduct(diff, diff));
691 static void RSurf_ScaleColors(float *c, float scale, int numverts)
695 for (i = 0;i < numverts;i++, c += 4)
696 VectorScale(c, scale, c);
699 static int RSurf_LightSeparate(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color)
704 int i, l, lit = false;
707 for (l = 0;l < r_numdlights;l++)
709 if (dlightbits[l >> 5] & (1 << (l & 31)))
712 Matrix4x4_Transform(matrix, rd->origin, lightorigin);
713 for (i = 0, v = vert, c = color;i < numverts;i++, v += 4, c += 4)
715 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
716 if (f < rd->cullradius2)
718 f = (1.0f / f) - rd->subtract;
719 VectorMA(c, f, rd->light, c);
728 // note: this untransforms lights to do the checking,
729 // and takes surf->mesh->verts data
730 static int RSurf_LightCheck(const matrix4x4_t *matrix, const int *dlightbits, const surfmesh_t *mesh)
736 for (l = 0;l < r_numdlights;l++)
738 if (dlightbits[l >> 5] & (1 << (l & 31)))
741 Matrix4x4_Transform(matrix, rd->origin, lightorigin);
742 for (i = 0, v = mesh->verts;i < mesh->numverts;i++, v += 4)
743 if (VectorDistance2(v, lightorigin) < rd->cullradius2)
750 static void RSurfShader_Sky(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
752 const msurface_t *surf;
753 const surfmesh_t *mesh;
756 // LordHavoc: HalfLife maps have freaky skypolys...
757 if (ent->model->ishlbsp)
762 skyrendernow = false;
767 R_Mesh_Matrix(&ent->matrix);
769 // draw depth-only polys
770 memset(&m, 0, sizeof(m));
773 qglColorMask(0,0,0,0);
774 // just to make sure that braindead drivers don't draw anything
775 // despite that colormask...
776 m.blendfunc1 = GL_ZERO;
777 m.blendfunc2 = GL_ONE;
782 m.blendfunc1 = GL_ONE;
783 m.blendfunc2 = GL_ZERO;
787 for (surf = firstsurf;surf;surf = surf->texturechain)
789 if (surf->visframe == r_framecount)
791 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
793 R_Mesh_ResizeCheck(mesh->numverts);
794 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
795 GL_Color(fogcolor[0] * r_colorscale, fogcolor[1] * r_colorscale, fogcolor[2] * r_colorscale, 1);
796 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
800 qglColorMask(1,1,1,1);
803 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
805 const entity_render_t *ent = calldata1;
806 const msurface_t *surf = ent->model->surfaces + calldata2;
808 const surfmesh_t *mesh;
810 float alpha = ent->alpha * (surf->flags & SURF_WATERALPHA ? r_wateralpha.value : 1);
813 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
815 R_Mesh_Matrix(&ent->matrix);
817 memset(&m, 0, sizeof(m));
818 texture = surf->texinfo->texture->currentframe[ent->frame != 0];
819 if (texture->rendertype == SURFRENDER_ADD)
821 m.blendfunc1 = GL_SRC_ALPHA;
822 m.blendfunc2 = GL_ONE;
824 else if (texture->rendertype == SURFRENDER_ALPHA)
826 m.blendfunc1 = GL_SRC_ALPHA;
827 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
831 m.blendfunc1 = GL_ONE;
832 m.blendfunc2 = GL_ZERO;
834 m.tex[0] = R_GetTexture(texture->texture);
835 colorscale = r_colorscale;
836 if (gl_combine.integer)
838 m.texrgbscale[0] = 4;
843 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
845 R_Mesh_ResizeCheck(mesh->numverts);
846 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
847 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
848 f = surf->flags & SURF_DRAWFULLBRIGHT ? 1.0f : ((surf->flags & SURF_LIGHTMAP) ? 0 : 0.5f);
849 R_FillColors(varray_color, mesh->numverts, f, f, f, alpha);
850 if (!(surf->flags & SURF_DRAWFULLBRIGHT || ent->effects & EF_FULLBRIGHT))
852 if (surf->dlightframe == r_framecount)
853 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
854 if (surf->flags & SURF_LIGHTMAP)
855 RSurf_AddLightmapToVertexColors(mesh->lightmapoffsets, varray_color, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
857 RSurf_FogColors(varray_vertex, varray_color, colorscale, mesh->numverts, modelorg);
858 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
863 memset(&m, 0, sizeof(m));
864 m.blendfunc1 = GL_SRC_ALPHA;
865 m.blendfunc2 = GL_ONE;
866 m.tex[0] = R_GetTexture(texture->fogtexture);
868 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
870 R_Mesh_ResizeCheck(mesh->numverts);
871 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
873 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
874 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], alpha, r_colorscale, mesh->numverts, modelorg);
875 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
880 static void RSurfShader_Water(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
882 const msurface_t *surf;
884 if (texture->rendertype != SURFRENDER_OPAQUE)
886 for (surf = firstsurf;surf;surf = surf->texturechain)
888 if (surf->visframe == r_framecount)
890 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
891 R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->surfaces);
896 for (surf = firstsurf;surf;surf = surf->texturechain)
897 if (surf->visframe == r_framecount)
898 RSurfShader_Water_Callback(ent, surf - ent->model->surfaces);
901 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf)
903 float base, colorscale;
904 const surfmesh_t *mesh;
908 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
909 memset(&m, 0, sizeof(m));
910 texture = surf->texinfo->texture->currentframe[ent->frame != 0];
911 if (texture->rendertype == SURFRENDER_ADD)
913 m.blendfunc1 = GL_SRC_ALPHA;
914 m.blendfunc2 = GL_ONE;
916 else if (texture->rendertype == SURFRENDER_ALPHA)
918 m.blendfunc1 = GL_SRC_ALPHA;
919 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
923 m.blendfunc1 = GL_ONE;
924 m.blendfunc2 = GL_ZERO;
926 m.tex[0] = R_GetTexture(texture->texture);
927 colorscale = r_colorscale;
928 if (gl_combine.integer)
930 m.texrgbscale[0] = 4;
933 base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
936 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
938 R_Mesh_ResizeCheck(mesh->numverts);
939 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
940 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
941 R_FillColors(varray_color, mesh->numverts, base, base, base, ent->alpha);
942 if (!(ent->effects & EF_FULLBRIGHT))
944 if (surf->dlightframe == r_framecount)
945 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
946 if (surf->flags & SURF_LIGHTMAP)
947 RSurf_AddLightmapToVertexColors(mesh->lightmapoffsets, varray_color, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
949 RSurf_FogColors(varray_vertex, varray_color, colorscale, mesh->numverts, modelorg);
950 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
954 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
956 const surfmesh_t *mesh;
960 texture = surf->texinfo->texture->currentframe[ent->frame != 0];
961 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
962 memset(&m, 0, sizeof(m));
963 m.blendfunc1 = GL_SRC_ALPHA;
964 m.blendfunc2 = GL_ONE;
965 m.tex[0] = R_GetTexture(texture->glowtexture);
968 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
970 R_Mesh_ResizeCheck(mesh->numverts);
971 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
972 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
973 RSurf_FoggedColors(varray_vertex, varray_color, 1, 1, 1, ent->alpha, r_colorscale, mesh->numverts, modelorg);
974 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
978 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
980 const surfmesh_t *mesh;
984 texture = surf->texinfo->texture->currentframe[ent->frame != 0];
985 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
986 memset(&m, 0, sizeof(m));
987 m.blendfunc1 = GL_SRC_ALPHA;
988 m.blendfunc2 = GL_ONE;
989 m.tex[0] = R_GetTexture(texture->fogtexture);
992 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
994 R_Mesh_ResizeCheck(mesh->numverts);
995 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
997 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
998 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], ent->alpha, r_colorscale, mesh->numverts, modelorg);
999 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1003 static void RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1005 const msurface_t *surf;
1006 const surfmesh_t *mesh;
1008 int lightmaptexturenum;
1010 memset(&m, 0, sizeof(m));
1011 m.blendfunc1 = GL_ONE;
1012 m.blendfunc2 = GL_ZERO;
1013 m.tex[0] = R_GetTexture(texture->texture);
1014 m.tex[1] = R_GetTexture(firstsurf->lightmaptexture);
1015 m.tex[2] = R_GetTexture(texture->detailtexture);
1016 m.texrgbscale[0] = 1;
1017 m.texrgbscale[1] = 4;
1018 m.texrgbscale[2] = 2;
1020 cl = (float) (1 << r_lightmapscalebit) * r_colorscale;
1021 GL_Color(cl, cl, cl, 1);
1022 for (surf = firstsurf;surf;surf = surf->texturechain)
1024 if (surf->visframe == r_framecount)
1026 lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1027 if (m.tex[1] != lightmaptexturenum)
1029 m.tex[1] = lightmaptexturenum;
1032 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1034 R_Mesh_ResizeCheck(mesh->numverts);
1035 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1036 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
1037 memcpy(varray_texcoord[1], mesh->uvw, mesh->numverts * sizeof(float[4]));
1038 memcpy(varray_texcoord[2], mesh->abc, mesh->numverts * sizeof(float[4]));
1039 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1045 static void RSurfShader_OpaqueWall_Pass_BaseDoubleTex(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1047 const msurface_t *surf;
1048 const surfmesh_t *mesh;
1050 int lightmaptexturenum;
1051 memset(&m, 0, sizeof(m));
1052 m.blendfunc1 = GL_ONE;
1053 m.blendfunc2 = GL_ZERO;
1054 m.tex[0] = R_GetTexture(texture->texture);
1055 m.tex[1] = R_GetTexture(firstsurf->lightmaptexture);
1056 if (gl_combine.integer)
1057 m.texrgbscale[1] = 4;
1059 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1060 for (surf = firstsurf;surf;surf = surf->texturechain)
1062 if (surf->visframe == r_framecount)
1064 lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1065 if (m.tex[1] != lightmaptexturenum)
1067 m.tex[1] = lightmaptexturenum;
1070 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1072 R_Mesh_ResizeCheck(mesh->numverts);
1073 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1074 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
1075 memcpy(varray_texcoord[1], mesh->uvw, mesh->numverts * sizeof(float[4]));
1076 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1082 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1084 const msurface_t *surf;
1085 const surfmesh_t *mesh;
1087 memset(&m, 0, sizeof(m));
1088 m.blendfunc1 = GL_ONE;
1089 m.blendfunc2 = GL_ZERO;
1090 m.tex[0] = R_GetTexture(texture->texture);
1092 GL_Color(1, 1, 1, 1);
1093 for (surf = firstsurf;surf;surf = surf->texturechain)
1095 if (surf->visframe == r_framecount)
1097 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1099 R_Mesh_ResizeCheck(mesh->numverts);
1100 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1101 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
1102 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1108 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1110 const msurface_t *surf;
1111 const surfmesh_t *mesh;
1113 int lightmaptexturenum;
1114 memset(&m, 0, sizeof(m));
1115 m.blendfunc1 = GL_ZERO;
1116 m.blendfunc2 = GL_SRC_COLOR;
1117 m.tex[0] = R_GetTexture(firstsurf->lightmaptexture);
1118 if (gl_combine.integer)
1119 m.texrgbscale[0] = 4;
1121 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1122 for (surf = firstsurf;surf;surf = surf->texturechain)
1124 if (surf->visframe == r_framecount)
1126 lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1127 if (m.tex[0] != lightmaptexturenum)
1129 m.tex[0] = lightmaptexturenum;
1132 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1134 R_Mesh_ResizeCheck(mesh->numverts);
1135 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1136 memcpy(varray_texcoord[0], mesh->uvw, mesh->numverts * sizeof(float[4]));
1137 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1143 static void RSurfShader_OpaqueWall_Pass_Light(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1145 const msurface_t *surf;
1146 const surfmesh_t *mesh;
1150 memset(&m, 0, sizeof(m));
1151 m.blendfunc1 = GL_SRC_ALPHA;
1152 m.blendfunc2 = GL_ONE;
1153 m.tex[0] = R_GetTexture(texture->texture);
1154 colorscale = r_colorscale;
1155 if (gl_combine.integer)
1157 m.texrgbscale[0] = 4;
1158 colorscale *= 0.25f;
1162 for (surf = firstsurf;surf;surf = surf->texturechain)
1164 if (surf->visframe == r_framecount && surf->dlightframe == r_framecount)
1166 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1168 if (RSurf_LightCheck(&ent->inversematrix, surf->dlightbits, mesh))
1170 R_Mesh_ResizeCheck(mesh->numverts);
1171 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1172 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
1173 R_FillColors(varray_color, mesh->numverts, 0, 0, 0, 1);
1174 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
1175 RSurf_ScaleColors(varray_color, colorscale, mesh->numverts);
1176 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1183 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1185 const msurface_t *surf;
1186 const surfmesh_t *mesh;
1189 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1190 memset(&m, 0, sizeof(m));
1191 m.blendfunc1 = GL_SRC_ALPHA;
1192 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1195 for (surf = firstsurf;surf;surf = surf->texturechain)
1197 if (surf->visframe == r_framecount)
1199 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1201 R_Mesh_ResizeCheck(mesh->numverts);
1202 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1204 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
1205 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], 1, r_colorscale, mesh->numverts, modelorg);
1206 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1212 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1214 const msurface_t *surf;
1215 const surfmesh_t *mesh;
1217 memset(&m, 0, sizeof(m));
1218 m.blendfunc1 = GL_DST_COLOR;
1219 m.blendfunc2 = GL_SRC_COLOR;
1220 m.tex[0] = R_GetTexture(texture->detailtexture);
1222 GL_Color(1, 1, 1, 1);
1223 for (surf = firstsurf;surf;surf = surf->texturechain)
1225 if (surf->visframe == r_framecount)
1227 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1229 R_Mesh_ResizeCheck(mesh->numverts);
1230 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1231 memcpy(varray_texcoord[0], mesh->abc, mesh->numverts * sizeof(float[4]));
1232 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1238 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1240 const msurface_t *surf;
1241 const surfmesh_t *mesh;
1243 memset(&m, 0, sizeof(m));
1244 m.blendfunc1 = GL_SRC_ALPHA;
1245 m.blendfunc2 = GL_ONE;
1246 m.tex[0] = R_GetTexture(texture->glowtexture);
1248 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1249 for (surf = firstsurf;surf;surf = surf->texturechain)
1251 if (surf->visframe == r_framecount)
1253 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1255 R_Mesh_ResizeCheck(mesh->numverts);
1256 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1257 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
1258 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1264 static void RSurfShader_OpaqueWall_Pass_OpaqueGlow(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1266 const msurface_t *surf;
1267 const surfmesh_t *mesh;
1269 memset(&m, 0, sizeof(m));
1270 m.blendfunc1 = GL_SRC_ALPHA;
1271 m.blendfunc2 = GL_ZERO;
1272 m.tex[0] = R_GetTexture(texture->glowtexture);
1275 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1277 GL_Color(0, 0, 0, 1);
1278 for (surf = firstsurf;surf;surf = surf->texturechain)
1280 if (surf->visframe == r_framecount)
1282 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1284 R_Mesh_ResizeCheck(mesh->numverts);
1285 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1286 memcpy(varray_texcoord[0], mesh->str, mesh->numverts * sizeof(float[4]));
1287 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1293 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1295 const entity_render_t *ent = calldata1;
1296 const msurface_t *surf = ent->model->surfaces + calldata2;
1298 texture = surf->texinfo->texture->currentframe[ent->frame != 0];
1299 R_Mesh_Matrix(&ent->matrix);
1300 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1301 if (texture->glowtexture)
1302 RSurfShader_Wall_Pass_Glow(ent, surf);
1304 RSurfShader_Wall_Pass_Fog(ent, surf);
1307 extern cvar_t r_shadows;
1308 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const texture_t *texture, const msurface_t *firstsurf)
1310 const msurface_t *surf;
1312 if (texture->rendertype != SURFRENDER_OPAQUE)
1314 // transparent vertex shaded from lightmap
1315 for (surf = firstsurf;surf;surf = surf->texturechain)
1317 if (surf->visframe == r_framecount)
1319 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1320 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1324 else if (r_shadows.integer == 3 && cl.worldmodel->numlights)
1326 // opaque base lighting
1327 RSurfShader_OpaqueWall_Pass_OpaqueGlow(ent, texture, firstsurf);
1329 RSurfShader_OpaqueWall_Pass_Fog(ent, texture, firstsurf);
1331 else if (r_vertexsurfaces.integer)
1333 // opaque vertex shaded from lightmap
1334 for (surf = firstsurf;surf;surf = surf->texturechain)
1335 if (surf->visframe == r_framecount)
1336 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1337 if (texture->glowtexture)
1338 for (surf = firstsurf;surf;surf = surf->texturechain)
1339 if (surf->visframe == r_framecount)
1340 RSurfShader_Wall_Pass_Glow(ent, surf);
1342 for (surf = firstsurf;surf;surf = surf->texturechain)
1343 if (surf->visframe == r_framecount)
1344 RSurfShader_Wall_Pass_Fog(ent, surf);
1348 // opaque lightmapped
1349 if (r_textureunits.integer >= 2)
1351 if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1352 RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(ent, texture, firstsurf);
1355 RSurfShader_OpaqueWall_Pass_BaseDoubleTex(ent, texture, firstsurf);
1356 if (r_detailtextures.integer)
1357 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, firstsurf);
1362 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture, firstsurf);
1363 RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture, firstsurf);
1364 if (r_detailtextures.integer)
1365 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture, firstsurf);
1367 if (!r_dlightmap.integer && !(ent->effects & EF_FULLBRIGHT))
1368 RSurfShader_OpaqueWall_Pass_Light(ent, texture, firstsurf);
1369 if (texture->glowtexture)
1370 RSurfShader_OpaqueWall_Pass_Glow(ent, texture, firstsurf);
1372 RSurfShader_OpaqueWall_Pass_Fog(ent, texture, firstsurf);
1376 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, SHADERFLAGS_NEEDLIGHTMAP};
1377 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, 0};
1378 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, 0};
1380 int Cshader_count = 3;
1381 Cshader_t *Cshaders[3] =
1383 &Cshader_wall_lightmap,
1388 extern cvar_t r_shadows;
1389 void R_PrepareSurfaces(entity_render_t *ent)
1391 int i, texframe, numsurfaces, *surfacevisframes;
1393 msurface_t *surf, *surfaces;
1401 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1402 numsurfaces = model->nummodelsurfaces;
1403 surfaces = model->surfaces + model->firstmodelsurface;
1404 surfacevisframes = model->surfacevisframes + model->firstmodelsurface;
1406 texframe = (int)(cl.time * 5.0f);
1407 for (i = 0;i < model->numtextures;i++)
1409 t = model->textures + i;
1410 if (ent->effects & EF_ADDITIVE)
1411 t->rendertype = SURFRENDER_ADD;
1412 else if (ent->alpha < 1 || (t->flags & SURF_WATERALPHA && r_wateralpha.value < 1) || t->fogtexture != NULL)
1413 t->rendertype = SURFRENDER_ALPHA;
1415 t->rendertype = SURFRENDER_OPAQUE;
1418 t->currentframe[0] = t->anim_frames[0][(t->anim_total[0] >= 2) ? (texframe % t->anim_total[0]) : 0];
1419 t->currentframe[1] = t->anim_frames[1][(t->anim_total[1] >= 2) ? (texframe % t->anim_total[1]) : 0];
1423 if (r_dynamic.integer && r_shadows.integer != 3)
1426 for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1428 if (surfacevisframes[i] == r_framecount)
1430 #if !WORLDNODECULLBACKFACES
1431 // mark any backface surfaces as not visible
1432 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1434 if (!(surf->flags & SURF_PLANEBACK))
1435 surfacevisframes[i] = -1;
1439 if ((surf->flags & SURF_PLANEBACK))
1440 surfacevisframes[i] = -1;
1442 if (surfacevisframes[i] == r_framecount)
1446 surf->visframe = r_framecount;
1447 if (!r_vertexsurfaces.integer && surf->lightmaptexture != NULL)
1449 if (surf->cached_dlight
1450 || surf->cached_ambient != r_ambient.value
1451 || surf->cached_lightmapscalebit != r_lightmapscalebit)
1452 R_BuildLightMap(ent, surf, false); // base lighting changed
1453 else if (r_dynamic.integer)
1455 if (surf->styles[0] != 255 && (d_lightstylevalue[surf->styles[0]] != surf->cached_light[0]
1456 || (surf->styles[1] != 255 && (d_lightstylevalue[surf->styles[1]] != surf->cached_light[1]
1457 || (surf->styles[2] != 255 && (d_lightstylevalue[surf->styles[2]] != surf->cached_light[2]
1458 || (surf->styles[3] != 255 && (d_lightstylevalue[surf->styles[3]] != surf->cached_light[3]))))))))
1459 R_BuildLightMap(ent, surf, false); // base lighting changed
1460 else if (surf->dlightframe == r_framecount && r_dlightmap.integer)
1461 R_BuildLightMap(ent, surf, true); // only dlights
1469 void R_DrawSurfaces(entity_render_t *ent, int type)
1473 R_Mesh_Matrix(&ent->matrix);
1474 for (i = 0, t = ent->model->textures;i < ent->model->numtextures;i++, t++)
1475 if (t->shader->shaderfunc[type] && ent->model->texturesurfacechains[i])
1476 t->shader->shaderfunc[type](ent, t, ent->model->texturesurfacechains[i]);
1479 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1484 const entity_render_t *ent = calldata1;
1485 const mportal_t *portal = ent->model->portals + calldata2;
1486 memset(&m, 0, sizeof(m));
1487 m.blendfunc1 = GL_SRC_ALPHA;
1488 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1489 R_Mesh_Matrix(&ent->matrix);
1491 R_Mesh_ResizeCheck(portal->numpoints);
1492 i = portal - ent->model->portals;
1493 GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_colorscale,
1494 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_colorscale,
1495 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_colorscale,
1497 if (PlaneDiff(r_origin, (&portal->plane)) > 0)
1499 for (i = portal->numpoints - 1, v = varray_vertex;i >= 0;i--, v += 4)
1500 VectorCopy(portal->points[i].position, v);
1503 for (i = 0, v = varray_vertex;i < portal->numpoints;i++, v += 4)
1504 VectorCopy(portal->points[i].position, v);
1505 R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1508 static void R_DrawPortals(entity_render_t *ent)
1511 mportal_t *portal, *endportal;
1512 float temp[3], center[3], f;
1514 if (r_drawportals.integer < 1)
1517 for (portal = ent->model->portals, endportal = portal + ent->model->numportals;portal < endportal;portal++)
1519 if (portal->here->pvsframe == ent->model->pvsframecount || portal->past->pvsframe == ent->model->pvsframecount)
1521 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1524 for (i = 0;i < portal->numpoints;i++)
1525 VectorAdd(temp, portal->points[i].position, temp);
1526 f = ixtable[portal->numpoints];
1527 VectorScale(temp, f, temp);
1528 Matrix4x4_Transform(&ent->matrix, temp, center);
1529 R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->portals);
1535 void R_PrepareBrushModel(entity_render_t *ent)
1537 int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1540 #if WORLDNODECULLBACKFACES
1544 // because bmodels can be reused, we have to decide which things to render
1545 // from scratch every time
1547 #if WORLDNODECULLBACKFACES
1548 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1550 numsurfaces = model->nummodelsurfaces;
1551 surf = model->surfaces + model->firstmodelsurface;
1552 surfacevisframes = model->surfacevisframes + model->firstmodelsurface;
1553 surfacepvsframes = model->surfacepvsframes + model->firstmodelsurface;
1554 for (i = 0;i < numsurfaces;i++, surf++)
1556 #if WORLDNODECULLBACKFACES
1557 // mark any backface surfaces as not visible
1558 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1560 if ((surf->flags & SURF_PLANEBACK))
1562 surfacevisframes[i] = r_framecount;
1563 surfacepvsframes[i] = model->pvsframecount;
1568 if (!(surf->flags & SURF_PLANEBACK))
1570 surfacevisframes[i] = r_framecount;
1571 surfacepvsframes[i] = model->pvsframecount;
1575 surfacevisframes[i] = r_framecount;
1576 surfacepvsframes[i] = model->pvsframecount;
1578 surf->dlightframe = -1;
1580 R_PrepareSurfaces(ent);
1583 void R_SurfaceWorldNode (entity_render_t *ent)
1585 int i, *surfacevisframes, *surfacepvsframes, surfnum;
1592 surfacevisframes = model->surfacevisframes + model->firstmodelsurface;
1593 surfacepvsframes = model->surfacepvsframes + model->firstmodelsurface;
1594 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1596 for (leaf = model->pvsleafchain;leaf;leaf = leaf->pvschain)
1598 if (!R_CullBox (leaf->mins, leaf->maxs))
1601 leaf->visframe = r_framecount;
1605 for (i = 0;i < model->pvssurflistlength;i++)
1607 surfnum = model->pvssurflist[i];
1608 surf = model->surfaces + surfnum;
1609 #if WORLDNODECULLBACKFACES
1610 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1612 if ((surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1613 surfacevisframes[surfnum] = r_framecount;
1617 if (!(surf->flags & SURF_PLANEBACK) && !R_CullBox (surf->poly_mins, surf->poly_maxs))
1618 surfacevisframes[surfnum] = r_framecount;
1621 if (!R_CullBox (surf->poly_mins, surf->poly_maxs))
1622 surfacevisframes[surfnum] = r_framecount;
1627 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1629 int c, leafstackpos, *mark, *surfacevisframes;
1630 #if WORLDNODECULLBACKFACES
1634 mleaf_t *leaf, *leafstack[8192];
1637 msurface_t *surfaces;
1638 // LordHavoc: portal-passage worldnode with PVS;
1639 // follows portals leading outward from viewleaf, does not venture
1640 // offscreen or into leafs that are not visible, faster than Quake's
1641 // RecursiveWorldNode
1642 surfaces = ent->model->surfaces;
1643 surfacevisframes = ent->model->surfacevisframes;
1644 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1645 viewleaf->worldnodeframe = r_framecount;
1646 leafstack[0] = viewleaf;
1648 while (leafstackpos)
1651 leaf = leafstack[--leafstackpos];
1652 leaf->visframe = r_framecount;
1653 // draw any surfaces bounding this leaf
1654 if (leaf->nummarksurfaces)
1656 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1658 #if WORLDNODECULLBACKFACES
1660 if (surfacevisframes[n] != r_framecount)
1662 surf = surfaces + n;
1663 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1665 if ((surf->flags & SURF_PLANEBACK))
1666 surfacevisframes[n] = r_framecount;
1670 if (!(surf->flags & SURF_PLANEBACK))
1671 surfacevisframes[n] = r_framecount;
1675 surfacevisframes[*mark++] = r_framecount;
1679 // follow portals into other leafs
1680 for (p = leaf->portals;p;p = p->next)
1682 // LordHavoc: this DotProduct hurts less than a cache miss
1683 // (which is more likely to happen if backflowing through leafs)
1684 if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1687 if (leaf->worldnodeframe != r_framecount)
1689 leaf->worldnodeframe = r_framecount;
1690 // FIXME: R_CullBox is absolute, should be done relative
1691 if (leaf->pvsframe == ent->model->pvsframecount && !R_CullBox(leaf->mins, leaf->maxs))
1692 leafstack[leafstackpos++] = leaf;
1697 if (r_drawportals.integer)
1701 void R_PVSUpdate (entity_render_t *ent, mleaf_t *viewleaf)
1703 int i, j, l, c, bits, *surfacepvsframes, *mark;
1709 if (model && (model->pvsviewleaf != viewleaf || model->pvsviewleafnovis != r_novis.integer))
1711 model->pvsframecount++;
1712 model->pvsviewleaf = viewleaf;
1713 model->pvsviewleafnovis = r_novis.integer;
1714 model->pvsleafchain = NULL;
1715 model->pvssurflistlength = 0;
1718 surfacepvsframes = model->surfacepvsframes;
1719 vis = Mod_LeafPVS (viewleaf, model);
1720 for (j = 0;j < model->numleafs;j += 8)
1725 l = model->numleafs - j;
1728 for (i = 0;i < l;i++)
1730 if (bits & (1 << i))
1732 leaf = &model->leafs[j + i + 1];
1733 leaf->pvschain = model->pvsleafchain;
1734 model->pvsleafchain = leaf;
1735 leaf->pvsframe = model->pvsframecount;
1736 // mark surfaces bounding this leaf as visible
1737 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--, mark++)
1739 if (surfacepvsframes[*mark] != model->pvsframecount)
1741 surfacepvsframes[*mark] = model->pvsframecount;
1742 model->pvssurflist[model->pvssurflistlength++] = *mark;
1750 for (i = 0, j = model->firstmodelsurface;i < model->nummodelsurfaces;i++, j++)
1751 if (model->surfacepvsframes[j] == model->pvsframecount)
1752 model->pvssurflist[model->pvssurflistlength++] = j;
1758 void R_WorldVisibility (entity_render_t *ent)
1763 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1764 viewleaf = Mod_PointInLeaf (modelorg, ent->model);
1765 R_PVSUpdate(ent, viewleaf);
1770 if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1771 R_SurfaceWorldNode (ent);
1773 R_PortalWorldNode (ent, viewleaf);
1776 void R_DrawWorld (entity_render_t *ent)
1778 R_PrepareSurfaces(ent);
1779 R_DrawSurfaces(ent, SHADERSTAGE_SKY);
1780 R_DrawSurfaces(ent, SHADERSTAGE_NORMAL);
1783 void R_Model_Brush_DrawSky (entity_render_t *ent)
1785 if (ent != &cl_entities[0].render)
1786 R_PrepareBrushModel(ent);
1787 R_DrawSurfaces(ent, SHADERSTAGE_SKY);
1790 void R_Model_Brush_Draw (entity_render_t *ent)
1793 if (ent != &cl_entities[0].render)
1794 R_PrepareBrushModel(ent);
1795 R_DrawSurfaces(ent, SHADERSTAGE_NORMAL);
1798 void R_Model_Brush_DrawShadowVolume (entity_render_t *ent, vec3_t relativelightorigin, float lightradius)
1801 float projectdistance, temp[3];
1803 VectorSubtract(relativelightorigin, ent->model->shadowmesh_center, temp);
1804 projectdistance = lightradius + ent->model->shadowmesh_radius - sqrt(DotProduct(temp, temp));
1805 if (projectdistance >= 0.1)
1807 R_Mesh_Matrix(&ent->matrix);
1808 for (mesh = ent->model->shadowmesh;mesh;mesh = mesh->next)
1810 R_Mesh_ResizeCheck(mesh->numverts * 2);
1811 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1812 R_Shadow_Volume(mesh->numverts, mesh->numtriangles, varray_vertex, mesh->elements, mesh->neighbors, relativelightorigin, lightradius, projectdistance);
1818 float projectdistance, f, temp[3], lightradius2;
1820 R_Mesh_Matrix(&ent->matrix);
1821 lightradius2 = lightradius * lightradius;
1822 for (i = 0, surf = ent->model->surfaces + ent->model->firstmodelsurface;i < ent->model->nummodelsurfaces;i++, surf++)
1824 if (surf->flags & SURF_SHADOWCAST)
1826 f = PlaneDiff(relativelightorigin, surf->plane);
1827 if (surf->flags & SURF_PLANEBACK)
1829 // draw shadows only for frontfaces
1830 projectdistance = lightradius - f;
1831 if (projectdistance >= 0.1 && projectdistance < lightradius)
1833 VectorSubtract(relativelightorigin, surf->poly_center, temp);
1834 if (DotProduct(temp, temp) < (surf->poly_radius2 + lightradius2))
1836 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1838 R_Mesh_ResizeCheck(mesh->numverts * 2);
1839 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1840 R_Shadow_Volume(mesh->numverts, mesh->numtriangles, varray_vertex, mesh->index, mesh->triangleneighbors, relativelightorigin, lightradius, projectdistance);
1849 void R_Model_Brush_DrawLight(entity_render_t *ent, vec3_t relativelightorigin, vec3_t relativeeyeorigin, float lightradius, float lightdistbias, float lightsubtract, float *lightcolor)
1854 float f, lightradius2;
1856 R_Mesh_Matrix(&ent->matrix);
1857 if (ent != &cl_entities[0].render)
1858 R_PrepareBrushModel(ent);
1859 lightradius2 = lightradius * lightradius;
1860 for (tnum = 0;tnum < ent->model->numtextures;tnum++)
1862 t = ent->model->textures + tnum;
1863 if (ent->model->texturesurfacechains[tnum] && t->rendertype == SURFRENDER_OPAQUE && t->flags & SURF_SHADOWLIGHT)
1865 t = t->currentframe[ent->frame != 0];
1866 for (surf = ent->model->texturesurfacechains[tnum];surf;surf = surf->texturechain)
1868 if (surf->visframe == r_framecount)
1870 f = PlaneDiff(relativelightorigin, surf->plane);
1871 if (surf->flags & SURF_PLANEBACK)
1873 if (f >= -0.1 && f < lightradius)
1875 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1877 R_Mesh_ResizeCheck(mesh->numverts);
1878 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1879 R_Shadow_RenderLighting(mesh->numverts, mesh->numtriangles, mesh->index, mesh->svectors, mesh->tvectors, mesh->normals, mesh->str, relativelightorigin, relativeeyeorigin, lightradius, lightcolor, t->texture, t->glosstexture, t->nmaptexture, NULL);
1888 static void gl_surf_start(void)
1892 static void gl_surf_shutdown(void)
1896 static void gl_surf_newmap(void)
1900 void GL_Surf_Init(void)
1903 dlightdivtable[0] = 4194304;
1904 for (i = 1;i < 32768;i++)
1905 dlightdivtable[i] = 4194304 / (i << 7);
1907 Cvar_RegisterVariable(&r_ambient);
1908 Cvar_RegisterVariable(&r_vertexsurfaces);
1909 Cvar_RegisterVariable(&r_dlightmap);
1910 Cvar_RegisterVariable(&r_drawportals);
1911 Cvar_RegisterVariable(&r_testvis);
1912 Cvar_RegisterVariable(&r_floatbuildlightmap);
1913 Cvar_RegisterVariable(&r_detailtextures);
1914 Cvar_RegisterVariable(&r_surfaceworldnode);
1916 R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);