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 // variables used by R_PVSUpdate
44 int r_pvsframecount = 0;
45 mleaf_t *r_pvsviewleaf = NULL;
46 int r_pvsviewleafnovis = 0;
48 static int R_IntAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
50 int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract, k;
52 float dist, impact[3], local[3];
56 smax = (surf->extents[0] >> 4) + 1;
57 tmax = (surf->extents[1] >> 4) + 1;
60 for (lnum = 0; lnum < r_numdlights; lnum++)
62 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
63 continue; // not lit by this light
65 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
66 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
68 // for comparisons to minimum acceptable light
69 // compensate for LIGHTOFFSET
70 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
77 if (surf->plane->type < 3)
79 VectorCopy(local, impact);
80 impact[surf->plane->type] -= dist;
84 impact[0] = local[0] - surf->plane->normal[0] * dist;
85 impact[1] = local[1] - surf->plane->normal[1] * dist;
86 impact[2] = local[2] - surf->plane->normal[2] * dist;
89 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
90 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
92 s = bound(0, impacts, smax * 16) - impacts;
93 t = bound(0, impactt, tmax * 16) - impactt;
94 i = s * s + t * t + dist2;
98 // reduce calculations
99 for (s = 0, i = impacts; s < smax; s++, i -= 16)
100 sdtable[s] = i * i + dist2;
102 maxdist3 = maxdist - dist2;
104 // convert to 8.8 blocklights format
105 red = r_dlight[lnum].light[0] * (1.0f / 128.0f);
106 green = r_dlight[lnum].light[1] * (1.0f / 128.0f);
107 blue = r_dlight[lnum].light[2] * (1.0f / 128.0f);
108 subtract = (int) (r_dlight[lnum].subtract * 4194304.0f);
112 for (t = 0;t < tmax;t++, i -= 16)
115 // make sure some part of it is visible on this line
118 maxdist2 = maxdist - td;
119 for (s = 0;s < smax;s++)
121 if (sdtable[s] < maxdist2)
123 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
127 bl[1] += (green * k);
142 static int R_FloatAddDynamicLights (const matrix4x4_t *matrix, msurface_t *surf)
144 int lnum, s, t, smax, tmax, smax3, lit, impacts, impactt;
145 float sdtable[256], *bl, k, dist, dist2, maxdist, maxdist2, maxdist3, td1, td, red, green, blue, impact[3], local[3], subtract;
149 smax = (surf->extents[0] >> 4) + 1;
150 tmax = (surf->extents[1] >> 4) + 1;
153 for (lnum = 0; lnum < r_numdlights; lnum++)
155 if (!(surf->dlightbits[lnum >> 5] & (1 << (lnum & 31))))
156 continue; // not lit by this light
158 Matrix4x4_Transform(matrix, r_dlight[lnum].origin, local);
159 dist = DotProduct (local, surf->plane->normal) - surf->plane->dist;
161 // for comparisons to minimum acceptable light
162 // compensate for LIGHTOFFSET
163 maxdist = (int) r_dlight[lnum].cullradius2 + LIGHTOFFSET;
166 dist2 += LIGHTOFFSET;
167 if (dist2 >= maxdist)
170 if (surf->plane->type < 3)
172 VectorCopy(local, impact);
173 impact[surf->plane->type] -= dist;
177 impact[0] = local[0] - surf->plane->normal[0] * dist;
178 impact[1] = local[1] - surf->plane->normal[1] * dist;
179 impact[2] = local[2] - surf->plane->normal[2] * dist;
182 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
183 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
185 td = bound(0, impacts, smax * 16) - impacts;
186 td1 = bound(0, impactt, tmax * 16) - impactt;
187 td = td * td + td1 * td1 + dist2;
191 // reduce calculations
192 for (s = 0, td1 = impacts; s < smax; s++, td1 -= 16.0f)
193 sdtable[s] = td1 * td1 + dist2;
195 maxdist3 = maxdist - dist2;
197 // convert to 8.8 blocklights format
198 red = r_dlight[lnum].light[0];
199 green = r_dlight[lnum].light[1];
200 blue = r_dlight[lnum].light[2];
201 subtract = r_dlight[lnum].subtract * 32768.0f;
202 bl = floatblocklights;
205 for (t = 0;t < tmax;t++, td1 -= 16.0f)
208 // make sure some part of it is visible on this line
211 maxdist2 = maxdist - td;
212 for (s = 0;s < smax;s++)
214 if (sdtable[s] < maxdist2)
216 k = (32768.0f / (sdtable[s] + td)) - subtract;
236 Combine and scale multiple lightmaps into the 8.8 format in blocklights
239 static void R_BuildLightMap (const entity_render_t *ent, msurface_t *surf, int dlightchanged)
241 if (!r_floatbuildlightmap.integer)
243 int smax, tmax, i, j, size, size3, shift, maps, stride, l;
244 unsigned int *bl, scale;
245 qbyte *lightmap, *out, *stain;
247 // update cached lighting info
248 surf->cached_dlight = 0;
249 surf->cached_lightmapscalebit = r_lightmapscalebit;
250 surf->cached_ambient = r_ambient.value;
251 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
252 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
253 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
254 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
256 smax = (surf->extents[0]>>4)+1;
257 tmax = (surf->extents[1]>>4)+1;
260 lightmap = surf->samples;
262 // set to full bright if no light data
264 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
266 for (i = 0;i < size3;i++)
272 j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
275 for (i = 0;i < size3;i++)
279 memset(bl, 0, size*3*sizeof(unsigned int));
281 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
283 surf->cached_dlight = R_IntAddDynamicLights(&ent->inversematrix, surf);
284 if (surf->cached_dlight)
286 else if (dlightchanged)
287 return; // don't upload if only updating dlights and none mattered
290 // add all the lightmaps
294 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
295 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
296 bl[i] += lightmap[i] * scale;
300 stain = surf->stainsamples;
303 // deal with lightmap brightness scale
304 shift = 7 + r_lightmapscalebit + 8;
305 if (ent->model->lightmaprgba)
307 stride = (surf->lightmaptexturestride - smax) * 4;
308 for (i = 0;i < tmax;i++, out += stride)
310 for (j = 0;j < smax;j++)
312 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
313 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
314 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
321 stride = (surf->lightmaptexturestride - smax) * 3;
322 for (i = 0;i < tmax;i++, out += stride)
324 for (j = 0;j < smax;j++)
326 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
327 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
328 l = (*bl++ * *stain++) >> shift;*out++ = min(l, 255);
333 R_UpdateTexture(surf->lightmaptexture, templight);
337 int smax, tmax, i, j, size, size3, maps, stride, l;
339 qbyte *lightmap, *out, *stain;
341 // update cached lighting info
342 surf->cached_dlight = 0;
343 surf->cached_lightmapscalebit = r_lightmapscalebit;
344 surf->cached_ambient = r_ambient.value;
345 surf->cached_light[0] = d_lightstylevalue[surf->styles[0]];
346 surf->cached_light[1] = d_lightstylevalue[surf->styles[1]];
347 surf->cached_light[2] = d_lightstylevalue[surf->styles[2]];
348 surf->cached_light[3] = d_lightstylevalue[surf->styles[3]];
350 smax = (surf->extents[0]>>4)+1;
351 tmax = (surf->extents[1]>>4)+1;
354 lightmap = surf->samples;
356 // set to full bright if no light data
357 bl = floatblocklights;
358 if ((ent->effects & EF_FULLBRIGHT) || !ent->model->lightdata)
361 j = r_ambient.value * 512.0f; // would be 128.0f logically, but using 512.0f to match winquake style
366 for (i = 0;i < size3;i++)
370 memset(bl, 0, size*3*sizeof(float));
372 if (surf->dlightframe == r_framecount && r_dlightmap.integer)
374 surf->cached_dlight = R_FloatAddDynamicLights(&ent->inversematrix, surf);
375 if (surf->cached_dlight)
377 else if (dlightchanged)
378 return; // don't upload if only updating dlights and none mattered
381 // add all the lightmaps
384 bl = floatblocklights;
385 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++, lightmap += size3)
386 for (scale = d_lightstylevalue[surf->styles[maps]], i = 0;i < size3;i++)
387 bl[i] += lightmap[i] * scale;
390 stain = surf->stainsamples;
391 bl = floatblocklights;
393 // deal with lightmap brightness scale
394 scale = 1.0f / (1 << (7 + r_lightmapscalebit + 8));
395 if (ent->model->lightmaprgba)
397 stride = (surf->lightmaptexturestride - smax) * 4;
398 for (i = 0;i < tmax;i++, out += stride)
400 for (j = 0;j < smax;j++)
402 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
403 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
404 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
411 stride = (surf->lightmaptexturestride - smax) * 3;
412 for (i = 0;i < tmax;i++, out += stride)
414 for (j = 0;j < smax;j++)
416 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
417 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
418 l = *bl++ * *stain++ * scale;*out++ = min(l, 255);
423 R_UpdateTexture(surf->lightmaptexture, templight);
427 void R_StainNode (mnode_t *node, model_t *model, vec3_t origin, float radius, float fcolor[8])
429 float ndist, a, ratio, maxdist, maxdist2, maxdist3, invradius, sdtable[256], td, dist2;
430 msurface_t *surf, *endsurf;
431 int i, s, t, smax, tmax, smax3, impacts, impactt, stained;
435 maxdist = radius * radius;
436 invradius = 1.0f / radius;
439 if (node->contents < 0)
441 ndist = PlaneDiff(origin, node->plane);
444 node = node->children[0];
449 node = node->children[1];
453 dist2 = ndist * ndist;
454 maxdist3 = maxdist - dist2;
456 if (node->plane->type < 3)
458 VectorCopy(origin, impact);
459 impact[node->plane->type] -= ndist;
463 impact[0] = origin[0] - node->plane->normal[0] * ndist;
464 impact[1] = origin[1] - node->plane->normal[1] * ndist;
465 impact[2] = origin[2] - node->plane->normal[2] * ndist;
468 for (surf = model->surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
470 if (surf->stainsamples)
472 smax = (surf->extents[0] >> 4) + 1;
473 tmax = (surf->extents[1] >> 4) + 1;
475 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
476 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
478 s = bound(0, impacts, smax * 16) - impacts;
479 t = bound(0, impactt, tmax * 16) - impactt;
480 i = s * s + t * t + dist2;
484 // reduce calculations
485 for (s = 0, i = impacts; s < smax; s++, i -= 16)
486 sdtable[s] = i * i + dist2;
488 bl = surf->stainsamples;
493 for (t = 0;t < tmax;t++, i -= 16)
496 // make sure some part of it is visible on this line
499 maxdist2 = maxdist - td;
500 for (s = 0;s < smax;s++)
502 if (sdtable[s] < maxdist2)
504 ratio = lhrandom(0.0f, 1.0f);
505 a = (fcolor[3] + ratio * fcolor[7]) * (1.0f - sqrt(sdtable[s] + td) * invradius);
506 if (a >= (1.0f / 64.0f))
510 bl[0] = (qbyte) ((float) bl[0] + a * ((fcolor[0] + ratio * fcolor[4]) - (float) bl[0]));
511 bl[1] = (qbyte) ((float) bl[1] + a * ((fcolor[1] + ratio * fcolor[5]) - (float) bl[1]));
512 bl[2] = (qbyte) ((float) bl[2] + a * ((fcolor[2] + ratio * fcolor[6]) - (float) bl[2]));
522 // force lightmap upload
524 surf->cached_dlight = true;
528 if (node->children[0]->contents >= 0)
530 if (node->children[1]->contents >= 0)
532 R_StainNode(node->children[0], model, origin, radius, fcolor);
533 node = node->children[1];
538 node = node->children[0];
542 else if (node->children[1]->contents >= 0)
544 node = node->children[1];
549 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
553 entity_render_t *ent;
559 fcolor[3] = ca1 * (1.0f / 64.0f);
560 fcolor[4] = cr2 - cr1;
561 fcolor[5] = cg2 - cg1;
562 fcolor[6] = cb2 - cb1;
563 fcolor[7] = (ca2 - ca1) * (1.0f / 64.0f);
565 model = cl.worldmodel;
567 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, origin, radius, fcolor);
569 // look for embedded bmodels
570 for (n = 0;n < cl_num_brushmodel_entities;n++)
572 ent = cl_brushmodel_entities[n];
574 if (model && model->name[0] == '*')
576 Mod_CheckLoaded(model);
577 if (model->type == mod_brush)
579 Matrix4x4_Transform(&ent->inversematrix, origin, org);
580 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, org, radius, fcolor);
588 =============================================================
592 =============================================================
595 static void RSurf_AddLightmapToVertexColors(const int *lightmapoffsets, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
600 if (styles[0] != 255)
602 for (i = 0;i < numverts;i++, c += 4)
604 lm = samples + lightmapoffsets[i];
605 scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
606 VectorMA(c, scale, lm, c);
607 if (styles[1] != 255)
610 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
611 VectorMA(c, scale, lm, c);
612 if (styles[2] != 255)
615 scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
616 VectorMA(c, scale, lm, c);
617 if (styles[3] != 255)
620 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
621 VectorMA(c, scale, lm, c);
629 static void RSurf_FogColors(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
635 for (i = 0;i < numverts;i++, v += 4, c += 4)
637 VectorSubtract(v, modelorg, diff);
638 f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
639 VectorScale(c, f, c);
642 else if (colorscale != 1)
643 for (i = 0;i < numverts;i++, c += 4)
644 VectorScale(c, colorscale, c);
647 static void RSurf_FoggedColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
656 for (i = 0;i < numverts;i++, v += 4, c += 4)
658 VectorSubtract(v, modelorg, diff);
659 f = 1 - exp(fogdensity/DotProduct(diff, diff));
668 for (i = 0;i < numverts;i++, c += 4)
678 static void RSurf_FogPassColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
685 for (i = 0;i < numverts;i++, v += 4, c += 4)
687 VectorSubtract(v, modelorg, diff);
688 f = exp(fogdensity/DotProduct(diff, diff));
696 static void RSurf_ScaleColors(float *c, float scale, int numverts)
700 for (i = 0;i < numverts;i++, c += 4)
701 VectorScale(c, scale, c);
704 static int RSurf_LightSeparate(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color)
709 int i, l, lit = false;
712 for (l = 0;l < r_numdlights;l++)
714 if (dlightbits[l >> 5] & (1 << (l & 31)))
717 Matrix4x4_Transform(matrix, rd->origin, lightorigin);
718 for (i = 0, v = vert, c = color;i < numverts;i++, v += 4, c += 4)
720 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
721 if (f < rd->cullradius2)
723 f = (1.0f / f) - rd->subtract;
724 VectorMA(c, f, rd->light, c);
733 // note: this untransforms lights to do the checking,
734 // and takes surf->mesh->verts data
735 static int RSurf_LightCheck(const matrix4x4_t *matrix, const int *dlightbits, const surfmesh_t *mesh)
741 for (l = 0;l < r_numdlights;l++)
743 if (dlightbits[l >> 5] & (1 << (l & 31)))
746 Matrix4x4_Transform(matrix, rd->origin, lightorigin);
747 for (i = 0, v = mesh->verts;i < mesh->numverts;i++, v += 4)
748 if (VectorDistance2(v, lightorigin) < rd->cullradius2)
755 static void RSurfShader_Sky(const entity_render_t *ent, const texture_t *texture)
757 const msurface_t *surf;
758 const surfmesh_t *mesh;
761 // LordHavoc: HalfLife maps have freaky skypolys...
762 if (ent->model->ishlbsp)
767 skyrendernow = false;
772 R_Mesh_Matrix(&ent->matrix);
774 // draw depth-only polys
775 memset(&m, 0, sizeof(m));
778 qglColorMask(0,0,0,0);
779 // just to make sure that braindead drivers don't draw anything
780 // despite that colormask...
781 m.blendfunc1 = GL_ZERO;
782 m.blendfunc2 = GL_ONE;
787 m.blendfunc1 = GL_ONE;
788 m.blendfunc2 = GL_ZERO;
792 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
794 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
796 R_Mesh_ResizeCheck(mesh->numverts);
797 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
798 GL_Color(fogcolor[0] * r_colorscale, fogcolor[1] * r_colorscale, fogcolor[2] * r_colorscale, 1);
799 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
802 qglColorMask(1,1,1,1);
805 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
807 const entity_render_t *ent = calldata1;
808 const msurface_t *surf = ent->model->surfaces + calldata2;
810 const surfmesh_t *mesh;
812 float alpha = ent->alpha * (surf->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value);
814 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
816 R_Mesh_Matrix(&ent->matrix);
818 memset(&m, 0, sizeof(m));
819 if (ent->effects & EF_ADDITIVE)
821 m.blendfunc1 = GL_SRC_ALPHA;
822 m.blendfunc2 = GL_ONE;
824 else if (surf->currenttexture->fogtexture != NULL || alpha < 1)
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(surf->currenttexture->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->st, mesh->numverts * sizeof(float[2]));
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(surf->currenttexture->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->st, mesh->numverts * sizeof(float[2]));
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)
882 const msurface_t *surf;
884 if ((r_wateralpha.value < 1 && !(texture->flags & SURF_DRAWNOALPHA)) || ent->effects & EF_ADDITIVE || texture->fogtexture)
886 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
888 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
889 R_MeshQueue_AddTransparent(center, RSurfShader_Water_Callback, ent, surf - ent->model->surfaces);
893 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
894 RSurfShader_Water_Callback(ent, surf - ent->model->surfaces);
897 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf)
899 float base, colorscale;
900 const surfmesh_t *mesh;
903 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
904 memset(&m, 0, sizeof(m));
905 if (ent->effects & EF_ADDITIVE)
907 m.blendfunc1 = GL_SRC_ALPHA;
908 m.blendfunc2 = GL_ONE;
910 else if (surf->currenttexture->fogtexture != NULL || ent->alpha < 1)
912 m.blendfunc1 = GL_SRC_ALPHA;
913 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
917 m.blendfunc1 = GL_ONE;
918 m.blendfunc2 = GL_ZERO;
920 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
921 colorscale = r_colorscale;
922 if (gl_combine.integer)
924 m.texrgbscale[0] = 4;
927 base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
930 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
932 R_Mesh_ResizeCheck(mesh->numverts);
933 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
934 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
935 R_FillColors(varray_color, mesh->numverts, base, base, base, ent->alpha);
936 if (!(ent->effects & EF_FULLBRIGHT))
938 if (surf->dlightframe == r_framecount)
939 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
940 if (surf->flags & SURF_LIGHTMAP)
941 RSurf_AddLightmapToVertexColors(mesh->lightmapoffsets, varray_color, mesh->numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
943 RSurf_FogColors(varray_vertex, varray_color, colorscale, mesh->numverts, modelorg);
944 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
948 static void RSurfShader_Wall_Pass_BaseFullbright(const entity_render_t *ent, const msurface_t *surf)
950 const surfmesh_t *mesh;
953 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
954 memset(&m, 0, sizeof(m));
955 if (ent->effects & EF_ADDITIVE)
957 m.blendfunc1 = GL_SRC_ALPHA;
958 m.blendfunc2 = GL_ONE;
960 else if (surf->currenttexture->fogtexture != NULL || ent->alpha < 1)
962 m.blendfunc1 = GL_SRC_ALPHA;
963 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
967 m.blendfunc1 = GL_ONE;
968 m.blendfunc2 = GL_ZERO;
970 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
973 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
975 R_Mesh_ResizeCheck(mesh->numverts);
976 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
977 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
978 RSurf_FoggedColors(varray_vertex, varray_color, 1, 1, 1, ent->alpha, r_colorscale, mesh->numverts, modelorg);
979 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
983 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
985 const surfmesh_t *mesh;
988 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
989 memset(&m, 0, sizeof(m));
990 m.blendfunc1 = GL_SRC_ALPHA;
991 m.blendfunc2 = GL_ONE;
992 m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
995 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
997 R_Mesh_ResizeCheck(mesh->numverts);
998 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
999 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1000 RSurf_FoggedColors(varray_vertex, varray_color, 1, 1, 1, ent->alpha, r_colorscale, mesh->numverts, modelorg);
1001 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1005 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
1007 const surfmesh_t *mesh;
1010 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1011 memset(&m, 0, sizeof(m));
1012 m.blendfunc1 = GL_SRC_ALPHA;
1013 m.blendfunc2 = GL_ONE;
1014 m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
1017 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1019 R_Mesh_ResizeCheck(mesh->numverts);
1020 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1022 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1023 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], ent->alpha, r_colorscale, mesh->numverts, modelorg);
1024 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1028 static void RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(const entity_render_t *ent, const texture_t *texture)
1030 const msurface_t *surf;
1031 const surfmesh_t *mesh;
1033 int lightmaptexturenum;
1035 memset(&m, 0, sizeof(m));
1036 m.blendfunc1 = GL_ONE;
1037 m.blendfunc2 = GL_ZERO;
1038 m.tex[0] = R_GetTexture(texture->texture);
1039 m.tex[1] = R_GetTexture(texture->surfacechain->lightmaptexture);
1040 m.tex[2] = R_GetTexture(texture->detailtexture);
1041 m.texrgbscale[0] = 1;
1042 m.texrgbscale[1] = 4;
1043 m.texrgbscale[2] = 2;
1045 cl = (float) (1 << r_lightmapscalebit) * r_colorscale;
1046 GL_Color(cl, cl, cl, 1);
1047 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1049 lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1050 if (m.tex[1] != lightmaptexturenum)
1052 m.tex[1] = lightmaptexturenum;
1055 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1057 R_Mesh_ResizeCheck(mesh->numverts);
1058 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1059 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1060 memcpy(varray_texcoord[1], mesh->uv, mesh->numverts * sizeof(float[2]));
1061 memcpy(varray_texcoord[2], mesh->ab, mesh->numverts * sizeof(float[2]));
1062 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1067 static void RSurfShader_OpaqueWall_Pass_BaseDoubleTex(const entity_render_t *ent, const texture_t *texture)
1069 const msurface_t *surf;
1070 const surfmesh_t *mesh;
1072 int lightmaptexturenum;
1073 memset(&m, 0, sizeof(m));
1074 m.blendfunc1 = GL_ONE;
1075 m.blendfunc2 = GL_ZERO;
1076 m.tex[0] = R_GetTexture(texture->texture);
1077 m.tex[1] = R_GetTexture(texture->surfacechain->lightmaptexture);
1078 if (gl_combine.integer)
1079 m.texrgbscale[1] = 4;
1081 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1082 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1084 lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1085 if (m.tex[1] != lightmaptexturenum)
1087 m.tex[1] = lightmaptexturenum;
1090 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1092 R_Mesh_ResizeCheck(mesh->numverts);
1093 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1094 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1095 memcpy(varray_texcoord[1], mesh->uv, mesh->numverts * sizeof(float[2]));
1096 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1101 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const texture_t *texture)
1103 const msurface_t *surf;
1104 const surfmesh_t *mesh;
1106 memset(&m, 0, sizeof(m));
1107 m.blendfunc1 = GL_ONE;
1108 m.blendfunc2 = GL_ZERO;
1109 m.tex[0] = R_GetTexture(texture->texture);
1111 GL_Color(1, 1, 1, 1);
1112 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1114 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1116 R_Mesh_ResizeCheck(mesh->numverts);
1117 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1118 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1119 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1124 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const texture_t *texture)
1126 const msurface_t *surf;
1127 const surfmesh_t *mesh;
1129 int lightmaptexturenum;
1130 memset(&m, 0, sizeof(m));
1131 m.blendfunc1 = GL_ZERO;
1132 m.blendfunc2 = GL_SRC_COLOR;
1133 m.tex[0] = R_GetTexture(texture->surfacechain->lightmaptexture);
1134 if (gl_combine.integer)
1135 m.texrgbscale[0] = 4;
1137 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1138 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1140 lightmaptexturenum = R_GetTexture(surf->lightmaptexture);
1141 if (m.tex[0] != lightmaptexturenum)
1143 m.tex[0] = lightmaptexturenum;
1146 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1148 R_Mesh_ResizeCheck(mesh->numverts);
1149 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1150 memcpy(varray_texcoord[0], mesh->uv, mesh->numverts * sizeof(float[2]));
1151 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1156 static void RSurfShader_OpaqueWall_Pass_Light(const entity_render_t *ent, const texture_t *texture)
1158 const msurface_t *surf;
1159 const surfmesh_t *mesh;
1163 memset(&m, 0, sizeof(m));
1164 m.blendfunc1 = GL_SRC_ALPHA;
1165 m.blendfunc2 = GL_ONE;
1166 m.tex[0] = R_GetTexture(texture->texture);
1167 colorscale = r_colorscale;
1168 if (gl_combine.integer)
1170 m.texrgbscale[0] = 4;
1171 colorscale *= 0.25f;
1175 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1177 if (surf->dlightframe == r_framecount)
1179 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1181 if (RSurf_LightCheck(&ent->inversematrix, surf->dlightbits, mesh))
1183 R_Mesh_ResizeCheck(mesh->numverts);
1184 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1185 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1186 R_FillColors(varray_color, mesh->numverts, 0, 0, 0, 1);
1187 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, mesh->numverts, varray_vertex, varray_color);
1188 RSurf_ScaleColors(varray_color, colorscale, mesh->numverts);
1189 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1196 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const texture_t *texture)
1198 const msurface_t *surf;
1199 const surfmesh_t *mesh;
1202 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1203 memset(&m, 0, sizeof(m));
1204 m.blendfunc1 = GL_SRC_ALPHA;
1205 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1208 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1210 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1212 R_Mesh_ResizeCheck(mesh->numverts);
1213 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1215 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1216 RSurf_FogPassColors(varray_vertex, varray_color, fogcolor[0], fogcolor[1], fogcolor[2], 1, r_colorscale, mesh->numverts, modelorg);
1217 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1222 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const texture_t *texture)
1224 const msurface_t *surf;
1225 const surfmesh_t *mesh;
1227 memset(&m, 0, sizeof(m));
1228 m.blendfunc1 = GL_DST_COLOR;
1229 m.blendfunc2 = GL_SRC_COLOR;
1230 m.tex[0] = R_GetTexture(texture->detailtexture);
1232 GL_Color(1, 1, 1, 1);
1233 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1235 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1237 R_Mesh_ResizeCheck(mesh->numverts);
1238 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1239 memcpy(varray_texcoord[0], mesh->ab, mesh->numverts * sizeof(float[2]));
1240 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1245 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const texture_t *texture)
1247 const msurface_t *surf;
1248 const surfmesh_t *mesh;
1250 memset(&m, 0, sizeof(m));
1251 m.blendfunc1 = GL_SRC_ALPHA;
1252 m.blendfunc2 = GL_ONE;
1253 m.tex[0] = R_GetTexture(texture->glowtexture);
1255 GL_Color(r_colorscale, r_colorscale, r_colorscale, 1);
1256 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1258 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1260 R_Mesh_ResizeCheck(mesh->numverts);
1261 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1262 memcpy(varray_texcoord[0], mesh->st, mesh->numverts * sizeof(float[2]));
1263 R_Mesh_Draw(mesh->numverts, mesh->numtriangles, mesh->index);
1268 static void RSurfShader_Wall_Fullbright_Callback(const void *calldata1, int calldata2)
1270 const entity_render_t *ent = calldata1;
1271 const msurface_t *surf = ent->model->surfaces + calldata2;
1272 R_Mesh_Matrix(&ent->matrix);
1273 RSurfShader_Wall_Pass_BaseFullbright(ent, surf);
1274 if (surf->currenttexture->glowtexture)
1275 RSurfShader_Wall_Pass_Glow(ent, surf);
1277 RSurfShader_Wall_Pass_Fog(ent, surf);
1280 static void RSurfShader_Wall_Fullbright(const entity_render_t *ent, const texture_t *texture)
1282 const msurface_t *surf;
1284 if (ent->effects & EF_ADDITIVE || ent->alpha < 1 || texture->fogtexture != NULL)
1286 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1288 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1289 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Fullbright_Callback, ent, surf - ent->model->surfaces);
1294 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1295 RSurfShader_Wall_Pass_BaseFullbright(ent, surf);
1296 if (texture->glowtexture)
1297 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1298 RSurfShader_Wall_Pass_Glow(ent, surf);
1300 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1301 RSurfShader_Wall_Pass_Fog(ent, surf);
1305 static void RSurfShader_Wall_Vertex_Callback(const void *calldata1, int calldata2)
1307 const entity_render_t *ent = calldata1;
1308 const msurface_t *surf = ent->model->surfaces + calldata2;
1309 R_Mesh_Matrix(&ent->matrix);
1310 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1311 if (surf->currenttexture->glowtexture)
1312 RSurfShader_Wall_Pass_Glow(ent, surf);
1314 RSurfShader_Wall_Pass_Fog(ent, surf);
1317 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const texture_t *texture)
1319 const msurface_t *surf;
1321 if (ent->effects & EF_ADDITIVE || ent->alpha < 1 || texture->fogtexture != NULL)
1323 // transparent vertex shaded from lightmap
1324 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1326 Matrix4x4_Transform(&ent->matrix, surf->poly_center, center);
1327 R_MeshQueue_AddTransparent(center, RSurfShader_Wall_Vertex_Callback, ent, surf - ent->model->surfaces);
1330 else if (r_vertexsurfaces.integer)
1332 // opaque vertex shaded from lightmap
1333 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1334 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1335 if (texture->glowtexture)
1336 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1337 RSurfShader_Wall_Pass_Glow(ent, surf);
1339 for (surf = texture->surfacechain;surf;surf = surf->texturechain)
1340 RSurfShader_Wall_Pass_Fog(ent, surf);
1344 // opaque lightmapped
1345 if (r_textureunits.integer >= 2)
1347 if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1348 RSurfShader_OpaqueWall_Pass_BaseTripleTexCombine(ent, texture);
1351 RSurfShader_OpaqueWall_Pass_BaseDoubleTex(ent, texture);
1352 if (r_detailtextures.integer)
1353 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture);
1358 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, texture);
1359 RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, texture);
1360 if (r_detailtextures.integer)
1361 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, texture);
1363 if (!r_dlightmap.integer && !(ent->effects & EF_FULLBRIGHT))
1364 RSurfShader_OpaqueWall_Pass_Light(ent, texture);
1365 if (texture->glowtexture)
1366 RSurfShader_OpaqueWall_Pass_Glow(ent, texture);
1368 RSurfShader_OpaqueWall_Pass_Fog(ent, texture);
1372 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, SHADERFLAGS_NEEDLIGHTMAP};
1373 Cshader_t Cshader_wall_fullbright = {{NULL, RSurfShader_Wall_Fullbright}, 0};
1374 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, 0};
1375 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, 0};
1377 int Cshader_count = 4;
1378 Cshader_t *Cshaders[4] =
1380 &Cshader_wall_lightmap,
1381 &Cshader_wall_fullbright,
1386 void R_DrawSurfaces(entity_render_t *ent, int sky, int normal)
1388 int i, alttextures, texframe, framecount, numtextures, numsurfaces, *surfacevisframes;
1389 texture_t *t, *textures;
1391 msurface_t *surf, *surfaces;
1397 // mark the surfaces touched by dynamic lights
1398 if (normal && r_dynamic.integer)
1401 R_Mesh_Matrix(&ent->matrix);
1404 alttextures = ent->frame != 0;
1405 texframe = (int)(cl.time * 5.0f);
1407 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1409 numtextures = model->numtextures;
1410 textures = model->textures;
1411 numsurfaces = model->nummodelsurfaces;
1412 surfaces = model->surfaces + model->firstmodelsurface;
1413 surfacevisframes = model->surfacevisframes + model->firstmodelsurface;
1415 for (i = 0;i < numtextures;i++)
1416 textures[i].surfacechain = NULL;
1418 for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1420 if (surfacevisframes[i] == r_framecount)
1422 #if !WORLDNODECULLBACKFACES
1423 // mark any backface surfaces as not visible
1424 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1426 if (!(surf->flags & SURF_PLANEBACK))
1427 surfacevisframes[i] = -1;
1431 if ((surf->flags & SURF_PLANEBACK))
1432 surfacevisframes[i] = -1;
1434 if (surfacevisframes[i] == r_framecount)
1438 t = surf->texinfo->texture;
1441 framecount = t->anim_total[alttextures];
1442 if (framecount >= 2)
1443 t = t->anim_frames[alttextures][texframe % framecount];
1445 t = t->anim_frames[alttextures][0];
1447 surf->currenttexture = t;
1448 surf->texturechain = t->surfacechain;
1449 t->surfacechain = surf;
1450 if (!r_vertexsurfaces.integer && surf->lightmaptexture != NULL)
1452 if (surf->cached_dlight
1453 || surf->cached_ambient != r_ambient.value
1454 || surf->cached_lightmapscalebit != r_lightmapscalebit)
1455 R_BuildLightMap(ent, surf, false); // base lighting changed
1456 else if (r_dynamic.integer)
1458 if (surf->styles[0] != 255 && (d_lightstylevalue[surf->styles[0]] != surf->cached_light[0]
1459 || (surf->styles[1] != 255 && (d_lightstylevalue[surf->styles[1]] != surf->cached_light[1]
1460 || (surf->styles[2] != 255 && (d_lightstylevalue[surf->styles[2]] != surf->cached_light[2]
1461 || (surf->styles[3] != 255 && (d_lightstylevalue[surf->styles[3]] != surf->cached_light[3]))))))))
1462 R_BuildLightMap(ent, surf, false); // base lighting changed
1463 else if (surf->dlightframe == r_framecount && r_dlightmap.integer)
1464 R_BuildLightMap(ent, surf, true); // only dlights
1472 for (i = 0, t = textures;i < numtextures;i++, t++)
1473 if (t->surfacechain && t->shader->shaderfunc[SHADERSTAGE_SKY])
1474 t->shader->shaderfunc[SHADERSTAGE_SKY](ent, t);
1477 for (i = 0, t = textures;i < numtextures;i++, t++)
1478 if (t->surfacechain && t->shader->shaderfunc[SHADERSTAGE_NORMAL])
1479 t->shader->shaderfunc[SHADERSTAGE_NORMAL](ent, t);
1482 static void R_DrawPortal_Callback(const void *calldata1, int calldata2)
1487 const entity_render_t *ent = calldata1;
1488 const mportal_t *portal = ent->model->portals + calldata2;
1489 memset(&m, 0, sizeof(m));
1490 m.blendfunc1 = GL_SRC_ALPHA;
1491 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1492 R_Mesh_Matrix(&ent->matrix);
1494 R_Mesh_ResizeCheck(portal->numpoints);
1495 i = portal - ent->model->portals;
1496 GL_Color(((i & 0x0007) >> 0) * (1.0f / 7.0f) * r_colorscale,
1497 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * r_colorscale,
1498 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * r_colorscale,
1500 if (PlaneDiff(r_origin, (&portal->plane)) > 0)
1502 for (i = portal->numpoints - 1, v = varray_vertex;i >= 0;i--, v += 4)
1503 VectorCopy(portal->points[i].position, v);
1506 for (i = 0, v = varray_vertex;i < portal->numpoints;i++, v += 4)
1507 VectorCopy(portal->points[i].position, v);
1508 R_Mesh_Draw(portal->numpoints, portal->numpoints - 2, polygonelements);
1511 static void R_DrawPortals(entity_render_t *ent)
1514 mportal_t *portal, *endportal;
1515 float temp[3], center[3], f;
1517 if (r_drawportals.integer < 1)
1520 for (portal = ent->model->portals, endportal = portal + ent->model->numportals;portal < endportal;portal++)
1522 if (portal->here->pvsframe == r_pvsframecount || portal->past->pvsframe == r_pvsframecount)
1524 if (portal->numpoints <= POLYGONELEMENTS_MAXPOINTS)
1527 for (i = 0;i < portal->numpoints;i++)
1528 VectorAdd(temp, portal->points[i].position, temp);
1529 f = ixtable[portal->numpoints];
1530 VectorScale(temp, f, temp);
1531 Matrix4x4_Transform(&ent->matrix, temp, center);
1532 R_MeshQueue_AddTransparent(center, R_DrawPortal_Callback, ent, portal - ent->model->portals);
1538 void R_DrawBrushModel(entity_render_t *ent, int sky, int normal)
1540 int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1543 #if WORLDNODECULLBACKFACES
1547 // because bmodels can be reused, we have to decide which things to render
1548 // from scratch every time
1550 #if WORLDNODECULLBACKFACES
1551 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1553 numsurfaces = model->nummodelsurfaces;
1554 surf = model->surfaces + model->firstmodelsurface;
1555 surfacevisframes = model->surfacevisframes + model->firstmodelsurface;
1556 surfacepvsframes = model->surfacepvsframes + model->firstmodelsurface;
1557 for (i = 0;i < numsurfaces;i++, surf++)
1559 #if WORLDNODECULLBACKFACES
1560 // mark any backface surfaces as not visible
1561 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1563 if ((surf->flags & SURF_PLANEBACK))
1565 surfacevisframes[i] = r_framecount;
1566 surfacepvsframes[i] = r_pvsframecount;
1571 if (!(surf->flags & SURF_PLANEBACK))
1573 surfacevisframes[i] = r_framecount;
1574 surfacepvsframes[i] = r_pvsframecount;
1578 surfacevisframes[i] = r_framecount;
1579 surfacepvsframes[i] = r_pvsframecount;
1581 surf->dlightframe = -1;
1583 R_DrawSurfaces(ent, sky, normal);
1586 void R_SurfaceWorldNode (entity_render_t *ent)
1588 int i, numsurfaces, *surfacevisframes, *surfacepvsframes;
1589 msurface_t *surfaces, *surf;
1594 numsurfaces = model->nummodelsurfaces;
1595 surfaces = model->surfaces + model->firstmodelsurface;
1596 surfacevisframes = model->surfacevisframes + model->firstmodelsurface;
1597 surfacepvsframes = model->surfacepvsframes + model->firstmodelsurface;
1598 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1600 for (i = 0, surf = surfaces;i < numsurfaces;i++, surf++)
1602 if (surfacepvsframes[i] == r_pvsframecount)
1604 #if WORLDNODECULLBACKFACES
1605 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1607 if ((surf->flags & SURF_PLANEBACK) && R_NotCulledBox (surf->poly_mins, surf->poly_maxs))
1608 surfacevisframes[i] = r_framecount;
1612 if (!(surf->flags & SURF_PLANEBACK) && R_NotCulledBox (surf->poly_mins, surf->poly_maxs))
1613 surfacevisframes[i] = r_framecount;
1616 if (R_NotCulledBox (surf->poly_mins, surf->poly_maxs))
1617 surfacevisframes[i] = r_framecount;
1624 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1627 mportal_t *p, *pstack[8192];
1628 msurface_t *surf, **mark, **endmark;
1630 // LordHavoc: portal-passage worldnode with PVS;
1631 // follows portals leading outward from viewleaf, does not venture
1632 // offscreen or into leafs that are not visible, faster than Quake's
1633 // RecursiveWorldNode
1635 leaf->worldnodeframe = r_framecount;
1639 if (leaf->nummarksurfaces)
1641 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1644 // make sure surfaces are only processed once
1645 if (surf->worldnodeframe != r_framecount)
1647 surf->worldnodeframe = r_framecount;
1648 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1650 if (surf->flags & SURF_PLANEBACK)
1651 surf->visframe = r_framecount;
1655 if (!(surf->flags & SURF_PLANEBACK))
1656 surf->visframe = r_framecount;
1661 // follow portals into other leafs
1662 for (p = leaf->portals;p;p = p->next)
1665 if (leaf->worldnodeframe != r_framecount)
1667 leaf->worldnodeframe = r_framecount;
1668 // FIXME: R_NotCulledBox is absolute, should be done relative
1669 if (leaf->pvsframe == r_pvsframecount && R_NotCulledBox(leaf->mins, leaf->maxs))
1671 p->visframe = r_framecount;
1672 pstack[portalstack++] = p;
1675 p = pstack[--portalstack];
1684 static void R_PortalWorldNode(entity_render_t *ent, mleaf_t *viewleaf)
1686 int c, leafstackpos, *mark, *surfacevisframes;
1687 #if WORLDNODECULLBACKFACES
1691 mleaf_t *leaf, *leafstack[8192];
1694 msurface_t *surfaces;
1695 // LordHavoc: portal-passage worldnode with PVS;
1696 // follows portals leading outward from viewleaf, does not venture
1697 // offscreen or into leafs that are not visible, faster than Quake's
1698 // RecursiveWorldNode
1699 surfaces = ent->model->surfaces;
1700 surfacevisframes = ent->model->surfacevisframes;
1701 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1702 viewleaf->worldnodeframe = r_framecount;
1703 leafstack[0] = viewleaf;
1705 while (leafstackpos)
1708 leaf = leafstack[--leafstackpos];
1709 // draw any surfaces bounding this leaf
1710 if (leaf->nummarksurfaces)
1712 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1714 #if WORLDNODECULLBACKFACES
1716 if (surfacevisframes[n] != r_framecount)
1718 surf = surfaces + n;
1719 if (PlaneDist(modelorg, surf->plane) < surf->plane->dist)
1721 if ((surf->flags & SURF_PLANEBACK))
1722 surfacevisframes[n] = r_framecount;
1726 if (!(surf->flags & SURF_PLANEBACK))
1727 surfacevisframes[n] = r_framecount;
1731 surfacevisframes[*mark++] = r_framecount;
1735 // follow portals into other leafs
1736 for (p = leaf->portals;p;p = p->next)
1738 // LordHavoc: this DotProduct hurts less than a cache miss
1739 // (which is more likely to happen if backflowing through leafs)
1740 if (DotProduct(modelorg, p->plane.normal) < (p->plane.dist + 1))
1743 if (leaf->worldnodeframe != r_framecount)
1745 leaf->worldnodeframe = r_framecount;
1746 // FIXME: R_NotCulledBox is absolute, should be done relative
1747 if (leaf->pvsframe == r_pvsframecount && R_NotCulledBox(leaf->mins, leaf->maxs))
1748 leafstack[leafstackpos++] = leaf;
1753 if (r_drawportals.integer)
1757 void R_PVSUpdate (mleaf_t *viewleaf)
1759 int i, j, l, c, bits, *surfacepvsframes, *mark;
1763 if (r_pvsviewleaf == viewleaf && r_pvsviewleafnovis == r_novis.integer)
1767 r_pvsviewleaf = viewleaf;
1768 r_pvsviewleafnovis = r_novis.integer;
1772 surfacepvsframes = cl.worldmodel->surfacepvsframes;
1773 vis = Mod_LeafPVS (viewleaf, cl.worldmodel);
1774 for (j = 0;j < cl.worldmodel->numleafs;j += 8)
1779 l = cl.worldmodel->numleafs - j;
1782 for (i = 0;i < l;i++)
1784 if (bits & (1 << i))
1786 leaf = &cl.worldmodel->leafs[j + i + 1];
1787 leaf->pvsframe = r_pvsframecount;
1788 // mark surfaces bounding this leaf as visible
1789 for (c = leaf->nummarksurfaces, mark = leaf->firstmarksurface;c;c--)
1790 surfacepvsframes[*mark++] = r_pvsframecount;
1803 void R_DrawWorld (entity_render_t *ent)
1806 viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
1807 R_PVSUpdate(viewleaf);
1810 if (r_surfaceworldnode.integer || viewleaf->contents == CONTENTS_SOLID)
1811 R_SurfaceWorldNode (ent);
1813 R_PortalWorldNode (ent, viewleaf);
1814 R_DrawSurfaces(ent, true, true);
1822 void R_DrawBrushModelSky (entity_render_t *ent)
1824 R_DrawBrushModel(ent, true, false);
1827 void R_DrawBrushModelNormal (entity_render_t *ent)
1830 R_DrawBrushModel(ent, false, true);
1833 void R_DrawBrushModelShadowVolumes (entity_render_t *ent, vec3_t relativelightorigin, float lightradius, int visiblevolume)
1837 float projectdistance, f, temp[3], lightradius2;
1839 numsurfaces = ent->model->nummodelsurfaces;
1840 lightradius2 = lightradius * lightradius;
1841 for (i = 0, surf = ent->model->surfaces + ent->model->firstmodelsurface;i < numsurfaces;i++, surf++)
1843 VectorSubtract(relativelightorigin, surf->poly_center, temp);
1844 if (DotProduct(temp, temp) < (surf->poly_radius2 + lightradius2))
1846 f = PlaneDiff(relativelightorigin, surf->plane);
1847 if (surf->flags & SURF_PLANEBACK)
1849 // draw shadows only for backfaces
1852 projectdistance = lightradius + f;
1853 if (projectdistance > 0)
1855 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1857 R_Mesh_ResizeCheck(mesh->numverts * 2);
1858 memcpy(varray_vertex, mesh->verts, mesh->numverts * sizeof(float[4]));
1859 R_Shadow_Volume(mesh->numverts, mesh->numtriangles, mesh->index, mesh->triangleneighbors, relativelightorigin, projectdistance, visiblevolume);
1867 extern cvar_t r_shadows;
1868 void R_DrawBrushModelFakeShadow (entity_render_t *ent)
1871 vec3_t relativelightorigin;
1876 if (r_shadows.integer < 2)
1879 memset(&m, 0, sizeof(m));
1880 m.blendfunc1 = GL_ONE;
1881 m.blendfunc2 = GL_ONE;
1883 R_Mesh_Matrix(&ent->matrix);
1884 GL_Color(0.0125 * r_colorscale, 0.025 * r_colorscale, 0.1 * r_colorscale, 1);
1885 for (i = 0, sl = cl.worldmodel->lights;i < cl.worldmodel->numlights;i++, sl++)
1887 if (d_lightstylevalue[sl->style] > 0
1888 && ent->maxs[0] >= sl->origin[0] - sl->cullradius
1889 && ent->mins[0] <= sl->origin[0] + sl->cullradius
1890 && ent->maxs[1] >= sl->origin[1] - sl->cullradius
1891 && ent->mins[1] <= sl->origin[1] + sl->cullradius
1892 && ent->maxs[2] >= sl->origin[2] - sl->cullradius
1893 && ent->mins[2] <= sl->origin[2] + sl->cullradius)
1895 Matrix4x4_Transform(&ent->inversematrix, sl->origin, relativelightorigin);
1896 R_DrawBrushModelShadowVolumes (ent, relativelightorigin, sl->cullradius, true);
1899 for (i = 0, rd = r_dlight;i < r_numdlights;i++, rd++)
1901 if (ent->maxs[0] >= rd->origin[0] - rd->cullradius
1902 && ent->mins[0] <= rd->origin[0] + rd->cullradius
1903 && ent->maxs[1] >= rd->origin[1] - rd->cullradius
1904 && ent->mins[1] <= rd->origin[1] + rd->cullradius
1905 && ent->maxs[2] >= rd->origin[2] - rd->cullradius
1906 && ent->mins[2] <= rd->origin[2] + rd->cullradius)
1908 Matrix4x4_Transform(&ent->inversematrix, rd->origin, relativelightorigin);
1909 R_DrawBrushModelShadowVolumes (ent, relativelightorigin, rd->cullradius, true);
1914 static void gl_surf_start(void)
1918 static void gl_surf_shutdown(void)
1922 static void gl_surf_newmap(void)
1924 // reset pvs visibility variables so it will update on first frame
1925 r_pvsframecount = 1;
1926 r_pvsviewleaf = NULL;
1927 r_pvsviewleafnovis = false;
1930 void GL_Surf_Init(void)
1933 dlightdivtable[0] = 4194304;
1934 for (i = 1;i < 32768;i++)
1935 dlightdivtable[i] = 4194304 / (i << 7);
1937 Cvar_RegisterVariable(&r_ambient);
1938 Cvar_RegisterVariable(&r_vertexsurfaces);
1939 Cvar_RegisterVariable(&r_dlightmap);
1940 Cvar_RegisterVariable(&r_drawportals);
1941 Cvar_RegisterVariable(&r_testvis);
1942 Cvar_RegisterVariable(&r_floatbuildlightmap);
1943 Cvar_RegisterVariable(&r_detailtextures);
1944 Cvar_RegisterVariable(&r_surfaceworldnode);
1946 R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);