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
24 #define MAX_LIGHTMAP_SIZE 256
26 static unsigned int intblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
27 static float floatblocklights[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*3]; // LordHavoc: *3 for colored lighting
29 static qbyte templight[MAX_LIGHTMAP_SIZE*MAX_LIGHTMAP_SIZE*4];
31 cvar_t r_ambient = {0, "r_ambient", "0"};
32 cvar_t r_vertexsurfaces = {0, "r_vertexsurfaces", "0"};
33 cvar_t r_dlightmap = {CVAR_SAVE, "r_dlightmap", "1"};
34 cvar_t r_drawportals = {0, "r_drawportals", "0"};
35 cvar_t r_testvis = {0, "r_testvis", "0"};
36 cvar_t r_floatbuildlightmap = {0, "r_floatbuildlightmap", "0"};
37 cvar_t r_detailtextures = {CVAR_SAVE, "r_detailtextures", "1"};
39 static int dlightdivtable[32768];
41 static int R_IntAddDynamicLights (msurface_t *surf)
43 int sdtable[256], lnum, td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, red, green, blue, lit, dist2, impacts, impactt, subtract;
45 float dist, impact[3], local[3];
47 // LordHavoc: use 64bit integer... shame it's not very standardized...
48 #if _MSC_VER || __BORLANDC__
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 softwareuntransform(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];
106 green = r_dlight[lnum].light[1];
107 blue = r_dlight[lnum].light[2];
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;
126 bl[0] += (red * k) >> 7;
127 bl[1] += (green * k) >> 7;
128 bl[2] += (blue * k) >> 7;
142 static int R_FloatAddDynamicLights (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 softwareuntransform(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_lightscalebit = lightscalebit;
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(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 + lightscalebit + 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_lightscalebit = lightscalebit;
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(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 + lightscalebit + 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, int icolor[8])
430 msurface_t *surf, *endsurf;
431 int sdtable[256], td, maxdist, maxdist2, maxdist3, i, s, t, smax, tmax, smax3, dist2, impacts, impactt, subtract, a, stained, cr, cg, cb, ca, ratio;
434 // LordHavoc: use 64bit integer... shame it's not very standardized...
435 #if _MSC_VER || __BORLANDC__
442 // for comparisons to minimum acceptable light
443 // compensate for 256 offset
444 maxdist = radius * radius + 256.0f;
446 // clamp radius to avoid exceeding 32768 entry division table
447 if (maxdist > 4194304)
450 subtract = (int) ((1.0f / maxdist) * 4194304.0f);
453 if (node->contents < 0)
455 ndist = PlaneDiff(origin, node->plane);
458 node = node->children[0];
463 node = node->children[1];
467 dist2 = ndist * ndist + 256.0f;
470 maxdist3 = maxdist - dist2;
472 if (node->plane->type < 3)
474 VectorCopy(origin, impact);
475 impact[node->plane->type] -= ndist;
479 impact[0] = origin[0] - node->plane->normal[0] * ndist;
480 impact[1] = origin[1] - node->plane->normal[1] * ndist;
481 impact[2] = origin[2] - node->plane->normal[2] * ndist;
484 for (surf = model->surfaces + node->firstsurface, endsurf = surf + node->numsurfaces;surf < endsurf;surf++)
486 if (surf->stainsamples)
488 smax = (surf->extents[0] >> 4) + 1;
489 tmax = (surf->extents[1] >> 4) + 1;
491 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
492 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
494 s = bound(0, impacts, smax * 16) - impacts;
495 t = bound(0, impactt, tmax * 16) - impactt;
496 i = s * s + t * t + dist2;
500 // reduce calculations
501 for (s = 0, i = impacts; s < smax; s++, i -= 16)
502 sdtable[s] = i * i + dist2;
504 // convert to 8.8 blocklights format
505 bl = surf->stainsamples;
510 for (t = 0;t < tmax;t++, i -= 16)
513 // make sure some part of it is visible on this line
516 maxdist2 = maxdist - td;
517 for (s = 0;s < smax;s++)
519 if (sdtable[s] < maxdist2)
521 k = dlightdivtable[(sdtable[s] + td) >> 7] - subtract;
524 ratio = rand() & 255;
525 ca = (((icolor[7] - icolor[3]) * ratio) >> 8) + icolor[3];
529 a = bound(0, a, 256);
530 cr = (((icolor[4] - icolor[0]) * ratio) >> 8) + icolor[0];
531 cg = (((icolor[5] - icolor[1]) * ratio) >> 8) + icolor[1];
532 cb = (((icolor[6] - icolor[2]) * ratio) >> 8) + icolor[2];
533 bl[0] = (qbyte) ((((cr - (int) bl[0]) * a) >> 8) + (int) bl[0]);
534 bl[1] = (qbyte) ((((cg - (int) bl[1]) * a) >> 8) + (int) bl[1]);
535 bl[2] = (qbyte) ((((cb - (int) bl[2]) * a) >> 8) + (int) bl[2]);
546 // force lightmap upload
548 surf->cached_dlight = true;
553 if (node->children[0]->contents >= 0)
555 if (node->children[1]->contents >= 0)
557 R_StainNode(node->children[0], model, origin, radius, icolor);
558 node = node->children[1];
563 node = node->children[0];
567 else if (node->children[1]->contents >= 0)
569 node = node->children[1];
574 void R_Stain (vec3_t origin, float radius, int cr1, int cg1, int cb1, int ca1, int cr2, int cg2, int cb2, int ca2)
577 entity_render_t *ent;
589 model = cl.worldmodel;
590 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, origin, radius, icolor);
592 // look for embedded bmodels
593 for (n = 0;n < cl_num_brushmodel_entities;n++)
595 ent = cl_brushmodel_entities[n];
597 if (model && model->name[0] == '*')
599 Mod_CheckLoaded(model);
600 if (model->type == mod_brush)
602 Matrix4x4_Transform(&ent->inversematrix, origin, org);
603 R_StainNode(model->nodes + model->hulls[0].firstclipnode, model, org, radius, icolor);
611 =============================================================
615 =============================================================
618 static void RSurf_CopyXYZ(const surfvertex_t *in, float *out, int numverts)
621 for (i = 0;i < numverts;i++, in++, out += 4)
623 VectorCopy(in->v, out);
628 static void RSurf_CopyST(const surfvertex_t *in, float *out, int numverts)
631 for (i = 0;i < numverts;i++, in++, out += 2)
638 static void RSurf_CopyUV(const surfvertex_t *in, float *out, int numverts)
641 for (i = 0;i < numverts;i++, in++, out += 2)
648 static void RSurf_CopyAB(const surfvertex_t *in, float *out, int numverts)
651 for (i = 0;i < numverts;i++, in++, out += 2)
658 static void RSurf_AddLightmapToVertexColors(const surfvertex_t *in, float *c, int numverts, const qbyte *samples, int size3, const qbyte *styles)
663 if (styles[0] != 255)
665 for (i = 0;i < numverts;i++, in++, c += 4)
667 lm = samples + in->lightmapoffset;
668 scale = d_lightstylevalue[styles[0]] * (1.0f / 32768.0f);
669 VectorMA(c, scale, lm, c);
670 if (styles[1] != 255)
673 scale = d_lightstylevalue[styles[1]] * (1.0f / 32768.0f);
674 VectorMA(c, scale, lm, c);
675 if (styles[2] != 255)
678 scale = d_lightstylevalue[styles[2]] * (1.0f / 32768.0f);
679 VectorMA(c, scale, lm, c);
680 if (styles[3] != 255)
683 scale = d_lightstylevalue[styles[3]] * (1.0f / 32768.0f);
684 VectorMA(c, scale, lm, c);
692 static void RSurf_FogColors(const float *v, float *c, float colorscale, int numverts, const float *modelorg)
698 for (i = 0;i < numverts;i++, v += 4, c += 4)
700 VectorSubtract(v, modelorg, diff);
701 f = colorscale * (1 - exp(fogdensity/DotProduct(diff, diff)));
702 VectorScale(c, f, c);
705 else if (colorscale != 1)
706 for (i = 0;i < numverts;i++, c += 4)
707 VectorScale(c, colorscale, c);
710 static void RSurf_FoggedColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
719 for (i = 0;i < numverts;i++, v += 4, c += 4)
721 VectorSubtract(v, modelorg, diff);
722 f = 1 - exp(fogdensity/DotProduct(diff, diff));
731 for (i = 0;i < numverts;i++, c += 4)
741 static void RSurf_FogPassColors(const float *v, float *c, float r, float g, float b, float a, float colorscale, int numverts, const float *modelorg)
748 for (i = 0;i < numverts;i++, v += 4, c += 4)
750 VectorSubtract(v, modelorg, diff);
751 f = exp(fogdensity/DotProduct(diff, diff));
759 static void RSurf_ScaleColors(float *c, float scale, int numverts)
763 for (i = 0;i < numverts;i++, c += 4)
764 VectorScale(c, scale, c);
767 static int RSurf_LightSeparate(const matrix4x4_t *matrix, const int *dlightbits, int numverts, const float *vert, float *color)
772 int i, l, lit = false;
775 for (l = 0;l < r_numdlights;l++)
777 if (dlightbits[l >> 5] & (1 << (l & 31)))
780 Matrix4x4_Transform(matrix, rd->origin, lightorigin);
781 for (i = 0, v = vert, c = color;i < numverts;i++, v += 4, c += 4)
783 f = VectorDistance2(v, lightorigin) + LIGHTOFFSET;
784 if (f < rd->cullradius2)
786 f = (1.0f / f) - rd->subtract;
787 VectorMA(c, f, rd->light, c);
796 // note: this untransforms lights to do the checking,
797 // and takes surf->mesh->vertex data
798 static int RSurf_LightCheck(const int *dlightbits, surfmesh_t *mesh)
804 for (l = 0;l < r_numdlights;l++)
806 if (dlightbits[l >> 5] & (1 << (l & 31)))
809 softwareuntransform(rd->origin, lightorigin);
810 for (i = 0, sv = mesh->vertex;i < mesh->numverts;i++, sv++)
811 if (VectorDistance2(sv->v, lightorigin) < rd->cullradius2)
818 static void RSurfShader_Sky(const entity_render_t *ent, const msurface_t *firstsurf)
820 const msurface_t *surf;
824 // LordHavoc: HalfLife maps have freaky skypolys...
825 if (ent->model->ishlbsp)
830 skyrendernow = false;
834 // draw depth-only polys
835 memset(&m, 0, sizeof(m));
836 m.blendfunc1 = GL_ZERO;
837 m.blendfunc2 = GL_ONE;
839 m.matrix = ent->matrix;
840 for (surf = firstsurf;surf;surf = surf->chain)
842 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
844 m.numtriangles = mesh->numtriangles;
845 m.numverts = mesh->numverts;
846 if (R_Mesh_Draw_GetBuffer(&m, false))
848 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
849 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
850 memset(m.color, 0, m.numverts * sizeof(float[4]));
857 static void RSurfShader_Water_Callback(const void *calldata1, int calldata2)
859 const entity_render_t *ent = calldata1;
860 msurface_t *surf = ent->model->surfaces + calldata2;
864 float alpha = ent->alpha * (surf->flags & SURF_DRAWNOALPHA ? 1 : r_wateralpha.value);
866 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
868 memset(&m, 0, sizeof(m));
869 if (ent->effects & EF_ADDITIVE)
871 m.blendfunc1 = GL_SRC_ALPHA;
872 m.blendfunc2 = GL_ONE;
874 else if (surf->currenttexture->fogtexture != NULL || alpha < 1)
876 m.blendfunc1 = GL_SRC_ALPHA;
877 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
881 m.blendfunc1 = GL_ONE;
882 m.blendfunc2 = GL_ZERO;
884 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
885 m.matrix = ent->matrix;
886 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
888 m.numtriangles = mesh->numtriangles;
889 m.numverts = mesh->numverts;
890 if (R_Mesh_Draw_GetBuffer(&m, true))
892 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
893 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
894 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
895 f = surf->flags & SURF_DRAWFULLBRIGHT ? 1.0f : ((surf->flags & SURF_LIGHTMAP) ? 0 : 0.5f);
896 R_FillColors(m.color, m.numverts, f, f, f, alpha);
897 if (!(surf->flags & SURF_DRAWFULLBRIGHT || ent->effects & EF_FULLBRIGHT))
899 if (surf->dlightframe == r_framecount)
900 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, m.numverts, m.vertex, m.color);
901 if (surf->flags & SURF_LIGHTMAP)
902 RSurf_AddLightmapToVertexColors(mesh->vertex, m.color, m.numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
904 RSurf_FogColors(m.vertex, m.color, m.colorscale, m.numverts, modelorg);
911 memset(&m, 0, sizeof(m));
912 m.blendfunc1 = GL_SRC_ALPHA;
913 m.blendfunc2 = GL_ONE;
914 m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
915 m.matrix = ent->matrix;
916 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
918 m.numtriangles = mesh->numtriangles;
919 m.numverts = mesh->numverts;
920 if (R_Mesh_Draw_GetBuffer(&m, false))
922 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
923 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
925 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
926 RSurf_FogPassColors(m.vertex, m.color, fogcolor[0], fogcolor[1], fogcolor[2], alpha, m.colorscale, m.numverts, modelorg);
933 static void RSurfShader_Water(const entity_render_t *ent, const msurface_t *firstsurf)
935 const msurface_t *surf;
936 for (surf = firstsurf;surf;surf = surf->chain)
938 if ((r_wateralpha.value < 1 && !(surf->flags & SURF_DRAWNOALPHA)) || ent->effects & EF_ADDITIVE || surf->currenttexture->fogtexture)
939 R_MeshQueue_AddTransparent(surf->poly_center, RSurfShader_Water_Callback, ent, surf - ent->model->surfaces);
941 R_MeshQueue_Add(RSurfShader_Water_Callback, ent, surf - ent->model->surfaces);
945 static void RSurfShader_Wall_Pass_BaseVertex(const entity_render_t *ent, const msurface_t *surf)
951 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
952 memset(&m, 0, sizeof(m));
953 if (ent->effects & EF_ADDITIVE)
955 m.transparent = true;
956 m.blendfunc1 = GL_SRC_ALPHA;
957 m.blendfunc2 = GL_ONE;
959 else if (surf->currenttexture->fogtexture != NULL || ent->alpha != 1)
961 m.transparent = true;
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);
971 base = ent->effects & EF_FULLBRIGHT ? 2.0f : r_ambient.value * (1.0f / 64.0f);
972 m.matrix = ent->matrix;
973 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
975 m.numtriangles = mesh->numtriangles;
976 m.numverts = mesh->numverts;
977 if (R_Mesh_Draw_GetBuffer(&m, true))
979 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
980 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
981 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
982 R_FillColors(m.color, m.numverts, base, base, base, ent->alpha);
983 if (!(ent->effects & EF_FULLBRIGHT))
985 if (surf->dlightframe == r_framecount)
986 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, m.numverts, m.vertex, m.color);
987 if (surf->flags & SURF_LIGHTMAP)
988 RSurf_AddLightmapToVertexColors(mesh->vertex, m.color, m.numverts, surf->samples, ((surf->extents[0]>>4)+1)*((surf->extents[1]>>4)+1)*3, surf->styles);
990 RSurf_FogColors(m.vertex, m.color, m.colorscale, m.numverts, modelorg);
996 static void RSurfShader_Wall_Pass_BaseFullbright(const entity_render_t *ent, const msurface_t *surf)
1001 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1002 memset(&m, 0, sizeof(m));
1003 if (ent->effects & EF_ADDITIVE)
1005 m.transparent = true;
1006 m.blendfunc1 = GL_SRC_ALPHA;
1007 m.blendfunc2 = GL_ONE;
1009 else if (surf->currenttexture->fogtexture != NULL || ent->alpha != 1)
1011 m.transparent = true;
1012 m.blendfunc1 = GL_SRC_ALPHA;
1013 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1017 m.blendfunc1 = GL_ONE;
1018 m.blendfunc2 = GL_ZERO;
1020 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1021 m.matrix = ent->matrix;
1022 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1024 m.numtriangles = mesh->numtriangles;
1025 m.numverts = mesh->numverts;
1026 if (R_Mesh_Draw_GetBuffer(&m, false))
1028 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1029 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1030 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1031 RSurf_FoggedColors(m.vertex, m.color, 1, 1, 1, ent->alpha, m.colorscale, m.numverts, modelorg);
1037 static void RSurfShader_Wall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
1040 rmeshbufferinfo_t m;
1042 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1043 memset(&m, 0, sizeof(m));
1044 m.transparent = ent->effects & EF_ADDITIVE || surf->currenttexture->fogtexture != NULL || ent->alpha != 1;
1045 m.blendfunc1 = GL_SRC_ALPHA;
1046 m.blendfunc2 = GL_ONE;
1047 m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
1048 m.matrix = ent->matrix;
1049 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1051 m.numtriangles = mesh->numtriangles;
1052 m.numverts = mesh->numverts;
1053 if (R_Mesh_Draw_GetBuffer(&m, false))
1055 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1056 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1057 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1058 RSurf_FoggedColors(m.vertex, m.color, 1, 1, 1, ent->alpha, m.colorscale, m.numverts, modelorg);
1064 static void RSurfShader_Wall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
1067 rmeshbufferinfo_t m;
1069 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1070 memset(&m, 0, sizeof(m));
1071 m.transparent = ent->effects & EF_ADDITIVE || surf->currenttexture->fogtexture != NULL || ent->alpha != 1;
1072 m.blendfunc1 = GL_SRC_ALPHA;
1073 m.blendfunc2 = GL_ONE;
1074 m.matrix = ent->matrix;
1075 m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
1076 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1078 m.numtriangles = mesh->numtriangles;
1079 m.numverts = mesh->numverts;
1080 if (R_Mesh_Draw_GetBuffer(&m, false))
1082 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1083 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1085 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1086 RSurf_FogPassColors(m.vertex, m.color, fogcolor[0], fogcolor[1], fogcolor[2], ent->alpha, m.colorscale, m.numverts, modelorg);
1092 static void RSurfShader_OpaqueWall_Pass_TripleTexCombine(const entity_render_t *ent, const msurface_t *surf)
1095 rmeshbufferinfo_t m;
1097 memset(&m, 0, sizeof(m));
1098 m.blendfunc1 = GL_ONE;
1099 m.blendfunc2 = GL_ZERO;
1100 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1101 m.texrgbscale[0] = 1.0f;
1102 m.tex[1] = R_GetTexture(surf->lightmaptexture);
1103 m.texrgbscale[1] = 4.0f;
1104 m.tex[2] = R_GetTexture(surf->currenttexture->detailtexture);
1105 m.texrgbscale[2] = 2.0f;
1106 m.matrix = ent->matrix;
1107 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1109 m.numtriangles = mesh->numtriangles;
1110 m.numverts = mesh->numverts;
1111 if (R_Mesh_Draw_GetBuffer(&m, false))
1113 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1114 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1115 cl = (float) (1 << lightscalebit) * m.colorscale;
1116 R_FillColors(m.color, m.numverts, cl, cl, cl, 1);
1117 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1118 RSurf_CopyUV(mesh->vertex, m.texcoords[1], m.numverts);
1119 RSurf_CopyAB(mesh->vertex, m.texcoords[2], m.numverts);
1125 static void RSurfShader_OpaqueWall_Pass_BaseMTex(const entity_render_t *ent, const msurface_t *surf)
1128 rmeshbufferinfo_t m;
1130 memset(&m, 0, sizeof(m));
1131 m.blendfunc1 = GL_ONE;
1132 m.blendfunc2 = GL_ZERO;
1133 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1134 m.tex[1] = R_GetTexture(surf->lightmaptexture);
1135 m.matrix = ent->matrix;
1136 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1138 m.numtriangles = mesh->numtriangles;
1139 m.numverts = mesh->numverts;
1140 if (R_Mesh_Draw_GetBuffer(&m, true))
1142 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1143 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1144 cl = (float) (1 << lightscalebit) * m.colorscale;
1145 R_FillColors(m.color, m.numverts, cl, cl, cl, 1);
1146 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1147 RSurf_CopyUV(mesh->vertex, m.texcoords[1], m.numverts);
1153 static void RSurfShader_OpaqueWall_Pass_BaseTexture(const entity_render_t *ent, const msurface_t *surf)
1156 rmeshbufferinfo_t m;
1158 memset(&m, 0, sizeof(m));
1159 m.blendfunc1 = GL_ONE;
1160 m.blendfunc2 = GL_ZERO;
1161 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1162 m.matrix = ent->matrix;
1163 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1165 m.numtriangles = mesh->numtriangles;
1166 m.numverts = mesh->numverts;
1167 if (R_Mesh_Draw_GetBuffer(&m, false))
1169 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1170 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1172 R_FillColors(m.color, m.numverts, cl, cl, cl, 1);
1173 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1179 static void RSurfShader_OpaqueWall_Pass_BaseLightmap(const entity_render_t *ent, const msurface_t *surf)
1182 rmeshbufferinfo_t m;
1184 memset(&m, 0, sizeof(m));
1185 m.blendfunc1 = GL_ZERO;
1186 m.blendfunc2 = GL_SRC_COLOR;
1187 m.tex[0] = R_GetTexture(surf->lightmaptexture);
1188 m.matrix = ent->matrix;
1189 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1191 m.numtriangles = mesh->numtriangles;
1192 m.numverts = mesh->numverts;
1193 if (R_Mesh_Draw_GetBuffer(&m, true))
1195 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1196 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1197 cl = (float) (1 << lightscalebit) * m.colorscale;
1198 R_FillColors(m.color, m.numverts, cl, cl, cl, 1);
1199 RSurf_CopyUV(mesh->vertex, m.texcoords[0], m.numverts);
1205 static void RSurfShader_OpaqueWall_Pass_Light(const entity_render_t *ent, const msurface_t *surf)
1208 rmeshbufferinfo_t m;
1210 if (surf->dlightframe != r_framecount)
1212 if (ent->effects & EF_FULLBRIGHT)
1215 memset(&m, 0, sizeof(m));
1216 m.blendfunc1 = GL_SRC_ALPHA;
1217 m.blendfunc2 = GL_ONE;
1218 m.tex[0] = R_GetTexture(surf->currenttexture->texture);
1219 m.matrix = ent->matrix;
1220 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1222 if (RSurf_LightCheck(surf->dlightbits, mesh))
1224 m.numtriangles = mesh->numtriangles;
1225 m.numverts = mesh->numverts;
1226 if (R_Mesh_Draw_GetBuffer(&m, true))
1228 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1229 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1230 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1231 R_FillColors(m.color, m.numverts, 0, 0, 0, 1);
1232 RSurf_LightSeparate(&ent->inversematrix, surf->dlightbits, m.numverts, m.vertex, m.color);
1233 RSurf_ScaleColors(m.color, m.colorscale, m.numverts);
1240 static void RSurfShader_OpaqueWall_Pass_Fog(const entity_render_t *ent, const msurface_t *surf)
1243 rmeshbufferinfo_t m;
1245 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1246 memset(&m, 0, sizeof(m));
1247 m.blendfunc1 = GL_SRC_ALPHA;
1248 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1249 m.tex[0] = R_GetTexture(surf->currenttexture->fogtexture);
1250 m.matrix = ent->matrix;
1251 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1253 m.numtriangles = mesh->numtriangles;
1254 m.numverts = mesh->numverts;
1255 if (R_Mesh_Draw_GetBuffer(&m, false))
1257 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1258 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1260 RSurf_CopyST(mesh->vertex, m.texcoords[0], m.numverts);
1261 RSurf_FogPassColors(m.vertex, m.color, fogcolor[0], fogcolor[1], fogcolor[2], 1, m.colorscale, m.numverts, modelorg);
1267 static void RSurfShader_OpaqueWall_Pass_BaseDetail(const entity_render_t *ent, const msurface_t *surf)
1270 rmeshbufferinfo_t m;
1271 memset(&m, 0, sizeof(m));
1272 m.blendfunc1 = GL_DST_COLOR;
1273 m.blendfunc2 = GL_SRC_COLOR;
1274 m.tex[0] = R_GetTexture(surf->currenttexture->detailtexture);
1275 m.matrix = ent->matrix;
1276 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1278 m.numtriangles = mesh->numtriangles;
1279 m.numverts = mesh->numverts;
1280 if (R_Mesh_Draw_GetBuffer(&m, false))
1282 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1283 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1284 R_FillColors(m.color, m.numverts, 1, 1, 1, 1);
1285 RSurf_CopyAB(mesh->vertex, m.texcoords[0], m.numverts);
1291 static void RSurfShader_OpaqueWall_Pass_Glow(const entity_render_t *ent, const msurface_t *surf)
1294 rmeshbufferinfo_t m;
1295 memset(&m, 0, sizeof(m));
1296 m.blendfunc1 = GL_SRC_ALPHA;
1297 m.blendfunc2 = GL_ONE;
1298 m.tex[0] = R_GetTexture(surf->currenttexture->glowtexture);
1299 m.matrix = ent->matrix;
1300 for (mesh = surf->mesh;mesh;mesh = mesh->chain)
1302 m.numtriangles = mesh->numtriangles;
1303 m.numverts = mesh->numverts;
1304 if (R_Mesh_Draw_GetBuffer(&m, false))
1306 memcpy(m.index, mesh->index, m.numtriangles * sizeof(int[3]));
1307 RSurf_CopyXYZ(mesh->vertex, m.vertex, m.numverts);
1308 R_FillColors(m.color, m.numverts, m.colorscale, m.colorscale, m.colorscale, 1);
1309 RSurf_CopyAB(mesh->vertex, m.texcoords[0], m.numverts);
1315 static void RSurfShader_Wall_Fullbright(const entity_render_t *ent, const msurface_t *firstsurf)
1317 const msurface_t *surf;
1318 for (surf = firstsurf;surf;surf = surf->chain)
1321 RSurfShader_Wall_Pass_BaseFullbright(ent, surf);
1323 for (surf = firstsurf;surf;surf = surf->chain)
1324 if (surf->currenttexture->glowtexture)
1325 RSurfShader_Wall_Pass_Glow(ent, surf);
1327 for (surf = firstsurf;surf;surf = surf->chain)
1328 RSurfShader_Wall_Pass_Fog(ent, surf);
1331 static void RSurfShader_Wall_Vertex(const entity_render_t *ent, const msurface_t *firstsurf)
1333 const msurface_t *surf;
1334 for (surf = firstsurf;surf;surf = surf->chain)
1337 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1339 for (surf = firstsurf;surf;surf = surf->chain)
1340 if (surf->currenttexture->glowtexture)
1341 RSurfShader_Wall_Pass_Glow(ent, surf);
1343 for (surf = firstsurf;surf;surf = surf->chain)
1344 RSurfShader_Wall_Pass_Fog(ent, surf);
1347 static void RSurfShader_Wall_Lightmap(const entity_render_t *ent, const msurface_t *firstsurf)
1349 const msurface_t *surf;
1350 if (r_vertexsurfaces.integer || firstsurf->currenttexture->fogtexture != NULL || ent->alpha != 1 || ent->effects & EF_ADDITIVE)
1352 for (surf = firstsurf;surf;surf = surf->chain)
1355 RSurfShader_Wall_Pass_BaseVertex(ent, surf);
1357 for (surf = firstsurf;surf;surf = surf->chain)
1358 if (surf->currenttexture->glowtexture)
1359 RSurfShader_Wall_Pass_Glow(ent, surf);
1361 for (surf = firstsurf;surf;surf = surf->chain)
1362 RSurfShader_Wall_Pass_Fog(ent, surf);
1366 if (r_textureunits.integer >= 2)
1368 if (r_textureunits.integer >= 3 && gl_combine.integer && r_detailtextures.integer)
1370 for (surf = firstsurf;surf;surf = surf->chain)
1373 RSurfShader_OpaqueWall_Pass_TripleTexCombine(ent, surf);
1378 for (surf = firstsurf;surf;surf = surf->chain)
1381 RSurfShader_OpaqueWall_Pass_BaseMTex(ent, surf);
1383 if (r_detailtextures.integer)
1384 for (surf = firstsurf;surf;surf = surf->chain)
1385 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, surf);
1390 for (surf = firstsurf;surf;surf = surf->chain)
1393 RSurfShader_OpaqueWall_Pass_BaseTexture(ent, surf);
1395 for (surf = firstsurf;surf;surf = surf->chain)
1396 RSurfShader_OpaqueWall_Pass_BaseLightmap(ent, surf);
1397 if (r_detailtextures.integer)
1398 for (surf = firstsurf;surf;surf = surf->chain)
1399 RSurfShader_OpaqueWall_Pass_BaseDetail(ent, surf);
1401 if (!r_dlightmap.integer)
1402 for (surf = firstsurf;surf;surf = surf->chain)
1403 if (surf->dlightframe == r_framecount)
1404 RSurfShader_OpaqueWall_Pass_Light(ent, surf);
1405 for (surf = firstsurf;surf;surf = surf->chain)
1406 if (surf->currenttexture->glowtexture)
1407 RSurfShader_OpaqueWall_Pass_Glow(ent, surf);
1409 for (surf = firstsurf;surf;surf = surf->chain)
1410 RSurfShader_OpaqueWall_Pass_Fog(ent, surf);
1415 =============================================================
1419 =============================================================
1422 static void R_SolidWorldNode (entity_render_t *ent)
1424 if (r_viewleaf->contents != CONTENTS_SOLID)
1427 mportal_t *p, *pstack[8192];
1428 msurface_t *surf, **mark, **endmark;
1430 // LordHavoc: portal-passage worldnode; follows portals leading
1431 // outward from viewleaf, if a portal leads offscreen it is not
1432 // followed, in indoor maps this can often cull a great deal of
1433 // geometry away when pvs data is not present (useful with pvs as well)
1436 leaf->worldnodeframe = r_framecount;
1441 leaf->visframe = r_framecount;
1443 if (leaf->nummarksurfaces)
1445 mark = leaf->firstmarksurface;
1446 endmark = mark + leaf->nummarksurfaces;
1450 // make sure surfaces are only processed once
1451 if (surf->worldnodeframe == r_framecount)
1453 surf->worldnodeframe = r_framecount;
1454 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1456 if (surf->flags & SURF_PLANEBACK)
1457 surf->visframe = r_framecount;
1461 if (!(surf->flags & SURF_PLANEBACK))
1462 surf->visframe = r_framecount;
1465 while (mark < endmark);
1468 // follow portals into other leafs
1470 for (;p;p = p->next)
1472 if (DotProduct(r_origin, p->plane.normal) < p->plane.dist)
1475 if (leaf->worldnodeframe != r_framecount)
1477 leaf->worldnodeframe = r_framecount;
1478 if (leaf->contents != CONTENTS_SOLID)
1480 if (R_NotCulledBox(leaf->mins, leaf->maxs))
1482 p->visframe = r_framecount;
1483 pstack[portalstack++] = p;
1487 p = pstack[--portalstack];
1499 mnode_t *nodestack[8192], *node = cl.worldmodel->nodes;
1500 int nodestackpos = 0;
1501 // LordHavoc: recursive descending worldnode; if portals are not
1502 // available, this is a good last resort, can cull large amounts of
1503 // geometry, but is more time consuming than portal-passage and renders
1504 // things behind walls
1507 if (R_NotCulledBox(node->mins, node->maxs))
1509 if (node->numsurfaces)
1511 msurface_t *surf = cl.worldmodel->surfaces + node->firstsurface, *surfend = surf + node->numsurfaces;
1512 if (PlaneDiff (r_origin, node->plane) < 0)
1514 for (;surf < surfend;surf++)
1516 if (surf->flags & SURF_PLANEBACK)
1517 surf->visframe = r_framecount;
1522 for (;surf < surfend;surf++)
1524 if (!(surf->flags & SURF_PLANEBACK))
1525 surf->visframe = r_framecount;
1530 // recurse down the children
1531 if (node->children[0]->contents >= 0)
1533 if (node->children[1]->contents >= 0)
1535 if (nodestackpos < 8192)
1536 nodestack[nodestackpos++] = node->children[1];
1537 node = node->children[0];
1541 ((mleaf_t *)node->children[1])->visframe = r_framecount;
1542 node = node->children[0];
1547 ((mleaf_t *)node->children[0])->visframe = r_framecount;
1548 if (node->children[1]->contents >= 0)
1550 node = node->children[1];
1553 else if (nodestackpos > 0)
1555 ((mleaf_t *)node->children[1])->visframe = r_framecount;
1556 node = nodestack[--nodestackpos];
1561 else if (nodestackpos > 0)
1563 node = nodestack[--nodestackpos];
1569 static int r_portalframecount = 0;
1571 static void R_PVSWorldNode()
1574 mportal_t *p, *pstack[8192];
1575 msurface_t *surf, **mark, **endmark;
1579 worldvis = Mod_LeafPVS (r_viewleaf, cl.worldmodel);
1582 leaf->worldnodeframe = r_framecount;
1587 leaf->visframe = r_framecount;
1589 if (leaf->nummarksurfaces)
1591 mark = leaf->firstmarksurface;
1592 endmark = mark + leaf->nummarksurfaces;
1596 // make sure surfaces are only processed once
1597 if (surf->worldnodeframe == r_framecount)
1599 surf->worldnodeframe = r_framecount;
1600 if (PlaneDist(r_origin, surf->plane) < surf->plane->dist)
1602 if (surf->flags & SURF_PLANEBACK)
1603 surf->visframe = r_framecount;
1607 if (!(surf->flags & SURF_PLANEBACK))
1608 surf->visframe = r_framecount;
1611 while (mark < endmark);
1614 // follow portals into other leafs
1615 for (p = leaf->portals;p;p = p->next)
1617 if (DotProduct(r_origin, p->plane.normal) < p->plane.dist)
1620 if (leaf->worldnodeframe != r_framecount)
1622 leaf->worldnodeframe = r_framecount;
1623 if (leaf->contents != CONTENTS_SOLID)
1625 i = (leaf - cl.worldmodel->leafs) - 1;
1626 if (worldvis[i>>3] & (1<<(i&7)))
1628 if (R_NotCulledBox(leaf->mins, leaf->maxs))
1630 pstack[portalstack++] = p;
1634 p = pstack[--portalstack];
1646 Cshader_t Cshader_wall_vertex = {{NULL, RSurfShader_Wall_Vertex}, NULL};
1647 Cshader_t Cshader_wall_lightmap = {{NULL, RSurfShader_Wall_Lightmap}, NULL};
1648 Cshader_t Cshader_wall_fullbright = {{NULL, RSurfShader_Wall_Fullbright}, NULL};
1649 Cshader_t Cshader_water = {{NULL, RSurfShader_Water}, NULL};
1650 Cshader_t Cshader_sky = {{RSurfShader_Sky, NULL}, NULL};
1652 int Cshader_count = 5;
1653 Cshader_t *Cshaders[5] =
1655 &Cshader_wall_vertex,
1656 &Cshader_wall_lightmap,
1657 &Cshader_wall_fullbright,
1662 void R_PrepareSurfaces(entity_render_t *ent)
1664 int i, alttextures, texframe, framecount;
1669 for (i = 0;i < Cshader_count;i++)
1670 Cshaders[i]->chain = NULL;
1673 alttextures = ent->frame != 0;
1674 texframe = (int)(cl.time * 5.0f);
1676 for (i = 0;i < model->nummodelsurfaces;i++)
1678 surf = model->modelsortedsurfaces[i];
1679 if (surf->visframe == r_framecount)
1681 if (surf->insertframe != r_framecount)
1683 surf->insertframe = r_framecount;
1685 t = surf->texinfo->texture;
1688 framecount = t->anim_total[alttextures];
1689 if (framecount >= 2)
1690 surf->currenttexture = t->anim_frames[alttextures][texframe % framecount];
1692 surf->currenttexture = t->anim_frames[alttextures][0];
1695 surf->currenttexture = t;
1698 surf->chain = surf->shader->chain;
1699 surf->shader->chain = surf;
1704 void R_DrawSurfaces (entity_render_t *ent, int type)
1709 for (i = 0;i < Cshader_count;i++)
1711 shader = Cshaders[i];
1712 if (shader->chain && shader->shaderfunc[type])
1713 shader->shaderfunc[type](ent, shader->chain);
1717 void R_DrawPortals(entity_render_t *ent)
1721 mportal_t *portal, *endportal;
1722 rmeshbufferinfo_t m;
1723 drawportals = r_drawportals.integer;
1725 if (drawportals < 1)
1728 for (portal = cl.worldmodel->portals, endportal = portal + cl.worldmodel->numportals;portal < endportal;portal++)
1730 if (portal->visframe == r_portalframecount)
1732 memset(&m, 0, sizeof(m));
1733 m.transparent = true;
1734 m.blendfunc1 = GL_SRC_ALPHA;
1735 m.blendfunc2 = GL_ONE_MINUS_SRC_ALPHA;
1736 m.numverts = portal->numpoints;
1737 m.numtriangles = portal->numpoints - 2;
1738 Matrix4x4_CreateIdentity(&m.matrix);
1739 if (R_Mesh_Draw_GetBuffer(&m, false))
1741 for (i = 0;i < m.numtriangles;i++)
1743 m.index[i * 3 + 0] = 0;
1744 m.index[i * 3 + 1] = i + 1;
1745 m.index[i * 3 + 2] = i + 2;
1747 i = portal - cl.worldmodel->portals;
1748 R_FillColors(m.color, m.numverts,
1749 ((i & 0x0007) >> 0) * (1.0f / 7.0f) * m.colorscale,
1750 ((i & 0x0038) >> 3) * (1.0f / 7.0f) * m.colorscale,
1751 ((i & 0x01C0) >> 6) * (1.0f / 7.0f) * m.colorscale,
1753 if (PlaneDiff(r_origin, (&portal->plane)) > 0)
1755 for (i = portal->numpoints - 1, v = m.vertex;i >= 0;i--, v += 4)
1756 VectorCopy(portal->points[i].position, v);
1759 for (i = 0, v = m.vertex;i < portal->numpoints;i++, v += 4)
1760 VectorCopy(portal->points[i].position, v);
1767 void R_SetupForBModelRendering(entity_render_t *ent)
1774 // because bmodels can be reused, we have to decide which things to render
1775 // from scratch every time
1779 Matrix4x4_Transform(&ent->inversematrix, r_origin, modelorg);
1780 for (i = 0;i < model->nummodelsurfaces;i++)
1782 surf = model->modelsortedsurfaces[i];
1783 if (((surf->flags & SURF_PLANEBACK) == 0) == (PlaneDiff(modelorg, surf->plane) >= 0))
1784 surf->visframe = r_framecount;
1786 surf->visframe = -1;
1787 surf->worldnodeframe = -1;
1788 surf->lightframe = -1;
1789 surf->dlightframe = -1;
1790 surf->insertframe = -1;
1794 void R_SetupForWorldRendering(entity_render_t *ent)
1796 // there is only one instance of the world, but it can be rendered in
1800 static void R_SurfMarkLights (entity_render_t *ent)
1805 if (r_dynamic.integer)
1808 if (!r_vertexsurfaces.integer)
1810 for (i = 0;i < ent->model->nummodelsurfaces;i++)
1812 surf = ent->model->modelsortedsurfaces[i];
1813 if (surf->visframe == r_framecount && surf->lightmaptexture != NULL)
1815 if (surf->cached_dlight
1816 || surf->cached_ambient != r_ambient.value
1817 || surf->cached_lightscalebit != lightscalebit)
1818 R_BuildLightMap(ent, surf, false); // base lighting changed
1819 else if (r_dynamic.integer)
1821 if (surf->styles[0] != 255 && (d_lightstylevalue[surf->styles[0]] != surf->cached_light[0]
1822 || (surf->styles[1] != 255 && (d_lightstylevalue[surf->styles[1]] != surf->cached_light[1]
1823 || (surf->styles[2] != 255 && (d_lightstylevalue[surf->styles[2]] != surf->cached_light[2]
1824 || (surf->styles[3] != 255 && (d_lightstylevalue[surf->styles[3]] != surf->cached_light[3]))))))))
1825 R_BuildLightMap(ent, surf, false); // base lighting changed
1826 else if (surf->dlightframe == r_framecount && r_dlightmap.integer)
1827 R_BuildLightMap(ent, surf, true); // only dlights
1834 void R_MarkWorldLights(entity_render_t *ent)
1836 R_SetupForWorldRendering(ent);
1837 R_SurfMarkLights(ent);
1845 void R_DrawWorld (entity_render_t *ent)
1847 R_SetupForWorldRendering(ent);
1849 if (r_viewleaf->contents == CONTENTS_SOLID || r_novis.integer || r_viewleaf->compressed_vis == NULL)
1850 R_SolidWorldNode (ent);
1852 R_PVSWorldNode (ent);
1860 void R_DrawBrushModelSky (entity_render_t *ent)
1862 R_SetupForBModelRendering(ent);
1864 R_PrepareSurfaces(ent);
1865 R_DrawSurfaces(ent, SHADERSTAGE_SKY);
1868 void R_DrawBrushModelNormal (entity_render_t *ent)
1872 // have to flush queue because of possible lightmap reuse
1875 R_SetupForBModelRendering(ent);
1877 R_SurfMarkLights(ent);
1879 R_PrepareSurfaces(ent);
1881 if (!skyrendermasked)
1882 R_DrawSurfaces(ent, SHADERSTAGE_SKY);
1883 R_DrawSurfaces(ent, SHADERSTAGE_NORMAL);
1886 static void gl_surf_start(void)
1890 static void gl_surf_shutdown(void)
1894 static void gl_surf_newmap(void)
1898 void GL_Surf_Init(void)
1901 dlightdivtable[0] = 4194304;
1902 for (i = 1;i < 32768;i++)
1903 dlightdivtable[i] = 4194304 / (i << 7);
1905 Cvar_RegisterVariable(&r_ambient);
1906 Cvar_RegisterVariable(&r_vertexsurfaces);
1907 Cvar_RegisterVariable(&r_dlightmap);
1908 Cvar_RegisterVariable(&r_drawportals);
1909 Cvar_RegisterVariable(&r_testvis);
1910 Cvar_RegisterVariable(&r_floatbuildlightmap);
1911 Cvar_RegisterVariable(&r_detailtextures);
1913 R_RegisterModule("GL_Surf", gl_surf_start, gl_surf_shutdown, gl_surf_newmap);