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.
23 #include "cl_collision.h"
25 rdlight_t r_dlight[MAX_DLIGHTS];
28 cvar_t r_lightmodels = {CVAR_SAVE, "r_lightmodels", "1"};
29 cvar_t r_vismarklights = {0, "r_vismarklights", "1"};
30 //cvar_t r_lightmodelhardness = {CVAR_SAVE, "r_lightmodelhardness", "1"};
32 static rtexture_t *lightcorona;
33 static rtexturepool_t *lighttexturepool;
35 void r_light_start(void)
39 qbyte pixels[32][32][4];
40 lighttexturepool = R_AllocTexturePool();
41 for (y = 0;y < 32;y++)
43 dy = (y - 15.5f) * (1.0f / 16.0f);
44 for (x = 0;x < 32;x++)
46 dx = (x - 15.5f) * (1.0f / 16.0f);
47 a = ((1.0f / (dx * dx + dy * dy + 0.2f)) - (1.0f / (1.0f + 0.2))) * 64.0f / (1.0f / (1.0f + 0.2));
49 pixels[y][x][0] = 255;
50 pixels[y][x][1] = 255;
51 pixels[y][x][2] = 255;
55 lightcorona = R_LoadTexture (lighttexturepool, "lightcorona", 32, 32, &pixels[0][0][0], TEXTYPE_RGBA, TEXF_PRECACHE | TEXF_ALPHA);
58 void r_light_shutdown(void)
60 lighttexturepool = NULL;
64 void r_light_newmap(void)
68 void R_Light_Init(void)
70 Cvar_RegisterVariable(&r_lightmodels);
71 //Cvar_RegisterVariable(&r_lightmodelhardness);
72 Cvar_RegisterVariable(&r_vismarklights);
73 R_RegisterModule("R_Light", r_light_start, r_light_shutdown, r_light_newmap);
81 void R_AnimateLight (void)
87 // 'm' is normal light, 'a' is no light, 'z' is double bright
88 i = (int)(cl.time * 10);
89 for (j = 0;j < MAX_LIGHTSTYLES;j++)
91 if (!cl_lightstyle[j].length)
93 d_lightstylevalue[j] = 256;
96 k = i % cl_lightstyle[j].length;
97 k = cl_lightstyle[j].map[k] - 'a';
99 d_lightstylevalue[j] = k;
104 void R_BuildLightList(void)
113 if (!r_dynamic.integer)
116 for (i = 0;i < MAX_DLIGHTS;i++)
121 rd = &r_dlight[r_numdlights++];
122 VectorCopy(cd->origin, rd->origin);
123 VectorScale(cd->color, cd->radius * 128.0f, rd->light);
124 rd->cullradius = (1.0f / 128.0f) * sqrt(DotProduct(rd->light, rd->light));
125 // clamp radius to avoid overflowing division table in lightmap code
126 if (rd->cullradius > 2048.0f)
127 rd->cullradius = 2048.0f;
128 rd->cullradius2 = rd->cullradius * rd->cullradius;
129 rd->lightsubtract = 1.0f / rd->cullradius2;
132 c_dlights++; // count every dlight in use
136 static int coronapolyindex[6] = {0, 1, 2, 0, 2, 3};
138 void R_DrawCoronas(void)
142 float tvxyz[4][4], tvst[4][2], scale, viewdist, diff[3], dist;
144 memset(&m, 0, sizeof(m));
145 m.transparent = false;
146 m.blendfunc1 = GL_SRC_ALPHA;
147 m.blendfunc2 = GL_ONE;
148 m.depthdisable = true; // magic
151 m.index = coronapolyindex;
152 m.vertex = &tvxyz[0][0];
153 m.vertexstep = sizeof(float[4]);
154 m.tex[0] = R_GetTexture(lightcorona);
155 m.texcoords[0] = &tvst[0][0];
156 m.texcoordstep[0] = sizeof(float[2]);
165 viewdist = DotProduct(r_origin, vpn);
166 for (i = 0;i < r_numdlights;i++)
169 dist = (DotProduct(rd->origin, vpn) - viewdist);
172 // trace to a point just barely closer to the eye
173 VectorSubtract(rd->origin, vpn, diff);
174 if (CL_TraceLine(r_origin, diff, NULL, NULL, 0, true) == 1)
176 scale = 1.0f / 262144.0f;
177 //scale = 64.0f / (DotProduct(diff,diff) + 1024.0f);
178 m.cr = rd->light[0] * scale;
179 m.cg = rd->light[1] * scale;
180 m.cb = rd->light[2] * scale;
184 VectorSubtract(rd->origin, r_origin, diff);
185 m.ca *= 1 - exp(fogdensity/DotProduct(diff,diff));
187 scale = rd->cullradius * 0.25f;
188 tvxyz[0][0] = rd->origin[0] - vright[0] * scale - vup[0] * scale;
189 tvxyz[0][1] = rd->origin[1] - vright[1] * scale - vup[1] * scale;
190 tvxyz[0][2] = rd->origin[2] - vright[2] * scale - vup[2] * scale;
191 tvxyz[1][0] = rd->origin[0] - vright[0] * scale + vup[0] * scale;
192 tvxyz[1][1] = rd->origin[1] - vright[1] * scale + vup[1] * scale;
193 tvxyz[1][2] = rd->origin[2] - vright[2] * scale + vup[2] * scale;
194 tvxyz[2][0] = rd->origin[0] + vright[0] * scale + vup[0] * scale;
195 tvxyz[2][1] = rd->origin[1] + vright[1] * scale + vup[1] * scale;
196 tvxyz[2][2] = rd->origin[2] + vright[2] * scale + vup[2] * scale;
197 tvxyz[3][0] = rd->origin[0] + vright[0] * scale - vup[0] * scale;
198 tvxyz[3][1] = rd->origin[1] + vright[1] * scale - vup[1] * scale;
199 tvxyz[3][2] = rd->origin[2] + vright[2] * scale - vup[2] * scale;
207 =============================================================================
211 =============================================================================
219 static void R_OldMarkLights (vec3_t lightorigin, rdlight_t *rd, int bit, int bitindex, mnode_t *node)
221 float ndist, maxdist;
226 if (!r_dynamic.integer)
229 // for comparisons to minimum acceptable light
230 maxdist = rd->cullradius2;
233 if (node->contents < 0)
235 if (node->contents != CONTENTS_SOLID)
237 leaf = (mleaf_t *)node;
238 if (leaf->dlightframe != r_framecount) // not dynamic until now
240 leaf->dlightbits[0] = leaf->dlightbits[1] = leaf->dlightbits[2] = leaf->dlightbits[3] = leaf->dlightbits[4] = leaf->dlightbits[5] = leaf->dlightbits[6] = leaf->dlightbits[7] = 0;
241 leaf->dlightframe = r_framecount;
243 leaf->dlightbits[bitindex] |= bit;
248 ndist = PlaneDiff(lightorigin, node->plane);
250 if (ndist > rd->cullradius)
252 node = node->children[0];
255 if (ndist < -rd->cullradius)
257 node = node->children[1];
262 surf = currentrenderentity->model->surfaces + node->firstsurface;
263 for (i=0 ; i<node->numsurfaces ; i++, surf++)
265 int d, impacts, impactt;
266 float dist, dist2, impact[3];
267 if (surf->visframe != r_framecount)
270 if (surf->flags & SURF_PLANEBACK)
273 if (dist < -0.25f && !(surf->flags & SURF_LIGHTBOTHSIDES))
277 if (dist2 >= maxdist)
280 impact[0] = rd->origin[0] - surf->plane->normal[0] * dist;
281 impact[1] = rd->origin[1] - surf->plane->normal[1] * dist;
282 impact[2] = rd->origin[2] - surf->plane->normal[2] * dist;
284 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
286 d = bound(0, impacts, surf->extents[0] + 16) - impacts;
291 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
293 d = bound(0, impactt, surf->extents[1] + 16) - impactt;
300 d = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
305 if (dist2 >= maxdist)
310 d -= surf->extents[0] + 16;
314 if (dist2 >= maxdist)
319 d = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
324 if (dist2 >= maxdist)
329 d -= surf->extents[1] + 16;
333 if (dist2 >= maxdist)
339 if (surf->dlightframe != r_framecount) // not dynamic until now
341 surf->dlightbits[0] = surf->dlightbits[1] = surf->dlightbits[2] = surf->dlightbits[3] = surf->dlightbits[4] = surf->dlightbits[5] = surf->dlightbits[6] = surf->dlightbits[7] = 0;
342 surf->dlightframe = r_framecount;
344 surf->dlightbits[bitindex] |= bit;
347 if (((surf->flags & SURF_PLANEBACK) == 0) == ((PlaneDist(lightorigin, surf->plane)) >= surf->plane->dist))
349 if (surf->dlightframe != r_framecount) // not dynamic until now
351 surf->dlightbits[0] = surf->dlightbits[1] = surf->dlightbits[2] = surf->dlightbits[3] = surf->dlightbits[4] = surf->dlightbits[5] = surf->dlightbits[6] = surf->dlightbits[7] = 0;
352 surf->dlightframe = r_framecount;
354 surf->dlightbits[bitindex] |= bit;
359 if (node->children[0]->contents >= 0)
361 if (node->children[1]->contents >= 0)
363 R_OldMarkLights (lightorigin, rd, bit, bitindex, node->children[0]);
364 node = node->children[1];
369 node = node->children[0];
373 else if (node->children[1]->contents >= 0)
375 node = node->children[1];
381 static void R_NoVisMarkLights (rdlight_t *rd, int bit, int bitindex)
384 softwareuntransform(rd->origin, lightorigin);
386 R_OldMarkLights(lightorigin, rd, bit, bitindex, currentrenderentity->model->nodes + currentrenderentity->model->hulls[0].firstclipnode);
390 static void R_VisMarkLights (rdlight_t *rd, int bit, int bitindex)
392 static int lightframe = 0;
396 int i, k, m, c, leafnum;
397 msurface_t *surf, **mark;
401 float low[3], high[3], dist, maxdist;
403 if (!r_dynamic.integer)
406 model = currentrenderentity->model;
407 softwareuntransform(rd->origin, lightorigin);
409 if (!r_vismarklights.integer)
411 R_OldMarkLights(lightorigin, rd, bit, bitindex, model->nodes + model->hulls[0].firstclipnode);
415 pvsleaf = Mod_PointInLeaf (lightorigin, model);
418 Con_Printf("R_VisMarkLights: NULL leaf??\n");
419 R_OldMarkLights(lightorigin, rd, bit, bitindex, model->nodes + model->hulls[0].firstclipnode);
423 in = pvsleaf->compressed_vis;
426 // no vis info, so make all visible
427 R_OldMarkLights(lightorigin, rd, bit, bitindex, model->nodes + model->hulls[0].firstclipnode);
433 low[0] = lightorigin[0] - rd->cullradius;low[1] = lightorigin[1] - rd->cullradius;low[2] = lightorigin[2] - rd->cullradius;
434 high[0] = lightorigin[0] + rd->cullradius;high[1] = lightorigin[1] + rd->cullradius;high[2] = lightorigin[2] + rd->cullradius;
436 // for comparisons to minimum acceptable light
437 maxdist = rd->cullradius2;
439 row = (model->numleafs+7)>>3;
447 for (i = 0;i < 8;i++)
451 // warning to the clumsy: numleafs is one less than it should be, it only counts leafs with vis bits (skips leaf 0)
452 leafnum = (k << 3)+i+1;
453 if (leafnum > model->numleafs)
455 leaf = &model->leafs[leafnum];
456 if (leaf->visframe != r_framecount
457 || leaf->contents == CONTENTS_SOLID
458 || leaf->mins[0] > high[0] || leaf->maxs[0] < low[0]
459 || leaf->mins[1] > high[1] || leaf->maxs[1] < low[1]
460 || leaf->mins[2] > high[2] || leaf->maxs[2] < low[2])
462 if (leaf->dlightframe != r_framecount)
464 // not dynamic until now
465 leaf->dlightbits[0] = leaf->dlightbits[1] = leaf->dlightbits[2] = leaf->dlightbits[3] = leaf->dlightbits[4] = leaf->dlightbits[5] = leaf->dlightbits[6] = leaf->dlightbits[7] = 0;
466 leaf->dlightframe = r_framecount;
468 leaf->dlightbits[bitindex] |= bit;
469 if ((m = leaf->nummarksurfaces))
471 mark = leaf->firstmarksurface;
475 // if not visible in current frame, or already marked because it was in another leaf we passed, skip
476 if (surf->lightframe == lightframe)
478 surf->lightframe = lightframe;
479 if (surf->visframe != r_framecount)
481 dist = PlaneDiff(lightorigin, surf->plane);
482 if (surf->flags & SURF_PLANEBACK)
484 // LordHavoc: make sure it is infront of the surface and not too far away
485 if (dist < rd->cullradius && (dist > -0.25f || ((surf->flags & SURF_LIGHTBOTHSIDES) && dist > -rd->cullradius)))
488 int impacts, impactt;
489 float dist2, impact[3];
493 impact[0] = rd->origin[0] - surf->plane->normal[0] * dist;
494 impact[1] = rd->origin[1] - surf->plane->normal[1] * dist;
495 impact[2] = rd->origin[2] - surf->plane->normal[2] * dist;
498 d = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
507 d -= surf->extents[0];
516 d = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
525 d -= surf->extents[1];
536 impacts = DotProduct (impact, surf->texinfo->vecs[0]) + surf->texinfo->vecs[0][3] - surf->texturemins[0];
537 d = bound(0, impacts, surf->extents[0] + 16) - impacts;
542 impactt = DotProduct (impact, surf->texinfo->vecs[1]) + surf->texinfo->vecs[1][3] - surf->texturemins[1];
543 d = bound(0, impactt, surf->extents[1] + 16) - impactt;
550 if (surf->dlightframe != r_framecount) // not dynamic until now
552 surf->dlightbits[0] = surf->dlightbits[1] = surf->dlightbits[2] = surf->dlightbits[3] = surf->dlightbits[4] = surf->dlightbits[5] = surf->dlightbits[6] = surf->dlightbits[7] = 0;
553 surf->dlightframe = r_framecount;
555 surf->dlightbits[bitindex] |= bit;
570 void R_MarkLights(void)
573 for (i = 0;i < r_numdlights;i++)
574 R_VisMarkLights (r_dlight + i, 1 << (i & 31), i >> 5);
578 =============================================================================
582 =============================================================================
585 static int RecursiveLightPoint (vec3_t color, mnode_t *node, float x, float y, float startz, float endz)
587 int side, distz = endz - startz;
592 if (node->contents < 0)
593 return false; // didn't hit anything
595 switch (node->plane->type)
598 node = node->children[x < node->plane->dist];
601 node = node->children[y < node->plane->dist];
604 side = startz < node->plane->dist;
605 if ((endz < node->plane->dist) == side)
607 node = node->children[side];
610 // found an intersection
611 // mid = startz + (endz - startz) * (startz - node->plane->dist) / (startz - endz);
612 // mid = startz + distz * (startz - node->plane->dist) / (-distz);
613 // mid = startz + (-(startz - node->plane->dist));
614 // mid = startz - (startz - node->plane->dist);
615 // mid = startz + node->plane->dist - startz;
616 mid = node->plane->dist;
619 back = front = x * node->plane->normal[0] + y * node->plane->normal[1];
620 front += startz * node->plane->normal[2];
621 back += endz * node->plane->normal[2];
622 side = front < node->plane->dist;
623 if ((back < node->plane->dist) == side)
625 node = node->children[side];
628 // found an intersection
629 // mid = startz + (endz - startz) * ((front - node->plane->dist) / ((front - node->plane->dist) - (back - node->plane->dist)));
630 // mid = startz + (endz - startz) * ((front - node->plane->dist) / (front - back));
631 mid = startz + distz * (front - node->plane->dist) / (front - back);
635 // go down front side
636 if (node->children[side]->contents >= 0 && RecursiveLightPoint (color, node->children[side], x, y, startz, mid))
637 return true; // hit something
640 // check for impact on this node
641 if (node->numsurfaces)
646 surf = cl.worldmodel->surfaces + node->firstsurface;
647 for (i = 0;i < node->numsurfaces;i++, surf++)
649 if (!(surf->flags & SURF_LIGHTMAP))
650 continue; // no lightmaps
652 ds = (int) (x * surf->texinfo->vecs[0][0] + y * surf->texinfo->vecs[0][1] + mid * surf->texinfo->vecs[0][2] + surf->texinfo->vecs[0][3]);
653 dt = (int) (x * surf->texinfo->vecs[1][0] + y * surf->texinfo->vecs[1][1] + mid * surf->texinfo->vecs[1][2] + surf->texinfo->vecs[1][3]);
655 if (ds < surf->texturemins[0] || dt < surf->texturemins[1])
658 ds -= surf->texturemins[0];
659 dt -= surf->texturemins[1];
661 if (ds > surf->extents[0] || dt > surf->extents[1])
667 int maps, line3, size3, dsfrac = ds & 15, dtfrac = dt & 15, scale = 0, r00 = 0, g00 = 0, b00 = 0, r01 = 0, g01 = 0, b01 = 0, r10 = 0, g10 = 0, b10 = 0, r11 = 0, g11 = 0, b11 = 0;
668 line3 = ((surf->extents[0]>>4)+1)*3;
669 size3 = ((surf->extents[0]>>4)+1) * ((surf->extents[1]>>4)+1)*3; // LordHavoc: *3 for colored lighting
671 lightmap = surf->samples + ((dt>>4) * ((surf->extents[0]>>4)+1) + (ds>>4))*3; // LordHavoc: *3 for color
673 for (maps = 0;maps < MAXLIGHTMAPS && surf->styles[maps] != 255;maps++)
675 scale = d_lightstylevalue[surf->styles[maps]];
676 r00 += lightmap[ 0] * scale;g00 += lightmap[ 1] * scale;b00 += lightmap[ 2] * scale;
677 r01 += lightmap[ 3] * scale;g01 += lightmap[ 4] * scale;b01 += lightmap[ 5] * scale;
678 r10 += lightmap[line3+0] * scale;g10 += lightmap[line3+1] * scale;b10 += lightmap[line3+2] * scale;
679 r11 += lightmap[line3+3] * scale;g11 += lightmap[line3+4] * scale;b11 += lightmap[line3+5] * scale;
684 // LordHavoc: here's the readable version of the interpolation
685 // code, not quite as easy for the compiler to optimize...
687 // dsfrac is the X position in the lightmap pixel, * 16
688 // dtfrac is the Y position in the lightmap pixel, * 16
689 // r00 is top left corner, r01 is top right corner
690 // r10 is bottom left corner, r11 is bottom right corner
691 // g and b are the same layout.
692 // r0 and r1 are the top and bottom intermediate results
694 // first we interpolate the top two points, to get the top
696 r0 = (((r01-r00) * dsfrac) >> 4) + r00;
697 g0 = (((g01-g00) * dsfrac) >> 4) + g00;
698 b0 = (((b01-b00) * dsfrac) >> 4) + b00;
699 // then we interpolate the bottom two points, to get the
700 // bottom edge sample
701 r1 = (((r11-r10) * dsfrac) >> 4) + r10;
702 g1 = (((g11-g10) * dsfrac) >> 4) + g10;
703 b1 = (((b11-b10) * dsfrac) >> 4) + b10;
704 // then we interpolate the top and bottom samples to get the
705 // middle sample (the one which was requested)
706 r = (((r1-r0) * dtfrac) >> 4) + r0;
707 g = (((g1-g0) * dtfrac) >> 4) + g0;
708 b = (((b1-b0) * dtfrac) >> 4) + b0;
711 color[0] += (float) ((((((((r11-r10) * dsfrac) >> 4) + r10)-((((r01-r00) * dsfrac) >> 4) + r00)) * dtfrac) >> 4) + ((((r01-r00) * dsfrac) >> 4) + r00)) * (1.0f / 32768.0f);
712 color[1] += (float) ((((((((g11-g10) * dsfrac) >> 4) + g10)-((((g01-g00) * dsfrac) >> 4) + g00)) * dtfrac) >> 4) + ((((g01-g00) * dsfrac) >> 4) + g00)) * (1.0f / 32768.0f);
713 color[2] += (float) ((((((((b11-b10) * dsfrac) >> 4) + b10)-((((b01-b00) * dsfrac) >> 4) + b00)) * dtfrac) >> 4) + ((((b01-b00) * dsfrac) >> 4) + b00)) * (1.0f / 32768.0f);
715 return true; // success
720 node = node->children[side ^ 1];
722 distz = endz - startz;
724 // return RecursiveLightPoint (color, node->children[side ^ 1], x, y, mid, endz);
728 void R_CompleteLightPoint (vec3_t color, vec3_t p, int dynamic, mleaf_t *leaf)
736 leaf = Mod_PointInLeaf(p, cl.worldmodel);
738 if (leaf->contents == CONTENTS_SOLID)
740 color[0] = color[1] = color[2] = 0;
744 if (r_fullbright.integer || !cl.worldmodel->lightdata)
746 color[0] = color[1] = color[2] = 2;
750 color[0] = color[1] = color[2] = r_ambient.value * (2.0f / 128.0f);
751 if (cl.worldmodel->numlights)
753 for (i = 0;i < cl.worldmodel->numlights;i++)
755 sl = cl.worldmodel->lights + i;
756 if (d_lightstylevalue[sl->style] > 0)
758 VectorSubtract (p, sl->origin, dist);
759 f = DotProduct(dist, dist) + sl->distbias;
760 f = (1.0f / f) - sl->subtract;
763 if (CL_TraceLine(p, sl->origin, NULL, NULL, 0, false) == 1)
765 f *= d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
766 VectorMA(color, f, sl->light, color);
774 RecursiveLightPoint (color, cl.worldmodel->nodes, p[0], p[1], p[2], p[2] - 65536);
776 if (dynamic && leaf->dlightframe == r_framecount)
778 dlightbits = leaf->dlightbits;
779 for (i = 0;i < r_numdlights;i++)
781 if (!(dlightbits[i >> 5] & (1 << (i & 31))))
784 VectorSubtract (p, rd->origin, dist);
785 f = DotProduct(dist, dist) + LIGHTOFFSET;
786 if (f < rd->cullradius2)
788 f = (1.0f / f) - rd->lightsubtract;
790 VectorMA(color, f, rd->light, color);
796 void R_ModelLightPoint (vec3_t color, vec3_t p, int *dlightbits)
799 leaf = Mod_PointInLeaf(p, cl.worldmodel);
800 if (leaf->contents == CONTENTS_SOLID)
802 color[0] = color[1] = color[2] = 0;
803 dlightbits[0] = dlightbits[1] = dlightbits[2] = dlightbits[3] = dlightbits[4] = dlightbits[5] = dlightbits[6] = dlightbits[7] = 0;
807 if (r_fullbright.integer || !cl.worldmodel->lightdata)
809 color[0] = color[1] = color[2] = 2;
810 dlightbits[0] = dlightbits[1] = dlightbits[2] = dlightbits[3] = dlightbits[4] = dlightbits[5] = dlightbits[6] = dlightbits[7] = 0;
814 color[0] = color[1] = color[2] = r_ambient.value * (2.0f / 128.0f);
815 if (!cl.worldmodel->numlights)
816 RecursiveLightPoint (color, cl.worldmodel->nodes, p[0], p[1], p[2], p[2] - 65536);
818 if (leaf->dlightframe == r_framecount)
820 dlightbits[0] = leaf->dlightbits[0];
821 dlightbits[1] = leaf->dlightbits[1];
822 dlightbits[2] = leaf->dlightbits[2];
823 dlightbits[3] = leaf->dlightbits[3];
824 dlightbits[4] = leaf->dlightbits[4];
825 dlightbits[5] = leaf->dlightbits[5];
826 dlightbits[6] = leaf->dlightbits[6];
827 dlightbits[7] = leaf->dlightbits[7];
830 dlightbits[0] = dlightbits[1] = dlightbits[2] = dlightbits[3] = dlightbits[4] = dlightbits[5] = dlightbits[6] = dlightbits[7] = 0;
833 void R_LightModel(int numverts, float colorr, float colorg, float colorb, int worldcoords)
835 int i, j, nearlights = 0;
836 float color[3], basecolor[3], v[3], t, *av, *avn, *avc, a, number, f/*, hardness, hardnessoffset*/, dist2;
846 nearlight[MAX_DLIGHTS], *nl;
847 int modeldlightbits[8];
850 a = currentrenderentity->alpha;
851 if (currentrenderentity->effects & EF_FULLBRIGHT)
853 basecolor[0] = colorr;
854 basecolor[1] = colorg;
855 basecolor[2] = colorb;
859 if (r_lightmodels.integer)
861 R_ModelLightPoint(basecolor, currentrenderentity->origin, modeldlightbits);
865 // this code is unused for now
866 for (i = 0, sl = staticlight;i < staticlights && nearlights < MAX_DLIGHTS;i++, sl++)
868 if (TraceLine(currentrenderentity->origin, sl->origin, NULL, NULL, 0) == 1)
870 nl->fadetype = sl->fadetype;
871 nl->distancescale = sl->distancescale;
872 nl->radius = sl->radius;
873 // transform the light into the model's coordinate system
875 VectorCopy(sl->origin, nl->origin);
877 softwareuntransform(sl->origin, nl->origin);
878 VectorCopy(sl->color, nl->light);
879 nl->cullradius2 = 99999999;
880 nl->lightsubtract = 0;
886 // this code is unused for now
887 for (i = 0, sl = cl.worldmodel->lights;i < cl.worldmodel->numlights && nearlights < MAX_DLIGHTS;i++, sl++)
889 if (CL_TraceLine(currentrenderentity->origin, sl->origin, NULL, NULL, 0, false) == 1)
891 nl->falloff = sl->falloff;
892 // transform the light into the model's coordinate system
894 VectorCopy(sl->origin, nl->origin);
896 softwareuntransform(sl->origin, nl->origin);
897 f = d_lightstylevalue[sl->style] * (1.0f / 32768.0f);
898 VectorScale(sl->light, f, nl->light);
899 nl->cullradius2 = 99999999;
900 nl->lightsubtract = sl->subtract;
901 nl->offset = sl->distbias;
906 for (i = 0;i < r_numdlights && nearlights < MAX_DLIGHTS;i++)
908 if (!(modeldlightbits[i >> 5] & (1 << (i & 31))))
910 if (currentrenderentity == r_dlight[i].ent)
912 f = (1.0f / LIGHTOFFSET) - nl->lightsubtract;
914 VectorMA(basecolor, f, r_dlight[i].light, basecolor);
918 // convert 0-255 radius coloring to 0-1, while also amplifying the brightness by 16
919 //if (TraceLine(currentrenderentity->origin, r_dlight[i].origin, NULL, NULL, 0) == 1)
921 // transform the light into the model's coordinate system
923 VectorCopy(r_dlight[i].origin, nl->origin);
925 softwareuntransform(r_dlight[i].origin, nl->origin);
926 nl->cullradius2 = r_dlight[i].cullradius2;
927 nl->light[0] = r_dlight[i].light[0] * colorr;
928 nl->light[1] = r_dlight[i].light[1] * colorg;
929 nl->light[2] = r_dlight[i].light[2] * colorb;
930 nl->lightsubtract = r_dlight[i].lightsubtract;
931 nl->offset = LIGHTOFFSET;
939 R_CompleteLightPoint (basecolor, currentrenderentity->origin, true, NULL);
941 basecolor[0] *= colorr;
942 basecolor[1] *= colorg;
943 basecolor[2] *= colorb;
944 avc = aliasvertcolor;
949 //hardness = r_lightmodelhardness.value;
950 //hardnessoffset = (1.0f - hardness);
951 for (i = 0;i < numverts;i++)
953 VectorCopy(basecolor, color);
954 for (j = 0, nl = &nearlight[0];j < nearlights;j++, nl++)
956 // distance attenuation
957 VectorSubtract(nl->origin, av, v);
958 dist2 = DotProduct(v,v);
959 if (dist2 < nl->cullradius2)
961 f = (1.0f / (dist2 + nl->offset)) - nl->lightsubtract;
964 // directional shading
966 t = 1.0f / sqrt(dist2);
968 number = DotProduct(v, v);
969 *((int *)&t) = 0x5f3759df - ((* (int *) &number) >> 1);
970 t = t * (1.5f - (number * 0.5f * t * t));
972 // DotProduct(avn,v) * t is dotproduct with a normalized v,
973 // the hardness variables are for backlighting/shinyness
974 f *= DotProduct(avn,v) * t;// * hardness + hardnessoffset;
976 VectorMA(color, f, nl->light, color);
981 VectorCopy(color, avc);
990 for (i = 0;i < numverts;i++)
992 VectorCopy(basecolor, avc);