4f36d50f60
git-svn-id: https://svn.code.sf.net/p/fteqw/code/trunk@354 fc73d0e0-1445-4013-8a0c-d673dee63da5
952 lines
19 KiB
C
952 lines
19 KiB
C
#include "bothdefs.h"
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#if defined(GLQUAKE) || (!defined(GLQUAKE) && !defined(SWQUAKE))
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#ifdef RUNTIMELIGHTING
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#if defined(GLQUAKE)
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#include "quakedef.h"
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extern model_t *lightmodel;
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#define bsptexinfo(i) (*i)
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#define dsurfedges lightmodel->surfedges
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#define dvertexes lightmodel->vertexes
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#define dedges lightmodel->edges
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#define texinfo_t mtexinfo_t
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#define Q_PI M_PI
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#define Error Host_Error
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#define byte qbyte
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#define dfaces lightmodel->surfaces
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#define dplanes lightmodel->planes
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#define dface_t msurface_t
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#define dvertex_t mvertex_t
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#define point position
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#define side flags & SURF_PLANEBACK
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#define scaledist 1
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#define rangescale 0.5
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#define extrasamples 1
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#define scalecos 0.5
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typedef struct mentity_s {
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vec3_t origin;
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float light;
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float angle;
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float cone;
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int style;
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vec3_t colour;
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char classname[64];
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char target[64];
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char targetname[64];
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struct mentity_s *targetent;
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} mentity_t;
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static mentity_t entities[8192];
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static int num_entities;
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#define bsp_origin vec3_origin
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/*
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============
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CastRay
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Returns the distance between the points, or -1 if blocked
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=============
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*/
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vec_t CastRay (vec3_t p1, vec3_t p2)
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{
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trace_t trace;
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vec3_t move;
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hull_t *hull;
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hull = &lightmodel->hulls[0];
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memset (&trace, 0, sizeof(trace));
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if (!hull->funcs.RecursiveHullCheck (hull, hull->firstclipnode, 0, 1, p1, p2, &trace))
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return -1;
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VectorSubtract(p1, p2, move);
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return VectorLength(move);
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}
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static void ParseEpair (mentity_t *mapent, char *key, char *value)
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{
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double vec[3];
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if (!strcmp(key, "classname"))
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strcpy(mapent->classname, value);
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else if (!strcmp(key, "target"))
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strcpy(mapent->target, value);
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else if (!strcmp(key, "targetname"))
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strcpy(mapent->targetname, value);
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else if (!strcmp(key, "light") || !strcmp(key, "_light"))
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mapent->light = atoi(value);
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else if (!strcmp(key, "style") || !strcmp(key, "_style"))
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mapent->style = atoi(value);
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else if (!strcmp(key, "angle") || !strcmp(key, "_angle"))
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mapent->angle = atof(value);
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else if (!strcmp(key, "cone") || !strcmp(key, "_cone"))
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mapent->cone = atof(value);
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else if (!strcmp(key, "origin"))
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{
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sscanf (value, "%lf %lf %lf", &vec[0], &vec[1], &vec[2]);
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mapent->origin[0]=vec[0];
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mapent->origin[1]=vec[1];
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mapent->origin[2]=vec[2];
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}
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else if (!strcmp(key, "colour") || !strcmp(key, "color") || !strcmp(key, "_colour") || !strcmp(key, "_color"))
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{
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sscanf (value, "%lf %lf %lf", &vec[0], &vec[1], &vec[2]);
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mapent->colour[0]=vec[0];
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mapent->colour[1]=vec[1];
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mapent->colour[2]=vec[2];
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}
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}
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void LightLoadEntities(char *entstring)
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{
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#define DEFAULTLIGHTLEVEL 300
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mentity_t *mapent;
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char key[1024];
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int i;
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int switchedstyle=32;
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num_entities = 0;
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while(1)
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{
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entstring = COM_Parse(entstring);
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if (!entstring || !*com_token)
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break;
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if (strcmp(com_token, "{"))
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Host_Error("token wasn't an open brace\n");
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mapent = &entities[num_entities];
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memset(mapent, 0, sizeof(*mapent));
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mapent->colour[0] = 0;
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mapent->colour[1] = 0;
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mapent->colour[2] = 0;
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while(1)
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{
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entstring = COM_Parse(entstring);
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if (!strcmp(com_token, "}"))
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break;
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strcpy(key, com_token);
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entstring = COM_Parse(entstring);
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ParseEpair(mapent, key, com_token);
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}
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if (!mapent->colour[0] && !mapent->colour[1] && !mapent->colour[2])
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{
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int cont;
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vec3_t v;
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hull_t *hull = &lightmodel->hulls[0];
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v[0] = mapent->origin[0];
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v[1] = mapent->origin[1];
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cont=0;
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for (i = 0; i < 256; i+=16)
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{
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v[2] = mapent->origin[2]-i;
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cont = hull->funcs.HullPointContents (hull, v);
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if (cont & (FTECONTENTS_LAVA | FTECONTENTS_SLIME | FTECONTENTS_SOLID))
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break;
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}
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if (cont & FTECONTENTS_LAVA)
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{
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mapent->colour[0] = 1;
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mapent->colour[1] = i/256.0;
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mapent->colour[2] = i/256.0;
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}
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else if (cont & FTECONTENTS_SLIME)
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{
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mapent->colour[0] = 0.5+0.5*i/256.0;
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mapent->colour[1] = 1;
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mapent->colour[2] = 0.5+0.5*i/256.0;
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}
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else
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{
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if (mapent->style == 9) //hmm..
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{
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mapent->colour[1] = 1;
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}
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else
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{
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if (!strncmp(mapent->classname, "light_torch_small_walltorch", 12))
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{
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mapent->colour[0] = 1;
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mapent->colour[1] = 0.7;
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mapent->colour[2] = 0.7;
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}
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else
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{
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mapent->colour[0] = 1;
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mapent->colour[1] = 1;
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if (strncmp(mapent->classname, "light_fluoro", 12))
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mapent->colour[2] = 1;
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}
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}
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}
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}
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if (!mapent->light && !strncmp (mapent->classname, "light", 5))
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mapent->light = DEFAULTLIGHTLEVEL;
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if (*mapent->targetname && !mapent->style && !strcmp(mapent->classname, "light"))
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{
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for (i = 0; i <= num_entities; i++)
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{
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if (entities[i].style >= 32 && !strcmp(entities[i].targetname, mapent->targetname))
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{
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mapent->style = entities[i].style;
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break;
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}
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}
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if (i == num_entities)
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mapent->style = switchedstyle++;
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}
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num_entities++;
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}
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for (mapent = entities; mapent < &entities[num_entities]; mapent++)
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{
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if (*mapent->target)
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{
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for (i = 0; i < num_entities; i++)
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{
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if (mapent == &entities[i])
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continue;
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if (!strcmp(mapent->target, entities[i].targetname))
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{
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mapent->targetent = &entities[i];
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break;
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}
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}
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}
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}
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}
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#else
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#define mentity_t entity_t
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#define UTILITY
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#include "light.h"
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#define bsptexinfo(i) texinfo[i]
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/*
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============
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CastRay
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Returns the distance between the points, or -1 if blocked
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=============
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*/
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vec_t CastRay (vec3_t p1, vec3_t p2)
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{
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int i;
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vec_t t;
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qboolean trace;
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trace = TestLine (p1, p2);
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if (!trace)
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return -1; // ray was blocked
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t = 0;
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for (i=0 ; i< 3 ; i++)
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t += (p2[i]-p1[i]) * (p2[i]-p1[i]);
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if (t < 1)
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t = 1; // don't blow up...
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return sqrt(t);
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}
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#endif
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/*
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===============================================================================
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SAMPLE POINT DETERMINATION
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void SetupBlock (dface_t *f) Returns with surfpt[] set
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This is a little tricky because the lightmap covers more area than the face.
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If done in the straightforward fashion, some of the
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sample points will be inside walls or on the other side of walls, causing
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false shadows and light bleeds.
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To solve this, I only consider a sample point valid if a line can be drawn
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between it and the exact midpoint of the face. If invalid, it is adjusted
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towards the center until it is valid.
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(this doesn't completely work)
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===============================================================================
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*/
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#define SINGLEMAP (18*18*4)
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typedef struct
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{
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vec3_t lightmaps[MAXLIGHTMAPS][SINGLEMAP];
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vec3_t lightnorm[MAXLIGHTMAPS][SINGLEMAP];
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int numlightstyles;
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vec_t *light;
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vec_t facedist;
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vec3_t facenormal;
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int numsurfpt;
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vec3_t surfpt[SINGLEMAP];
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vec3_t texorg;
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vec3_t worldtotex[2]; // s = (world - texorg) . worldtotex[0]
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vec3_t textoworld[2]; // world = texorg + s * textoworld[0]
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vec_t exactmins[2], exactmaxs[2];
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int texmins[2], texsize[2];
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int lightstyles[256];
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int surfnum;
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dface_t *face;
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} llightinfo_t;
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/*
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================
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CalcFaceVectors
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Fills in texorg, worldtotex. and textoworld
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================
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*/
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static void LightCalcFaceVectors (llightinfo_t *l)
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{
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texinfo_t *tex;
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int i, j;
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vec3_t texnormal;
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float distscale;
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vec_t dist, len;
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tex = &bsptexinfo(l->face->texinfo);
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// convert from float to vec_t
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for (i=0 ; i<2 ; i++)
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for (j=0 ; j<3 ; j++)
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l->worldtotex[i][j] = tex->vecs[i][j];
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// calculate a normal to the texture axis. points can be moved along this
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// without changing their S/T
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texnormal[0] = tex->vecs[1][1]*tex->vecs[0][2]
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- tex->vecs[1][2]*tex->vecs[0][1];
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texnormal[1] = tex->vecs[1][2]*tex->vecs[0][0]
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- tex->vecs[1][0]*tex->vecs[0][2];
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texnormal[2] = tex->vecs[1][0]*tex->vecs[0][1]
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- tex->vecs[1][1]*tex->vecs[0][0];
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VectorNormalize (texnormal);
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// flip it towards plane normal
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distscale = DotProduct (texnormal, l->facenormal);
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if (!distscale)
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Error ("Texture axis perpendicular to face");
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if (distscale < 0)
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{
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distscale = -distscale;
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VectorSubtract (vec3_origin, texnormal, texnormal);
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}
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// distscale is the ratio of the distance along the texture normal to
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// the distance along the plane normal
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distscale = 1/distscale;
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for (i=0 ; i<2 ; i++)
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{
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len = VectorLength (l->worldtotex[i]);
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dist = DotProduct (l->worldtotex[i], l->facenormal);
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dist *= distscale;
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VectorMA (l->worldtotex[i], -dist, texnormal, l->textoworld[i]);
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VectorScale (l->textoworld[i], (1/len)*(1/len), l->textoworld[i]);
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}
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// calculate texorg on the texture plane
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for (i=0 ; i<3 ; i++)
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l->texorg[i] = -tex->vecs[0][3]* l->textoworld[0][i] - tex->vecs[1][3] * l->textoworld[1][i];
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// project back to the face plane
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dist = DotProduct (l->texorg, l->facenormal) - l->facedist - 1;
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dist *= distscale;
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VectorMA (l->texorg, -dist, texnormal, l->texorg);
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}
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/*
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================
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CalcFaceExtents
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Fills in s->texmins[] and s->texsize[]
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also sets exactmins[] and exactmaxs[]
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================
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*/
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static void LightCalcFaceExtents (llightinfo_t *l)
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{
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dface_t *s;
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vec_t mins[2], maxs[2], val;
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int i,j, e;
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dvertex_t *v;
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texinfo_t *tex;
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s = l->face;
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mins[0] = mins[1] = 999999;
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maxs[0] = maxs[1] = -99999;
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tex = &bsptexinfo(s->texinfo);
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for (i=0 ; i<s->numedges ; i++)
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{
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e = dsurfedges[s->firstedge+i];
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if (e >= 0)
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v = dvertexes + dedges[e].v[0];
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else
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v = dvertexes + dedges[-e].v[1];
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for (j=0 ; j<2 ; j++)
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{
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val = v->point[0] * tex->vecs[j][0] +
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v->point[1] * tex->vecs[j][1] +
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v->point[2] * tex->vecs[j][2] +
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tex->vecs[j][3];
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if (val < mins[j])
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mins[j] = val;
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if (val > maxs[j])
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maxs[j] = val;
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}
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}
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for (i=0 ; i<2 ; i++)
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{
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l->exactmins[i] = mins[i];
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l->exactmaxs[i] = maxs[i];
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mins[i] = floor(mins[i]/16);
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maxs[i] = ceil(maxs[i]/16);
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l->texmins[i] = mins[i];
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l->texsize[i] = maxs[i] - mins[i];
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if (l->texsize[i] > 17)
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Error ("Bad surface extents");
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}
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}
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/*
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=================
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CalcPoints
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For each texture aligned grid point, back project onto the plane
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to get the world xyz value of the sample point
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=================
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*/
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int c_bad;
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static void LightCalcPoints (llightinfo_t *l)
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{
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int i;
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int s, t, j;
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int w, h, step;
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vec_t starts, startt, us, ut;
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vec_t *surf;
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vec_t mids, midt;
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vec3_t facemid, move;
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//
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// fill in surforg
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// the points are biased towards the center of the surface
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// to help avoid edge cases just inside walls
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//
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surf = l->surfpt[0];
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mids = (l->exactmaxs[0] + l->exactmins[0])/2;
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midt = (l->exactmaxs[1] + l->exactmins[1])/2;
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for (j=0 ; j<3 ; j++)
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facemid[j] = l->texorg[j] + l->textoworld[0][j]*mids + l->textoworld[1][j]*midt;
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if (extrasamples)
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{ // extra filtering
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h = (l->texsize[1]+1)*2;
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w = (l->texsize[0]+1)*2;
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starts = (l->texmins[0]-0.5)*16;
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startt = (l->texmins[1]-0.5)*16;
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step = 8;
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}
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else
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{
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h = l->texsize[1]+1;
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w = l->texsize[0]+1;
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starts = l->texmins[0]*16;
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startt = l->texmins[1]*16;
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step = 16;
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}
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l->numsurfpt = w * h;
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for (t=0 ; t<h ; t++)
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{
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for (s=0 ; s<w ; s++, surf+=3)
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{
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us = starts + s*step;
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ut = startt + t*step;
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// if a line can be traced from surf to facemid, the point is good
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for (i=0 ; i<6 ; i++)
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{
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// calculate texture point
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for (j=0 ; j<3 ; j++)
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surf[j] = l->texorg[j] + l->textoworld[0][j]*us
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+ l->textoworld[1][j]*ut;
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if (CastRay (facemid, surf) != -1)
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break; // got it
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if (i & 1)
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{
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if (us > mids)
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{
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us -= 8;
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if (us < mids)
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us = mids;
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}
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else
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{
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us += 8;
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if (us > mids)
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us = mids;
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}
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}
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else
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{
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if (ut > midt)
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{
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ut -= 8;
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if (ut < midt)
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ut = midt;
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}
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else
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|
{
|
|
ut += 8;
|
|
if (ut > midt)
|
|
ut = midt;
|
|
}
|
|
}
|
|
|
|
// move surf 8 pixels towards the center
|
|
VectorSubtract (facemid, surf, move);
|
|
VectorNormalize (move);
|
|
VectorMA (surf, 8, move, surf);
|
|
}
|
|
if (i == 2)
|
|
c_bad++;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
|
|
/*
|
|
===============================================================================
|
|
|
|
FACE LIGHTING
|
|
|
|
===============================================================================
|
|
*/
|
|
|
|
int c_culldistplane, c_proper;
|
|
|
|
/*
|
|
================
|
|
SingleLightFace
|
|
================
|
|
*/
|
|
static void SingleLightFace (mentity_t *light, llightinfo_t *l)
|
|
{
|
|
vec_t dist;
|
|
vec3_t incoming;
|
|
vec_t angle;
|
|
vec_t add;
|
|
vec_t *surf;
|
|
qboolean hit;
|
|
int mapnum;
|
|
int size;
|
|
int c, i;
|
|
vec3_t rel;
|
|
vec3_t spotvec;
|
|
vec_t falloff;
|
|
vec3_t *lightsamp;
|
|
vec3_t *norms;
|
|
|
|
VectorSubtract (light->origin, bsp_origin, rel);
|
|
dist = scaledist * (DotProduct (rel, l->facenormal) - l->facedist);
|
|
|
|
// don't bother with lights behind the surface
|
|
if (dist <= 0)
|
|
return;
|
|
|
|
// don't bother with light too far away
|
|
if (dist > light->light)
|
|
{
|
|
c_culldistplane++;
|
|
return;
|
|
}
|
|
|
|
if (light->targetent)
|
|
{
|
|
VectorSubtract (light->targetent->origin, light->origin, spotvec);
|
|
VectorNormalize (spotvec);
|
|
if (!light->angle)
|
|
falloff = -cos(20*Q_PI/180);
|
|
else
|
|
falloff = -cos(light->angle/2*Q_PI/180);
|
|
}
|
|
else
|
|
falloff = 0; // shut up compiler warnings
|
|
|
|
mapnum = 0;
|
|
for (mapnum=0 ; mapnum<l->numlightstyles ; mapnum++)
|
|
if (l->lightstyles[mapnum] == light->style)
|
|
break;
|
|
|
|
lightsamp = l->lightmaps[mapnum];
|
|
norms = l->lightnorm[mapnum];
|
|
if (mapnum == l->numlightstyles)
|
|
{ // init a new light map
|
|
if (mapnum == MAXLIGHTMAPS)
|
|
{
|
|
printf ("WARNING: Too many light styles on a face\n");
|
|
return;
|
|
}
|
|
size = (l->texsize[1]+1)*(l->texsize[0]+1);
|
|
for (i=0 ; i<size ; i++)
|
|
{
|
|
lightsamp[i][0] = 0;
|
|
lightsamp[i][1] = 0;
|
|
lightsamp[i][2] = 0;
|
|
norms[i][0] = 0;
|
|
norms[i][1] = 0;
|
|
norms[i][2] = 0;
|
|
}
|
|
}
|
|
|
|
//
|
|
// check it for real
|
|
//
|
|
hit = false;
|
|
c_proper++;
|
|
|
|
surf = l->surfpt[0];
|
|
for (c=0 ; c<l->numsurfpt ; c++, surf+=3)
|
|
{
|
|
dist = CastRay(light->origin, surf)*scaledist;
|
|
if (dist < 0)
|
|
continue; // light doesn't reach
|
|
|
|
VectorSubtract (light->origin, surf, incoming);
|
|
VectorNormalize (incoming);
|
|
if (light->targetent)
|
|
{ // spotlight cutoff
|
|
if (DotProduct (spotvec, incoming) > falloff)
|
|
continue;
|
|
}
|
|
angle = DotProduct (incoming, l->facenormal);
|
|
|
|
angle = (1.0-scalecos) + scalecos*angle;
|
|
add = light->light - dist;
|
|
add *= angle;
|
|
if (add < 0)
|
|
continue;
|
|
|
|
lightsamp[c][0] += add*light->colour[0];
|
|
lightsamp[c][1] += add*light->colour[1];
|
|
lightsamp[c][2] += add*light->colour[2];
|
|
|
|
norms[c][0] += add * incoming[0]; //Quake doesn't make sence some times.
|
|
norms[c][1] -= add * incoming[1];
|
|
norms[c][2] -= add * incoming[2];
|
|
|
|
if (add > 1) // ignore real tiny lights
|
|
hit = true;
|
|
}
|
|
|
|
if (mapnum == l->numlightstyles && hit)
|
|
{
|
|
l->lightstyles[mapnum] = light->style;
|
|
l->numlightstyles++; // the style has some real data now
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
FixMinlight
|
|
============
|
|
*/
|
|
static void FixMinlight (llightinfo_t *l)
|
|
{
|
|
int i, j;
|
|
float minlight;
|
|
|
|
minlight = 0;
|
|
|
|
// if minlight is set, there must be a style 0 light map
|
|
if (!minlight)
|
|
return;
|
|
|
|
for (i=0 ; i< l->numlightstyles ; i++)
|
|
{
|
|
if (l->lightstyles[i] == 0)
|
|
break;
|
|
}
|
|
if (i == l->numlightstyles)
|
|
{
|
|
if (l->numlightstyles == MAXLIGHTMAPS)
|
|
return; // oh well..
|
|
for (j=0 ; j<l->numsurfpt ; j++)
|
|
{
|
|
l->lightmaps[i][j][0] = minlight;
|
|
l->lightmaps[i][j][1] = minlight;
|
|
l->lightmaps[i][j][2] = minlight;
|
|
}
|
|
l->lightstyles[i] = 0;
|
|
l->numlightstyles++;
|
|
}
|
|
else
|
|
{
|
|
for (j=0 ; j<l->numsurfpt ; j++)
|
|
{
|
|
if ( l->lightmaps[i][j][0] < minlight)
|
|
l->lightmaps[i][j][0] = minlight;
|
|
if ( l->lightmaps[i][j][1] < minlight)
|
|
l->lightmaps[i][j][1] = minlight;
|
|
if ( l->lightmaps[i][j][2] < minlight)
|
|
l->lightmaps[i][j][2] = minlight;
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
LightFace
|
|
============
|
|
*/
|
|
void LightFace (int surfnum)
|
|
{
|
|
dface_t *f;
|
|
llightinfo_t l;
|
|
int s, t;
|
|
int i,j,c,ch;
|
|
vec_t total, mean;
|
|
int size;
|
|
int lightmapwidth, lightmapsize;
|
|
#ifdef UTILITY
|
|
byte *out;
|
|
#endif
|
|
byte *rgbout;
|
|
byte *dulout;
|
|
vec3_t *light, *norm;
|
|
vec3_t wnorm, temp;
|
|
int w, h;
|
|
|
|
f = dfaces + surfnum;
|
|
|
|
//
|
|
// some surfaces don't need lightmaps
|
|
//
|
|
#ifdef UTILITY
|
|
for (j=0 ; j<MAXLIGHTMAPS ; j++)
|
|
f->styles[j] = 255;
|
|
#endif
|
|
if ( bsptexinfo(f->texinfo).flags & TEX_SPECIAL)
|
|
{ // non-lit texture
|
|
#ifdef UTILITY
|
|
f->lightofs = -1;
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
#ifndef UTILITY
|
|
if (!f->samples)
|
|
return;
|
|
#endif
|
|
|
|
memset (&l, 0, sizeof(l));
|
|
l.surfnum = surfnum;
|
|
l.face = f;
|
|
|
|
//
|
|
// rotate plane
|
|
//
|
|
#ifndef UTILITY
|
|
VectorCopy (f->plane->normal, l.facenormal);
|
|
l.facedist = f->plane->dist;
|
|
#else
|
|
VectorCopy (dplanes[f->planenum].normal, l.facenormal);
|
|
l.facedist = dplanes[f->planenum].dist;
|
|
#endif
|
|
if (f->side)
|
|
{
|
|
VectorSubtract (vec3_origin, l.facenormal, l.facenormal);
|
|
l.facedist = -l.facedist;
|
|
}
|
|
|
|
|
|
|
|
LightCalcFaceVectors (&l);
|
|
LightCalcFaceExtents (&l);
|
|
LightCalcPoints (&l);
|
|
|
|
lightmapwidth = l.texsize[0]+1;
|
|
|
|
size = lightmapwidth*(l.texsize[1]+1);
|
|
if (size > SINGLEMAP)
|
|
Error ("Bad lightmap size");
|
|
|
|
for (i=0 ; i<MAXLIGHTMAPS ; i++)
|
|
l.lightstyles[i] = 255;
|
|
|
|
//
|
|
// cast all lights
|
|
//
|
|
l.numlightstyles = 0;
|
|
for (i=0 ; i<num_entities ; i++)
|
|
{
|
|
if (entities[i].light)
|
|
SingleLightFace (&entities[i], &l);
|
|
}
|
|
|
|
FixMinlight (&l);
|
|
|
|
if (!l.numlightstyles)
|
|
{ // no light hitting it
|
|
#ifdef UTILITY
|
|
f->lightofs = -1;
|
|
#endif
|
|
return;
|
|
}
|
|
|
|
#ifndef UTILITY
|
|
for (j=0 ; j<MAXLIGHTMAPS ; j++)
|
|
f->styles[j] = 255;
|
|
#endif
|
|
|
|
//
|
|
// save out the values
|
|
//
|
|
for (i=0 ; i <MAXLIGHTMAPS ; i++)
|
|
f->styles[i] = l.lightstyles[i];
|
|
|
|
lightmapsize = size*l.numlightstyles;
|
|
|
|
#ifdef UTILITY
|
|
if (runningrgblightdatabase)
|
|
{
|
|
out = GetFakeFileSpace(&f->lightofs, size);
|
|
rgbout = runningrgblightdatabase + f->lightofs*3;
|
|
dulout = runninglightnormbase + f->lightofs*3;
|
|
}
|
|
else
|
|
{
|
|
out = GetFileSpace (&f->lightofs, lightmapsize);
|
|
|
|
rgbout = GetRGBFileSpace (f->lightofs, lightmapsize);
|
|
dulout = GetNormFileSpace (f->lightofs, lightmapsize);
|
|
}
|
|
#else
|
|
rgbout = f->samples;
|
|
if (lightmodel->deluxdata)
|
|
dulout = f->samples - lightmodel->lightdata + lightmodel->deluxdata;
|
|
else
|
|
dulout = NULL;
|
|
#endif
|
|
|
|
|
|
|
|
// extra filtering
|
|
h = (l.texsize[1]+1)*2;
|
|
w = (l.texsize[0]+1)*2;
|
|
|
|
for (i=0 ; i< l.numlightstyles ; i++)
|
|
{
|
|
if (l.lightstyles[i] == 0xff)
|
|
Error ("Wrote empty lightmap");
|
|
light = l.lightmaps[i];
|
|
norm = l.lightnorm[i];
|
|
c = 0;
|
|
for (t=0 ; t<=l.texsize[1] ; t++)
|
|
{
|
|
for (s=0 ; s<=l.texsize[0] ; s++, c++)
|
|
{
|
|
mean = 0;
|
|
|
|
for (ch = 0; ch < 3; ch++)
|
|
{
|
|
if (extrasamples)
|
|
{ // filtered sample
|
|
total = light[t*2*w+s*2][ch] + light[t*2*w+s*2+1][ch]
|
|
+ light[(t*2+1)*w+s*2][ch] + light[(t*2+1)*w+s*2+1][ch];
|
|
total *= 0.25;
|
|
|
|
wnorm[ch] = norm[t*2*w+s*2][ch] + norm[t*2*w+s*2+1][ch]
|
|
+ norm[(t*2+1)*w+s*2][ch] + norm[(t*2+1)*w+s*2+1][ch];
|
|
}
|
|
else
|
|
{
|
|
total = light[c][ch];
|
|
wnorm[ch] = norm[c][ch];
|
|
}
|
|
total *= rangescale; // scale before clamping
|
|
#ifdef UTILITY
|
|
if (total > *out) //sorry - for qw
|
|
total = *out;
|
|
#else
|
|
if (total > *rgbout) //sorry - for qw
|
|
total = *rgbout;
|
|
#endif
|
|
if (total < 0)
|
|
Error ("light < 0");
|
|
|
|
*rgbout++ = total;
|
|
mean += total;
|
|
}
|
|
#ifdef UTILITY
|
|
*out++ = mean/3;
|
|
#endif
|
|
|
|
if (dulout)
|
|
{
|
|
temp[0] = DotProduct(wnorm, bsptexinfo(f->texinfo).vecs[0]);
|
|
temp[1] = DotProduct(wnorm, bsptexinfo(f->texinfo).vecs[1]);
|
|
temp[2] = DotProduct(wnorm, l.facenormal);
|
|
VectorNormalize(temp);
|
|
*dulout++ = (temp[0]+1)/2 * 255;
|
|
*dulout++ = (temp[1]+1)/2 * 255;
|
|
*dulout++ = (temp[2]+1)/2 * 255;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif
|