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ericw-tools/light/light.cc

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/* Copyright (C) 1996-1997 Id Software, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
See file, 'COPYING', for details.
*/
#include <stdint.h>
#include <assert.h>
#include <stdio.h>
#include <light/light.h>
#include <light/entities.h>
#include <xmmintrin.h>
#include <pmmintrin.h>
#include <vector>
#include <map>
#include <set>
float scaledist = 1.0;
float rangescale = 0.5;
float anglescale = 0.5;
float sun_anglescale = 0.5;
float fadegate = EQUAL_EPSILON;
int softsamples = 0;
float lightmapgamma = 1.0;
const vec3_t vec3_white = { 255, 255, 255 };
float surflight_subdivide = 128.0f;
int sunsamples = 64;
qboolean scaledonly = false;
unsigned int lightturb; //water, slime, lava, tele
qboolean addminlight = false;
lightsample_t minlight = { 0, { 255, 255, 255 } };
sun_t *suns = NULL;
/* dirt */
qboolean dirty = false;
qboolean dirtDebug = false;
int dirtMode = 0;
float dirtDepth = 128.0f;
float dirtScale = 1.0f;
float dirtGain = 1.0f;
float dirtAngle = 88.0f;
qboolean globalDirt = false;
qboolean minlightDirt = false;
qboolean dirtSetOnCmdline = false;
qboolean dirtModeSetOnCmdline = false;
qboolean dirtDepthSetOnCmdline = false;
qboolean dirtScaleSetOnCmdline = false;
qboolean dirtGainSetOnCmdline = false;
qboolean dirtAngleSetOnCmdline = false;
qboolean testFenceTextures = false;
qboolean surflight_dump = false;
static facesup_t *faces_sup; //lit2/bspx stuff
byte *filebase; // start of lightmap data
static byte *file_p; // start of free space after data
static byte *file_end; // end of free space for lightmap data
byte *lit_filebase; // start of litfile data
static byte *lit_file_p; // start of free space after litfile data
static byte *lit_file_end; // end of space for litfile data
byte *lux_buffer; // luxfile allocation (misaligned)
byte *lux_filebase; // start of luxfile data
static byte *lux_file_p; // start of free space after luxfile data
static byte *lux_file_end; // end of space for luxfile data
static modelinfo_t *modelinfo;
const modelinfo_t *const *tracelist;
const modelinfo_t *const *selfshadowlist;
int oversample = 1;
int write_litfile = 0; /* 0 for none, 1 for .lit, 2 for bspx, 3 for both */
int write_luxfile = 0; /* 0 for none, 1 for .lux, 2 for bspx, 3 for both */
qboolean onlyents = false;
qboolean phongDebug = false;
qboolean parse_escape_sequences = false;
uint32_t *extended_texinfo_flags = NULL;
char mapfilename[1024];
void
GetFileSpace(byte **lightdata, byte **colordata, byte **deluxdata, int size)
{
ThreadLock();
/* align to 4 byte boudaries */
file_p = (byte *)(((uintptr_t)file_p + 3) & ~3);
*lightdata = file_p;
file_p += size;
if (colordata) {
/* align to 12 byte boundaries to match offets with 3 * lightdata */
if ((uintptr_t)lit_file_p % 12)
lit_file_p += 12 - ((uintptr_t)lit_file_p % 12);
*colordata = lit_file_p;
lit_file_p += size * 3;
}
if (deluxdata) {
/* align to 12 byte boundaries to match offets with 3 * lightdata */
if ((uintptr_t)lux_file_p % 12)
lux_file_p += 12 - ((uintptr_t)lux_file_p % 12);
*deluxdata = lux_file_p;
lux_file_p += size * 3;
}
ThreadUnlock();
if (file_p > file_end)
Error("%s: overrun", __func__);
if (lit_file_p > lit_file_end)
Error("%s: overrun", __func__);
}
const modelinfo_t *ModelInfoForFace(const bsp2_t *bsp, int facenum)
{
int i;
dmodel_t *model;
/* Find the correct model offset */
for (i = 0, model = bsp->dmodels; i < bsp->nummodels; i++, model++) {
if (facenum < model->firstface)
continue;
if (facenum < model->firstface + model->numfaces)
break;
}
if (i == bsp->nummodels) {
return NULL;
}
return &modelinfo[i];
}
static void *
LightThread(void *arg)
{
int facenum, i;
const bsp2_t *bsp = (const bsp2_t *)arg;
const modelinfo_t *face_modelinfo;
struct ltface_ctx *ctx;
_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
while (1) {
facenum = GetThreadWork();
if (facenum == -1)
break;
ctx = LightFaceInit(bsp);
/* Find the correct model offset */
face_modelinfo = ModelInfoForFace(bsp, facenum);
if (face_modelinfo == NULL) {
// ericw -- silenced this warning becasue is causes spam when "skip" faces are used
//logprint("warning: no model has face %d\n", facenum);
continue;
}
if (!faces_sup)
LightFace(bsp->dfaces + facenum, NULL, face_modelinfo, ctx);
else if (scaledonly)
{
bsp->dfaces[facenum].lightofs = -1;
bsp->dfaces[facenum].styles[0] = 255;
LightFace(bsp->dfaces + facenum, faces_sup + facenum, face_modelinfo, ctx);
}
else if (faces_sup[facenum].lmscale == face_modelinfo->lightmapscale)
{
LightFace(bsp->dfaces + facenum, NULL, face_modelinfo, ctx);
faces_sup[facenum].lightofs = bsp->dfaces[facenum].lightofs;
for (i = 0; i < MAXLIGHTMAPS; i++)
faces_sup[facenum].styles[i] = bsp->dfaces[facenum].styles[i];
}
else
{
LightFace(bsp->dfaces + facenum, NULL, face_modelinfo, ctx);
LightFace(bsp->dfaces + facenum, faces_sup + facenum, face_modelinfo, ctx);
}
LightFaceShutdown(ctx);
}
return NULL;
}
static void
FindModelInfo(const bsp2_t *bsp, const char *lmscaleoverride)
{
int i, shadow, numshadowmodels, numselfshadowmodels;
entity_t *entity;
char modelname[20];
const char *attribute;
const modelinfo_t **shadowmodels;
const modelinfo_t **selfshadowmodels;
modelinfo_t *info;
float lightmapscale;
shadowmodels = (const modelinfo_t **)malloc(sizeof(modelinfo_t *) * (bsp->nummodels + 1));
memset(shadowmodels, 0, sizeof(modelinfo_t *) * (bsp->nummodels + 1));
selfshadowmodels = (const modelinfo_t **)malloc(sizeof(modelinfo_t *) * (bsp->nummodels + 1));
memset(selfshadowmodels, 0, sizeof(modelinfo_t *) * (bsp->nummodels + 1));
/* The world always casts shadows */
shadowmodels[0] = &modelinfo[0];
numshadowmodels = 1;
numselfshadowmodels = 0;
memset(modelinfo, 0, sizeof(*modelinfo) * bsp->nummodels);
modelinfo[0].model = &bsp->dmodels[0];
if (lmscaleoverride)
SetWorldKeyValue("_lightmap_scale", lmscaleoverride);
lightmapscale = atoi(WorldValueForKey("_lightmap_scale"));
if (!lightmapscale)
lightmapscale = 16; /* the default */
if (lightmapscale <= 0)
Error("lightmap scale is 0 or negative\n");
if (lmscaleoverride || lightmapscale != 16)
logprint("Forcing lightmap scale of %gqu\n", lightmapscale);
/*I'm going to do this check in the hopes that there's a benefit to cheaper scaling in engines (especially software ones that might be able to just do some mip hacks). This tool doesn't really care.*/
for (i = 1; i < lightmapscale;)
i++;
if (i != lightmapscale)
logprint("WARNING: lightmap scale is not a power of 2\n");
modelinfo[0].lightmapscale = lightmapscale;
for (i = 1, info = modelinfo + 1; i < bsp->nummodels; i++, info++) {
info->model = &bsp->dmodels[i];
info->lightmapscale = lightmapscale;
/* Find the entity for the model */
snprintf(modelname, sizeof(modelname), "*%d", i);
entity = FindEntityWithKeyPair("model", modelname);
if (!entity)
Error("%s: Couldn't find entity for model %s.\n", __func__,
modelname);
/* Check if this model will cast shadows (shadow => shadowself) */
shadow = atoi(ValueForKey(entity, "_shadow"));
if (shadow) {
shadowmodels[numshadowmodels++] = info;
} else {
shadow = atoi(ValueForKey(entity, "_shadowself"));
if (shadow) {
info->shadowself = true;
selfshadowmodels[numselfshadowmodels++] = info;
}
}
/* Set up the offset for rotate_* entities */
attribute = ValueForKey(entity, "classname");
if (!strncmp(attribute, "rotate_", 7))
GetVectorForKey(entity, "origin", info->offset);
/* Grab the bmodel minlight values, if any */
attribute = ValueForKey(entity, "_minlight");
if (attribute[0])
info->minlight.light = atoi(attribute);
GetVectorForKey(entity, "_mincolor", info->minlight.color);
normalize_color_format(info->minlight.color);
if (!VectorCompare(info->minlight.color, vec3_origin)) {
if (!write_litfile)
write_litfile = scaledonly?2:1;
} else {
VectorCopy(vec3_white, info->minlight.color);
}
/* Check for disabled dirtmapping on this bmodel */
if (atoi(ValueForKey(entity, "_dirt")) == -1) {
info->nodirt = true;
}
/* Check for phong shading */
// handle "_phong" and "_phong_angle"
info->phongangle = atof(ValueForKey(entity, "_phong_angle"));
const int phong = atoi(ValueForKey(entity, "_phong"));
if (phong && (info->phongangle == 0.0)) {
info->phongangle = 89.0; // default _phong_angle
}
}
tracelist = shadowmodels;
selfshadowlist = selfshadowmodels;
}
static float
AngleBetweenVectors(const vec3_t d1, const vec3_t d2)
{
float cosangle = DotProduct(d1, d2)/(VectorLength(d1)*VectorLength(d2));
if (cosangle < -1) cosangle = -1;
if (cosangle > 1) cosangle = 1;
float angle = acos(cosangle);
return angle;
}
/* returns the angle between vectors p2->p1 and p2->p3 */
static float
AngleBetweenPoints(const vec3_t p1, const vec3_t p2, const vec3_t p3)
{
vec3_t d1, d2;
VectorSubtract(p1, p2, d1);
VectorSubtract(p3, p2, d2);
float result = AngleBetweenVectors(d1, d2);
return result;
}
static vec_t
TriangleArea(const vec3_t v0, const vec3_t v1, const vec3_t v2)
{
vec3_t edge0, edge1, cross;
VectorSubtract(v2, v0, edge0);
VectorSubtract(v1, v0, edge1);
CrossProduct(edge0, edge1, cross);
return VectorLength(cross) * 0.5;
}
class vec3_struct_t {
public:
vec3_t v;
vec3_struct_t() {
VectorSet(v, 0, 0, 0);
}
};
std::map<const bsp2_dface_t *, std::vector<vec3_struct_t>> vertex_normals;
/* given a triangle, just adds the contribution from the triangle to the given vertexes normals, based upon angles at the verts.
* v1, v2, v3 are global vertex indices */
static void
AddTriangleNormals(std::map<int, vec3_struct_t> &smoothed_normals, const vec_t *norm, const dvertex_t *verts, int v1, int v2, int v3)
{
const vec_t *p1 = verts[v1].point;
const vec_t *p2 = verts[v2].point;
const vec_t *p3 = verts[v3].point;
float weight;
float area = TriangleArea(p1, p2, p3);
weight = AngleBetweenPoints(p2, p1, p3) * area;
VectorMA(smoothed_normals[v1].v, weight, norm, smoothed_normals[v1].v);
weight = AngleBetweenPoints(p1, p2, p3) * area;
VectorMA(smoothed_normals[v2].v, weight, norm, smoothed_normals[v2].v);
weight = AngleBetweenPoints(p1, p3, p2) * area;
VectorMA(smoothed_normals[v3].v, weight, norm, smoothed_normals[v3].v);
}
/* small helper that just retrieves the correct vertex from face->surfedge->edge lookups */
static int GetSurfaceVertex(const bsp2_t *bsp, const bsp2_dface_t *f, int v)
{
int edge = f->firstedge + v;
edge = bsp->dsurfedges[edge];
if (edge < 0)
return bsp->dedges[-edge].v[1];
return bsp->dedges[edge].v[0];
}
static void
Face_Normal(const bsp2_t *bsp, const bsp2_dface_t *f, vec3_t norm)
{
if (f->side)
VectorSubtract(vec3_origin, bsp->dplanes[f->planenum].normal, norm);
else
VectorCopy(bsp->dplanes[f->planenum].normal, norm);
}
const vec_t *GetSurfaceVertexNormal(const bsp2_t *bsp, const bsp2_dface_t *f, const int vertindex)
{
const auto &face_normals_vector = vertex_normals[f];
return face_normals_vector[vertindex].v;
}
static void
CalcualateVertexNormals(const bsp2_t *bsp)
{
// clear in case we are run twice
vertex_normals.clear();
// read _phong and _phong_angle from entities for compatiblity with other qbsp's, at the expense of no
// support on func_detail/func_group
for (int i=0; i<bsp->nummodels; i++) {
const modelinfo_t *info = &modelinfo[i];
const uint8_t phongangle_byte = (uint8_t) qmax(0, qmin(255, (int)rint(info->phongangle)));
if (!phongangle_byte)
continue;
for (int j=info->model->firstface; j < info->model->firstface + info->model->numfaces; j++) {
const bsp2_dface_t *f = &bsp->dfaces[j];
extended_texinfo_flags[f->texinfo] &= ~(TEX_PHONG_ANGLE_MASK);
extended_texinfo_flags[f->texinfo] |= (phongangle_byte << TEX_PHONG_ANGLE_SHIFT);
}
}
// build "vert index -> faces" map
std::map<int, std::vector<const bsp2_dface_t *>> vertsToFaces;
for (int i = 0; i < bsp->numfaces; i++) {
const bsp2_dface_t *f = &bsp->dfaces[i];
for (int j = 0; j < f->numedges; j++) {
const int v = GetSurfaceVertex(bsp, f, j);
vertsToFaces[v].push_back(f);
}
}
// build the "face -> faces to smooth with" map
std::map<const bsp2_dface_t *, std::set<const bsp2_dface_t *>> smoothFaces;
for (int i = 0; i < bsp->numfaces; i++) {
bsp2_dface_t *f = &bsp->dfaces[i];
vec3_t f_norm;
Face_Normal(bsp, f, f_norm);
// any face normal within this many degrees can be smoothed with this face
const int f_smoothangle = (extended_texinfo_flags[f->texinfo] & TEX_PHONG_ANGLE_MASK) >> TEX_PHONG_ANGLE_SHIFT;
if (!f_smoothangle)
continue;
for (int j = 0; j < f->numedges; j++) {
const int v = GetSurfaceVertex(bsp, f, j);
// walk over all faces incident to f (we will walk over neighbours multiple times, doesn't matter)
for (const bsp2_dface_t *f2 : vertsToFaces[v]) {
if (f2 == f)
continue;
const int f2_smoothangle = (extended_texinfo_flags[f2->texinfo] & TEX_PHONG_ANGLE_MASK) >> TEX_PHONG_ANGLE_SHIFT;
if (!f2_smoothangle)
continue;
vec3_t f2_norm;
Face_Normal(bsp, f2, f2_norm);
const vec_t angle = acos(DotProduct(f_norm, f2_norm));
const vec_t max_angle = DEG2RAD(qmin(f_smoothangle, f2_smoothangle));
// check the angle between the face normals
if (angle < max_angle) {
smoothFaces[f].insert(f2);
}
}
}
}
// finally do the smoothing for each face
for (int i = 0; i < bsp->numfaces; i++)
{
const bsp2_dface_t *f = &bsp->dfaces[i];
const auto &neighboursToSmooth = smoothFaces[f];
vec3_t f_norm;
// get the face normal
Face_Normal(bsp, f, f_norm);
// gather up f and neighboursToSmooth
std::vector<const bsp2_dface_t *> fPlusNeighbours;
fPlusNeighbours.push_back(f);
for (auto neighbour : neighboursToSmooth) {
fPlusNeighbours.push_back(neighbour);
}
// global vertex index -> smoothed normal
std::map<int, vec3_struct_t> smoothedNormals;
// walk fPlusNeighbours
for (auto f2 : fPlusNeighbours) {
vec3_t f2_norm;
Face_Normal(bsp, f2, f2_norm);
/* now just walk around the surface as a triangle fan */
int v1, v2, v3;
v1 = GetSurfaceVertex(bsp, f2, 0);
v2 = GetSurfaceVertex(bsp, f2, 1);
for (int j = 2; j < f2->numedges; j++)
{
v3 = GetSurfaceVertex(bsp, f2, j);
AddTriangleNormals(smoothedNormals, f2_norm, bsp->dvertexes, v1, v2, v3);
v2 = v3;
}
}
// normalize vertex normals
for (auto &pair : smoothedNormals) {
const int vertIndex = pair.first;
vec_t *vertNormal = pair.second.v;
if (0 == VectorNormalize(vertNormal)) {
logprint("Failed to calculate normal for vertex %d at (%f %f %f)\n",
vertIndex,
bsp->dvertexes[vertIndex].point[0],
bsp->dvertexes[vertIndex].point[1],
bsp->dvertexes[vertIndex].point[2]);
VectorCopy(f_norm, vertNormal);
}
}
// sanity check
if (!neighboursToSmooth.size()) {
for (auto vertIndexNormalPair : smoothedNormals) {
assert(VectorCompare(vertIndexNormalPair.second.v, f_norm));
}
}
// now, record all of the smoothed normals that are actually part of `f`
for (int j=0; j<f->numedges; j++) {
int v = GetSurfaceVertex(bsp, f, j);
assert(smoothedNormals.find(v) != smoothedNormals.end());
vertex_normals[f].push_back(smoothedNormals[v]);
}
}
}
/*
* =============
* LightWorld
* =============
*/
static void
LightWorld(bspdata_t *bspdata, qboolean forcedscale)
{
bsp2_t *const bsp = &bspdata->data.bsp2;
const unsigned char *lmshift_lump;
int i, j;
if (bsp->dlightdata)
free(bsp->dlightdata);
if (lux_buffer)
free(lux_buffer);
/* FIXME - remove this limit */
bsp->lightdatasize = MAX_MAP_LIGHTING;
bsp->dlightdata = (byte *)malloc(bsp->lightdatasize + 16); /* for alignment */
if (!bsp->dlightdata)
Error("%s: allocation of %i bytes failed.",
__func__, bsp->lightdatasize);
memset(bsp->dlightdata, 0, bsp->lightdatasize + 16);
bsp->lightdatasize /= 4;
/* align filebase to a 4 byte boundary */
filebase = file_p = (byte *)(((uintptr_t)bsp->dlightdata + 3) & ~3);
file_end = filebase + bsp->lightdatasize;
/* litfile data stored in dlightdata, after the white light */
lit_filebase = file_end + 12 - ((uintptr_t)file_end % 12);
lit_file_p = lit_filebase;
lit_file_end = lit_filebase + 3 * (MAX_MAP_LIGHTING / 4);
/* lux data stored in a separate buffer */
lux_buffer = (byte *)malloc(bsp->lightdatasize*3);
lux_filebase = lux_buffer + 12 - ((uintptr_t)lux_buffer % 12);
lux_file_p = lux_filebase;
lux_file_end = lux_filebase + 3 * (MAX_MAP_LIGHTING / 4);
if (forcedscale)
BSPX_AddLump(bspdata, "LMSHIFT", NULL, 0);
lmshift_lump = (const unsigned char *)BSPX_GetLump(bspdata, "LMSHIFT", NULL);
if (!lmshift_lump && write_litfile != ~0)
faces_sup = NULL; //no scales, no lit2
else
{ //we have scales or lit2 output. yay...
faces_sup = (facesup_t *)malloc(sizeof(*faces_sup) * bsp->numfaces);
memset(faces_sup, 0, sizeof(*faces_sup) * bsp->numfaces);
if (lmshift_lump)
{
for (i = 0; i < bsp->numfaces; i++)
faces_sup[i].lmscale = 1<<lmshift_lump[i];
}
else
{
for (i = 0; i < bsp->numfaces; i++)
faces_sup[i].lmscale = modelinfo[0].lightmapscale;
}
}
CalcualateVertexNormals(bsp);
RunThreadsOn(0, bsp->numfaces, LightThread, bsp);
logprint("Lighting Completed.\n\n");
bsp->lightdatasize = file_p - filebase;
logprint("lightdatasize: %i\n", bsp->lightdatasize);
if (faces_sup)
{
uint8_t *styles = (uint8_t *)malloc(sizeof(*styles)*4*bsp->numfaces);
int32_t *offsets = (int32_t *)malloc(sizeof(*offsets)*bsp->numfaces);
for (i = 0; i < bsp->numfaces; i++)
{
offsets[i] = faces_sup[i].lightofs;
for (j = 0; j < MAXLIGHTMAPS; j++)
styles[i*4+j] = faces_sup[i].styles[j];
}
BSPX_AddLump(bspdata, "LMSTYLE", styles, sizeof(*styles)*4*bsp->numfaces);
BSPX_AddLump(bspdata, "LMOFFSET", offsets, sizeof(*offsets)*bsp->numfaces);
}
else
{ //kill this stuff if its somehow found.
BSPX_AddLump(bspdata, "LMSTYLE", NULL, 0);
BSPX_AddLump(bspdata, "LMOFFSET", NULL, 0);
}
}
static void
LoadExtendedTexinfoFlags(const char *sourcefilename, const bsp2_t *bsp)
{
char filename[1024];
// always create the zero'ed array
extended_texinfo_flags = (uint32_t *) calloc(bsp->numtexinfo, sizeof(uint32_t));
strcpy(filename, sourcefilename);
StripExtension(filename);
DefaultExtension(filename, ".texinfo");
FILE *texinfofile = fopen(filename, "rt");
if (!texinfofile)
return;
logprint("Loaded extended texinfo flags from %s\n", filename);
for (int i = 0; i < bsp->numtexinfo; i++) {
int cnt = fscanf(texinfofile, "%u\n", &extended_texinfo_flags[i]);
if (cnt != 1) {
logprint("WARNING: Extended texinfo flags in %s does not match bsp, ignoring\n", filename);
fclose(texinfofile);
memset(extended_texinfo_flags, 0, bsp->numtexinfo * sizeof(uint32_t));
return;
}
}
// fail if there are more lines in the file
if (fgetc(texinfofile) != EOF) {
logprint("WARNING: Extended texinfo flags in %s does not match bsp, ignoring\n", filename);
fclose(texinfofile);
memset(extended_texinfo_flags, 0, bsp->numtexinfo * sizeof(uint32_t));
return;
}
fclose(texinfofile);
}
/*
* ==================
* main
* light modelfile
* ==================
*/
int
main(int argc, const char **argv)
{
bspdata_t bspdata;
bsp2_t *const bsp = &bspdata.data.bsp2;
int32_t loadversion;
int i;
double start;
double end;
char source[1024];
const char *lmscaleoverride = NULL;
init_log("light.log");
logprint("---- light / TyrUtils " stringify(TYRUTILS_VERSION) " ----\n");
LowerProcessPriority();
numthreads = GetDefaultThreads();
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-threads")) {
numthreads = atoi(argv[++i]);
} else if (!strcmp(argv[i], "-extra")) {
oversample = 2;
logprint("extra 2x2 sampling enabled\n");
} else if (!strcmp(argv[i], "-extra4")) {
oversample = 4;
logprint("extra 4x4 sampling enabled\n");
} else if (!strcmp(argv[i], "-dist")) {
scaledist = atof(argv[++i]);
} else if (!strcmp(argv[i], "-range")) {
rangescale = atof(argv[++i]);
} else if (!strcmp(argv[i], "-gate")) {
fadegate = atof(argv[++i]);
} else if (!strcmp(argv[i], "-light")) {
minlight.light = atof(argv[++i]);
} else if (!strcmp(argv[i], "-addmin")) {
addminlight = true;
} else if (!strcmp(argv[i], "-gamma")) {
lightmapgamma = atof(argv[++i]);
logprint( "Lightmap gamma %f specified on command-line.\n", lightmapgamma );
} else if (!strcmp(argv[i], "-lit")) {
write_litfile |= 1;
} else if (!strcmp(argv[i], "-lit2")) {
write_litfile = ~0;
} else if (!strcmp(argv[i], "-lux")) {
write_luxfile |= 1;
} else if (!strcmp(argv[i], "-bspxlit")) {
write_litfile |= 2;
} else if (!strcmp(argv[i], "-bspxlux")) {
write_luxfile |= 2;
} else if (!strcmp(argv[i], "-bspxonly")) {
write_litfile = 2;
write_luxfile = 2;
scaledonly = true;
} else if (!strcmp(argv[i], "-bspx")) {
write_litfile |= 2;
write_luxfile |= 2;
} else if (!strcmp(argv[i], "-novanilla")) {
scaledonly = true;
} else if ( !strcmp( argv[ i ], "-lmscale" ) ) {
lmscaleoverride = argv[++i];
} else if ( !strcmp( argv[ i ], "-lightturb" ) ) {
lightturb |= 15;
} else if ( !strcmp( argv[ i ], "-lightwater" ) ) {
lightturb |= 1;
} else if ( !strcmp( argv[ i ], "-lightslime" ) ) {
lightturb |= 2;
} else if ( !strcmp( argv[ i ], "-lightlava" ) ) {
lightturb |= 4;
} else if ( !strcmp( argv[ i ], "-lighttele" ) ) {
lightturb |= 8;
} else if (!strcmp(argv[i], "-soft")) {
if (i < argc - 2 && isdigit(argv[i + 1][0]))
softsamples = atoi(argv[++i]);
else
softsamples = -1; /* auto, based on oversampling */
} else if (!strcmp(argv[i], "-anglescale") || !strcmp(argv[i], "-anglesense")) {
if (i < argc - 2 && isdigit(argv[i + 1][0]))
anglescale = sun_anglescale = atoi(argv[++i]);
else
Error("-anglesense requires a numeric argument (0.0 - 1.0)");
} else if ( !strcmp( argv[ i ], "-dirt" ) || !strcmp( argv[ i ], "-dirty" ) ) {
dirty = true;
globalDirt = true;
minlightDirt = true;
logprint( "Dirtmapping enabled globally\n" );
} else if ( !strcmp( argv[ i ], "-dirtdebug" ) || !strcmp( argv[ i ], "-debugdirt" ) ) {
dirty = true;
globalDirt = true;
dirtDebug = true;
logprint( "Dirtmap debugging enabled\n" );
} else if ( !strcmp( argv[ i ], "-dirtmode" ) ) {
dirtModeSetOnCmdline = true;
dirtMode = atoi( argv[ ++i ] );
if ( dirtMode != 0 && dirtMode != 1 ) {
dirtMode = 0;
}
if ( dirtMode == 1 ) {
logprint( "Enabling randomized dirtmapping\n" );
}
else{
logprint( "Enabling ordered dirtmapping\n" );
}
} else if ( !strcmp( argv[ i ], "-dirtdepth" ) ) {
dirtDepthSetOnCmdline = true;
dirtDepth = atof( argv[ ++i ] );
if ( dirtDepth <= 0.0f ) {
dirtDepth = 128.0f;
}
logprint( "Dirtmapping depth set to %.1f\n", dirtDepth );
} else if ( !strcmp( argv[ i ], "-dirtscale" ) ) {
dirtScaleSetOnCmdline = true;
dirtScale = atof( argv[ ++i ] );
if ( dirtScale <= 0.0f ) {
dirtScale = 1.0f;
}
logprint( "Dirtmapping scale set to %.1f\n", dirtScale );
} else if ( !strcmp( argv[ i ], "-dirtgain" ) ) {
dirtGainSetOnCmdline = true;
dirtGain = atof( argv[ ++i ] );
if ( dirtGain <= 0.0f ) {
dirtGain = 1.0f;
}
logprint( "Dirtmapping gain set to %.1f\n", dirtGain );
} else if ( !strcmp( argv[ i ], "-dirtangle" ) ) {
dirtAngleSetOnCmdline = true;
dirtAngle = atof( argv[ ++i ] );
logprint( "Dirtmapping cone angle set to %.1f\n", dirtAngle );
} else if ( !strcmp( argv[ i ], "-fence" ) ) {
testFenceTextures = true;
logprint( "Fence texture tracing enabled on command line\n" );
} else if ( !strcmp( argv[ i ], "-surflight_subdivide" ) ) {
surflight_subdivide = atof( argv[ ++i ] );
surflight_subdivide = qmin(qmax(surflight_subdivide, 64.0f), 2048.0f);
logprint( "Using surface light subdivision size of %f\n", surflight_subdivide);
} else if ( !strcmp( argv[ i ], "-surflight_dump" ) ) {
surflight_dump = true;
} else if ( !strcmp( argv[ i ], "-sunsamples" ) ) {
sunsamples = atof( argv[ ++i ] );
sunsamples = qmin(qmax(sunsamples, 8), 2048);
logprint( "Using sunsamples of %d\n", sunsamples);
} else if ( !strcmp( argv[ i ], "-onlyents" ) ) {
onlyents = true;
logprint( "Onlyents mode enabled\n" );
} else if ( !strcmp( argv[ i ], "-parse_escape_sequences" ) ) {
parse_escape_sequences = true;
logprint( "Parsing escape sequences enabled\n" );
} else if ( !strcmp( argv[ i ], "-phongdebug" ) ) {
phongDebug = true;
write_litfile |= 1;
logprint( "Phong shading debug mode enabled\n" );
} else if (argv[i][0] == '-')
Error("Unknown option \"%s\"", argv[i]);
else
break;
}
if (i != argc - 1) {
printf("usage: light [-threads num] [-extra|-extra4]\n"
" [-light num] [-addmin] [-anglescale|-anglesense]\n"
" [-lightturb] [-lightwater] [-lightslime] [-lightlava] [-lighttele]\n"
" [-dist n] [-range n] [-gate n] [-lit|-lit2] [-lux] [-bspx] [-lmscale n]\n"
" [-dirt] [-dirtdebug] [-dirtmode n] [-dirtdepth n] [-dirtscale n] [-dirtgain n] [-dirtangle n]\n"
" [-soft [n]] [-fence] [-gamma n] [-surflight_subdivide n] [-surflight_dump] [-onlyents] [-sunsamples n] [-parse_escape_sequences] [-phongdebug] bspfile\n");
exit(1);
}
if (numthreads > 1)
logprint("running with %d threads\n", numthreads);
if (write_litfile == ~0)
logprint("generating lit2 output only.\n");
else
{
if (write_litfile & 1)
logprint(".lit colored light output requested on command line.\n");
if (write_litfile & 2)
logprint("BSPX colored light output requested on command line.\n");
if (write_luxfile & 1)
logprint(".lux light directions output requested on command line.\n");
if (write_luxfile & 2)
logprint("BSPX light directions output requested on command line.\n");
}
if (softsamples == -1) {
switch (oversample) {
case 2:
softsamples = 1;
break;
case 4:
softsamples = 2;
break;
default:
softsamples = 0;
break;
}
}
start = I_FloatTime();
strcpy(source, argv[i]);
strcpy(mapfilename, argv[i]);
// delete previous litfile
StripExtension(source);
DefaultExtension(source, ".lit");
remove(source);
StripExtension(source);
DefaultExtension(source, ".bsp");
LoadBSPFile(source, &bspdata);
loadversion = bspdata.version;
if (bspdata.version != BSP2VERSION)
ConvertBSPFormat(BSP2VERSION, &bspdata);
LoadExtendedTexinfoFlags(source, bsp);
LoadEntities(bsp);
modelinfo = (modelinfo_t *)malloc(bsp->nummodels * sizeof(*modelinfo));
FindModelInfo(bsp, lmscaleoverride);
SetupLights(bsp);
if (!onlyents)
{
if (dirty)
SetupDirt();
MakeTnodes_embree(bsp);
LightWorld(&bspdata, !!lmscaleoverride);
/*invalidate any bspx lighting info early*/
BSPX_AddLump(&bspdata, "RGBLIGHTING", NULL, 0);
BSPX_AddLump(&bspdata, "LIGHTINGDIR", NULL, 0);
if (write_litfile == ~0)
{
WriteLitFile(bsp, faces_sup, source, 2);
return 0; //run away before any files are written
}
else
{
/*fixme: add a new per-surface offset+lmscale lump for compat/versitility?*/
if (write_litfile & 1)
WriteLitFile(bsp, faces_sup, source, LIT_VERSION);
if (write_litfile & 2)
BSPX_AddLump(&bspdata, "RGBLIGHTING", lit_filebase, bsp->lightdatasize*3);
if (write_luxfile & 1)
WriteLuxFile(bsp, source, LIT_VERSION);
if (write_luxfile & 2)
BSPX_AddLump(&bspdata, "LIGHTINGDIR", lux_filebase, bsp->lightdatasize*3);
}
}
/* -novanilla + internal lighting = no grey lightmap */
if (scaledonly && (write_litfile & 2))
bsp->lightdatasize = 0;
WriteEntitiesToString(bsp);
/* Convert data format back if necessary */
if (loadversion != BSP2VERSION)
ConvertBSPFormat(loadversion, &bspdata);
WriteBSPFile(source, &bspdata);
end = I_FloatTime();
logprint("%5.1f seconds elapsed\n", end - start);
close_log();
free(modelinfo);
return 0;
}
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