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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 <cstdint>
#include <cassert>
#include <cstdio>
#include <light/light.hh>
#include <light/entities.hh>
#include <common/polylib.h>
#ifdef HAVE_EMBREE
#include <xmmintrin.h>
#include <pmmintrin.h>
#endif
#include <vector>
#include <map>
#include <unordered_map>
#include <set>
#include <algorithm>
#include <mutex>
#include <string>
using namespace std;
using strings = std::vector<std::string>;
//
// worldspawn keys / command-line settings
//
lockable_vec_t scaledist {"dist", 1.0, 0.0f, 100.0f};
lockable_vec_t rangescale {"range", 0.5f, 0.0f, 100.0f};
lockable_vec_t global_anglescale {strings{"anglescale", "anglesense"}, 0.5, 0.0f, 1.0f};
lockable_vec_t lightmapgamma {"gamma", 1.0, 0.0f, 100.0f};
lockable_bool_t addminlight {"addmin", false};
lockable_vec_t minlight {"light", 0};
lockable_vec3_t minlight_color {strings{"minlight_color", "mincolor"}, 255.0f, 255.0f, 255.0f, vec3_transformer_t::NORMALIZE_COLOR_TO_255};
/* dirt */
lockable_bool_t globalDirt {strings{"dirt", "dirty"}, false};
lockable_vec_t dirtMode {"dirtmode", 0.0f};
lockable_vec_t dirtDepth {"dirtdepth", 128.0f, 1.0f, std::numeric_limits<float>::infinity()};
lockable_vec_t dirtScale {"dirtscale", 1.0f, 0.0f, 100.0f};
lockable_vec_t dirtGain {"dirtgain", 1.0f, 0.0f, 100.0f};
lockable_vec_t dirtAngle {"dirtangle", 88.0f, 0.0f, 90.0f};
lockable_bool_t minlightDirt {"minlight_dirt", false};
/* phong */
lockable_bool_t phongallowed {"phong", true};
/* bounce */
lockable_bool_t bounce {"bounce", false};
lockable_vec_t bouncescale {"bouncescale", 1.0f, 0.0f, 100.0f};
lockable_vec_t bouncecolorscale {"bouncecolorscale", 0.0f, 0.0f, 1.0f};
/* sun */
lockable_vec_t sunlight { "sunlight", 0.0f }; /* main sun */
lockable_vec3_t sunlight_color { "sunlight_color", 255.0f, 255.0f, 255.0f, vec3_transformer_t::NORMALIZE_COLOR_TO_255 };
lockable_vec_t sun2 { "sun2", 0.0f }; /* second sun */
lockable_vec3_t sun2_color { "sun2_color", 255.0f, 255.0f, 255.0f, vec3_transformer_t::NORMALIZE_COLOR_TO_255 };
lockable_vec_t sunlight2 { "sunlight2", 0.0f }; /* top sky dome */
lockable_vec3_t sunlight2_color { strings{"sunlight2_color", "sunlight_color2"}, 255.0f, 255.0f, 255.0f, vec3_transformer_t::NORMALIZE_COLOR_TO_255 };
lockable_vec_t sunlight3 { "sunlight3", 0.0f }; /* bottom sky dome */
lockable_vec3_t sunlight3_color { strings{"sunlight3_color", "sunlight_color3"}, 255.0f, 255.0f, 255.0f, vec3_transformer_t::NORMALIZE_COLOR_TO_255 };
lockable_vec_t sunlight_dirt { "sunlight_dirt", 0.0f };
lockable_vec_t sunlight2_dirt { "sunlight2_dirt", 0.0f };
lockable_vec3_t sunvec { strings{"sunlight_mangle", "sun_mangle"}, 0.0f, -90.0f, 0.0f, vec3_transformer_t::MANGLE_TO_VEC }; /* defaults to straight down */
lockable_vec3_t sun2vec { "sun2_mangle", 0.0f, -90.0f, 0.0f, vec3_transformer_t::MANGLE_TO_VEC }; /* defaults to straight down */
lockable_vec_t sun_deviance { "sunlight_penumbra", 0.0f, 0.0f, 180.0f };
bool dirt_in_use = false;
float fadegate = EQUAL_EPSILON;
int softsamples = 0;
const vec3_t vec3_white = { 255, 255, 255 };
float surflight_subdivide = 128.0f;
int sunsamples = 64;
qboolean scaledonly = 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
std::vector<modelinfo_t> modelinfo;
std::vector<const modelinfo_t *> tracelist;
std::vector<const modelinfo_t *> 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 novis = false; /* if true, don't use vis data */
bool nolights = false;
backend_t rtbackend = backend_embree;
debugmode_t debugmode = debugmode_none;
uint32_t *extended_texinfo_flags = NULL;
char mapfilename[1024];
struct ltface_ctx *ltface_ctxs;
int dump_facenum = -1;
bool dump_face;
vec3_t dump_face_point = {0,0,0};
int dump_vertnum = -1;
bool dump_vert;
vec3_t dump_vert_point = {0,0,0};
settingsdict_t globalsettings;
lockable_setting_t *FindSetting(std::string name) {
return globalsettings.findSetting(name);
}
void SetGlobalSetting(std::string name, std::string value, bool cmdline) {
globalsettings.setSetting(name, value, cmdline);
}
void InitSettings()
{
globalsettings = {{
&minlight,
&addminlight,
&lightmapgamma,
&bounce,
&bouncescale,
&bouncecolorscale,
&minlight_color,
&minlightDirt,
&scaledist,
&rangescale,
&global_anglescale,
&dirtDepth,
&dirtMode,
&dirtScale,
&dirtGain,
&dirtAngle,
&globalDirt,
&sunlight,
&sunvec,
&sunlight_color,
&sun_deviance,
&sunlight_dirt,
&sun2,
&sun2vec,
&sun2_color,
&sunlight2,
&sunlight2_color,
&sunlight2_dirt,
&sunlight3,
&sunlight3_color
}};
}
static void
PrintOptionsSummary(void)
{
logprint("Options summary:\n");
for (lockable_setting_t *setting : globalsettings.allSettings()) {
if (setting->isChanged()) {
logprint(" \"%s\" was set to \"%s\" from %s\n",
setting->primaryName().c_str(),
setting->stringValue().c_str(),
setting->sourceString().c_str());
}
}
}
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;
#ifdef HAVE_EMBREE
_MM_SET_FLUSH_ZERO_MODE(_MM_FLUSH_ZERO_ON);
_MM_SET_DENORMALS_ZERO_MODE(_MM_DENORMALS_ZERO_ON);
#endif
while (1) {
facenum = GetThreadWork();
if (facenum == -1)
break;
ctx = &ltface_ctxs[facenum];
LightFaceInit(bsp, ctx);
/* 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);
}
/* If bouncing, keep lightmaps in memory because we run a second lighting pass.
* Otherwise free memory now, so only (# threads) lightmaps are in memory at a time.
*/
if (!bounce.boolValue()) {
LightFaceShutdown(ctx);
}
}
return NULL;
}
static void *
LightThreadBounce(void *arg)
{
int facenum;
const bsp2_t *bsp = (const bsp2_t *) arg;
const modelinfo_t *face_modelinfo;
struct ltface_ctx *ctx;
while (1) {
facenum = GetThreadWork();
if (facenum == -1)
break;
ctx = &ltface_ctxs[facenum];
/* Find the correct model offset */
face_modelinfo = ModelInfoForFace(bsp, facenum);
if (face_modelinfo == NULL)
continue;
LightFaceIndirect(bsp->dfaces + facenum, NULL, face_modelinfo, ctx);
LightFaceShutdown(ctx);
}
return NULL;
}
static void
FindModelInfo(const bsp2_t *bsp, const char *lmscaleoverride)
{
assert(modelinfo.size() == 0);
assert(tracelist.size() == 0);
assert(selfshadowlist.size() == 0);
modelinfo.reserve(bsp->nummodels);
if (!bsp->nummodels) {
Error("Corrupt .BSP: bsp->nummodels is 0!");
}
if (lmscaleoverride)
SetWorldKeyValue("_lightmap_scale", lmscaleoverride);
float lightmapscale = atoi(WorldValueForKey("_lightmap_scale").c_str());
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.*/
{
int i;
for (i = 1; i < lightmapscale;) {
i++;
}
if (i != lightmapscale) {
logprint("WARNING: lightmap scale is not a power of 2\n");
}
}
/* The world always casts shadows */
modelinfo_t world { &bsp->dmodels[0], lightmapscale };
world.shadow.setFloatValue(1.0f); /* world always casts shadows */
modelinfo.push_back(world);
tracelist.push_back(&modelinfo[0]);
for (int i = 1; i < bsp->nummodels; i++) {
modelinfo_t info { &bsp->dmodels[i], lightmapscale };
/* Find the entity for the model */
std::stringstream ss;
ss << "*" << i;
std::string modelname = ss.str();
const entdict_t *entdict = FindEntDictWithKeyPair("model", modelname);
if (entdict == nullptr)
Error("%s: Couldn't find entity for model %s.\n", __func__,
modelname.c_str());
// apply settings
info.settings.setSettings(*entdict, false);
/* Check if this model will cast shadows (shadow => shadowself) */
if (info.shadow.boolValue()) {
tracelist.push_back(&modelinfo[i]);
} else if (info.shadowself.boolValue()){
selfshadowlist.push_back(&modelinfo[i]);
}
/* Set up the offset for rotate_* entities */
if (EntDict_StringForKey(*entdict, "classname").find("rotate_") == 0) {
EntDict_VectorForKey(*entdict, "origin", info.offset);
} else {
assert(info.offset[0] == 0);
assert(info.offset[1] == 0);
assert(info.offset[2] == 0);
}
/* Enable .lit if needed */
// TODO: move elsewhere?
vec3_t white = {255,255,255};
if (!VectorCompare(white, *info.minlight_color.vec3Value())) {
if (!write_litfile) {
write_litfile = scaledonly?2:1;
}
}
modelinfo.push_back(info);
}
assert(modelinfo.size() == bsp->nummodels);
}
/* return 0 if either vector is zero-length */
static float
AngleBetweenVectors(const vec3_t d1, const vec3_t d2)
{
float length_product = (VectorLength(d1)*VectorLength(d2));
if (length_product == 0)
return 0;
float cosangle = DotProduct(d1, d2)/length_product;
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;
}
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;
std::set<int> interior_verts;
map<const bsp2_dface_t *, set<const bsp2_dface_t *>> smoothFaces;
map<int, vector<const bsp2_dface_t *>> vertsToFaces;
/* 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;
weight = AngleBetweenPoints(p2, p1, p3);
VectorMA(smoothed_normals[v1].v, weight, norm, smoothed_normals[v1].v);
weight = AngleBetweenPoints(p1, p2, p3);
VectorMA(smoothed_normals[v2].v, weight, norm, smoothed_normals[v2].v);
weight = AngleBetweenPoints(p1, p3, p2);
VectorMA(smoothed_normals[v3].v, weight, norm, smoothed_normals[v3].v);
}
/* small helper that just retrieves the correct vertex from face->surfedge->edge lookups */
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];
}
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.at(f);
return face_normals_vector.at(vertindex).v;
}
static bool
FacesOnSamePlane(const std::vector<const bsp2_dface_t *> &faces)
{
if (faces.empty()) {
return false;
}
const int32_t planenum = faces.at(0)->planenum;
for (auto face : faces) {
if (face->planenum != planenum) {
return false;
}
}
return true;
}
static void
Vertex_GetPos(const bsp2_t *bsp, int num, vec3_t out)
{
assert(num >= 0 && num < bsp->numvertexes);
const dvertex_t *v = &bsp->dvertexes[num];
for (int i=0; i<3; i++)
out[i] = v->point[i];
}
plane_t
Face_Plane(const bsp2_t *bsp, const bsp2_dface_t *f)
{
const int vertnum = GetSurfaceVertex(bsp, f, 0);
vec3_t vertpos;
Vertex_GetPos(bsp, vertnum, vertpos);
plane_t res;
Face_Normal(bsp, f, res.normal);
res.dist = DotProduct(vertpos, res.normal);
return res;
}
const bsp2_dface_t *
Face_EdgeIndexSmoothed(const bsp2_t *bsp, const bsp2_dface_t *f, const int edgeindex)
{
if (smoothFaces.find(f) == smoothFaces.end()) {
return nullptr;
}
int v0 = GetSurfaceVertex(bsp, f, edgeindex);
int v1 = GetSurfaceVertex(bsp, f, (edgeindex + 1) % f->numedges);
const auto &v0_faces = vertsToFaces.at(v0);
const auto &v1_faces = vertsToFaces.at(v1);
// find a face f2 that has both verts v0 and v1
for (auto f2 : v0_faces) {
if (f2 == f)
continue;
if (find(v1_faces.begin(), v1_faces.end(), f2) != v1_faces.end()) {
const auto &f_smoothfaces = smoothFaces.at(f);
bool smoothed = (f_smoothfaces.find(f2) != f_smoothfaces.end());
return smoothed ? f2 : nullptr;
}
}
return nullptr;
}
static void
CalcualateVertexNormals(const bsp2_t *bsp)
{
// clear in case we are run twice
vertex_normals.clear();
interior_verts.clear();
smoothFaces.clear();
vertsToFaces.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->phong_angle.floatValue())));
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
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);
}
}
// track "interior" verts, these are in the middle of a face, and mess up normal interpolation
for (int i=0; i<bsp->numvertexes; i++) {
auto &faces = vertsToFaces[i];
if (faces.size() > 1 && FacesOnSamePlane(faces)) {
interior_verts.insert(i);
}
}
//printf("CalcualateVertexNormals: %d interior verts\n", (int)interior_verts.size());
// build the "face -> faces to smooth with" map
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 cosangle = DotProduct(f_norm, f2_norm);
const vec_t cosmaxangle = cos(DEG2RAD(qmin(f_smoothangle, f2_smoothangle)));
// check the angle between the face normals
if (cosangle >= cosmaxangle) {
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)) {
// this happens when there are colinear vertices, which give zero-area triangles,
// so there is no contribution to the normal of the triangle in the middle of the
// line. Not really an error, just set it to use the face normal.
#if 0
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]);
#endif
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)
{
logprint("--- LightWorld ---\n" );
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);
/* ericw -- alloc memory */
ltface_ctxs = (struct ltface_ctx *)calloc(bsp->numfaces, sizeof(struct ltface_ctx));
RunThreadsOn(0, bsp->numfaces, LightThread, bsp);
if (bounce.boolValue()) {
logprint("--- LightThreadBounce ---\n");
RunThreadsOn(0, bsp->numfaces, LightThreadBounce, 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);
}
// radiosity
mutex radlights_lock;
map<string, vec3_struct_t> texturecolors;
std::vector<bouncelight_t> radlights;
class patch_t {
public:
winding_t *w;
vec3_t center;
vec3_t samplepoint; // 1 unit above center
plane_t plane;
vec3_t directlight;
std::vector<plane_t> edgeplanes;
vec3_t indirectlight;
bool pointInPatch(const vec3_t point) {
for (const auto &edgeplane : edgeplanes)
{
/* faces toward the center of the face */
vec_t dist = DotProduct(point, edgeplane.normal) - edgeplane.dist;
if (dist < 0)
return false;
}
return true;
}
};
#if 0
void
GetDirectLighting(const vec3_t origin, const vec3_t normal, vec3_t colorout)
{
const light_t *entity;
light_t **lighte;
VectorSet(colorout, 0, 0, 0);
for (lighte = lights; (entity = *lighte); lighte++)
{
if (!TestLight(entity->origin, origin, NULL))
continue;
vec3_t originLightDir;
VectorSubtract(entity->origin, origin, originLightDir);
vec_t dist = VectorNormalize(originLightDir);
vec_t cosangle = DotProduct(originLightDir, normal);
if (cosangle < 0)
continue;
vec_t lightval = GetLightValue(&entity->light, entity, dist);
VectorMA(colorout, lightval * cosangle / 255.0f, entity->light.color, colorout);
}
for ( sun_t *sun = suns; sun; sun = sun->next )
{
if (!TestSky(origin, sun->sunvec, NULL))
continue;
VectorMA(colorout, sun->sunlight.light / 255.0f, sun->sunlight.color, colorout);
}
}
std::vector<patch_t *> triangleIndexToPatch;
std::unordered_map<int, std::vector<patch_t *>> facenumToPatches;
mutex facenumToPatches_mutex;
#endif
#if 0
void SavePatch (const bsp2_t *bsp, const bsp2_dface_t *sourceface, winding_t *w)
{
int i = sourceface - bsp->dfaces;
patch_t *p = new patch_t;
p->w = w;
// cache some stuff
WindingCenter(p->w, p->center);
WindingPlane(p->w, p->plane.normal, &p->plane.dist);
// HACK: flip the plane
p->plane.dist = -p->plane.dist;
VectorScale(p->plane.normal, -1, p->plane.normal);
VectorMA(p->center, 1, p->plane.normal, p->samplepoint);
// calculate direct light
if (bsp->texinfo[sourceface->texinfo].flags & TEX_SPECIAL) {
VectorSet(p->directlight, 0, 0, 0);
} else {
GetDirectLighting(p->center, p->plane.normal, p->directlight);
VectorScale(p->directlight, 1/255.0, p->directlight);
}
// make edge planes
for (int i=0; i<p->w->numpoints; i++)
{
plane_t dest;
const vec_t *v0 = p->w->p[i];
const vec_t *v1 = p->w->p[(i + 1) % p->w->numpoints];
vec3_t edgevec;
VectorSubtract(v1, v0, edgevec);
VectorNormalize(edgevec);
CrossProduct(edgevec, p->plane.normal, dest.normal);
dest.dist = DotProduct(dest.normal, v0);
p->edgeplanes.push_back(dest);
}
// save
unique_lock<mutex> lck { facenumToPatches_mutex };
facenumToPatches[i].push_back(p);
}
static void *
MakeBounceLightsThread (void *arg)
{
const bsp2_t *bsp = (const bsp2_t *)arg;
while (1) {
int i = GetThreadWork();
if (i == -1)
break;
const bsp2_dface_t *face = &bsp->dfaces[i];
if (bsp->texinfo[face->texinfo].flags & TEX_SPECIAL) {
continue;
}
if (!strcmp("skip", Face_TextureName(bsp, face))) {
continue;
}
winding_t *winding = WindingFromFace(bsp, face);
DicePatch(bsp, face, winding, 1024);
}
return NULL;
}
#endif
void AddBounceLight(const vec3_t pos, const vec3_t color, const vec3_t surfnormal, vec_t area, const bsp2_t *bsp)
{
bouncelight_t l;
VectorCopy(pos, l.pos);
VectorCopy(color, l.color);
VectorCopy(surfnormal, l.surfnormal);
l.area = area;
l.leaf = Light_PointInLeaf(bsp, pos);
unique_lock<mutex> lck { radlights_lock };
radlights.push_back(l);
}
int NumBounceLights()
{
return radlights.size();
}
const bouncelight_t *BounceLightAtIndex(int i)
{
return &radlights.at(i);
}
#if 0
// Returns color in [0,1]
void Texture_AvgColor (const bsp2_t *bsp, const miptex_t *miptex, vec3_t color)
{
VectorSet(color, 0, 0, 0);
if (!bsp->texdatasize)
return;
const byte *data = (byte*)miptex + miptex->offsets[0];
for (int y=0; y<miptex->height; y++) {
for (int x=0; x<miptex->width; x++) {
const int i = data[(miptex->width * y) + x];
vec3_t samplecolor = { (float)thepalette[3*i], (float)thepalette[3*i + 1], (float)thepalette[3*i + 2] };
VectorAdd(color, samplecolor, color);
}
}
VectorScale(color, 1.0 / (miptex->width * miptex->height), color);
VectorScale(color, 1.0 / 255.0, color);
}
void MakeTextureColors (const bsp2_t *bsp)
{
logprint("--- MakeTextureColors ---\n");
if (!bsp->texdatasize)
return;
for (int i=0; i<bsp->dtexdata.header->nummiptex; i++) {
const int ofs = bsp->dtexdata.header->dataofs[i];
if (ofs < 0)
continue;
const miptex_t *miptex = (miptex_t *)(bsp->dtexdata.base + ofs);
string name { miptex->name };
vec3_struct_t color;
Texture_AvgColor(bsp, miptex, color.v);
printf("%s has color %f %f %f\n", name.c_str(), color.v[0], color.v[1], color.v[2]);
texturecolors[name] = color;
}
}
void MakeBounceLights (const bsp2_t *bsp)
{
logprint("--- MakeBounceLights ---\n");
const dmodel_t *model = &bsp->dmodels[0];
RunThreadsOn(model->firstface, model->firstface + model->numfaces, MakeBounceLightsThread, (void *)bsp);
int patches = 0;
//FILE *f = fopen("bounce.map", "w");
for (auto mapentry : facenumToPatches) {
for (auto patch : mapentry.second) {
patches++;
// create VPL
if (patch->directlight[0] > 0
&& patch->directlight[1] > 0
&& patch->directlight[2] > 0) {
bouncelight_t l;
VectorCopy(patch->samplepoint, l.pos);
VectorCopy(patch->directlight, l.color);
VectorCopy(patch->plane.normal, l.surfnormal);
l.area = WindingArea(patch->w);
l.leaf = Light_PointInLeaf(bsp, l.pos);
// scale by texture color
const bsp2_dface_t *f = &bsp->dfaces[mapentry.first];
const char *facename = Face_TextureName(bsp, f);
if (texturecolors.find(facename) != texturecolors.end()) {
vec3_struct_t texcolor = texturecolors.at(facename);
for (int i=0; i<3; i++)
l.color[i] *= texcolor.v[i];
}
radlights.push_back(l);
//fprintf(f, "{\n\"classname\" \"light\"\n\"origin\" \"%f %f %f\"\n}\n", l.pos[0], l.pos[1], l.pos[2]);
}
}
}
//fclose(f);
logprint("created %d patches\n", patches);
logprint("created %d bounce lights\n", (int)radlights.size());
bouncelights = radlights.data();
numbouncelights = radlights.size();
}
#endif
// end radiosity
//obj
static FILE *
InitObjFile(const char *filename)
{
FILE *objfile;
char objfilename[1024];
strcpy(objfilename, filename);
StripExtension(objfilename);
DefaultExtension(objfilename, ".obj");
objfile = fopen(objfilename, "wt");
if (!objfile)
Error("Failed to open %s: %s", objfilename, strerror(errno));
return objfile;
}
static void
ExportObjFace(FILE *f, const bsp2_t *bsp, const bsp2_dface_t *face, int *vertcount)
{
// export the vertices and uvs
for (int i=0; i<face->numedges; i++)
{
int vertnum = GetSurfaceVertex(bsp, face, i);
const vec_t *normal = GetSurfaceVertexNormal(bsp, face, i);
const float *pos = bsp->dvertexes[vertnum].point;
fprintf(f, "v %.9g %.9g %.9g\n", pos[0], pos[1], pos[2]);
fprintf(f, "vn %.9g %.9g %.9g\n", normal[0], normal[1], normal[2]);
}
fprintf(f, "f");
for (int i=0; i<face->numedges; i++) {
// .obj vertexes start from 1
// .obj faces are CCW, quake is CW, so reverse the order
const int vertindex = *vertcount + (face->numedges - 1 - i) + 1;
fprintf(f, " %d//%d", vertindex, vertindex);
}
fprintf(f, "\n");
*vertcount += face->numedges;
}
void
ExportObj(const char *filename, const bsp2_t *bsp)
{
FILE *objfile = InitObjFile(filename);
int vertcount = 0;
const int start = bsp->dmodels[0].firstface;
const int end = bsp->dmodels[0].firstface + bsp->dmodels[0].numfaces;
for (int i=start; i<end; i++) {
ExportObjFace(objfile, bsp, &bsp->dfaces[i], &vertcount);
}
fclose(objfile);
}
//obj
vector<vector<const bsp2_dleaf_t *>> faceleafs;
vector<bool> leafhassky;
// index some stuff from the bsp
void BuildPvsIndex(const bsp2_t *bsp)
{
if (bsp->visdatasize != 0) {
if (novis) {
logprint("skipping visdata optimization because of -novis\n");
} else {
logprint("using visdata optimization\n");
}
}
// build leafsForFace
faceleafs.resize(bsp->numfaces);
for (int i = 0; i < bsp->numleafs; i++) {
const bsp2_dleaf_t *leaf = &bsp->dleafs[i];
for (int k = 0; k < leaf->nummarksurfaces; k++) {
const int facenum = bsp->dmarksurfaces[leaf->firstmarksurface + k];
faceleafs.at(facenum).push_back(leaf);
}
}
// build leafhassky
leafhassky.resize(bsp->numleafs, false);
for (int i = 0; i < bsp->numleafs; i++) {
const bsp2_dleaf_t *leaf = &bsp->dleafs[i];
// search for sky faces in it
for (int k = 0; k < leaf->nummarksurfaces; k++) {
const bsp2_dface_t *surf = &bsp->dfaces[bsp->dmarksurfaces[leaf->firstmarksurface + k]];
const char *texname = Face_TextureName(bsp, surf);
if (!strncmp("sky", texname, 3)) {
leafhassky.at(i) = true;
break;
}
}
}
}
bool Leaf_HasSky(const bsp2_t *bsp, const bsp2_dleaf_t *leaf)
{
const int leafnum = leaf - bsp->dleafs;
return leafhassky.at(leafnum);
}
const bsp2_dleaf_t **Face_CopyLeafList(const bsp2_t *bsp, const bsp2_dface_t *face)
{
const int facenum = face - bsp->dfaces;
auto &leafs = faceleafs.at(facenum);
const bsp2_dleaf_t **result = (const bsp2_dleaf_t **) calloc(leafs.size() + 1, sizeof(const bsp2_dleaf_t *));
for (int i = 0; i<leafs.size(); i++) {
result[i] = leafs.at(i);
}
return result;
}
static void
CheckNoDebugModeSet()
{
if (debugmode != debugmode_none) {
Error("Only one debug mode is allowed at a time");
}
}
// returns the face with a centroid nearest the given point.
static const bsp2_dface_t *
Face_NearestCentroid(const bsp2_t *bsp, const vec3_t point)
{
const bsp2_dface_t *nearest_face = NULL;
vec_t nearest_dist = VECT_MAX;
for (int i=0; i<bsp->numfaces; i++) {
const bsp2_dface_t *f = &bsp->dfaces[i];
vec3_t fc;
FaceCentroid(f, bsp, fc);
vec3_t distvec;
VectorSubtract(fc, point, distvec);
vec_t dist = VectorLength(distvec);
if (dist < nearest_dist) {
nearest_dist = dist;
nearest_face = f;
}
}
return nearest_face;
}
void FindDebugFace(const bsp2_t *bsp)
{
if (!dump_face)
return;
const bsp2_dface_t *f = Face_NearestCentroid(bsp, dump_face_point);
if (f == NULL)
Error("FindDebugFace: f == NULL\n");
const int facenum = f - bsp->dfaces;
dump_facenum = facenum;
const modelinfo_t *mi = ModelInfoForFace(bsp, facenum);
int modelnum = mi - &modelinfo.front();
const char *texname = Face_TextureName(bsp, f);
logprint("FindDebugFace: dumping face %d (texture '%s' model %d)\n", facenum, texname, modelnum);
}
// returns the vert nearest the given point
static int
Vertex_NearestPoint(const bsp2_t *bsp, const vec3_t point)
{
int nearest_vert = -1;
vec_t nearest_dist = VECT_MAX;
for (int i=0; i<bsp->numvertexes; i++) {
const dvertex_t *vertex = &bsp->dvertexes[i];
vec3_t distvec;
VectorSubtract(vertex->point, point, distvec);
vec_t dist = VectorLength(distvec);
if (dist < nearest_dist) {
nearest_dist = dist;
nearest_vert = i;
}
}
return nearest_vert;
}
void FindDebugVert(const bsp2_t *bsp)
{
if (!dump_vert)
return;
int v = Vertex_NearestPoint(bsp, dump_vert_point);
const dvertex_t *vertex = &bsp->dvertexes[v];
logprint("FindDebugVert: dumping vert %d at %f %f %f\n", v,
vertex->point[0],
vertex->point[1],
vertex->point[2]);
dump_vertnum = v;
}
static void PrintUsage()
{
printf("usage: light [options] mapname.bsp\n"
"\n"
"* = also a worldspawn key with underscore prefix; -light becomes \"_light\"\n"
"\n"
"Performance options:\n"
" -threads n set the number of threads\n"
" -extra 2x supersampling\n"
" -extra4 4x supersampling, slowest, use for final compile\n"
" -gate n cutoff lights at this brightness level\n"
" -sunsamples n set samples for _sunlight2, default 64\n"
" -surflight_subdivide surface light subdivision size\n"
"\n"
"Output format options:\n"
" -lit write .lit file\n"
" -onlyents only update entities\n"
"\n"
"Global options:\n"
"* -light n sets global minlight level n\n"
" -addmin additive minlight\n"
"* -anglescale n set weight of cosine term, default 0.5, 1=realistic\n"
" -anglesense n same as -anglescale n\n"
"* -dist n scale fade distance of all lights, default 1\n"
"* -range n scale brightness of all lights, default 0.5\n"
" -phong n 0=disable phong shading\n"
"\n"
"Dirtmapping (ambient occlusion) options:\n"
"* -dirt [n] enable global AO, 0=disable even if set in worldspawn\n"
"* -dirtmode n 0=ordered (default), 1=random AO\n"
"* -dirtdepth n distance for occlusion test, default 128\n"
"* -dirtscale n scale factor for AO, default 1, higher values are darker\n"
"* -dirtgain n exponent for AO, default 1, lower values are darker\n"
"* -dirtangle n maximum angle for AO rays, default 88\n"
"\n"
"Bounce options:\n"
"* -bounce [n] enables 1 bounce, 0=disable even if set in worldspawn\n"
"* -bouncescale n scales brightness of bounce lighting, default 1\n"
"* -bouncecolorscale n how much to use texture colors, 0=none (default), 1=full\n"
"\n"
"Postprocessing options:\n"
"* -gamma n gamma correct final lightmap, default 1.0\n"
" -soft [n] blurs the lightmap, n=blur radius in samples\n"
"\n"
"Debug modes:\n"
" -dirtdebug only save the AO values to the lightmap\n"
" -phongdebug only save the normals to the lightmap\n"
" -bouncedebug only save bounced lighting to the lightmap\n"
" -surflight_dump dump surface lights to a .map file\n"
" -novis disable vis acceleration\n"
"\n"
"Experimental options:\n"
" -lit2 write .lit2 file\n"
"* -lmscale n change lightmap scale, vanilla engines only allow 16\n"
" -lux write .lux file\n"
" -bspxlit writes rgb data into the bsp itself\n"
" -bspx writes both rgb and directions data into the bsp itself\n"
" -novanilla implies -bspxlit. don't write vanilla lighting\n");
}
static bool ParseVec3Optional(vec3_t vec3_out, int *i_inout, int argc, const char **argv)
{
if ((*i_inout + 3) < argc) {
const int start = (*i_inout + 1);
const int end = (*i_inout + 3);
// validate that there are 3 numbers
for (int j=start; j <= end; j++) {
if (argv[j][0] == '-' && isdigit(argv[j][1])) {
continue; // accept '-' followed by a digit for negative numbers
}
// otherwise, reject if the first character is not a digit
if (!isdigit(argv[j][0])) {
return false;
}
}
vec3_out[0] = atof( argv[ ++(*i_inout) ] );
vec3_out[1] = atof( argv[ ++(*i_inout) ] );
vec3_out[2] = atof( argv[ ++(*i_inout) ] );
return true;
} else {
return false;
}
}
static bool ParseVecOptional(vec_t *result, int *i_inout, int argc, const char **argv)
{
if ((*i_inout + 1) < argc) {
if (!isdigit(argv[*i_inout + 1][0])) {
return false;
}
*result = atof( argv[ ++(*i_inout) ] );
return true;
} else {
return false;
}
}
static bool ParseIntOptional(int *result, int *i_inout, int argc, const char **argv)
{
if ((*i_inout + 1) < argc) {
if (!isdigit(argv[*i_inout + 1][0])) {
return false;
}
*result = atoi( argv[ ++(*i_inout) ] );
return true;
} else {
return false;
}
}
static const char *ParseStringOptional(int *i_inout, int argc, const char **argv)
{
if ((*i_inout + 1) < argc) {
return argv[ ++(*i_inout) ];
} else {
return NULL;
}
}
static void ParseVec3(vec3_t vec3_out, int *i_inout, int argc, const char **argv)
{
if (!ParseVec3Optional(vec3_out, i_inout, argc, argv)) {
Error("%s requires 3 numberic arguments\n", argv[ *i_inout ]);
}
}
static vec_t ParseVec(int *i_inout, int argc, const char **argv)
{
vec_t result = 0;
if (!ParseVecOptional(&result, i_inout, argc, argv)) {
Error("%s requires 1 numeric argument\n", argv[ *i_inout ]);
return 0;
}
return result;
}
static int ParseInt(int *i_inout, int argc, const char **argv)
{
int result = 0;
if (!ParseIntOptional(&result, i_inout, argc, argv)) {
Error("%s requires 1 integer argument\n", argv[ *i_inout ]);
return 0;
}
return result;
}
static const char *ParseString(int *i_inout, int argc, const char **argv)
{
const char *result = NULL;
if (!(result = ParseStringOptional(i_inout, argc, argv))) {
Error("%s requires 1 string argument\n", argv[ *i_inout ]);
}
return result;
}
/*
* ==================
* 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();
InitSettings();
for (i = 1; i < argc; i++) {
if (!strcmp(argv[i], "-threads")) {
numthreads = ParseInt(&i, argc, argv);
} 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], "-gate")) {
fadegate = ParseVec(&i, argc, argv);
if (fadegate > 1) {
logprint( "WARNING: -gate value greater than 1 may cause artifacts\n" );
}
} 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], "-soft")) {
if ((i + 1) < argc && isdigit(argv[i + 1][0]))
softsamples = ParseInt(&i, argc, argv);
else
softsamples = -1; /* auto, based on oversampling */
} else if ( !strcmp( argv[ i ], "-dirtdebug" ) || !strcmp( argv[ i ], "-debugdirt" ) ) {
CheckNoDebugModeSet();
globalDirt.setBoolValueLocked(true);
debugmode = debugmode_dirt;
logprint( "Dirtmap debugging enabled\n" );
} else if ( !strcmp( argv[ i ], "-bouncedebug" ) ) {
CheckNoDebugModeSet();
bounce.setBoolValueLocked(true);
debugmode = debugmode_bounce;
logprint( "Bounce debugging mode enabled on command line\n" );
} else if ( !strcmp( argv[ i ], "-surflight_subdivide" ) ) {
surflight_subdivide = ParseVec(&i, argc, argv);
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 = ParseInt(&i, argc, argv);
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 ], "-phongdebug" ) ) {
CheckNoDebugModeSet();
debugmode = debugmode_phong;
write_litfile |= 1;
logprint( "Phong shading debug mode enabled\n" );
} else if ( !strcmp( argv[ i ], "-novis" ) ) {
novis = true;
logprint( "Skipping use of vis data to optimize lighting\n" );
} else if ( !strcmp( argv[ i ], "-nolights" ) ) {
nolights = true;
logprint( "Skipping all light entities (sunlight / minlight only)\n" );
} else if ( !strcmp( argv[ i ], "-backend" ) ) {
const char *requested = ParseString(&i, argc, argv);
if (!strcmp(requested, "bsp")) {
rtbackend = backend_bsp;
} else if (!strcmp(requested, "embree")) {
rtbackend = backend_embree;
} else {
Error("unknown backend %s", requested);
}
} else if ( !strcmp( argv[ i ], "-debugface" ) ) {
ParseVec3(dump_face_point, &i, argc, argv);
dump_face = true;
} else if ( !strcmp( argv[ i ], "-debugvert" ) ) {
ParseVec3(dump_vert_point, &i, argc, argv);
dump_vert = true;
} else if ( !strcmp( argv[ i ], "-help" ) ) {
PrintUsage();
exit(0);
} else if (argv[i][0] == '-') {
// hand over to the settings system
std::string settingname { &argv[i][1] };
lockable_setting_t *setting = FindSetting(settingname);
if (setting == nullptr) {
Error("Unknown option \"-%s\"", settingname.c_str());
PrintUsage();
}
if (lockable_bool_t *boolsetting = dynamic_cast<lockable_bool_t *>(setting)) {
float v;
if (ParseVecOptional(&v, &i, argc, argv)) {
boolsetting->setStringValue(std::to_string(v), true);
} else {
boolsetting->setBoolValueLocked(true);
}
} else if (lockable_vec_t *vecsetting = dynamic_cast<lockable_vec_t *>(setting)) {
vecsetting->setFloatValueLocked(ParseVec(&i, argc, argv));
} else if (lockable_vec3_t *vec3setting = dynamic_cast<lockable_vec3_t *>(setting)) {
vec3_t temp;
ParseVec3(temp, &i, argc, argv);
vec3setting->setVec3ValueLocked(temp);
} else {
Error("Internal error");
}
} else {
break;
}
}
if (i != argc - 1) {
PrintUsage();
exit(1);
}
#ifndef HAVE_EMBREE
if (rtbackend == backend_embree) {
rtbackend = backend_bsp;
}
#endif
logprint("Raytracing backend: ");
switch (rtbackend) {
case backend_bsp: logprint("BSP\n"); break;
case backend_embree: logprint("Embree\n"); break;
}
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
if (!onlyents) {
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);
BuildPvsIndex(bsp);
LoadExtendedTexinfoFlags(source, bsp);
LoadEntities(bsp);
PrintOptionsSummary();
FindModelInfo(bsp, lmscaleoverride);
FindDebugFace(bsp);
FindDebugVert(bsp);
SetupLights(bsp);
if (!onlyents)
{
SetupDirt();
MakeTnodes(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;
#if 0
ExportObj(source, bsp);
#endif
WriteEntitiesToString(bsp);
/* Convert data format back if necessary */
if (loadversion != BSP2VERSION)
ConvertBSPFormat(loadversion, &bspdata);
WriteBSPFile(source, &bspdata);
end = I_FloatTime();
logprint("%5.3f seconds elapsed\n", end - start);
close_log();
return 0;
}
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