299 lines
8.9 KiB
C
299 lines
8.9 KiB
C
/* 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.
|
|
*/
|
|
|
|
#ifndef __LIGHT_LIGHT_H__
|
|
#define __LIGHT_LIGHT_H__
|
|
|
|
#include <common/cmdlib.h>
|
|
#include <common/mathlib.h>
|
|
#include <common/bspfile.h>
|
|
#include <common/log.h>
|
|
#include <common/threads.h>
|
|
#include <common/polylib.h>
|
|
#include <light/litfile.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#define ON_EPSILON 0.1
|
|
#define ANGLE_EPSILON 0.001
|
|
|
|
/*
|
|
* Convenience functions TestLight and TestSky will test against all shadow
|
|
* casting bmodels and self-shadow the model 'self' if self != NULL. Returns
|
|
* true if sky or light is visible, respectively.
|
|
*/
|
|
qboolean TestSky(const vec3_t start, const vec3_t dirn, const dmodel_t *self);
|
|
qboolean TestLight(const vec3_t start, const vec3_t stop, const dmodel_t *self);
|
|
qboolean DirtTrace(const vec3_t start, const vec3_t stop, const dmodel_t *self, vec3_t hitpoint_out, plane_t *hitplane_out, const bsp2_dface_t **face_out);
|
|
|
|
int
|
|
SampleTexture(const bsp2_dface_t *face, const bsp2_t *bsp, const vec3_t point);
|
|
|
|
typedef struct {
|
|
vec_t light;
|
|
vec3_t color;
|
|
vec3_t direction;
|
|
} lightsample_t;
|
|
|
|
typedef struct {
|
|
const dmodel_t *model;
|
|
qboolean shadowself;
|
|
lightsample_t minlight;
|
|
char minlight_exclude[16]; /* texture name to exclude from minlight */
|
|
float lightmapscale;
|
|
vec3_t offset;
|
|
qboolean nodirt;
|
|
vec_t phongangle;
|
|
} modelinfo_t;
|
|
|
|
typedef struct sun_s {
|
|
vec3_t sunvec;
|
|
lightsample_t sunlight;
|
|
struct sun_s *next;
|
|
qboolean dirt;
|
|
float anglescale;
|
|
} sun_t;
|
|
|
|
/* for vanilla this would be 18. some engines allow higher limits though, which will be needed if we're scaling lightmap resolution. */
|
|
/*with extra sampling, lit+lux etc, we need at least 46mb stack space per thread. yes, that's a lot. on the plus side, it doesn't affect bsp complexity (actually, can simplify it a little)*/
|
|
#define MAXDIMENSION (255+1)
|
|
|
|
/* Allow space for 4x4 oversampling */
|
|
//#define SINGLEMAP (MAXDIMENSION*MAXDIMENSION*4*4)
|
|
|
|
typedef struct {
|
|
vec3_t data[3]; /* permuted 3x3 matrix */
|
|
int row[3]; /* row permutations */
|
|
int col[3]; /* column permutations */
|
|
} pmatrix3_t;
|
|
|
|
typedef struct {
|
|
pmatrix3_t transform;
|
|
const texinfo_t *texinfo;
|
|
vec_t planedist;
|
|
} texorg_t;
|
|
|
|
/*Warning: this stuff needs explicit initialisation*/
|
|
typedef struct {
|
|
const modelinfo_t *modelinfo;
|
|
const bsp2_dface_t *face;
|
|
/* these take precedence the values in modelinfo */
|
|
lightsample_t minlight;
|
|
qboolean nodirt;
|
|
|
|
plane_t plane;
|
|
vec3_t snormal;
|
|
vec3_t tnormal;
|
|
|
|
/* 16 in vanilla. engines will hate you if this is not power-of-two-and-at-least-one */
|
|
float lightmapscale;
|
|
qboolean curved; /*normals are interpolated for smooth lighting*/
|
|
|
|
int texmins[2];
|
|
int texsize[2];
|
|
vec_t exactmid[2];
|
|
vec3_t midpoint;
|
|
|
|
int numpoints;
|
|
vec3_t *points; // malloc'ed array of numpoints
|
|
vec3_t *normals; // malloc'ed array of numpoints
|
|
bool *occluded; // malloc'ed array of numpoints
|
|
|
|
/*
|
|
raw ambient occlusion amount per sample point, 0-1, where 1 is
|
|
fully occluded. dirtgain/dirtscale are not applied yet
|
|
*/
|
|
vec_t *occlusion; // malloc'ed array of numpoints
|
|
|
|
/*
|
|
pvs for the entire light surface. generated by ORing together
|
|
the pvs at each of the sample points
|
|
*/
|
|
byte *pvs;
|
|
bool skyvisible;
|
|
|
|
/* for sphere culling */
|
|
vec3_t origin;
|
|
vec_t radius;
|
|
|
|
// for radiosity
|
|
vec3_t radiosity;
|
|
vec3_t texturecolor;
|
|
|
|
/* stuff used by CalcPoint */
|
|
vec_t starts, startt, st_step;
|
|
texorg_t texorg;
|
|
int width, height;
|
|
} lightsurf_t;
|
|
|
|
typedef struct {
|
|
int style;
|
|
lightsample_t *samples; // malloc'ed array of numpoints //FIXME: this is stupid, we shouldn't need to allocate extra data here for -extra4
|
|
} lightmap_t;
|
|
|
|
struct ltface_ctx
|
|
{
|
|
const bsp2_t *bsp;
|
|
lightsurf_t lightsurf;
|
|
lightmap_t lightmaps[MAXLIGHTMAPS + 1];
|
|
};
|
|
|
|
extern struct ltface_ctx *ltface_ctxs;
|
|
|
|
/* bounce lights */
|
|
|
|
typedef struct {
|
|
vec3_t pos;
|
|
vec3_t color;
|
|
vec3_t surfnormal;
|
|
vec_t area;
|
|
const bsp2_dleaf_t *leaf;
|
|
} bouncelight_t;
|
|
|
|
void AddBounceLight(const vec3_t pos, const vec3_t color, const vec3_t surfnormal, vec_t area, const bsp2_t *bsp);
|
|
int NumBounceLights();
|
|
const bouncelight_t *BounceLightAtIndex(int i);
|
|
|
|
extern const bouncelight_t *bouncelights;
|
|
extern int numbouncelights;
|
|
extern byte thepalette[768];
|
|
|
|
/* tracelist is a null terminated array of BSP models to use for LOS tests */
|
|
extern const modelinfo_t *const *tracelist;
|
|
extern const modelinfo_t *const *selfshadowlist;
|
|
|
|
void LightFaceInit(const bsp2_t *bsp, struct ltface_ctx *ctx);
|
|
void LightFaceShutdown(struct ltface_ctx *ctx);
|
|
const modelinfo_t *ModelInfoForFace(const bsp2_t *bsp, int facenum);
|
|
void LightFace(bsp2_dface_t *face, facesup_t *facesup, const modelinfo_t *modelinfo, struct ltface_ctx *ctx);
|
|
void LightFaceIndirect(bsp2_dface_t *face, facesup_t *facesup, const modelinfo_t *modelinfo, struct ltface_ctx *ctx);
|
|
void MakeTnodes(const bsp2_t *bsp);
|
|
|
|
/* access the final phong-shaded vertex normal */
|
|
const vec_t *GetSurfaceVertexNormal(const bsp2_t *bsp, const bsp2_dface_t *f, const int v);
|
|
|
|
const bsp2_dface_t *
|
|
Face_EdgeIndexSmoothed(const bsp2_t *bsp, const bsp2_dface_t *f, const int edgeindex);
|
|
|
|
extern float scaledist;
|
|
extern float rangescale;
|
|
extern float global_anglescale;
|
|
extern float fadegate;
|
|
extern int softsamples;
|
|
extern float lightmapgamma;
|
|
extern const vec3_t vec3_white;
|
|
extern float surflight_subdivide;
|
|
extern int sunsamples;
|
|
|
|
extern qboolean addminlight;
|
|
extern lightsample_t minlight;
|
|
|
|
extern sun_t *suns;
|
|
|
|
/* dirt */
|
|
|
|
extern qboolean dirty; // should any dirtmapping take place?
|
|
extern qboolean dirtDebug;
|
|
extern int dirtMode;
|
|
extern float dirtDepth;
|
|
extern float dirtScale;
|
|
extern float dirtGain;
|
|
extern float dirtAngle;
|
|
|
|
extern qboolean globalDirt; // apply dirt to all lights (unless they override it)?
|
|
extern qboolean minlightDirt; // apply dirt to minlight?
|
|
|
|
extern qboolean dirtModeSetOnCmdline;
|
|
extern qboolean dirtDepthSetOnCmdline;
|
|
extern qboolean dirtScaleSetOnCmdline;
|
|
extern qboolean dirtGainSetOnCmdline;
|
|
extern qboolean dirtAngleSetOnCmdline;
|
|
|
|
/* bounce */
|
|
|
|
extern qboolean bounce;
|
|
extern qboolean bouncedebug;
|
|
extern vec_t bouncescale;
|
|
extern vec_t bouncecolorscale;
|
|
|
|
/*
|
|
* Return space for the lightmap and colourmap at the same time so it can
|
|
* be done in a thread-safe manner.
|
|
*/
|
|
void GetFileSpace(byte **lightdata, byte **colordata, byte **deluxdata, int size);
|
|
|
|
extern byte *filebase;
|
|
extern byte *lit_filebase;
|
|
extern byte *lux_filebase;
|
|
|
|
extern int oversample;
|
|
extern int write_litfile;
|
|
extern int write_luxfile;
|
|
extern qboolean onlyents;
|
|
extern qboolean parse_escape_sequences;
|
|
extern qboolean scaledonly;
|
|
extern uint32_t *extended_texinfo_flags;
|
|
extern qboolean novis;
|
|
|
|
void SetupDirt();
|
|
|
|
/* Used by fence texture sampling */
|
|
void WorldToTexCoord(const vec3_t world, const texinfo_t *tex, vec_t coord[2]);
|
|
|
|
vec_t
|
|
TriangleArea(const vec3_t v0, const vec3_t v1, const vec3_t v2);
|
|
|
|
extern qboolean testFenceTextures;
|
|
extern qboolean surflight_dump;
|
|
extern qboolean phongDebug;
|
|
|
|
extern char mapfilename[1024];
|
|
|
|
void
|
|
PrintFaceInfo(const bsp2_dface_t *face, const bsp2_t *bsp);
|
|
|
|
const char *
|
|
Face_TextureName(const bsp2_t *bsp, const bsp2_dface_t *face);
|
|
|
|
void
|
|
Face_MakeInwardFacingEdgePlanes(const bsp2_t *bsp, const bsp2_dface_t *face, plane_t *out);
|
|
|
|
plane_t Face_Plane(const bsp2_t *bsp, const bsp2_dface_t *f);
|
|
void Face_Normal(const bsp2_t *bsp, const bsp2_dface_t *f, vec3_t norm);
|
|
|
|
/* vis testing */
|
|
const bsp2_dleaf_t *Light_PointInLeaf( const bsp2_t *bsp, const vec3_t point );
|
|
int Light_PointContents( const bsp2_t *bsp, const vec3_t point );
|
|
bool Mod_LeafPvs(const bsp2_t *bsp, const bsp2_dleaf_t *leaf, byte *out);
|
|
int DecompressedVisSize(const bsp2_t *bsp);
|
|
bool Pvs_LeafVisible(const bsp2_t *bsp, const byte *pvs, const bsp2_dleaf_t *leaf);
|
|
|
|
/* PVS index (light.cc) */
|
|
bool Leaf_HasSky(const bsp2_t *bsp, const bsp2_dleaf_t *leaf);
|
|
const bsp2_dleaf_t **Face_CopyLeafList(const bsp2_t *bsp, const bsp2_dface_t *face);
|
|
qboolean VisCullEntity(const bsp2_t *bsp, const byte *pvs, const bsp2_dleaf_t *entleaf);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __LIGHT_LIGHT_H__ */
|