patches.cpp File Reference

#include "lighting.h"
#include "bsp.h"
#include "../../shared/images.h"

Go to the source code of this file.

Macros
#define	PATCH_SUBDIVIDE   64

Functions
void	CalcTextureReflectivity (void)
	Calculates the texture color that is used for light emitting surfaces. More...
static winding_t *	WindingFromFace (const dBspSurface_t *f)
static bool	HasLight (const dBspSurface_t *f)
static void	EmissiveLight (patch_t *patch)
	Check for light emitted by texture. More...
static void	BuildPatch (int fn, winding_t *w)
	Build a patch for a surface that emits light. More...
static entity_t *	EntityForModel (int modnum)
void	BuildPatches (void)
	Create surface fragments for light-emitting surfaces so that light sources may be computed along them. More...
static void	FinishSubdividePatch (patch_t *patch, patch_t *newp)
static void	SubdividePatch (patch_t *patch)
	Chops the patch by a global grid. More...
void	SubdividePatches (void)
	Iterate all of the head face patches, subdividing them as necessary. More...
void	FreePatches (void)
	After light sources have been created, patches may be freed. More...

Variables
static vec3_t	texture_reflectivity [MAX_MAP_TEXINFO]
patch_t *	face_patches [MAX_MAP_FACES]

Macro Definition Documentation

#define PATCH_SUBDIVIDE   64

Definition at line 236 of file patches.cpp.

Referenced by SubdividePatch().

Function Documentation

static void BuildPatch ( int  fn, winding_t *  w  )

static

Build a patch for a surface that emits light.

Note

This is called in the lighting stage

Parameters

fn	The face number of the surface that emits the light
w	The winding

See also

BuildLights

Definition at line 145 of file patches.cpp.

References patch_s::area, curTile, EmissiveLight(), patch_s::face, dMapTile_t::faces, Mem_AllocType, patch_s::normal, dBspPlane_t::normal, patch_s::origin, dBspSurface_t::planenum, dMapTile_t::planes, dBspSurface_t::side, VectorCopy, VectorMA(), VectorNegate, patch_s::winding, WindingArea(), and WindingCenter().

Referenced by BuildPatches().

void BuildPatches

(

void

)

Create surface fragments for light-emitting surfaces so that light sources may be computed along them.

Definition at line 198 of file patches.cpp.

References BuildPatch(), curTile, EntityForModel(), f, face_offset, dMapTile_t::faces, dBspModel_t::firstface, GetVectorForKey(), HasLight(), i, dMapTile_t::models, dBspModel_t::numfaces, dMapTile_t::nummodels, winding_s::numpoints, OBJZERO, winding_s::p, VectorAdd, VectorCopy, and WindingFromFace().

Referenced by LightWorld().

void CalcTextureReflectivity

(

void

)

Calculates the texture color that is used for light emitting surfaces.

Definition at line 41 of file patches.cpp.

References Com_sprintf(), curTile, i, Img_LoadImage(), MAX_QPATH, dMapTile_t::numtexinfo, Q_streq, dMapTile_t::texinfo, texinfo_s::texture, texture_reflectivity, VectorCopy, VectorSet, VERB_EXTRA, VERB_NORMAL, and Verb_Printf().

Referenced by main().

static void EmissiveLight ( patch_t *  patch )

inlinestatic

Check for light emitted by texture.

Note

Surface lights

See also

TexinfoForBrushTexture

Definition at line 130 of file patches.cpp.

References curTile, patch_s::face, patch_s::light, dBspSurface_t::texinfo, dMapTile_t::texinfo, texture_reflectivity, texinfo_s::value, and VectorScale.

Referenced by BuildPatch().

static entity_t* EntityForModel ( int  modnum )

static

Definition at line 178 of file patches.cpp.

References Com_sprintf(), entities, i, name, num_entities, Q_streq, and ValueForKey().

Referenced by BuildPatches().

static void FinishSubdividePatch ( patch_t *  patch, patch_t *  newp  )

static

Definition at line 238 of file patches.cpp.

References patch_s::area, patch_s::light, patch_s::normal, patch_s::origin, VectorCopy, VectorMA(), patch_s::winding, WindingArea(), and WindingCenter().

Referenced by SubdividePatch().

void FreePatches

(

void

)

After light sources have been created, patches may be freed.

Definition at line 325 of file patches.cpp.

References i, MAX_MAP_FACES, Mem_Free, and patch_s::next.

Referenced by LightWorld().

static bool HasLight ( const dBspSurface_t *  f )

inlinestatic

Definition at line 117 of file patches.cpp.

References curTile, SURF_LIGHT, texinfo_s::surfaceFlags, dBspSurface_t::texinfo, dMapTile_t::texinfo, and texinfo_s::value.

Referenced by BuildPatches().

static void SubdividePatch ( patch_t *  patch )

static

Chops the patch by a global grid.

Definition at line 266 of file patches.cpp.

References ClipWindingEpsilon(), FinishSubdividePatch(), i, Mem_AllocType, patch_s::next, ON_EPSILON, PATCH_SUBDIVIDE, VectorClear, patch_s::winding, and WindingBounds().

Referenced by SubdividePatches().

void SubdividePatches

(

void

)

Iterate all of the head face patches, subdividing them as necessary.

Definition at line 312 of file patches.cpp.

References i, MAX_MAP_FACES, and SubdividePatch().

Referenced by LightWorld().

static winding_t* WindingFromFace ( const dBspSurface_t *  f )

static

Definition at line 95 of file patches.cpp.

References AllocWinding(), curTile, dMapTile_t::edges, dBspSurface_t::firstedge, i, dBspSurface_t::numedges, winding_s::numpoints, winding_s::p, dBspVertex_t::point, RemoveColinearPoints(), dMapTile_t::surfedges, v, dBspEdge_t::v, VectorCopy, and dMapTile_t::vertexes.

Referenced by BuildPatches().

Variable Documentation

patch_t* face_patches[MAX_MAP_FACES]

Definition at line 30 of file patches.cpp.

Referenced by BuildLights().

vec3_t texture_reflectivity[MAX_MAP_TEXINFO]

static

Definition at line 29 of file patches.cpp.

Referenced by CalcTextureReflectivity(), and EmissiveLight().