77 lines
2.7 KiB
C
77 lines
2.7 KiB
C
//========= Copyright © 1996-2005, Valve Corporation, All rights reserved. ============//
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//
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// Purpose:
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//
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// $Workfile: $
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// $Date: $
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//
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//-----------------------------------------------------------------------------
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// $Log: $
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//
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// $NoKeywords: $
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//=============================================================================//
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#ifndef RADIAL_H
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#define RADIAL_H
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#pragma once
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#include "mathlib/bumpvects.h"
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#include "mathlib/ssemath.h"
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#include "lightmap.h"
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#define RADIALDIST2 2 // (1.25*1.25+1.25*1.25)
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#define RADIALDIST 1.42 // 1.77 // sqrt( RADIALDIST2 )
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#define WEIGHT_EPS 0.00001f
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//-----------------------------------------------------------------------------
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// The radial_t data structure is used to accumulate irregularly spaced and irregularly
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// shaped direct and indirect lighting samples into a uniformly spaced and shaped luxel grid.
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//
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// The name "radial" is more historical than discriptive; it stems from the filtering method,
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// one of several methods initially tried. Since all the other methods have since been deleted,
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// it would probably be more accurate to rename it something like "LuxelAccumulationBucket" or
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// something similar, but since "radial" is fairly meaningless it's not like it's actually confusing
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// the issue.
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//-----------------------------------------------------------------------------
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typedef struct radial_s
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{
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int facenum;
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lightinfo_t l;
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int w, h;
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float weight[SINGLEMAP];
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LightingValue_t light[NUM_BUMP_VECTS + 1][SINGLEMAP];
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} radial_t;
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void WorldToLuxelSpace( lightinfo_t const *l, Vector const &world, Vector2D &coord );
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void LuxelSpaceToWorld( lightinfo_t const *l, float s, float t, Vector &world );
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void WorldToLuxelSpace( lightinfo_t const *l, FourVectors const &world, FourVectors &coord );
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void LuxelSpaceToWorld( lightinfo_t const *l, fltx4 s, fltx4 t, FourVectors &world );
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void AddDirectToRadial( radial_t *rad,
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Vector const &pnt,
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Vector2D const &coordmins, Vector2D const &coordmaxs,
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Vector const light[NUM_BUMP_VECTS+1],
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bool hasBumpmap, bool neighborHasBumpmap );
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void AddBounceToRadial( radial_t *rad,
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Vector const &pnt,
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Vector2D const &coordmins, Vector2D const &coordmaxs,
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Vector const light[NUM_BUMP_VECTS+1],
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bool hasBumpmap, bool neighborHasBumpmap );
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bool SampleRadial( radial_t *rad, Vector& pnt, Vector light[NUM_BUMP_VECTS+1], int bumpSampleCount );
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radial_t *AllocateRadial( int facenum );
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void FreeRadial( radial_t *rad );
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bool SampleRadial( radial_t *rad, Vector& pnt, Vector light[NUM_BUMP_VECTS + 1], int bumpSampleCount );
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radial_t *BuildPatchRadial( int facenum );
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// utilities
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bool FloatLess( float const& src1, float const& src2 );
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#endif
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