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Implementation of reflection and skylight probes.

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Moves lighting math to the diffuse/specular two-channel logic.
This commit is contained in:
Areloch 2018-09-16 22:15:07 -05:00
parent 1f7cf55204
commit b19a4b22c8
102 changed files with 12346 additions and 1911 deletions
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30
Engine/source/T3D/lighting/IBLUtilities.h Normal file
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#pragma once
namespace IBLUtilities
{
void GenerateIrradianceMap(GFXTextureTargetRef renderTarget, GFXCubemapHandle cubemap, GFXCubemapHandle &cubemapOut);
void GeneratePrefilterMap(GFXTextureTargetRef renderTarget, GFXCubemapHandle cubemap, U32 mipLevels, GFXCubemapHandle &cubemapOut);
void GenerateBRDFTexture(GFXTexHandle &textureOut);
void bakeReflection(String outputPath, S32 resolution);
LinearColorF decodeSH(Point3F normal, const LinearColorF SHTerms[9], const F32 SHConstants[5]);
MatrixF getSideMatrix(U32 side);
F32 harmonics(U32 termId, Point3F normal);
LinearColorF sampleSide(GBitmap* cubeFaceBitmaps[6], const U32& cubemapResolution, const U32& termindex, const U32& sideIndex);
//
//SH Calculations
// From http://sunandblackcat.com/tipFullView.php?l=eng&topicid=32&topic=Spherical-Harmonics-From-Cube-Texture
// With shader decode logic from https://github.com/nicknikolov/cubemap-sh
void calculateSHTerms(GFXCubemapHandle cubemap, LinearColorF SHTerms[9], F32 SHConstants[5]);
F32 texelSolidAngle(F32 aU, F32 aV, U32 width, U32 height);
F32 areaElement(F32 x, F32 y);
};