28 lines
932 B
HLSL
28 lines
932 B
HLSL
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#ifndef SUBSURFACE
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#define SUBSURFACE
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float _SSSThicknessMod;
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float _SSSSCale;
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float _SSSPower;
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float _SSSDistortion;
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float4 _SSSColor;
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float _EnableSSS;
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POI_TEXTURE_NOSAMPLER(_SSSThicknessMap);
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float3 calculateSubsurfaceScattering()
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{
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float SSS = 1 - POI2D_SAMPLER_PAN(_SSSThicknessMap, _MainTex, poiMesh.uv[_SSSThicknessMapUV], _SSSThicknessMapPan);
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half3 vLTLight = poiLight.direction + poiMesh.normals[0] * _SSSDistortion;
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half flTDot = pow(saturate(dot(poiCam.viewDir, -vLTLight)), _SSSPower) * _SSSSCale;
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#ifdef FORWARD_BASE_PASS
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half3 fLT = (flTDot) * saturate(SSS + - 1 * _SSSThicknessMod);
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#else
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half3 fLT = poiLight.attenuation * (flTDot) * saturate(SSS + - 1 * _SSSThicknessMod);
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#endif
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return fLT * poiLight.color * _SSSColor;
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}
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#endif
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