mirror of
https://github.com/muskit/H3VR-TNH-Quality-of-Life-Improvements.git
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45 lines
1.1 KiB
HLSL
45 lines
1.1 KiB
HLSL
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// Alloy Physical Shader Framework
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// Copyright 2013-2017 RUST LLC.
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// http://www.alloy.rustltd.com/
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/////////////////////////////////////////////////////////////////////////////////
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/// @file AO2.cginc
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/// @brief Secondary Ambient Occlusion, possibly on a different UV.
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/////////////////////////////////////////////////////////////////////////////////
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#ifndef ALLOY_SHADERS_FEATURE_AO2_CGINC
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#define ALLOY_SHADERS_FEATURE_AO2_CGINC
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#if !defined(A_AO2_ON) && defined(_AO2_ON)
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#define A_AO2_ON
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#endif
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#ifdef A_AO2_ON
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#ifndef A_AMBIENT_OCCLUSION_ON
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#define A_AMBIENT_OCCLUSION_ON
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#endif
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#endif
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#include "Assets/Alloy/Shaders/Framework/Feature.cginc"
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#ifdef A_AO2_ON
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/// Secondary Ambient Occlusion map.
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/// Expects an RGB map with sRGB sampling
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A_SAMPLER_2D(_Ao2Map);
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/// Ambient Occlusion strength.
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/// Expects values in the range [0,1].
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half _Ao2Occlusion;
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#endif
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void aAo2(
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inout ASurface s)
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{
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#ifdef A_AO2_ON
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float2 ao2Uv = A_TEX_TRANSFORM_UV(s, _Ao2Map);
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s.ambientOcclusion *= aLerpOneTo(tex2D(_Ao2Map, ao2Uv).g, _Ao2Occlusion * s.mask);
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#endif
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}
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#endif // ALLOY_SHADERS_FEATURE_AO2_CGINC
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