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48 行
2.1 KiB
48 行
2.1 KiB
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// These functions are use to hide the handling of triplanar mapping
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// Normal need a specific treatment as they use special encoding for both base and detail map
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// Also we use multiple inclusion to handle the various variation for lod and bias
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// param can be unused, lod or bias
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float4 ADD_FUNC_SUFFIX(SampleUVMapping)(TEXTURE2D_ARGS(textureName, samplerName), UVMapping uvMapping, float param)
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{
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{
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return SAMPLE_TEXTURE_FUNC(textureName, samplerName, uvMapping.uv, param);
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}
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}
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// Nested multiple includes of the file to handle all variations of normal map (AG, RG or RGB)
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// This version is use for the base normal map (BC5 or DXT5nm)
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#define ADD_NORMAL_FUNC_SUFFIX(Name) Name
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#if defined(UNITY_NO_DXT5nm)
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#define UNPACK_NORMAL_FUNC UnpackNormalRGB
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#else
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#define UNPACK_NORMAL_FUNC UnpackNormalmapRGorAG
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#endif
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float3 ADD_FUNC_SUFFIX(ADD_NORMAL_FUNC_SUFFIX(SampleUVMappingNormal))(TEXTURE2D_ARGS(textureName, samplerName), UVMapping uvMapping, float scale, float param)
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{
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return UNPACK_NORMAL_FUNC(SAMPLE_TEXTURE_FUNC(textureName, samplerName, uvMapping.uv, param), scale);
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}
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#undef ADD_NORMAL_FUNC_SUFFIX
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#undef UNPACK_NORMAL_FUNC
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// This version is for normalmap with AG encoding only. Use with details map encoded with others properties (like smoothness).
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#define ADD_NORMAL_FUNC_SUFFIX(Name) Name##AG
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#define UNPACK_NORMAL_FUNC UnpackNormalAG
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float3 ADD_FUNC_SUFFIX(ADD_NORMAL_FUNC_SUFFIX(SampleUVMappingNormal))(TEXTURE2D_ARGS(textureName, samplerName), UVMapping uvMapping, float scale, float param)
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{
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return UNPACK_NORMAL_FUNC(SAMPLE_TEXTURE_FUNC(textureName, samplerName, uvMapping.uv, param), scale);
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}
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#undef ADD_NORMAL_FUNC_SUFFIX
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#undef UNPACK_NORMAL_FUNC
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// This version is for normalmap with RGB encoding only, i.e uncompress or BC7.
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#define ADD_NORMAL_FUNC_SUFFIX(Name) Name##RGB
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#define UNPACK_NORMAL_FUNC UnpackNormalRGB
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float3 ADD_FUNC_SUFFIX(ADD_NORMAL_FUNC_SUFFIX(SampleUVMappingNormal))(TEXTURE2D_ARGS(textureName, samplerName), UVMapping uvMapping, float scale, float param)
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{
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return UNPACK_NORMAL_FUNC(SAMPLE_TEXTURE_FUNC(textureName, samplerName, uvMapping.uv, param), scale);
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}
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#undef ADD_NORMAL_FUNC_SUFFIX
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#undef UNPACK_NORMAL_FUNC
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