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51 行
3.5 KiB
51 行
3.5 KiB
// Gather all kind of mapping in one struct, allow to improve code readability
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struct LayerUV
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{
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float2 uv;
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bool isPlanar; // mutually exclusive with isTriplanar
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// triplanar
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bool isTriplanar;
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float2 uvYZ;
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float2 uvZX;
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float2 uvXY;
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};
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// Multiple includes of the file to handle all variations of textures sampling for regular, lod and bias
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// Regular sampling functions
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#define ADD_FUNC_SUFFIX(Name) Name
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#define SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV, unused) SAMPLE_TEXTURE2D(layerTex, layerSampler, layerUV)
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#include "SampleLayerInternal.hlsl"
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#undef ADD_FUNC_SUFFIX
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#undef SAMPLE_TEXTURE_FUNC
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// Lod sampling functions
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#define ADD_FUNC_SUFFIX(Name) Name##Lod
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#define SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV, lod) SAMPLE_TEXTURE2D_LOD(layerTex, layerSampler, layerUV, lod)
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#include "SampleLayerInternal.hlsl"
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#undef ADD_FUNC_SUFFIX
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#undef SAMPLE_TEXTURE_FUNC
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// Bias sampling functions
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#define ADD_FUNC_SUFFIX(Name) Name##Bias
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#define SAMPLE_TEXTURE_FUNC(layerTex, layerSampler, layerUV, bias) SAMPLE_TEXTURE2D_BIAS(layerTex, layerSampler, layerUV, bias)
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#include "SampleLayerInternal.hlsl"
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#undef ADD_FUNC_SUFFIX
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#undef SAMPLE_TEXTURE_FUNC
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// Macro to improve readibility of surface data
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#define SAMPLE_LAYER_TEXTURE2D(textureName, samplerName, coord) SampleLayer(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, 0.0) // Last 0.0 is unused
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#define SAMPLE_LAYER_TEXTURE2D_LOD(textureName, samplerName, coord, lod) SampleLayerLod(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, lod)
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#define SAMPLE_LAYER_TEXTURE2D_BIAS(textureName, samplerName, coord, bias) SampleLayerBias(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, bias)
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#define SAMPLE_LAYER_NORMALMAP(textureName, samplerName, coord, scale) SampleLayerNormal(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, 0.0)
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#define SAMPLE_LAYER_NORMALMAP_LOD(textureName, samplerName, coord, scale, lod) SampleLayerNormalLod(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, lod)
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#define SAMPLE_LAYER_NORMALMAP_BIAS(textureName, samplerName, coord, scale, bias) SampleLayerNormalBias(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, bias)
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#define SAMPLE_LAYER_NORMALMAP_AG(textureName, samplerName, coord, scale) SampleLayerNormalAG(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, 0.0)
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#define SAMPLE_LAYER_NORMALMAP_AG_LOD(textureName, samplerName, coord, scale, lod) SampleLayerNormalAGLod(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, lod)
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#define SAMPLE_LAYER_NORMALMAP_AG_BIAS(textureName, samplerName, coord, scale, bias) SampleLayerNormalAGBias(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, bias)
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#define SAMPLE_LAYER_NORMALMAP_RGB(textureName, samplerName, coord, scale) SampleLayerNormalRGB(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, 0.0)
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#define SAMPLE_LAYER_NORMALMAP_RGB_LOD(textureName, samplerName, coord, scale, lod) SampleLayerNormalRGBLod(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, lod)
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#define SAMPLE_LAYER_NORMALMAP_RGB_BIAS(textureName, samplerName, coord, scale, bias) SampleLayerNormalRGBBias(TEXTURE2D_PARAM(textureName, samplerName), coord, layerTexCoord.triplanarWeights, scale, bias)
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