38 lines
1.5 KiB
HLSL
38 lines
1.5 KiB
HLSL
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#ifndef POI_BLENDING
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#define POI_BLENDING
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/*
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0: Zero float4(0.0, 0.0, 0.0, 0.0),
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1: One float4(1.0, 1.0, 1.0, 1.0),
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2: DstColor destinationColor,
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3: SrcColor sourceColor,
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4: OneMinusDstColor float4(1.0, 1.0, 1.0, 1.0) - destinationColor,
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5: SrcAlpha sourceColor.aaaa,
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6: OneMinusSrcColor float4(1.0, 1.0, 1.0, 1.0) - sourceColor,
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7: DstAlpha destinationColor.aaaa,
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8: OneMinusDstAlpha float4(1.0, 1.0, 1.0, 1.0) - destinationColor.,
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9: SrcAlphaSaturate saturate(sourceColor.aaaa),
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10: OneMinusSrcAlpha float4(1.0, 1.0, 1.0, 1.0) - sourceColor.aaaa,
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*/
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float4 poiBlend(const uint sourceFactor, const float4 sourceColor, const uint destinationFactor, const float4 destinationColor)
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{
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const float4 blendData[11] = {
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float4(0.0, 0.0, 0.0, 0.0),
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float4(1.0, 1.0, 1.0, 1.0),
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destinationColor,
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sourceColor,
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float4(1.0, 1.0, 1.0, 1.0) - destinationColor,
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sourceColor.aaaa,
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float4(1.0, 1.0, 1.0, 1.0) - sourceColor,
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destinationColor.aaaa,
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float4(1.0, 1.0, 1.0, 1.0) - destinationColor.aaaa,
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saturate(sourceColor.aaaa),
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float4(1.0, 1.0, 1.0, 1.0) - sourceColor.aaaa,
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};
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return lerp(blendData[sourceFactor] * sourceColor + blendData[destinationFactor] * destinationColor,sourceColor, sourceColor.a);
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}
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#endif
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