35 lines
816 B
GLSL
35 lines
816 B
GLSL
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// Copyright 2020 Google LLC
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Texture2D textureColor : register(t1);
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SamplerState samplerColor : register(s1);
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struct UBO
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{
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float radialBlurScale;
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float radialBlurStrength;
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float2 radialOrigin;
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};
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cbuffer ubo : register(b0) { UBO ubo; }
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float4 main([[vk::location(0)]] float2 inUV : TEXCOORD0) : SV_TARGET
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{
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int2 texDim;
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textureColor.GetDimensions(texDim.x, texDim.y);
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float2 radialSize = float2(1.0 / texDim.x, 1.0 / texDim.y);
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float2 UV = inUV;
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float4 color = float4(0.0, 0.0, 0.0, 0.0);
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UV += radialSize * 0.5 - ubo.radialOrigin;
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#define samples 32
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for (int i = 0; i < samples; i++)
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{
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float scale = 1.0 - ubo.radialBlurScale * (float(i) / float(samples-1));
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color += textureColor.Sample(samplerColor, UV * scale + ubo.radialOrigin);
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}
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return (color / samples) * ubo.radialBlurStrength;
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}
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