30 lines
1.4 KiB
HLSL
30 lines
1.4 KiB
HLSL
#ifndef BEAUTIFY_AA_FX
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#define BEAUTIFY_AA_FX
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float4 _AntialiasData;
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#define ANTIALIAS_STRENGTH _AntialiasData.x
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#define ANTIALIAS_THRESHOLD _AntialiasData.y
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#define ANTIALIAS_DEPTH_ATTEN _AntialiasData.z
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#define ANTIALIAS_CLAMP _AntialiasData.w
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float3 ApplyEdgeAA(float2 uv, float3 rgbM, float dDepth, float depthCenter, float lumaN, float lumaS, float lumaW, float lumaE, float minLuma, float maxLuma, float2 texelSize) {
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float2 gradient = float2(lumaN - lumaS, lumaW - lumaE);
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float2 absGradient = abs(gradient);
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float gradientAmp = max(absGradient.x, absGradient.y) + 1e-5;
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float2 dir = gradient / gradientAmp;
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float sampleRadius = min(gradientAmp * ANTIALIAS_STRENGTH, ANTIALIAS_CLAMP);
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float2 n = dir * sampleRadius;
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float antialiasDepthAtten = 1.0 - saturate(depthCenter * ANTIALIAS_DEPTH_ATTEN);
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n *= texelSize * antialiasDepthAtten;
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float3 rgbA = SAMPLE_TEXTURE2D_X(_MainTex, sampler_LinearClamp, uv - n * 0.166667).rgb + SAMPLE_TEXTURE2D_X(_MainTex, sampler_LinearClamp, uv + n * 0.166667).rgb;
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float3 rgbB = 0.25 * (rgbA + SAMPLE_TEXTURE2D_X(_MainTex, sampler_LinearClamp, uv - n * 0.5).rgb + SAMPLE_TEXTURE2D_X(_MainTex, sampler_LinearClamp, uv + n * 0.5).rgb);
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float lumaB = getLuma(rgbB);
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if (lumaB < minLuma || lumaB > maxLuma) rgbB = rgbA * 0.5;
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return rgbB;
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}
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#endif
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