70 lines
2.4 KiB
HLSL
70 lines
2.4 KiB
HLSL
#ifndef BEAUTIFY_DISTORTION
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#define BEAUTIFY_DISTORTION
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#if BEAUTIFY_CABERRATION
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float3 _ChromaticAberrationData;
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#define CHROMATIC_ABERRATION_INTENSITY _ChromaticAberrationData.x
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#define CHROMATIC_ABERRATION_SMOOTHING _ChromaticAberrationData.y
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#define CHROMATIC_ABERRATION_SHIFT _ChromaticAberrationData.z
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#define CHROMATIC_ABERRATION_MAX_SAMPLES 32
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#if BEAUTIFY_TURBO
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float4 GetDistortedColor(float2 uv) {
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float2 coords = 2.0 * uv - 1.0;
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float dst = dot(coords, coords);
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float2 delta = coords * (dst * CHROMATIC_ABERRATION_INTENSITY);
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float r = SAMPLE_TEXTURE2D_X(_MainTex, sampler_LinearClamp, uv).r;
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float g = SAMPLE_TEXTURE2D_X(_MainTex, sampler_LinearClamp, uv - delta).g;
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float b = SAMPLE_TEXTURE2D_X(_MainTex, sampler_LinearClamp, uv - delta * 2.0).b;
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return float4(r, g, b, 1.0);
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}
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#else
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float4 GetDistortedColor(float2 uv) {
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float2 coords = 2.0 * uv - 1.0;
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float dst = dot(coords, coords);
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float2 delta = coords * (dst * CHROMATIC_ABERRATION_INTENSITY);
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float4 abColor = float4(0,0,0,1.0);
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#if BEAUTIFY_CABERRATION_ALT
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int samples = clamp( (int)(dst * CHROMATIC_ABERRATION_SMOOTHING) + 1, 1, CHROMATIC_ABERRATION_MAX_SAMPLES);
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UNITY_UNROLL
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for (int k=0;k<CHROMATIC_ABERRATION_MAX_SAMPLES;k++) {
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if (k<samples) {
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float h = (float)(k + 1.0) / samples;
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float r = SAMPLE_TEXTURE2D_X_LOD(_MainTex, sampler_LinearClamp, uv, 0).r;
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float g = SAMPLE_TEXTURE2D_X_LOD(_MainTex, sampler_LinearClamp, uv - delta * h, 0).g;
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float b = SAMPLE_TEXTURE2D_X_LOD(_MainTex, sampler_LinearClamp, uv - delta * 2.0 * h, 0).b;
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abColor.rgb += float3(r, g, b);
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}
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}
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abColor.xyz /= samples;
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#else
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int samples = clamp( (int)(dst * CHROMATIC_ABERRATION_SMOOTHING) + 1, 3, CHROMATIC_ABERRATION_MAX_SAMPLES);
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float3 weight = 0.0001.xxx;
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UNITY_UNROLL
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for (int k=0;k<CHROMATIC_ABERRATION_MAX_SAMPLES;k++) {
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if (k<samples) {
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float h = (k+0.5) / samples;
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float3 spec = saturate( abs( fmod( (h + CHROMATIC_ABERRATION_SHIFT) * 6.0.xxx + float3(0, 4, 2), 6.0) - 3.0) - 1.0 ); // hue to rgb
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float3 rgb = SAMPLE_TEXTURE2D_X_LOD(_MainTex, sampler_LinearClamp, uv - delta * h, 0).xyz;
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abColor.xyz += rgb * spec;
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weight += spec;
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}
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}
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abColor.xyz /= weight;
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#endif
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return abColor;
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}
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#endif // BEAUTIFY_TURBO
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#endif // BEAUTIFY_CABERRATION
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#endif // BEAUTIFY_DISTORTION |