53 lines
2.0 KiB
Plaintext
53 lines
2.0 KiB
Plaintext
Shader "Hidden/Bansonic/GlobalDistortion"
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{
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SubShader
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{
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Tags { "RenderPipeline" = "UniversalPipeline" }
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ZWrite Off
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Cull Off
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ZTest Always
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Pass
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{
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Name "GlobalDistortion"
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HLSLPROGRAM
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#pragma vertex Vert
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#pragma fragment Frag
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#pragma target 4.5
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#include "Packages/com.unity.render-pipelines.universal/ShaderLibrary/Core.hlsl"
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#include "Packages/com.unity.render-pipelines.core/Runtime/Utilities/Blit.hlsl"
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float _DistortionIntensity;
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float _NoiseStrength;
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float _RadialStrength;
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float _NoiseScale;
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float2 _DistortionCenter;
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float _EdgeFade;
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half4 Frag(Varyings input) : SV_Target
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{
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float2 uv = input.texcoord;
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float2 centered = uv - _DistortionCenter;
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float distanceFromCenter = length(centered);
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float2 direction = distanceFromCenter > 0.0001 ? centered / distanceFromCenter : float2(0.0, 0.0);
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float normalizedDistance = saturate(distanceFromCenter * 1.41421356);
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float edgeMask = saturate(1.0 - pow(normalizedDistance, _EdgeFade));
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float t = _Time.y;
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float noiseA = sin((uv.x + t * 0.73) * _NoiseScale) * cos((uv.y - t * 1.13) * (_NoiseScale * 0.87));
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float noiseB = cos((uv.x * 1.31 - t * 0.41) * (_NoiseScale * 0.63)) * sin((uv.y * 1.11 + t * 0.52) * (_NoiseScale * 1.21));
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float2 radialOffset = direction * edgeMask * (_RadialStrength * 0.03) * _DistortionIntensity;
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float2 noiseOffset = float2(noiseA, noiseB) * (_NoiseStrength * 0.015) * _DistortionIntensity;
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float2 sampleUv = uv + radialOffset + noiseOffset;
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sampleUv = clamp(sampleUv, 0.0, 1.0);
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return SAMPLE_TEXTURE2D_X(_BlitTexture, sampler_LinearClamp, sampleUv);
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}
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ENDHLSL
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}
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}
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}
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