59 lines
1.5 KiB
Plaintext
59 lines
1.5 KiB
Plaintext
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Shader "Hidden/PostProcessing/Debug/Waveform"
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{
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HLSLINCLUDE
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#pragma exclude_renderers gles gles3 d3d11_9x
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#pragma target 4.5
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#include "Packages/com.unity.postprocessing/PostProcessing/Shaders/StdLib.hlsl"
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StructuredBuffer<uint4> _WaveformBuffer;
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float3 _Params; // x: buffer width, y: buffer height, z: exposure, w: unused
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float3 Tonemap(float3 x, float exposure)
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{
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const float a = 6.2;
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const float b = 0.5;
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const float c = 1.7;
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const float d = 0.06;
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x *= exposure;
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x = max((0.0).xxx, x - (0.004).xxx);
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x = (x * (a * x + b)) / (x * (a * x + c) + d);
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return x * x;
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}
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float4 Frag(VaryingsDefault i) : SV_Target
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{
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const float3 red = float3(1.4, 0.03, 0.02);
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const float3 green = float3(0.02, 1.1, 0.05);
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const float3 blue = float3(0.0, 0.25, 1.5);
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float3 color = float3(0.0, 0.0, 0.0);
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uint2 uvI = i.vertex.xy;
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float3 w = _WaveformBuffer[uvI.x * _Params.y + uvI.y].xyz;
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color += red * w.r;
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color += green * w.g;
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color += blue * w.b;
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color = Tonemap(color, _Params.z);
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return float4(saturate(color), 1.0);
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}
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ENDHLSL
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SubShader
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{
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Cull Off ZWrite Off ZTest Always
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Pass
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{
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HLSLPROGRAM
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#pragma vertex VertDefault
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#pragma fragment Frag
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ENDHLSL
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}
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}
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}
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