30 lines
884 B
HLSL
30 lines
884 B
HLSL
// Copyright Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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LumenFloatQuantization.ush: Utility that quantizes floats for writing to render targets
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=============================================================================*/
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#pragma once
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#include "../Quantization.ush"
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// 2^(-NumMantissaBits)
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float3 TargetFormatQuantizationError;
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float3 QuantizeForFloatRenderTarget(float3 Color, float E, const float3 QuantizationError)
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{
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return QuantizeFloatColor(Color, QuantizationError, E);
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}
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float3 QuantizeForFloatRenderTarget(float3 Color, float E)
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{
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return QuantizeForFloatRenderTarget(Color, E, TargetFormatQuantizationError);
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}
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float3 QuantizeForFloatRenderTarget(float3 Color, int3 P)
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{
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uint Random = Rand3DPCG16(P).x;
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float E = Rand16ToFloat(Random);
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return QuantizeForFloatRenderTarget(Color, E);
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}
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