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UnrealEngine/Engine/Plugins/TextureGraph/Shaders/Expressions/Expression_Grayscale.usf
2025-05-18 13:04:45 +08:00

14 lines
432 B
HLSL

// Copyright Epic Games, Inc. All Rights Reserved.
#include "/Engine/Public/Platform.ush"
#include "/Plugin/TextureGraph/SamplerStates.ush"
#include "/Plugin/TextureGraph/ShaderUtil.ush"
Texture2D SourceTexture;
float4 FSH_Grayscale(float2 uv : TEXCOORD0) : SV_Target0
{
float4 SourceClr = SourceTexture.Sample(SamplerStates_NoBorder, uv);
float Gray = Grayscale(SourceClr.rgb);
return float4(Gray, Gray, Gray, SourceClr.a);
}