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33 lines
1.1 KiB
Plaintext
33 lines
1.1 KiB
Plaintext
// Copyright 1998-2017 Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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SimpleElementNormalMapPixelShader.hlsl: Pixel shader for previewing normal
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map textures rendered as simple elements.
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=============================================================================*/
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#include "Common.usf"
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#define WRITE_TO_GBUFFER (FEATURE_LEVEL >= FEATURE_LEVEL_SM4 && !FORWARD_SHADING)
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Texture2D NormalMapTexture;
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SamplerState NormalMapTextureSampler;
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void Main(
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in float2 TextureCoordinate : TEXCOORD0,
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out float4 OutColor : SV_Target0
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#if WRITE_TO_GBUFFER
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,out float4 OutWorldNormal : SV_Target1
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#endif
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)
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{
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const float4 NormalSample = Texture2DSample(NormalMapTexture, NormalMapTextureSampler, TextureCoordinate);
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const float4 Normal = UnpackNormalMap(NormalSample);
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const float4 RescaledNormal = float4(Normal.xyz * 0.5 + 0.5, 1);
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OutColor = RETURN_COLOR(RescaledNormal);
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#if WRITE_TO_GBUFFER
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// Set the G buffer bits that indicate that deferred lighting and image reflections are not enabled
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OutWorldNormal = 0;
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#endif
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}
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