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c9355c292c
optimized shaders to use SvPosition where possible, following change could remove some unused interpolator [CL 2697164 by Martin Mittring in Main branch]
40 lines
1.1 KiB
Plaintext
40 lines
1.1 KiB
Plaintext
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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/*=============================================================================
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PostProcessDilation.usf: PostProcessing dilation of the diffuse SVO content
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=============================================================================*/
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#include "Common.usf"
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#include "PostProcessCommon.usf"
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// pixel shader
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void MainPS(noperspective float4 UVAndScreenPos : TEXCOORD0, float4 SvPosition : SV_POSITION, out float4 OutColor : SV_Target0)
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{
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float2 UV = UVAndScreenPos.xy;
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// screen position in [-1, 1] screen space
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float2 ScreenSpacePos = UVAndScreenPos.zw;
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int3 PixelPos = int3((int2)(SvPosition.xy), 0);
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OutColor = PostprocessInput0.Load(PixelPos);
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int2 MaxSize = (int2)ViewportSize;
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#define SAMPLE(x, y)\
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{\
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int3 p = PixelPos + int3(x, y, 0);\
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FLATTEN\
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if(all(OutColor.rgb == 0) && all(p.xy < MaxSize))\
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{\
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OutColor = PostprocessInput0.Load(p);\
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}\
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}
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// take content from neighbors
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SAMPLE(-1,0) SAMPLE( 1,0) SAMPLE(0,-1) SAMPLE(0, 1)
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// not needed
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// SAMPLE(-1,1) SAMPLE( 1,1) SAMPLE(1,-1) SAMPLE(1, 1) SAMPLE(-1,-1) SAMPLE( 1,-1) SAMPLE(-1,-1) SAMPLE(-1, 1)
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}
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