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30 lines
724 B
30 lines
724 B
//========== Copyright (c) Valve Corporation, All rights reserved. ==========//
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#include "common_ps_fxc.h"
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sampler TexSampler : register( s0 );
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struct PS_INPUT
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{
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float2 coordTap0 : TEXCOORD0;
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float2 coordTap1 : TEXCOORD1;
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float2 coordTap2 : TEXCOORD2;
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float2 coordTap3 : TEXCOORD3;
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};
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float4 main( PS_INPUT i ) : COLOR
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{
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float4 s0, s1, s2, s3;
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// Sample 4 taps
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s0 = tex2D( TexSampler, i.coordTap0 );
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s1 = tex2D( TexSampler, i.coordTap1 );
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s2 = tex2D( TexSampler, i.coordTap2 );
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s3 = tex2D( TexSampler, i.coordTap3 );
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// store grayscale version of buffer in alpha
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float4 vResult = ( s0 + s1 + s2 + s3 ) * 0.25f;
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vResult.a = dot( float3( 0.3f, 0.59f, 0.11f ), vResult.rgb );
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return vResult;
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}
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