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materialsystem/stdshaders/accumbuff5sample_ps2x.fxc

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+//========== Copyright (c) Valve Corporation, All rights reserved. ==========//
+
+#include "common_ps_fxc.h"
+
+sampler TexSampler0	: register( s0 );
+sampler TexSampler1	: register( s1 );
+sampler TexSampler2	: register( s2 );
+sampler TexSampler3	: register( s3 );
+sampler TexSampler4	: register( s4 );
+
+struct PS_INPUT
+{
+	float2 texCoord	: TEXCOORD0;
+};
+
+const float4 weights : register( c0 );
+
+float4 main( PS_INPUT i ) : COLOR
+{
+	// Just sample the four input textures
+	float4 sample0 = tex2D( TexSampler0, i.texCoord );
+	float4 sample1 = tex2D( TexSampler1, i.texCoord );
+	float4 sample2 = tex2D( TexSampler2, i.texCoord );
+	float4 sample3 = tex2D( TexSampler3, i.texCoord );
+	float4 sample4 = tex2D( TexSampler4, i.texCoord );
+
+	// Compute weighted average and return
+	return FinalOutput( weights.x * sample0 +
+						   weights.x * sample1 +
+						   weights.x * sample2 +
+						   weights.x * sample3 +
+						   weights.y * sample4, 0, PIXEL_FOG_TYPE_NONE, TONEMAP_SCALE_NONE );
+}