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diff --git a/materialsystem/stdshaders/windowimposter_ps2x.fxc b/materialsystem/stdshaders/windowimposter_ps2x.fxc
new file mode 100644
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--- /dev/null
+++ b/materialsystem/stdshaders/windowimposter_ps2x.fxc
@@ -0,0 +1,37 @@
+//====== Copyright � 1996-2004, Valve Corporation, All rights reserved. =======
+//
+// Purpose: 
+//
+//=============================================================================
+
+// DYNAMIC: "PIXELFOGTYPE"		"0..1"
+
+// STATIC: "CONVERT_TO_SRGB"	"0..1"	[ps20b][= g_pHardwareConfig->NeedsShaderSRGBConversion()] [PC]
+// STATIC: "CONVERT_TO_SRGB"	"0..0"	[= 0] [XBOX]
+
+#include "common_ps_fxc.h"
+#include "shader_constant_register_map.h"
+
+sampler EnvmapSampler		: register( s0 );
+
+const float4 g_FogParams				: register( PSREG_FOG_PARAMS );
+const float4 g_EyePos_SpecExponent		: register( PSREG_EYEPOS_SPEC_EXPONENT );
+
+struct PS_INPUT
+{
+	float3 eyeToVertVector			: TEXCOORD0;
+	float4 vertexColor				: COLOR;
+	
+	float4 worldPos_projPosZ		: TEXCOORD7;		// Necessary for pixel fog
+};
+
+float4 main( PS_INPUT i ) : COLOR
+{
+	HALF4 color;
+	color.xyz = ENV_MAP_SCALE * texCUBE( EnvmapSampler, i.eyeToVertVector );
+	color.a = 1.0f;
+	color *= i.vertexColor;
+	
+	float fogFactor = CalcPixelFogFactor( PIXELFOGTYPE, g_FogParams, g_EyePos_SpecExponent.z, i.worldPos_projPosZ.z, i.worldPos_projPosZ.w );
+	return FinalOutput( color, fogFactor, PIXELFOGTYPE, TONEMAP_SCALE_LINEAR );
+}