initial

materialsystem/stdshaders/DebugDrawEnvmapMask_ps2x.fxc

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+//========== Copyright (c) Valve Corporation, All rights reserved. ==========//
+
+// DYNAMIC: "SHOWALPHA"			"0..1"
+
+#include "common_ps_fxc.h"
+
+sampler BaseTextureSampler	: register( s0 );
+
+struct PS_INPUT
+{
+    float4 projPos					: POSITION;	
+	float2 baseTexCoord				: TEXCOORD0;
+};
+
+float4_color_return_type main( PS_INPUT i ) : COLOR
+{
+	float4 baseColor = tex2D( BaseTextureSampler, i.baseTexCoord );
+#if SHOWALPHA
+	float4 result = float4( baseColor.a, baseColor.a, baseColor.a, 1.0f );
+#else
+	float4 result = float4( baseColor.rgb, 1.0f );
+#endif
+	return FinalOutput( result, 0, PIXEL_FOG_TYPE_NONE, TONEMAP_SCALE_NONE );
+}