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materialsystem/stdshaders/vr_distort_texture_ps2x.fxc

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+// DYNAMIC: "CMBO_USERENDERTARGET" "0..1"
+
+#include "shader_constant_register_map.h"
+#include "common_ps_fxc.h"
+
+sampler BaseTextureSampler		: register( s0 );
+sampler DistortMapTextureSampler		: register( s1 );
+
+
+struct PS_INPUT
+{
+	float2 vBaseTexCoord		: TEXCOORD0;
+};
+
+
+float4 main( PS_INPUT i ) : COLOR
+{
+	float2 vOriginal = i.vBaseTexCoord.xy;
+
+	float4 vRead = tex2D( DistortMapTextureSampler, vOriginal );
+
+	float2 vGreen;
+	vGreen.r = ( vRead.x + vRead.z ) / 2.0;
+	vGreen.g = ( vRead.y + vRead.w ) / 2.0;
+
+	float4 vFinal;
+	vFinal.r = tex2D( BaseTextureSampler, vRead.xy ).r;
+	vFinal.ga = tex2D( BaseTextureSampler, vGreen ).ga;
+	vFinal.b = tex2D( BaseTextureSampler, vRead.zw ).b;
+	
+	float fBoundsCheck;
+	#if ( CMBO_USERENDERTARGET )
+	{
+		fBoundsCheck = saturate( dot( (vGreen.xy < float2(0.01,0.01)), float2(1,1)) + dot( (vGreen.xy > float2(0.99,0.99)), float2(1,1)) );
+	}
+	#else
+	{
+		fBoundsCheck = saturate( dot( (vGreen.xy < float2(0.005,0.005)), float2(1,1)) + dot( (vGreen.xy > float2(0.995,0.995)), float2(1,1))
+			+ (vGreen.x > 0.495 && vGreen.x < 0.505 ) );
+	}
+	#endif
+
+	vFinal.xyz = lerp( vFinal.xyz, float3(0,0,0), fBoundsCheck );
+
+	return vFinal;
+}
+
+
+