fix(VR): fix ConvertMonoUVToOtherEye

This requires hardcoding a shift based on a q3. This may not be the
scalable solution.

package/Shaders/Common/VR.hlsli

@@ -1,7 +1,7 @@
 #ifndef __VR_DEPENDENCY_HLSL__
 #define __VR_DEPENDENCY_HLSL__
 #ifdef VR
-#	if !defined(COMPUTESHADER) && !defined(CSHADER)
+#	if (!defined(COMPUTESHADER) && !defined(CSHADER)) || defined(FRAMEBUFFER)
 #		include "Common\Constants.hlsli"
 #		include "Common\FrameBuffer.hlsli"
 #	endif
@@ -146,7 +146,8 @@ namespace Stereo
 		return normalizedCoord;
 	}
 
-#ifdef PSHADER
+#if defined(PSHADER) || defined(FRAMEBUFFER)
+	// These functions require the framebuffer which is typically provided with the PSHADER
 	/**
 	Gets the eyeIndex for PSHADER
 	@returns eyeIndex (0 left, 1 right)
@@ -209,6 +210,12 @@ namespace Stereo
 		float4 viewPosCurrentEye = mul(CameraProjInverse[eyeIndex], clipPos);
 		viewPosCurrentEye /= viewPosCurrentEye.w;
 
+		// Adjust for eye position offset
+		const float2 eyeOffsetScale = float2(-0.50, 0.50);
+		float eyeOffset = dot(eyeOffsetScale, M_IdentityMatrix[eyeIndex].xy);
+		float adjustment = eyeOffset * viewPosCurrentEye.w * 8.8;  // based on q3 adjustments, may need better conversion
+		viewPosCurrentEye.x += adjustment;
+
 		// Convert View Space to World Space
 		float4 worldPos = mul(CameraViewInverse[eyeIndex], viewPosCurrentEye);