// Copyright Epic Games, Inc. All Rights Reserved.

#include "SMAACommon.ush"

struct FSMAANeighborhoodBlendingScreenVertexOutput
{
	noperspective float2 UV : TEXCOORD0;
	float4 Offset : TEXCOORD1;
	float4 Position : SV_POSITION;
};

Texture2D BlendTex;

/*-----------------------------------------------------------------------------
	vertex shader
-----------------------------------------------------------------------------*/
#ifdef MainVS

	void MainVS(
		float2 InPosition : ATTRIBUTE0,
		float2 InUV       : ATTRIBUTE1,
		out FSMAANeighborhoodBlendingScreenVertexOutput Output
	)
	{
		DrawRectangle( float4( InPosition, 0, 1 ), InUV, Output.Position, Output.UV);

		SMAANeighborhoodBlendingVS(Output.UV, Output.Offset);
	}

#endif // MainVS


/*-----------------------------------------------------------------------------
	pixel shader
-----------------------------------------------------------------------------*/
#ifdef MainPS

	void MainPS(
		FSMAANeighborhoodBlendingScreenVertexOutput Input,
		out float4 OutColor : SV_Target0)
	{
		OutColor = SMAANeighborhoodBlendingPS(Input.UV, Input.Offset, Input_Texture, BlendTex);

	#if DIM_ALPHA_CHANNEL == 0
		OutColor.a = 1.0;
	#endif

	}

#endif // MainPS