Engine/Shaders/DOFAndBloomGatherVertexShader.usf

/*=============================================================================
	DOFAndBloomGatherPixelShader.usf: Vertex shader for gathering the combined depth of field and bloom samples for blurring.
	Copyright 1998-2008 Epic Games, Inc. All Rights Reserved.
=============================================================================*/

/** The offsets used to sample the scene texture. */
float4 SampleOffsets[(NUM_SAMPLES + 1) / 2];

#if !XBOX
/** The entry point. */
void Main(
	in float4 InPosition : POSITION,
	in float2 InUV : TEXCOORD0,
	out float4 OutOffsetUVs[(NUM_SAMPLES + 1) / 2] : TEXCOORD0,
	out float4 OutPosition : POSITION
	)
{
	OutPosition = InPosition;
	for(int OffsetIndex = 0;OffsetIndex < (NUM_SAMPLES + 1) / 2;OffsetIndex++)
	{
		OutOffsetUVs[OffsetIndex] = InUV.xyyx + SampleOffsets[OffsetIndex];
	}
}
#else
/** The entry point. */
void Main(
	in float4 InPosition : POSITION,
	in float2 InUV : TEXCOORD0,
	out float2 OutUV : TEXCOORD0,
	out float4 OutPosition : POSITION
	)
{
	OutPosition = InPosition;
	OutUV = InUV.xy + SampleOffsets[0].xy;
}
#endif