/*=============================================================================
	DepthOnlyPixelShader.hlsl: Depth-only pixel shader.
	Copyright 1998-2010 Epic Games, Inc. All Rights Reserved.
=============================================================================*/

#include "Common.usf"
#include "Material.usf"
#include "VertexFactory.usf"

// ME3START - Rob Krajcarski - March 22, 2011 - Allow surface rendering to have custom depth pass
#if MATERIAL_TRANSLUCENT_SURFACE_PREPASS
void GetMaterialClippingTranslucentSurfaceDepthOnly(FMaterialPixelParameters Parameters)
{
	clip( GetMaterialMask(Parameters) );
}
#endif // MATERIAL_TRANSLUCENT_SURFACE_PREPASS
// ME3END

void Main(
#if !MATERIALBLENDING_SOLID
	FVertexFactoryInterpolants FactoryInterpolants,
	// BIOSTART - September 15, 2010 - Wihlidal, Graham - PS3 Fragment and Vertex Shader Optimizations
	half4 CameraVectorOrVertexColor : TEXCOORD4,
	// BIOEND
	float4 PixelPosition : TEXCOORD5,
	OPTIONAL_FacingSign
	OPTIONAL_PixelShaderScreenPosition
#elif MATERIAL_USE_SCREEN_DOOR_FADE
	OPTIONAL_PixelShaderScreenPosition
#endif
	// BIOSTART - September 15, 2010 - Wihlidal, Graham - PS3 Fragment and Vertex Shader Optimizations
	out half4 OutColor : SV_Target0
	// BIOEND
	)
{
#if !MATERIALBLENDING_SOLID

	FMaterialPixelParameters MaterialParameters = GetMaterialPixelParameters(FactoryInterpolants);
	CalcMaterialParameters(MaterialParameters, FacingSign, CameraVectorOrVertexColor, PixelPosition);

	// ME3START - Rob Krajcarski - March 22, 2011 - Allow surface rendering to have custom depth pass
	#if MATERIAL_TRANSLUCENT_SURFACE_PREPASS
		GetMaterialClippingTranslucentSurfaceDepthOnly(MaterialParameters);
	#endif
	// ME3END
	
	#if MATERIAL_LIT_TRANSLUCENCY_PREPASS
		GetMaterialClippingLitTranslucencyDepthOnly(MaterialParameters);
	#else
		GetMaterialClipping(MaterialParameters, PixelShaderScreenPosition.xy);
	#endif

#elif MATERIAL_USE_SCREEN_DOOR_FADE
	// Apply screen door fade clip mask
	ApplyScreenDoorFadeMask( PixelShaderScreenPosition.xy );
#endif

	OutColor = 0;
}