// ƒsƒNƒZƒ‹ƒVƒF[ƒ_[‚Μ“ό—Ν
struct PS_INPUT
{
	float4 ViewPosition   : TEXCOORD0;
};

// ƒsƒNƒZƒ‹ƒVƒF[ƒ_[‚̏o—Ν
struct PS_OUTPUT
{
	float4 Color0         : COLOR0 ;
};


// C++ ‘€‚Őݒ肷‚ι’萔‚Μ’θ‹`
float3 cfDOF_Area  : register( c0 ) ;	// ”νŽΚŠE[“x‚Μ”ΝˆΝξ•ρ   x:”νŽΚŠE[“xŠJŽnˆΚ’u   y:”νŽΚŠE[“xI—ΉˆΚ’u   z:”νŽΚŠE[“x‚Μ”ΝˆΝ‚Μ‹t”


// mainŠΦ”
PS_OUTPUT main( PS_INPUT PSInput )
{
	PS_OUTPUT PSOutput ;
	float z_param ;

	// ”νŽΚŠE[“x‚Μ”ΝˆΝ“ΰ‚π 0.0f ` 1.0f ‚Ι•ΟŠ·
	if( PSInput.ViewPosition.z < cfDOF_Area.x )
	{
		PSOutput.Color0.r = 0.0f ;
	}
	else
	if( PSInput.ViewPosition.z > cfDOF_Area.y )
	{
		PSOutput.Color0.r = 1.0f ;
	}
	else
	{
		PSOutput.Color0.r = ( PSInput.ViewPosition.z - cfDOF_Area.x ) * cfDOF_Area.z ;
	}

	PSOutput.Color0.g = 0.0f ;
	PSOutput.Color0.b = 0.0f ;
	PSOutput.Color0.a = 0.0f ;
   
	return PSOutput ;    
}