#include <Common.Phlsl.txt>
struct PS_INPUT		{
	float2 TexCoord	: TEXCOORD0;
};
struct PS_OUTPUT		{
	fpart4 Color	: COLOR0;
};

sampler2D	MapColor;

const fpart4x3	LinearTransfo = fpart4x3(
	1,0,0,
	0,1,0,
	0,0,1,
	0,0,0
);
const fpart3	ContrastPower = fpart3(1,1,1);

#define DLinearTransfo
#define DContrast

fpart3	Contrast(fpart3 _Input)
{
	bool3	IsAboveHalf = _Input > 0.5 ;
	fpart3	ToRaise	= saturate(2*(IsAboveHalf ? 1-_Input : _Input));
	fpart3	Output	= 0.5*pow(ToRaise, ContrastPower);
	Output = IsAboveHalf ? 1-Output : Output;
	return Output;
}

ps_2_0 PS_OUTPUT psMain(const PS_INPUT v)
{
	PS_OUTPUT	Output = (PS_OUTPUT) 0;
	fpart4		Color = tex2D(MapColor, v.TexCoord);
	Output.Color.a	= Color.a;
#ifdef DLinearTransfo
	Color.a		= 1;
	Color.rgb	= mul(Color, LinearTransfo);
#endif
#ifdef DContrast
	Color.rgb	= Contrast(Color.rgb);
#endif
	Output.Color.rgb	= Color;
	return Output;
}