#include "common_ps_fxc.h"


sampler BaseTextureSampler	: register( s0 );

struct PS_INPUT
{
	HALF2 vBaseTexCoord0 : TEXCOORD0;
	HALF2 vBaseTexCoord1 : TEXCOORD1;
	HALF2 vBaseTexCoord2 : TEXCOORD2;
	HALF2 vBaseTexCoord3 : TEXCOORD3;
	HALF2 vBaseTexCoord4 : TEXCOORD4;
};


HALF4 main( PS_INPUT i ) : COLOR
{
	/* Sample original pixel color */
	HALF4 mainColor = tex2D( BaseTextureSampler, i.vBaseTexCoord1 );

	/* Calculate the intensity of the pixel */
	float Intensity = dot(mainColor, float4(0.299, 0.587, 0.184, 0));

	/* Return greyscale value */
	return float4(Intensity.xxx, mainColor.a);

}