texture TargetMap;

float fContrast=0.7;//between 0..1

sampler COLOR_SAMPLER = sampler_state { Texture   = <TargetMap>; MinFilter = Linear; MagFilter = Linear; MipFilter = None;};

float3 local_contrast(float3 color)
{
return color*color*(3-2*color);
}

void PS(
in float2 Tex : TEXCOORD0,

out float4 COL : COLOR0
) 
{
	COL.rgb=tex2D(COLOR_SAMPLER,Tex).rgb;

        float3 max_contrast_color=local_contrast(COL.rgb);
        //max_contrast_color=local_contrast(max_contrast_color);//add even more contrast if needed

        COL.rgb=lerp(COL.rgb,max_contrast_color,fContrast);//blend between original color and maximal contrast

        COL.a=1;
}

technique Shading
{
	pass one
	{
		PixelShader = compile ps_2_0 PS();
	}
}

camera.ambient = -15;