// deinterlace (blend)=ps_2_0
// Code from MPC

sampler s0 : register(s0);
float4 p0 : register(c0);

#define width (p0[0])
#define height (p0[1])
#define counter (p0[2])
#define clock (p0[3])

#define PI acos(-1)

float4 main(float2 tex : TEXCOORD0) : COLOR
{
	float4 c0 = tex2D(s0, tex);

	float2 h = float2(0, 1/height);
	float4 c1 = tex2D(s0, tex-h);
	float4 c2 = tex2D(s0, tex+h);
	c0 = (c0*2+c1+c2)/4;

	return c0;
}