// Sharpen_3x3=ps_2_0
// Code by Seb.26
// http://www.homecinema-fr.com/forum/viewtopic.php?t=29814317 

sampler s0 : register(s0);
float4 p0 : register(c0);
float4 p1 : register(c1);

#define width (p0[0])
#define height (p0[1])
#define counter (p0[2])
#define clock (p0[3])
#define one_over_width (p1[0])
#define one_over_height (p1[1])

#define PI acos(-1)

#define x 1.0

float4 main(float2 tex : TEXCOORD0) : COLOR
{

   float dx =(one_over_width*x);
   float dy =(one_over_height*x);

   float4 c9 = tex2D(s0, tex) * 2.0;

   float4 c1 =  tex2D( s0, tex + float2( -dx , -dy ) ) * 0.1;
   c1 +=  tex2D( s0, tex + float2( 0 , -dy ) ) * 0.15;
   c1 +=  tex2D( s0, tex + float2( dx , -dy ) ) * 0.1;

   c1 +=  tex2D( s0, tex + float2( -dx , 0 ) ) * 0.15;
   c1 +=  tex2D( s0, tex + float2( dx , 0 ) ) * 0.15;

   c1 +=  tex2D( s0, tex + float2( -dx , dy ) ) * 0.1;
   c1 +=  tex2D( s0, tex + float2( 0 , dy ) ) * 0.15;
   c1 +=  tex2D( s0, tex + float2( dx , dy ) ) * 0.1;

   float4 c0 = c9 -c1 ;

   return c0;
}