copy_dup_density.cg.bak

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void main(float2 sn_coord : TEXCOORD0,
		  /**	
		  y  : subject particle index
		  xy : neighbour particle index
		  **/
		  uniform samplerRECT density_rect   : TEXUNIT0,
		  uniform samplerRECT neighbour_rect : TEXUNIT1,
		  out float result : COLOR
		  )
{
	float neighbour_index = f1texRECT(neighbour_rect, sn_coord.yx);
	result = f1texRECT(density_rect, unpack_2ushort(neighbour_index)*65536);

	//result = 44;
	//result = neighbour_index;
	//result.xy = (unpack_2ushort(neighbour_index)*65536);
}