Fastest RGB bilinear interpolation

Shared Code
#1

Cn : value of color to interpolate
BX : interpolation ratio X => must range beteen 0-255
BY : interpolation ratio Y => must range beteen 0-255

public int interpolate(int c1,int c2,int c3,int c4,int bX, int bY)
{	
	int f24=(bX*bY)>>8;	
	int f23=bX-f24;	
	int f14=bY-f24;	
	int f13=((256-bX)*(256-bY))>>8; // this one can be computed faster		
	return ((((c1&0xFF00FF)*f13+(c2&0xFF00FF)*f23+(c3&0xFF00FF)*f14+(c4&0xFF00FF)*f24)&0xFF00FF00)|	        
	(((c1&0x00FF00)*f13+(c2&0x00FF00)*f23+(c3&0x00FF00)*f14+(c4&0x00FF00)*f24)&0x00FF0000))>>>8;
}
#2

Don’t you mean “Cn: value of color…” :wink: