public static IntRect GetGlyphBitmapBoxSubpixel(Rect subGlyphBox, Vector2 scale, Vector2 shift)
{
var br = subGlyphBox.BottomRight;
return(IntRect.FromEdgePoints(
tlX: (int)Math.Floor(subGlyphBox.X * scale.X + shift.X),
tlY: (int)Math.Floor(-br.Y * scale.Y + shift.Y),
brX: (int)Math.Ceiling(br.X * scale.X + shift.X),
brY: (int)Math.Ceiling(-subGlyphBox.Y * scale.Y + shift.Y)));
}