On Fri, Sep 21, 2012 at 7:49 PM, Rik Cabanier <caban...@gmail.com> wrote:
> With both types of shadow, you take the shape of the element and calculate > the blur image. > > With an outer shadow, you take the result of the blur and composite it. > After this, you composite the original shape. > With an inner shadow, you draw the shape first followed by the blur image. > Importantly, the blur image also needs to clipped by the shape before it is > composited. > Also, the blurred image's alpha is inverted. -- Glenn Maynard