Skip empty source pixels when blending an image. There can be hundreds of images to blend at each frame, so this brings a nice performance boost. https://bugzilla.gnome.org/show_bug.cgi?id=753821
Skip empty source pixels when blending an image. There can be hundreds of images to blend at each frame, so this brings a nice performance boost. https://bugzilla.gnome.org/show_bug.cgi?id=753821