On Thu, Feb 14, 2013 at 2:12 PM, Robert O'Callahan <[email protected]>wrote:
> On Thu, Feb 14, 2013 at 3:55 PM, Rik Cabanier <[email protected]> wrote: > >> What would happen if you set 'opaque' to true and you draw with alpha and >> 'copy' compositing? It seems that that has the same issue (unless you're >> OK >> with breaking drawing). >> > > The alpha values of all moz-opaque canvas pixels are simply not affected > by compositing. > Exactly! So, this will break drawing as the pixels with no alpha will be black with no way to undo that.
