On Wed, 2003-03-12 at 00:03, Daniel Rogers wrote: > Adam D. Moss wrote: > > The idea isn't that the layer mask usurps image alpha, but > > that traditional paint/fill tools are generally used to increase > > opacity and define colour simultaneously (they do), while layer > > masks are extremely handy ways to safely experiment with eroding > > opacity away again as a logically separate composition step rather > > than a destructive processing of the RGBA data. > > > > --Adam > > I like this distinction. This should be written down somewhere. > Probably in the manual (if it isn't already). This clearly describes > precisely what approach to use when. Related to this, I would love to have a function that would enable me to create a layer mask from alpha channel or apply it to the existing mask. That way it would be possible to increase opacity with a layer mask by first applying the alpha channel to the mask and then 'darkening' the layer mask. To me this is a missing link between alpha channel and mask. We already have similar function when working with selections/channels. cheers -- Jakub Steiner <jimmac@xxxxxxxxxx> Ximian, Inc.
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