On Wed, Dec 20, 2000 at 08:19:01PM +0000, Nick Lamb wrote: > > In the border cases (alpha = 0, alpha = 255) this produces exact > > results. In the intermediate ones, the maximum difference between > > doing a "slow but accurate" division and all this bit twiddling is at > > most 1. So it is just what you want. > > This would probably be OK for display, but it's not acceptable in the > Gimp's internals where errors might propagate. Oh, this reminds me something about the alpha channel I would qualify as a bug, but maybe I misunderstood something: Alpha to selection + invert + paint does NOT fill the whole alpha channel. Is this the correct behaviour ? Steps to reproduce: - New image/100x100 RGB White - Foreground color: Black - Filters/Render/Pattern/Grid/1 2 0 - New layer/100x100 Transparent - Foreground color: Red - Brush: Circle Fuzzy 19 - Tool: Paint brush => Do draw something (let's say: a cross) - Layers/Alpha to selection - Select/Invert - Tool: Fill (options: 100 Normal 255) => Do fill You should have a red square, but the cross is still here. Jerome.
