On Tue, 11 Mar 2003 17:08:43 -0800 Daniel Rogers <daniel@xxxxxxxxxxxxxxxxx> wrote: > David Necas (Yeti) wrote: > > But then I, as a user, don't care about alpha, and what > > I really care about is transparency. So everything what was > > said can be repeated, only s/alpha/transparency/. My need > > for pixels retaining their properties even in invisible > > state didn't disappear. > > I think that is an excellent point, and a big vote for using > un-premultiplied images (in fact, the only vote for using > unpremultiplied images) As Nick Lamb already noted, there is another good argument against pre-multiplied alpha: loss of precision. When you're using a single byte per color that could be a serious problem. greetings, Ernst Lippe
