On Thu, Aug 6, 2009 at 1:29 PM, Joel Webber <j...@google.com> wrote: > If we want to support IE6 fully (which I hate having to do, but it's hard > to argue with the fact that it still account for ~20% of the market, > depending upon whose stats you use), then I think this is basically the only > approach that will work. We all agree that the DirectX filter is far too > memory hungry, especially on the old machines that are often still running > IE6. Bundling images with disparate palettes into a single 8-bit image is > far too unpredictable, which seems pretty unacceptable to me. So I will > argue that we should, on IE6: > - Leave GIFs alone. >
Even those without transparency? > - Turn PNGs with transparency into GIFs. > - Open question: How should we clamp the [0, 255] alpha channel to [0, > 1]? > If we have to do that anyway, why not just make them 1-bit alpha PNGs? > - Bundle only those images without transparency into PNGs. > - Stop using the DirectX filter altogether. > > Does anyone have any really strong objection to this approach? It will add > some extra requests on IE6 under some circumstances, but that's got to be > better than either (a) completely mangling bundled images, or (b) blowing > massive amounts of memory. > If we leave all GIFs alone, I suspect that will remove image bundle benefits on IE6 in most instances. I am not sure why we need to leave them alone if they don't have transparency -- why not treat them as we do today? -- John A. Tamplin Software Engineer (GWT), Google --~--~---------~--~----~------------~-------~--~----~ http://groups.google.com/group/Google-Web-Toolkit-Contributors -~----------~----~----~----~------~----~------~--~---
