Done, sorry for the mixup[ BTW - this discussion really should be on gtk-devel-list since it is about modificatins to GTK+ ]
True, but qt/kde seems to handle this transparently.Havoc Pennington <hp redhat com> writes: > On Mon, Dec 23, 2002 at 10:31:36AM -0500, btouchet wrote: > > Unfortunately i have pretty much exhausted the time i could use to take > > a look at this, what i would like to know is how hard would it be to get > > this working correctly? What files need tweaking to set some way of > > setting gtk/gnome to respect either 8 or 10 bits per RGB? > > Probably the pixbuf to/from image code (gdk/gdkpixbuf-*.c) would need > to handle the 10-10-10 RGB case. That should take care of the missing > icons. For fonts, I can't imagine why they would break if not using > Xft, so I'm not sure what needs fixing there. If using Xft, Xft is > probably what needs fixing rather than GTK. Note that most Linux > distributions are defaulting to Xft in newer releases. > > Your easiest route may be: get at least one driver that people > commonly use in XFree86 to default to 10-10-10. Then the free software > community will fix the issue quickly on its own. Probably not really feasible, even though several high-end consumer cards now support 10-10-10 ... there just is no good reason to use this, if all your source images are 8-bit.
I had already seen some of this when i was going through the code. Good to know whereFixing up GDK for 10-10-10 should be straightforward; aside from perhaps a few tweaks in gdkvisual-x11.c, all you should need to change is gdkrgb.c and gdkpixbuf-drawable.c. In fact, both of these have slow fallbacks for unsupported depths, so if they aren't working at all, it may well just be a matter of bug fixing. (But you probably want to add special-casing, for speed.)
That i haven't had a chance to look at yet (render/xft). I will try to find some time after the holidays to go through this.The bigger program is going to be the RENDER extension in XFree86; you might be able to get a quick hack going easily where it just ignored the low bits, but making it actually handle 10-10-10 colors is going to be harder, since the code makes a lot of use of passing around RGBA color components packed into a 32-bit word. Also, I'm not sure RENDER has a good definition of the correct arithmetic for depths > 8 yet. If the RENDER extension isn't advertised, then the code that needs fixing to get antialiased fonts drawing is in the Xft library.
btouchet <btouchet matrox com>
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