causing our search loop for evictable blocks to possibly skip a good
candiate, and another was the allocator would occasionally use
area->offset as if it was the base of the pixmap, while for a pixmap
that is not in available state, it is not. This caused some funny
miscalculation leading to overlapping pixmaps and accesses beyond the
end of the framebuffer. To make things cleared, I renamed save_offset
to base_offset, made sure it's the one used everywhere in the
allocator, and only align "offset" for the client at the end of
exaOffscreenAlloc().
don't expect drivers to be able to accelerate without exa assistance).
Instead, drop back to plain old miGlyphs for a 62.5% +/- 1.5% reduction
in runtime of my ls -lR test (n=5) with component alpha. While a
reasonable approach would seem to be making a better test to see
whether the entire path would be accelerated and force migration
appropriately, my attempt at this made the situation much worse.
accelerate repeat NPOT thus triggering software fallback (this is the
case with gnome desktop for example). This adds a simple optimisation
to exa that removes "repeat" when it's obviously useless, that is, the
single picture instance covers the entire rectangle beeing used
instead of reporting "unrecognized option" when the argument is
missing. Also give correct error instead of "unrecognized option" for
options only available to root.
so resulted in a solid black glyph if the font rendering actually
resulted in a fallback (subpixel AA, for example) and the temporary got
migrated after 10 or so glyphs.
compatible with glibc, so the backtrace support check fails. Work
around this by wrapping the code in a configure check for execinfo.h,
and emulate detection for the monolith. (Yuri Vasilevski)
- Merge various fb/ bits of COMPOSITE support from xserver, which weren't
necessary before due to cw hiding the issues. Fixes offset calculations
for a number of operations, and may pull some fixes that cairo has
wanted for XAA as well.
- Add a new call, miDisableCompositeWrapper(), which a DDX can call to keep
cw from getting initialized from the damage code. While it would be
cleaner to have each DDX initialize it if it needs it, we don't have
control over all of them (e.g. nvidia).
- Use the miDisableCompositeWrapper() to keep cw from getting set up for
screens using EXA, because EXA is already aware of composite. Avoiding
cw improved performance 0-35% on operations tested by ajax in x11perf.