[Bug 15372] Single-pass black or white subpixel text

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=15372


Owen Taylor <otaylor at redhat.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement
          Component|Driver/Radeon               |Acceleration/EXA
            Summary|Accelerating component alpha|Single-pass black or white
                   |                            |subpixel text




--- Comment #1 from Owen Taylor <otaylor at redhat.com>  2008-04-05 21:12:48 PST ---
The multipass method is, as it turns out, already there as
exaTryMagicTwoPassCompositeHelper.

(One problem with turning on logging of fallbacks in the driver
is it's hard to tell whether, once the driver bounces an operation, 
if it goes to software or to something better...)

So the main point of this bug is a more-or-less minor
optimization of white and black text. Both of those optimizations
could be done in the generic exa layer, and probably should,
so I'm going to move the bug.

The prerequisite may be more intelligent handling of solid colorsm
both the legacy 1x1 surfaces and RenderCreateSolidFill.
(Right now we don't accelerate pictures created by RenderCreateSolidFill
at all!)


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