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Robert Bragg a945890de6 Workaround drisw bug where clipped redraws don't work
This detects when we are running on any of Mesa's software rasterizer
backends and disables use of glBlitFramebuffer and glXCopySubBuffer.
Both of these currently result in full-screen copies so there's little
point in using these to optimize how much of the screen we present.

To help ensure we re-evaluate this workaround periodically we have added
a comment marker of "ONGOING BUG" above the workaround and added a note
to our RELEASING document that says we should grep for this marker and
write a NEWS section about ongoing bug workarounds.

https://bugzilla.gnome.org/show_bug.cgi?id=674208

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit 11f2f6ebb42398978ec8dd92b3c332ae8140a728)
2012-08-06 14:27:42 +01:00
..
reference doc: Fix a couple of renamed symbols 2012-08-06 14:27:41 +01:00
CODING_STYLE Switch use of primitive glib types to c99 equivalents 2012-08-06 14:27:39 +01:00
Makefile.am build: Distribute CODING_STYLE 2011-05-06 18:56:38 +01:00
RELEASING Workaround drisw bug where clipped redraws don't work 2012-08-06 14:27:42 +01:00