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Chris Wilson a4d5d72599 sna: Experiment with GTT mmapped upload buffers 
In a few places, we can stream the source into the GTT and so upload in
place through the WC mapping. Notably, in many other places we want to
rasterise on a partial in cacheable memory. So we need to notify the
backend of the intended usage for the buffer and when we think it is
appropriate we can allocate a GTT mapped pointer for zero-copy upload.

The biggest improvement tends to be in the PutComposite style of
microbenchmark, yet throughput for trapezoid masks seems to suffer (e.g.
swfdec-giant-steps on i3 and gen2 in general). As expected, the culprit
of the regression is the aperture pressure causing eviction stalls, which
the pwrite paths sidesteps by doing a cached copy when there is no GTT
space. This could be alleviated with an is-mappable ioctl predicting when
use of the buffer would block and so falling back in those cases to
pwrite. However, I suspect that this will improve dispatch latency in
the common idle case for which I have no good metric.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
 		2012-01-14 18:13:47 +00:00
m4 Update autotools configuration 2011-02-09 11:46:19 +00:00
man Fix man page formatting 2011-08-01 15:37:29 +01:00
src sna: Experiment with GTT mmapped upload buffers 2012-01-14 18:13:47 +00:00
test sna: Support performing alpha-fixup on the source 2012-01-06 17:50:01 +00:00
uxa uxa/glamor: Route some missing drawing function to glamor 2012-01-03 21:35:04 +00:00
.gitignore gitignore: add git_version.h 2011-09-09 23:15:58 +01:00
AUTHORS AUTHORS: Add Robert Lowery to the authors file 2009-04-15 18:07:17 -07:00
COPYING COPYING: replace stub file with actual Copyright notices. 2010-06-12 20:24:10 -04:00
Makefile.am Compile out UXA if so desired 2011-11-16 22:15:39 +00:00
NEWS NEWS: Release notes for 2.17.0 2011-11-16 23:13:44 +00:00
README Take note for Pineview support in README and manpage 2010-01-04 14:15:41 -08:00
RELEASING Increment version to 2.9.0 2009-09-28 20:03:39 -07:00
autogen.sh Update autotools configuration 2011-02-09 11:46:19 +00:00
configure.ac configure: Bump the required pixman version 2011-12-19 15:39:06 +00:00

README 

xf86-video-intel
Open-source X.org graphics driver for Intel graphics
http://www.intellinuxgraphics.com/

What is xf86-video-intel
------------------------
The xf86-video-intel module is an open-source 2D graphics driver for
the X Window System as implemented by X.org. It supports a variety of
Intel graphics chipsets including:

	i810/i810e/i810-dc100,i815,
	i830M,845G,852GM,855GM,865G,
	915G/GM,945G/GM/GME,946GZ
	G/GM/GME/Q965,
	G/Q33,G/Q35,G41,G/Q43,G/GM/Q45
	PineView-M (Atom N400 series)
	PineView-D (Atom D400/D500 series)

Where to get more information about the driver
----------------------------------------------
The primary source of information about this and other open-source
drivers for Intel graphics is:

	http://intellinuxgraphics.org/

Documentation specific to the xf86-video-intel driver including
possible configuration options for the xorg.conf file can be found in
the intel(4) manual page. After installing the driver this
documentation can be read with the following command:

	man intel

Mailing list for communication with users and developers of
xf86-video-intel:

	intel-gfx@lists.freedesktop.org

	Note: Subscription is required before posting, but anyone is
	free to subscribe. See instructions (and archives) here:

	http://lists.freedesktop.org/mailman/listinfo/intel-gfx

To report bugs encountered with the driver, see:

	http://intellinuxgraphics.org/how_to_report_bug.html

To see bugs that are targeted to be fixed in the next release:

	https://bugs.freedesktop.org/show_bug.cgi?id=intel-2d-release