Around a call to uxa_put_image() it is possible to mix both accelerated
and fallback paths, with the fallback code making the presumed
optimisation of only trying to call uxa_prepare_access() once. This
fails if the accelerated path also uses prepare/finish access on the
same drawable and then later fallback to the fallback path. This can
happen currently if an error is reported whilst attempting to accelerate
PutImage.
#0 memcpy () at ../sysdeps/x86_64/memcpy.S:162
#1 0x00007ffff43ce4bd in fbBlt (srcLine=<value optimized out>, srcStride=40, srcX=<value optimized out>, dstLine=0xffffffffffffffff, dstStride=64, dstX=0, width=<value optimized out>, height=8, alu=3, pm=4294967295, bpp=8, reverse=0, upsidedown=0) at fbblt.c:93
#2 0x00007ffff43ce740 in fbBltStip (src=0xffffffffffffffff, srcStride=156555204, srcX=34, dst=0xfffffffc, dstStride=64, dstX=40, width=304, height=8, alu=3, pm=4294967295, bpp=8) at fbblt.c:944
#3 0x00007ffff4c32c53 in uxa_do_put_image (pDrawable=0x246aa410, pGC=0x2c0a4f0, depth=8, x=0, y=0, w=38, h=8, leftPad=0, format=2, bits=0x954d7c4 "") at uxa-accel.c:196 #4 uxa_do_shm_put_image (pDrawable=0x246aa410, pGC=0x2c0a4f0, depth=8, x=0, y=0, w=38, h=8, leftPad=0, format=2, bits=0x954d7c4 "") at uxa-accel.c:223
#5 uxa_put_image (pDrawable=0x246aa410, pGC=0x2c0a4f0, depth=8, x=0, y=0, w=38, h=8, leftPad=0, format=2, bits=0x954d7c4 "") at uxa-accel.c:289
#6 0x00000000004d574f in damagePutImage (pDrawable=0x246aa410, pGC=0x2c0a4f0, depth=8, x=0, y=0, w=38, h=8, leftPad=0, format=2, pImage=0x954d7c4 "") at damage.c:905
#7 0x00000000004287db in ProcPutImage (client=0x47ca72d0) at dispatch.c:2073
#8 0x000000000042bd94 in Dispatch () at dispatch.c:445
#9 0x000000000042513a in main (argc=4, argv=0x7fffffffe2a8, envp=<value optimized out>) at main.c:285
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
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
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
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