[cairo-bugs] [Bug 51251] New: Cairo 1.12.2 slow rendering

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=51251

             Bug #: 51251
           Summary: Cairo 1.12.2 slow rendering
    Classification: Unclassified
           Product: cairo
           Version: 1.12.2
          Platform: Other
        OS/Version: Linux (All)
            Status: NEW
          Severity: normal
          Priority: medium
         Component: general
        AssignedTo: cworth at cworth.org
        ReportedBy: csaba+freedeskbugs at lowlife.hu
         QAContact: cairo-bugs at cairographics.org


Certain applications like gvim perform very slow rendering with certain fonts
like Fixed (as of gvim naming).

As far as I can see "Fixed" is not a ttf font (seems to be loaded from
/usr/share/fonts/misc/6x12-ISO8859-1.pcf.gz file that belongs to
xorg-fonts-misc package).

Screencast: http://youtu.be/OnNNpOQrx18

Downgrading to 1.10.2 fixes the issue. A similar bug exists in the database:
https://bugs.freedesktop.org/show_bug.cgi?id=48395 but that's for nvidia cards
while I have an intel card.

System info:

$ uname -a
Linux eartheart 3.4.2-2-ARCH #1 SMP PREEMPT Mon Jun 11 22:27:17 CEST 2012
x86_64 GNU/Linux
$ lspci | grep -i graph
00:02.0 VGA compatible controller: Intel Corporation Core Processor Integrated
Graphics Controller (rev 02)
$ grep -i chipset /var/log/Xorg.0.log
[ 35.233] (II) intel: Driver for Intel Integrated Graphics Chipsets: i810,
[ 35.244] (II) intel(0): Integrated Graphics Chipset: Intel(R) Arrandale
[ 35.244] (--) intel(0): Chipset: "Arrandale"
$ pacman -Q | egrep 'cairo|intel'
cairo 1.12.2-2
cairo-perl 1.082-2
cairomm 1.10.0-2
haskell-cairo 0.12.3.1-1
intel-dri 8.0.3-3
lib32-cairo 1.12.2-1
libva-driver-intel 1.0.18-1
python2-cairo 1.10.0-1
xf86-video-intel 2.19.0-3

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