http://bugs.freedesktop.org/show_bug.cgi?id=16593
Summary: [vblank]the buffer swap is too slow when run
"vblank_mode=2 ./glswap"
Product: Mesa
Version: unspecified
Platform: Other
OS/Version: Linux (All)
Status: NEW
Severity: normal
Priority: medium
Component: Drivers/DRI/i915
AssignedTo: [email protected]
ReportedBy: [EMAIL PROTECTED]
CC: [EMAIL PROTECTED]
Created an attachment (id=17488)
--> (http://bugs.freedesktop.org/attachment.cgi?id=17488)
dmesg
System Environment:
--------------------------
--Platform:gm965
--Architecture:32-bit
--2D driver: master 55678c64bc6e3ed613ea6db14c105c18a0cf28ce
--3D driver:master d3f7b463c3975c070503053e4ad70af99016a756
--DRM: master 5d27fd94afaaf434c3a92af0075420b550055bfb
--Xserver:master e4335e876d254e446a965259e845ad955da5b5c2
--Kernel:2.6.26-rc6
Bug detailed description:
--------------------------
when run glswap with vblank_mode=2,the buffer swap is too slow ,but sometime
it also can work well.and it also happens on 945gm.In dmesg we can get the
error info: [drm:i915_get_vblank_counter] *ERROR* trying to get vblank count
for disabled pipe 0]
Reproduce steps:
----------------
1. startx
2.vblank-mode=2 ./glswap
Current result:
----------------
run at a low preformance
Expected result:
----------------
work well
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