Bug 13006

Summary:

GLX display broken (partially, stripe-y, rolling display of e.g. glxgears)

Product:

xorg

Reporter:

Jens Stroebel <dr-xorg>

Component:

Server/General

Assignee:

Xorg Project Team <xorg-team>

Status:

RESOLVED FIXED

QA Contact:

Xorg Project Team <xorg-team>

Severity:

normal

Priority:

medium

CC:

pierre

Version:

git

Hardware:

x86 (IA32)

OS:

Linux (All)

Whiteboard:

i915 platform:

i915 features:

Attachments:

Description	Flags
snapshot of broken glxgears display	none
another snap of broken glxgears display	none
glxinfo for xserver w. GLX problems	none

Description Jens Stroebel 2007-10-30 06:26:30 UTC

after trying xorg from git of today (2007-10-30), we noticed a severely broken display of windows with GLX content. The GLX content has stripes of not-painted space "rolling" over it's surface (fast vertical movement of the stripes).

This is true for glxgears, too, so should be easily reproduceable. Talk on IRC suggests that this is true regardless of the (video-)driver used.

The issue does not appear if commits

"a5546a99ac4da61aee0d49c55bcb38bbce9a96aa" and "692654b4300e61a9481e6fa588bcb44a3c3ca150" 

are reverted. So one of them or both cause the described behavior.

Comment 1 Jens Stroebel 2007-10-30 07:17:13 UTC

Created attachment 12257 [details]
snapshot of broken glxgears display

as you'll notice, 2 wheels are missing

Comment 2 Jens Stroebel 2007-10-30 07:18:33 UTC

Created attachment 12258 [details]
another snap of broken glxgears display

as you'll notice, one whell is missing , one of the displayed wheels is in the process of being re-displayed..

Comment 3 Jens Stroebel 2007-10-30 07:25:15 UTC

Created attachment 12259 [details]
glxinfo for xserver w. GLX problems

Comment 4 Pierre Willenbrock 2007-11-01 15:57:20 UTC

For me, the stripes go away when glxgears renders using AIGLX(i.e. with LIBGL_ALWAYS_INDIRECT=1).

Comment 5 Jens Stroebel 2007-11-06 07:58:54 UTC

here, the described effect does no longer occur.

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