Bug 235488 - blender shows display artifacts
blender shows display artifacts
Status: CLOSED CANTFIX
Product: Fedora
Classification: Fedora
Component: blender (Show other bugs)
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All Linux
medium Severity medium
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Assigned To: Jochen Schmitt
Fedora Extras Quality Assurance
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Depends On:
Blocks:
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Reported: 2007-04-06 03:15 EDT by Dean Brettle
Modified: 2007-11-30 17:12 EST (History)
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Doc Type: Bug Fix
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Last Closed: 2007-07-05 13:23:39 EDT
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Attachments (Terms of Use)
Screenshot showing artifacts (52.68 KB, image/png)
2007-04-06 03:15 EDT, Dean Brettle
no flags Details

  None (edit)
Description Dean Brettle 2007-04-06 03:15:16 EDT
Description of problem:

The blender UI has multiple artifacts even when desktop effects and hardware
acceleration is disabled.  Artifacts include: the bottom buttons are not shown
unless I roll the mouse over them, the top menu sometimes disappears, and the
modelling window leaves traces when things are rotated, etc.  

Version-Release number of selected component (if applicable):
blender-2.42a-18.fc7

How reproducible:

Always.

Steps to Reproduce:
1. Boot from fc7-test3-live-i386 CD.
2. yum -y install blender
3. blender
4. drag the middle-button in the main window.
  
Actual results:

Aforementioned artifacts (see attached screenshot).

Expected results:

No artifacts. :-)

Additional info:

My Xorg.0.log files says I have the following graphics card:

(--) PCI:*(1:0:0) ATI Technologies Inc Radeon RV100 QY [Radeon 7000/VE] rev 0,
Mem @ 0xe0000000/27, 0xed000000/16, I/O @ 0xa000/8

The problem does not exist when using the FC6-Zod-Live-i386 CD on the same system.

None of the following fixed the problem under f7-test3-i386:

1. Using: LIBGL_ALWAYS_INDIRECT=1 blender
2. Using driconf to "Disabled 3D Acceleration".
3. Upgrading to xorg-x11-server-Xorg-1.2.99.903-2.fc7 (and logging back in).
4. Replacing blender with the FC6 version (i.e. blender-2.42a-4.fc6.i386.rpm). 
  I had to make some library symlinks to do that test but I got the same artifacts.

glxgears works fine.

Problem also occurs when using f7-test3-live-x86_64.
Comment 1 Dean Brettle 2007-04-06 03:15:16 EDT
Created attachment 151857 [details]
Screenshot showing artifacts
Comment 2 Jochen Schmitt 2007-06-21 14:30:20 EDT
Question:

1.) Doens occured the issue anymore.
2.) If yes, ic the issue occured when you disables the desktop effects.
Comment 3 Dean Brettle 2007-06-22 04:29:23 EDT
I just tried with the final fedora 7 live cd (i386) and the problem still
occurs.  My machine hung when trying to apply all updates after booting from the
CD, so I wasn't able to test with all updates applied.

I did not explicitly enable desktop effects, and I think they are disabled by
default, so I believe the answer to your second question is "yes".
Comment 4 Jochen Schmitt 2007-07-05 13:23:39 EDT
I have create Bug #6912 on the Blender bug tracking system, but I don't assume a
solution for the reported issue.
Comment 5 Jochen Schmitt 2007-07-23 11:56:01 EDT
Upstream wrote, that the issue will caused by the poor OpenGL support of ATI
grapic cards.

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