Bug 23658

Summary: _mesa_meta_clear() breaks glxgears until resized
Product: Mesa Reporter: Alex Deucher <alexdeucher>
Component: Drivers/DRI/R100Assignee: Default DRI bug account <dri-devel>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: medium    
Version: git   
Hardware: Other   
OS: All   
Whiteboard:
i915 platform: i915 features:
Attachments: first guess patch/fix

Description Alex Deucher 2009-09-02 14:45:03 UTC 
On r600 _mesa_meta_clear causes the glxgears to only show the old backbuffer until the window is resized.  meta_clear_tris worked.

commit 18916986b4a7155e3cba2efb5dfd79dc561cfa41
Comment 1 Alex Deucher 2009-09-02 14:57:00 UTC 
MrCooper suggested that the new meta clear code avoid redundant viewport calls which may be the cause of the problem.
Comment 2 Brian Paul 2009-09-02 15:10:42 UTC 
Created attachment 29125 [details] [review]
first guess patch/fix

Does this patch help?
Comment 3 Alex Deucher 2009-09-02 15:28:35 UTC 
No.  Same behavior as before.
Comment 4 Brian Paul 2009-09-02 15:49:09 UTC 
Could you do a little debugging and check that the vertex positions in _mesa_meta_clear() are correct?
Comment 5 Alex Deucher 2009-09-03 15:06:20 UTC 
fixed in 6a97cca0817b743e0633ff76630a5bef24469d1b.

The render buffer target state wasn't set up in some cases so it never got emitted.

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