Re: [Chromium-dev] Visbits changes have broken many things

[Brian P. <bri...@tu...>]

Mike, on the readback SPU, try spu.Conf('use_glxchoosevisual', 0)

This tells the Render SPU to not call glXChooseVisual.  For some 
reason, the call doesn't get resolved to the ATI libGL routine, but 
instead, to the faker's glXChooseVisual.  (Of course, this only 
happens when the render/readback SPU is hosted by the app node.)

I think the problem is ATI's libGL wasn't linked with the -Bsymbolic 
option.  But that doesn't explain why glXGetConfig works.  Strange.

The code path for use_glxchoosevisual = 0 was previously the default 
in the Render SPU, but it was causing problems with the NVIDIA drivers 
in particular configurations.  So, the bug work-around is now chosen 
with the config option.

I hope that fixes things for you.

-Brian




Mike Houston wrote:
> This is on Linux, on ATI hardware with 3.14.6 as well as the newest 
> release.  When I get back in on Monday, I'll take a deeper look and send 
> you the output.  It is bailing out as soon as the default context is 
> being created.  It's trying for visual 0x27 (RGBA, double, Z) and can't 
> get it.  Sort-first apps work just fine as well as the sort last apps 
> running locally.
> 
> -Mike
> 
> Brian Paul wrote:
> 
>> Mike Houston wrote:
>>
>>> The changes to visbits seem to have broken all sort-last rendering.  
>>> As a simple example, try readback.conf with atlantis or 
>>> psubmit_last.conf.  We seem to complain that we can't get the 
>>> necessary visual for anything...  Backing off to before the large 
>>> stack of changes to the visbits gets everything working happy again.
>>>
>>> Can someone else please verify this behavior before we start trying 
>>> to track this down?
>>
>>
>>
>>
>> Hmmm.  Both those demos work for me.  And my recent visBits changes 
>> have overall solved several problems for me, so they can't be totally 
>> wrong.
>>
>> Could I see all the debug output from the app/server nodes?
>>
>> Is this on Linux or Windows?
>>
>> Which cards/drivers?
>>
>> -Brian
>>
>> PS: I found a one-line check-in mistake in renderspu_glx.c that'll 
>> I'll fix, but it doesn't change anything here.
>>
>>
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