[osg-users] Problems with multi-monitor and DrawThreadPerContext mode

Serge Lages serge.lages at gmail.com
Thu Sep 18 09:16:56 PDT 2008


Thanks Wojciech for the tip, I'll try the beta drivers, but could you
explain why CullDrawThreadPerContext should be safer than
DrawThreadPerContext ?

On Thu, Sep 18, 2008 at 6:04 PM, Wojciech Lewandowski <lewandowski at ai.com.pl
> wrote:

> Hi Serge,
>
> Try latest NVidia 177.92 beta drivers. They fixed my latest problems
> related to multithreaded use. Also may I suggest to stick to
> --SingleThreaded and
> --CullDrawThreadPerContext modes while testing ? If everything goes fine
> then try other threading modes. Default threading mode is
> DrawThreadPerContext and is usually not a safest one to work with
> multi-monitor.
>
> Wojtek
>
>
>  Hi Serge,
>>
>>  Anyone has already seen such a problem ? Or anyone has some success with
>>> multi-monitor on WinXP and NVidia cards ?
>>>
>>
>> Search the archives for multi-monitor, Windows XP, NVidia. You'll find
>> extensive discussion in the past few months, with great investigation by
>> Wojtek Lewandowski. But the problem noted then should be worked around by a
>> double MakeCurrent call, so if you're indeed using OSG 2.6+ then perhaps
>> your problem is a different one.
>>
>> Here we use OSG on multi-monitor setups on both XP and Vista and for the
>> most part things work well, though we use the threading mode that OSG
>> chooses for us so I'm not sure it's the same one you use.
>>
>> Sorry I can't help more,
>>
>> J-S
>> --
>> ______________________________________________________
>> Jean-Sebastien Guay    jean-sebastien.guay at cm-labs.com
>>                               http://www.cm-labs.com/
>>                        http://whitestar02.webhop.org/
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-- 
Serge Lages
http://www.tharsis-software.com
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