[Bf-committers] ati slow swap buffer perfomance

[Ton Roosendaal]

Hi,

I think you missed the release log for 2.34. The problem was located  
and found, which was switching all glFinish calls with glFlush. Please  
verify if it works for you!

-Ton-


On Thursday, Sep 9, 2004, at 11:13 Europe/Amsterdam, john tuffen wrote:

> Hi Tom,
>
>  ... well - as you pointed out - it was a while ago (against something  
> like
> v2.32?). I can take a look when I get home to where the code is  
> (was?). My
> quick hack basically involved removing all of the calls which switched  
> to the
> front buffer (thus drawing things to the back buffer), and adding  
> 'swapbuffers'
> calls at appropriate places to ensure the content was actually  
> displayed. As I
> say, this was a very quick hack, and made menus (in general all of the  
> UI
> interaction in fact) much more responsive. The down side was that all  
> of the
> calls to 'swapbuffers' caused much flickering in vertex-paint mode (on  
> my
> machine). Bringing the build to a different machine to test, I found  
> that all
> of the display flickered all of the time... not good at all.
>
> So, I was at the stage where what I actually wanted was a  
> 'swapbuffers' that
> only worked on small screen areas - or a different approach entirely.
>
> I'll see what code I can find at home, and email it later...
>
> cheers,
>
> john..
>
> --
> http://www.minimism.com/
>
> Quoting Tom Musgrove <tommusgrove__ at hotmail.com>:
>
>> In April and in June there was discussion regarding fixing the slow  
>> drawing
>> of menus for ATI cards..
>>
>> Specifically John Tuffen had mentioned his personal progress in  
>> April, and
>> Ton had mentioned a discussion with Daniel on potential solutions.
>>
>> http://www.blender.org/pipermail/bf-committers/2004-April/005784.html
>> http://www.blender.org/pipermail/bf-committers/2004-April/005791.html
>>
>> http://www.blender.org/pipermail/bf-committers/2004-June/006450.html
>>
>> Is there still a plan to fix this issue?
>>
>> If not, if John is still around could I see your patch?
>>
>> Thanks,
>>
>> Tom M.
>> LetterRip
>
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>
------------------------------------------------------------------------ 
--
Ton Roosendaal  Blender Foundation ton at blender.org  
http://www.blender.org