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From Noel Grandin <noelgran...@gmail.com>
Subject Re: Double buffering of components
Date Fri, 20 Jan 2012 14:35:54 GMT
note that you have to enable double-buffering explicitly on a 
per-component basis.

On 2012-01-20 16:13, Piotr Kołaczkowski wrote:
> Hmm,
>
> Can't see a difference. But I have to profile it to see what is 
> causing the slowdown.
> Thanks for the patch.
>
> -- Piotr
>
> W dniu 20.01.2012 13:53, Noel Grandin pisze:
>>
>> Hmm, interesting idea.
>>
>> This is a prototype patch. Try it out and let me know how it goes.
>>
>> -- Noel Grandin
>>
>> On 2012-01-20 11:09, Piotr Kołaczkowski wrote:
>>> Hi,
>>>
>>> Is there support for explicit double-buffering of components 
>>> (especially windows) like it is in Swing?
>>> Currently I faced another performance problem - imagine a top level 
>>> Window with a one single Frame open in it.
>>> The Window contains an animation, that needs to be repainted at >30 
>>> FPS. When I issue the repaint, not only the window gets repainted, 
>>> but also the parts of the frame that happened to be inside the 
>>> repaint region (if the user shadows a part of the animation with the 
>>> frame, the frame gets the repaints).
>>> For complex Frames with lots of components inside them, it may be 
>>> slow. And it is not needed, because I actually haven't changed 
>>> anything inside the frame, so it is perfect case for double 
>>> buffering and drawing the whole frame with a single drawImage 
>>> statement.
>>>
>>> So, is there a workaround now for this? Is this planned?
>>>
>>> Regards,
>>> Piotr
>>>
>
>

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