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List:       kde-kimageshop
Subject:    Re: Krita performance.
From:       Boudewijn Rempt <boud () valdyas ! org>
Date:       2013-05-21 19:14:07
Message-ID: 1513499.pqDEoGHVJT () linux-ixka ! site
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On Tuesday 21 May 2013 May 21:08:19 Sven Langkamp wrote:

> 
> I think we need to do something significantly different to get to this
> performance level.

Yes, that is my fear as well.

> I don't think the current approach can
> be optimized enough to do it. We discussed that on the last sprint and we
> had no idea what Photoshop is doing. In meantime they are going for GPU
> support like Mari.

There must also be something with deferred processing or something like that. There's \
no way one is going to get a 14032x9632 in 32f in gpu memory, not even on a quadro \
400 and still have space for something else...

I've been experimenting a bit, and an ordinary layerstack (a4, 300dpi) with a dozen \
layers works fine on my intel gpu and a little bit of graphcis memory, though.

I want to experiment some more here -- but the trick is arriving at

a) a good, extensible technology choice (glsl? cuda? opencl? whatever?)
b) a good, extensible design
c) something that krita can grow into, because we don't want to do full rewrites (I \
hope...)

 
-- 
Boudewijn Rempt
http://www.valdyas.org, http://www.krita.org, http://www.boudewijnrempt.nl

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