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List:       kde-devel
Subject:    Re: plans for a free, OpenGL-based equivalent to Direct2D ?
From:       Benoit Jacob <jacob.benoit.1 () gmail ! com>
Date:       2011-04-26 21:21:42
Message-ID: BANLkTinmdxT9zj8n_VwX_3eBBQWmhVhReg () mail ! gmail ! com
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Hi again,

Just letting you know that this has turned into a real project at Mozilla:
http://blog.mozilla.com/joe/2011/04/26/introducing-the-azure-project

This is being developed in this repository:
http://hg.mozilla.org/projects/graphics

-> specifically the gfx/2d/ directory.

This code is mostly self-contained with very few Mozilla-specific dependencies.

Benoit

2010/12/14 Benoit Jacob <jacob.benoit.1@gmail.com>:
> Hi,
>
> I would like to know if the KDE or Qt community has plans for a free
> OpenGL-based equivalent to Direct2D (see explanation below)? And if
> there is a chance that I could get you interested in that. We at
> Mozilla are very interested in that and are considering the
> possibility of launching such a project:
>
> https://wiki.mozilla.org/Gecko:2DGraphicsThoughts
>
> It would be interesting for us to know your opinions on the subject.
>
> First of all, by "2D", I mean "advanced 2D", with text etc. So please
> don't close this thread by saying that 2D is a special case of 3D
> hence OpenGL is all I need ;-)
>
> Let's review the possibilities we currently have for
> hardware-accelerated 2D rendering:
> * XRender/OpenGL back-ends to QPainter/Cairo.
>  -> problem: the Cairo API is in our experience inherently unsuitable
> for hardware acceleration and my impression is that the same applies
> to QPainter. The result is disappointing acceleration factors. (Stop
> me if I'm wrong).
> * scene-graph APIs. For example, I saw planetkde posts about a future
> scene graph API in Qt. Here, I'm talking about the *advanced* use
> cases where you want more control than a scene graph API can provide.
>
> Microsoft has an answer to this problem: Direct2D. If we want to cover
> advanced 2D needs with hardware acceleration on non-Windows platforms,
> we need something like Direct2D, but based on OpenGL. For example, if
> you ever want to get a world-class fully Qt-based Web browser *with*
> GPU-accelerated rendering, you'll need something like that. Ditto for
> compex enough 2D games (a scene graph API can only be enough for
> simple games), for Calligra...
>
> So, do you (KDE or Qt) already have plans in this area? If we were to
> launch such a projects, would you see a use for it, and are there any
> particular reasonable things we should keep in mind to keep you
> interested and potentially able to contribute to the effort?
>
> Cheers,
> Benoit
>
 
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