[QtonPi] uClibc and GPU acceleration

[Chris Griffiths]

The drivers exist and work with QT5 now. I can get smooth 1080p output with
many qml elements on screen and even pixel shaders.

I don't run under X or any window manager - QT5 links directly to the
graphics driver. You're always going to be limited by what the ARM core can
do computationally, but the GPU is very powerful for the form factor.

Don't expect a desktop environment from the system - imagine you're
programming for a phone from 2 years ago but with a GPU which can handle
1080p on a big tv.

On Wed, Aug 8, 2012 at 9:08 PM, Mark Constable <markc at renta.net> wrote:

> On 08/08/12 01:05, Laszlo Papp wrote:
> > > . is the software component for full GPU 3D (or 2D) acceleration
> > > available yet?
> >
> > I had the impression that is what Qt3D components would do with
> > the scenegraph underneath.
>
> Thanks Laszlo, I acutally meant the low level binary GPU or kernel
> blobs responsible for gfx acceleration.
>
> Does the RPi have full support for GPU acceleration yet or are we
> still waiting for some magic binary blob... or, is it just the
> reverse engineered open source gfx module that is not yet available?
>
> So far I've used Archlinux with LXDE and the gui response is so bad
> it's just not worth using as it is now. Perhaps Raspbian would be a
> bit snappier but, from what I can see, even a 40% CPU improvement
> would not be enough to make the system usable with a mouse.
>
> I'm just waiting a bit longer for Qt5 to become an RC then I'll try
> it out, possible via an overnight native compile, but I don't hold
> a lot of hope for any half decent performance unless I am missing
> some magical binary blob or whatever GPU accel is available elsewise.
>
> ie; how on earth can I use any software that can play back 1080p
> video like I originally saw reports of for the RPi?
>
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