That is correct, there is presently no way to run Gem on the RPi.  There was some work done on porting Gem to OpenGL ES in the past, sounds like someone should revisit that since there is demand.  It would mean that Gem would also run on Android and iOS.

.hc

On Dec 14, 2012, at 12:07 PM, Iain Mott wrote:

> Sorry if this has already been answered, but is it possible to run GEM
> on the raspberry pi?
>
> I've just installed the Pd-0.43.3-extended-20121004.deb file from
> http://puredata.info/downloads/pd-extended-0-43-3-on-raspberry-pi-raspbian-wheezy-armhf
>
> So far so good, but when I try to open a gemwin the following error
> occurs:
>
> "GEM: X server has no OpenGL GLX extension"
>
> Googling for info I came across this:
>
> *****
>
> GLX is an extension to the X windows server which allows GL programs to
> pass their commands through to the underlying renderer. On the pi there
> are two fundamental problems:
>
> 1) GLX is currently only designed to support OpenGL, not OpenGL ES. RPi
> doesn't actually support OpenGL, just OpenGL ES (1.1 and 2.0).
>
> 2) The underlying xf86-video driver needs to support GLX. The default X
> driver for the pi right now is the fbdev driver, which doesn't support
> GLX. I don't know of any drivers that are working on GLX support, but
> they'd have to provide some kind of translation mechanism as well to
> convert unsupported GL calls into their GL ES equivalents.
>
> For the foreseeable future, you're probably out of luck.
>
> *****
>
> Is that the case? Is there no way of running GEM on the raspberry pi at
> present?
>
> Cheers,
>
> Iain
>
>
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