[PD] GEM on Raspberry Pi

Francisco Medeiros excalibas at gmail.com
Mon Dec 11 12:52:31 CET 2017

I have compiled Gem on the pi3 and it compiles fine and the examples run
ok. If there are some magic optimization flags that make it run even better
I world also like to know :)

There is one important issue about the OpenGL driver tho. On the latest
raspbian Stretch the OpenGL driver runs at 1/4 the speed of the previous
raspbian Jessie so I recommend to use Jessie instead for now. You can get
it here:


"For OpenGL 2.1, you need any version from September 2016 onwards. The last
version is 2017-01-11-raspbian-jessie-lite.img"

I got this information from here:


There are other tips in that page that can help.

Another issue is that with the OpenGL driver you can only use the HDMI
output. No composite out for now.

On 10 December 2017 at 23:02, Fede Camara Halac <camarafede at gmail.com>

> Indeed, you are right. I will try to find the flags I used. I remember
> trying to use the raspbian package and not succeeding, hence my need to
> compile. But I can't prove that right now. I will try later this week.
> i'm interested in those optimization flags, though :)
> fdch.github.io/tv
> > On Dec 10, 2017, at 5:27 PM, IOhannes m zmölnig <zmoelnig at iem.at> wrote:
> >
> > you must provide those flags to enable optimization, and from your
> > description it doesn't sound like you did.
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