Comment 11 for bug 1661375

gzotti (georg-zotti) wrote :

News from this issue, see also https://github.com/anholt/mesa/issues/62.

Instructions: On Raspbian Stretch, you still must build libdrm and Mesa17 as described by Eric Anholt at https://github.com/anholt/mesa/wiki/VC4-complete-Raspbian-upgrade, then build Stellarium 0.16+ from sources, else use installable 0.15.0. On Ubuntu Mate 16.04.3 LTS you must activate VC4 overlay as described at https://ubuntu-mate.community/t/tutorial-activate-opengl-driver-for-ubuntu-mate-16-04/7094, then install latest Stellarium from our ppa.

Open issues:
- rendering of 3D OBJ planets causes driver messages and does not work.
- some out-of-memory problems (?) leading to system freeze, exit-to-black-screen or other bad behaviour. Not sure yet what causes this and how to avoid.

Else Stellarium/trunk works quite well also here now with up to 30fps (typically rather 12-20fps) on a 1400x1050 screen -- faster than my AMD netbook. Just don't overstress it.

But yes, it seems there is some slight performance loss between 0.15.0 and 0.16, maybe with the QOpenGLWidget switch :-(