OpenSCAD grumps about not finding OpenGL 2.0 whenever it starts up on my ancient laptop, which is tedious: that situation just isn’t going to change. Not a fatal error, although I do wonder what the OpenCSG rendering would look like.
On Ubuntu-flavored distros, install driconf, then activate two options (in the Performance and Debugging tabs, respectively):
- Enable limited ARB_fragment_shader support on 915/945
- Enable stub ARB_occlusion_query support on 915/945
And then It Just Works…