Comment # 20 on bug 49817 from San Zamoyski

Works fine now with:

glxinfo | grep -i opengl
OpenGL vendor string: X.Org
OpenGL renderer string: Gallium 0.4 on AMD ARUBA
OpenGL core profile version string: 3.3 (Core Profile) Mesa 10.6.0-devel
(git-9450bd5 2015-04-22 trusty-oibaf-ppa)
OpenGL core profile shading language version string: 3.30
OpenGL core profile context flags: (none)
OpenGL core profile profile mask: core profile
OpenGL core profile extensions:
OpenGL version string: 3.0 Mesa 10.6.0-devel (git-9450bd5 2015-04-22
trusty-oibaf-ppa)
OpenGL shading language version string: 1.30
OpenGL context flags: (none)
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 10.6.0-devel (git-9450bd5
2015-04-22 trusty-oibaf-ppa)
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00
OpenGL ES profile extensions:

Thanks!