Comment 2 for bug 1556144

The crash in mir_demo_standalone_render_to_fb appears to be glClear() segfaulting. Invalid context?...

#0 0x00007f0dd3cee7b5 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
(gdb) bt
#0 0x00007f0dd3cee7b5 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#1 0x00007f0dd3ceed31 in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#2 0x00007f0dd3cf021e in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#3 0x000055fdd904a5cb in mir::draw::glAnimationBasic::render_gl (
    this=0x7ffc62fda7d0)
    at /home/dan/bzr/mir/trunk/examples/graphics_utils.cpp:129
#4 0x000055fdd9048e66 in <lambda(mir::graphics::DisplaySyncGroup&)>::<lambda(mir::graphics::DisplayBuffer&)>::operator()(mir::graphics::DisplayBuffer &) const
    (__closure=0x7ffc62fda6e0, buffer=...)
    at /home/dan/bzr/mir/trunk/examples/render_to_fb.cpp:76