glxinfo | grep render
direct rendering: Yes
GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer,
GLX_MESA_multithread_makecurrent, GLX_MESA_query_renderer,
OpenGL renderer string: Mesa DRI Intel(R) Broadwell
GL_NV_conditional_render, GL_NV_depth_clamp, GL_NV_packed_depth_stencil,
GL_NV_blend_square, GL_NV_conditional_render, GL_NV_depth_clamp,