https://bugs.freedesktop.org/show_bug.cgi?id=78453
--- Comment #12 from Michel Dänzer michel@daenzer.net --- Note that 2D contents use 3D hardware acceleration as well via glamor. For these tests, it might be best to use as little 2D as possible, e.g. just a bare X server without -retro and glxgears, or even something like es2gears without X at all.