pr-13346-c3308b vs. 2412-270 / ogl-lin-mesa / rs2-skybox

pr-13346-c3308b (c3308bdb) Diff 2412-270 (c770e7c2)
Failure 43b51dc16f84a369afad6816446816ee963b1a4b
Failure 037eb8b3176e847bc429dd04cf413e2f86d0c717
Failure 76b0106796352ca4524672916640d37f94c12e2e