util/drirc: add workarounds for bugs in Doom 3: BFG
This makes the game playable on radeonsi. Cc: "19.0" "19.1" <mesa-stable@lists.freedesktop.org> Reviewed-by:Samuel Pitoiset <samuel.pitoiset@gmail.com> Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=110143