GFX10 has a hw bug and it can't handle 0-sized index buffer. The
non-indirect draw path was fine but not the indirect path where RADV
emits the index buffer.
This fixes flakes with dEQP-VK.*maintenance6* on NAVI14, and possibly
GPU hangs if there is an indirect draw with a valid index buffer right
before because it would re-use the same index buffer.
Fixes: db9816fd66 ("radv: add support for NULL index buffer")
Signed-off-by: Samuel Pitoiset <samuel.pitoiset@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27142>
Samuel Pitoiset
783e3c096f