Dual purpose:
- The drm fd dedupe functionality confuses the radeonsi
amdgpu winsys if radeonsi isn't the first thing opening
the device. By exposing the fd we can detect this case.
- For a common mesa Vulkan sync objects implementation
with syncobj. (notable: no buffer allocation)
Both shouldn't interferece with libdrm_amdgpu functionality
though it does somewhat piece the abstraction of the library.
Signed-off-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl>
Gitlab: https://gitlab.freedesktop.org/mesa/mesa/-/issues/3424
Gitlab: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5630
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
f70e8ae835