freedreno: add gmem_lock
The gmem state is split out now, so it does not require synchronization.
But gmem rendering still accesses vsc state from the context.
TODO maybe there is a better way? For gen's that don't do vsc resizing,
this is probably easier.. but for a6xx there isn't really a great
position for more fine grained locking. Maybe it doesn't matter since
in practice the lock shouldn't be contended.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/merge_requests/3503>
projects / mesa.git / commit