util/set: Fix the _mesa_set_clear function to not leave tombstones.
This implementation was broken and should have just been the same as the
hash_table_clear() one, which I copied over here. It was setting all
formerly-present entries to deleted, yet also setting deleted_entries to
0. This meant that all new searches or additions after clearing would
have to reprobe the whole table until a rehash happened, and that rehash
would be delayed because we violated the deleted_entries invariant.
No statistically significant performance difference on softpipe
KHR-GL33.texture_swizzle.functional runtime (n=18)
Fixes: 5c075b085585 ("util/set: add a set_clear function")
Reviewed-by: Jason Ekstrand <jason@jlekstrand.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7244>
(cherry picked from commit 2afdd94f86149295f3e9422672c4501092f671d6)
2 files changed
