This is the counterpart of get_oq_index for non-occlusion hardware queries.
These are not tracked with occlusion queries, since occlusion query allocations
are limited, and they are not based on indexing but rather general
batch-allocated space.
Signed-off-by: Alyssa Rosenzweig <alyssa@rosenzweig.io>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24847>