a1cb58243b
This will allow call merging inside execute callbacks because they can iterate the batch and return how many slots they consumed. Reviewed-By: Mike Blumenkrantz <michael.blumenkrantz@gmail.com> Reviewed-by: Rob Clark <robdclark@chromium.org> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10662>