These buffers get recycled, so we can't rely on their contents.
Unfortunately, conditional rendering was relying on these buffers being
all zero, implicitly, because we didn't fully understand the hardware.
By supporting this debug flag here, we add a way to check for code that
accidentally assumes zero-initialization.
Reviewed-by: Faith Ekstrand <faith.ekstrand@collabora.com>
Reviewed-by: Mary Guillemard <mary@mary.zone>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37153>
Mel Henning
27ca1c28c0