Versions prior to the r1p0 revision of Mali-T760 has a bug that prevents
16x MSAA from working properly. Let's detect this GPU, and disable the
functionality for it.
It's a bit awkward that we can't easily do this as part of the pan_model
infrastructure, but we'd otherwise have to introduce a new quirk that
depends on the GPU revision, which isn't something the current pan_model
infrastructure is prepared for. So let's just do it in get_max_msaa()
instead.
And while we're at it, let's also make the max_4x_msaa quirk do the
MIN2() properly. This can currently only happen on V4 GPUs when the
pan_allow_128bit_rts_v4 driconf is enabled, but it should be fixed in
either case.
Fixes: 423f3fd485 ("panfrost: enable 8x and 16x msaa modes when supported")
Reviewed-by: Daniel Stone <daniels@collabora.com>
Reviewed-by: Lars-Ivar Hesselberg Simonsen <lars-ivar.simonsen@arm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35871>
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