We are about to allow any type that is not FLOAT on v9+ at the
pan_afbc_format() level, but this regresses
dEQP-GLES31.functional.copy_image.non_compressed.viewclass_16_bits.*_snorm*
tests because of the clamping that's done on values that fall outside
the [-2^(b-1)+1, 2^(b-1)-1] range (b being the number of bits in the
SNORM component).
In order to fix that, we would have to use a _UNORM type when copying,
but:
1. There are many places where internal copies can happen and it's hard
to identify all of them
2. If we do it at the panfrost_blit_no_afbc_legalization() level, we
might do format re-interpretation that's not wanted by the gallium
layer
Given AFBC(SNORM) has not been supported so far, let's just go for the
simple solution and filter it out explicitly in panfrost_should_afbc().
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Christoph Pillmayer <christoph.pillmayer@arm.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/37158>
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