ac/nir/tess: rewrite tess level tracking, don't use LDS for more cases
This rewrites tess level value tracking to use the 2-bit masks, which
means LDS allocation is determined separately for outer and inner levels.
LDS is not allocated for tess levels that are only written by invocation 0
and never read or only read by invocation 0. If the number of output
patch vertices is 1, LDS is also not allocated for tess levels.
Tess level outputs for TES are always written as whole vec4 to get cached
bandwidth.
Reviewed-by: Timur Kristóf <timur.kristof@gmail.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34780>
1 file changed
