The referenced commit was a step in the right direction, but not
complete.
ac_build_image_opcode returns a vec<4> or a struct<vec<4>, int>
so we can simplify visit_tex. We just need to map these 4/5 values
to the expected layout from NIR.
eg: depth + TFE would produces "<d, x, x, x>, t" so it has to be
transformed into <d, t>.
nir_texop_fragment_mask_fetch_amd + sparse doesn't exist, so it's
another opportunity for simplification.
This is required to get KHR-GL46.sparse_texture2_tests.SparseTexture2Lookup_texture_2d_depth_component16
working properly.
The same test fails with ACO so it probably needs a change in the
same area.
Fixes: c0ef2aa7f8 ("DEPENDENCY: ac/llvm: fix sparse code handling")
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35206>
Pierre-Eric Pelloux-Prayer
4a84ebfcb1