This is the backport of 0c0b978938 "radeonsi: set NEVER as
the depth compare func if depth compare is disabled".
The function r600_tex_compare arguments are updated with the "const"
keyword.
This change fixes the test below which was broken after 0c6e56c391:
khr-gl4[5-6]/incomplete_texture_access/sampler: fail pass
Fixes: 0c6e56c391 ("mesa: (more) correctly handle incomplete depth textures")
Signed-off-by: Patrick Lerda <patrick9876@free.fr>
Acked-by: Vitaliy Triang3l Kuzmin <triang3l@yandex.ru>
Reviewed-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/35968>