On Pre-Evergreen hardware we have a flag
"Force Clamp X,Y policy to wrap for CubeMaps"
but it doesn't seem to affect how border clamping is done. With
bf3027 this is set to PIPE_TEX_WRAP_CLAMP_TO_EDGE for cube maps,
and results in the regression reported in #9028.
Forcing repeat mode fixes the issue.
Fixes: bf3027c391
mesa/st: Normalize wrap modes for seamless cubes
Related: https://gitlab.freedesktop.org/mesa/mesa/-/issues/9028
Signed-off-by: Gert Wollny <gert.wollny@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/23848>
(cherry picked from commit 91fa1970c9)