pan/mdg: Replicate 16-bit swizzles

We don't support vec8 quite yet anyway, this fixes dot products.

Signed-off-by: Alyssa Rosenzweig <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4793>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/panfrost/midgard/midgard_emit.c b/src/panfrost/midgard/midgard_emit.c
index 6f6a395b430..98844169fae 100644
--- a/src/panfrost/midgard/midgard_emit.c
+++ b/src/panfrost/midgard/midgard_emit.c
@@ -242,6 +242,12 @@ mir_pack_swizzle_alu(midgard_instruction *ins)
                         }
 
                         src[i].rep_high = upper;
+
+                        /* Replicate for now.. should really pick a side for
+                         * dot products */
+
+                        if (ins->alu.reg_mode == midgard_reg_mode_16)
+                                src[i].rep_low = true;
                 }
 
                 src[i].swizzle = packed;