Commit b6969106a9 for ffmpeg

commit b6969106a999f031297753450e91d5def6e18c7d
Author: Niklas Haas <git@haasn.dev>
Date:   Thu Oct 8 13:08:13 2026 +0200

    swscale/ops: assume read ops forward untouched extra lanes

    Currently, these end up as unset; but we should pass them through
    in case there are multiple read ops in a row.

    Signed-off-by: Niklas Haas <git@haasn.dev>

diff --git a/libswscale/ops.c b/libswscale/ops.c
index c24e0d2bed..7c16b8a4b2 100644
--- a/libswscale/ops.c
+++ b/libswscale/ops.c
@@ -432,6 +432,10 @@ void ff_sws_op_list_update_comps(SwsOpList *ops)
                     dst->flags |= SWS_COMP_COPY;
                 }
             }
+
+            /* Forward unused/untouched components */
+            for (int i = op->rw.elems; i < 4; i++)
+                FORWARD(i, i, flags);
             break;
         case SWS_OP_SWAP_BYTES:
             for (int i = 0; i < 4; i++) {