Bug swiftshader:11

Change-Id: I794ef54a7c2ecde71ee6344c63955d2f838ff189
Reviewed-on: https://swiftshader-review.googlesource.com/7331Tested-by: Nicolas Capens <capn@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>