Bug swiftshader:104

Change-Id: I9fcea0c76875de735c3bad0a5c587875d0ca4e26
Reviewed-on: https://swiftshader-review.googlesource.com/18089Reviewed-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Lingfeng Yang <lfy@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>