Bug swiftshader:104

Change-Id: I037fcb69131906b52e0c1919f36fea61b2e1c621
Reviewed-on: https://swiftshader-review.googlesource.com/19628Tested-by: Nicolas Capens <nicolascapens@google.com>
Reviewed-by: Alexis Hétu <sugoi@google.com>