We are now passing all of dEQP-GLES3 mustpass tests.

Change-Id: I98a4e57c4cf90a3b193e220e75a97b9657c746e7
Reviewed-on: https://swiftshader-review.googlesource.com/16208Reviewed-by: Alexis Hétu <sugoi@google.com>
Tested-by: Nicolas Capens <nicolascapens@google.com>