- Added missing TRACE macros
- Added some trivial verifications in a few more functions

Change-Id: I32762a5caf8ee086ee423ba39a077d3cf3ec543a
Reviewed-on: https://swiftshader-review.googlesource.com/2683Tested-by: Alexis Hétu <sugoi@google.com>
Reviewed-by: Nicolas Capens <capn@google.com>