Attempt to fix failing tests

The issue was related to the fact that we switched to
actor and mapper for the fixed point but in the actor
even though it determines that it is not opaque, it
turns the depth mask to be ON.

Change-Id: Ib21bdbd29fda7a52f222197e0361b488acd5ce8a
Added a note on the workaround as well

Change-Id: I5f78fc98dfbffda5d9f178e265a6f0d45bf2e36f
Merge topic 'fix_fixedpoint_testing' into master

4c15cbd8 Added a note on the workaround as well
a8c5e8b0 Attempt to fix failing tests