Comment 1 for bug 1301115

Found the cause. It seems "not touching the logic" but changing how it is called was optimistic...

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revno: 1517 [merge]
author: Kevin DuBois <email address hidden>
committer: Tarmac
branch nick: development-branch
timestamp: Tue 2014-04-01 10:57:18 +0000
message:
  compositor:
  transition occlusion detection from operating as a filter/operator on mc::Scene to simply operating on the renderable list generated by the scene. The detection algorithm remains the same (note: I did not touch the logic on the occlusion detection, just changed from an operator to a function).

  Approved by PS Jenkins bot, Daniel van Vugt, Alan Griffiths.
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