Fixed a function comment.

The commit on Nov3 has already been accepted i think, and the Nov7 commits can be ignored, as I couldn't get MSAA to work, so I reverted the changes. Today I made 1 commit (fixed up some incorrect commenting). I assume that the next step for me would be to make a pull request. If you prefer pull requests containing batches of commits, just let me know. Or if there is something else I should do, let me know.