mozilla/pdf.js — pull request #2076 by kkujala (2012-09-04 17:59:28+00:00)
Title: Add initial TilingType support.

I'm still trying to figure out the real implementation. Any pointers would be helpful.

I've been reading PDF ref 4.6.2 and this http://partners.adobe.com/public/developer/en/ps/sdk/5112.Patterns.pdf.