camptocamp/ol3 — pull request #32 by tsauerwein (2014-11-12 15:32:10+00:00)
Title: Fix call to drawElements

The offset must be given in bytes.

See:
https://www.khronos.org/opengles/sdk/docs/man3/html/glDrawElements.xhtml
http://stackoverflow.com/a/10224200/119937