jeresig/processing-js — pull request #13 by greggman (2013-02-21 02:05:39+00:00)
Title: Fix WebGL Performance issue

In WebGL you should always try to enable attribute 0 because
when attribute 0 is not enabled WebGL implementations are
forced to emulate it.

See http://stackoverflow.com/questions/14976011/performance-warning-processing-js
and http://www.khronos.org/webgl/wiki/WebGL_and_OpenGL_Differences#Vertex_Attribute_0