Original author: b...@processing.org (June 07, 2010 00:27:42)

This bug automatically added from:
http://dev.processing.org/bugs/show_bug.cgi?id=176

Comment from fry, 2005-10-15 10:27

Objects with alpha (lines or shapes with an alpha fill or stroke, images
with alpha, all fonts) are displayed in OpenGL (and P3D, in fact) based on
their drawing order. This creates some annoying effects like making things
opaque if they're drawn out of order with objects above or beneath them.
This is simply how OpenGL works, but is something that we'd like to develop
a workaround for in the future. Currently, you should just try to draw
things back-to-front as best as possible.

Original issue: http://code.google.com/p/processing/issues/detail?id=51