Hello Sam!

You have reverted back my patches for OpenGL renderer :)

To reproduce an issue, compare graphics output while running these tests:

testdraw2 --renderer opengl --blend mask --cyclealpha
and
testdraw2 --renderer software --blend mask --cyclealpha

You will see, that software renderer output is different from opengl renderer output.

Thanks!

--HG--
extra : convert_revision : svn%3Ac70aab31-4412-0410-b14c-859654838e24/trunk%404199