Alpha Test

[Marco Bubke <marco@xxxxxxxx>]

Hi

I want to implement apha test from OpenGL because I want the totally
transparent pixel to go away before depth test. I don't sure how to implement it
best. The first way I have seen was to define new TransparencyTypes. The other
is to define new Nodes. Maybe I should do both. But I'm not sure which elments
should be changed to store the values or should I write some new one?

thanks in advance

marco