[PD-dev] [GEM] CVS-changes

[chris clepper]

>and another two changes:
>
>1. [alpha]
>now you can set the blending-function
>0..GL_ONE_MINUS_SRC_ALPHA that's the (old) default
>1..GL_ONE (as would be enabled by the "blend" message to various objects.
>
>2. [polygon_smooth]
>enables polygon smoothing
>
>i think this is better than having to add the "blend" method to all Geos.
>So users can decide what they need. (and they need to know about it anyhow)
>
>i think [polygon_smooth] is a bad name. but which one would be better ?

i'll try this out later today.  the main reason i added the blending 
stuff to the geos was to get anti-aliasing.  those jagged objects 
were pretty ugly to look at!!  the side benefit is of course having 
alpha blending 'for free' on the gpu.

i have no suggestions for [polygon-smooth] right now, but then again 
i'm always having trouble naming these objects.  at least it 
describes what the object does.

cgc