Hi all.

I have implemented billboarding in my engine and now i want to test it by creating a small piece of land with grass billboards on it.
But this wasn't as easy as i thought.

As Usual i'll provide a picture:



Most of the texture used for this billboard is transparent.
When rendered, the transparent pixel Z coords are written to the zbuffer. so when an billboard is rendered behind this one, a whole corner is cut away by the alpha-ed part of another billboard.

Can i prevent alpha-ed pixels from being added to the zbuffer??
Or is there an other sollution? :?

Does anyone have better grass/tree billboard textures because this one sucks. A good tutorial might be even better.

Thanx in advance.