Spec & environment

first: WHERE can I find the spec (2.1) ?

And then: How can I create an environment, do I have to create each tree or other plants (for example) as single object ?

And how can I check for collision (with the models/ground) ?

Plz help!!!

Are you blind? (no offence - this is actually a hint how to find specs) :wink:

You do as you please. You can design your program however you want. OpenGL doesn’t enforce you to do such things one or other way.

There are tutorials for such things all over the Internet. One such tutorial will help you much better than 3 pages of discussion on forum.