Hi! I have two objects to draw. The second is like water, it have to cross the first objects How can I set the object to be translucent? Should I use glBlendFunc and/or the alpha value for each point?

You can check NeHe´s exemple code about transparence:

www.demonews.com

Gandalf the White

Nehe''s page is offline...

enable blending, set the type of source and dest blending you need, and use alpha values for each vertice.

Remember that translucent objects must be rendered last, and from back to front.