The none forest stuff does nothing for me, but HOT DAMN that is one hell of a well done forest! What kind of lighting are using? Most engines(dynamic lighting) would have that scene look like total shit but yours looks like sex!
Cryengine2 is a very dynamic engine in how it deals with alpha-mapped textures. Overdraw really hasn't become a concern at all in any of my scenes... even when there is tons and tons and tons of it. I guess CE2 must deal with it differently than other engines. Would explain why Cryengine2 is so capable with rendering so…
Those leaf and branch planes have a lot of transparent pixels. For a portfolio piece that's probably not a big deal. In a real game scenario the frame rate could drop way below 30. If you add complex shaders for characters and level assets, particles for explosions and guns, then any additional delays on CPU (physics, AI,…