Originally Posted By: ventilator
stencil shadows?
but maybe they are still useful for very low poly iphone games?

To me, they seem to be the best approach for realtime shadows on the current hardware. I am still doing some research on them, but it looks as if the iPhone SDK provides some extensions to simplify their usage and make them more lightweight.
But I am still trying to understand, how to implement them in the best way possible and didn´t write any code yet wink. So I might change my opinion about them being lightweight and drop the idea to implement them.

Originally Posted By: painkiller
can this be done on A7?

Yes, you can find some code for it on my blog.

Lite-C Tut. 1 Lite-C Tut. 2 Lite-C Tut. 3 (en)
Shader Tutorial (ger)

http://www.slindev.com