Hi guys. I am trying to get into work geometry shader in XNA. But i cant find any tutorials about geom. shaders in XNA. Do you know some? There is next problem. If i send to output "GraphicsDevice.GraphicsDeviceCapabilities.VertexShaderVersion.ToString();" it says "3.0". But i am runing Vista, directX 10 and have graphic card with shader model 4 support (NVIDIA 9600). How is this posible? :-). I really dont get it... So. Is there any support of geometry shader (or shader model 4.0 at all) in XNA? And if it is. Do you know any (ANY please :-)) xna-geom shader tutors?. I will appreciate any help.

The XNA Framework is built on top of Direct3D 9, therefore geometry shaders are not possible. If you want to use SM4.0, you'll have to use native Direct3D or something like SlimDX (which is a fantastic managed wrapper over DirectX).