vertexdata

What's the preferred vertex data format for OpenGL ES on iPhone OS?

In the book "Mobile 3D Graphics with OpenGL ES and M3G" the authors say that choosing the correct vertex data format will have huge impact on performance. They recommend GL_SHORT for most vertex data. Does this also apply for iPhone OS? ...

What is a good code structure for api-independant vertex processing?

Currently working on a 3D media engine using C# and I have come across a little conundrum. I have my rending loop figured out, I got a great plug-in architecture and content management system and even a material pipeline all planned out. Then engine is planned to use DirectX and OpenGL (via 'renderer' plug-ins), along with both APIs' pro...