Reuse modelview in firefly render

[charagarlnad]

allocating a new FloatBuffer every frame is silly and generates significant garbage

[Glease]

I don't understand what this is doing. It gets the modelview matrix into a buffer, then overwrite the buffer with identity matrix, then write it back to modelview matrix? what's the point of that? why not just use glLoadIdentity? nevermind. overlooked the loop code and it actually only overwrites the top-left 3x3