Not fully using Oculus SDK

Created by: dfelinto

We are barely using the wrapper as we could. I'm not saying we should use FBO and the other remaining tricks, but we could at least use ovrMatrix4f_Projection instead of calculating it ourselves.

Sample code: fov = ovrFovPort(53.6, 58.9, 50.3, 58.7) matrix = ovrMatrix4f_Projection(fov, camera.near, camera.far, True).toList()

Reference:

• https://developer.oculus.com/documentation/pcsdk/latest/concepts/dg-render-advanced/
• https://codelab.wordpress.com/2014/09/07/oculusvr-sdk-and-simple-oculus-rift-dk2-opengl-test-program/