Context

This engine is intended to be used as a drop-in replacement to Three.js’s WebGLRenderer.

Problem

It tends not to work as a drop-in replacement out-of-the-box, because the renderer crashes when:

• Meshes contain a THREE.Geometry instead of a THREE.BufferGeometry.
• It uses materials for which the texture images are not loaded yet.

This might cause people who try to repl

Please check the author's explanation on how NeRF works in his speech in CVPR2020 tutorial:
https://www.youtube.com/watch?v=OEUHalxanuc
His part starts at 3:58:28

The implementation should allow

• easy to use coordinate transforms
• fast
• handle index transforms too