Question about projection and view matrices

Thanks for all the hard work. Sorry for the issue. Not sure how to reach out devs otherwise.

Noticed that the model view and projection matrices are passed manually into the shader (vs using THREE built-in ones) because some values are set to `-1`

https://github.com/quadjr/aframe-gaussian-splatting/blob/main/index.js#L461

Why is this needed? 

Thanks