- Rename lit.shader to defaultLit.shader,this one is the one written by
hand, others are generated by shader graph
- Rename littemplate to litcommon to be less confusing
- update all the scene because of renaming above
- pepare a directory with ShaderPass that are common code for a given
pass. (currently no vertex shader here)
- Add EnvTemplate to generate various combinaison of cube texarray and
simple cube for evaluteBSDF_env
- Rename class/file
- Introduce concept of FragInput