fdd8d85f89
This simplifies the GBuffer packing code in a lot of common use cases. This improves compilation speed. The trivial case is either a single closure (already handled) or 2 closures with no second data layer. We detect if reflection and refractions can be assumed colorless depending on the nodetree config. Colorless reflection or refraction are only using one data layer. Pull Request: https://projects.blender.org/blender/blender/pulls/146455