This allows to control the type of data inside the create infos for
easy variation of the same shader.
Also this wraps the last global shader resource usage for the future
SRD.
Pull Request: https://projects.blender.org/blender/blender/pulls/144769
This works by wrapping the entry point call inside a
`main` function.
Since resources are still defined in global space,
function accessing these are marked with a custom
attribute. This custom attribute expands in a
`#ifdef` guard for the matching stage.
This is a temporary solution and will eventually
be lifted once we support SRD.
### TODO
- [ ] Implement `[[gpu::vertex/fragment_function]]`.
Pull Request: https://projects.blender.org/blender/blender/pulls/139233
