Renderer refactor

[Arcnor]

Pull Request Type

• GitHub Workflow changes
• Documentation or Wiki changes
• Build and Dependency changes
• Runtime changes
  • Render changes
  • Audio changes
  • Input changes
  • Network changes
  • Other changes

Description

This is the first of a number of PRs that refactor the renderer to make it easier to port to different APIs. This first chunk of work simply moves all that's not OpenGL specific to a base file.

If we want to allow multiple renderers & dynamic change between them this will need a bigger change to actually use classes (or any other mechanism) for easier overriding of behavior. That said, even without that a proper way of overriding will be needed for renderers that actually need to change the behavior of those base functions I just moved.

Each commit on this PR should compile on its own and should present no changes when ran.

Related Issues

Screenshots (if applicable)

Checklist

• I have tested my changes locally and verified that they work as intended.
• I have documented any new or modified functionality.
• I have reviewed the changes to ensure they do not introduce any unnecessary complexity or duplicate code.
• I understand that by submitting this pull request, I am agreeing to license my contributions under the project's license.

Additional Comments

[Lgt2x]

There is much more work to do for the renderer to be better organized but that's a good first step! Don't hesitate to create a tracking issue to share your full vision and progress ;)