Refactor rendering code

[philippotto]

• Shader
  • Extract main shader code into an own module (ideally, use something like glslify to further split the code)
  • Make the uniform listening more concise and robust
• Make bucket picker strategies responsible for deciding when they should be triggered
  • each strategy should listen to the attributes it depends on
  • the strategies could be triggered/controlled from within a saga(s)
• Clean up the render loop. At the moment, it's scattered through out plane_view/arbitrary_plane/arbitrary_view
  • only listen to the minimum of necessary store changes (e.g., for updating the matrix of a rendering plane)
  • try to get rid of backbone events
• clean up the responsibilities of the scene controller (skeleton and orthogonal mode aspects are mixed)
• ensure that there are no memory leaks when switching between modes (all listeners should be destroyed)

Log Time

[hotzenklotz]

Is this still relevant especially in light of recent changes to the rendering pipeline, WebGL2, ThreeJS update, shared rewrites, etc?

[philippotto]

The points are still relevant, unfortunately.