See how the two windows above look the same? That's the idea; they also look the same to the code that renders to them. Yet, the GUI systems are very different (Qt vs glfw in this case). Now that's a powerful abstraction!

• Provide a generic canvas API to render to.
• Provide an event loop for scheduling events and draws.
• Provide a simple but powerful event system with standardized event objects.
• Provide various canvas implementations:
  • One that is light and easily installed (glfw).
  • For various GUI libraries (e.g. qt and wx), so visuzalizations can be embedded in a GUI.
  • For specific platforms (e.g. Jupyter, browser).

The main use-case is rendering with wgpu, but rendercanvascan be used by anything that can render based on a window-id or by producing bitmap images.