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Glutin completely detached from `winit` in the `0.30` upgrade, concerning itself exclusively with OpenGL and WSI APIs around it and leaving any windowing system interop to the `raw-window-handle` crate specifically designed for this purpose. This untanglement massively cleans up and simplifies the `glutin` codebase, and expands on surfaceless rendering as well as drawing to simple views (textures) on the screen as is common on Android, without having control over the entire "window" and event loop. Some winit boilerplate is however still provided as part of the `glutin-winit` crate. Most of the `glutin`+`winit` flow in this `glupload` example is adopted from `glutin`'s example, following platform-specific initialization sequences that heavily clutter the code (only creating a window upfront on Windows, only forcing transparency on macOS, and trying various fallback attributes to create a context). At the same time `winit`'s `Event::Resumed` and `Event::Suspe...
