* Add viewport info to PaintCallback * glow: be more explicit with more state * glow: Refactor VAO
* Improve glow error reporting * Add more check_for_gl_error calls * Remove clippy lint list from egui_glow lib.rs - Forgotten in https://github.com/emilk/egui/pull/1394 * egui_glow: move vao code to own file * Cleanup: `use glow::HasContext as _;` Co-authored-by: Zachary Kohnen <me@dusterthefirst.com>