Gaussian blur is "easy", you can decompose it into a vertical and horizontal component and parallelize and vectorize most of the task.
But that's a special case. If you have to actually fill the buffer the traditional way, it takes an eternity.
Which is why I'm so disappointed by Gtk's decision to say "just draw at 6K at 2x if you want 4K at 1.5x, scaling is cheap". Because it's definitely not.
But that's a special case. If you have to actually fill the buffer the traditional way, it takes an eternity.
Which is why I'm so disappointed by Gtk's decision to say "just draw at 6K at 2x if you want 4K at 1.5x, scaling is cheap". Because it's definitely not.