Without that, even in a slow JavaScript implementation, you can barely see the white background.
As I explain in the article, this is entirely because of memory pressure limits of the 80s. This is what Windows 7 does too. And in a modern environment (compositing manager), windows do get their own backing pixel memory.
Comments
To see what?
Note that the window under it, with its white background, actually has a setTimeout when it repaints:
https://github.com/magcius/xplain/blob/gh-pages/src/article-...
Without that, even in a slow JavaScript implementation, you can barely see the white background.
As I explain in the article, this is entirely because of memory pressure limits of the 80s. This is what Windows 7 does too. And in a modern environment (compositing manager), windows do get their own backing pixel memory.