On 10/28/14 1:46 PM, Robert O'Callahan wrote:
For example, suppose I have a regular document that's shorter than the whole window and I append some text to the bottom. The height of the <body> grows. Depending on the styles on the <body>, e.g. the value of 'border-radius' and certain 'background' values, you may or may not have to repaint the entire window; in common cases you don't have to, and in Gecko we found it very worthwhile to detect those cases. How would your overflow-based invalidation handle this case?
It wouldn't handle that case well, as it would repaint the whole window. That is a good example :)
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