[webkit-dev] Is Nix/GTK/EFL really using applyPageScaleFactorInCompositor?

Benjamin Poulain benjamin at webkit.org
Thu Sep 12 21:59:18 PDT 2013

Hi WebKit,

There are remains of applyPageScaleFactorInCompositor here and there in 
the code and it is not clear to me if it is correct or not.

The hack was introduced specifically for chromium 
(https://bugs.webkit.org/show_bug.cgi?id=107424) and most of the code 
has already been cleaned.
I could only find one place where that setting is set: 
WebPage::setUseFixedLayout() with USE(COORDINATED_GRAPHICS). This was 
added here: https://bugs.webkit.org/show_bug.cgi?id=105978

It is really this settings is related to fixedLayout.
The code of applyDeviceScaleFactorInCompositor creates subtle 
differences in the scale of layers. It would be good if someone who 
works on coordinated graphics could check if this behavior is intended.


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