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eedb31a2aa
This makes APZ behave nicely with most uses of a css transform:scale.
Summary of changes:
- FrameMetrics::mCumulativeResolution now includes the css-driven resolution
in addition to the pres-shell resolution.
- Displayports are now stored in Screen pixels rather than Layer pixels.
This is what we want anyways (as we'd like the displayport size to remain
constant as a fraction of the screen size), but it was necessary to make
this change as part of this patch because continuing to store them in
Layer pixels in the presence of a css-driven resolution would have
required a bunch of infrastructure to implement correctly.
Remaining work:
- Layout painting a scrollable layer at a resolution different from the
scale induced by the css transform causes problems. These will go away
with bug 1076192.
- Different resolutions on the x and y axes are not supported. This is
tracked by bug 1039967.
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| angle | ||
| cairo | ||
| doc | ||
| gl | ||
| graphite2 | ||
| harfbuzz | ||
| ipc | ||
| layers | ||
| ots | ||
| qcms | ||
| skia | ||
| src | ||
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| thebes | ||
| ycbcr | ||
| moz.build | ||