Remove the need to post a runnable to coalesce them (we still coalesce
theme changes because those do non-trivial work).
What can go on is that on cold load we load the font list async, and
that goes through this code via a faked font.internaluseonly.changed
pref change, which stores a reframe change hint in
mChangeHintForPrefChange.
If the page flushes after this code runs, but before the next refresh
driver tick, we will be just wasting work. So instead do the
RebuildAllStyleData call synchronously. It just schedules a flush and
posts a hint, so it doesn't do the work right there, but makes the next
flush do the work as needed, so it should be faster and also more
correct.
Also improve handling of preference sheet prefs and such to avoid more
wasted work when we go through this code, as the assumption their
handling was doing was that it gets called infrequently, but it's not
the case due to the font list updates.
Differential Revision: https://phabricator.services.mozilla.com/D123103
To look up/instantiate platform fonts based on CSS font properties, we create a gfxFontGroup from an nsFont and other attributes; this is currently cached in an nsFontCache attached to the nsDeviceContext.
However, this assumes that the mapping to platform fonts will be the same for all documents using the given device context. In a world where visibility of platform fonts to the page may be restricted, and may depend on the individual document (e.g. if the user disables tracking protection for a particular site), the mapping represented by nsFontCache may vary, and determining how to resolve a given font request will need access to the requesting document in order to know what visibility it is allowed.
To support this, this patch moves the nsFontCache from nsDeviceContext to nsPresContext. In itself, this should cause no visible change in behavior, but it provides a basis for the patches that will follow in bug 1715501.
It's likely that this will have some effects on individual performance tests, depending on the exact content and sequencing of page loads, because of changed caching behavior. E.g. having a per-presContext cache may sometimes mean that we no longer take advantage of a cached gfxFontGroup that a previously-loaded page created; but on the other hand the caches will tend to be smaller and have faster lookups.
My testing so far suggests that we will see some apparent regressions, alongside some improvements, but that overall there should be little change. I'd like to get this change landed separately, before any of the actual font-visibility behavior changes, so that we can more clearly see and isolate any unexpected effects.
Differential Revision: https://phabricator.services.mozilla.com/D122715
The subdocuments _do_ use it. Without fission, we don't have dynamic
visible area changes, but with the incoming patches we will.
Differential Revision: https://phabricator.services.mozilla.com/D116923
By resolving the relevant promises, instead of crashing (and if we
didn't crash we'd leave the window registered as a refresh driver
observer, which would be bad).
I wanted to reject them, since that's what we do when the page has no
pres shell, but that'd make this test fail:
https://searchfox.org/mozilla-central/rev/d8194cbbeaec11962ed67f83aea9984bf38f7c63/dom/base/test/browser_promiseDocumentFlushed.js#165-186
For this, we modify the OneShotPostRefreshObserver API to be more
generic (and rename it OneShotManagedRefreshObserver).
We fix APZ's usage of this API, which was doing something extremely
weird (returning a refcounted object in a UniquePtr). This seems like an
artifact from recent OneShotPostRefreshObserver cleanup.
Differential Revision: https://phabricator.services.mozilla.com/D111851
There's no reason we can't just query LookAndFeel and we need to use
sSystemMetrics. In the past, LookAndFeel queries were not cached, but
this is no longer the case, so perf wise should be pretty equivalent.
Note that we don't need the NS_SUCCEEDED checks because the default
value from GetInt if the platform doesn't support it is 0 anyways.
Differential Revision: https://phabricator.services.mozilla.com/D110805
When a contentful paint occurs which doesn't come from Tick, we should
not generate a first-contentful-paint entry for it because
1) It violates the spec
2) It usually means some magical paints which we should not expose
to the web.
So this patches stop generating a contentful paint entry for that,
instead asking the next tick to generate the entry.
Depends on D107858
Differential Revision: https://phabricator.services.mozilla.com/D107859
This patch doesn't change behavior; it's just switching us between two
functions that do the same thing. (One is literally a trivial wrapper for the
other.)
We're using the new "InProcess" version of this API as a way of annotating
callsites that have been vetted as behaving properly in out-of-process iframes.
This callsite in nsPresContext.cpp is for some invalidation logic that we only
need to perform when the outer and inner document are part of the same display
list (i.e. part of the same process), as discussed in the adjacent
code-comment. It behaves just fine (doing nothing) if GetCrossDocParentFrame()
fails due to being in an out-of-process iframe.
Differential Revision: https://phabricator.services.mozilla.com/D109145
We keep mMedium in nsPresContext rather than just looking it up in the
browsing context because that's used quite more frequently.
Differential Revision: https://phabricator.services.mozilla.com/D103782
Otherwise on Android, we always use the toolbar height set by applications even
if the pref was set (Note that GeckoView Test Runner doesn't have the dynamic
toolbar thus the height is always 0).
Differential Revision: https://phabricator.services.mozilla.com/D103611
Note that there's still a little plugin related code in
widget/ and gfx/ etc after this. That can be removed
once we remove plugin support from dom/ etc.
The removal from layout/ should be pretty complete though.
Differential Revision: https://phabricator.services.mozilla.com/D102140
OneShotPostRefreshObserver works as the caller registers it, and
let it deletes itself via the DidRefresh method. The issue is that
DidRefresh is not guaranteed to run, and it'll leak PresShell
if it doesn't run.
This patch allows nsPresContext to store and release the last
registered OneShotPostRefreshObserver, and converted the existing
usage of OneShotPostRefreshObserver to use that. So instead of asking
OneShotPostRefreshObserver to delete itself, we now ask nsPresContext
to release it.
Differential Revision: https://phabricator.services.mozilla.com/D99939
This adds a new LookAndFeel implementation, RemoteLookAndFeel, which can
be used in content processes and is supplied with all of its values by the
parent process.
Co-authored-by: Cameron McCormack <cam@mcc.id.au>
Differential Revision: https://phabricator.services.mozilla.com/D97977
To allow `requestAnimationFrame()` and similar things to run at monitor
speed if there is only a window-specific vsyncsource available.
This is the case for Wayland and, in the future, EGL/X11. Other backends
may opt for window specific vsyncsources as well at some point.
The idea is to, instead of using global vsync objects, expose a vsyncsource
from nsWindow and use it for refresh drivers. For the content process, move
VsyncChild to BrowserChild, so for each Browserchild there is only one
VsyncChild to which all refresh drivers connect.
IPC in managed either by PBrowser or PBackground. Right now, PBrowser is
only used on Wayland, as both PBrowser and the Wayland vsyncsource run
on the main thread. Other backends keep using the background thread for
now.
While at it, make it so that we constantly update the refresh rate. This
is necessary for Wayland, but also on other platforms variable refresh rates
are increasingly common. Do that by transimitting the vsync rate `SendNotify()`.
How to test:
- run the Wayland backend
- enable `widget.wayland_vsync.enabled`
- optionally: disable `privacy.reduceTimerPrecision`
- run `vsynctester.com` or `testufo.com`
Expected results:
Instead of fixed 60Hz, things should update at monitor refresh rate -
e.g. 144Hz
Original patch by Kenny Levinsen.
Depends on D98254
Differential Revision: https://phabricator.services.mozilla.com/D93173
To allow `requestAnimationFrame()` and similar things to run at monitor
speed if there is only a window-specific vsyncsource available.
This is the case for Wayland and, in the future, EGL/X11. Other backends
may opt for window specific vsyncsources as well at some point.
The idea is to, instead of using global vsync objects, expose a vsyncsource
from nsWindow and use it for refresh drivers. For the content process, move
VsyncChild to BrowserChild, so for each Browserchild there is only one
VsyncChild to which all refresh drivers connect.
IPC in managed either by PBrowser or PBackground. Right now, PBrowser is
only used on Wayland, as both PBrowser and the Wayland vsyncsource run
on the main thread. Other backends keep using the background thread for
now.
While at it, make it so that we constantly update the refresh rate. This
is necessary for Wayland, but also on other platforms variable refresh rates
are increasingly common. Do that by transimitting the vsync rate `SendNotify()`.
How to test:
- run the Wayland backend
- enable `widget.wayland_vsync.enabled`
- optionally: disable `privacy.reduceTimerPrecision`
- run `vsynctester.com` or `testufo.com`
Expected results:
Instead of fixed 60Hz, things should update at monitor refresh rate -
e.g. 144Hz
Original patch by Kenny Levinsen.
Differential Revision: https://phabricator.services.mozilla.com/D93173
To allow `requestAnimationFrame()` and similar things to run at monitor
speed if there is only a window-specific vsyncsource available.
This is the case for Wayland and, in the future, EGL/X11. Other backends
may opt for window specific vsyncsources as well at some point.
The idea is to, instead of using global vsync objects, expose a vsyncsource
from nsWindow and use it for refresh drivers. For the content process, move
VsyncChild to BrowserChild, so for each Browserchild there is only one
VsyncChild to which all refresh drivers connect.
IPC in managed either by PBrowser or PBackground. Right now, PBrowser is
only used on Wayland, as both PBrowser and the Wayland vsyncsource run
on the main thread. Other backends keep using the background thread for
now.
While at it, make it so that we constantly update the refresh rate. This
is necessary for Wayland, but also on other platforms variable refresh rates
are increasingly common. Do that by transimitting the vsync rate `SendNotify()`.
How to test:
- run the Wayland backend
- enable `widget.wayland_vsync.enabled`
- optionally: disable `privacy.reduceTimerPrecision`
- run `vsynctester.com` or `testufo.com`
Expected results:
Instead of fixed 60Hz, things should update at monitor refresh rate -
e.g. 144Hz
Original patch by Kenny Levinsen.
Differential Revision: https://phabricator.services.mozilla.com/D93173
To allow `requestAnimationFrame()` and similar things to run at monitor
speed if there is only a window-specific vsyncsource available.
This is the case for Wayland and, in the future, EGL/X11. Other backends
may opt for window specific vsyncsources as well at some point.
The idea is to, instead of using global vsync objects, expose a vsyncsource
from nsWindow and use it for refresh drivers. For the content process, move
VsyncChild to BrowserChild, so for each Browserchild there is only one
VsyncChild to which all refresh drivers connect.
IPC in managed either by PBrowser or PBackground. Right now, PBrowser is
only used on Wayland, as both PBrowser and the Wayland vsyncsource run
on the main thread. Other backends keep using the background thread for
now.
While at it, make it so that we constantly update the refresh rate. This
is necessary for Wayland, but also on other platforms variable refresh rates
are increasingly common. When using PVsync, limit updates to once in every
250ms in order to minimize overhead while still updating fast.
How to test:
- run the Wayland backend
- enable `widget.wayland_vsync.enabled`
- optionally: disable `privacy.reduceTimerPrecision`
- run `vsynctester.com` or `testufo.com`
Expected results:
Instead of fixed 60Hz, things should update at monitor refresh rate -
e.g. 144Hz
Original patch by Kenny Levinsen.
Differential Revision: https://phabricator.services.mozilla.com/D93173
To allow `requestAnimationFrame()` and similar things to run at monitor
speed if there is only a window-specific vsyncsource available.
This is the case for Wayland and, in the future, EGL/X11. Other backends
may opt for window specific vsyncsources as well at some point.
The idea is to, instead of using global vsync objects, expose a vsyncsource
from nsWindow and use it for refresh drivers. For the content process, move
VsyncChild to BrowserChild, so for each Browserchild there is only one
VsyncChild to which all refresh drivers connect.
IPC in managed either by PBrowser or PBackground. Right now, PBrowser is
only used on Wayland, as both PBrowser and the Wayland vsyncsource run
on the main thread. Other backends keep using the background thread for
now.
While at it, make it so that we constantly update the refresh rate. This
is necessary for Wayland, but also on other platforms variable refresh rates
are increasingly common. When using PVsync, limit updates to once in every
250ms in order to minimize overhead while still updating fast.
How to test:
- run the Wayland backend
- enable `widget.wayland_vsync.enabled`
- optionally: disable `privacy.reduceTimerPrecision`
- run `vsynctester.com` or `testufo.com`
Expected results:
Instead of fixed 60Hz, things should update at monitor refresh rate -
e.g. 144Hz
Original patch by Kenny Levinsen.
Differential Revision: https://phabricator.services.mozilla.com/D93173
To allow `requestAnimationFrame()` and similar things to run at monitor
speed if there is only a window-specific vsyncsource available.
This is the case for Wayland and, in the future, EGL/X11. Other backends
may opt for window specific vsyncsources as well at some point.
The idea is to, instead of using global vsync objects, expose a vsyncsource
from nsWindow and use it for refresh drivers. For the content process, move
VsyncChild to BrowserChild, so for each Browserchild there is only one
VsyncChild to which all refresh drivers connect.
IPC in managed either by PBrowser or PBackground. Right now, PBrowser is
only used on Wayland, as both PBrowser and the Wayland vsyncsource run
on the main thread. Other backends keep using the background thread for
now.
While at it, make it so that we constantly update the refresh rate. This
is necessary for Wayland, but also on other platforms variable refresh rates
are increasingly common. When using PVsync, limit updates to once in every
250ms in order to minimize overhead while still updating fast.
How to test:
- run the Wayland backend
- enable `widget.wayland_vsync.enabled`
- optionally: disable `privacy.reduceTimerPrecision`
- run `vsynctester.com` or `testufo.com`
Expected results:
Instead of fixed 60Hz, things should update at monitor refresh rate -
e.g. 144Hz
Original patch by Kenny Levinsen.
Differential Revision: https://phabricator.services.mozilla.com/D93173
