Instead of the WebRenderLayerScrollData code knowing about all the
different display item types, it makes more sense to move this logic
into the display items.
In addition to avoiding dis-encapsulating the data from nsDisplayItem subclasses,
this makes it easier to handle two specific scenarios:
(1) the case where an nsDisplayItem A subclasses another nsDisplayItem B, but A
and B have different types returned by GetType(). Previously A and B would have
to be handled explicitly in the WebRenderLayerScrollData switch statements,
which doesn't scale well if new types are added. With the new approach the
virtual function is shared down from A to B and so takes care of it. This is
particularly relevant for types like nsDisplayOwnLayer which have a number of
subclasses.
(2) the case where a display item *might* have APZ-relevant information.
In this case the type of the item alone is not sufficient to determine
if we need to create a new WebRenderLayerScrollData for it. Instead, we
need to access specific state inside the display item. This is now
handled by the UpdateScrollData function returning true when passed
nullptr arguments, and replaces the switch statement in
WebRenderLayerManager that updated forceNewLayerData.
MozReview-Commit-ID: FlfHlgSccSn
This adds handling for nsDisplayRemote frames, so that we create a
WebRenderLayerScrollData item for each nsDisplayRemote frame that we
encounter. This is the equivalent of a "ref layer" in a normal layer
tree, and allows the APZ side to glue together the scroll data from
different processes into a full tree.
MozReview-Commit-ID: 3lgsqtCKQya
This allows us to turn on layers-free mode in the firefox UI process,
and have it work better in that the content process' content actually
shows up.
MozReview-Commit-ID: qBnfueYmuf
Currently, we only correctly support remote layer trees for frameloaders that
use the same layer manager as their document. Since we need to be able to host
remote <browser> content in popup widgets for remote WebExtensions, we need to
tie the frameloaders to the layer manager of their host element, rather than
the root layer manager for the document.
MozReview-Commit-ID: 4RCsamFBiQw
Currently, we only correctly support remote layer trees for frameloaders that
use the same layer manager as their document. Since we need to be able to host
remote <browser> content in popup widgets for remote WebExtensions, we need to
tie the frameloaders to the layer manager of their host element, rather than
the root layer manager for the document.
MozReview-Commit-ID: 4RCsamFBiQw
The goal of this patch is to remove the call to the sync IPC
GetCompositorOptions message from TabChild::InitRenderingState. In order
to this, we have InitRenderingState take the CompositorOptions as an
argument instead, and propagate that backwards through the call sites.
Eventually we can propagate it back to a set of already-sync IPC
messages in PCompositorBridge that are used during layers id
registration (NotifyChildCreated, NotifyChildRecreated, etc.). Therefore
this patch effectively piggybacks the CompositorOptions sync IPC onto
these pre-existing sync IPC messages.
The one exception is when we propagate it back to the AdoptChild call.
If this message were sync we could just use it like the others and have
it return a CompositorOptions. However, it is async, so instead we add
another call to GetCompositorOptions here temporarily. This will be
removed in the next patch.
MozReview-Commit-ID: AtdYOuXmHu4
There are scenarios where we have a TabParent in the UI process hooked up to
a PuppetWidget with a BasicLayerManager. Webextensions fall into this category.
In this scenario, the parent-side layer manager is not hooked up to
the compositor (that is, there is no entry in the CompositorBridge layer tree
state map for the layers id). However, the content-side still ends up creating
a ClientLayerManager or a WebRenderLayerManager, which expects the layers id to
be registered in the compositor. This results in brokenness (in the case of the
ClientLayerManager/PLayerTransaction) or crashes (in the case of WebRenderLayerManager/
PWebRenderBridge). Instead, this patch changes this scenario to have the content
process use a BasicLayerManager which seems safer.
MozReview-Commit-ID: 3f80aZrRrmD
Instead we can use the otherwise-unused function to check if initialization worked.
Technically, because of the way RenderFrame construction works, whether or not
initialization succeeds is exactly dependent on whether or not the frameloader is
non-null, so we could even just use that to check success. But this feels slightly
more readable/cleaner.
MozReview-Commit-ID: CGiIAA1h6V7
There is already a GetLayersId function in RenderFrameParent.h that does the
exact same thing, and this private function is only used in one spot. Seems
unnecessary.
MozReview-Commit-ID: 6i7lwKQsSFM
We will use the new type for the generated IPDL message handler
prototype to make sure correct error handling method is called.
MozReview-Commit-ID: AzVbApxFGZ0
The bulk of this commit was generated with a script, executed at the top
level of a typical source code checkout. The only non-machine-generated
part was modifying MFBT's moz.build to reflect the new naming.
CLOSED TREE makes big refactorings like this a piece of cake.
# The main substitution.
find . -name '*.cpp' -o -name '*.cc' -o -name '*.h' -o -name '*.mm' -o -name '*.idl'| \
xargs perl -p -i -e '
s/nsRefPtr\.h/RefPtr\.h/g; # handle includes
s/nsRefPtr ?</RefPtr</g; # handle declarations and variables
'
# Handle a special friend declaration in gfx/layers/AtomicRefCountedWithFinalize.h.
perl -p -i -e 's/::nsRefPtr;/::RefPtr;/' gfx/layers/AtomicRefCountedWithFinalize.h
# Handle nsRefPtr.h itself, a couple places that define constructors
# from nsRefPtr, and code generators specially. We do this here, rather
# than indiscriminantly s/nsRefPtr/RefPtr/, because that would rename
# things like nsRefPtrHashtable.
perl -p -i -e 's/nsRefPtr/RefPtr/g' \
mfbt/nsRefPtr.h \
xpcom/glue/nsCOMPtr.h \
xpcom/base/OwningNonNull.h \
ipc/ipdl/ipdl/lower.py \
ipc/ipdl/ipdl/builtin.py \
dom/bindings/Codegen.py \
python/lldbutils/lldbutils/utils.py
# In our indiscriminate substitution above, we renamed
# nsRefPtrGetterAddRefs, the class behind getter_AddRefs. Fix that up.
find . -name '*.cpp' -o -name '*.h' -o -name '*.idl' | \
xargs perl -p -i -e 's/nsRefPtrGetterAddRefs/RefPtrGetterAddRefs/g'
if [ -d .git ]; then
git mv mfbt/nsRefPtr.h mfbt/RefPtr.h
else
hg mv mfbt/nsRefPtr.h mfbt/RefPtr.h
fi
The bulk of this commit was generated by running:
run-clang-tidy.py \
-checks='-*,llvm-namespace-comment' \
-header-filter=^/.../mozilla-central/.* \
-fix
For frame statistics to work properly, we have to notify an ImageContainer
when it has been composited. This requires a few changes, which have
been lumped together in this patch:
-- Create PImageContainer and ImageContainerParent/ImageContainerChild.
-- Add mFrameID and mProducerID everywhere we're passing around images.
-- Route composition notifications from the compositor back to
ImageContainerChild.
The ScrollingBehavior passed around extensively in TabParent/TabChild is
entirely redundant now that the layers.async-pan-zoom.enabled pref definitively
controls whether or not APZ is enabled. All the code related to ScrollingBehavior
can be removed.
