This returns the raw framebuffer GLuint and lets the caller bind it.
Initially I wanted to return a RefPtr<MozFramebuffer>, but then I discovered
that MozFramebuffer is not a refcounted class and prefers UniquePtrs.
Depends on D44324
Differential Revision: https://phabricator.services.mozilla.com/D44325
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extra : moz-landing-system : lando
This uses MacIOSurface internally. NextSurfaceAsDrawTarget locks the MacIOSurface,
and NotifySurfaceReady unlocks it if necessary.
Depends on D44321
Differential Revision: https://phabricator.services.mozilla.com/D44322
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extra : moz-landing-system : lando
The comments above these methods refer to NextSurface* methods which will be
added in later patches.
Differential Revision: https://phabricator.services.mozilla.com/D44321
--HG--
extra : moz-landing-system : lando
NativeLayerRoot and NativeLayer allow building up a flat layer "tree" of sibling
layers. They're created and manipulated with a synchronous-looking API, but any
changes will only be applied to the underlying native layers when ApplyChanges()
is called. This ensures that the modifications can be limited to run within a
CoreAnimation transaction, and on a thread of the caller's choosing.
In the near future I'm planning to have LayerManagerComposite create these
layers. That's the reason for the pseudo-abstracted cross-platform C++ API:
LayerManagerComposite can create and place the layers, and any painting into the
layer surfaces will happen in the compositor implementations with platform-specific
code.
For now, the CoreAnimation implementation is the only implementation. I think
the current API will let us use the same infrastructure for DirectComposite
layers on Windows, but we'll likely need to make some API modifications once we
attempt that.
The classes are threadsafe; their methods can be called on any thread and the
caller is responsible for sufficient synchronization. In reality, there are only
two threads that would have a reason to use these layers: The compositor thread
and the main thread. The main thread creates and destroys the NativeLayerRootCA,
and sometimes it calls ApplyChanges, e.g. during window resizes. It also calls
SetBackingScale. All other methods are usually only called on the compositor
thread.
Differential Revision: https://phabricator.services.mozilla.com/D26407
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extra : moz-landing-system : lando
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