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Continuing to send the last-rendered framebuffer to HWC on subsequent
frames allows the HWC to read partially-composed regions that haven't
changed, instead of re-composing from scratch.

Bug: 11573910
Change-Id: I8829877d2a06001f1e1b3f168cbba71c7b217b2d

We were already making sure the HWComposer class had the handle before
prepare, but it wasn't passing the handle along to HWC as intended.

Partial fix for bug: 11430248
Change-Id: I25f672c4fdfaa6a81fe0acb24d9ad05153ee17dc

If the virtual display surface is being consumed by the CPU, it can't
be allowed with HAL_PIXEL_FORMAT_IMPLEMENTATION_DEFINED since there is
no way for the CPU consumer to find out what format gralloc chose. So
for CPU-consumer surfaces, just use the BufferQueue's default format,
which can be set by the consumer.

A better but more invasive change would be to let the consumer require
a certain format (or set of formats?), and disallow the producer from
requesting a different format.

Bug: 11479817
Change-Id: I5b20ee6ac1146550e8799b806e14661d279670c0

This change fixes a bug that caused an extra frame of latency when enabling
vsync event callbacks in DispSync.  The bug was related to the logic that
prevents the two events from firing with very little time between them due to
updates to the vsync model.

Bug: 11479720
Change-Id: Ie7eaff9e92ffb7b7b6cb4d3d4402c96cbd29af7e

Bug: 11324229
Change-Id: Ibac1be182c336e7aa5ac098f08d18b3c188964b4

i) Emulate Flush for AOSP Fusion Sesnsors on newer HALs that support batching.
ii) Early return if there are no events for the current SensorEventConnection.

Bug: 11325707, 11376538

Change-Id: Idb856302463649a99d3d5d0c965bb06ba06b8e1d

Cherrypicked from master.

b/9464621

Change-Id: I54c0ed50a57ac870da91db8589a73a2c792dbd8d

related to b/8316155 - Implement HWComposer 1.3 w/ virtual display support
Change-Id: I2dc8d65a74174aa833cc491264f97f1f2df49307

When resampling is disabled, it's currently possible to consume
touches after the current frame time. This breaks some guarantees and
could cause unexpected behaviors.

Change-Id: I99908a2cac2df9f795dd4a07188b4451213cf3e4

When a BufferQueue producer disconnects and reconnects, we retain
the previously-queued buffers but empty the slots.  This allows
the number of queued buffers to grow without limit.  The low-memory
killer does not approve.

Bug 11069934

Change-Id: Ia2eaa954c7a3904b54209a3701dba01689e204d8

When this boardconfig is defined, even when all virtual display
composition is done by GLES, the HWC will be forced to copy from the
GLES framebuffer to the output buffer. On some hardware this allows
HWC to do format conversions that would otherwise have to be done by
the consumer, with worse power and/or performance.

Bug: 8316155
Change-Id: If980ecc589f138cef063eafa757f7f748196713e

When GLES isn't writing to the output buffer directly, request an
implementation-defined format with minimal usage flags, leaving the
format choice up to gralloc. On some hardware this allows HWC to do
format conversions during composition that would otherwise need to be
done (with worse power and/or performance) by the consumer.

Bug: 8316155
Change-Id: Iee6ee8404282036f9fd1833067cfe11dbadbf0bf

This change allows SurfaceFlinger to run at a different vsync phase offset from
that used by external listeners.

Bug: 11175503
Change-Id: I561c53a5659fa6dc1e3e4ae30340f3c1a6adceb4

This change adds a new thread for calling HWComposer's eventControl
asynchronously.  The DispSync-based vsync approach ends up enabling and
disabling HWComposer's vsync callbacks at arbitrary times, and some HWComposer
implementations do not have these calls optimized.

Bug: 11175503
Change-Id: I719be82bd200b391c61d40863b991c7b59acdfd6

SensorService is dead locking itself when flush is called on older devices which don't support batching. mConnectionLock is acquired twice.

Change-Id: I5c25585bfb2b396df4b05826a9cba1da7997a3ee

Bug: 11220224
Change-Id: I99d0a42e1a6bb0aaf89706f6d100e9ef2a5deaa4

Bug: 11220224
Change-Id: I4efe0b66ea8969bf0ec3c4fcb325d354c8a0c315

Change-Id: I75ec21900fdc3ea80b61ec12c851a0c5ce9c44e8

Change API from flush(handle) to flush(). Call flush on all active sensors in the given SensorEventConnection.

Change-Id: I4ef2bec80406c517903ab9782dc9eaf3fa8b7f36

SurfaceFlinger was rendering dark purple for secure content, which
showed up when we took a screen shot for the orientation change
animation.  Use black instead.

Bug 11157921

Change-Id: I3895e8168891d49dc5b84eed599bcd0a303bb70a

Since the latency was introduced to avoid egregious errors during
resampling, remove it when we aren't resampling.

Change-Id: Ia8e9a9afb1e16212fec81a8c9c661c598e1b0ebf