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Remove DispSync default value/docs 

Moves DispSync phase offset default values and documentation to
frameworks/native/services/surfaceflinger/Android.mk.

Bug: 30801895
Change-Id: I44a4355b2d112561b94ccfc6e9c3365885c205ad
This commit is contained in:
Dan Stoza 2016-09-09 13:53:52 -07:00
parent 88a15e9889
commit ae5e550f81
1 changed files with 0 additions and 22 deletions
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22
target/board/generic/BoardConfig.mk
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@ -45,28 +45,6 @@ BUILD_EMULATOR_OPENGL := true
# the GLES renderer disables itself if host GL acceleration isn't available. # the GLES renderer disables itself if host GL acceleration isn't available.
USE_OPENGL_RENDERER := true USE_OPENGL_RENDERER := true
# Set the phase offset of the system's vsync event relative to the hardware
# vsync. The system's vsync event drives Choreographer and SurfaceFlinger's
# rendering. This value is the number of nanoseconds after the hardware vsync
# that the system vsync event will occur.
#
# This phase offset allows adjustment of the minimum latency from application
# wake-up (by Choregographer) time to the time at which the resulting window
# image is displayed. This value may be either positive (after the HW vsync)
# or negative (before the HW vsync). Setting it to 0 will result in a
# minimum latency of two vsync periods because the app and SurfaceFlinger
# will run just after the HW vsync. Setting it to a positive number will
# result in the minimum latency being:
#
# (2 * VSYNC_PERIOD - (vsyncPhaseOffsetNs % VSYNC_PERIOD))
#
# Note that reducing this latency makes it more likely for the applications
# to not have their window content image ready in time. When this happens
# the latency will end up being an additional vsync period, and animations
# will hiccup. Therefore, this latency should be tuned somewhat
# conservatively (or at least with awareness of the trade-off being made).
VSYNC_EVENT_PHASE_OFFSET_NS := 0
TARGET_USERIMAGES_USE_EXT4 := true TARGET_USERIMAGES_USE_EXT4 := true
BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1879048192 # 1.75 GB BOARD_SYSTEMIMAGE_PARTITION_SIZE := 1879048192 # 1.75 GB
BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800 BOARD_USERDATAIMAGE_PARTITION_SIZE := 576716800