Android 4.0 on the OMAP™ 4 platform
2
Architecture Overview (Selected Components)
OMAP
User Interface (UI) experience and
expected with Android 4.0. For a high
best user experience, it is important to keep the composition rate of the
UI
layers very close to the refresh r
many surfaces are involved in the composition. This eliminates any
noticeable lag in UI responsiveness
As mobile devices running Android are increasingly moving to support
displays with higher resolutions and
composition workload on the GPU is increasing as a result. At the same
time, more of the UI content generation has been moved from the MPU
to the GPU with Android 4.0 through the use of the OpenGL
benefit that can be achieved if some of the composition work is offloaded
acceleration capabilities needed to offload much of the compos
workload normally handled by the G
In
layers to the final display has changed significantly
the GPU for composition of UI layers ensures combined output including
3D objects and video, but using the GPU f
costly in both power and performance.
New Graphics and
Video Composition
Architecture
Android 4.0 on the OMAP™ 4 platform
1 -
Android 4.0 OMAP 4 Board Support Package (A4O4 BSP)
Architecture Overview (Selected Components)
mobile processors are
User Interface (UI) experience and
powerful
expected with Android 4.0. For a high
-
performance UI that provides the
best user experience, it is important to keep the composition rate of the
layers very close to the refresh r
ate of the display no matter how
many surfaces are involved in the composition. This eliminates any
noticeable lag in UI responsiveness
when used.
As mobile devices running Android are increasingly moving to support
displays with higher resolutions and
multiple simultaneous displays, the
composition workload on the GPU is increasing as a result. At the same
time, more of the UI content generation has been moved from the MPU
to the GPU with Android 4.0 through the use of the OpenGL
amming interfaces (APIs)
. All of this points to the
benefit that can be achieved if some of the composition work is offloaded
OMAP4
460 processor has the extended composition
acceleration capabilities needed to offload much of the compos
workload normally handled by the G
, the composition and rendering of graphics and video
layers to the final display has changed significantly
provided by the OMAP4460
the GPU for composition of UI layers ensures combined output including
3D objects and video, but using the GPU f
or all composition is often
costly in both power and performance.
Nov 2011
Android 4.0 OMAP 4 Board Support Package (A4O4 BSP)
provide the smooth
performance UI that provides the
best user experience, it is important to keep the composition rate of the
ate of the display no matter how
many surfaces are involved in the composition. This eliminates any
As mobile devices running Android are increasingly moving to support
multiple simultaneous displays, the
composition workload on the GPU is increasing as a result. At the same
time, more of the UI content generation has been moved from the MPU
to the GPU with Android 4.0 through the use of the OpenGL
® ES
. All of this points to the
benefit that can be achieved if some of the composition work is offloaded
460 processor has the extended composition
acceleration capabilities needed to offload much of the compos
ition
ideo display
, the composition and rendering of graphics and video
layers to the final display has changed significantly
to leverage hardware
. Using
the GPU for composition of UI layers ensures combined output including
or all composition is often