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Thanks for your work.
> 1, 2D(SV), rendering happens on a SurfaceView, through a SW canvas in
> an individual rendering thread.
> 2, 2D(HW), rendering happens on a normal View inside a HW accelerated
> window, through a HW canvas in UI thread.
> 3, 2D(SW1), rendering happens on a normal View inside a None HW
> accelerated window, through a SW canvas in UI thread.
> 4, 2D(SW2), rendering happens on a normal View inside a HW accelerated
> window, but the View has a SW layer, through a SW canvas in UI thread.
These cases seem to be what WebKit in ICS behaves. It is great to quantify.
What is the typical usage of condition (4)?
> more information you can found on my blog: http://rogeryi.wordpress.com/
> and this slide (include two test results, one from a galaxy tab 10.1
> android 3.2, other one from a Nexus S android 4.0.3):
> also this one: http://www.slideshare.net/rogeryi/beyond-android-views-windowsurfacespecial-viewsand-more
Nice materials. Thanks again for sharing.