According to the new KitKat documentation, the new SurfaceFlinger supports 
additional features, as described below:
"
GLES2.0 SurfaceFlinger

Android 4.4 upgrades its SurfaceFlinger from OpenGL ES 1.0 to OpenGL ES 
2.0. This boosts performance by using multi-texturing, and it improves 
color calibration and supports more advanced special effects.
New Hardware Composer support for virtual displays
The latest version of Android Hardware Composer, HWComposer 1.3, supports 
hardware composition of one virtual display in addition to the primary, 
external (e.g. HDMI) display, and has improved OpenGL ES interoperability."

Does anyone know if any of these features (such as color calibration and 
special effects) are exposed in the SDK, and if so, how? I looked on the 
Android dev site myself but I didn't see specific changes related to this.

Thanks!

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