What common texture compression, if any, is available on the Android platform?

In simplest terms, I feel that these texture compression schemes should be available on all android devices, but I'm not sure about 2, and even then, I'm not so sure about 1.

1. compressed开发者_如何转开发 paletted texture
2. ETC1 (RGB 8 bit)

I can't seem to find the docs on this at developer.android.com. :(

If anyone just knows this info off the top of their head, I bet they'd be here at StackOverflow. :)

There is no common format, because of hardware variations. Supported texture formats depend upon the OEM.

Google I/O 2010 - Writing real-time games for Android redux, has a small section discussing texture compression.
At about 6:55 he talks about texture compression options.

• ATITC: Nexus One (Qualcomm), and most widely used atm
• PVRTC: Droid (PowerVR)
• ETC1: The emerging standard

Chris recommends ETC1, but also didn't compress his textures for the sample game.

ETC1 is API level 8+ (Android 2.2+) which is probably why its not being widely used at the moment. Just a matter of time...