[wwalker3]

It does look like mobile GPU vendors are about to start offering OpenCL support. For example, ARM submitted OpenCL 1.1 Full Profile conformance test results for the Mali-T604 last year (http://blogs.arm.com/multimedia/775-opencl-with-arm-mali-gpu...), and Imagination Technologies showed mobile OpenCL demos last year at CES (http://www.youtube.com/watch?v=sDrz-w1jzEU).

It's easy to see why OpenCL hasn't rolled out fully on mobile GPUs yet: writing and debugging a full OpenCL software stack is very expensive and time-consuming, and there's still not that much real programmer demand for OpenCL on mobile.

As for Renderscript, it's always sounded like a bit of "not invented here" syndrome Google's part -- we've already got CUDA and OpenCL, and RS doesn't really bring much new to the table. They've already deprecated the 3D graphics part of Renderscript in Android 4.1, so perhaps they'll do the same to Renderscript Compute soon.

[cageface]

I'd much rather see Google invest their time in an Android version of something like the Accelerate API from iOS. It would be a lot more generally useful.