Renderscript now works on GPUs
Nexus 10 comes with the Mali T604 GPU and it is the first device to support Renderscript on the GPU. Previously, Renderscript only ran on CPUs. The documentation still remains sparse to non-existant though. For example, it is not clear which code can run on the GPU successfully and there are no performance guidelines either. There are no good code samples, no books and poor tutorials.
Nexus 10 does not appear to support OpenCL, which is VERY disappointing.