OpenCL doesn't support recursion. CUDA does, but only from a certain version. Initial search indicated RenderScript does support recursion, but I couldn't find anything explicit.
Does RenderScript support recursive function calls?
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Yes it does. However, using this will limit a script to processors capable of recursion.
R. Jason Sams
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so what happens when you run this script on such devices? will it just use only the CPU ? – android developer Mar 11 '14 at 21:00
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The script will run, but be limited to the processors which support the features the script uses. So in the case where you use recursion, then run on a device with a GPU that does not support it, it will run on the CPU. – R. Jason Sams Mar 12 '14 at 03:34
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yes, so on unsupported GPUs, it will run on the CPU instead. – android developer Mar 12 '14 at 07:50