[HDK] OpenCL examples?

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Hi, two questions for you all today:

Does anyone know of any simple examples of how to use OpenCL in the HDK?

Does anyone know if it is possible to access a VDB grid from within an OpenCL kernel?
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Small bump before shooting off an email to SideFX
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I don't think that there is an HDK example for OpenCL, but you can check out the CE (compute engine) headers in $HFS/toolkit/include/CE. They seem fairly well commented.
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Ah nice, lots more than in the docs. I will start there. Thanks!
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