Comment by dragontamer

NVidia never even implemented OpenCL 2.0

AMD had a buggy version. Intel had no dGPIs so no one cared how well an iGPU ran OpenCL (be it 1.3 or 2.0)

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AMD was clearly pushing C++ AMP at the time with Microsoft. And IMO, it worked great!! Alas, no one uses it so that died.