@quad >I don't think the open source drivers do compute for that card
The AMDGPU drivers aren't even "open source", while they're released under the MIT expat license, they do not operate without proprietary software in the form of loadable firmware running on the GPU.

mesa is free software and does implement opencl, although not completely - the opencl implementation works just fine with free software programs like waifu2x-convertor-cpp mind you.


Proprietary malware tends to require the newest versions of opencl and doesn't account for incomplete implementations pretty much.