both OneAPI and ROCm are, or should, or could provide higher level APIs to isolate you from OpenCL's C APIs, or just leverage SPIR-V. Other than CUDA, I failed

both OneAPI and ROCm are, or should, or could provide higher level APIs to isolate you from OpenCL's C APIs, or just leverage SPIR-V. Other than CUDA, I failed to see any other open alternatives to get heterogeneous computing working yet, OpenCL is the only one on the table as far as I can tell for now. Yes there are Vulkan compute shader etc but they're still pretty far behind, and they could be made OpenCL compatible too. While CUDA is great, OpenCL can be made by OneAPI and ROCm more open source friendly, I hope.