Dumb question: Does this: "TensorFlow.js automatically supports WebGL, and will accelerate your code behind the scenes when a GPU is available." imply that yo

Dumb question: Does this: "TensorFlow.js automatically supports WebGL, and will accelerate your code behind the scenes when a GPU is available." imply that you can get all the benefits of GPU-accelerated machine learning on any old GPU---not just CUDA-compatible Nvidia GPUs? For example, if you've got one of those 15 inch Macbook pros with a GPU, can you use TensorFlow.js to train a model at comparable (even if not identical) speed to a custom deep learning box?