Programming a GPU on bare metal

I virtually attended Handmade Seattle 2024, where Mason Remaley presented "It's Not About the API" (link eventually), which discussed Vulkan. There was a question about how the buffer data layouts work on the GPU, and the speaker didn't have a clear answer. I don't want to come across as criticizing Mason by saying this; rather, I'm saying this kind of low-level information on GPUs is hard to come…