GPU or CPU?

[a-anjos]

I believe that, instead of:
"The idea of modern GL is that vertices are stored on the GPU and need to be uploaded to the GPU before rendering."
you might mean:
"The idea of modern GL is that vertices are stored on the CPU and need to be uploaded to the GPU before rendering."

[rougier]

I just merged your PR but I now realize that I think I meant GPU actually. Vertices are stored on the GPU and this means you have to upload some content to the GPU before rendering.

Maybe there is a better phrasing actually. Could make a new PR with a better sentence (this I think the current one is not totally clear)