Who can tell me the difference between setVertexBuffer() and setVertexBytes() ？
@008v -
setVertexBuffer() requires a MTLBuffer. You fill this buffer with data (such as vertices) and pass it to the vertex shader.
setVertexBytes() is a shortcut, which bypasses the step of having to put the data into a MTLBuffer. You can pass a struct directly to the vertex shader. There is a limit of 4k bytes, however. setVertexBytes() is a great way to pass small bits of data such as the uniforms, or a timer, for example.
Thank you very much. And I hope you could add the above to your book for the next version.