I'm in the process of trying to learn the Metal API for the Macintosh. These are the example applications I'm constructing in order to illustrate parts of Metal in a step-by-step organized way.
Metal, for those who don't know, is a low-level API for performing GPU operations, such as real-time graphics or compute-bound tasks. Because Metal is a low-level API, it is very powerful and very fast--and very very complicated.
And while there are a few "introduction to Metal" documents and web sites out there, quite a few of them seem to fall short when going beyond the very basic steps of presenting a triangle or perhaps a teapot. Which is cool if you want to just do basic stuff. But can be a pain if you want to do something more complicated.
Thus these examples, and hopefully a PDF-based book which links to these examples (and to web sites discussing the different parts of Metal).
Because as they say, the best way to learn something is to try to teach it to someone else.
All of the example applications are checked into this GitHub repository as separate branches from Example 1 through to Example 11. The readme for each branch has been modified to show what each example does.
The Full Paper
The full paper documents the individual steps illustrated in each example, and will eventually contain nutshell descriptions of the Metal shader language and other elements of the Metal API. The paper can be found as a PDF at the Chaos In Motion Blog; look for "Learning the Metal API" for the latest.
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