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Flipping that a bit: Learn basic shader stuff in shader toy or whatever first, then learn to put a quad behind it in GL. Expand from there into proper models. (Not saying you should go with that, just throwing it out there :)
I’m so torn on this. On the one hand, of course shaders are essential and ubiquitous. On the other hand, learning the fundamentals of transformations, rasterization, lighting models, etc. is already a lot of concepts for the beginner.
While I hesitate to teach a “toy” impl that’s further and further divorced from reality and practically, I’m very sensitive to overwhelming newcomers. I think shaders are separable, and I think fixed-function is still pedagogically useful, precisely because of what it abstracts.
Yep, agree with all of that… if only it was possible to used fixed function then just add a shader :) Dunno, ideally I’d like both approaches. Maybe fixed function first, then work back from a shader with ES2?
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