Anyone have recommendations for resources for learning to write shaders?
But that is just vertex shaders for things like Shadertoys.
There is much more to computer graphics or GPGPU than this though, Im still learning about that myself X).
[1] https://www.youtube.com/watch?v=eKtsY7hYTPg [2]https://www.youtube.com/watch?v=kfM-yu0iQBk
My main approach to writing shaders is to look at existing programs (e.g. Blender) and see what techniques are in use. The Google Filament renderer documentation [0] is also really good when it comes to BDSF functions.
Some papers from Unreal Engine might also help, such as "Real Shading in Unreal Engine 4" [1]
[0] https://google.github.io/filament/Filament.md.html
[1] https://cdn2.unrealengine.com/Resources/files/2013SiggraphPr...
Programming the shaders themselves are pretty simple imo, they're just pure functions that return color data or triangle positions. The syntax might be a little different than you're used to depending on the shader language, but it should be easy enough to pick up in a day.
If you want to write compute shaders for computation, then it gets a lot more tricky and you need to spend some time learning about memory accesses, the underlying hardware, and profiling.
You need to visit http://thebookofshaders.com/