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Shader Toy Tutorial

Graphics cards can run programs written in the C-like language GLSL. These programs can be easily parallelized and run across the processors of the graphics card GPU.

Shaders take a bit of set-up to write. The ShaderToy website has standardized some of these and made it easier to experiment with writing shaders. The website is at:

https://www.shadertoy.com/

Arcade includes additional code making it easier to run these ShaderToy shaders in an Arcade program. This short ShaderToy demo loads a GLSL file and displays it:

.. literalinclude:: shadertoy_demo.py
    :caption: Shader Toy Demo
    :linenos:

You can click on the caption below the example shaders here to see the source code for the shader.

Some other sample shaders:

Writing shaders is beyond the scope of this tutorial. Unfortunately, I haven't found one comprehensive tutorial on how to write a shader. There are several smaller tutorials out there that are good.

Here is one learn-by-example tutorial:

https://www.shadertoy.com/view/Md23DV

Here's a video tutorial that steps through how to do an explosion:

https://www.youtube.com/watch?v=xDxAnguEOn8