Shaders have been coded in Visual Studio Code with the Shadertoy (GLSL Preview) extension.
Created with Fractal Box 2 which renders fractal_test1.glsl.
Created with circlefold.glsl.
Created with kleinian.glsl.
Created with Mandelbulb Path Traced which renders mandelbulb.glsl.
Created with Kleinian glow test which renders kleinian-glow.glsl.