Shader Toy
https://www.shadertoy.com/
https://www.shadertoy.com/view/4s23zz
つぶやきGLSL
https://twitter.com/search?q=%23つぶやきGLSL&src=hashtag_click
https://twitter.com/zozuar/status/1639657028946673665
GLSL SANDBOX
https://glslsandbox.com/
https://glslsandbox.com/e#92195.1