NetPad is a C# playground that lets you run C# code instantly, without the hassle of creating and managing projects. Open NetPad, start coding, hit Run, and see your output immediately. It's that ...
To change the shader, create a texture pack with a file called menu-shader.fsh. For a few already made shaders, check out this Twitter X thread. This mod also supports some Shadertoy shaders, to use ...