A simple ASCII shader for Godot. Renders whatever the camera would render, but as ASCII art. Works in-game and in-editor.
Inspired by https://github.com/StefanJo3107/ASCII-Rendering-Shader-in-Unity.
Just add the AsciiRenderer node to the scene which should be rendered that way, and you're done! The character size can be changed in the shader parameters.
The coordinates are clamped to a grid (which will become the ASCII characters). The greyscale color value (the brightness) at these coordinates is used to decide whether a mostly empty character like . or a mostly full character like # should be used. The coordinates within the current grid cell serve as the UV coordinates in a texture containing ASCII characters, along with the offset from the previous step.