Shader DevTools

Shader DevTools

Client-side fabric mod for working on Minecraft core shaders, post shaders, post effects, and render pipelines without restarting the game or reloading the resource pack.

https://github.com/seailz/shader-devtools

Features

- Reload shaders, both core and post, on demand without having to fully reload the resource pack - Live editing of shader files in-game with syntax highlighting - When a shader exists in multiple packs (including vanilla), ability to edit each of those individually (except vanilla shaders, which are read-only) and force load them - Ability to quickly visualize what a shader is rendering - Parsing of post effect JSON files, and the ability to edit these too - Parsing and visualization of all render pipelines - Ability to override any value in the `Globals` uniform buffer

Shader Debug Logging

You can add calls like `dbg("time=" + GameTime);` to supported shader programs and the value will be written to `logs/latest.log`.

Notes: - Works on both OpenGL and Vulkan - ASCII string literals are supported - Top-level string concatenation is supported, so `"abc" + someValue` works - Common scalar and vector values are converted to text automatically

Warning: - `dbg(...)` is still expensive in hot shaders, especially fragment shaders - Frequently changing values such as `GameTime` can reduce FPS if logged aggressively