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

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

Shader DevTools

Compatibility

Supported Loaders

Game Versions

Shader DevTools

Features

Shader Debug Logging

Shader DevTools

Features

Shader Debug Logging