Debug Mode

Iris provides a debug mode with several features to facilitate development of shaders. Debug mode can be enabled in two ways:

1. In the in-game Shader Selection screen (Options > Video Settings > Shader Packs, default keybind O) press Ctrl + D (Windows / Linux) or Cmd + D (macOS)
2. Set the enableDebugOptions field to true in Iris’s settings file (/config/iris.properties)

Debug mode’s features are as follows:

• Pretty printing: code generated by the Iris patcher is saved to /patched_shaders/
• Error window: when an error in a shader is encountered, the error is presented to a pop-up window in-game
• Parity: patched shader code more accurately represents the source code. As of right now, this only prevents the patcher from deleting unused functions