Server Shader Gate & Enforcer

On connection, the SSGE client mod sends details of the player's current shader settings to the server plugin. The plugin checks those details against its own list. If they match what the server allows, the player joins; otherwise the connection is refused. The check covers whether a shader is switched on or off, which shader file is selected, the shader settings file, its size in bytes, the SHA-256 hash of the shader file, and whether the shader uses default settings.

Players need Iris and Fabric API on the client for the shader to load at all. Players must run the shader the server asks for, so the setup is enforced at login rather than left to the player. The configuration file, ssge mod.json, is generated automatically once a player connects to a server that depends on Iris settings, and it must be configured manually for the checks to work properly. The mod is released under All rights reserved, and it is not open source. Files exist for 1.21.6 – 1.21.10, and the latest Fabric build is 1.0-release for 1.21.10.