• Updated to 1.21.4
• Updated Included Shaders
• Updated Dynamic Uniforms
• Added Uniform Config
• Added PANORAMA and SCREEN_BACKGROUND Render Types
• Native Fabric and Quilt versions
• Added Spectator Shader Manager

For the latest information about how to use luminance, check out the guide.

You won't need the common jar unless you're making a multi-loader mod.