Custom water with normals, fog and (optionally) reflections
Basic color grading (saturation, exposure, etc)
Fully adjustable light colors
Compatibility
At the moment only versios 1.17 and up (including 1.21.1) are being tested. Earlier versions may or may not work.
Modern Nvidia, AMD and Intel gpus are supported on both Windows and Linux. Macs may or may not work.
Please use the latest Iris version (any version that supports custom uniforms should work). Optifine has some small bugs, but it should also mostly work.