Shaders broken on M1

[Bexin3]

Describe the bug

So this isn't a ManyMC specific issue, however on 1.12.2 shaders on M1 are very broken and even on 1.18 there are weird artefacts, BSL shaders also have a broken font. On 1.12.2 shaders however sometimes lock game to very low fps and don't use full performance - 10 percent of the times I get 50fps, while 90 I get 4 fps and the MacBook doesn't get hot at all. Also looking through leaves blocks beyond don't render. Also seus v10 shaders work on normal MacBooks after a fix but not on M1

To reproduce

Steps to reproduce the behavior:

1. Install 1.12.22.
2. Install optifine
3. add shaders
4. look through leaves or launch multiple times

Screenshots

-BSL when its low fps + leaves issues

-SEUS v10 that would work on not M1

System configuration

• ManyMC version: 0.1.2
• Java version: [e.g. Azul JDK 8)]
• M1 Pro

[ViRb3]

Yep, thank apple's OpenGL implementation for this. There's nothing straightforward we can do, some people are working on a better OpenGL but that will take time. Feel free to ask on discord for more info on working shaders and OpenGL status.