i am a shader developer, and i used the GL4ES successfully created a simple shader that only change the world colour, it works fine in the 1.16.4 forge version, but when i switched to 1.12.2 version ...
When I attempt to load the High Vibrant shaders v1.281 using optifine loaded via forge, I experience a crash and am unable to use the shaders. I am using OptiFine 1.12.2 U F5 loaded via Forge #2847 ...