Minecraft 112 2 Shaders Better - Link
In 1.12.2, you aren't fighting the game's new lighting engine (which can be finicky). You are using in its most mature state. This gives you granular control over shadow resolution, hand-depth, and custom skyboxes that modern versions are still trying to stabilize via various "Iris" or "Sodium" forks.
Here’s a practical guide to getting in Minecraft Java Edition 1.12.2 , including installation, performance tips, and the best shader packs for that version. minecraft 112 2 shaders better
v1.22 (for 1.12.2)