Improves the appearance of leaves while maintaining resourcepack and mod compatibility!
Being a Modder myself, I put mod support as the #1 priority. Seen in this image is Biomes O' Plenty on 1.21 with the Nostalgia shaderpack
Better Leaves in a custom Dark Oak forest, Shaderpack: Bliss, Falling Leaves mod
Shaderpack: AstraLex
Here: BetterEnd, Using the Canvas Shader Mod
Grow your crops on bushy trees!
Shaderpack: Bliss
Shaderpack: Complementary Unbound