chunkOffset

Danger

This uniform only works with the “core profile” in Minecraft 1.17 and newer. It is recommended to use the “compatibility profile” with Iris for better support.

uniform vec3 chunkOffset;

The chunk offset in model space for the currently rendering chunk of terrain. Used in combination with vaPosition to get the model space position as follows:

vec3 model_pos = vaPosition + chunkOffset;

The value of chunkOffset is all 0s when not rendering terrain, or when using the compatibility profile.