vertexMidMesh

vec4 clrwl_vertexMidMesh;

Sent to fragment: NO
Remaps: at_midBlock

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The xyz components store the world space offset from the vertex’s position to the center of the mesh in a 1/64th block unit.
The w component stores the light emission for block entities (range from 0 to 15). Entities and effects have a value of 0.

This is a best effort attempt to reproduce Iris’ at_midBlock.