voxelizeLightBlocks

voxelizeLightBlocks=<true|false>

Location: shaders.properties

Using voxelizeLightBlocks in shaders.properties, you can now voxelize light blocks in the shadow or main pass.

This only applies to light blocks (Minecraft Wiki), which are a specific block which is invisible but emits a specific level of light. This does not affect any other blocks or geometry.

Light blocks will be rendered as a single (degenerate) invisible quad with all points centered on the middle of the block. (at_midBlock will be 0.) The ID will correspond as normal to the light block, and UV will be 0. lmcoord.xy will both be the value of the light made by the light block.