PulseStudio/VoxelEngine
PulseStudio/VoxelEngine
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VoxelEngine/doc/specs/outdated/region_voxels_chunk_spec_v1.md
MihailRis 184e9c6648 update region file format 2 to 3 (WIP)
2024-09-04 23:37:39 +03:00

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Voxels Chunk (version 1)

Voxel regions layer chunk structure.

Values are separated for extRLE8 compression efficiency.

File format BNF (RFC 5234):

chunk    = (65536*byte)    block indices (most significant bytes)
           (65536*byte)    block indices (least significant bytes)
           (65536*byte)    block states (most significant bytes)
           (65536*byte)    block states (least significant bytes)

byte     = %x00-FF         8 bit unsigned integer

65536 is number of voxels per chunk (16*256*16)

Block state

Block state is encoded in 16 bits:

  • 0-2 bits (3) - block rotation index
  • 3-5 bits (3) - segment block bits
  • 6-7 bits (2) - reserved
  • 8-15 bits (8) - user bits