5dd3f11d92
Completes the sparse op surface Pixal3D's decoders need. spatial2channel/channel2spatial are sparse space-to-depth and its inverse. The slot index is sum_i (coord[i] % f) * f**i - axis 0 FASTEST varying, the reverse of C order. decodes it the same way; using C order in one and this in the other would misplace every child while keeping all shapes valid. SparseResBlockC2S3d widens to out_channels*8 so channel2spatial can redistribute those channels across the 8 children, with a predicted subdiv mask deciding which children exist - so the occupied set grows selectively (32 voxels -> 122, not 256). Tests cover exact round-trip, zero-fill of unoccupied slots, and selective growth. |
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| .. | ||
| test_dit.py | ||
| test_ops.py | ||
| test_sparse.py | ||