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Draft: lossless 5K60 path (4:4:4 10-bit, tile-DPCM on the GPU) — seeking guidance on integration - #201

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aalpgiray wants to merge 6 commits into

swellweb:maint-3.5from

aalpgiray:lossless-dpcm-proposal

Draft

Draft: lossless 5K60 path (4:4:4 10-bit, tile-DPCM on the GPU) — seeking guidance on integration#201
aalpgiray wants to merge 6 commits into
swellweb:maint-3.5from
aalpgiray:lossless-dpcm-proposal

Commits on Sep 16, 2026
- codec: add TBD2, a lossless tile-DPCM wire format, with its CPU reference
  
  aalpgiray
  and
  claude
  committed
  f939666
- codec: GPU encoder for TBD2, proven bit-exact against the CPU reference
  
  aalpgiray
  and
  claude
  committed
  2639ab4
- receiver: Metal presentation layer with the TBD2 GPU decoder
  
  aalpgiray
  and
  claude
  committed
  85750be
- receiver: accept TBD2 frames, and advertise the capability that gates them
  
  aalpgiray
  and
  claude
  committed
  ed9bc56
- sender: add the 5K DPCM preset and send lossless frames when the receiver can
  
  aalpgiray
  and
  claude
  committed
  e9ff940
- docs: how the 5K60 lossless path works, and what the measurements said
  
  aalpgiray
  and
  claude
  committed
  990f31c