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Upstream sizes the raw quantized-payload worst-case buffer at aligned_width*aligned_height*2 bytes: real headroom for 4:2:0's 1.5 samples/px, but half of what 4:4:4's 3 samples/px can produce. Busy 4:4:4 content overruns the buffer on the GPU and corrupts the adjacent meta/bucket suballocations — nondeterministic corrupt bitstreams and encoder crashes at ANY target bitrate (smooth content never trips it, which is why 4:2:0 and simple 4:4:4 both look fine). Found by the Phase-0 measurement matrix for design/pyrowave-444-hdr.md; fix validated alone via upstream's own devel tools on the RTX 5070 Ti: deterministic byte-identical outputs across runs, 1080p + 4K, 8- and 16-bit, PSNR at the expected operating points. Patch lives in crates/pyrowave-sys/patches/ and vendor-pyrowave.sh now re-applies patches on re-vendor; PUNKTFUNK-VENDOR.txt records it. Upstream report to follow. No wire/ABI change; 4:2:0 sizing unchanged. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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894 B
Plaintext
18 lines
894 B
Plaintext
Vendored by scripts/vendor-pyrowave.sh — do not edit by hand.
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pyrowave: 509e4f887b585a3f97471fcc804e9de649f2c16f
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Granite: 44362775d36e0c4139352f83efd96bab4e239f66
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volk: 47cddf7ed97b94118a08aacb548a411188e016cc
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vulkan-headers: 015e25c3c91b70eb1a754d36fb14c4ba6ad9b0b9
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Tree is pruned to what the pyrowave-sys standalone build needs
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(see the rm -rf list in the script). All parts are MIT-licensed
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(pyrowave, Granite) or Apache-2.0/MIT (volk, Vulkan-Headers).
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Local patches (crates/pyrowave-sys/patches/, re-applied on re-vendor):
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0001-payload-data-444-sizing.patch — encoder payload_data worst-case buffer
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was sized for 4:2:0's 1.5 samples/px; busy 4:4:4 (3 samples/px) overran it
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on the GPU → nondeterministic corrupt bitstreams/crashes at any bitrate.
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Found + validated 2026-07-18 (RTX 5070 Ti, 1080p/4K, 8/16-bit); to be
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reported upstream.
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