2 Commits

Include renames

Author	SHA1	Message	Date
enricobuehlerandClaude Fable 5	143a707f76	fix(zerocopy): the mechanical sweep batch — truthful fence waits, forgiving env flags, no leaked planes ... From the pf-zerocopy review sweep (design/pf-zerocopy-sweep-handoff.md), the compile-verifiable batch: - dmabuf_fence: the blocking poll's result was discarded — EINTR silently skipped the wait (reopening the stale-frame race a SIGCHLD away) and a timeout reported as waited. Now EINTR retries with the remaining budget and the caller gets Signaled/TimedOut/NoFence, so the one diagnostic operators have about implicit fencing stops lying. (C2) - env flags: PUNKTFUNK_ZEROCOPY=TRUE meant *off* — values are case-folded now, and an unrecognised spelling falls back to the flag's default with a one-shot warning instead of silently inverting the operator's intent. (C3) - cuda: alloc_pitched_nv12 leaked the Y plane when the UV allocation failed (per-frame under VRAM pressure — the worst possible time to leak); a failed async-copy enqueue now drains the stream before returning, so a recycled pool buffer can't race an orphaned in-flight copy. (C4, C5) - worker: --fd is validated (>= 3, fstat + S_ISSOCK) before OwnedFd adoption — 'zerocopy-worker --fd -1' was constructing OwnedFd's niche value. (V1) - docs: all 15 rustdoc warnings fixed, including the link to the renamed note_raw_dmabuf_negotiation_failed. (D1) - CI: a SPIR-V drift gate — the committed .spv blobs are include_bytes!'d and rebuilt by hand; the gate diffs disassembly (filtering only the shaderc/glslang generator difference) so a forgotten rebuild fails CI instead of shipping the old kernel. Both blobs verified in sync. (S1) - tests: bt709_limited pinned to external BT.709 anchors (it is the sole oracle for the GPU colour self-test); blend_geometry gets its first tests — empty rect, CURSOR_MAX clamp, per-format group counts, and negative-ox floor alignment. (T2, T3) Verified on .25: clippy -D warnings clean, 27/27 tests, cargo doc 0 warnings. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-28 12:40:37 +02:00
enricobuehlerandClaude Fable 5	5e1e64e50b	perf(latency): T2.5b — NV12 compute CSC on the LINEAR/gamescope zero-copy path ... design/latency-reduction-2026-07.md T2.5's Linux half: the LINEAR dmabuf path (gamescope's only offer) fed NVENC RGB, paying its internal RGB->YUV CSC on the SM the game is saturating — the exact contention §5.A removed everywhere else. The Vulkan bridge now carries a buffer-to-buffer RGB->NV12 compute shader (rgb2nv12_buf.comp, BT.709 limited, coefficient-identical to pf-encode's rgb2yuv.comp; whole-word writes so no 8-bit-storage feature is needed): import dmabuf -> dispatch CSC into the exportable buffer -> CUDA de-strides both planes into a pooled two-plane NV12 buffer. PUNKTFUNK_NV12 (default-on) now covers LINEAR; a CSC failure latches RGB for the stream (mid-frame fallback, no dropped frame); 4:4:4 LINEAR sessions stay RGB (never silently subsample). New ImportKind::LinearNv12 rides the existing worker IPC (appended last per the wire-tag rule); cursor stays downstream (blend_nv12). Validated: .21 clippy -D warnings (pf-zerocopy/pf-capture/host+nvenc) + 17 zero-copy tests. Owed: on-glass gamescope session (visual + dmon sm% check). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>	2026-07-17 20:14:20 +02:00