Commit Graph
10 Commits
Author SHA1 Message Date
enricobuehlerandClaude Opus 4.8 c6caeca5bc feat(encode): RGB-direct (EFC) is now the DEFAULT on capable hosts — gated by a session cursor-blend hint
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B2 default-on (design/vulkan-rgb-direct-encode.md): wherever the probe
passes, Vulkan Video sessions now take the EFC RGB source by default —
direct import on aligned modes, padded-copy staging on unaligned ones
(1080p). PUNKTFUNK_VULKAN_RGB_DIRECT becomes the override: =0 disables,
=1 forces, unset = the default below.

The one session class that must NOT default on: cursor-as-metadata
captures (every non-gamescope compositor), where the CSC shader's blend
IS the visible pointer — the EFC cannot composite, and defaulting there
would silently drop the cursor from the stream. The hint rides the
existing plumbing:

- SessionPlan gains cursor_blend, resolved once where the compositor is
  known (gamescope embeds the pointer itself → false; kwin/mutter/
  wlroots/hyprland → true), and shows up in the logged plan line.
- open_video/open_video_backend thread it through (native pump: all
  three encoder-open sites read plan.cursor_blend; GameStream monitor
  capture: true — it negotiates metadata cursor; spike: false).
- VulkanVideoEncoder::open resolves: env override, else ON iff the
  session never hands us cursor bitmaps. The warn-once for a cursor on
  an RGB session (forced via =1) stays.

Verified on-hw box (Linux): pf-encode + punktfunk-host compile, clippy
clean, unit suite green. The GPU paths themselves are unchanged from the
smoke-validated 96e19986 — this commit only changes which sessions
select them by default.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 23:24:46 +02:00
enricobuehlerandClaude Opus 4.8 96e19986bc feat(encode): RGB-direct padded-copy — unaligned modes (1080p) get the EFC path safely
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Lifts 3aacec53's alignment gate into a mode select: an aligned mode keeps
the true zero-copy direct import; an unaligned one (1080p!) now blits the
visible frame into a per-slot ALIGNED BGRA staging image and duplicates
the edge rows/columns into the 64x16 padding — transfer-only regions in
one vkCmdCopyImage (1080p: visible + 8 row regions; width padding adds a
second self-copy pass in GENERAL), no compute shader. The encode reads
the staging image, never the capture buffer, so the EFC can never read
past a producer allocation (the field GPU hang). Still one ~8 MB copy vs
the CSC path's ~17 MB + dispatch + plane copies. Verdict line:
active(padded-copy). The staging import drops the video profile entirely
(TRANSFER_SRC only).

CPU-payload paths made honest on the way (they were the smoke baseline
AND the software-capture fallback):
- rgb mode: the staging upload is padded CPU-side (edge duplication) so
  the aligned encode-src is fully defined;
- CSC mode: the sampled image is now SOURCE-sized with a matching copy
  extent — the old aligned-size image + tightly-packed buffer sheared
  rows and left garbage rows at unaligned modes (black-bar artifacts;
  YMIN=16 in every smoke frame), which also masked as a 24 dB PSNR
  'regression' against the (correct) padded output.

On-glass (780M, host Mesa 26.0.4): all four smokes pass at 256x256
(direct) AND 250x250 (padded); padded-EFC frames decode perfectly
uniform (YMIN==YMAX) at the exact 709-narrow values (79/148/60 for the
first three fills); CSC-vs-padded PSNR 49.9 dB avg after the baseline
fix. clippy clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 20:38:55 +02:00
enricobuehlerandClaude Opus 4.8 3aacec53d8 fix(encode): RGB-direct must not engage on unaligned modes — the EFC reads past the capture buffer (GPU hang)
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Field report (commit 25624443, RDNA2/VCN3 host, 1080p): repeated VCN0 VM
protection faults from punktfunk-host, vcn_enc_0.0 ring timeouts, two ring
resets, then a failed reset escalating to a full MODE1 GPU reset with VRAM
loss. Root cause is B1's RGB-direct source: the session's coded extent is
64x16-aligned (1920x1088) but the captured dmabuf is only the real mode
size (1920x1080) — the VCN EFC reads the 8 padding rows past the end of
the buffer (8 x 7680 B = 61 KB, matching the faulting page span exactly).
The CSC shader absorbs alignment by clamping reads and duplicating edges;
RGB-direct has no such stage. Every prior validation surface happened to
be aligned (256x256 smoke, 1440p live box) — 1080p is the common mode
that is not. The stall watchdog's rebuild-and-refault loop then turned a
per-session fault into the GPU death spiral.

Two layers:
- Open-time gate: RGB-direct engages only when the real mode equals the
  aligned coded extent (720p/1440p/4K yes, 1080p no); otherwise the CSC
  path runs and the verdict line says why (unaligned-mode). The padded-
  copy variant that re-enables 1080p is design-doc B2 work.
- Submit-time check: an RGB-direct frame that does not cover the coded
  extent errors out (encoder-rebuild path) instead of importing an
  undersized source.

On-glass (780M, host Mesa 26.0.4): all four smokes pass aligned; at
PF_SMOKE_W/H=250 the gate refuses RGB-direct and the rgb smokes soft-skip.
clippy clean.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 20:23:29 +02:00
256244430b feat(encode): Vulkan Video B1 — RGB-direct encode source via VCN EFC (PUNKTFUNK_VULKAN_RGB_DIRECT=1)
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design/vulkan-rgb-direct-encode.md B1: when the probe passes AND
PUNKTFUNK_VULKAN_RGB_DIRECT=1 (default OFF until the B2 on-glass A/B),
the session opens with pictureFormat=B8G8R8A8 and the captured RGB frame
becomes the encode source — the VCN EFC front-end does the 709-narrow CSC
inline during encode. Deleted from the per-frame path: the compute CSC
dispatch, both NV12 plane copies, the semaphore hop and one queue submit
(dmabuf frames are ONE encode-queue submit; ~17 MB/frame of GPU traffic
gone). The DPB stays NV12; RFI/RC/quality-level machinery is untouched.

Shape:
- probe_rgb_direct now returns the chroma-siting bits to create the
  session with (midpoint preferred, else cosited-even per axis); the open
  verdict line gains "active" / "available(off; ...)" states.
- RgbProfileStack: the rgb-chained video profile rebuilt on the stack per
  profiled-image creation after open (profile identity is by value) —
  dmabuf imports become profiled VIDEO_ENCODE_SRC images (import cache
  unchanged), the CPU staging image likewise (concurrent encode+compute).
- record_submit_rgb: steps 2–4 twin (dmabuf: single submit; CPU: staging
  copy on the compute queue, semaphore-ordered); shared step-1/bookkeeping.
- begin_encode_cmd takes a SrcAcquire (CSC general / fresh-import FOREIGN
  QFOT / cached visibility-only / staging TRANSFER_DST) so both paths
  share the encode recording.
- RGB-direct frames skip the CSC per-slot resources entirely (make_frame
  split into csc/common halves); cursor bitmaps warn once (EFC cannot
  composite; gamescope — the flagship — embeds the cursor itself).

On-glass (780M RADV PHOENIX, host Mesa 26.0.4): all four smokes pass
(vulkan_smoke{,_av1,_rgb,_rgb_av1}); the EFC-encoded H265 stream decodes
clean and matches the CSC-encoded stream at 49.9 dB average PSNR (min
48.9) — within the design's ±1-code-value tolerance. (Raw-OBU ffmpeg
probing of the tiny AV1 dumps fails identically for BOTH paths —
pre-existing dump quirk, not a stream defect.) check+clippy+full unit
suite green.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 20:05:56 +02:00
d5a0f5012b fix(encode): RGB-direct probe — accept cosited-even chroma siting (what VCN EFC actually offers)
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On-glass B0 result from the 780M (RADV PHOENIX, host Mesa 26.0.4): the
probe returned no-709-narrow-midpoint because RADV advertises
xChromaOffsets = COSITED_EVEN only — the VCN EFC does canonical H.26x
left-cosited x-chroma, while the requirement was written to bit-match our
2x2-average (midpoint) shader. The delta is a half-pel chroma-x phase,
imperceptible and unsignalled in our bitstream; EFC's siting is arguably
the more correct one. Accept either siting bit per axis (model + range
stay exact: 709 narrow); B1 will pass the preferred available bit.

With this the 780M probes rgb_direct=available; both GPU smoke tests
(H265 + AV1) pass on that box against host Mesa 26.0.4 — the first
real-RADV validation of the poll fix, the quality-level control, and B0.
(Container mesa alone can't run the H265 smoke: Fedora ships RADV with
H264/H265 encode compiled out — AV1 only. Use the host ICD via
VK_ICD_FILENAMES on Atomic boxes.)

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 19:44:33 +02:00
enricobuehlerandClaude Opus 4.8 78dba293a8 feat(encode): Vulkan Video B0 — vendored VK_VALVE_video_encode_rgb_conversion + RGB-direct probe telemetry
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First phase of design/vulkan-rgb-direct-encode.md (punktfunk-planning): make
the captured BGRx dmabuf the direct encode source with the VCN EFC front-end
doing the 709-narrow CSC — deleting the per-frame compute CSC, both plane
copies, the semaphore hop and one queue submit.

B0 changes nothing about the encode path. It vendors the extension surface
(vk_valve_rgb.rs — ash 0.38 predates it; same rationale and style as the
vk_av1_encode module) and probes at open whether this host qualifies:
extension present (Mesa >= 26.0 + EFC hardware) → feature bit → conversion
caps cover the compute shader's exact math (709 / narrow / midpoint both
axes) → encode-src format set offers B8G8R8A8 with DRM-modifier tiling.
The verdict is one INFO line (rgb_direct=available | first missing
requirement) — the field telemetry that decides where B1 can default on.

Verified: cargo check + clippy clean + unit tests green (Linux box); the
probe short-circuits to no-ext on non-RADV drivers.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 19:29:22 +02:00
enricobuehlerandClaude Opus 4.8 cfdec2729d perf(encode): Vulkan Video — explicit VCN preset, persistent bitstream map, CSC split timing
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Field follow-up to 6dc195f9 (the AMD host whose H265 encode sits at ~5 ms):
the remaining time is the VCN ASIC preset, and we never chose one.

1. Explicit encode quality level. RADV only emits a VCN preset op when the
   app issues ENCODE_QUALITY_LEVEL — we never did, so every session ran the
   firmware's default preset. Install the resolved level on the first
   frame's RESET control (chained ahead of the CBR state, which satisfies
   the spec's quality-change-carries-rate-control rule) and bake the same
   level into the session-parameters object (the spec requires the match).
   Default 0 = the fastest tier the driver exposes (RADV: SPEED, except
   H265 on pre-RDNA4 which the driver pins to BALANCE); clamped to the
   profile's maxQualityLevels. PUNKTFUNK_VULKAN_QUALITY=0..3 overrides for
   quality-biased setups. Logged at open so field logs show the tier.

2. Persistent bitstream mapping. read_slot vkMapMemory/vkUnmapMemory'd the
   host-visible bitstream buffer every frame; map each ring slot once at
   build instead (coherent memory; vkFreeMemory implicitly unmaps).

3. PUNKTFUNK_PERF CSC split. GPU timestamps bracket the compute batch
   (import barriers + cursor prep + CSC dispatch + plane copies) and a
   sampled csc_us line logs every ~2 s — separating shader/copy time from
   the ASIC encode inside the pump's wait_us, the VAAPI submit-split
   analog for this backend. Off (and unrecorded) unless PUNKTFUNK_PERF.

Verified: cargo check + clippy + DPB/RPS unit tests green (Linux box).
The GPU smoke tests still need a RADV host (NVIDIA driver fails session
open on the build box, pre-existing).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 19:17:34 +02:00
6dc195f982 fix(encode): Vulkan Video poll() must block per the depth-1 pump contract
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The session pump's depth-1 loop (capture → submit → poll) treats a poll()
None as "the backend holds the frame internally, re-poll next tick" —
true only of the libav AMF/QSV wrappers, whose codecs genuinely hold ~2
frames. The Vulkan Video backend probed its slot fence with
get_fence_status instead, so the AU of every frame — finished on the
ASIC in ~5 ms — sat unharvested until the tick AFTER the next frame was
submitted: encode_us read as one full frame period (~17 ms at 60 Hz vs
VAAPI's ~5.3 ms on the same VCN, the AMD field report) and every frame
shipped a frame period late — one frame of avoidable glass-to-glass
latency on the path that exists to beat libav VAAPI.

Wait the oldest in-flight slot's fence in poll() instead, matching the
sync NVENC backend's blocking lock_bitstream and the documented
Capturer::pipeline_depth contract ("capture → submit → poll-blocks").
Bounded by ENCODE_FENCE_TIMEOUT_NS like enqueue()'s backpressure wait,
for the same reason: poll runs on the thread the stall recovery runs on,
so a wedged GPU must surface as an error, not park it. None now only
means "nothing submitted". Covers H265 and AV1 (shared poll).

Verified: cargo check + DPB/RPS unit tests green (home-worker-5); the
GPU smoke tests fail at session open on that box's NVIDIA driver
identically on unmodified origin/main — pre-existing, needs the RADV
box for on-glass.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-07-20 18:53:21 +02:00
d2daeacc60 fix(pyrowave): per-session raw-dmabuf zero-copy capture on the Linux NVIDIA host
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A PyroWave session on an NVIDIA-auto host was forced onto CPU-RGB capture
(session_plan flipped gpu=false): Mutter blits tiled->LINEAR, we mmap +
de-pad ~30 MB, the encoder re-uploads it - three full-frame CPU touches
per frame at 5120x1440 while an HEVC session on the same box rides the
tiled EGL/CUDA zero-copy. The dmabuf passthrough + Vulkan tiled import
were already validated (8dc5d672) but only reachable via the global
PUNKTFUNK_ENCODER=pyrowave lab policy.

ZeroCopyPolicy gains pyrowave_session (from OutputFormat.pyrowave, i.e.
the negotiated codec): the capturer skips the NVENC-only EGL->CUDA
importer, takes the raw-dmabuf passthrough, and advertises the wavelet
encoder's Vulkan-importable modifiers so Mutter+NVIDIA negotiates tiled
zero-copy. The forced-CPU flip in session_plan is gone.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-19 16:25:00 +02:00
enricobuehlerandClaude Opus 4.8 8402f1ed4d refactor(docs): use shared @unom/app-ui/footer component
The docs footer was a hand-maintained mirror of the marketing site's. Both now
render the same @unom/app-ui/footer component, so they stay in sync. The shared
view themes itself through @unom/style tokens (which the docs already map onto
their Fumadocs surfaces), and a resolveHref hook rebases root-relative links
onto the marketing-site origin. Footer types now come from the library too.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
2026-06-28 14:34:45 +00:00