The client now advertises VIDEO_CAP_10BIT|HDR and carries the result all
the way to glass:
- csc_rows is bit-depth exact (10-bit limited code points differ from
8-bit by ~half a code) and folds in the P010/X6 MSB-packing factor;
new 10-bit white/black tests.
- The CSC shader grows a params block: mode 0 passes the transfer
through (SDR as-is, or PQ onto an HDR10 swapchain); mode 1 tonemaps
PQ→SDR in-shader (ST.2084 EOTF, 203-nit reference white exposure,
BT.2020→709, soft maxRGB rolloff, sRGB encode) for desktops without
an HDR surface. PUNKTFUNK_TONEMAP_PEAK tunes the rolloff.
- The presenter probes VK_EXT_swapchain_colorspace + an HDR10/ST.2084
10-bit surface format and flips modes in-band with the stream's PQ
signaling: fence-quiesce, then CSC pass + video image (10-bit
A2B10G10R10 intermediate — PQ in 8 bits bands) + overlay pipe +
swapchain rebuild through the deferred-destroy rules.
- P010 decodes through all three paths: Vulkan Video (X6 multiplanar
pool, R10X6 plane views), VAAPI dmabuf (R16/RG1616 plane imports),
software (swscale as before).
- session pump advertises the caps; the host still gates Main10 behind
its PUNKTFUNK_10BIT policy.
Probed on glass hardware: the KDE/NVIDIA surface exposes
A2B10G10R10+HDR10_ST2084, so true PQ passthrough is available there.
Known v1 gaps: software-decode PQ shows untonemapped (8-bit RGBA
carries the transfer baked); the SDR overlay composites unscaled onto
an HDR10 surface (dim OSD); no vkSetHdrMetadataEXT yet.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The §6.1 presenter↔console-UI contract lands: pf-presenter exposes its
device (SharedDevice) and composites at most one premultiplied-alpha
quad per frame (new overlay.frag + LOAD render pass over the swapchain;
zero cost while the overlay returns None). pf-console-ui implements it
with skia-safe on the shared VkDevice: DirectContext via the ash
dispatch chain, a ring of two offscreen render targets (one-frame-in-
flight safe), damage-driven redraws — the OSD re-renders at 1 Hz, the
hint on capture toggles, nothing per-frame. Skia never touches the
swapchain. The session binary carries it behind the default ui feature:
4.9 MB stripped without, 10 MB with (measured).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
The decoder's NV12 dmabuf imports per-plane (R8 + GR88, explicit DRM
format modifier, dedicated dup'd-fd import, FOREIGN→graphics acquire)
and a fullscreen-triangle render pass converts it into the presenter's
video image with the CICP-driven coefficients ported from video_gl.rs
(same tests, plus a rows-vs-matrix agreement check). SPIR-V is committed
(shaders/build.sh regenerates) so builds and CI need no toolchain. The
import extension set is probed at device creation; unsupported boxes and
3-failure streaks demote the decoder to software via the existing
force_software contract. The session binary now honors the Settings
decoder preference instead of forcing software.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
enricobuehler