Renew the frame-schedule lease only while the display server is
producing real cadence callbacks. Release ownership after the cadence
stalls, and reacquire with an immediate reset when it resumes.
For non-JIT rendering, treat only a successful presentation as live
cadence.
Track cadence, interruption, and calibration wake reasons independently
across X11 and Wayland. Feed phase correction back only when a pure
cadence wake renders the exact frame that was queued at that wake.
Propagate EGL swap results through the display-server boundary. Reject
failed presentations and keep pending Wayland HDR descriptions inactive
until the preceding surface commit succeeds.
Bump KVMFR to version 28 and attach generation, epoch, and deadline
identities to cadence deliveries and their timing records.
Accept phase corrections only for the exact completed publication. Keep
VM and client clocks independent by exchanging relative phase errors.
Make submission, completion, and work-estimate accounting best effort
so scheduler state cannot delay GPU submission or frame publication.
Copy imported IVSHMEM frames into renderer-owned textures before
acknowledging their LGMP messages. Hold each lease until its copy fence
signals, and protect selected snapshots until rendering completes.
Track independent delivery lanes, drain acknowledgements on the frame
thread, and recover stale queue subscriptions after host timeouts.
Treat a failed desktop texture bind as an incomplete render so full target
restoration remains latched until a frame can actually be drawn.
Carry retired damage into the pending record when the drawable texture does
not contain it, closing the publication gap between texture slots and their
matching damage metadata.
Move splash transitions onto the render thread and derive opacity from
elapsed monotonic time. Pace active animation at a display-compatible
minimum of 60 Hz while allowing incoming frames to satisfy that demand.
Reset the splash cleanly across reconnects and latch state changes with
the full-frame restoration decision.
Only report the client queue lead when JIT rendering provides a valid
measurement. Clamp linear phase errors instead of wrapping them into the
opposite direction at half of a refresh period.
Timestamp OBS frames after the shared framebuffer becomes ready.
Always track Wayland surface outputs alongside fractional scaling and use
RandR modes for X11 cadence. Remove render-derived feedback so a
throttled client cannot teach the producer to remain throttled.
Release scheduling after nominal output timing remains unavailable.
Use the current wl_output mode for the requested producer cadence.
Presentation feedback can follow a slower VRR cadence, feeding that low
update rate back into the IDD. Select the fastest nominal mode when a
window spans multiple outputs.
Mark the active fade as requiring a fully restored render target.
This also covers guest-driven renders between animation ticks so they
cannot blend over stale splash content.
Fully invalidate the render target when the full-screen splash changes.
This restores the desktop before alpha blending and prevents stale fade
states from cycling between swapchain buffers when guest updates are
sparse.
Disable fast-math for the timing graph translation unit because its
bucket arrays use NaN values to break plot lines across empty intervals.
Keep fast-math enabled for remaining client sources while allowing
Clang's strict floating-point diagnostics to remain fatal.
Treat every completed swap as satisfying the interactive overlay
refresh requirement. Only force a JIT overlay render after the 60 Hz
deadline, and rearm the timer-based deadline after frame-driven swaps.
This prevents interactive overlays from adding redundant swaps when
incoming frames already keep the client at or above the required rate.
Unbind the streamed desktop pixel upload buffer before ImGui processes
CPU-backed font atlas updates.
This prevents atlas pointers from being interpreted as PBO offsets when
DMA is disabled, which caused newly requested glyphs to be missing.
Expand ImGui window damage to include its border and round both logical
window bounds and framebuffer-scaled bounds outward.
This prevents a one-pixel strip of stale desktop content when an
overlay window is resized at fractional positions or display scales.
Correlate received frames with the texture update actually consumed by
the renderer and retain damage until its token becomes renderable.
Split client latency into dispatch, import, queue, preparation, setup,
effects, desktop, composition, and swap stages in FRAME LATENCY.
Exclude diagnostic overlay work from composition and preserve client
wait time when producer timing is unavailable.
Publish joined samples through a bounded token queue, avoid sleeping
while producer timing is finalized, and correct Wayland photon units.
Use calibrated copy-queue timestamps to separate source and effect
waits from the actual framebuffer copy.
Exclude producer readiness waits from client import timing so the
same interval is not counted in both Copy and Import.
libdecor_decorate() already creates an xdg_surface and xdg_toplevel
internally for the frame. Calling xdg_surface_get_toplevel() again on
that same xdg_surface just to fetch the toplevel for icon handling
assigns the xdg_toplevel role to the underlying wl_surface a second
time, which is a protocol violation.
On GNOME Shell 50 (mutter) this is no longer tolerated: mutter
terminates the Wayland connection ("WL: error in client
communication"), and since libdecor_shellInit() waits for the initial
configure with a blocking, error-less libdecor_dispatch(-1) loop, the
client hangs forever with no window and no diagnostic output. This
made -DENABLE_LIBDECOR=ON (the default when libdecor-0 is present)
appear completely broken on current GNOME/Wayland.
Use libdecor_frame_get_xdg_toplevel() instead, which returns the
xdg_toplevel libdecor already owns, without requesting a second role
assignment.
Require libdecor-0 >= 0.1.1, which is available in Debian oldstable,
so the new accessor is guaranteed by the build dependency.
