The FPS readout only measured the host's own render rate, hiding capture stutter.
The Video panel now shows a "Pipeline rates" section:
- Tool render (host FPS / frametime, as before);
- hooked source: Game present (/s, from VideoShare.present_calls deltas), Hook
publish (/s, generation deltas), and capture->display latency avg/min/max ms;
- WGC source: WGC capture (/s) from a new WindowCapture frame-arrival counter
(game present + latency are n/a, since WGC frames aren't game-timestamped).
Latency uses a system-wide clock: protocol v11->v12 adds VideoShare.present_qpc,
stamped by the hook at publish (publish_video_frame); the host measures
now_qpc - present_qpc per newly published frame, windowed to min/avg/max each second.
Verified: present_hook_test (x64 + x86) now asserts present_qpc is stamped; full
build x64 + x86 clean; ctest x64 9/9, x86 3/3. The live rate/latency numbers need a
real game mirroring to read meaningfully; wiring validated.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Mirror the injected game's window into the host's borderless window so Steam
RPT streams a live copy of the game. No injection needed for video.
- capture/window_capture: WGC capture of a target HWND. Wraps our D3D11 device
as an IDirect3DDevice, creates a free-threaded frame pool + capture session,
hides the cursor and (best-effort) the capture border. Frames arrive on a WGC
thread and are handed to the render thread, which copies the newest into a
shader-resource texture and draws it -- keeping all D3D11 context use on one
thread. Handles window resize via frame-pool Recreate.
- capture/frame_renderer: fullscreen-triangle shader that blits the captured
texture letterboxed (aspect-preserved) into the window.
- capture_panel: "Mirror game window" toggle + lifecycle; target HWND comes
from the hook's reported game window.
- main: winrt apartment init; mirrored frame drawn as background, ImGui on top.
- CMake: link windowsapp + d3dcompiler.
Verified: builds clean; host starts (apartment init + shader compile succeed).
Visual capture quality/latency to be judged on a real game.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
