mtgodot-poc/audit/reports/platform-runtime-trace.md

Platform stubs reached by the 40250 port route

2026-09-24, macOS arm64, offline port.login_flow (login → select → game → movement, combat, shop, quest, safebox and audio module calls):

MT_PLATFORM_STUB_TRACE=1 ctest --test-dir build-port-gate/macos \
  -R '^port.login_flow$' --output-on-failure -V

The first-call trace reported 93 distinct stub signatures. PlatformStub.h now prints qualified signatures, so overloaded Render/Update calls can be routed to their owning class. This is a reachability sample, not a claim that the other platform TODOs are unreachable. The live server, other maps and optional UI have separate call paths.

Runtime group	Reached stubs to address first	Observable gap
World and sky	CSkyBox::Update/Render/RenderCloud, CScreenFilter::Set*, CLensFlare::Draw*, CSpeedTreeForest::CreateInstance/UpdateSystem/Render	Sky, weather, foliage and postprocessing do not follow the original path.
Culling and drawing	CCullingManager::Register/Update, Frustum::ViewVolumeTest, CScreen::BuildViewFrustum, CGraphicImageInstance::OnSetImagePointer	Visibility and remaining UI/render primitives still depend on default-return stubs.
Audio internals	NSound::LoadSoundInformationPiece, CSoundBase, CSoundManager2D/3D/Stream constructors	The new Godot command bridge plays common sounds, but the original Miles object model is not implemented.
Platform services	CFileLoaderThread::Fetch, CInputKeyboard::IsPressed, BuildProcessCRC, GetProcessCRCMagicCubePiece, CMSWindow::GetWindowHandle	Resource scheduling, input polling and the CRC path need focused verification.

CPythonApplication::SetGlobalCenterPosition appeared in the first trace and was implemented from the 40250 GlobalPositionToLocalPosition → GetHeight → SetCenterPosition sequence in this round. The other groups remain open in the platform queue; do not mark them verified from this smoke test.

2026-09-24 follow-up: CScreen::RenderBox2d and RenderGradationBar2d now emit Godot canvas commands with the source's edge and colour semantics. CSoundManager now forwards named music fade speed/limit, 3D loop counts and indexed volume; its SaveVolume/RestoreVolume sequence preserves the backup. These changes passed the macOS port gate, audio driver test and game render test. The sky, foliage, water, shadows, sphere-pack culling and IME gaps remain open.