- Eyes render under a VK_EXT_fragment_density_map: full rate around each eye's forward direction,
2x2 then 4x4 pixel blocks towards the edges ([vr] foveation = off|low|medium|high, default off).
XR_FB_foveation cannot help here: the runtime's maps only shape passes drawing into its
swapchain, and the eyes reach it through a copy.
- aurora-main/patches/dawn/aurora_fdm.inc: Dawn enables the extension only on request and for
dynamic rendering, flags every render pipeline, and chains an immutable RG8 map into any pass
whose first color attachment is a view bound to one (ABI: include/aurora/dawn_fdm_abi.h).
- android/Build-QuestDawn.ps1 builds the pinned Dawn revision with those patches for arm64
(dawn-build CI flags, protobuf off) into a cached package; Build-Quest.ps1 links it
(-StockDawn opts out) and AuroraDawnProvider.cmake enables the ABI from its manifest.
- lib/gfx/foveation.hpp generates the maps (32 px per texel, densities 255/127/63); an eye is
foveated only when single_pass_eyes draws it in one render pass. Menus never are.
- Live level from the headset panel's VR tab and the launcher; the launch decides whether the
device has maps. debug.wiicompiled.foveation and debug.wiicompiled.fdm for A/B.
- Tests: Foveation cases in gx_fifo_tests, mkw_vr_config_tests. Docs: OPENXR.md, quest-port.md.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
- Added eye_pass_plan.hpp: an eye keeps drawing in the render pass it has open across the frame's
GX copies (only the mono render performs them), skips passes a later clear of the whole color and
depth erases, and splits only for a clear of color alone or depth alone.
- render_stereo_eye follows that plan; the cockpit fallback is drawn inside the last pass instead of
a render pass of its own that loaded the eye back.
- The stencil is now cleared where the eye actually starts, so a cockpit mask drawn in an erased pass
can no longer punch holes in the HUD.
- [vr] single_pass_eyes (default on, live from F10) and debug.wiicompiled.eye_passes 0/1 on the Quest
switch back to one render pass per recorded pass for A/B timing.
- Each new plan shape is logged once ("Eye replay plan: ...").
- Tests: EyePassPlan cases in gx_fifo_tests; stereo_multiplayer_smoke and stereo_frame_worker_smoke
pass on D3D12.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
A stereo packet can now carry an AuroraCockpit: tracked hands and, when the
vehicle's own wheel cannot be animated, a synthetic steering wheel or
handlebar, all in metres in the seated frame. Each eye draws it inside the
scene's pass just before the first virtual-screen draw, depth-tested with
the world's own depth mapping (captured from a full-view world draw), so
the kart and track occlude the hands and the 2D layer cannot hide them.
Hands use a runtime-provided hand mesh when one is supplied and a
procedural glove otherwise.
aurora_set_stereo_scene_anchor_scaled lets the sealed frame own its world
scale: each eye's head translation is rescaled from the packet's scale to
the frame's. A non-finite cockpit is dropped with one warning; the frame
still renders.
Ported from heurazy's mario-kart-wii-VR-port (GPL-3.0-or-later).
Brings in patchzyy/Wiicompiled main: os_sleep parked-thread fix (#195),
HTTPS Retro WFC payload (#198), macOS build guide (#177), and the
reverse-Z depth fix (#134).
Conflicts were in aurora-main/lib/gfx/common.cpp and lib/gx/shader.cpp,
both from #134, which lands squarely on the VR stereo replay path.
#134 makes UseReversedZ genuinely reversed: the near/far correction now
applies exactly once, inside effective_projection(), instead of being
applied there AND per-vertex in the shader (the double application had
been cancelling out, so "reversed" Z silently behaved like forward Z).
Three pieces of the VR path were built against that old behaviour and
would have broken silently, so they are adapted here:
- shader.cpp exact-screen-depth parked the virtual screen at -0.5*w
specifically so the shader's following negation would land it at
+0.5*w. With that negation gone it now writes +0.5*w directly; keeping
the minus sign would park the screen at NDC -0.5, outside the clip
volume, discarding every 2D/HUD draw.
- stereo_replay.hpp backend_ndc_depth_row re-applied the correction to
the projection it was handed. That projection is effective_projection()
output, which now already carries it, so the function is a pass-through
of the Z row and no longer depends on the reversed-Z setting; the dead
bool parameter is dropped. Re-applying it would invert the virtual
screen's depth ordering, so 2D layers meant to sit on top would lose
the depth test to the ones behind them.
- shader_info.cpp stages the host depth window for that exact-depth path.
It now uses the same reversed-Z remap as upstream's new SetViewport
code, since frag_depth is written directly and has to reproduce the
window the fixed viewport transform would have applied. Restricted
depth windows (how the game forces an element in front of everything)
are exactly the 2D draws the virtual screen carries.
The SetViewport resolution keeps upstream's remap but retains the
ordering/clamp guard our version had: for any ordered guest range the
result is identical to upstream, and it avoids handing WebGPU
minDepth > maxDepth for the swapped pair MKW is known to emit. The VR eye
replay reuses these recorded values, so the guard covers that path too.
Test updates:
- stereo_replay_test now asserts the composed Z row against the staged
projection's own Z row rather than against the helper's output, so it
actually catches a re-introduced double correction (verified: it fails
when the old negation is put back; the previous self-consistent form
passed).
- gx_fifo_test's clearDepthValue expectation followed #134's deliberate
clear_depth_value() inversion, expressed through UseReversedZ rather
than hardcoded. Upstream changed the behaviour without updating this
test, so it fails on upstream/main as-is.
Verified: aurora suite 247 passed with the same 2 failures that already
fail on the pre-merge branch (IndexedPaletteHistoryKeepsAbsoluteVertexSlots,
PacksOneUniformWhenBothHalvesNeedInitialValue - both pre-existing, unrelated
to depth); shader.cpp and common.cpp compile clean; translator suite 577
passed. Not yet validated on-device in VR.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
* Fix already downloaded toolchain re-use
the following mv command would move $work into $toolchain_dir if the $toolchain_dir folder already existed.
* resolve z-fighting
