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daniel-lynch--ovrplugin-ope…/shim/gen_stubs.sh
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Daniel LynchandClaude Opus 5 1f3dc40c07 docs+build: hygiene pass — close leak risk, de-drift docs, fix build prereqs
Repo hygiene round following a full review. No shim behaviour changes.

Leak risk:
- .gitignore: ignore CLAUDE.md (personal assistant-lane config, was one
  `git add -A` away from a public commit) and scratch_obj/.

Docs vs. reality:
- shim/README.md: rewritten. It described a pre-implementation skeleton with
  "core fns are TODO stubs returning -1005", three mutually inconsistent stub
  counts, and four completed milestones listed as open. Now carries the verified
  breakdown: 438/438 exports = 371 generated stubs + 46 core + 7 layers + 2
  Vulkan queries + 12 passthru trampolines.
- TESTING.md: dropped the self-contradicting "NOT yet" block (5 of 6 items were
  done or misstated, and contradicted the same file 45 lines above). Path B now
  points at tools/desktop-harness, which exists, instead of the orphaned
  shim/tests/harness.c. Path A prereqs marked as the record they are.
- HOST.md: corrected the runtime assumption. The OpenXR runtime inside Lepton is
  SteamVR (vendor/etc/openxr/1/active_runtime.json -> vrclient.so), not Monado.
  Favourable: SteamVR emulates Oculus Touch by default and advertises the
  XR_FB_foveation family, so the existing input and foveation paths should carry
  over. The old "remaining unknowns" are resolved by Lepton's published source
  and replaced with the items to check before a first Frame boot.
- README.md: same runtime correction.
- docs/research/RECON.md: the four passages prescribing an entitlement
  NOP/stub/bypass are corrected in place rather than merely disclaimed by the
  top banner, which they contradicted.

Build correctness:
- shim/build_android.sh: missing patchelf is now fatal. It warned and exited 0,
  producing a .so that cannot resolve the OpenXR loader at runtime.
- scripts/fetch_deps.sh + packaging/build_openxr_loader.sh: pin the OpenXR and
  Vulkan header versions (were tracking `main`), overridable via OPENXR_TAG /
  VULKAN_HEADERS_TAG; require cmake for the loader build.
- packaging/steamframe_patches.sh: use the apktool.jar that fetch_deps.sh
  downloads. Its prereq check demanded an `apktool` binary on PATH that the
  documented setup never provides, so it could not run after a clean setup.
- shim/gen_stubs.sh: it reads all_exports.txt, not shim_surface.txt; comment and
  emitted banner corrected. stubs.c regenerated (banner line only).
- shim/src/core.c: split seven `if (out) ...; return ...;` one-liners. Host
  build now compiles with zero warnings, down from seven.

Verified: host build 0 warnings; gen_stubs.sh output identical on regeneration;
bash -n clean on all edited scripts; pinned header/tarball URLs return 200 and
the tag tarball extracts to the expected directory name.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-18 02:15:10 -04:00

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#!/usr/bin/env bash
# Generate shim/src/stubs.c from analysis/all_exports.txt (the FULL 438-export set).
# Each ovrp_ function gets a stub returning a sensible ovrpResult, classified by
# name per SHIM-SCOPE.md buckets. Functions prototyped in the header (real sigs)
# are SKIPPED here and live in core.c instead.
set -euo pipefail
ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
# Use the ORIGINAL lib's FULL export set (438) so the shim is a complete drop-in:
# any dlsym of any ovrp_ resolves, even the 199 RE4 doesn't reference.
SURF="$ROOT/analysis/all_exports.txt"
OUT="$ROOT/shim/src/stubs.c"
mkdir -p "$ROOT/shim/src"
# functions with real prototypes in ovrplugin_shim.h -> handled in core.c
HEADER_FNS=" ovrp_GetNodePoseState3 ovrp_GetNodePoseStateRaw ovrp_GetControllerState4 \
ovrp_PreInitialize3 ovrp_Initialize5 ovrp_Shutdown2 ovrp_Update3 ovrp_WaitToBeginFrame \
ovrp_BeginFrame4 ovrp_EndFrame4 ovrp_GetPredictedDisplayTime ovrp_GetSystemHeadsetType2 \
ovrp_GetTrackingOriginType2 ovrp_SetTrackingOriginType2 ovrp_RecenterTrackingOrigin2 \
ovrp_SetupLayer ovrp_GetLayerTextureStageCount ovrp_GetLayerTexture2 \
ovrp_GetInstanceExtensionsVk ovrp_GetDeviceExtensionsVk \
ovrp_GetInitialized ovrp_GetSystemDisplayFrequency2 ovrp_GetTimeInSeconds \
ovrp_GetAppHasVrFocus2 ovrp_GetAppShouldQuit2 ovrp_GetUserPresent2 \
ovrp_GetAppShouldRecenter2 ovrp_GetAppShouldRecreateDistortionWindow2 \
ovrp_GetSystemMultiViewSupported2 ovrp_GetAppHasInputFocus ovrp_SetupDistortionWindow3 \
ovrp_CalculateEyeLayerDesc2 ovrp_CalculateEyeViewportRect ovrp_GetMixedRealityInitialized ovrp_CalculateLayerDesc ovrp_GetNodePresent2 ovrp_GetNodeOrientationValid ovrp_GetNodePositionValid ovrp_GetNodeOrientationTracked2 ovrp_GetNodePositionTracked2 ovrp_SetControllerVibration2 \
ovrp_GetTiledMultiResSupported ovrp_GetTiledMultiResLevel ovrp_SetTiledMultiResLevel \
ovrp_GetTiledMultiResDynamic ovrp_SetTiledMultiResDynamic ovrp_GetGPUFrameTime \
ovrp_DestroyLayer ovrp_GetNodeFrustum2 ovrp_SetSystemCpuLevel2 ovrp_SetSystemGpuLevel2 \
ovrp_IsPerfMetricsSupported ovrp_GetPerfMetricsFloat ovrp_GetPerfMetricsInt \
ovrp_GetAdaptiveGpuPerformanceScale2 \
ovrp_DestroyDistortionWindow2 ovrp_SetupDisplayObjects2 ovrp_SetReorientHMDOnControllerRecenter \
ovrp_SetClientColorDesc ovrp_SetAppEngineInfo2 ovrp_SetAppCPUPriority2 ovrp_InitializeMixedReality \
ovrp_GetViewportStencil ovrp_GetSystemRecommendedMSAALevel2 ovrp_GetLocalTrackingSpaceRecenterCount \
ovrp_GetLayerTextureFoveation ovrp_GetControllerHapticsDesc2 "
# NB: the trailing 12 are game-called () stubs now owned by passthru.c — they keep their
# original return constant when passthru is off, and tail-call the real lib when it's on.
{
echo '/* AUTO-GENERATED by gen_stubs.sh from analysis/all_exports.txt. Do not edit by hand. */'
echo '#include "ovrplugin_shim.h"'
echo '#include "log.h"'
echo
echo '/* Stub policy:'
echo ' * -1004 Unsupported : features we will not implement (MRC/camera/perf/boundary/hands)'
echo ' * 0 Success (no-op) : config setters we can safely accept-and-ignore for now'
echo ' * -1005 NotYetImplemented : real work still owed (getters/etc. the game needs)'
echo ' * Empty () = unspecified args: stub ignores args, returns constant in result reg. */'
echo
n_unsup=0; n_noop=0; n_todo=0; n_skip=0
while read -r fn; do
[ -z "$fn" ] && continue
case " $HEADER_FNS " in *" $fn "*) n_skip=$((n_skip+1)); continue;; esac
if echo "$fn" | grep -qE 'Media_|CameraDevice|ExternalCamera|HandState|Skeleton|GetMesh|HandTracking|HandNode|PerfMetric|GPUUtil|GPUFrameTime|ASW|TiledMultiRes|Boundary'; then
ret="ovrpFailure_Unsupported"; n_unsup=$((n_unsup+1))
elif echo "$fn" | grep -qE '^ovrp_Set[A-Z]|^ovrp_Reset|^ovrp_Recenter|^ovrp_SendEvent|^ovrp_Destroy|^ovrp_Override'; then
ret="ovrpSuccess"; n_noop=$((n_noop+1))
else
ret="ovrpFailure_NotYetImplemented"; n_todo=$((n_todo+1))
fi
printf 'OVRP_EXPORT ovrpResult %s() { static int o; if(!o){o=1;XRRLOG("stub %s -> %s");} return %s; }\n' "$fn" "$fn" "$ret" "$ret"
done < "$SURF"
echo
echo "/* generated: unsup=$n_unsup noop=$n_noop todo=$n_todo skipped(core)=$n_skip */"
} > "$OUT"
echo "wrote $OUT"
grep -c '^OVRP_EXPORT' "$OUT" | xargs echo "stub functions:"
tail -1 "$OUT"