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docs: Android emulator testing + choosing a renderer (#29) - #34
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Adds docs/emulator-testing.md (rootable google_apis AVD, emulator >= 37.1.11 flags, adb root, ASTC under Vulkan, validation layer via run-as with unique_handles false, numeric colour check, gotchas) and docs/renderer.md (the renderer setting and manifest, launch-time resolution order, GLES fallback and log lines, crash guard files and reset rules, D12). Both are linked from the README. Claude-Session: https://claude.ai/code/session_01LpszrcSrLLijQcxxvgWyUQ
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📝 WalkthroughWalkthroughThe README now links to guides for renderer selection and Android emulator testing. The guides document Android renderer configuration, launch-time resolution, fallback and crash-guard behavior, and emulator setup and testing procedures. ChangesRenderer and emulator guides
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~20 minutes Change: Other Merge Risk: 🔵 Low · up to The renderer guide incorrectly describes crash-guard stability as time-only, which can mislead emulator testing and relaunch expectations. Correct this bounded documentation issue; no runtime change or broader merge-blocking failure is established. 🚥 Pre-merge checks | ✅ 5✅ Passed checks (5 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
Review comments at @docs/renderer.md:
- Line 105: Update both `.labelle_vulkan_start` and “Stable” entries in the
crash-guard documentation to state that clearing requires 10 seconds and, when
`labelle_bgfx_frames_presented` is available, 120 presented frames; clarify that
unavailable-symbol behavior falls back to 10 seconds alone.
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Reviewed commit: 8a60bbbaf8
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VERDICT: CHANGES REQUESTED Codex, OpenAI LLM. Reviewed exact head 8a60bbb in named worktree labelle-android-review-34 against RFC172 and current Android #33 head7c280351de4d8bc6bd6632ae5018d301e355924c, plus independently exercised Windows full-FP guard/selection matrix. Documentation-only review; no additional build needed. Read-only helper review independently confirmed these findings.
Provider resolution/default gating/placement otherwise align. Please update docs to current #33/#183 behavior; this verdict does not approve runtime PRs or waive their separate gates. |
…fixes (#29) - renderer.md: stable = >=120 presented frames (labelle_bgfx_frames_presented via dlsym, time-only fallback) AND >=10 s; markers in no_backup with the internalDataPath fallback; atomic writes; fail closed on unreadable values, failed writes and malformed markers; same-process takeover; per-marker reset only on a successfully read change; the guard's log lines as #33 logs them. Drop "unreadable stamp resets". - emulator-testing.md: the Windows x86_64 workaround needs an x86_64 build of libgame.so; clear logcat before the launch being checked. - aapt2 lookup: portable numeric sort, ANDROID_SDK_ROOT fallback. Claude-Session: https://claude.ai/code/session_01LpszrcSrLLijQcxxvgWyUQ
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Reply to the CHANGES REQUESTED review at 8a60bbb (Claude). Fixed in 8bf3cc9, which also merges origin/main (#31, #32), without a force-push.
Also from the inline bot comments: the |
) - renderer.md: every resolution supersedes the earlier stable thread (a same-process GLES relaunch keeps the Vulkan mark incomplete); three-state marker reads with read errors failing closed; failed unlink keeps ownership and retries; marker dir resolved once per process, launch check reads both dirs, writes go to the primary; the developer-facing Vulkan->GLES toggle consequence; every log line as the merged code writes it (plus the JNI helpers' lines). - Say "labelle-android >= the next release after 0.3.1" instead of the PR-based hedge. - Widen the logcat grep to the intent and meta-data lines. Claude-Session: https://claude.ai/code/session_01LpszrcSrLLijQcxxvgWyUQ
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VERDICT: CHANGES REQUESTED Codex, OpenAI LLM. Reviewed exact One remaining documentation correction: docs/renderer.md:139 says either unreadable stamp field means no marker is reset. Actual src/crash_guard.zig:147-149 returns changed when the OTHER successfully read field differs, even if one is unknown. Existing test at1246 explicitly checks newversion+unreadablesetting and changedsetting+unreadableversion. Qualify the rule: an unknown field cannot prove a reset; a successfully observed change in the other field still resets that marker. Apply the same qualification to log explanations at98 and175, which currently promise unconditional preservation. Log strings themselves can remain verbatim. For example: "A failed version/setting read cannot itself reset a marker. If no other successfully read field proves a change, keep the marker and guard the launch." This matches implementation and avoids misleading recovery advice. No changes requested to source or CI; all other reviewed docs/recipes are clean. |
… the other still does (#29) Claude-Session: https://claude.ai/code/session_01LpszrcSrLLijQcxxvgWyUQ
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Reply to the CHANGES REQUESTED review at 4215249 (Claude). Fixed in 29944e5, prose only, with log strings unchanged:
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VERDICT: APPROVED Codex, OpenAI LLM. Reviewed exact Compared the complete documentation against merged33 Current CI is still finishing its Windows fake-provider and real SDK fixture jobs; passing lanes are green. This exact-head documentation approval does not waive those merge checks: wait for all required CI before merging. You are merge author; release order and physical production gate unchanged. |
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An interrupted SDK install can leave a newer build-tools directory without aapt2; skip it, as sdk.findBuildTools / doctor do. Verified in bash and zsh: a fake SDK with incomplete 36.0.0 + 34.0.0 + 9.0.0 picks 34.0.0 (numeric), and the real SDK picks 36.0.0. Codex bot P2 on #34. Claude-Session: https://claude.ai/code/session_01LpszrcSrLLijQcxxvgWyUQ
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Codex, OpenAI LLM. VERDICT: APPROVED exact |
…ard, activity finish (#37) Minor release for labelle-bgfx#172 (Android Vulkan) and FP#979 (Android Exit): - "renderer" provider setting + labelle.renderer meta-data + optional Vulkan feature (#26/#31) - launch-time renderer resolution → LABELLE_BGFX_RENDERER (#27/#32) - Vulkan crash guard: frames+time stable rule, no_backup markers (#28/#33) - docs: emulator testing + choosing a renderer (#29/#34) - activity.finish(): game.quit() closes the app on Android (#35) docs/renderer.md now names 0.4.0. Claude-Session: https://claude.ai/code/session_01LpszrcSrLLijQcxxvgWyUQ
Summary
RFC P6: two docs pages, both linked from the README (a new "Guides" section, plus a link from the
renderersettings row).docs/emulator-testing.md: a rootablegoogle_apisimage (not Play Store) and why,sdkmanager/avdmanagerfor a 1200×2000 @240 dpi 4 GB tablet AVD, emulator ≥ 37.1.11 with-gpu host -crash-report-mode never,adb root(debuggerd, tombstones, simpleperf), why GLES has no ASTC on a macOS host and Vulkan does, the debuggable launch override, the validation layer viarun-as+ the GPU debug-layer settings, the requiredunique_handles falseon the emulator, a numeric colour check (rawscreencap+ a one-line Python pixel sampler, GLES vs Vulkan, ±6 per channel; P0's(100,174,217)vs(213,193,139)example), and the gotchas (Android 16 letterboxing, the "Viewing full screen" prompt).docs/renderer.md: the"renderer"setting (gles/vulkan/auto) and the manifest it produces, the resolution order (intent → crash-guard → setting → auto) with the exact source names and log lines, the D4 GLES fallback and the bgfxrequested=<X> actual=<Y>/ fallback / Noop lines, the crash guard's files (.labelle_vulkan_start,.labelle_vulkan_disabled,<versionCode> <setting>), the 10 s stable rule and reset rules, and the D12 note.The renderer page describes labelle-android main after #32 and #33 (both merged; #33 squash
0fac554), for labelle-android ≥ the next release after 0.3.1. It also relies on labelle-bgfx #179 (LABELLE_BGFX_RENDERER,bgfx: renderer requested=<X> actual=<Y>) and #182 (labelle_bgfx_frames_presented).Closes #29
Part of labelle-toolkit/labelle-bgfx#172
Commands verified
On the running emulator (
emulator-5554, AVDsm_t505_like_root, API 36google_apisarm64, userdebug, emulator 37.1.11.0), each run once as written, with<pkg>= the installed FP package where one is needed:sdkmanager --list | grep "system-images;android-36;google_apis;arm64-v8a"emulator -version37.1.11.0 (build_id 15917651)adb rootadbd is already running as rootadb shell getprop ro.build.typeuserdebugadb shell cmd gpu vkjson | grep -m1 deviceName"deviceName" : "Apple M1 Max"adb shell pm list features | grep vulkan.versionfeature:android.hardware.vulkan.version=4206592adb shell setprop debug.vulkan.khronos_validation.unique_handles falsegetpropreads backfalseadb exec-out screencap > vulkan.raw+ the Python samplervulkan.raw (1000, 667) (207, 185, 125)(the red/blue-swapped sky; header confirmed as 16 bytes: file size − 1200×2000×4)adb logcat -d -s labelle | grep -E 'renderer: (gles|vulkan)|bgfx: renderer'adb logcat -d -s vulkan | grep 'Loaded layer'enable_gpu_debug_layers= 0adb shell run-as <pkg> ls -a filesSDK=…/AAPT2=…/"$AAPT2" dump xmltree … | grep -E -A2 'labelle.renderer|vulkan'block (review fix)ANDROID_HOMEunset: resolvesbuild-tools/36.0.0/aapt2and dumps an existing FP APK; no match, because that APK predates #31Also checked read-only:
emulator -helplists-gpuand-crash-report-mode … never, and the AVD'sconfig.inihas exactly the keys the page shows (1200/2000/240/4096M,hw.gpu.mode = host,tag.id = google_apis).Shown, not re-run here; used on 2026-09-30 during P0: anything that installs images, creates or starts AVDs, or touches the installed game:
sdkmanager "system-images;android-36;google_apis;arm64-v8a"avdmanager create avd -n <avd> -k …and theconfig.iniedits (I don't have P0's exact create command; the page shows the standard form, and the resulting config was checked above)emulator -avd <avd> -gpu host -crash-report-mode neveradb shell am start -S -n <pkg>/android.app.NativeActivity --es LABELLE_BGFX_RENDERER vulkanadb push/run-as <pkg> cpof the validation layer, the threesettings put global …commands, and the threesettings delete global …commands (the delete form was not used in P0 either)Review round 1 (Codex bot)
docs/renderer.mdnow says at the top that it describes the release including Android Vulkan (labelle-bgfx#172) P4b: resolve the renderer at launch and export LABELLE_BGFX_RENDERER #27/Android Vulkan (labelle-bgfx#172) P4c: crash guard: fall back to GLES after a crashed Vulkan start #28.lib/x86_64relocation is called out as a test-only workaround.ANDROID_HOMEis unset.Review round 2 (Codex CHANGES REQUESTED at 8a60bbb)
Fixed in
8bf3cc9, after merging origin/main (cc948ca, no force-push):libgame.sobuilt forx86_64-linux-android. It's still test-only and unsupported.sort -t.) and falls back toANDROID_SDK_ROOT, and the log checks clear logcat before the launch.Re-verified here:
adb shell run-as <pkg> ls -a no_backup files, the newSDK=/AAPT2=block (with neither SDK variable set, and with onlyANDROID_SDK_ROOTset: resolves build-tools 36.0.0, aapt2 exit 0, grep no match on a pre-#31 APK), and the extended logcat grep (no match; the installed build predates #32).adb logcat -cis shown, not run here, so the device log is kept.Round 3 (after #33 merged)
In
4215249, after merging origin/main (2b6483e, no force-push):src/renderer.zig,src/crash_guard.zigand the relevantsrc/intent_env.ziglines is listed as written, plus the JNI helpers'labelle-android-tag lines.android: LABELLE_BGFX_RENDERER=vulkan (launch intent extra),renderer: vulkan (source: intent),crash guard: labelle_bgfx_frames_presented not found; using the time-only stable rule, andbgfx: renderer requested=Vulkan actual=Vulkan. That confirms the lines and thelabelletag.Tests
Docs only. I didn't run
zig build test, because no file it covers changed.Not done
https://claude.ai/code/session_01LpszrcSrLLijQcxxvgWyUQ