Repeatedly closing/reopening a window and re-initializing the render system
(single-process unit_test run) crashed because:
- The Vulkan surface/swapchain stayed bound to the destroyed native window.
SDL can hand back the same pointer for a recreated window, so pointer
identity could not detect the stale surface; present() then hit
getSurfaceCapabilitiesKHR: ErrorUnknown.
- The ImGui context and Vulkan present-overlay survived the window, so a
later present() drew into an unrelated window via the stale overlay.
- headlessImGuiWalk destroyed the ImGui context while the UI backend's real
context was still current (CreateContext only auto-switches current when
GImGui is NULL), leaving a dangling context for later present() calls.
Fix:
- Window::close() calls Graphics::onNativeWindowDestroyed(); the Vulkan
backend drops the surface/swapchain and fires registered window-destroyed
callbacks (UI backend tears down its ImGui context here).
- initWithWindow() rebuilds the swapchain synchronously and no longer relies
on pointer identity to detect a stale surface.
- ImGuiBackend owns its ImGui context explicitly and shuts it down via the
window-destroyed hook; shutdown() switches to its own context first.
- headlessImGuiWalk switches to and from its private ImGui context.
Test-only fixes exposed once the suite can run to completion:
- animation_skinned: Animation::create() returns the process-wide singleton;
do not wrap it in unique_ptr (delete left a dangling ModuleManager pointer).
- particles attach tests: emitters live in a process-wide ECS; detach (and
clear skin sources) before local skeletons are destroyed.
Adds EVENGINE_ANDROID_TEST_APP build mode: the unit_test sources are
compiled into libmain.so (SDL entry) and packaged by the existing Gradle
APK along with the test assets, so the full zeroerr suite can run on a
device via adb logcat.
- test/main.cpp: Android runner with LogcatBuf (cout/cerr -> logcat),
chdir to <files>/evengine_test, SDL_Init; keeps SDL_main symbol unmangled.
- test/PathBesideSource.h: shared pathBesideThisSource helper that maps
__FILE__ to the on-device unpacked tree on Android.
- EVTestActivity: unpacks assets/test + assets/examples to internal
storage and passes an optional --testcase filter from an intent extra.
- test/CMakeLists.txt: builds `main` instead of unit_test on Android,
excludes desktop-only devtools tests, links Android system libs.
- Makefile: build/android-debug-test, sync/android-test-assets,
run/android-test-debug, log/android-test targets.
- Gradle wrapper bumped to 8.5 for Java 21 compatibility.
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