This commit introduces several features:
- Backend Testing: Support testing across both OpenGL and Vulkan. Test
configurations expand per backend, and the Filament Engine alongside
ModelViewer is recreated dynamically when the backend switches to isolate
resources.
- UI Controls: Added a backend filter toggle and a test progress bar to the
main activity, themed appropriately using Material design.
- Memory Optimizations: Drastically reduced memory usage by displaying
scaled-down thumbnails (128x128) in the main list. Full-resolution images
are lazy-loaded from disk on demand when clicking a thumbnail to view, and
large bitmaps are aggressively recycled.
- Device Info Collection: ValidationResultManager now collects and reports
detailed GPU driver info for each instantiated backend in the output
results.json.
- Engine Teardown: Introduced an explicit destroy() method in ModelViewer to
ensure full resource cleanup during engine recreation.
3ab0b41b7d