• backend: Disable timer queries on all Mali GPUs (fixes b/233754398)
• engine: Add a way to query the validity of most filament objects (see Engine::isValid)
• opengl: fix b/290388359 : possible crash when shutting down the engine
• engine: Improve precision of frame time measurement when using emulated TimerQueries
• backend: Improve frame pacing on Android and Vulkan.
• backend: workaround b/291140208 (gltf_viewer crashes on Nexus 6P)
• engine: support setDepthFunc for MaterialInstance
• web: Added setDepthFunc()/getDepthFunc() to MaterialInstance
• android: Added setDepthFunc()/getDepthFunc() to MaterialInstance