Module init  Copy item path  Source  DebugFlags  Flags to enable/disable various builtin debugging tools. WebRenderOptions  ONE_TIME_USAGE_HINT    Use this hint for all vertex data re-initialization. This allows
the driver to better re-use RBOs internally. HAS_BEEN_INITIALIZED    🔒  Is only false if no WR instances have ever been created. AsyncPropertySampler   Allows callers to hook into the main render_backend loop and provide
additional frame ops for generate_frame transactions. These functions
are all called from the render backend thread. RenderBackendHooks   SceneBuilderHooks   Allows callers to hook in at certain points of the async scene build. These
functions are all called from the scene builder thread. create_webrender_instance   Initializes WebRender and creates a Renderer and RenderApiSender. wr_has_been_initialized    Returns true if a WR instance has ever been initialized in this process.