beginFrame abstract method

void beginFrame()

Tells the backend a new frame is starting.

The one member here that is about time rather than about resources, and it exists because every backend has something that has to rotate: on flutter_gpu it is the ring of per-frame uniform allocators, which cannot be reset in place because submit is asynchronous and the GPU may still be reading the frame before last. A backend with nothing to rotate implements this as nothing.

Implementation

void beginFrame();