Cache the QueryState used to drop swapchain TextureViews #11781
Merged
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Objective
While profiling around to validate the results of #9172, I noticed that
present_frames
can take a significant amount of time. Digging into the cause, it seems like we're creating a newQueryState
from scratch every frame. This involves scanning the entire World's metadata instead of just updating its view of the world.Solution
Use a
SystemState
argument to cache theQueryState
to avoid this construction cost.Performance
Against
many_foxes
, this seems to cut the time spent inpresent_frames
by nearly almost 2x. Yellow is this PR, red is main.