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tcige

how direct3d waits when not using D3DPRESENT_INTERVAL_IMMEDIATE

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if using D3DPRESENT_INTERVAL_IMMEDIATE, the core usage is high

 

but if not using D3DPRESENT_INTERVAL_IMMEDIATE, the core usage is almost 0

 

so how direct3d waits internally, ZwWaitForSingleObject or ZwDelayExecution or some way?

 

and for D3DPRESENT_INTERVAL_IMMEDIATE, why the core usage is not 100%?

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