Hi,

In an Intel presentation about DX12 there was a mention about a "trimming request" from the OS :

https://software.intel.com/sites/default/files/managed/4a/38/Efficient-Rendering-with-DirectX-12-on-Intel-Graphics.pdf

ie the OS can ask an app to trim memory, and the app has to release memory/making it unresident otherwise it is suspended.

But I don't find anything related to these trimming request in the final version of DX12. And the resident/unresident concept seem to be limited to memory tiling, not to every memory allocation.

Has this been removed or do I miss Something ?

See the residency article, particularly RegisterVideoMemoryBudgetChangeNotificationEvent (listener-like interface, wakes up a thread waiting on the handle) and QueryVideoMemoryInfo (poll-like interface)