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Residency 4: Add Facilities For Budgeting Device Memory

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Use D3D12's QueryDeviceVideoMemoryInfo to get the OS-determined process
budget. Also introduces an export for reserving some amount of process
memory - which keeps Dawn from using the entire process's budget.

Bug: dawn:193
Change-Id: I6c17bd703d7cb24759bcee89c03add46944fec8c
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/16383
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
This commit is contained in:
Brandon Jones
2020-03-17 13:47:57 +00:00
committed by Commit Bot service account
parent 971a6233c2
commit 1f0596818d
13 changed files with 157 additions and 6 deletions
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3
src/include/dawn_native/D3D12Backend.h
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@@ -38,6 +38,9 @@ namespace dawn_native { namespace d3d12 {
uint64_t acquireMutexKey;
};
DAWN_NATIVE_EXPORT uint64_t SetExternalMemoryReservation(WGPUDevice device,
uint64_t requestedReservationSize);
// Note: SharedHandle must be a handle to a texture object.
DAWN_NATIVE_EXPORT WGPUTexture
WrapSharedHandle(WGPUDevice device, const ExternalImageDescriptorDXGISharedHandle* descriptor);