CODEWITHSUNDEEP
c++directx
Duckdoom5
Duckdoom5

Reputation: 764

Directx get VRAM used by game

I'm trying to get the total amount of VRAM my game is currently using. I want to display this in my debug information.

When I was using the Visual Studio Graphics Analyzer I got an idea. I figured that I could get the amount of VRAM used by adding the size of each of the graphic objects as seen in the Graphics Object Table.

Unfortunately I have no idea how to get each of those objects. Is there a simple way to get these?

Upvotes: 3

Views: 2112

Answers (1)

Duckdoom5
Duckdoom5

Reputation: 764

I actually found an easier way to do this:

#include <dxgi1_4.h>

...

IDXGIFactory4* pFactory;
CreateDXGIFactory1(__uuidof(IDXGIFactory4), (void**)&pFactory);

IDXGIAdapter3* adapter;
pFactory->EnumAdapters(0, reinterpret_cast<IDXGIAdapter**>(&adapter));

DXGI_QUERY_VIDEO_MEMORY_INFO videoMemoryInfo;
adapter->QueryVideoMemoryInfo(0, DXGI_MEMORY_SEGMENT_GROUP_LOCAL, &videoMemoryInfo);

size_t usedVRAM = videoMemoryInfo.CurrentUsage / 1024 / 1024;

This gets the currently used VRAM from the default (ID 0) adapter and converts it to megabytes.

Note: This does require the use of the windows 10 SDK

Upvotes: 5

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