stable opengl timestamps with D3D12

main.cpp

#ifdef _WIN32
#include <d3d12.h>
#include <dxgi1_5.h>

#pragma comment(lib, "d3d12.lib")
#pragma comment(lib, "dxgi.lib")
#endif

#ifdef _WIN32
void SetStablePowerState()
{
    IDXGIFactory4* pDXGIFactory;
    CreateDXGIFactory1(IID_PPV_ARGS(&pDXGIFactory));

    IDXGIAdapter1* pDXGIAdapter;
    pDXGIFactory->EnumAdapters1(0, &pDXGIAdapter);

    ID3D12Device* pDevice;
    D3D12CreateDevice(pDXGIAdapter, D3D_FEATURE_LEVEL_11_0, IID_PPV_ARGS(&pDevice));
    pDevice->SetStablePowerState(TRUE);
}
#else
void SetStablePowerState()
{
    // I don't know how to do this on other platforms.
}
#endif

int main()
{
    SetStablePowerState();
    
    // Rest of OpenGL program as usual...
}

Note: you need to enable developer mode to call SetStablePowerState().