DXGIAdapters

DXGIAdapters.cpp

#include <stdio.h>
#include <dxgi.h>

#pragma comment(lib, "dxgi.lib")
#pragma comment(lib, "dxguid.lib")

int main()
{
    wprintf(L"Available DXGI adapters and outputs:\n");

    IDXGIFactory1* pFactory = nullptr;
    HRESULT hr = CreateDXGIFactory1(IID_IDXGIFactory1, (void**)(&pFactory));

    if (SUCCEEDED(hr)) {
        IDXGIAdapter1* pAdapter = nullptr;
        UINT adapter = 0;
        while (SUCCEEDED(pFactory->EnumAdapters1(adapter, &pAdapter))) {
            DXGI_ADAPTER_DESC1 adapterDesc = {};
            hr = pAdapter->GetDesc1(&adapterDesc);
            if (SUCCEEDED(hr)) {
                wprintf(L"\n");
                wprintf(L"Graphics adapter[%u]: %s (%04X:%04X) %zu MiB",
                    adapter,
                    adapterDesc.Description,
                    adapterDesc.VendorId,
                    adapterDesc.DeviceId,
                    adapterDesc.DedicatedVideoMemory / (1024 * 1024)
                );
                if (adapterDesc.Flags == DXGI_ADAPTER_FLAG_SOFTWARE) {
                    wprintf(L" software");
                }
                wprintf(L"\n");
            }

            UINT output = 0;
            IDXGIOutput* pDXGIOutput = nullptr;
            while (SUCCEEDED(pAdapter->EnumOutputs(output, &pDXGIOutput))) {
                DXGI_OUTPUT_DESC outputDesc = {};
                hr = pDXGIOutput->GetDesc(&outputDesc);
                if (SUCCEEDED(hr)) {
                    wprintf(L"    Output device[%u]: %s %dx%d\n",
                        output,
                        outputDesc.DeviceName,
                        outputDesc.DesktopCoordinates.right - outputDesc.DesktopCoordinates.left,
                        outputDesc.DesktopCoordinates.bottom - outputDesc.DesktopCoordinates.top);
                }
                output++;
            }
            ++adapter;
        }
    }

    wprintf(L"\n");
    wprintf(L"\nPress any key to quit... ");
    getchar();

    return 0;
}