D3D11_CREATE_DEVICE_DISABLE_GPU_TIMEOUT是否可以与D3D_FEATURE_LEVEL_11_0一起传递? [英] Can D3D11_CREATE_DEVICE_DISABLE_GPU_TIMEOUT be passed with D3D_FEATURE_LEVEL_11_0?

问题描述

MSDN on D3D11_CREATE_DEVICE_DISABLE_GPU_TIMEOUT 说:

Direct3D 11:直到Direct3D 11.1才支持此值.

Direct3D 11: This value is not supported until Direct3D 11.1.

这是指运行时版本还是功能级别?

Does this mean runtime version or feature level?

我可以将标志传递给 D3D11CreateDevice ，但仅通过功能级别11_0?

Can I pass the flag to D3D11CreateDevice but only pass feature level 11_0?

功能级别是否无关紧要，仅取决于安装的运行时版本?如果将标志传递给DX运行时11.0，会发生什么情况?会被默默地忽略吗?还是我首先必须以某种方式检测DX运行时版本，然后仅在DX运行时版本至少为11.1时才通过标志?

Is the feature level irrelevant and it just depends on the installed runtime version? What happens if I pass the flag to a DX runtime 11.0? Will it just be ignored silently? Or do I first have to detect the DX runtime version somehow, and then pass the flag only if the DX runtime version is at least 11.1?

推荐答案

确定您是否具有Direct3D 11.1运行时的正确"方法如下:

The 'correct' way to determine if you have the Direct3D 11.1 Runtime would be as follows:

#include <d3d11_1.h>
#include <wrl/client.h>

#pragma comment(lib,"d3d11.lib")

bool IsDirect3D11_1OrGreater()
{
    Microsoft::WRL::ComPtr<ID3D11Device> device;

    HRESULT hr = D3D11CreateDevice(
        nullptr,
        D3D_DRIVER_TYPE_NULL,
        nullptr,
        0,
        nullptr,
        0,
        D3D11_SDK_VERSION,
        device.GetAddressOf(),
        nullptr,
        nullptr
        );

    if (FAILED(hr))
        return false;

    Microsoft::WRL::ComPtr<ID3D11Device1> device1;
    return SUCCEEDED(device.As(&device1));
}

然后您呼叫IsDirect3D11_1OrGreater.如果是真的，那么可以放心使用D3D11_CREATE_DEVICE_DISABLE_GPU_TIMEOUT这样的标志，它要求Direct3D 11.1运行时

You then call IsDirect3D11_1OrGreater. If it's true, then you are safe to use a flag like D3D11_CREATE_DEVICE_DISABLE_GPU_TIMEOUT that requires the Direct3D 11.1 Runtime

请记住，您当然不应该使用D3D11_CREATE_DEVICE_DISABLE_GPU_TIMEOUT.实际上，它仅应用于大量占用GPU的DirectCompute程序，这些程序会大量占用GPU，并可能导致系统对UI失去响应.谨慎使用.

Keep in mind that you shouldn't be using D3D11_CREATE_DEVICE_DISABLE_GPU_TIMEOUT as a matter of course. It really only should be used for DirectCompute-heavy programs that are free to tie up the GPU a lot and potentially cause the system to become unresponsive to UI. Use it with caution.

这还意味着您的应用程序需要Direct3D功能级别11.0或更高版本才能使用DirectCompute 5.0-或-它需要Direct3D功能级别10.0并需要执行CheckFeatureSupport(D3D11_FEATURE_D3D10_X_HARDWARE_OPTIONS, ...)调用并验证D3D11_FEATURE_DATA_D3D10_X_HARDWARE_OPTIONS.ComputeShaders_Plus_RawAndStructuredBuffers_Via_Shader_4_x是否对DirectCompute正确4.0.

That also implies your application will require a Direct3D Feature Level 11.0 or greater card to use DirectCompute 5.0 -or- it will require Direct3D Feature Level 10.0 and need to do a CheckFeatureSupport(D3D11_FEATURE_D3D10_X_HARDWARE_OPTIONS, ...) call and verify D3D11_FEATURE_DATA_D3D10_X_HARDWARE_OPTIONS.ComputeShaders_Plus_RawAndStructuredBuffers_Via_Shader_4_x is true for DirectCompute 4.0.

如果IsDirect3D11_1OrGreater返回false，那么您应该告诉用户:

If IsDirect3D11_1OrGreater returns false, then you should tell the user:

This application requires the DirectX 11.1 Runtime. It is supported on
Windows 7 Service Pack 1 with KB2670838 or later Windows operating systems.

另请参见 DirectX 11.1和Windows 7 和 DirectX 11.1和Windows 7更新.

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