我想创建一个纹理加载器。但是,当我创建以下行时:
HRESULT res = CreateWICTextureFromFile(device, file.c_str(),&resource,&shaderResourceView,0);
它返回E_NOINTERFACE
。我要加载的文件明确存在,并且ID3D11Device
和ID3D11DeviceContext
均已成功创建。
这是我的课堂宣言:
using std::wstring;
using Microsoft::WRL::ComPtr;
using DirectX::CreateWICTextureFromFile;
class Texture2DHandle {
private:
ComPtr<ID3D11Texture2D> texture;
ComPtr<ID3D11ShaderResourceView> shaderResourceView;
public:
Texture2DHandle() = default;
Texture2DHandle(void* data, int w, int h, DXGI_FORMAT format, ID3D11Device* device);
Texture2DHandle(wstring file, ID3D11Device* device, ID3D11DeviceContext* context);
ID3D11Texture2D* tex() const;
ID3D11ShaderResourceView* srv() const;
};
这是构造函数的定义:
Texture2DHandle::Texture2DHandle(wstring file, ID3D11Device* device,ID3D11DeviceContext* context)
{
ComPtr<ID3D11Resource> resource;
HRESULT res = CreateWICTextureFromFile(device, file.c_str(),&resource,&shaderResourceView,0);
if (FAILED(res))
throw std::exception("Could not load texture from file!");
res = resource.As<ID3D11Texture2D>(&texture);
if (FAILED(res))
throw std::exception("Could not load texture from file!");
}
由于Device和DeviceContext都存在,所以我不知道E_NOINTERFACE
的含义
确保已初始化COM,因为这是最可能的问题。
#if (_WIN32_WINNT >= 0x0A00 /*_WIN32_WINNT_WIN10*/)
Microsoft::WRL::Wrappers::RoInitializeWrapper initialize(RO_INIT_MULTITHREADED);
if (FAILED(initialize))
// error
#else
HRESULT hr = CoInitializeEx(nullptr, COINITBASE_MULTITHREADED);
if (FAILED(hr))
// error
#endif
请参见WICTextureLoader以获取详细文档。