IDirect3DSurface9 转 ID3D11Texture2D

最新推荐文章于 2024-04-10 02:15:11 发布

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最新推荐文章于 2024-04-10 02:15:11 发布

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分类专栏：视频处理技术文章标签： 3d c++ 视频编解码 windows

本文链接：https://blog.youkuaiyun.com/qq_45749384/article/details/126669401

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导读

本文主要讲解IDirect3DSurface9格式转ID3D11Texture2D格式。

背景

解码方式：FFmpeg DXVA（IDirect3DSurface9 ）；

渲染方式：DX11（ID3D11Texture2D）。

正文

1.ID3D11Texture2D关联IDirect3DSurface9

ComPtr<ID3D11Texture2D>		m_pD3DTexture;
ComPtr<IDirect3DSurface9>	m_pD3D9Surf;

//DX11纹理描述符
D3D11_TEXTURE2D_DESC texDesc;
            ZeroMemory(&texDesc, sizeof(texDesc));
            texDesc.Width = m_width;
            texDesc.Height = m_height;
            texDesc.MipLevels = 1;
            texDesc.ArraySize = 1;
            texDesc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
            texDesc.SampleDesc.Count = 1;
            texDesc.BindFlags = D3D11_BIND_RENDER_TARGET | D3D11_BIND_SHADER_RESOURCE;
            texDesc.MiscFlags = D3D11_RESOURCE_MISC_SHARED;    //共享纹理

//创建纹理
HRESULT hr = m_d3dDevice->CreateTexture2D(&texDesc, NULL, m_pD3DTexture.GetAddressOf());
assert(S_OK == hr);

ComPtr<IDXGIResource> pDXGIResource;
m_pD3DTexture->QueryInterface(__uuidof(pDXGIResource),(void**)pDXGIResource.GetAddressOf());

HANDLE hSharedHandle;    //共享句柄
hr = pDXGIResource->GetSharedHandle(&hSharedHandle);
assert(S_OK == hr);

//根据纹理共享句柄创建DX9纹理
ComPtr<IDirect3DTexture9> pTexture9;
hr = m_pDecoder->GetDirect3DDevice9()->CreateTexture(texDesc.Width, texDesc.Height, 1, D3DUSAGE_RENDERTARGET, D3DFMT_A8R8G8B8,
                D3DPOOL_DEFAULT, pTexture9.GetAddressOf(), &hSharedHandle);
assert(S_OK == hr);

//获取DX9纹理表面
hr = pTexture9->GetSurfaceLevel(0, m_pD3D9Surf.GetAddressOf());
assert(S_OK == hr);

2.将Frame里的数据拷贝到关联DX9表面

m_pDX9Device->StretchRect((IDirect3DSurface9*)pFrame->data[3], nullptr, m_pD3D9Surf.Get(), nullptr, D3DTEXF_NONE);