D3D Export

 

 1 D3DDISPLAYMODE d3ddm;
 2 pD3D9->GetAdapterDisplayMode(D3DADAPTER_DEFAULT, &d3ddm);
 3 IDirect3DSurface9* pD3DSurfTemp;
 4 hr = pD3D9Device->CreateOffscreenPlainSurface(m_dwD3DWidth, m_dwD3DHeight, d3ddm.Format, D3DPOOL_SYSTEMMEM, &pD3DSurfTemp, NULL);
 5 hr = pD3DDevice->GetRenderTargetData(m_pRenderTarget, pD3DSurfTemp);
 6 
 7 D3DLOCKED_RECT lockRect = {0};
 8  if (SUCCEEDED(pD3DSurfTemp->LockRect(&lockRect, NULL, 0)))
 9 {
10 ...
11 　　pD3DSurfTemp->UnlockRect();
12 }

 

从离屏缓冲pD3DSurfTemp上Lock数据要比直接从m_pRenderTarget快很多