DIRECTX 9 SDK里面有没有屏幕抓图的例子？

Question

DIRECTX 9 SDK里面有没有屏幕抓图的例子？如果没有哪里可以找到？

Answer 1

http://bbs.csdn.net/topics/60461454
以前有人问过

Answer 2

1,Getbackbuffer(...)
2,CreateSurface (d3dpool_system)
3,StretchRect backbuffer -> ysytembuffer
4,D3DXSaveSurfaceToFile

Answer 3

void CrD3DWndCL::RenderToFileM( const CString &fileName, CString *pOrgFileName, BOOL bClear, D3DXIMAGE_FILEFORMAT format )
{
   IDirect3DSurface9 *pOldSurface = NULL;
   IDirect3DSurface9 *pSurfOldDepthStencil = NULL;
   IDirect3DSurface9 *pNewSurface = NULL;
   IDirect3DDevice9  *pd3dDevice = graphicsM.GetDeviceCOM();
   IDirect3DTexture9 *pTex  = NULL;
   HRESULT  hr;   
   ASSERT( pd3dDevice != NULL );   if( pOrgFileName == NULL )
   {
      CRect wndRc;
      GetClientRect( &wndRc );
      hr = pd3dDevice->CreateTexture( wndRc.Width(), wndRc.Height(), 1,
                                               D3DUSAGE_RENDERTARGET,
                                               D3DFMT_A8R8G8B8,
                                               D3DPOOL_DEFAULT, &pTex, NULL );
      if( FAILED( hr ) )
      {
         TRACE( "创建纹理失败！\n" );
         return;
      }
   }
   else
   {
      CString orgFile( *pOrgFileName );
      hr = D3DXCreateTextureFromFileEx( pd3dDevice, orgFile, D3DX_DEFAULT, D3DX_DEFAULT, D3DX_FROM_FILE,
         D3DUSAGE_RENDERTARGET,D3DFMT_UNKNOWN, D3DPOOL_DEFAULT,D3DX_FILTER_LINEAR, D3DX_FILTER_LINEAR, 0,0,0, &pTex);
      if( FAILED( hr ) )
      {
         TRACE( "加载纹理图片(%s)失败！\n", orgFile );
         return;
      }
   }
   ASSERT( pTex != NULL );
   pTex->GetSurfaceLevel( 0, &pNewSurface );
   ASSERT( pNewSurface != NULL );   setLightM( );
   if( SUCCEEDED( pd3dDevice->BeginScene() ) )
   {
      pd3dDevice->GetRenderTarget( 0, &pOldSurface ); 
      pd3dDevice->GetDepthStencilSurface( &pSurfOldDepthStencil );        pd3dDevice->SetRenderTarget( 0, pNewSurface );
      DWORD flags = D3DCLEAR_ZBUFFER;
      if( bClear )
      {
         flags |= D3DCLEAR_TARGET;
      }
      pd3dDevice->Clear( 0, NULL, flags, bgClrM, 1.0f, 0 );
      pd3dDevice->SetRenderState(  D3DRS_ZENABLE, D3DZB_TRUE );      if( pWndMgrM != NULL )
      {
         pWndMgrM->OnRenderM();
      }      pd3dDevice->SetRenderState(  D3DRS_ZENABLE, D3DZB_FALSE );      renderTextM();
      pNewSurface->Release();      D3DXSaveTextureToFile( fileName, format, pTex, NULL ); 
      pd3dDevice->SetDepthStencilSurface( pSurfOldDepthStencil );      pd3dDevice->SetRenderTarget( 0, pOldSurface );      pd3dDevice->EndScene();
   }
   pd3dDevice->SetRenderState( D3DRS_LIGHTING, FALSE );   pTex->Release();
}

Answer 4

自己写个filter，抓取里面的帧就可以了