[收藏]D3D中简单的截图方法

天云上人

  在渲染完所有东东后（Present之前）

获得BackBuffer表面

然后用D3DX的函数保存

void ScreenShot (char *filename)
{
3 ]5 X( _2 X0 a0 k2 H/ T4 f) i  IDirect3DSurface9 *tmp = NULL;
3 }) ?, L% k! c2 v9 [7 x1 Q  IDirect3DSurface9 *back = NULL;

  //生成固定颜色模式的离屏表面（Width和 Height为屏幕或窗口的宽高）
  D3D9Device->CreateOffscreenPlainSurface(Width, Height, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &tmp, NULL);
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! v( s( p5 F% g4 T/ W* R6 Y, X$ e6 s  // 获得BackBuffer的D3D Surface
9 W8 a3 B, V+ L* I! y  D3D9Device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back);

  // Copy一下，，需要时转换颜色格式
  D3DXLoadSurfaceFromSurface(tmp, NULL, NULL, back, NULL, NULL, D3DX_FILTER_NONE, 0);
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  // 保存成BMP格式
  D3DXSaveSurfaceToFile(filename, D3DXIFF_BMP, tmp, NULL, NULL);

  // 释放Surface，防止内存泄漏
  SAFE_RELEASE(tmp);
2 O' I0 g* g, i$ R2 N8 ?) x" ]  SAFE_RELEASE(back);
}
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) G+ h: `$ ]( o' p, W9 [文件格式可以为：
0 k$ M- B( s4 i% F4 z# f9 ^. _D3DXIFF_BMP
9 ?( A- Q" [4 _2 ]4 m    Microsoft Windows bitmap (BMP) file format.
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D3DXIFF_JPG
4 E4 l9 b4 W9 P. \6 @  ~+ @, F8 ~5 a3 W    Joint Photographics Experts Group (JPEG) compressed file format.

D3DXIFF_PNG
   Portable Network Graphics (PNG) file format.
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D3DXIFF_DDS
   Microsoft DirectDraw surface (DDS) file format.
  v4 O% _. B4 ]
" U! p5 }1 a* U7 AD3DXIFF_DIB
   Windows device-independent bitmap (DIB) file format.
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/ E; F/ L+ {  s, }# KD3DXIFF_HDR
8 J( |4 `$ H0 I; P2 O$ v6 p4 O    High dynamic range file format.

5 v7 Y2 A9 B% K  v$ {4 N* V' v! TD3DXIFF_PFM
! F* n$ f1 Y4 s7 i% Q: r    Portable float map file format.