[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）
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获得BackBuffer表面
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然后用D3DX的函数保存
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" N' D$ a3 ]8 U2 D+ ivoid ScreenShot (char *filename)
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- q4 k* R0 N7 ~) u* _  IDirect3DSurface9 *tmp = NULL;
' N3 `% x% G/ t" x  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）
3 \/ C* t" d; l! w  D3D9Device->CreateOffscreenPlainSurface(Width, Height, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &tmp, NULL);
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/ m. f9 p4 l3 O7 }( ^% U  // 获得BackBuffer的D3D Surface
  D3D9Device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back);

, I, D0 g$ v1 R  // Copy一下，，需要时转换颜色格式
' o! Y1 m$ k4 s! S. \  D3DXLoadSurfaceFromSurface(tmp, NULL, NULL, back, NULL, NULL, D3DX_FILTER_NONE, 0);
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  // 保存成BMP格式
' w" S$ z; ^4 ?! ?3 S  D3DXSaveSurfaceToFile(filename, D3DXIFF_BMP, tmp, NULL, NULL);
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  // 释放Surface，防止内存泄漏
  SAFE_RELEASE(tmp);
  SAFE_RELEASE(back);
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文件格式可以为：
/ P. H/ }7 }2 FD3DXIFF_BMP
   Microsoft Windows bitmap (BMP) file format.
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D3DXIFF_JPG
   Joint Photographics Experts Group (JPEG) compressed file format.

D3DXIFF_PNG
1 ?5 l( F8 d, b( \0 d    Portable Network Graphics (PNG) file format.
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) i* w! k7 w- j; p7 D" uD3DXIFF_DDS
   Microsoft DirectDraw surface (DDS) file format.
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D3DXIFF_DIB
   Windows device-independent bitmap (DIB) file format.
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D3DXIFF_HDR
   High dynamic range file format.

D3DXIFF_PFM
- g4 ]7 W6 r3 e# m  {  J5 f: |    Portable float map file format.