[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）

8 P& s3 |; j8 Y! Y8 M" W获得BackBuffer表面

然后用D3DX的函数保存
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void ScreenShot (char *filename)
{
, x$ y  V- b8 i9 P  t  IDirect3DSurface9 *tmp = NULL;
  IDirect3DSurface9 *back = NULL;
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  //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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* q1 M# q% G& F" x: m% [4 T  // 获得BackBuffer的D3D Surface
  D3D9Device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back);

  // Copy一下，，需要时转换颜色格式
8 y9 B/ l( D2 @0 a5 {  y  D3DXLoadSurfaceFromSurface(tmp, NULL, NULL, back, NULL, NULL, D3DX_FILTER_NONE, 0);
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: Z! E: D! s7 h0 P3 o  // 保存成BMP格式
  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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. Q8 b/ Z+ f' \" a4 c# C. C文件格式可以为：
D3DXIFF_BMP
   Microsoft Windows bitmap (BMP) file format.

D3DXIFF_JPG
   Joint Photographics Experts Group (JPEG) compressed file format.
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D3DXIFF_PNG
   Portable Network Graphics (PNG) file format.
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, C) w1 S% [" ]% p% V  c% cD3DXIFF_DDS
* ~5 x, N* F6 k3 K. D( u    Microsoft DirectDraw surface (DDS) file format.
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( N* t  O! J. R. \D3DXIFF_DIB
; n9 M& k0 d/ P    Windows device-independent bitmap (DIB) file format.

4 I: x3 x3 V" X% |D3DXIFF_HDR
- |4 S! o! ]4 Q8 ]    High dynamic range file format.
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  y8 k9 J# C! B8 |' `D3DXIFF_PFM
   Portable float map file format.