[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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3 U) j1 }8 g5 h4 ?获得BackBuffer表面
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然后用D3DX的函数保存

void ScreenShot (char *filename)
{
  IDirect3DSurface9 *tmp = NULL;
# X+ j5 G6 ~* A( Y) o8 R/ F  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);

  // 获得BackBuffer的D3D Surface
( j! q- u! k" k" z% ^9 x  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);

  // 保存成BMP格式
. e5 n6 T. O$ U* V& n8 W: a3 J  D3DXSaveSurfaceToFile(filename, D3DXIFF_BMP, tmp, NULL, NULL);
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  // 释放Surface，防止内存泄漏
5 a1 c% H* e! E  SAFE_RELEASE(tmp);
  SAFE_RELEASE(back);
}

" a9 y1 |& W! B2 H) Y. B文件格式可以为：
D3DXIFF_BMP
$ d' z- `8 Q# j- R- z/ ^0 Z    Microsoft Windows bitmap (BMP) file format.
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D3DXIFF_JPG
   Joint Photographics Experts Group (JPEG) compressed file format.
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- {, N0 W; A! Q+ ^6 _9 P6 b& QD3DXIFF_PNG
   Portable Network Graphics (PNG) file format.
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D3DXIFF_DDS
   Microsoft DirectDraw surface (DDS) file format.

/ `  P0 M* l+ i+ p9 j6 @, H1 xD3DXIFF_DIB
   Windows device-independent bitmap (DIB) file format.

D3DXIFF_HDR
+ `, V, w' i% t& t$ G1 [    High dynamic range file format.

* Y4 H: p5 e+ J" M4 ^8 HD3DXIFF_PFM
2 g; l0 A; T% S' u    Portable float map file format.