[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）

; q- L8 Q0 ?, F$ F获得BackBuffer表面
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0 ~7 ~( G& ~$ x% v  B% b3 H1 M- X然后用D3DX的函数保存
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void ScreenShot (char *filename)
{
# v) p9 E, p* j  IDirect3DSurface9 *tmp = NULL;
. W' R  P; Z; U# \# I  ]2 s  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）
8 J( d" L' T# j, b3 o# Q' v  D3D9Device->CreateOffscreenPlainSurface(Width, Height, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &tmp, NULL);

  // 获得BackBuffer的D3D Surface
  D3D9Device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back);
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% g' R9 J, |! O9 l5 d  // 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
( K4 i- V% C: G  SAFE_RELEASE(tmp);
9 l- |' x. `5 ?  m3 X  SAFE_RELEASE(back);
}
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' V$ T& H$ K' a' Q3 i文件格式可以为：
D3DXIFF_BMP
- j7 J! x% X* e3 y" S% `    Microsoft Windows bitmap (BMP) file format.

  _3 u2 v8 p! l# r0 B) CD3DXIFF_JPG
   Joint Photographics Experts Group (JPEG) compressed file format.
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6 J8 @" w  _$ G( XD3DXIFF_PNG
   Portable Network Graphics (PNG) file format.
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. g- K( C5 i- {D3DXIFF_DDS
   Microsoft DirectDraw surface (DDS) file format.

D3DXIFF_DIB
! F; T" X0 \, L  B( C$ b    Windows device-independent bitmap (DIB) file format.
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% z' T3 [, A9 L' b, Q* d6 vD3DXIFF_HDR
   High dynamic range file format.

D3DXIFF_PFM
/ q- Y0 N0 k1 J  W    Portable float map file format.