[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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0 {5 f7 Z1 j) }6 c) F2 B/ T获得BackBuffer表面
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然后用D3DX的函数保存
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void ScreenShot (char *filename)
# }: y+ h- J% r0 M5 h5 [+ Y- s{
  IDirect3DSurface9 *tmp = NULL;
- M5 M" }9 Z" {8 z& B# Q" t0 T- X  IDirect3DSurface9 *back = NULL;

& r2 v. ^* X  p, v, U$ b) @  //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
  D3D9Device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back);
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" Q) L- @; r5 ^. _- F  // 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);

& y) I6 v1 i) U6 M( w% g  // 释放Surface，防止内存泄漏
  SAFE_RELEASE(tmp);
  SAFE_RELEASE(back);
}

文件格式可以为：
D3DXIFF_BMP
6 ~4 q8 e- J( O4 ]    Microsoft Windows bitmap (BMP) file format.

D3DXIFF_JPG
   Joint Photographics Experts Group (JPEG) compressed file format.

D3DXIFF_PNG
) F# |  b- x- U  v+ e6 Z    Portable Network Graphics (PNG) file format.
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4 Z6 G7 r! q! j; s# P8 ]# wD3DXIFF_DDS
$ H; Y& `5 W, c; S* L0 d    Microsoft DirectDraw surface (DDS) file format.
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& z! c, p: F; }5 Y! wD3DXIFF_DIB
- K$ X# s" m  v) x* d    Windows device-independent bitmap (DIB) file format.
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: {: u1 c8 z0 U; P( c: c* @. RD3DXIFF_HDR
   High dynamic range file format.

% x+ @# v) r3 D+ b* n6 j8 }D3DXIFF_PFM
   Portable float map file format.