[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）

获得BackBuffer表面

+ q. E5 x2 a; b. }然后用D3DX的函数保存
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void ScreenShot (char *filename)
{
  IDirect3DSurface9 *tmp = NULL;
  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）
2 N- f( z6 L+ d) X* \  D3D9Device->CreateOffscreenPlainSurface(Width, Height, D3DFMT_A8R8G8B8, D3DPOOL_DEFAULT, &tmp, NULL);
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: l. b3 ^8 z9 K# x  // 获得BackBuffer的D3D Surface
$ U6 N2 {* a) Z7 V3 _  D3D9Device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back);

  // Copy一下，，需要时转换颜色格式
3 E" c) I: Z+ o& v& ~8 C6 j' g  D3DXLoadSurfaceFromSurface(tmp, NULL, NULL, back, NULL, NULL, D3DX_FILTER_NONE, 0);
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6 C+ [, p4 i: F. ]  // 保存成BMP格式
/ k* S/ @0 C: }9 `  D3DXSaveSurfaceToFile(filename, D3DXIFF_BMP, tmp, NULL, NULL);
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/ s% s8 B1 f9 @) K% _  // 释放Surface，防止内存泄漏
+ G( q  Q/ F& v0 B' e1 C. \  SAFE_RELEASE(tmp);
  SAFE_RELEASE(back);
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% h7 Z% i3 G1 h4 v# R, J4 ^文件格式可以为：
( t! u6 r2 o/ MD3DXIFF_BMP
  [7 W: c$ s% g& N! R    Microsoft Windows bitmap (BMP) file format.

7 D6 F7 U$ B2 R! E+ [1 rD3DXIFF_JPG
   Joint Photographics Experts Group (JPEG) compressed file format.

; `* j) s6 N, E1 O- I* P% C1 OD3DXIFF_PNG
   Portable Network Graphics (PNG) file format.

  f. w: a* |" N, V& H9 Q- i9 _D3DXIFF_DDS
% T( O# l( a; L* q" `8 _    Microsoft DirectDraw surface (DDS) file format.

D3DXIFF_DIB
   Windows device-independent bitmap (DIB) file format.
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D3DXIFF_HDR
   High dynamic range file format.
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D3DXIFF_PFM
   Portable float map file format.