[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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获得BackBuffer表面

1 Y$ y: h, b# r6 W然后用D3DX的函数保存

void ScreenShot (char *filename)
{
! M7 w1 P, \1 m; X* r$ x  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);

- X. T0 M' l( _" b5 }- g7 I9 r  // 获得BackBuffer的D3D Surface
  D3D9Device->GetBackBuffer(0, 0, D3DBACKBUFFER_TYPE_MONO, &back);

7 f2 Z* n0 {6 u2 T" \7 O' T  // 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
/ E; j* @+ o1 p2 A/ n4 w3 b  D3DXSaveSurfaceToFile(filename, D3DXIFF_BMP, tmp, NULL, NULL);
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- L& y- V5 z1 m8 R; h+ a# a2 D  // 释放Surface，防止内存泄漏
7 n$ \; p) U. u# K4 {$ A3 S4 u( @  SAFE_RELEASE(tmp);
' d1 E3 W) f; h8 ~2 @1 ~  SAFE_RELEASE(back);
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. g4 Q  Q( k2 @文件格式可以为：
5 K$ s+ G, S0 O) CD3DXIFF_BMP
   Microsoft Windows bitmap (BMP) file format.

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

- W+ a/ x4 W- B: ZD3DXIFF_PNG
   Portable Network Graphics (PNG) file format.
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D3DXIFF_DDS
0 W# ?$ d% w, O7 r: Y    Microsoft DirectDraw surface (DDS) file format.

D3DXIFF_DIB
   Windows device-independent bitmap (DIB) file format.

' U5 j0 \# B0 A0 Z, ~$ `, f3 v3 eD3DXIFF_HDR
   High dynamic range file format.

' X0 }6 F) {5 I3 t) TD3DXIFF_PFM
   Portable float map file format.