如何将OPENGL图像保存到BMP文件

如何将OPENGL图像保存到BMP文件

2009-01-09 18:59:20| 分类： 3D(GL+DX) | 标签： |字号大中小 订阅

/// Grabs a screenshot of the frontbuffer contents.

/// A System.Drawing.Bitmap, containing the contents of the frontbuffer.

public Bitmap GrabScreenshot()

{

// 定义一个同目标窗体尺寸一样的位图

Bitmap bmp = new Bitmap(this.ClientSize.Width, this.ClientSize.Height);

// 定义与位图绑定的BitmapData对象

System.Drawing.Imaging.BitmapData data =

bmp.LockBits(this.ClientRectangle, System.Drawing.Imaging.ImageLockMode.WriteOnly,

System.Drawing.Imaging.PixelFormat.Format24bppRgb);

// 从GL环境中读取像素数据

Gl.glReadPixels(0, 0, this.ClientSize.Width, this.ClientSize.Height, Gl.GL_BGR, PixelType.UnsignedByte,

data.Scan0);

bmp.UnlockBits(data);

// 旋转

bmp.RotateFlip(RotateFlipType.RotateNoneFlipY);

return bmp;

}

#endregion