public static byte[] Decode (byte[] pngData, out Size size, out PixelFormat pxFormat) {
IntPtr p;
int w, h;
var error = LibLodePng.Decode32(out p, out w, out h, pngData, (IntPtr)pngData.Length);
if (error != 0) {
throw new ContentException("Failed to load png");
//throw new ContentException ("Error decoding PNG: " + LibLodePng.ErrorText (error));
}
var buf = new byte[w * h * 4];
Marshal.Copy(p, buf, 0, buf.Length);
LibLodePng.Free(p);
size = new Size(w, h);
pxFormat = PixelFormat.Rgba;
return buf;
}
private void GrabScreenshot2()
{
if (_image == null || _image.Width != this.Width || _image.Height != this.Height)
{
_image = new System.Drawing.Bitmap(ClientSize.Width, ClientSize.Height);
}
System.Drawing.Imaging.BitmapData data = _image.LockBits(this.ClientRectangle, System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format24bppRgb);
//OpenTK.Graphics.OpenGL.GL.ReadPixels(0, 0, ClientSize.Width, ClientSize.Height, OpenTK.Graphics.PixelFormat.Bgr, OpenTK.Graphics.PixelType.UnsignedByte, data.Scan0)
OpenTK.Graphics.OpenGL.PixelFormat pxFormat = OpenTK.Graphics.OpenGL.PixelFormat.Bgr;
OpenTK.Graphics.OpenGL.PixelType pxType = OpenTK.Graphics.OpenGL.PixelType.UnsignedByte;
OpenTK.Graphics.OpenGL.GL.ReadPixels(0, 0, ClientSize.Width, ClientSize.Height, pxFormat, pxType, data.Scan0);
_image.UnlockBits(data);
_image.RotateFlip(System.Drawing.RotateFlipType.RotateNoneFlipY);
}
public static void ClearNamedBufferSubData <T6>(UInt32 buffer, OpenTK.Graphics.OpenGL.ExtDirectStateAccess internalformat, OpenTK.Graphics.OpenGL.PixelFormat format, OpenTK.Graphics.OpenGL.PixelType type, IntPtr offset, IntPtr size, [InAttribute, OutAttribute] ref T6 data)
where T6 : struct
{
ClearNamedBufferSubData(buffer, internalformat, offset, size, format, type, ref data);
}
public static void ClearNamedBufferSubData(UInt32 buffer, OpenTK.Graphics.OpenGL.ExtDirectStateAccess internalformat, OpenTK.Graphics.OpenGL.PixelFormat format, OpenTK.Graphics.OpenGL.PixelType type, IntPtr offset, IntPtr size, IntPtr data)
{
ClearNamedBufferSubData(buffer, internalformat, offset, size, format, type, data);
}
public static byte[] Decode (Stream stream, out Size size, out PixelFormat pxFormat) {
var buf = new byte[stream.Length];
stream.Read(buf, 0, buf.Length);
stream.Close();
return Decode(buf, out size, out pxFormat);
}
