public override void MakeCurrent(IWindowInfo window)
{
bool success;
if (window != null)
{
if (((WinWindowInfo)window).handle == IntPtr.Zero)
{
throw new ArgumentException("window", "Must point to a valid window.");
}
success = Wgl.wglMakeCurrent(((WinWindowInfo)window).DeviceContext, ContextHandle);
}
else
{
success = Wgl.wglMakeCurrent(IntPtr.Zero, IntPtr.Zero);
}
if (!success)
{
throw new GraphicsContextException(String.Format(
"Failed to make context {0} current. Error: {1}", this, Marshal.GetLastWin32Error()));
}
dc = Wgl.wglGetCurrentDC();
}
public WinGLContext(GraphicsMode format, WinWindow window)
{
Debug.Print("OpenGL will be bound to handle: {0}", window.WinHandle);
SelectGraphicsModePFD(format, window);
Debug.Print("Setting pixel format... ");
SetGraphicsModePFD(format, window);
ContextHandle = Wgl.wglCreateContext(window.DeviceContext);
if (ContextHandle == IntPtr.Zero)
{
ContextHandle = Wgl.wglCreateContext(window.DeviceContext);
}
if (ContextHandle == IntPtr.Zero)
{
throw new GraphicsContextException("Context creation failed. Error: " + Marshal.GetLastWin32Error());
}
if (!Wgl.wglMakeCurrent(window.DeviceContext, ContextHandle))
{
throw new GraphicsContextException("Failed to make context current. " +
"Error: " + Marshal.GetLastWin32Error());
}
dc = Wgl.wglGetCurrentDC();
Wgl.LoadEntryPoints();
vsync_supported = Wgl.wglSwapIntervalEXT != null;
}
