void MyAGLReportError(string function)
{
Agl.AglError err = Agl.GetError();
if (err != Agl.AglError.NoError)
{
throw new Exception(String.Format(
"AGL Error from function {0}: {1} {2}",
function, err, Agl.ErrorString(err)));
}
}
void Dispose(bool disposing)
{
if (IsDisposed || Handle.Handle == IntPtr.Zero)
{
return;
}
Debug.Print("Disposing of AGL context.");
Agl.aglSetCurrentContext(IntPtr.Zero);
//Debug.Print("Setting drawable to null for context {0}.", Handle.Handle);
//Agl.aglSetDrawable(Handle.Handle, IntPtr.Zero);
// I do not know MacOS allows us to destroy a context from a separate thread,
// like the finalizer thread. It's untested, but worst case is probably
// an exception on application exit, which would be logged to the console.
// Actually, it seems to crash the mono runtime. -AMK 2013
Debug.Print("Destroying context");
if (Agl.aglDestroyContext(Handle.Handle) == true)
{
Debug.Print("Context destruction completed successfully.");
Handle = ContextHandle.Zero;
return;
}
// failed to destroy context.
Debug.WriteLine("Failed to destroy context.");
Debug.WriteLine(Agl.ErrorString(Agl.GetError()));
// don't throw an exception from the finalizer thread.
if (disposing)
{
throw new Exception(Agl.ErrorString(Agl.GetError()));
}
disposed = true;
}
public GraphicsMode SelectGraphicsMode(ColorFormat color, int depth, int stencil,
int samples, ColorFormat accum, int buffers, bool stereo, out IntPtr pixelformat)
{
do
{
pixelformat = SelectPixelFormat(
color, depth, stencil, samples, accum, buffers, stereo);
if (pixelformat == IntPtr.Zero)
{
if (!RelaxGraphicsMode(
ref color, ref depth, ref stencil, ref samples, ref accum,
ref buffers, ref stereo))
{
throw new GraphicsModeException("Requested GraphicsMode not available, error: " + Agl.GetError());
}
}
}while (pixelformat == IntPtr.Zero);
return(GetGraphicsModeFromPixelFormat(pixelformat));
}