OpenGLControl thread check (RE: [Csgl-users] another problem in "csopengl.c")

[Ben H. <be...@ex...>]

I added the following code inside "class OpenGLControl" to make sure
that one disposes of the control with the same thread that one uses to
create it:
=20
class OpenGLControl {
	[...]
 	protected Thread	_threadParent =3D null;

	public OpenGLControl() {
		_threadParent =3D Thread.CurrentThread;
		[...]
	}
	protected override void Dispose( bool bDisposing ) {
		// Since OpenGL is thread dependent, OpenGLControl must
		// be disposed of by the same thread that created it.
		// The following assertion makes sure of the above:
		Debug.Assert( _threadParent =3D=3D Thread.CurrentThread );
		[...]
	}
	[...]
}

-ben houston
4th Year Cognitive Science/Neuroscience
Carleton University, Ottawa, Canada
( be...@ex... / 613-266-0637 )
=A0=20


> -----Original Message-----
> From: csg...@li... [mailto:csgl-users-
> ad...@li...] On Behalf Of Lloyd Dupont
> Sent: Thursday, November 15, 2001 5:23 PM
> To: Ben Houston
> Cc: 'CsGL'
> Subject: Re: [Csgl-users] another problem in "csopengl.c"
>=20
> obviously the threading context dispose issue is tedious.
>=20
> while i finish some code before doing a site update in a couple of
hour.
> (with the HG3D -> G3D issue and the new SDL_mixer class (for sound))
> the deleting context issue will wait a little.
>=20
> anyway i have a solution for you.
> try latest version of NeHe example. i rewrite lesson08 -> 17
> they no longer use a background thread calling Refresh() which is so
> slow...
>=20
> the new Main is the unthreaded following function:
> static bool DemoRun =3D true;
> public static void runDemo(DemoView aView, String title)
> {
> 	// init code...
>=20
> 	window.Show();
> 	while(DemoRun) {
> 		Application.DoEvents();
> 		view.OnPaint(null);
> 	}
> 	window.Hide();
> }
> DemoRun is a global (static) variable set to false in 'ESC' key
handler
>=20
>=20
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