//private class ScissorContext : IDisposable
//{
// private IntRectangle _previous;
// private bool _wasEnabled;
// private bool _isDisposed = false;
//
// public ScissorContext(IntRectangle region)
// {
// this._wasEnabled = Scissor.IsEnabled;
// this._previous = Scissor.Region;
// Scissor.Region = region;
// Scissor.IsEnabled = true;
// }
//
// ~ScissorContext()
// {
// Async.Throw(new ObjectDisposedIncorrectlyException("A context returned from GRaff.Graphics.Scissor.Context was garbage collected before Dispose was called."));
// }
//
// public void Dispose()
// {
// if (!_isDisposed)
// {
// GC.SuppressFinalize(this);
// _isDisposed = true;
// Scissor.Region = _previous;
// Scissor.IsEnabled = _wasEnabled;
// }
// else
// throw new ObjectDisposedException("Scissor");
// }
//}
//
public static IDisposable Use(IntRectangle region)
{
return(UseContext.CreateAt(
$"{typeof(Scissor).FullName}.{nameof(Use)}",
(enabled: Scissor.IsEnabled, region: Scissor.Region),
() => { Scissor.IsEnabled = true; Scissor.Region = region; },
previous => { Scissor.IsEnabled = previous.enabled; Scissor.Region = previous.region; }
));
}
public IDisposable Use()
{
return(UseContext.CreateAt(
$"{typeof(BlendMode).FullName}.{nameof(Use)}",
Current,
() => Current = this,
previous => Current = previous
));
}
public IDisposable Use()
{
return(UseContext.CreateAt(
$"{typeof(ShaderProgram).FullName}.{nameof(Use)}",
ShaderProgram.Current,
() => this.Bind(),
previous => previous.Bind()
));
}
public IDisposable Use()
{
return(UseContext.CreateAt($"{typeof(Framebuffer).FullName}.{nameof(Use)}",
(frameBuffer: Framebuffer.Current,
viewContext: View.Framebuffer().Use()),
() => GL.BindFramebuffer(FramebufferTarget.Framebuffer, this.Id),
capture =>
{
GL.BindFramebuffer(FramebufferTarget.Framebuffer, capture.frameBuffer?.Id ?? 0);
capture.viewContext.Dispose();
}));
}