ARCed.Controls.GraphicsDeviceControl.BeginDraw C# (CSharp) Метод

        string BeginDraw()
        {
            // If we have no graphics device, we must be running in the designer.
            if (this.graphicsDeviceService == null)
            {
                return Text + "\n\n" + GetType();
            }

            // Make sure the graphics device is big enough, and is not lost.
            string deviceResetError = this.HandleDeviceReset();

            if (!string.IsNullOrEmpty(deviceResetError))
            {
                return deviceResetError;
            }

            // Many GraphicsDeviceControl instances can be sharing the same
            // GraphicsDevice. The device backbuffer will be resized to fit the
            // largest of these controls. But what if we are currently drawing
            // a smaller control? To avoid unwanted stretching, we set the
            // viewport to only use the top left portion of the full backbuffer.
            var viewport = new Viewport
            {
                X = 0,
                Y = 0,
                Width = ClientSize.Width,
                Height = ClientSize.Height,
                MinDepth = 0,
                MaxDepth = 1
            };

            this.GraphicsDevice.Viewport = viewport;

            return null;
        }