Basic GLSL SFML.Net skeleton

gistfile1.cs

using SFML.Graphics;
using SFML.System;
using SFML.Window;
using System;
using System.Collections.Generic;
using System.Linq;

namespace OMGITSANAMESPACE
{
    class Program
    {
        private static RenderWindow window;
        private static RenderStates shaderState;

        static void Main(string[] args)
        {
            PreRun();
            LoadContentInitialize();

            while (window.IsOpen)
            {
                UpdateDraw(window);
            }
        }

        private static void PreRun()
        {
            rand = new Random();
        }

        private static void LoadContentInitialize()
        {
            window = new RenderWindow(new VideoMode(768, 768), "Circle Mix");
            window.SetFramerateLimit(60);
            window.Closed += (s, e) =>
            {
                window.Close();
            };

            Shader shader = new Shader(null, "circlemix.frag");
            shaderState = new RenderStates(shader);
        }

        private static void UpdateDraw(RenderWindow window)
        {
            window.Clear(Color.Black);
            window.DispatchEvents();

            RectangleShape rect = new RectangleShape(new Vector2f(768, 768));
            //TODO: send some params here
            window.Draw(rect, shaderState);

            window.Display();
            if (Keyboard.IsKeyPressed(Keyboard.Key.Escape))
            {
                window.Close();
            }
        }
    }
}