LWJGL in non-main thread #311

		glfwSetErrorCallback(errorCallback = GLFWErrorCallback.createPrint(System.err));
		
		if (!glfwInit()) {
			System.err.println("Couldn't initialize glfw context. Using software renderer.");
			enabled = false;
			reportOpenGLStartupError(null, "glfwInit()");
			return;
		}

		// get monitor's size to set max width / height
		GLFWVidMode videoMode = glfwGetVideoMode(glfwGetPrimaryMonitor());
		maxWidth = videoMode.width();
		maxHeight = videoMode.height();

		// set current heights
		int w = (int) (maxWidth * 0.7);
		int h = (int) (maxHeight * 0.7);
		if (w < 900)
			w = 900;
		if (h < 600)
			h = 600;
		
		Client.clientWidth = width = frameWidth = w;
		Client.clientHeight = height = frameHeight = h;

		// resizable and 
		glfwWindowHint(GLFW_RESIZABLE, 1);
		glfwWindowHint(GLFW_VISIBLE, 0);
		
		window = glfwCreateWindow(width, height, "Emps-World", 0, 0);
		if (window == 0) {
			enabled = false;
			System.err.println("Couldn't initialize glfw window ("+width+"/"+height+"). Using software renderer.");
			return;
		}
		
		// make current window current contest and create GL capabilities
		glfwMakeContextCurrent(window);
		GL.createCapabilities();
		System.out.println("[GraphicsDisplay]: init(): current thread: "+Thread.currentThread().getName());