Stop render when iconified

src/window/Window.cpp

@@ -50,6 +50,10 @@ bool Window::isMaximized() {
 	return glfwGetWindowAttrib(window, GLFW_MAXIMIZED);
 }
 
+bool Window::isIconified() {
+    return glfwGetWindowAttrib(window, GLFW_ICONIFIED);
+}
+
 bool Window::isFocused()
 {
 	return glfwGetWindowAttrib(window, GLFW_FOCUSED);

src/window/Window.h

@@ -39,6 +39,7 @@ public:
 	static bool isFullscreen();
 	static bool isMaximized();
 	static bool isFocused();
+    static bool isIconified();
 
 	static void pushScissor(glm::vec4 area);
 	static void popScissor();