add deinit

framework/include/framework.h

@@ -47,6 +47,8 @@ protected:
 
     virtual void display() {}
 
+    virtual void deinit() {}
+
 public:
     GLFWwindow *getWindow();
 

framework/src/framework.cpp

@@ -152,6 +152,8 @@ int App::run() {
     };
     manager.erase(getWindow());
 
+    deinit();
+
     glfwDestroyWindow(_window);
 
     return EXIT_SUCCESS;

glapp/src/main.cpp

@@ -82,6 +82,13 @@ protected:
         swapBuffers();
     }
 
+    void deinit() override {
+        glDeleteBuffers(1, &vertex_buffer);
+        glDeleteProgram(program);
+        glDeleteShader(vertex_shader);
+        glDeleteShader(fragment_shader);
+    }
+
 public:
     GLApp() : App(3, 0) {}
 };