Added basic ImGui implementation

src/Engine/Rendering/Renderer.cpp

@@ -22,6 +22,8 @@ void Renderer::Initialize()
     m_ScreenQuad = ResourceManager::Load<Model>("Models/Core/ScreenQuad.obj");
     m_UnitQuad = ResourceManager::Load<Model>("Models/Core/UnitQuad.obj");
     m_UnitSphere = ResourceManager::Load<Model>("Models/Core/UnitSphere.obj");
+
+    m_ImGuiRenderPass = new ImGuiRenderPass(this, m_EventBroker);
 }
 
 void Renderer::InitializeWindow()
@@ -127,6 +129,8 @@ void Renderer::Update(double dt)
 {
     m_EventBroker->Process<Renderer>();
     InputUpdate(dt);
+    m_EventBroker->Process<ImGuiRenderPass>();
+    m_ImGuiRenderPass->Update(dt);
 }
 
 void Renderer::Draw(RenderQueueCollection& rq)
@@ -137,6 +141,7 @@ void Renderer::Draw(RenderQueueCollection& rq)
     
     m_DrawScenePass->Draw(rq);
     GLERROR("Renderer::Draw m_DrawScenePass->Draw");
+    m_ImGuiRenderPass->Draw();
 	glfwSwapBuffers(m_Window);
 }