feat: Create buffer, vertex array and window classes

editor/include/Editor.h

@@ -1,6 +1,7 @@
 #ifndef EDITOR_H
 #define EDITOR_H
 
+#define GLFW_INCLUDE_NONE
 #include "Engine.h"
 #include "UI.h"
 
@@ -10,21 +11,11 @@ public:
     Editor();
     ~Editor();
 
-    void Initialize();
-    void Run();
-    void Shutdown();
-
-    GLFWwindow* GetWindow() const;
+    static void Init();
+    static void Run();
+    static void Shutdown();
 
 private:
-    GLFWwindow* window;
-    Engine engine;
-    UI ui;
-
-    int screenWidth = 800;
-    int screenHeight = 600;
-
-    void InitializeWindow();
     void InitializeImGui();
 };
 

editor/include/UI.h

@@ -1,34 +0,0 @@
-#ifndef UI_H
-#define UI_H
-
-#include <GLFW/glfw3.h>
-#include <imgui.h>
-#include <string>
-
-class UI
-{
-public:
-    UI();
-    ~UI();
-
-    void Initialize(GLFWwindow* window);
-    void Run();
-    void Render();
-    void Shutdown();
-
-    void Print(const std::string& message);
-
-    void ShowMenu();
-    void ShowHierarchy();
-    void ShowProject();
-    void ShowConsole();
-    void ShowScene();
-    void ShowInspector();
-
-private:
-    ImVec4 clearColor = ImVec4(0.0f, 0.0f, 0.0f, 1.00f);
-    ImVec4* styleColors;
-    std::string log;
-};
-
-#endif

editor/resources/imgui.ini

@@ -1,6 +1,6 @@
 [Window][DockSpaceViewport_11111111]
 Pos=0,19
-Size=800,581
+Size=900,581
 Collapsed=0
 
 [Window][Debug##Default]
@@ -9,41 +9,41 @@ Size=400,400
 Collapsed=0
 
 [Window][Hierarchy]
-Pos=602,19
-Size=198,581
+Pos=710,19
+Size=190,581
 Collapsed=0
 DockId=0x00000006,0
 
 [Window][Scene]
-Pos=192,19
-Size=408,428
+Pos=199,19
+Size=509,420
 Collapsed=0
 DockId=0x00000003,0
 
 [Window][Project]
-Pos=192,449
-Size=408,151
+Pos=199,441
+Size=509,159
 Collapsed=0
 DockId=0x00000004,0
 
 [Window][Console]
-Pos=192,449
-Size=408,151
+Pos=199,441
+Size=509,159
 Collapsed=0
 DockId=0x00000004,1
 
 [Window][Inspector]
 Pos=0,19
-Size=190,581
+Size=197,581
 Collapsed=0
 DockId=0x00000001,0
 
 [Docking][Data]
-DockSpace       ID=0x8B93E3BD Window=0xA787BDB4 Pos=0,19 Size=800,581 Split=X
-  DockNode      ID=0x00000005 Parent=0x8B93E3BD SizeRef=600,581 Split=X
-    DockNode    ID=0x00000001 Parent=0x00000005 SizeRef=190,581 Selected=0xE7039252
-    DockNode    ID=0x00000002 Parent=0x00000005 SizeRef=408,581 Split=Y
-      DockNode  ID=0x00000003 Parent=0x00000002 SizeRef=608,428 CentralNode=1 Selected=0xE192E354
-      DockNode  ID=0x00000004 Parent=0x00000002 SizeRef=608,151 Selected=0xD04A4B96
-  DockNode      ID=0x00000006 Parent=0x8B93E3BD SizeRef=198,581 Selected=0x29EABFBD
+DockSpace       ID=0x8B93E3BD Window=0xA787BDB4 Pos=0,19 Size=900,581 Split=X
+  DockNode      ID=0x00000005 Parent=0x8B93E3BD SizeRef=708,581 Split=X
+    DockNode    ID=0x00000001 Parent=0x00000005 SizeRef=197,581 Selected=0xE7039252
+    DockNode    ID=0x00000002 Parent=0x00000005 SizeRef=509,581 Split=Y
+      DockNode  ID=0x00000003 Parent=0x00000002 SizeRef=608,420 CentralNode=1 Selected=0xE192E354
+      DockNode  ID=0x00000004 Parent=0x00000002 SizeRef=608,159 Selected=0xD04A4B96
+  DockNode      ID=0x00000006 Parent=0x8B93E3BD SizeRef=190,581 Selected=0x29EABFBD
 

editor/src/Editor.cpp

@@ -1,60 +1,22 @@
-#include <iostream>
 #include "Editor.h"
-#include "UI.h"
 
-Editor::Editor() : window(nullptr){}
+Editor::Editor()= default;
 
 Editor::~Editor()
 {
     Shutdown();
 }
 
-void Editor::Initialize()
+void Editor::Init()
 {
-    InitializeWindow();
-    engine.Initialize(window);
-    ui.Initialize(window);
-    Run();
+    auto engine = Engine();
+
+    engine.Run();
 }
 
 void Editor::Run() {
-    while (!glfwWindowShouldClose(window)) {
-        glfwPollEvents();
-        ui.Run();
-        engine.Render();
-        ui.Render();
-        glfwSwapBuffers(window);
-    }
 }
 
 void Editor::Shutdown() {
-    engine.Shutdown();
-    ui.Shutdown();
-    glfwDestroyWindow(window);
-    glfwTerminate();
-}
 
-GLFWwindow* Editor::GetWindow() const {
-    return window;
-}
-
-void Editor::InitializeWindow() {
-    if (!glfwInit()) {
-        std::cerr << "Failed to initialize GLFW" << std::endl;
-        return;
-    }
-
-    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
-    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
-    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
-
-    window = glfwCreateWindow(screenWidth, screenHeight, "Editor", nullptr, nullptr);
-    if (!window) {
-        std::cerr << "Failed to create GLFW window" << std::endl;
-        glfwTerminate();
-        return;
-    }
-
-    glfwMakeContextCurrent(window);
-    glfwSetFramebufferSizeCallback(window, Engine::FramebufferSizeCallback);
 }

editor/src/main.cpp

@@ -1,8 +1,8 @@
+#include <iostream>
 #include "Editor.h"
 
 int main(int argc, char** argv)
 {
-    Editor editor;
-
-    editor.Initialize();
+    Editor::Init();
+    std::cout << argv << std::endl;
 }

engine/include/Engine.h

@@ -1,8 +1,11 @@
 #ifndef ENGINE_H
 #define ENGINE_H
 
+#define GLFW_INCLUDE_NONE
 #include <GLFW/glfw3.h>
-#include "Graphics.h"
+#include "Renderer.h"
+#include "Window.h"
+#include "UI.h"
 
 class Engine
 {
@@ -10,14 +13,17 @@ public:
     Engine();
     ~Engine();
 
-    static void FramebufferSizeCallback(GLFWwindow* window, int width, int height);
+    Window& GetWindow() const { return *m_Window; }
 
-    void Initialize(GLFWwindow* window);
+    static Engine& Get() { return *s_Instance; }
+
+    void Run();
     void Render();
     void Shutdown();
 
 private:
-    Graphics graphics;
+    Window* m_Window;
+    static Engine* s_Instance;
 };
 
 #endif

engine/include/FrameBuffer.h

@@ -0,0 +1,29 @@
+#ifndef FRAMEBUFFER_H
+#define FRAMEBUFFER_H
+
+#include <glad/glad.h>
+#include <iostream>
+#include <glm/glm.hpp>
+
+class FrameBuffer
+{
+public:
+    FrameBuffer();
+    FrameBuffer(int width, int height);
+    ~FrameBuffer();
+
+    unsigned int GetFrameTexture() const;
+
+    static FrameBuffer Create(int width, int height);
+
+    void RescaleFrameBuffer(int width, int height) const;
+    void Bind() const;
+    static void Unbind();
+    void Shutdown() const;
+
+private:
+    unsigned int m_FBO{}, m_RBO{};
+    unsigned int m_Texture{};
+};
+
+#endif

engine/include/Graphics.h

@@ -1,28 +0,0 @@
-#ifndef GRAPHICS_H
-#define GRAPHICS_H
-
-#include <GLFW/glfw3.h>
-#include "Shader.h"
-
-class Graphics
-{
-public:
-    Graphics();
-    ~Graphics();
-
-    static void FramebufferSizeCallback(GLFWwindow* window, int width, int height);
-
-    void Initialize(GLFWwindow* window);
-    void Render();
-    void Shutdown();
-
-private:
-    GLFWwindow* window;
-    Shader shader;
-    unsigned int VAO, VBO;
-
-    void LoadShaders();
-    void SetupBuffers();
-};
-
-#endif

engine/include/Renderer.h

@@ -0,0 +1,39 @@
+#ifndef RENDERER_H
+#define RENDERER_H
+
+#define GLFW_INCLUDE_NONE
+#include <GLFW/glfw3.h>
+#include <iostream>
+#include "VertexArray.h"
+#include "VertexBuffer.h"
+#include "FrameBuffer.h"
+#include "Window.h"
+#include "Shader.h"
+#include "UI.h"
+
+struct RendererData
+{
+    VertexArray* m_VAO;
+    VertexBuffer* m_VBO;
+    FrameBuffer* m_FBO;
+    Shader* m_Shader;
+};
+
+class Renderer
+{
+public:
+    Renderer();
+    ~Renderer();
+
+    static void Init();
+    static void Render();
+    static void Shutdown();
+
+    static RendererData s_Data;
+
+private:
+    static void LoadShaders();
+    static void SetupBuffers();
+};
+
+#endif

engine/include/Shader.h

@@ -1,28 +1,36 @@
 #ifndef SHADER_H
 #define SHADER_H
 
+#define GLFW_INCLUDE_NONE
+#include <glad/glad.h>
 #include <glm/glm.hpp>
 #include <glm/gtc/matrix_transform.hpp>
 #include <glm/gtc/type_ptr.hpp>
+#include <string>
+#include <sstream>
+#include <fstream>
+#include <iostream>
 
 class Shader
 {
 public:
-    Shader();
-    Shader(const char* vPath, const char* fPath);
+    Shader() = default;
+    Shader(const std::string& vPath, const std::string& fPath);
     ~Shader();
 
-    void Use();
+    static Shader Create(const std::string& vPath, const std::string& fPath);
 
-    unsigned int GetID();
+    unsigned int GetID() const;
 
+    void Use() const;
+    void Shutdown() const;
     void SetBool(const char* name, bool value) const;
     void SetInt(const char* name, int value) const;
     void SetFloat(const char* name, float value) const;
     void SetMat4(const char* name, glm::mat4 value) const;
 
 private:
-    unsigned int ID;
+    unsigned int m_ID;
 };
 
 #endif

engine/include/UI.h

@@ -0,0 +1,31 @@
+#ifndef UI_H
+#define UI_H
+
+#define GLFW_INCLUDE_NONE
+#include "FrameBuffer.h"
+#include <GLFW/glfw3.h>
+#include <imgui.h>
+#include <string>
+
+class UI
+{
+public:
+    UI();
+    ~UI();
+
+    static void Init(GLFWwindow* window);
+    static void Run();
+    static void Render(const FrameBuffer& sceneBuffer);
+    static void Shutdown();
+
+    static void Print(const std::string& message);
+
+    static void ShowMenu();
+    static void ShowHierarchy();
+    static void ShowProject();
+    static void ShowConsole();
+    static void ShowScene(const FrameBuffer& sceneBuffer);
+    static void ShowInspector();
+};
+
+#endif

engine/include/VertexArray.h

@@ -0,0 +1,22 @@
+#ifndef VERTEXARRAY_H
+#define VERTEXARRAY_H
+
+#include <glad/glad.h>
+
+class VertexArray
+{
+public:
+    VertexArray();
+    ~VertexArray();
+
+    static VertexArray Create();
+
+    void Bind() const;
+    static void Unbind();
+    void Shutdown() const;
+
+private:
+    unsigned int m_VAO{};
+};
+
+#endif

engine/include/VertexBuffer.h

@@ -0,0 +1,23 @@
+#ifndef VERTEXBUFFER_H
+#define VERTEXBUFFER_H
+
+#include <glad/glad.h>
+
+class VertexBuffer
+{
+public:
+    VertexBuffer();
+    ~VertexBuffer();
+
+    static VertexBuffer Create();
+
+    void Bind() const;
+    static void Unbind();
+    void SetData(int size, const void* data) const;
+    void Shutdown() const;
+
+private:
+    unsigned int m_VBO{};
+};
+
+#endif

engine/include/Window.h

@@ -0,0 +1,43 @@
+#ifndef WINDOW_H
+#define WINDOW_H
+
+#include <glad/glad.h>
+#include <GLFW/glfw3.h>
+#include <string>
+#include <iostream>
+
+struct WindowData
+{
+    std::string Title;
+    int Width, Height;
+
+    WindowData(): Title("Ferx Engine"), Width(900), Height(600){}
+    WindowData(const std::string& title, int width, int height): Title(title), Width(width), Height(height){};
+};
+
+class Window
+{
+public:
+    Window();
+    Window(const std::string& title, int width, int height);
+    ~Window();
+
+    static Window Create();
+    static Window Create(const std::string& title, int width, int height);
+    static void FramebufferSizeCallback(GLFWwindow* window, int width, int height);
+
+    void Init();
+
+    GLFWwindow* GetWindow() const;
+    const std::string& GetTitle() const;
+    int GetWidth() const;
+    int GetHeight() const;
+
+    void Shutdown();
+
+private:
+    GLFWwindow* m_Window{};
+    WindowData m_Data;
+};
+
+#endif

engine/src/Engine.cpp

@@ -1,30 +1,38 @@
 #include "Engine.h"
 
-Engine::Engine(){}
+Engine* Engine::s_Instance = nullptr;
+
+Engine::Engine()
+{
+    s_Instance = this;
+
+    m_Window = new Window();
+
+    Renderer::Init();
+    UI::Init(m_Window->GetWindow());
+}
 
 Engine::~Engine()
 {
     Shutdown();
 }
 
-void Engine::FramebufferSizeCallback(GLFWwindow* window, int width, int height)
+void Engine::Run()
 {
-    Graphics::FramebufferSizeCallback(window, width, height);
-}
-
-void Engine::Initialize(GLFWwindow* window)
-{
-    graphics.Initialize(window);
-}
-
-void Engine::Render()
-{
-    graphics.Render();
+    while (!glfwWindowShouldClose(m_Window->GetWindow())) {
+        glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT);
+        UI::Run();
+        Renderer::Render();
+        UI::Render(*Renderer::s_Data.m_FBO);
+        glfwSwapBuffers(m_Window->GetWindow());
+        glfwPollEvents();
+    }
 }
 
 void Engine::Shutdown()
 {
-    graphics.Shutdown();
+    Renderer::Shutdown();
 }
 
 

engine/src/FrameBuffer.cpp

@@ -0,0 +1,76 @@
+#include "FrameBuffer.h"
+
+FrameBuffer::FrameBuffer() = default;
+
+FrameBuffer::FrameBuffer(int width, int height)
+{
+	glGenFramebuffers(1, &m_FBO);
+	glBindFramebuffer(GL_FRAMEBUFFER, m_FBO);
+
+	glGenTextures(1, &m_Texture);
+	glBindTexture(GL_TEXTURE_2D, m_Texture);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, nullptr);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_Texture, 0);
+
+	glGenRenderbuffers(1, &m_RBO);
+	glBindRenderbuffer(GL_RENDERBUFFER, m_RBO);
+	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
+	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_RBO);
+
+	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
+		std::cout << "ERROR::FRAMEBUFFER:: Framebuffer is not complete!" << std::endl;
+
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
+	glBindTexture(GL_TEXTURE_2D, 0);
+	glBindRenderbuffer(GL_RENDERBUFFER, 0);
+}
+
+FrameBuffer::~FrameBuffer()
+{
+	glDeleteFramebuffers(1, &m_FBO);
+	glDeleteTextures(1, &m_Texture);
+	glDeleteRenderbuffers(1, &m_RBO);
+}
+
+unsigned int FrameBuffer::GetFrameTexture() const
+{
+	return m_Texture;
+}
+
+FrameBuffer FrameBuffer::Create(int width, int height)
+{
+	return FrameBuffer{width, height};
+}
+
+void FrameBuffer::Shutdown() const
+{
+	glDeleteBuffers(1, &m_FBO);
+	glDeleteBuffers(1, &m_RBO);
+	glDeleteTextures(1, &m_Texture);
+}
+
+
+void FrameBuffer::RescaleFrameBuffer(int width, int height) const
+{
+	glBindTexture(GL_TEXTURE_2D, m_Texture);
+	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, nullptr);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT0, GL_TEXTURE_2D, m_Texture, 0);
+
+	glBindRenderbuffer(GL_RENDERBUFFER, m_RBO);
+	glRenderbufferStorage(GL_RENDERBUFFER, GL_DEPTH24_STENCIL8, width, height);
+	glFramebufferRenderbuffer(GL_FRAMEBUFFER, GL_DEPTH_STENCIL_ATTACHMENT, GL_RENDERBUFFER, m_RBO);
+}
+
+void FrameBuffer::Bind() const
+{
+	glBindFramebuffer(GL_FRAMEBUFFER, m_FBO);
+}
+
+void FrameBuffer::Unbind()
+{
+	glBindFramebuffer(GL_FRAMEBUFFER, 0);
+}

engine/src/Graphics.cpp

@@ -1,74 +0,0 @@
-#include <glad/glad.h>
-#include <iostream>
-#include "Graphics.h"
-#include "Shader.h"
-
-Graphics::Graphics() : window(nullptr), VAO(0), VBO(0) {}
-
-Graphics::~Graphics()
-{
-    Shutdown();
-}
-
-void Graphics::Initialize(GLFWwindow* window)
-{
-    this->window = window;
-
-    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
-        std::cerr << "Failed to initialize GLAD" << std::endl;
-        return;
-    }
-
-    LoadShaders();
-    SetupBuffers();
-}
-
-void Graphics::LoadShaders()
-{
-    shader = Shader(RESOURCES_PATH"shaders/shader.vs", RESOURCES_PATH"shaders/shader.fs");
-}
-
-void Graphics::SetupBuffers()
-{
-    float vertices[] = {
-         0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f,
-        -0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f,
-         0.0f,  0.5f, 0.0f, 0.0f, 0.0f, 1.0f
-    };
-
-    glGenVertexArrays(1, &VAO);
-    glGenBuffers(1, &VBO);
-
-    glBindVertexArray(VAO);
-
-    glBindBuffer(GL_ARRAY_BUFFER, VBO);
-    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
-
-    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
-    glEnableVertexAttribArray(0);
-
-    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
-    glEnableVertexAttribArray(1);
-
-    glBindBuffer(GL_ARRAY_BUFFER, 0);
-    glBindVertexArray(0);
-}
-
-void Graphics::FramebufferSizeCallback(GLFWwindow* window, int width, int height)
-{
-    glViewport(0, 0, width, height);
-}
-
-void Graphics::Render() {
-    glClear(GL_COLOR_BUFFER_BIT);
-
-    shader.Use();
-    glBindVertexArray(VAO);
-    glDrawArrays(GL_TRIANGLES, 0, 3);
-}
-
-void Graphics::Shutdown()
-{
-    glDeleteVertexArrays(1, &VAO);
-    glDeleteBuffers(1, &VBO);
-}

engine/src/Renderer.cpp

@@ -0,0 +1,74 @@
+#include <glad/glad.h>
+#include "Renderer.h"
+#include "Engine.h"
+
+RendererData Renderer::s_Data;
+
+Renderer::Renderer() = default;
+
+Renderer::~Renderer()
+{
+    Shutdown();
+}
+
+void Renderer::Init()
+{
+    if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
+        std::cerr << "Failed to initialize GLAD" << std::endl;
+        return;
+    }
+
+    LoadShaders();
+    SetupBuffers();
+}
+
+void Renderer::LoadShaders()
+{
+    s_Data.m_Shader = new Shader(RESOURCES_PATH"shaders/shader.vs", RESOURCES_PATH"shaders/shader.fs");
+}
+
+void Renderer::SetupBuffers()
+{
+    float vertices[] = {
+         0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f,
+        -0.5f, -0.5f, 0.0f, 0.0f, 1.0f, 0.0f,
+         0.0f,  0.5f, 0.0f, 0.0f, 0.0f, 1.0f
+    };
+
+    s_Data.m_FBO = new FrameBuffer(FrameBuffer::Create(Engine::Get().GetWindow().GetWidth(), Engine::Get().GetWindow().GetHeight()));
+
+    s_Data.m_VAO = new VertexArray();
+    s_Data.m_VBO = new VertexBuffer();
+
+    s_Data.m_VAO->Bind();
+
+    s_Data.m_VBO->SetData(sizeof(vertices), vertices);
+
+    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)0);
+    glEnableVertexAttribArray(0);
+
+    glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 6 * sizeof(float), (void*)(3 * sizeof(float)));
+    glEnableVertexAttribArray(1);
+
+    VertexArray::Unbind();
+    VertexBuffer::Unbind();
+}
+
+void Renderer::Render() {
+    glClearColor(0.0f, 0.1f, 0.2f, 1.0f);
+    glClear(GL_COLOR_BUFFER_BIT);
+    s_Data.m_FBO->Bind();
+
+    s_Data.m_Shader->Use();
+    s_Data.m_VAO->Bind();
+    glDrawArrays(GL_TRIANGLES, 0, 3);
+    FrameBuffer::Unbind();
+}
+
+void Renderer::Shutdown()
+{
+    s_Data.m_VAO->Shutdown();
+    s_Data.m_VBO->Shutdown();
+    s_Data.m_FBO->Shutdown();
+    s_Data.m_Shader->Shutdown();
+}

engine/src/Shader.cpp

@@ -1,12 +1,6 @@
-#include <glad/glad.h>
-#include <sstream>
-#include <fstream>
-#include <iostream>
 #include "Shader.h"
 
-Shader::Shader(): ID(0){}
-
-Shader::Shader(const char* vPath, const char* fPath)
+Shader::Shader(const std::string& vPath, const std::string& fPath)
 {
     std::string vCode;
     std::string fCode;
@@ -64,15 +58,15 @@ Shader::Shader(const char* vPath, const char* fPath)
         std::cerr << "ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n" << infoLog << std::endl;
     };
 
-    ID = glCreateProgram();
-    glAttachShader(ID, vertex);
-    glAttachShader(ID, fragment);
-    glLinkProgram(ID);
+    m_ID = glCreateProgram();
+    glAttachShader(m_ID, vertex);
+    glAttachShader(m_ID, fragment);
+    glLinkProgram(m_ID);
 
-    glGetProgramiv(ID, GL_LINK_STATUS, &success);
+    glGetProgramiv(m_ID, GL_LINK_STATUS, &success);
     if(!success)
     {
-        glGetProgramInfoLog(ID, 512, nullptr, infoLog);
+        glGetProgramInfoLog(m_ID, 512, nullptr, infoLog);
         std::cerr << "ERROR::SHADER::PROGRAM::LINKING_FAILED\n" << infoLog << std::endl;
     }
 
@@ -80,31 +74,44 @@ Shader::Shader(const char* vPath, const char* fPath)
     glDeleteShader(fragment);
 }
 
-Shader::~Shader(){};
-
-void Shader::Use()
+Shader::~Shader()
 {
-    glUseProgram(ID);
+    glDeleteProgram(m_ID);
 }
 
-unsigned int Shader::GetID()
+Shader Shader::Create(const std::string& vPath, const std::string& fPath)
 {
-    return ID;
+    return Shader{vPath, fPath};
+}
+
+void Shader::Use() const
+{
+    glUseProgram(m_ID);
+}
+
+void Shader::Shutdown() const
+{
+    glDeleteProgram(m_ID);
+}
+
+unsigned int Shader::GetID() const
+{
+    return m_ID;
 }
 
 void Shader::SetBool(const char* name, bool value) const
 {
-    glUniform1i(glGetUniformLocation(ID, name), (int)value);
+    glUniform1i(glGetUniformLocation(m_ID, name), (int)value);
 }
 void Shader::SetInt(const char* name, int value) const
 {
-    glUniform1i(glGetUniformLocation(ID, name), value);
+    glUniform1i(glGetUniformLocation(m_ID, name), value);
 }
 void Shader::SetFloat(const char* name, float value) const
 {
-    glUniform1f(glGetUniformLocation(ID, name), value);
+    glUniform1f(glGetUniformLocation(m_ID, name), value);
 }
 void Shader::SetMat4(const char* name, glm::mat4 value) const
 {
-    glUniformMatrix4fv(glGetUniformLocation(ID, name), 1, GL_FALSE, glm::value_ptr(value));
+    glUniformMatrix4fv(glGetUniformLocation(m_ID, name), 1, GL_FALSE, glm::value_ptr(value));
 }

engine/src/UI.cpp

@@ -2,20 +2,28 @@
 #include <imgui_impl_glfw.h>
 #include <imgui_impl_opengl3.h>
 #include "UI.h"
+#include "FrameBuffer.h"
+#include "Window.h"
 
-UI::UI(): styleColors(nullptr){}
+static ImVec4 m_ClearColor;
+static ImVec4* m_StyleColors;
+static std::string m_Log;
 
-UI::~UI(){}
+UI::UI()= default;
 
-void UI::Initialize(GLFWwindow* window)
+UI::~UI()= default;
+
+void UI::Init(GLFWwindow* window)
 {
+    m_ClearColor = ImVec4(0.0f, 0.0f, 0.0f, 1.00f);
+
     IMGUI_CHECKVERSION();
     ImGui::CreateContext();
     ImGuiIO& io = ImGui::GetIO(); (void)io;
     io.ConfigFlags |= ImGuiConfigFlags_DockingEnable;
 
     ImGuiStyle& style = ImGui::GetStyle();
-    styleColors = style.Colors;
+    m_StyleColors = style.Colors;
     ImGui::StyleColorsDark();
 
     // Setup Platform/Renderer backends
@@ -29,17 +37,17 @@ void UI::Run()
     ImGui_ImplGlfw_NewFrame();
     ImGui::NewFrame();
     ImGui::DockSpaceOverViewport(ImGui::GetMainViewport());
-    styleColors[ImGuiCol_DockingEmptyBg] = clearColor;
+    m_StyleColors[ImGuiCol_DockingEmptyBg] = m_ClearColor;
 }
 
-void UI::Render()
+void UI::Render(const FrameBuffer& sceneBuffer)
 {
     ShowConsole();
     ShowHierarchy();
     ShowInspector();
     ShowMenu();
     ShowProject();
-    ShowScene();
+    ShowScene(sceneBuffer);
 
     ImGui::Render();
     ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
@@ -54,7 +62,7 @@ void UI::Shutdown()
 
 void UI::Print(const std::string& message)
 {
-    log = message;
+    m_Log = message;
 }
 
 void UI::ShowConsole(){
@@ -72,7 +80,7 @@ void UI::ShowConsole(){
 
     ImGui::Text("Application average %.3f ms/frame (%.1f FPS)", 1000.0f / ImGui::GetIO().Framerate, ImGui::GetIO().Framerate);
 
-    ImGui::Text("%s", log.c_str());
+    ImGui::Text("%s", m_Log.c_str());
 
     ImGui::End();
 }
@@ -94,7 +102,7 @@ void UI::ShowInspector()
     ImGui::Text("This is some useful text.");
 
     ImGui::SliderFloat("float", &f, 0.0f, 1.0f);
-    ImGui::ColorEdit3("clear color", (float*)&clearColor);
+    ImGui::ColorEdit3("clear color", (float*)&m_ClearColor);
 
     if (ImGui::Button("Button"))
         counter++;
@@ -124,10 +132,20 @@ void UI::ShowProject()
     ImGui::End();
 }
 
-void UI::ShowScene()
+void UI::ShowScene(const FrameBuffer& sceneBuffer)
 {
     ImGui::Begin("Scene");
+    {
+        ImGui::BeginChild("GameRender");
 
+        ImGui::Image(
+            (ImTextureID)sceneBuffer.GetFrameTexture(),
+            ImGui::GetContentRegionAvail(),
+            ImVec2(0, 1),
+            ImVec2(1, 0)
+        );
+    }
+    ImGui::EndChild();
     ImGui::End();
 }
 

engine/src/VertexArray.cpp

@@ -0,0 +1,31 @@
+#include "VertexArray.h"
+
+VertexArray::VertexArray()
+{
+    glGenVertexArrays(1, &m_VAO);
+}
+
+VertexArray::~VertexArray()
+{
+    Shutdown();
+}
+
+VertexArray VertexArray::Create()
+{
+    return VertexArray{};
+}
+
+void VertexArray::Bind() const
+{
+    glBindVertexArray(m_VAO);
+}
+
+void VertexArray::Unbind()
+{
+    glBindVertexArray(0);
+}
+
+void VertexArray::Shutdown() const
+{
+    glDeleteVertexArrays(1, &m_VAO);
+}

engine/src/VertexBuffer.cpp

@@ -0,0 +1,36 @@
+#include "VertexBuffer.h"
+
+VertexBuffer::VertexBuffer()
+{
+    glGenBuffers(1, &m_VBO);
+}
+
+VertexBuffer::~VertexBuffer()
+{
+    Shutdown();
+}
+
+VertexBuffer VertexBuffer::Create()
+{
+    return VertexBuffer{};
+}
+
+void VertexBuffer::Bind() const
+{
+    glBindBuffer(GL_ARRAY_BUFFER, m_VBO);
+}
+void VertexBuffer::Unbind()
+{
+    glBindBuffer(GL_ARRAY_BUFFER, 0);
+}
+
+void VertexBuffer::SetData(int size, const void* data) const
+{
+    Bind();
+    glBufferData(GL_ARRAY_BUFFER, size, data, GL_STATIC_DRAW);
+}
+
+void VertexBuffer::Shutdown() const
+{
+    glDeleteBuffers(1, &m_VBO);
+}

engine/src/Window.cpp

@@ -0,0 +1,83 @@
+#include "Window.h"
+
+Window::Window()
+{
+    Init();
+}
+
+Window::Window(const std::string& title, int width, int height)
+{
+    m_Data = WindowData{title, width, height};
+    Init();
+}
+
+Window::~Window()
+{
+    Shutdown();
+}
+
+void Window::Init()
+{
+    if (!glfwInit()) {
+        std::cerr << "Failed to initialize GLFW" << std::endl;
+        return;
+    }
+
+    std::cout << "GLFW Initialized" << std::endl;
+
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
+    m_Window = glfwCreateWindow(m_Data.Width, m_Data.Height, m_Data.Title.c_str(), nullptr, nullptr);
+    if (!m_Window) {
+        std::cerr << "Failed to create GLFW window" << std::endl;
+        glfwTerminate();
+        return;
+    }
+
+    glfwMakeContextCurrent(m_Window);
+
+    glfwSetFramebufferSizeCallback(m_Window, FramebufferSizeCallback);
+}
+
+Window Window::Create()
+{
+    return Window{};
+}
+
+Window Window::Create(const std::string& title, int width, int height)
+{
+    return Window{title, width, height};
+}
+
+void Window::FramebufferSizeCallback(GLFWwindow* window, int width, int height)
+{
+    glViewport(0, 0, width, height);
+}
+
+GLFWwindow* Window::GetWindow() const
+{
+    return m_Window;
+}
+
+const std::string& Window::GetTitle() const
+{
+    return m_Data.Title;
+}
+
+int Window::GetWidth() const
+{
+    return m_Data.Width;
+}
+
+int Window::GetHeight() const
+{
+    return m_Data.Height;
+}
+
+
+void Window::Shutdown()
+{
+    glfwDestroyWindow(m_Window);
+}