From 0ced6c452f920194956b90e215f4dc238eaca6e1 Mon Sep 17 00:00:00 2001
From: Huseyn Ismayilov <coderloff@gmail.com>
Date: Thu, 22 Aug 2024 20:34:22 +0400
Subject: [PATCH] fix(close #11): Fix window resizing

---
 engine/include/Window.h | 20 +++++++++++++-------
 engine/src/Renderer.cpp | 12 +++++++++++-
 engine/src/Window.cpp   | 24 ++++++------------------
 3 files changed, 30 insertions(+), 26 deletions(-)

diff --git a/engine/include/Window.h b/engine/include/Window.h
index de758b0..10b6aca 100644
--- a/engine/include/Window.h
+++ b/engine/include/Window.h
@@ -6,13 +6,21 @@
 #include <iostream>
 #include <Renderer.h>
 
+struct WindowSize
+{
+    int Width, Height;
+
+    WindowSize(): Width(0), Height(0){}
+    WindowSize(int width, int height): Width(width), Height(height){}
+};
+
 struct WindowData
 {
     std::string Title;
-    int Width, Height;
+    WindowSize Size;
 
-    WindowData(): Title("Ferx Engine"), Width(900), Height(600){}
-    WindowData(const std::string& title, int width, int height): Title(title), Width(width), Height(height){};
+    WindowData(): Title("Ferx Engine"), Size(900, 600){}
+    WindowData(const std::string& title, int width, int height): Title(title), Size(width, height){};
 };
 
 class Window
@@ -24,16 +32,14 @@ public:
 
     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;
+    WindowSize GetSize();
 
-    void Shutdown();
+    void Shutdown() const;
 
 private:
     GLFWwindow* m_Window{};
diff --git a/engine/src/Renderer.cpp b/engine/src/Renderer.cpp
index 2f6c144..deff9e5 100644
--- a/engine/src/Renderer.cpp
+++ b/engine/src/Renderer.cpp
@@ -20,6 +20,15 @@ void Renderer::Init()
 
     LoadShaders();
     SetupBuffers();
+
+    glfwSetWindowSizeCallback(Engine::Get().GetWindow().GetWindow(), [](GLFWwindow* window, int width, int height)
+    {
+        SetupBuffers();
+    });
+    glfwSetFramebufferSizeCallback(Engine::Get().GetWindow().GetWindow(), [](GLFWwindow* window, int width, int height)
+    {
+        glViewport(0, 0, width, height);
+    });
 }
 
 RendererData Renderer::GetData()
@@ -41,7 +50,8 @@ void Renderer::SetupBuffers()
     };
 
     s_Data.m_FBO = new FrameBuffer();
-    s_Data.m_FBO->AttachTexture(Engine::Get().GetWindow().GetWidth(), Engine::Get().GetWindow().GetHeight());
+    WindowSize windowSize = Engine::Get().GetWindow().GetSize();
+    s_Data.m_FBO->AttachTexture(windowSize.Width, windowSize.Height);
 
     s_Data.m_VAO = new VertexArray();
     s_Data.m_VBO = new VertexBuffer();
diff --git a/engine/src/Window.cpp b/engine/src/Window.cpp
index 3c7a9a0..56769ce 100644
--- a/engine/src/Window.cpp
+++ b/engine/src/Window.cpp
@@ -29,7 +29,7 @@ void Window::Init()
     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);
+    m_Window = glfwCreateWindow(m_Data.Size.Width, m_Data.Size.Height, m_Data.Title.c_str(), nullptr, nullptr);
     if (!m_Window) {
         std::cerr << "Failed to create GLFW window" << std::endl;
         glfwTerminate();
@@ -37,8 +37,6 @@ void Window::Init()
     }
 
     glfwMakeContextCurrent(m_Window);
-
-    glfwSetFramebufferSizeCallback(m_Window, FramebufferSizeCallback);
 }
 
 Window Window::Create()
@@ -51,11 +49,6 @@ 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;
@@ -66,18 +59,13 @@ const std::string& Window::GetTitle() const
     return m_Data.Title;
 }
 
-int Window::GetWidth() const
+WindowSize Window::GetSize()
 {
-    return m_Data.Width;
+    glfwGetWindowSize(m_Window, &m_Data.Size.Width, &m_Data.Size.Height);
+    return m_Data.Size;
 }
 
-int Window::GetHeight() const
-{
-    return m_Data.Height;
-}
-
-
-void Window::Shutdown()
+void Window::Shutdown() const
 {
     glfwDestroyWindow(m_Window);
-}
\ No newline at end of file
+}