Added Bounding Boxes, And Added CPU-Culling

assets/shaders/Line.frag

@@ -0,0 +1,6 @@
+#version 330 core
+out vec4 FragColor;
+uniform vec4 uColor;
+void main() {
+  FragColor = uColor;
+}

assets/shaders/Line.vert

@@ -0,0 +1,8 @@
+#version 330 core
+layout (location = 0) in vec3 aPos;
+uniform mat4 uMVP;
+void main() {
+  gl_Position = uMVP * vec4(aPos, 1.0);
+}
+
+

imgui.ini

@@ -80,8 +80,8 @@ Collapsed=0
 DockId=0x0000001F,0
 
 [Window][Performance##performance]
-Pos=8,702
+Pos=8,581
-Size=335,467
+Size=335,588
 Collapsed=0
 DockId=0x0000001C,0
 
@@ -105,7 +105,7 @@ DockId=0x0000000F,0
 
 [Window][Scene Window##SceneWindow]
 Pos=8,28
-Size=335,672
+Size=335,551
 Collapsed=0
 DockId=0x0000001B,0
 
@@ -173,8 +173,8 @@ Column 3  Weight=0.6950
 DockSpace                         ID=0x14621557 Window=0x3DA2F1DE Pos=8,51 Size=1904,1141 Split=X Selected=0xF7365A5A
   DockNode                        ID=0x00000020 Parent=0x14621557 SizeRef=884,684 Split=X
     DockNode                      ID=0x00000013 Parent=0x00000020 SizeRef=335,1142 Split=Y Selected=0x818D04BB
-      DockNode                    ID=0x0000001B Parent=0x00000013 SizeRef=264,672 HiddenTabBar=1 Selected=0x1D5D92B6
+      DockNode                    ID=0x0000001B Parent=0x00000013 SizeRef=264,551 HiddenTabBar=1 Selected=0x1D5D92B6
-      DockNode                    ID=0x0000001C Parent=0x00000013 SizeRef=264,467 HiddenTabBar=1 Selected=0x818D04BB
+      DockNode                    ID=0x0000001C Parent=0x00000013 SizeRef=264,588 HiddenTabBar=1 Selected=0x818D04BB
     DockNode                      ID=0x00000014 Parent=0x00000020 SizeRef=547,1142 Split=X
       DockNode                    ID=0x00000015 Parent=0x00000014 SizeRef=1158,1142 Split=X
         DockNode                  ID=0x00000011 Parent=0x00000015 SizeRef=265,1142 Selected=0x1D5D92B6

src/Engine.cpp

@@ -36,6 +36,7 @@
 #include "Engine/InputManager.h"
 #include "Engine/ScopedTimer.h"
 #include "Engine/Profiler.h"
+#include "Engine/Settings.h"
 
 // #define YAML_CPP_STATIC_DEFINE
 #include <yaml-cpp/yaml.h>
@@ -50,6 +51,7 @@ SceneManager g_SceneManager;
 
 InputManager g_InputManager;
 
+Settings g_SettingsManager;
 
 std::vector<std::shared_ptr<GameObject>> g_GameObjects;
 
@@ -58,6 +60,8 @@ std::shared_ptr<CameraComponent> g_RuntimeCameraObject;
 int g_GPU_Triangles_drawn_to_screen = 0;
 int g_GPU_Draw_Calls = 0;
 
+bool DrawBBBO;
+
 GameObject *g_SelectedObject; // Pointer to the currently selected object
 
 int m_GameRunning = 0;
@@ -65,6 +69,10 @@ int m_GameRunning = 0;
 bool MyEngine::Init(int width, int height, const std::string &title)
 {
     DEBUG_PRINT("[START] Engine Init");
+
+    g_SettingsManager.S_LineColor = glm::vec4(1.0f, 0.27058823529f, 0.0f, 1.0f);
+
+
     // ------------------------------------------
     // 1) Initialize GLFW
     // ------------------------------------------
@@ -170,6 +178,8 @@ bool MyEngine::Init(int width, int height, const std::string &title)
     m_FirstTickGameRunning = true;
     m_showProfiler = true;
 
+    DrawBBBO = false;
+
     g_LoggerWindow = m_LoggerWindow.get();
 
     // Optionally, call 'onInit' Lua function
@@ -206,8 +216,6 @@ void MyEngine::Run()
             glfwPollEvents();
         }
 
-        
-
         {
             SCOPE_TIMER("InputManagerUpdate");
             g_InputManager.Update(m_Window);
@@ -432,6 +440,22 @@ void MyEngine::ShowDockSpace()
             ImGui::Checkbox("Show Profiler", &m_showProfiler); // Add a checkbox to toggle the profiler
             ImGui::EndMenu();
         }
+        if (ImGui::BeginMenu("Settings"))
+        {
+            // A checkbox to enable/disable bounding boxes
+            ImGui::Checkbox("Show Box's", &DrawBBBO);
+
+            // On the same line, we place a small color edit widget
+            ImGui::SameLine();
+            ImGui::ColorEdit4("Box Color",
+                              reinterpret_cast<float *>(&g_SettingsManager.S_LineColor),
+                              ImGuiColorEditFlags_NoInputs | ImGuiColorEditFlags_NoLabel);
+            // Explanation of Flags:
+            //  - ImGuiColorEditFlags_NoInputs hides numeric RGBA input fields
+            //  - ImGuiColorEditFlags_NoLabel hides the default label, since we already have "Box Color"
+            ImGui::EndMenu();
+        }
+
         if (ImGui::BeginMenu("Engine"))
         {
 

src/Engine/AssetManager.cpp

@@ -520,6 +520,7 @@ Model *LoadModelFromList(const std::string &path)
 
         // Initialize OpenGL buffers for the submesh
         submesh.Initialize();
+        
     }
 
     if (materialToSubmesh.empty())

src/Engine/AssetManager.h

@@ -82,10 +82,31 @@ struct Submesh
     std::vector<unsigned int> indices;
     std::vector<Texture> textures;
     GLuint vao = 0, vbo = 0, ebo = 0;
+    unsigned int bboxVAO, bboxVBO;
+    GLsizei bboxVertexCount;
+
+    glm::vec3 minExtents;
+    glm::vec3 maxExtents;
 
     // Initialize OpenGL buffers for the submesh
     void Initialize()
     {
+        glm::vec3 minExtents(FLT_MAX);
+        glm::vec3 maxExtents(-FLT_MAX);
+        for (auto &v : vertices)
+        {
+            minExtents.x = std::min(minExtents.x, v.position[0]);
+            minExtents.y = std::min(minExtents.y, v.position[1]);
+            minExtents.z = std::min(minExtents.z, v.position[2]);
+
+            maxExtents.x = std::max(maxExtents.x, v.position[0]);
+            maxExtents.y = std::max(maxExtents.y, v.position[1]);
+            maxExtents.z = std::max(maxExtents.z, v.position[2]);
+        }
+
+        // Store in the submesh
+        this->minExtents = minExtents;
+        this->maxExtents = maxExtents;
         glGenVertexArrays(1, &vao);
         glGenBuffers(1, &vbo);
         glGenBuffers(1, &ebo);
@@ -109,6 +130,58 @@ struct Submesh
         glVertexAttribPointer(2, 3, GL_FLOAT, GL_FALSE, sizeof(Vertex), (void *)(5 * sizeof(float)));
 
         glBindVertexArray(0);
+
+        std::vector<glm::vec3> bboxLines = {
+            // bottom face
+            {minExtents.x, minExtents.y, minExtents.z},
+            {maxExtents.x, minExtents.y, minExtents.z},
+            {maxExtents.x, minExtents.y, minExtents.z},
+            {maxExtents.x, minExtents.y, maxExtents.z},
+            {maxExtents.x, minExtents.y, maxExtents.z},
+            {minExtents.x, minExtents.y, maxExtents.z},
+            {minExtents.x, minExtents.y, maxExtents.z},
+            {minExtents.x, minExtents.y, minExtents.z},
+            // top face
+            {minExtents.x, maxExtents.y, minExtents.z},
+            {maxExtents.x, maxExtents.y, minExtents.z},
+            {maxExtents.x, maxExtents.y, minExtents.z},
+            {maxExtents.x, maxExtents.y, maxExtents.z},
+            {maxExtents.x, maxExtents.y, maxExtents.z},
+            {minExtents.x, maxExtents.y, maxExtents.z},
+            {minExtents.x, maxExtents.y, maxExtents.z},
+            {minExtents.x, maxExtents.y, minExtents.z},
+            // vertical edges
+            {minExtents.x, minExtents.y, minExtents.z},
+            {minExtents.x, maxExtents.y, minExtents.z},
+            {maxExtents.x, minExtents.y, minExtents.z},
+            {maxExtents.x, maxExtents.y, minExtents.z},
+            {maxExtents.x, minExtents.y, maxExtents.z},
+            {maxExtents.x, maxExtents.y, maxExtents.z},
+            {minExtents.x, minExtents.y, maxExtents.z},
+            {minExtents.x, maxExtents.y, maxExtents.z}};
+
+        glGenVertexArrays(1, &bboxVAO);
+        glGenBuffers(1, &bboxVBO);
+
+        glBindVertexArray(bboxVAO);
+        glBindBuffer(GL_ARRAY_BUFFER, bboxVBO);
+        glBufferData(
+            GL_ARRAY_BUFFER,
+            bboxLines.size() * sizeof(glm::vec3),
+            bboxLines.data(),
+            GL_STATIC_DRAW);
+
+        glEnableVertexAttribArray(0);
+        glVertexAttribPointer(
+            0, 3, GL_FLOAT, GL_FALSE,
+            sizeof(glm::vec3), (void *)0);
+
+        glBindVertexArray(0);
+
+        bboxVAO = bboxVAO;
+        bboxVBO = bboxVBO;
+        bboxVertexCount = (GLsizei)bboxLines.size();
+
     }
 
     // Render the submesh
@@ -200,9 +273,9 @@ public:
             // Debug: Log the variant type
             if (std::holds_alternative<std::shared_ptr<T>>(it->second))
             {
-                #ifdef DEBUG
+#ifdef DEBUG
                 DebugAssetMap();
-                #endif
+#endif
                 std::cout << "[AssetManager] Retrieved asset from cache: " << key << std::endl;
                 return std::get<std::shared_ptr<T>>(it->second);
             }

src/Engine/Settings.h

@@ -0,0 +1,6 @@
+#include "imgui.h"
+#include <glm/gtc/matrix_transform.hpp>
+
+struct Settings {
+    glm::vec4  S_LineColor;
+};

src/Rendering/Shader.cpp

@@ -152,6 +152,12 @@ void Shader::SetVec3(const std::string &name, const glm::vec3 &value) const
     glUniform3fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
 }
 
+
+void Shader::SetVec4(const std::string &name, const glm::vec4 &value) const
+{
+    glUseProgram(ID); // Ensure the shader program is active
+    glUniform4fv(glGetUniformLocation(ID, name.c_str()), 1, &value[0]);
+}
 void Shader::SetSampler2D(const std::string &name, int textureUnit) const
 {
     glUseProgram(ID); // Ensure the shader program is active

src/Rendering/Shader.h

@@ -26,6 +26,8 @@ public:
     void SetMat4(const std::string &name, const glm::mat4 &mat) const; // For setting 4x4 matrices
     void SetSampler2D(const std::string &name, int textureUnit) const;
     void SetVec3(const std::string &name, const glm::vec3 &value) const;
+    void SetVec4(const std::string &name, const glm::vec4 &value) const;
+
 
 private:
     // Caching uniform locations for performance

src/Windows/PerformanceWindow.cpp

@@ -1,6 +1,7 @@
 #include "PerformanceWindow.h"
 #include "imgui.h"
-#include <algorithm> // for std::max_element, etc.
+#include <algorithm> // for std::max
+#include <float.h>   // for FLT_MAX
 #include "Engine/ThemeManager.h"
 #include "Engine/ScopedTimer.h"
 
@@ -8,46 +9,44 @@ extern int LoadedAssets;
 extern int g_GPU_Triangles_drawn_to_screen;
 extern int g_GPU_Draw_Calls;
 
-
 const char *polygonModeOptions[] = {"Fill", "Wireframe", "Points"};
-const int numPolygonModes = sizeof(polygonModeOptions) / sizeof(polygonModeOptions[0]);
+static int polygonMode = 0;
-
-int polygonMode = 0;
 
 // Initialize static members
 int PerformanceWindow::m_OpenGLCallCount = 0;
 int PerformanceWindow::m_TriangleCount = 0;
 
 // We'll store up to 60 data points for each stat.
-static float s_FpsHistory[60] = {0.0f};
+static float s_FpsHistory[60]      = {0.0f};
-static float s_MsHistory[60] = {0.0f};
+static float s_MsHistory[60]       = {0.0f};
-static float s_CallsHistory[60] = {0.0f};
+static float s_CallsHistory[60]    = {0.0f};
 static float s_TriangleHistory[60] = {0.0f};
 
 // Current dynamic max scale for FPS and ms
 static float s_FpsScale = 120.0f; // default starting scale for FPS
-static float s_MsScale = 25.0f;   // default starting scale for ms
+static float s_MsScale  = 25.0f;  // default starting scale for ms
 
-// This function shifts the old values left and appends a new value at the end.
+// Push new value into history, shifting old values left
-static void PushValueToHistory(float *historyArray, int historySize, float newValue)
+static void PushValueToHistory(float* historyArray, int historySize, float newValue)
 {
     for (int i = 0; i < historySize - 1; i++)
+    {
         historyArray[i] = historyArray[i + 1];
+    }
     historyArray[historySize - 1] = newValue;
 }
 
 // We'll track when we last pushed data to our history.
 static double s_LastPushTime = 0.0;
-
 // We'll also track when we last updated the scale
 static double s_LastScaleUpdate = 0.0;
 
-// Update counters from the outside
 void PerformanceWindow::UpdatePerformanceStats(int newCallCount, int newTriangleCount)
 {
     m_OpenGLCallCount = newCallCount;
-    m_TriangleCount = newTriangleCount;
+    m_TriangleCount   = newTriangleCount;
 
+    // Reset GPU counters each frame, or each time you show
     g_GPU_Triangles_drawn_to_screen = 0;
     g_GPU_Draw_Calls                = 0;
 }
@@ -59,7 +58,7 @@ void PerformanceWindow::Show(float fps, float ms)
     // 1) Get current time from ImGui's internal clock
     double currentTime = ImGui::GetTime();
 
-    // 2) If at least 0.05s has passed, push new data (about 20 updates per second)
+    // 2) If at least 0.05s has passed, push new data (~20 times a second)
     if ((currentTime - s_LastPushTime) >= 0.05)
     {
         s_LastPushTime = currentTime;
@@ -71,141 +70,234 @@ void PerformanceWindow::Show(float fps, float ms)
         PushValueToHistory(s_TriangleHistory, 60, (float)m_TriangleCount);
     }
 
-    // 3) Every 1 second, recalculate the max scale for FPS and ms
+    // We'll calculate a fallback max for calls
+    static float callsMax = 300.0f;
+
+    // 3) Every 1 second, recalculate the max scale for FPS, ms, and calls
     if ((currentTime - s_LastScaleUpdate) >= 1.0)
     {
         s_LastScaleUpdate = currentTime;
 
-        // Find the maximum in s_FpsHistory
+        // Recompute s_FpsScale
         float maxFps = 0.0f;
         for (int i = 0; i < 60; i++)
-        {
+            maxFps = std::max(maxFps, s_FpsHistory[i]);
-            if (s_FpsHistory[i] > maxFps)
+        maxFps = std::max(1.0f, maxFps * 1.15f); // add ~15% headroom
-                maxFps = s_FpsHistory[i];
-        }
-        // Scale it by +15%, ensure it's not below 1.0
-        maxFps *= 1.15f;
-        if (maxFps < 1.0f)
-            maxFps = 1.0f;
         s_FpsScale = maxFps;
 
-        // Find the maximum in s_MsHistory
+        // Recompute s_MsScale
         float maxMs = 0.0f;
         for (int i = 0; i < 60; i++)
-        {
+            maxMs = std::max(maxMs, s_MsHistory[i]);
-            if (s_MsHistory[i] > maxMs)
+        maxMs = std::max(1.0f, maxMs * 1.15f);
-                maxMs = s_MsHistory[i];
-        }
-        // Scale it by +15%, ensure it's not below 1.0
-        maxMs *= 1.15f;
-        if (maxMs < 1.0f)
-            maxMs = 1.0f;
         s_MsScale = maxMs;
+
+        // Recompute callsMax
+        float localMax = 0.0f;
+        for (int i = 0; i < 60; i++)
+            localMax = std::max(localMax, s_CallsHistory[i]);
+        if (localMax > 0.0f)
+            callsMax = localMax * 1.2f; // 20% headroom
+        else
+            callsMax = 300.0f;         // default
     }
 
     // Optional style adjustments
     ImGui::PushStyleVar(ImGuiStyleVar_WindowPadding, ImVec2(10, 10));
+
+    // Optionally make the window auto-resize or set constraints:
+    // ImGui::SetNextWindowSizeConstraints(ImVec2(350, 300), ImVec2(FLT_MAX, FLT_MAX));
+    // ImGui::Begin("Performance##performance", nullptr, ImGuiWindowFlags_AlwaysAutoResize);
+
     ImGui::Begin("Performance##performance");
 
-    // Colored header
+    // A color-coded main header
     ImGui::TextColored(ImVec4(1.0f, 0.8f, 0.2f, 1.0f), "Performance Stats");
     ImGui::Separator();
+    ImGui::Spacing();
 
-    // Show current FPS/ms
+    // Show current FPS / ms in color
-    ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.4f, 1.0f), "FPS: %.1f", fps);
-    ImGui::SameLine();
-    ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.8f, 1.0f), "| ms: %.3f", ms);
-
-    // Graphs for FPS + MS
-    // min = 0, max = s_FpsScale or s_MsScale
-    ImGui::PlotLines("FPS",
-                     s_FpsHistory,
-                     IM_ARRAYSIZE(s_FpsHistory),
-                     0,
-                     nullptr,
-                     0.0f,
-                     s_FpsScale,
-                     ImVec2(0, 60));
-
-    ImGui::PlotHistogram("ms/frame",
-                         s_MsHistory,
-                         IM_ARRAYSIZE(s_MsHistory),
-                         0,
-                         nullptr,
-                         0.0f,
-                         s_MsScale,
-                         ImVec2(0, 60));
-
-    ImGui::Separator();
-
-    // Show OpenGL calls + Triangles
-    ImGui::Text("OpenGL Calls: %d", m_OpenGLCallCount);
-    ImGui::PlotLines("GL Calls",
-                     s_CallsHistory,
-                     IM_ARRAYSIZE(s_CallsHistory),
-                     0,
-                     nullptr,
-                     0.0f,
-                     300.0f,
-                     ImVec2(0, 50));
-
-    ImGui::Text("Indices: %d", m_TriangleCount);
-    ImGui::PlotHistogram("Indices",
-                         s_TriangleHistory,
-                         IM_ARRAYSIZE(s_TriangleHistory),
-                         0,
-                         nullptr,
-                         0.0f,
-                         m_TriangleCount * 2.5,
-                         ImVec2(0, 50));
-
-    ImGui::Separator();
-
-    // Show asset count
-    ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.4f, 1.0f), "Assets: %d", LoadedAssets);
-
-    ImGui::Separator();
-
-    const char *options[] = {"Bootsrap", "Duck Red", "Windark", "Deep Dark", "Tesseract Black"};
-    static int current_option = -1; // No selection initially
-
-    const char *preview_value = (current_option >= 0 && current_option < 3) ? options[current_option] : "Select an option";
-    if (ImGui::BeginCombo("Theme", preview_value))
     {
-        for (int n = 0; n < IM_ARRAYSIZE(options); n++)
+        // Line 1: FPS (green) + MS (teal)
+        ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.4f, 1.0f), "FPS: %.1f", fps);
+        ImGui::SameLine();
+        ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.8f, 1.0f), "| ms: %.3f", ms);
+    }
+
+    // Collapsible header for the performance graphs
+    if (ImGui::CollapsingHeader("Performance Graphs", ImGuiTreeNodeFlags_DefaultOpen))
+    {
+        ImGui::Spacing();
+
+        // --------- FPS & MS side by side ----------
+        ImGui::BeginGroup(); // left group
         {
-            bool is_selected = (current_option == n);
+            ImGui::Text("FPS");
-            if (ImGui::Selectable(options[n], is_selected))
+            ImGui::PushStyleColor(ImGuiCol_PlotLines,        IM_COL32(0, 255, 0, 255));   // green
+            ImGui::PushStyleColor(ImGuiCol_PlotLinesHovered, IM_COL32(255, 0, 0, 255));   // red on hover
+
+            ImGui::PlotLines("##FPS",      // hidden label
+                             s_FpsHistory, IM_ARRAYSIZE(s_FpsHistory),
+                             0,            // offset
+                             nullptr,      // overlay
+                             0.0f,
+                             s_FpsScale,
+                             ImVec2(150, 60));
+
+            if (ImGui::IsItemHovered())
             {
-                current_option = n;          // Update current option
+                ImGui::BeginTooltip();
-                ThemeManager_ChangeTheme(n); // Call the function with the selected option
+                ImGui::Text("Frames per second over time");
+                ImGui::EndTooltip();
             }
-            // Set the initial focus when opening the combo (optional)
+
-            if (is_selected)
+            ImGui::PopStyleColor(2);
-                ImGui::SetItemDefaultFocus();
         }
-        ImGui::EndCombo();
+        ImGui::EndGroup();
-    }
+
-    if (ImGui::Combo("Polygon Mode", &polygonMode, polygonModeOptions, numPolygonModes))
+        ImGui::SameLine();
-    {
+
-        switch (polygonMode)
+        ImGui::BeginGroup(); // right group
         {
-        case 0:
+            ImGui::Text("ms/frame");
-            glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+            ImGui::PlotHistogram("##ms/frame",
-            break;
+                                 s_MsHistory,
-        case 1:
+                                 IM_ARRAYSIZE(s_MsHistory),
-            glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+                                 0,
-            break;
+                                 nullptr,
-        case 2:
+                                 0.0f,
-            glPolygonMode(GL_FRONT_AND_BACK, GL_POINT);
+                                 s_MsScale,
-            break;
+                                 ImVec2(150, 60));
-        default:
+
-            glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+            if (ImGui::IsItemHovered())
-            break;
+            {
+                ImGui::BeginTooltip();
+                ImGui::Text("Frame time in milliseconds");
+                ImGui::EndTooltip();
+            }
+        }
+        ImGui::EndGroup();
+
+        ImGui::Spacing();
+        ImGui::Separator();
+        ImGui::Spacing();
+
+        // --------- OpenGL Calls & Indices -----------
+        // 1) GL Calls
+        ImGui::Text("OpenGL Calls: %d", m_OpenGLCallCount);
+
+        ImGui::PlotLines("##GL Calls",
+                         s_CallsHistory,
+                         IM_ARRAYSIZE(s_CallsHistory),
+                         0,       // offset
+                         nullptr, // overlay text
+                         0.0f,
+                         callsMax,
+                         ImVec2(-1, 50)); // auto-fill width, fixed height=50
+
+        if (ImGui::IsItemHovered())
+        {
+            ImGui::BeginTooltip();
+            ImGui::Text("Number of GL draw calls per frame");
+            ImGui::EndTooltip();
+        }
+
+        ImGui::Spacing();
+
+        // 2) Indices
+        ImGui::Text("Indices: %d", m_TriangleCount);
+
+        // For Indices, we use a histogram. We could also do dynamic range like callsMax.
+        float indexHistMax = std::max(1.0f, (float)m_TriangleCount * 2.5f);
+
+        ImGui::PlotHistogram("##Indices",
+                             s_TriangleHistory,
+                             IM_ARRAYSIZE(s_TriangleHistory),
+                             0,
+                             nullptr,
+                             0.0f,
+                             indexHistMax,
+                             ImVec2(-1, 50)); // auto-size width, height=50
+
+        if (ImGui::IsItemHovered())
+        {
+            ImGui::BeginTooltip();
+            ImGui::Text("Number of indices being rendered per frame");
+            ImGui::EndTooltip();
         }
     }
 
-    ImGui::End();
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
 
+    // -------------- Asset Count --------------
+    {
+        ImGui::Text("Loaded Assets: ");
+        ImGui::SameLine();
+        ImGui::TextColored(ImVec4(0.4f, 1.0f, 0.4f, 1.0f), "%d", LoadedAssets);
+    }
+
+    ImGui::Spacing();
+    ImGui::Separator();
+    ImGui::Spacing();
+
+    // -------------- Theme Combo Box --------------
+    {
+        const char* options[] = {"Bootstrap", "Duck Red", "Windark", "Deep Dark", "Tesseract Black"};
+        static int current_option = -1; 
+        const char* preview_value = (current_option >= 0 && current_option < IM_ARRAYSIZE(options))
+                                        ? options[current_option]
+                                        : "Select an option";
+
+        ImGui::Text("Theme: ");
+        ImGui::SameLine();
+        if (ImGui::BeginCombo("##ThemeCombo", preview_value))
+        {
+            for (int n = 0; n < IM_ARRAYSIZE(options); n++)
+            {
+                bool is_selected = (current_option == n);
+                if (ImGui::Selectable(options[n], is_selected))
+                {
+                    current_option = n;
+                    // Switch theme
+                    ThemeManager_ChangeTheme(n);
+                }
+                if (is_selected)
+                    ImGui::SetItemDefaultFocus();
+            }
+            ImGui::EndCombo();
+        }
+    }
+
+    ImGui::Spacing();
+
+    // -------------- Polygon Mode Combo Box --------------
+    {
+        ImGui::Text("Polygon Mode: ");
+        ImGui::SameLine();
+        if (ImGui::Combo("##PolygonMode", &polygonMode, polygonModeOptions, IM_ARRAYSIZE(polygonModeOptions)))
+        {
+            switch (polygonMode)
+            {
+            case 0: // Fill
+                glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                break;
+            case 1: // Wireframe
+                glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+                break;
+            case 2: // Points
+                glPolygonMode(GL_FRONT_AND_BACK, GL_POINT);
+                break;
+            default:
+                glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+                break;
+            }
+        }
+    }
+
+    ImGui::End(); // End of "Performance##performance"
+
+    // Pop the style var
     ImGui::PopStyleVar();
 }

src/Windows/RenderWindow.cpp

@@ -8,6 +8,8 @@
 #include <glm/gtc/type_ptr.hpp>
 #include "imgui.h"
 
+#include "Engine/Settings.h"
+
 #include "gcml.h"
 
 #include "Componenets/GameObject.h"
@@ -28,12 +30,126 @@ extern std::vector<std::shared_ptr<GameObject>> g_GameObjects;
 
 // Extern reference to our global (or extern) asset manager
 extern AssetManager g_AssetManager;
+extern Settings g_SettingsManager;
 
 extern std::shared_ptr<CameraComponent> g_RuntimeCameraObject;
 
 extern int g_GPU_Triangles_drawn_to_screen;
 extern int g_GPU_Draw_Calls;
 
+extern bool DrawBBBO;
+
+// Simple container for six planes
+struct FrustumPlanes
+{
+    glm::vec4 planes[6]; // Each plane is (A,B,C,D)
+};
+
+// Extract 6 planes from the combined view-projection matrix
+inline FrustumPlanes ExtractFrustumPlanes(const glm::mat4 &vp)
+{
+    FrustumPlanes frustum;
+
+    // Left
+    frustum.planes[0] = glm::vec4(
+        vp[0][3] + vp[0][0],
+        vp[1][3] + vp[1][0],
+        vp[2][3] + vp[2][0],
+        vp[3][3] + vp[3][0]);
+
+    // Right
+    frustum.planes[1] = glm::vec4(
+        vp[0][3] - vp[0][0],
+        vp[1][3] - vp[1][0],
+        vp[2][3] - vp[2][0],
+        vp[3][3] - vp[3][0]);
+
+    // Bottom
+    frustum.planes[2] = glm::vec4(
+        vp[0][3] + vp[0][1],
+        vp[1][3] + vp[1][1],
+        vp[2][3] + vp[2][1],
+        vp[3][3] + vp[3][1]);
+
+    // Top
+    frustum.planes[3] = glm::vec4(
+        vp[0][3] - vp[0][1],
+        vp[1][3] - vp[1][1],
+        vp[2][3] - vp[2][1],
+        vp[3][3] - vp[3][1]);
+
+    // Near
+    frustum.planes[4] = glm::vec4(
+        vp[0][3] + vp[0][2],
+        vp[1][3] + vp[1][2],
+        vp[2][3] + vp[2][2],
+        vp[3][3] + vp[3][2]);
+
+    // Far
+    frustum.planes[5] = glm::vec4(
+        vp[0][3] - vp[0][2],
+        vp[1][3] - vp[1][2],
+        vp[2][3] - vp[2][2],
+        vp[3][3] - vp[3][2]);
+
+    // Normalize planes (optional but recommended)
+    for (int i = 0; i < 6; i++)
+    {
+        float length = glm::length(glm::vec3(
+            frustum.planes[i].x,
+            frustum.planes[i].y,
+            frustum.planes[i].z));
+        if (length > 0.0f)
+        {
+            frustum.planes[i] /= length;
+        }
+    }
+
+    return frustum;
+}
+
+inline bool IsBoxInFrustum(const glm::vec3 &bmin,
+                           const glm::vec3 &bmax,
+                           const FrustumPlanes &frustum)
+{
+    // Build the 8 corners in world space
+    // (We assume bmin/bmax are already in world space.)
+    std::array<glm::vec3, 8> corners = {
+        glm::vec3(bmin.x, bmin.y, bmin.z),
+        glm::vec3(bmin.x, bmin.y, bmax.z),
+        glm::vec3(bmin.x, bmax.y, bmin.z),
+        glm::vec3(bmin.x, bmax.y, bmax.z),
+        glm::vec3(bmax.x, bmin.y, bmin.z),
+        glm::vec3(bmax.x, bmin.y, bmax.z),
+        glm::vec3(bmax.x, bmax.y, bmin.z),
+        glm::vec3(bmax.x, bmax.y, bmax.z)};
+
+    // For each plane, check if all corners are behind it.
+    // If yes => box is completely outside.
+    for (int p = 0; p < 6; p++)
+    {
+        const glm::vec4 &plane = frustum.planes[p];
+        int outCount = 0;
+
+        for (const auto &corner : corners)
+        {
+            // Plane eq: A*x + B*y + C*z + D
+            float distance = plane.x * corner.x +
+                             plane.y * corner.y +
+                             plane.z * corner.z +
+                             plane.w;
+
+            if (distance < 0.0f)
+                outCount++;
+        }
+
+        // If all corners are 'behind' the plane, box is outside
+        if (outCount == 8)
+            return false;
+    }
+    // Otherwise, it's at least partially inside
+    return true;
+}
 
 bool PlayPauseButton(const char *label, bool *isPlaying, ImVec2 Size)
 {
@@ -167,6 +283,17 @@ void RenderWindow::InitGLResources()
         m_ShaderPtr = shaderAsset.get();
     }
 
+    {
+        std::shared_ptr<Shader> shaderAsset = g_AssetManager.loadAsset<Shader>(AssetType::SHADER, "assets/shaders/Line");
+        if (!shaderAsset)
+        {
+            fprintf(stderr, "[RenderWindow] Failed to load shader via AssetManager.\n");
+            return;
+        }
+        // Cast back to your Shader class
+        m_LineShaderPtr = shaderAsset.get();
+    }
+
     // ----------------------------------------------------
     // 3) Load TEXTURE from the asset manager
     // ----------------------------------------------------
@@ -205,12 +332,11 @@ void CheckOpenGLError(const std::string &location)
 
 #include <glm/gtc/type_ptr.hpp> // For glm::value_ptr
 #include <algorithm>            // Ensure <algorithm> is included
-
 void RenderWindow::RenderSceneToFBO(bool *GameRunning)
 {
     m_RotationAngle += 0.001f; // Spin per frame
 
-    // Bind the FBO
+    // 1) Bind the FBO and set up viewport
     m_FBO.Bind();
     glViewport(0, 0, m_LastWidth, m_LastHeight);
 
@@ -224,135 +350,188 @@ void RenderWindow::RenderSceneToFBO(bool *GameRunning)
     glClearColor(0.f, 0.f, 0.f, 1.f);
     glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 
-    // Use our loaded shader
+    // 2) Check our main rendering shader
     if (!m_ShaderPtr)
     {
         DEBUG_PRINT("[RenderWindow] Shader pointer is null. Cannot render.");
         m_FBO.Unbind();
-        return; // Can't render without a shader
+        return;
     }
-
     m_ShaderPtr->Use();
 
-    // Define view and projection matrices once
+    // 3) Obtain view/projection from the active camera (or fallback)
     std::shared_ptr<CameraComponent> activeCamera = nullptr;
-
+    glm::mat4 view, proj;
-    glm::mat4 view;
-    glm::mat4 proj;
 
     if (*GameRunning && g_RuntimeCameraObject)
     {
         activeCamera = g_RuntimeCameraObject;
     }
 
-    // Ensure that an active camera is available
     if (activeCamera)
     {
-        // Obtain view and projection matrices from the active camera
         view = activeCamera->GetViewMatrix();
         proj = activeCamera->GetProjectionMatrix();
     }
     else
     {
-        // Fallback to default view and projection if no camera is available
+        // Fallback if no camera
         view = glm::translate(glm::mat4(1.f), glm::vec3(0.f, 0.f, -5.f));
         float aspect = (m_LastHeight != 0) ? (float)m_LastWidth / (float)m_LastHeight : 1.0f;
         proj = glm::perspective(glm::radians(CAM_FOV), aspect, CAM_NEAR_PLAIN, CAM_FAR_PLAIN);
     }
 
-    // Iterate over each GameObject and render it
+    // 4) Extract frustum planes for culling
+    glm::mat4 vp = proj * view;
+    FrustumPlanes frustum = ExtractFrustumPlanes(vp);
+
+    // 5) Iterate over each GameObject and render
+    glm::vec4 LineColor = g_SettingsManager.S_LineColor;
+
     for (auto &obj : g_GameObjects)
     {
         glm::mat4 model = glm::mat4(1.f);
 
-        std::shared_ptr<TransformComponent> transform = obj->GetComponent<TransformComponent>();
+        auto transform = obj->GetComponent<TransformComponent>();
-        std::shared_ptr<MeshComponent> mesh = obj->GetComponent<MeshComponent>();
+        auto mesh = obj->GetComponent<MeshComponent>();
 
-        if (transform && mesh && mesh)
+        if (transform && mesh)
         {
-            // Apply transformations
+            // 5A) Build the Model matrix
             model = glm::translate(model, transform->position);
             model = glm::rotate(model, glm::radians(transform->rotation.x), glm::vec3(1.f, 0.f, 0.f));
             model = glm::rotate(model, glm::radians(transform->rotation.y), glm::vec3(0.f, 1.f, 0.f));
             model = glm::rotate(model, glm::radians(transform->rotation.z), glm::vec3(0.f, 0.f, 1.f));
             model = glm::scale(model, transform->scale);
 
-            // Compute MVP matrix
+            // 5B) For each submesh
-            glm::mat4 mvp = proj * view * model; // why is this the wrong way?
+            for (auto &submesh : mesh->submeshes)
-
-            // Pass MVP and Model matrices to the shader
-            m_ShaderPtr->SetMat4("uMVP", mvp);
-            m_ShaderPtr->SetMat4("uModel", model);
-
-            // Iterate through each submesh
-            for (const auto &submesh : mesh->submeshes)
             {
-                // Validate VAO
+                // Check if VAO is valid
                 if (submesh.vao == 0)
                 {
                     DEBUG_PRINT("[RenderWindow] Warning: Submesh VAO is not initialized.");
                     continue;
                 }
 
-                // Update triangle count
+                // -------------------------
+                // *** FRUSTUM CULLING ***
+                // Transform submesh bounding box from local -> world space
+                glm::vec3 worldMin(FLT_MAX), worldMax(-FLT_MAX);
+                std::array<glm::vec3, 8> corners = {
+                    glm::vec3(submesh.minExtents.x, submesh.minExtents.y, submesh.minExtents.z),
+                    glm::vec3(submesh.minExtents.x, submesh.minExtents.y, submesh.maxExtents.z),
+                    glm::vec3(submesh.minExtents.x, submesh.maxExtents.y, submesh.minExtents.z),
+                    glm::vec3(submesh.minExtents.x, submesh.maxExtents.y, submesh.maxExtents.z),
+                    glm::vec3(submesh.maxExtents.x, submesh.minExtents.y, submesh.minExtents.z),
+                    glm::vec3(submesh.maxExtents.x, submesh.minExtents.y, submesh.maxExtents.z),
+                    glm::vec3(submesh.maxExtents.x, submesh.maxExtents.y, submesh.minExtents.z),
+                    glm::vec3(submesh.maxExtents.x, submesh.maxExtents.y, submesh.maxExtents.z)};
+
+                for (auto &c : corners)
+                {
+                    // Transform corner by the model matrix
+                    glm::vec4 worldPos = model * glm::vec4(c, 1.0f);
+
+                    // Expand worldMin / worldMax
+                    worldMin.x = std::min(worldMin.x, worldPos.x);
+                    worldMin.y = std::min(worldMin.y, worldPos.y);
+                    worldMin.z = std::min(worldMin.z, worldPos.z);
+
+                    worldMax.x = std::max(worldMax.x, worldPos.x);
+                    worldMax.y = std::max(worldMax.y, worldPos.y);
+                    worldMax.z = std::max(worldMax.z, worldPos.z);
+                }
+
+                // Now test that box against frustum
+                if (!IsBoxInFrustum(worldMin, worldMax, frustum))
+                {
+                    // The submesh is completely outside the camera's view => skip
+                    continue;
+                }
+                // -------------------------
+
+                // 5C) Compute MVP and pass to shader
+                glm::mat4 mvp = vp * model;
+                m_ShaderPtr->SetMat4("uMVP", mvp);
+                m_ShaderPtr->SetMat4("uModel", model);
+
+                // 5D) Update tri count
                 g_GPU_Triangles_drawn_to_screen += static_cast<int>(submesh.indices.size() / 3);
 
-                // Bind textures for the submesh
+                // 5E) Bind textures
-                // Assuming the shader has uniform arrays like uTextures.texture_diffuse[32]
+                const int MAX_DIFFUSE = 32;
-                const int MAX_DIFFUSE = 32; // Must match the shader's MAX_DIFFUSE
                 int textureUnit = 0;
-
+                for (auto &texture : submesh.textures)
-                // Iterate through all textures and bind those with type "texture_diffuse"
-                for (const auto &texture : submesh.textures)
                 {
                     if (texture.type == "texture_diffuse")
                     {
                         if (textureUnit >= MAX_DIFFUSE)
                         {
-                            DEBUG_PRINT("[RenderWindow] Warning: Exceeded maximum number of diffuse textures (%d) for shader.", MAX_DIFFUSE);
+                            DEBUG_PRINT("[RenderWindow] Warning: Exceeded maximum diffuse textures.");
-                            break; // Prevent exceeding the array bounds in the shader
+                            break;
                         }
-
-                        // Activate the appropriate texture unit
                         glActiveTexture(GL_TEXTURE0 + textureUnit);
                         glBindTexture(GL_TEXTURE_2D, texture.id);
 
-                        // Construct the uniform name dynamically (e.g., "uTextures.texture_diffuse[0]")
                         std::string uniformName = "uTextures.texture_diffuse[" + std::to_string(textureUnit) + "]";
                         m_ShaderPtr->SetInt(uniformName, textureUnit);
 
                         textureUnit++;
                     }
                 }
-
+                // Assign default texture to unused slots
-                // Assign default texture to unused texture slots to prevent shader errors
                 for (int i = textureUnit; i < MAX_DIFFUSE; ++i)
                 {
                     std::string uniformName = "uTextures.texture_diffuse[" + std::to_string(i) + "]";
-                    m_ShaderPtr->SetInt(uniformName, 0); // Assign texture unit 0 (ensure texture 0 is a valid default)
+                    m_ShaderPtr->SetInt(uniformName, 0);
                 }
-
-                // Set the number of active diffuse textures
                 m_ShaderPtr->SetInt("uNumDiffuseTextures", textureUnit);
 
-                // Draw the submesh
+                // 5F) Draw submesh (filled)
                 glBindVertexArray(submesh.vao);
-                glDrawElements(GL_TRIANGLES, static_cast<GLsizei>(submesh.indices.size()), GL_UNSIGNED_INT, nullptr);
+                glDrawElements(GL_TRIANGLES,
-                g_GPU_Draw_Calls += 1;
+                               static_cast<GLsizei>(submesh.indices.size()),
+                               GL_UNSIGNED_INT,
+                               nullptr);
+                g_GPU_Draw_Calls++;
                 glBindVertexArray(0);
-
-                // Reset active texture to default
                 glActiveTexture(GL_TEXTURE0);
+
+                // ----------------------------------------
+                // 5G) OPTIONAL: Draw a bounding box outline
+                // ----------------------------------------
+                if (DrawBBBO && m_LineShaderPtr && submesh.bboxVAO != 0)
+                {
+                    // Use a simpler line shader that doesn't rely on textures
+                    m_LineShaderPtr->Use();
+
+                    // Recompute the MVP for the bounding box (same model, same vp)
+                    glm::mat4 bboxMVP = vp * model;
+                    m_LineShaderPtr->SetMat4("uMVP", bboxMVP);
+                    m_LineShaderPtr->SetVec4("uColor", LineColor);
+                    glLineWidth(2.0f);
+
+                    // If your line shader has a uniform color:
+                    // m_LineShaderPtr->SetVec4("uColor", glm::vec4(1,1,0,1)); // e.g., yellow
+
+                    // Draw the bounding box in wireframe lines
+                    glBindVertexArray(submesh.bboxVAO);
+                    // We assume submesh.bboxVertexCount is the number of line-vertices
+                    glDrawArrays(GL_LINES, 0, submesh.bboxVertexCount);
+
+                    glBindVertexArray(0);
+                    glUseProgram(0);
+                }
             }
         }
     }
 
 #if TRANSPERANCY
-
     glDisable(GL_BLEND);
 #endif
     glUseProgram(0);
 
-    // Unbind the FBO
+    // 6) Unbind the FBO
     m_FBO.Unbind();
 }

src/Windows/RenderWindow.h

@@ -35,4 +35,13 @@ private:
 
     // The loaded shader program (via AssetManager)
     Shader* m_ShaderPtr = nullptr; 
+    Shader* m_LineShaderPtr = nullptr;
 };
+
+
+struct Ray
+{
+    glm::vec3 origin;
+    glm::vec3 direction; // Should be normalized
+};
+