first

.gitignore

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+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+CMakeUserPresets.json
+
+build/
+
+# CLion
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#cmake-build-*

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.30.0)
+
+project(openglProject VERSION 0.1)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+
+set(CMAKE_COLOR_MAKEFILE ON)
+set(CMAKE_COLOR_DIAGNOSTICS ON)
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+set(RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/bin")
+set(LIBRARY_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/lib")
+set(ARCHIVE_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/lib")
+
+find_package(GLEW REQUIRED)
+find_package(OpenGL REQUIRED)
+
+add_subdirectory(source)
+add_subdirectory(external)

README.md

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+# openglProject 
+This is a test for opengl

external/CMakeLists.txt

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+# ADD Externals HERE
+add_subdirectory(glfw)
+

source/CMakeLists.txt

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+# ADD SOURCES HERE
+set(SOURCE_FILES
+    main.cpp
+)
+
+add_executable(${PROJECT_NAME} ${SOURCE_FILES})
+
+target_link_libraries(
+    ${PROJECT_NAME}
+    PRIVATE
+    OpenGL::GL
+    GLEW::GLEW
+    glfw)
+target_sources(
+    ${PROJECT_NAME}
+    main.cpp
+)

source/engin/shaders.h

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+#ifndef SHADERS_H
+#define SHADERS_H
+
+
+typedef struct {
+    char* vertex;
+    int vertexSize;
+    char* fragment;
+    int fragmentSize;
+} shader;
+
+int ReadFragmentShader(const char* path, shader* shader);
+int ReadVertexShader(const char* path, shader* shader);
+
+
+#endif

source/engin/window.c

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+#include "window.h"
+#include "GLFW/glfw3.h"
+#include <string.h>
+
+int keyState[GLFW_KEY_LAST] = {0};
+
+// Key name lookup table (optional, you can hardcode or load from a config)
+const char* keyNames[GLFW_KEY_LAST] = {
+    "Escape", "F1", "F2", "F3", "F4", "F5", "F6", "F7", "F8", "F9", "F10", "F11", "F12",
+    "Backspace", "Tab", "Return", "Space", "Delete", "Insert", "Home", "End", "PageUp", "PageDown",
+    "Left", "Up", "Right", "Down", "PrintScreen", "Pause", "ScrollLock", "NumLock", "CapsLock",
+    "Shift", "Control", "Alt", "Super", "Enter", "Backspace", "Tab", "Space",
+    // Add more key names as needed
+    "A", "B", "C", "D", "E", "F", "G", "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z",
+    "0", "1", "2", "3", "4", "5", "6", "7", "8", "9",
+    // Add more if needed
+};
+void keyCallback(GLFWwindow* window, int key, int scancode, int action, int mods);
+
+int WindowCreate(window* w, window_config *config) {
+    glfwInit();
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_PROFILE);
+    glfwWindowHint(GLFW_RESIZABLE, GL_TRUE);
+    
+    w->ctx = glfwCreateWindow(config->width, config->height, config->Name, 0, 0);
+
+    glfwMakeContextCurrent(w->ctx);
+
+    glfwSetKeyCallback(w->ctx, keyCallback);
+
+    glewExperimental = GL_TRUE;
+    glewInit();
+    glfwGetFramebufferSize(w->ctx, &w->width, &w->height);
+
+    return 0;
+}
+
+int WindowHandleInput(window* w) {
+    return 0;
+}
+int WindowEventHandler(window* w) {
+    return 0;
+}
+
+static int keyNameToCode(const char* name) {
+    for (int i = 0; i < GLFW_KEY_LAST; ++i) {
+        if (strcmp(name, keyNames[i]) == 0) {
+            return i;
+        }
+    }
+    return -1;  // invalid key
+}
+
+// GetKey wrapper
+int GetKey(const char* keyName) {
+    int keyCode = keyNameToCode(keyName);
+    if (keyCode == -1) {
+        return 0; // or you can handle error differently
+    }
+    return keyState[keyCode];
+}
+
+// GLFW key callback
+void keyCallback(GLFWwindow* window, int key, int scancode, int action, int mods) {
+    if (key >= 0 && key < GLFW_KEY_LAST) {
+        if (action == GLFW_PRESS) {
+            keyState[key] = 1;
+        } else if (action == GLFW_RELEASE) {
+            keyState[key] = 0;
+        }
+    }
+}
+

source/engin/window.h

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+#ifndef WINDOW_H
+#define WINDOW_H
+
+typedef int(*window_evnet_cb)(int argc, void* argv);
+
+typedef struct {
+    const char* Log;
+    window_evnet_cb callback;
+    
+
+}window_event;
+
+#ifdef _GLFW_WAYLAND
+#define GLEW_STATIC
+#include <GL/glew.h>
+#include <GLFW/glfw3.h>
+    typedef GLFWwindow context;
+#else
+// If not using GLFW
+#endif
+
+typedef struct {
+    const char* Name;
+    const char* Description;
+    int width;
+    int height;
+    window_event windowClosedEvent;
+    window_event windowOpenEvent;
+    window_event windowKeyEvent;
+}window_config;
+
+typedef struct {
+    const char* Name;
+    const char* Description;
+    int width;
+    int height;
+    context* ctx;
+}window;
+
+int WindowCreate(window* w,window_config* config);
+int WindowHandleInput(window* w);
+int WindowEventHandler(window* w);
+int GetKeyDown(const char* keyName);
+#endif

source/main.cpp

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+/* #############################################################################
+ *   # openglProject
+ *   This is a test for opengl
+ *
+ *   AUTHER: Preacherdhm
+ *   DATE: 22/06/26
+ * #############################################################################
+ */
+#include <iostream>
+
+// GLEW
+#define GLEW_STATIC
+#include <GL/glew.h>
+
+// GLFW
+#include <GLFW/glfw3.h>
+
+
+// Function prototypes
+void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
+
+// Window dimensions
+const GLuint WIDTH = 800, HEIGHT = 600;
+
+// Shaders
+const GLchar* vertexShaderSource = "#version 330 core\n"
+    "layout (location = 0) in vec3 position;\n"
+    "void main()\n"
+    "{\n"
+    "gl_Position = vec4(position.x, position.y, position.z, 1.0);\n"
+    "}\0";
+const GLchar* fragmentShaderSource = "#version 330 core\n"
+    "out vec4 color;\n"
+    "void main()\n"
+    "{\n"
+    "color = vec4(1.0f, 0.5f, 0.2f, 1.0f);\n"
+    "}\n\0";
+
+// The MAIN function, from here we start the application and run the game loop
+int main()
+{
+    // Init GLFW
+    glfwInit();
+    // Set all the required options for GLFW
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+    glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+    glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+    glfwWindowHint(GLFW_RESIZABLE, GL_FALSE);
+
+    // Create a GLFWwindow object that we can use for GLFW's functions
+    GLFWwindow* window = glfwCreateWindow(WIDTH, HEIGHT, "LearnOpenGL", nullptr, nullptr);
+    glfwMakeContextCurrent(window);
+
+    // Set the required callback functions
+    glfwSetKeyCallback(window, key_callback);
+
+    // Set this to true so GLEW knows to use a modern approach to retrieving function pointers and extensions
+    glewExperimental = GL_TRUE;
+    // Initialize GLEW to setup the OpenGL Function pointers
+    glewInit();
+
+    // Define the viewport dimensions
+    int width, height;
+    glfwGetFramebufferSize(window, &width, &height);  
+    glViewport(0, 0, width, height);
+
+
+    // Build and compile our shader program
+    // Vertex shader
+    GLuint vertexShader = glCreateShader(GL_VERTEX_SHADER);
+    glShaderSource(vertexShader, 1, &vertexShaderSource, NULL);
+    glCompileShader(vertexShader);
+    // Check for compile time errors
+    GLint success;
+    GLchar infoLog[512];
+    glGetShaderiv(vertexShader, GL_COMPILE_STATUS, &success);
+    if (!success)
+    {
+        glGetShaderInfoLog(vertexShader, 512, NULL, infoLog);
+        std::cout << "ERROR::SHADER::VERTEX::COMPILATION_FAILED\n" << infoLog << std::endl;
+    }
+    // Fragment shader
+    GLuint fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
+    glShaderSource(fragmentShader, 1, &fragmentShaderSource, NULL);
+    glCompileShader(fragmentShader);
+    // Check for compile time errors
+    glGetShaderiv(fragmentShader, GL_COMPILE_STATUS, &success);
+    if (!success)
+    {
+        glGetShaderInfoLog(fragmentShader, 512, NULL, infoLog);
+        std::cout << "ERROR::SHADER::FRAGMENT::COMPILATION_FAILED\n" << infoLog << std::endl;
+    }
+    // Link shaders
+    GLuint shaderProgram = glCreateProgram();
+    glAttachShader(shaderProgram, vertexShader);
+    glAttachShader(shaderProgram, fragmentShader);
+    glLinkProgram(shaderProgram);
+    // Check for linking errors
+    glGetProgramiv(shaderProgram, GL_LINK_STATUS, &success);
+    if (!success) {
+        glGetProgramInfoLog(shaderProgram, 512, NULL, infoLog);
+        std::cout << "ERROR::SHADER::PROGRAM::LINKING_FAILED\n" << infoLog << std::endl;
+    }
+    glDeleteShader(vertexShader);
+    glDeleteShader(fragmentShader);
+
+
+    // Set up vertex data (and buffer(s)) and attribute pointers
+    // We add a new set of vertices to form a second triangle (a total of 6 vertices); the vertex attribute configuration remains the same (still one 3-float position vector per vertex)
+    GLfloat vertices[] = {
+        // First triangle
+        0.9f, 0.5f, 0.0f,  // Left 
+        0.0f, 0.5f, 0.0f,  // Right
+        0.9f, -0.5f, 0.0f,  // Top 
+        // Second triangle
+         0.0f, -0.5f, 0.0f,  // Left
+         0.9f, -0.5f, 0.0f,  // Right
+         0.00f, 0.5f, 0.0f   // Top 
+    };
+    GLuint VBO, VAO;
+    glGenVertexArrays(1, &VAO);
+    glGenBuffers(1, &VBO);
+    // Bind the Vertex Array Object first, then bind and set vertex buffer(s) and attribute pointer(s).
+    glBindVertexArray(VAO);
+
+    glBindBuffer(GL_ARRAY_BUFFER, VBO);
+    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
+
+    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (GLvoid*)0);
+    glEnableVertexAttribArray(0);
+
+    glBindBuffer(GL_ARRAY_BUFFER, 0); // Note that this is allowed, the call to glVertexAttribPointer registered VBO as the currently bound vertex buffer object so afterwards we can safely unbind
+
+    glBindVertexArray(0); // Unbind VAO (it's always a good thing to unbind any buffer/array to prevent strange bugs)
+
+    // Game loop
+    while (!glfwWindowShouldClose(window))
+    {
+        // Check if any events have been activiated (key pressed, mouse moved etc.) and call corresponding response functions
+        glfwPollEvents();
+
+        // Render
+        // Clear the colorbuffer
+        glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        // Draw our first triangle
+        glUseProgram(shaderProgram);
+        glBindVertexArray(VAO);
+        glDrawArrays(GL_TRIANGLES, 0, 6); // We set the count to 6 since we're drawing 6 vertices now (2 triangles); not 3!
+        glBindVertexArray(0);
+
+        // Swap the screen buffers
+        glfwSwapBuffers(window);
+    }
+    // Properly de-allocate all resources once they've outlived their purpose
+    glDeleteVertexArrays(1, &VAO);
+    glDeleteBuffers(1, &VBO);
+    // Terminate GLFW, clearing any resources allocated by GLFW.
+    glfwTerminate();
+    return 0;
+}
+
+// Is called whenever a key is pressed/released via GLFW
+void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode)
+{
+    if (key == GLFW_KEY_ESCAPE && action == GLFW_PRESS)
+        glfwSetWindowShouldClose(window, GL_TRUE);
+}
+