104 lines
No EOL
2.5 KiB
C++
104 lines
No EOL
2.5 KiB
C++
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#include "Backend.h"
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namespace engine::Backend
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{
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GLFWwindow* window;
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int SCREEN_WIDTH = 1920;
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int SCREEN_HEIGHT = 1080;
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bool Init(const char* title, int width = SCREEN_WIDTH, int height = SCREEN_HEIGHT)
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{
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SCREEN_WIDTH = width;
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SCREEN_HEIGHT = height;
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// Initialize GLFW
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glfwInit();
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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// Create GLFW Window
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window = glfwCreateWindow(SCREEN_WIDTH, SCREEN_HEIGHT, title, NULL, NULL);
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if (window == NULL)
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{
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std::cout << "Failed to create GLFW window" << std::endl;
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glfwTerminate();
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return false;
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}
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glfwMakeContextCurrent(window);
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// Initialize GLAD
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if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress))
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{
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std::cout << "Failed to initialize GLAD" << std::endl;
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return false;
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}
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// Initialize Viewport & setup resize callback
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glViewport(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT);
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glfwSetFramebufferSizeCallback(window, window_resize_callback);
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glfwSetCursorPosCallback(window, mouse_callback);
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glfwSetScrollCallback(window, scroll_callback);
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// depth testing
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glEnable(GL_DEPTH_TEST);
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return true;
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}
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void PreFrame()
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{
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// Input processing
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processInput(window);
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// Depth buffer
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glClearColor(0, 0, 0, 1);
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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}
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void PostFrame()
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{
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// Call events & swap buffers
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glfwSwapBuffers(window);
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glfwPollEvents();
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}
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void Cleanup()
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{
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glfwTerminate();
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}
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bool isWindowOpen()
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{
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return !glfwWindowShouldClose(window);
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}
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void window_resize_callback(GLFWwindow* window2, int width, int height)
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{
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glViewport(0, 0, width, height);
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SCREEN_WIDTH = width;
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SCREEN_HEIGHT = height;
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}
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void processInput(GLFWwindow* window2)
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{
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// Close on Escape
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if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
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glfwSetWindowShouldClose(window, true);
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}
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void mouse_callback(GLFWwindow* window2, double xposIn, double yposIn)
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{
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}
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void scroll_callback(GLFWwindow* window2, double xoffset, double yoffset)
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{
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}
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GLFWwindow* getWindow()
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{
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return window;
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}
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} |