64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
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#include <stdio.h>
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#include <glad/gl.h>
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#include <GLFW/glfw3.h>
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#include <stdlib.h>
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void framebuffer_size_callback(GLFWwindow* window, int width, int height) {
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glViewport(0, 0, width, height);
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}
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void process_input(GLFWwindow *window) {
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if(glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
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glfwSetWindowShouldClose(window, GLFW_TRUE);
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}
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void init_glfw(int major, int minor) {
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if(!glfwInit()) {
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fprintf(stderr, "Failed to initialize GLFW\n");
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exit(-1);
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}
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glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, major);
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glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, minor);
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glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
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}
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GLFWwindow* create_window(int width, int height, const char* title) {
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GLFWwindow* window = glfwCreateWindow(width, height, title, NULL, NULL);
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if(!window) {
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fprintf(stderr, "Failed to create GLFW window\n");
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glfwTerminate();
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exit(-1);
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}
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glfwMakeContextCurrent(window);
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glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
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if (!gladLoadGL((GLADloadfunc)glfwGetProcAddress)) {
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fprintf(stderr, "Failed to initialize GLAD\n");
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exit(-1);
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}
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glViewport(0, 0, width, height);
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return window;
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}
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int main() {
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init_glfw(4, 6);
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GLFWwindow* window = create_window(800, 600, "gearlib");
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while (!glfwWindowShouldClose(window)) {
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process_input(window);
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glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
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glClear(GL_COLOR_BUFFER_BIT);
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glfwSwapBuffers(window);
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glfwPollEvents();
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}
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glfwTerminate();
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return 0;
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}
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