Simple glfw&glad transparent window test

test.cpp

#include "glad/glad.h"
#include "GLFW/glfw3.h"

int main() {

  glfwInit();
  glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
  glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
  glfwWindowHint(GLFW_RESIZABLE, GLFW_FALSE);
  glfwWindowHint(GLFW_TRANSPARENT_FRAMEBUFFER, GLFW_TRUE);

  auto window = glfwCreateWindow(800, 600, "Test", nullptr, nullptr);
  if (!window) {
    std::println("Failed to create window");
    return 1;
  }

  glfwMakeContextCurrent(window);

  if (!gladLoadGLLoader((GLADloadproc)glfwGetProcAddress)) {
    std::println("Failed to initialize GLAD");
    return 1;
  }

  while (!glfwWindowShouldClose(window)) {
    glClearColor(0.1, 0.1, 0.1, 0);
    glClear(GL_COLOR_BUFFER_BIT);
    
    glBegin(GL_TRIANGLES);
    glColor3f(1, 0, 0);
    glVertex2f(-0.5, -0.5);
    glColor3f(0, 1, 0);
    glVertex2f(0.5, -0.5);
    glColor3f(0, 0, 1);
    

    glfwSwapBuffers(window);
    glfwPollEvents();
  }
}