import org.lwjgl.glfw.*;
import org.lwjgl.opengl.*;
import static org.lwjgl.glfw.GLFW.*;
import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.system.MemoryUtil.NULL;

public class GlProbe {
    public static void main(String[] a) {
        GLFWErrorCallback.createPrint(System.err).set();
        if (!glfwInit()) { System.out.println("FAIL: glfwInit"); return; }
        glfwDefaultWindowHints();
        glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE);
        long win = glfwCreateWindow(320, 240, "probe", NULL, NULL);
        if (win == NULL) { System.out.println("FAIL: createWindow"); return; }
        glfwMakeContextCurrent(win);
        GL.createCapabilities();
        System.out.println("OK gl=" + glGetString(GL_VERSION));
        System.out.println("OK renderer=" + glGetString(GL_RENDERER));
        glfwDestroyWindow(win); glfwTerminate();
    }
}