Test:
package org.demo;
import org.junit.jupiter.api.AfterEach;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
class DemoTest {
private Demo demo;
@BeforeEach
void setUp() {
demo = new Demo();
demo.init();
}
@AfterEach
void exit() {
demo.exit();
}
@Test
void createWindow() throws Exception {
long winHandle = demo.createWindow();
System.out.println("createWindow()");
}
}
App:
package org.demo;
import org.lwjgl.Version;
import org.lwjgl.glfw.GLFWErrorCallback;
import org.lwjgl.glfw.GLFWVidMode;
import org.lwjgl.opengl.GL;
import org.lwjgl.system.MemoryStack;
import java.nio.IntBuffer;
import static org.lwjgl.glfw.Callbacks.glfwFreeCallbacks;
import static org.lwjgl.glfw.GLFW.*;
import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.system.MemoryStack.stackPush;
import static org.lwjgl.system.MemoryUtil.NULL;
public class Demo {
private long window;
public static void main(String[] args) {
new Demo().run();
}
public void run() {
System.out.println("LWJGL " + Version.getVersion());
init();
loop();
exit();
}
public void exit() {
glfwFreeCallbacks(window);
glfwDestroyWindow(window);
glfwTerminate();
glfwSetErrorCallback(null).free();
GL.setCapabilities(null);
}
private void loop() {
GL.createCapabilities();
glClearColor(0.0f, 0.0f, 0.5f, 0.0f);
while (!glfwWindowShouldClose(window)) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
render();
glfwSwapBuffers(window);
glfwPollEvents();
}
}
private void render() {
glColor3f(1.0f, 1.0f, 1.0f);
glBegin(GL_LINES);
glVertex2f(-1f, -1f);
glVertex2f(1, 1);
glEnd();
}
protected void init() {
GLFWErrorCallback.createPrint(System.err).set();
if (!glfwInit())
throw new IllegalStateException("Unable to initialize GLFW");
glfwDefaultWindowHints();
glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE);
createWindow();
glfwSetKeyCallback(window, (window, key, scancode, action, mods) -> {
if (key == GLFW_KEY_ESCAPE && action == GLFW_RELEASE)
glfwSetWindowShouldClose(window, true);
});
try (MemoryStack stack = stackPush()) {
IntBuffer pWidth = stack.mallocInt(1);
IntBuffer pHeight = stack.mallocInt(1);
glfwGetWindowSize(window, pWidth, pHeight);
GLFWVidMode vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
glfwSetWindowPos(
window,
(vidmode.width() - pWidth.get(0)) / 2,
(vidmode.height() - pHeight.get(0)) / 2
);
}
glfwMakeContextCurrent(window);
glfwSwapInterval(1);
glfwShowWindow(window);
}
protected long createWindow() {
window = glfwCreateWindow(500, 500, "Test Window", NULL, NULL);
if (window == NULL)
throw new RuntimeException("Failed to create the GLFW window");
return window;
}
}
