Example 1: lwjgl 3 make screen
import java.nio.IntBuffer;
import org.lwjgl.BufferUtils;
import org.lwjgl.glfw.GLFW;
import org.lwjgl.glfw.GLFWVidMode;
import org.lwjgl.opengl.GL;
import org.lwjgl.opengl.GL11;
public class Display {
public static long window;
public static void createDisplay(int width,int height,String title) {
if(!GLFW.glfwInit())
throw new IllegalStateException("Cant initialize glfw check drivers");
GLFW.glfwWindowHint(GLFW.GLFW_RESIZABLE, GLFW.GLFW_TRUE);
window = GLFW.glfwCreateWindow(width, height, title, 0, 0);
if(window == 0)
throw new IllegalArgumentException("cant make window");
GLFWVidMode videoMode = GLFW.glfwGetVideoMode(GLFW.glfwGetPrimaryMonitor());
GLFW.glfwSetWindowPos(window, (videoMode.width() - width) / 2, (videoMode.height() - height) / 2);
GLFW.glfwMakeContextCurrent(window);
GLFW.glfwSwapInterval(1);
GLFW.glfwShowWindow(window);
GL.createCapabilities();
GL11.glViewport(0, 0, width, height);
}
public static void clearDisplay() {
GL11.glClear(GL11.GL_COLOR_BUFFER_BIT|GL11.GL_DEPTH_BUFFER_BIT);
}
public static boolean canUpdateDisplay() {
return !GLFW.glfwWindowShouldClose(window);
}
public static void updateDisplay() {
GL11.glViewport(0, 0, getWidth(), getHeight());
GLFW.glfwSwapBuffers(window);
GLFW.glfwPollEvents();
}
public static void closeDisplay() {
GLFW.glfwSetWindowShouldClose(window, true);
GLFW.glfwTerminate();
}
public static int getWidth() {
IntBuffer buffer = BufferUtils.createIntBuffer(1);
GLFW.glfwGetWindowSize(window, buffer, null);
return buffer.get();
}
public static int getHeight() {
IntBuffer buffer = BufferUtils.createIntBuffer(1);
GLFW.glfwGetWindowSize(window, null, buffer);
return buffer.get();
}
}
public class Main {
public static void main(String[] args) {
new Main().run();
}
public void run() {
Display.createDisplay(1280, 720, "Minecraft in 1 week");
while(Display.canUpdateDisplay()) {
Display.clearDisplay();
Display.updateDisplay();
}
Display.closeDisplay();
}
}
Example 2: how get started with LWJGL 3
import org.lwjgl.*;
import org.lwjgl.glfw.*;
import org.lwjgl.opengl.*;
import org.lwjgl.system.*;
import java.nio.*;
import static org.lwjgl.glfw.Callbacks.*;
import static org.lwjgl.glfw.GLFW.*;
import static org.lwjgl.opengl.GL11.*;
import static org.lwjgl.system.MemoryStack.*;
import static org.lwjgl.system.MemoryUtil.*;
public class HelloWorld {
// The window handle
private long window;
public void run() {
System.out.println("Hello LWJGL " + Version.getVersion() + "!");
init();
loop();
// Free the window callbacks and destroy the window
glfwFreeCallbacks(window);
glfwDestroyWindow(window);
// Terminate GLFW and free the error callback
glfwTerminate();
glfwSetErrorCallback(null).free();
}
private void init() {
// Setup an error callback. The default implementation
// will print the error message in System.err.
GLFWErrorCallback.createPrint(System.err).set();
// Initialize GLFW. Most GLFW functions will not work before doing this.
if ( !glfwInit() )
throw new IllegalStateException("Unable to initialize GLFW");
// Configure GLFW
glfwDefaultWindowHints(); // optional, the current window hints are already the default
glfwWindowHint(GLFW_VISIBLE, GLFW_FALSE); // the window will stay hidden after creation
glfwWindowHint(GLFW_RESIZABLE, GLFW_TRUE); // the window will be resizable
// Create the window
window = glfwCreateWindow(300, 300, "Hello World!", NULL, NULL);
if ( window == NULL )
throw new RuntimeException("Failed to create the GLFW window");
// Setup a key callback. It will be called every time a key is pressed, repeated or released.
glfwSetKeyCallback(window, (window, key, scancode, action, mods) -> {
if ( key == GLFW_KEY_ESCAPE && action == GLFW_RELEASE )
glfwSetWindowShouldClose(window, true); // We will detect this in the rendering loop
});
// Get the thread stack and push a new frame
try ( MemoryStack stack = stackPush() ) {
IntBuffer pWidth = stack.mallocInt(1); // int*
IntBuffer pHeight = stack.mallocInt(1); // int*
// Get the window size passed to glfwCreateWindow
glfwGetWindowSize(window, pWidth, pHeight);
// Get the resolution of the primary monitor
GLFWVidMode vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
// Center the window
glfwSetWindowPos(
window,
(vidmode.width() - pWidth.get(0)) / 2,
(vidmode.height() - pHeight.get(0)) / 2
);
} // the stack frame is popped automatically
// Make the OpenGL context current
glfwMakeContextCurrent(window);
// Enable v-sync
glfwSwapInterval(1);
// Make the window visible
glfwShowWindow(window);
}
private void loop() {
// This line is critical for LWJGL's interoperation with GLFW's
// OpenGL context, or any context that is managed externally.
// LWJGL detects the context that is current in the current thread,
// creates the GLCapabilities instance and makes the OpenGL
// bindings available for use.
GL.createCapabilities();
// Set the clear color
glClearColor(1.0f, 0.0f, 0.0f, 0.0f);
// Run the rendering loop until the user has attempted to close
// the window or has pressed the ESCAPE key.
while ( !glfwWindowShouldClose(window) ) {
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); // clear the framebuffer
glfwSwapBuffers(window); // swap the color buffers
// Poll for window events. The key callback above will only be
// invoked during this call.
glfwPollEvents();
}
}
public static void main(String[] args) {
new HelloWorld().run();
}
}