Question

我正在关注youtube上的教程，但我遇到了OpenGL无法解决的问题。我不知道如何解决它。

Exception in thread "EndlessRunner" java.lang.IllegalStateException: No OpenGL context is current in the current thread.
at org.lwjgl.opengl.GLContextWindows.createFromCurrent(GLContextWindows.java:61)
at org.lwjgl.opengl.GLContext.createFromCurrent(GLContext.java:36)
at net.alfredo.Main.init(Main.java:59)
at net.alfredo.Main.run(Main.java:91)
at java.lang.Thread.run(Unknown Source)

主要

package net.alfredo;

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

import java.nio.ByteBuffer;

import org.lwjgl.glfw.GLFWKeyCallback;
import org.lwjgl.glfw.GLFWvidmode;
import org.lwjgl.opengl.GLContext;

import Input.Input;

public class Main implements Runnable {


private Thread thread;
public boolean running = true;

private GLFWKeyCallback keyCallback;

public Long window;

public static void main(String args[]) {

    Main game = new Main();
    game.start();

}

public void start(){

    running = true;
    thread = new Thread(this, "EndlessRunner");
    thread.start();

}

public void init(){

    if(glfwInit() != GL_TRUE){
        System.err.println("La inicializacion de GLWF fallo!");
    }

    glfwWindowHint(GLFW_RESIZABLE, GL_TRUE);

    window = glfwCreateWindow(800, 600, "Cuboid MMORPG", NULL, NULL);

    if(window == NULL){
        System.err.println("No se pudo crear la ventana!");
    }

    glfwSetKeyCallback(window, keyCallback = new Input());


    ByteBuffer vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
    glfwSetWindowPos(window, 100, 100);

    glfwShowWindow(window);
    GLContext.createFromCurrent();

    glClearColor(0.56f  , 0.250f, 0.425f, 1.0f);

    glEnable(GL_DEPTH_TEST);

    System.out.println("OpenGL: " + glGetString(GL_VERSION));

}

public void update(){
    glfwPollEvents();

    if(Input.keys[GLFW_KEY_SPACE]){
        System.out.println("Has precionado la tecla Espacio!");

    }

}

public void render(){
    glfwSwapBuffers(window);

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

}

@Override
public void run() {
    init();
    while(running){
        update();
        render();

        if (glfwWindowShouldClose(window) == GL_TRUE){

            running = false;

        }

    }

    keyCallback.release();

}
}

Answer 1

您需要调用glfwMakeContextCurrent将OpenGL上下文绑定到您的线程。 LWJGL website上还有一个工作示例。

Answer 2

OpenGL上下文在创建时绑定到线程，因此它们只能在该线程中使用。请参阅答案here.

当前线程中没有OpenGL上下文

2 个答案: