Java Can'；t使纹理均匀可变，以便在LWJGL 3中工作

所以我一直在网上学习大量的教程，并试图用OpenGL创建自己的图形引擎。问题是我无法使纹理工作。我可以在屏幕上渲染正方形并更改颜色，但我不能显示纹理

这是主要的方法：

public class Main implements Runnable{

public int HEIGHT = 400;
public int WIDTH = 400;

private boolean running;
private Thread thread;
private long window;

Level level;

public Main(){  
}

public void start(){
    running = true;
    thread = new Thread(this, "Game");
    thread.start();
}

public void stop(){
    try {
        thread.join();
        running = false;

    } catch (InterruptedException e) {
        e.printStackTrace();
    }
}

private void init(){
    if(glfwInit() != GL_TRUE){
        System.err.println("Couldn't load the window");
        return;
    }

    glfwWindowHint(GLFW_RESIZABLE, GL_TRUE);
    glfwWindowHint(GLFW_VISIBLE, GL_FALSE);

    window = glfwCreateWindow(WIDTH, HEIGHT, "Game!!", NULL, NULL);
    if(window == NULL){
        System.err.println("Couldn't create the window");
        return;
    }

    ByteBuffer vidmode = glfwGetVideoMode(glfwGetPrimaryMonitor());
    glfwSetWindowPos(window, (GLFWvidmode.width(vidmode) - WIDTH) / 2, (GLFWvidmode.height(vidmode) - HEIGHT) / 2);

    glfwMakeContextCurrent(window);
    glfwShowWindow(window);
    GLContext.createFromCurrent();

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

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

    Shader.loadAll();


    Matrix4f pr_matrix = Matrix4f.orthographic(-1.0f, 1.0f, -1.0f, 1.0f, -1.0f, 1.0f);

    Shader.BG.setUniformMat4f("pr_matrix", pr_matrix);
    Shader.BG.setUniform1i("tex", 1);
    level = new Level();



}

public void run() {
    init();

    long lastTime = System.nanoTime();
    double delta = 0.0;
    double ns = 1000000000.0 / 60.0;
    long timer = System.currentTimeMillis();
    int updates = 0;
    int frames = 0;

    while (running) {
        long now = System.nanoTime();
        delta += (now - lastTime) / ns;
        lastTime = now;
        if (delta >= 1.0) {
            update();
            updates++;
            delta--;
        }
        render();
        frames++;
        if (System.currentTimeMillis() - timer > 1000) {
            timer += 1000;
            System.out.println(updates + " ups, " + frames + " fps");
            updates = 0;
            frames = 0;
        }
        if (glfwWindowShouldClose(window) == GL_TRUE)
            running = false;
    }
}

private void update(){
    glfwPollEvents();
    if(Input.isKeyDown(GLFW_KEY_ESCAPE)){
        running = false;
    }
}

private void render(){
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

    int error = glGetError();
    if (error != GL_NO_ERROR)
        System.out.println(error);

    glfwSwapBuffers(window);
    level.render();

}

public static void main(String arg[]){
    new Main().start();
}

}

这是级别方法：

public class Level {

private VertexArray background;
private Texture bgTexture;

public Level() {

    float[] vertices = new float[] { 
            -0.5f, 0.5f, 0f, 
            -0.5f, -0.5f, 0f, 
            0.5f, -0.5f, 0f, 
            0.5f, 0.5f, 0f

    };

    byte[] indices = new byte[] { 0, 1, 3, 3, 1, 2 };

    float[] tcs = new float[] { 
            0f, 0f, 
            0, 1.0f, 
            1.0f, 1.0f, 
            1.0f, 0 
    };

    background = new VertexArray(vertices, indices, tcs);
    bgTexture = new Texture("res/bird.png");

}

public void render() {
    Shader.BG.enable();
    bgTexture.bind();
    background.bind();

    background.draw();

    bgTexture.unbind();
    Shader.BG.disable();
}

这里是纹理类：

public class Texture {

private int width, height;
private int texture;

public Texture(String path) {
    texture = load(path);
}

private int load(String path) {
    int[] pixels = null;
    try {
        BufferedImage image = ImageIO.read(new FileInputStream(path));
        width = image.getWidth();
        height = image.getHeight();
        pixels = new int[width * height];
        image.getRGB(0, 0, width, height, pixels, 0, width);
    } catch (FileNotFoundException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    }

    int[] data = new int[width * height];
    for (int i = 0; i < width * height; i++) {
        int a = (pixels[i] & 0xff000000) >> 24;
        int r = (pixels[i] & 0xff0000) >> 16;
        int g = (pixels[i] & 0xff00) >> 8;
        int b = (pixels[i] & 0xff);

        data[i] = a << 24 | b << 16 | g << 8 | r;
    }

    int result = glGenTextures();
    glBindTexture(GL_TEXTURE_2D, result);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0, GL_RGBA, GL_UNSIGNED_BYTE, BufferUtils.createIntBuffer(data));
    glBindTexture(GL_TEXTURE_2D, 0);
    return result;
}

public void bind() {
    glBindTexture(GL_TEXTURE_2D, texture);
}

public void unbind() {
    glBindTexture(GL_TEXTURE_2D, 0);
}

}

这里是着色器：

顶点：

#version 400 core

in vec4 position;
layout (location = 1) in vec2 tc;

uniform mat4 pr_matrix;

out vec2 tc_vr;


void main(void)
{
    gl_Position = pr_matrix * position;
    tc_vr = tc;
}

片段：

#version 400 core

out vec4 color;

in vec2 tc_vr;

uniform sampler2D tex;

void main(void)
{
    color = texture(tex, tc_vr);

}

---

非常感谢你的帮助

您正在将

tex

uniform设置为1，这意味着您使用纹理单元1。但是我没有看到任何东西将纹理绑定到纹理单元1。您可以尝试将统一设置为0，这是默认的纹理单位。@RetoKoradi非常感谢！它解决了问题，我没有意识到我没有在任何地方声明纹理单元。

#version 400 core

out vec4 color;

in vec2 tc_vr;

uniform sampler2D tex;

void main(void)
{
    color = texture(tex, tc_vr);

}