java - 简单的立方体纹理不显示

Question

我正在使用 lvjgl 和 lvjgui 开发一个程序。尝试显示 2D 纹理时没有问题，但当我尝试显示 3D 立方体时，并非所有纹理都会显示。这是渲染代码:

@Override
public void render(Context context) {
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
   // glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
    glBegin(GL_QUADS);
    glColor3f(0f, 0f, 1f);
    glVertex3f(0.5f, 0.5f, 0.5f);
    glVertex3f(-0.5f, 0.5f, 0.5f);
    glVertex3f(-0.5f, -0.5f, 0.5f);
    glVertex3f(0.5f, -0.5f, 0.5f);

    glColor3f(1, 0, 1);
    glVertex3f(0.5f, -0.5f, 0.5f);
    glVertex3f(-0.5f, -0.5f,0.5f);
    glVertex3f(-0.5f, -0.5f, -0.5f);
    glVertex3f(0.5f, -0.5f, -0.5f);

    glColor3f(0, 1, 1);
    glVertex3f(0.5f, -0.5f, -0.5f);
    glVertex3f(0.5f, -0.5f, 0.5f);
    glVertex3f(0.5f, 0.5f, 0.5f);
    glVertex3f(0.5f, 0.5f, -0.5f);


    glColor3f(1, 0, 0);
    glVertex3f(0.5f, 0.5f, -0.5f);
    glVertex3f(0.5f, -0.5f, -0.5f);
    glVertex3f(-0.5f, -0.5f, -0.5f);
    glVertex3f(-0.5f, 0.5f, -0.5f);

    glColor3f(1, 1, 0);
    glVertex3f(-0.5f, 0.5f, -0.5f);
    glVertex3f(0.5f, 0.5f, -0.5f);
    glVertex3f(0.5f, 0.5f, 0.5f);
    glVertex3f(-0.5f, 0.5f, 0.5f);

    glColor3f(0, 1, 0);
    glVertex3f(-0.5f, 0.5f, 0.5f);
    glVertex3f(-0.5f, -0.5f, 0.5f);
    glVertex3f(-0.5f, -0.5f, -0.5f);
    glVertex3f(-0.5f, 0.5f, -0.5f);

    glEnd();
    if(rotate)
        glRotatef(0.01f,0.0f,0.5f,0.0f);

}

渲染之前，执行以下操作:

public RenderingCallback() {
    glMatrixMode(GL_MODELVIEW);
    glLoadIdentity();
    glClearColor(0.0f, 0.0f, 0.0f, 0.5f);
    glClearDepth(0.5f);
    glDepthFunc(GL_LEQUAL);
    glEnable(GL_DEPTH_TEST);
    glShadeModel(GL_SMOOTH);
    glHint(GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST);
    glRotatef(20f,0.5f,0.0f,0.0f);
}

立方体本身看起来像这样: Cube

和video

正如您所看到的，蓝色根本没有显示，并且一些纹理相互重叠。如果移除一侧，则会出现蓝色一侧。我怎么解决这个问题？我做错了什么？

Answer 1

您缺少深度缓冲区。在LWJGL初始化中，在调用glfwCreateWindow之前提供深度缓冲区的大小:

glfwWindowHint(GLFW_DEPTH_BITS, 16);

您还应该将深度清除为 1.0 而不是 0.5:

glClearDepth(1.0f);