OpenGL绘制纹理错误

我正在使用LWJGL并尝试绘制纹理，其渲染代码如下：

public static void main(String[] args) {
    GLFWErrorCallback.createPrint(System.err).set();
    if (!GLFW.glfwInit()) {
        throw new IllegalStateException("Unable to initialize GLFW");
    }
    GLFW.glfwWindowHint(GLFW.GLFW_VISIBLE, GLFW.GLFW_FALSE);
    GLFW.glfwWindowHint(GLFW.GLFW_RESIZABLE, GLFW.GLFW_TRUE);
    window = GLFW.glfwCreateWindow(1280, 720, "Test", 0, 0);
    GLFW.glfwMakeContextCurrent(window);
    GL.createCapabilities();
    GL11.glMatrixMode(GL11.GL_PROJECTION);
    GL11.glLoadIdentity();
    GL11.glOrtho(0, 1280, 0, 720, 1, -1);
    GL11.glMatrixMode(GL11.GL_MODELVIEW);
    GL11.glViewport(0, 0, 1920, 1200);
    GL11.glClearColor(1.0F, 1.0F, 1.0F, 1.0F);
    int x = 0, y = 0;
    ByteBuffer imageBuffer = readFile(filename);
    IntBuffer w = BufferUtils.createIntBuffer(1);
    IntBuffer h = BufferUtils.createIntBuffer(1);
    IntBuffer comp = BufferUtils.createIntBuffer(1);
    ByteBuffer image = STBImage.stbi_load_from_memory(imageBuffer, w, h, comp, 0);  
    int textureId = GL11.glGenTextures();
    int glTarget = GL11.GL_TEXTURE_2D;
    GL11.glBindTexture(glTarget, textureId);
    glTexParameteri(glTarget, GL11.GL_TEXTURE_WRAP_S, GL12.GL_CLAMP_TO_EDGE);
    glTexParameteri(glTarget, GL11.GL_TEXTURE_WRAP_T, GL12.GL_CLAMP_TO_EDGE);
    glTexParameteri(glTarget, GL11.GL_TEXTURE_MIN_FILTER, GL11.GL_NEAREST);
    glTexParameteri(glTarget, GL11.GL_TEXTURE_MAG_FILTER, GL11.GL_NEAREST);
    int width = w.get(0);
    int height = h.get(0);
    /** Send texel data to OpenGL if texture is 2d texture */
    if (glTarget == GL11.GL_TEXTURE_2D) {
        if(comp.get(0) == 3){
            GL11.glTexImage2D(glTarget, 0, GL11.GL_RGB, width, height, 0, GL11.GL_RGB, GL11.GL_UNSIGNED_BYTE, image);
        }
        else{
            GL11.glTexImage2D(glTarget, 0, GL11.GL_RGBA, width, height, 0, GL11.GL_RGBA, GL11.GL_UNSIGNED_BYTE, image);
            GL11.glEnable(GL11.GL_BLEND);
            GL11.glBlendFunc(GL11.GL_SRC_ALPHA, GL11.GL_ONE_MINUS_SRC_ALPHA);
        }
    }
    while (Sgl.window.isAlive()) {
        GLFW.glfwPollEvents();
        GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
        /* Texture display part */
        bind();
        GL11.glEnable(glTarget);
        GL11.glBegin(GL11.GL_QUADS);
        GL11.glTexCoord2f(0,0);
        GL11.glVertex2f(x,y);
        GL11.glTexCoord2f(1,0);
        GL11.glVertex2f(x+width,y);
        GL11.glTexCoord2f(1,1);
        GL11.glVertex2f(x+width,y+height);
        GL11.glTexCoord2f(0,1);
        GL11.glVertex2f(x,y+height);
        GL11.glEnd();
        GL11.glDisable(glTarget);
        /*End texture display part*/
        GLFW.glfwSwapBuffers(window);
    }
}

问题是该窗口大1280x720，图像只有392x69，但显示方式如下：

因此，它处于颠倒状态，比预期的要大得多，并且位置错误。

我究竟做错了什么？

编辑：由于代码的大小，我删除了一些if子句。