int main(){

    1. unsigned int VBO, VAO, EBO;
    2.     glGenVertexArrays(1, &VAO);//一个缓冲ID生成 VAO1
    3.     glGenBuffers(1, &VBO);//VBO1
    4.     glGenBuffers(1, &EBO);
    6.     glBindVertexArray(VAO);////绑定缓冲对象类型
    8.     glBindBuffer(GL_ARRAY_BUFFER, VBO);
    9.     glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);//绑定数据属性
    11.     glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
    12.     glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);
    14.     //VAO被关联到Data,然后设置顶点属性指针属性，然后EnableVertexAttribArray
    15.     glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)0);
    16.     glEnableVertexAttribArray(0);
    17.     // color attribute
    18.     glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(3 * sizeof(float)));
    19.     glEnableVertexAttribArray(1);
    20.     // texture coord attribute
    21.     glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, 8 * sizeof(float), (void*)(6 * sizeof(float)));
    22.     glEnableVertexAttribArray(2);
    24.     // You can unbind the VAO afterwards so other VAO calls won't accidentally modify this VAO, but this rarely happens. Modifying other
    25.     // VAOs requires a call to glBindVertexArray anyways so we generally don't unbind VAOs (nor VBOs) when it's not directly necessary.
    26.     // glBindVertexArray(0);
    29.     // bind the VAO (it was already bound, but just to demonstrate): seeing as we only have a single VAO we can 
    30.     // just bind it beforehand before rendering the respective triangle; this is another approach.

    while(){

    1. glBindVertexArray(VAO);
    2. glDrawElements(GL_TRIANGLES, 6, GL_UNSIGNED_INT, 0);