如何在OpenGL中使用多个缓冲区

#include <GL/glew.h>
#include <GLFW/glfw3.h>
#include <iostream>

// 顶点数据
GLfloat vertices[] = {
    -0.5f, -0.5f, 0.0f,
     0.5f, -0.5f, 0.0f,
     0.0f,  0.5f, 0.0f
};

// 索引数据
GLuint indices[] = {
    0, 1, 2
};

int main() {
    // 初始化GLFW
    if (!glfwInit()) {
        std::cerr << "Failed to initialize GLFW" << std::endl;
        return -1;
    }

    // 创建窗口
    GLFWwindow* window = glfwCreateWindow(800, 600, "OpenGL Multiple Buffers", nullptr, nullptr);
    if (!window) {
        std::cerr << "Failed to create GLFW window" << std::endl;
        glfwTerminate();
        return -1;
    }
    glfwMakeContextCurrent(window);

    // 初始化GLEW
    if (glewInit() != GLEW_OK) {
        std::cerr << "Failed to initialize GLEW" << std::endl;
        return -1;
    }

    // 创建VBO和EBO
    GLuint VBO, EBO;
    glGenBuffers(1, &VBO);
    glGenBuffers(1, &EBO);

    // 绑定并填充VBO
    glBindBuffer(GL_ARRAY_BUFFER, VBO);
    glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);

    // 绑定并填充EBO
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(indices), indices, GL_STATIC_DRAW);

    // 设置顶点属性指针
    glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (void*)0);
    glEnableVertexAttribArray(0);

    // 渲染循环
    while (!glfwWindowShouldClose(window)) {
        // 清屏
        glClear(GL_COLOR_BUFFER_BIT);

        // 绘制三角形
        glDrawElements(GL_TRIANGLES, 3, GL_UNSIGNED_INT, 0);

        // 交换缓冲区并处理事件
        glfwSwapBuffers(window);
        glfwPollEvents();
    }

    // 清理资源
    glDeleteBuffers(1, &VBO);
    glDeleteBuffers(1, &EBO);
    glfwTerminate();

    return 0;
}