上下文共享不能在opengl中使用glfw3和glew，第二个窗口就像上下文一样根本不共享[暂停]

所以我试图从glfw复制这个上下文共享的例子，在c：https://github.com/glfw/glfw/blob/master/examples/sharing.c中使用glfw，glew和opengl .

除了在每个窗口的上下文中独立设置的背景颜色之外，第二个窗口没有显示任何内容，所有vao和vbo以及着色器程序也独立地绑定在每个上下文中，但主要资源仅在第一个窗口中生成和填充上下文（所有的vbo，vao和着色器程序），这个程序应该在第一个窗口的白色背景上显示一个红色三角形，在第二个窗口的黑色背景上显示一个红色三角形，但如前所述窗口没有显示三角形，即使从第一个窗口的上下文开始绘制它的所有资源都绑定了，代码很大并且包含一些不必要的信息所以我做了一个伪代码表示：

Initialize glfw

Make win and win2 objects

Set win's context to opengl
Create window of win with the parameters that were set
Make opengl use win's context ( glfwMakeContextCurrent(win) )

Initialize and handle glew

//In the win opengl context

//Triangle shape
/// Note: I don't use indicies for this since it's overkill

GLuint vertArrayID;
glGenVertexArrays(1, &vertArrayID);
glBindVertexArray(vertArrayID);

//Triangle position data
static const GLfloat vertex_positions_data[] = {
    -1.0f, -1.0f,
    0.0f, 1.0f,
    1.0f, -1.0f,
};

GLuint vertexPositionBufferID;
glGenBuffers(1, &vertexPositionBufferID);
glBindBuffer(GL_ARRAY_BUFFER, vertexPositionBufferID);
glBufferData(GL_ARRAY_BUFFER, sizeof(vertex_positions_data), vertex_positions_data, GL_STATIC_DRAW);


glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, (void*) 0);

// Shaders
const std::string vs = std::string("#version 330 core\n") +
                       std::string("layout(location = 0) in vec2 vertPos;\n")+
                       std::string("\n")+
                       std::string("void main(){\n")+
                       std::string("gl_Position = vec4(vertPos, 1, 1);\n")+
                       std::string("}\n");

const std::string fs = std::string("#version 330 core\n") +
                       std::string("out vec3 color;\n")+
                       std::string("\n")+
                       std::string("void main(){\n")+
                       std::string("color = vec3(1, 0, 0);\n")+
                       std::string("}\n");

GLuint programID = loadVertexAndFragmentShaders(vs, fs); // Compile link and create the program from the shaders

glUseProgram(programID);

glClearColor(255, 255, 255, 255);

//------------------------------------------------------------------------------------------------------------------

Set win2's context to opengl
Set win2 to share it's context with win
Create the window of win2 with the parameters that were set
Make opengl use win2's context ( glfwMakeContextCurrent(win2) )


//In the win2 opengl context that dosen't have anything bound but has all the data that is shared from win's context ( i think )
//------------------------------------------------------------------------------------------------------------------ 
glBindVertexArray(vertArrayID); // Here was were i discovered the error thanks to the approved answer ( vao's don't get shared between contexts )

glBindBuffer(GL_ARRAY_BUFFER, vertexPositionBufferID);
glEnableVertexAttribArray(0);
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 0, (void*) 0);

glUseProgram(programID);

glClearColor(0, 0, 0, 255);
//------------------------------------------------------------------------------------------------------------------

Render win and win2 by using glDrawArrays while on their respective context until both windows are closed

glfwTerminate();

如果你想在这里找到完整的源代码，那就是主源文件的链接：https://gitlab.com/Error1000/MWH/blob/master/src/OpenGLTest.cpp .

附：对不起，如果代码不好，我还在学习一点，对不起我的英语，这不是我的母语，并且有这么大的例子，如果你在伪代码中发现任何问题，请同时查看来源和确保它是代码的问题，而不是我的伪代码表示 .