OpenGL顶点缓冲区不会在golang中绘制任何内容

我尝试将本教程与Golang一起使用：http : //www.opengl-tutorial.org/beginners-tutorials/tutorial-2-the-first-triangle/ go-version打开窗口并使背景变蓝，但是不显示三角形。C版本确实显示了它。这是Go中的代码：

err := glfw.Init()
if err != nil {
    log.Fatal("Failed to init GLFW: " + err.Error())
}

err = glfw.OpenWindow(1024, 768, 0,0,0,0, 32,0, glfw.Windowed)
if err != nil {
    log.Fatal("Failed to open GLFW window: " + err.Error())
}

if gl.Init() != 0 {
    log.Fatal("Failed to init GL")
}

gl.ClearColor(0.0, 0.0, 0.3, 0.0)

// create vertexbuffer
gVertexBufferData := []float32{-1.0,-1.0,0.0, 1.0,-1.0,0.0, 0.0,1.0,0.0}
vertexBuffer := gl.GenBuffer()
vertexBuffer.Bind(gl.ARRAY_BUFFER)
gl.BufferData(gl.ARRAY_BUFFER, len(gVertexBufferData), gVertexBufferData, gl.STATIC_DRAW)

for {
    // clear screen
    gl.Clear(gl.COLOR_BUFFER_BIT)

    // first attribute buffer: vertices
    var vertexAttrib gl.AttribLocation = 0
    vertexAttrib.EnableArray()
    vertexBuffer.Bind(gl.ARRAY_BUFFER)
    var f float32 = 0.0
    vertexAttrib.AttribPointer(
        3,     // size
        false, // normalized?
        0,     // stride
        &f) // array buffer offset

    // draw the triangle
    gl.DrawArrays(gl.TRIANGLES, 0, 3)

    vertexAttrib.DisableArray()

    glfw.SwapBuffers()
}

这是c中有效的代码：

if(!glfwInit())
    return -1;

if(!glfwOpenWindow( 1024, 768, 0,0,0,0, 32,0, GLFW_WINDOW ))
    return -1;

if(glewInit() != GLEW_OK)
    return -1;

glClearColor(0.0f, 0.0f, 0.3f, 0.0f);

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

static const GLfloat g_vertex_buffer_data[] = { 
    -1.0f, -1.0f, 0.0f,
    1.0f, -1.0f, 0.0f,
    0.0f,  1.0f, 0.0f,
};
GLuint vertexbuffer;
glGenBuffers(1, &vertexbuffer);
glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer);
glBufferData(GL_ARRAY_BUFFER, sizeof(g_vertex_buffer_data), g_vertex_buffer_data, GL_STATIC_DRAW);

while(1) {
    glClear( GL_COLOR_BUFFER_BIT );

    // 1rst attribute buffer : vertices
    glEnableVertexAttribArray(0);
    glBindBuffer(GL_ARRAY_BUFFER, vertexbuffer);
    glVertexAttribPointer(
        0,
        3, // size
        GL_FLOAT, // type
        GL_FALSE, // normalized?
        0, // stride
        (void*)0 // array buffer offset
    );

    // Draw the triangle !
    glDrawArrays(GL_TRIANGLES, 0, 3); // From index 0 to 3 -> 1 triangle

    glDisableVertexAttribArray(0);

    // Swap buffers
    glfwSwapBuffers();
}

也许我给了vertexAttrib.AttribPointer（）错误的参数，因为我不确定要给它什么而不是（void *）0。我尝试了nil，但这导致应用程序崩溃。＆gVertexBufferData [0]也不起作用。

我正在使用github.com/banthar/gl作为glew-wrapper，转到1.0.2和ubuntu 12.04 amd64。

编辑更新：

glGetError没有给出任何错误