Hi!

I have a method that load a mesh from .obj, and Initialice. It works when I load one mesh only...But If I load two o more different meshes, the first that I load take the values ( vertices, indices... ) from the second. I think that the problem is in VAO or VBO, but i can´t found the error.

There is the initialice method from Mesh Class:

void MeshPart::Initialize()
{
    // Creamos el VAO

    glGenVertexArrays(1, &BufferIds[0]);

    ExitOnGLError("ERROR: No se puede generar el VAO");
    glBindVertexArray(BufferIds[0]);
    ExitOnGLError("ERROR: No se puede bindear el VAO");

    // Activamos dos vertex attribute locations
    glEnableVertexAttribArray(0);
    glEnableVertexAttribArray(1);
    ExitOnGLError("ERROR: No se puede activar los vertex attributes");

    // Creamos los VBO
    glGenBuffers(2, &BufferIds[1]);
    ExitOnGLError("ERROR: No se pueden generar los buffer objects");

    // Bindeamos el VBO al VAO
    glBindBuffer(GL_ARRAY_BUFFER, BufferIds[1]);
    glBufferData(GL_ARRAY_BUFFER, vtn.size()*sizeof(VertexTextureNormal), &vtn[0], GL_STATIC_DRAW);
    ExitOnGLError("ERROR: No se puede bindear el VBO al VAO");

    glVertexAttribPointer(0, 4, GL_FLOAT, GL_FALSE, sizeof(vtn[0]) ,0);
    glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, sizeof(vtn[0]) , (GLvoid*) sizeof(vtn[0].position));
    ExitOnGLError("ERROR: Could not set VAO attributes");

    // Creamos el IBO
    glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, BufferIds[2]);
    glBufferData(GL_ELEMENT_ARRAY_BUFFER, indices.size() * sizeof(GLuint), &indices.front(), GL_STATIC_DRAW);
    ExitOnGLError("ERROR: No se puede bindear el IBO al VAO");

    glBindVertexArray(0);
}

Does anyone know what happens to me?

Can i see how you have your render function set up

the render function of meshparts:

void MeshPart::Draw()
{
    glBindVertexArray(BufferIds[0]);
    ExitOnGLError("ERROR: No se puede bindear el VAO para dibujar");


    glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, (GLvoid*)0);
    ExitOnGLError("ERROR: No se puede dibujar el meshpart");


    glBindVertexArray(0);
}
 

If i remember correctly from the doc, vao does not store the vbo information. So i would try to also glBind the vbo you want to use as well before calling calling drawElements

I add glBindBuffer(GL_ARRAY_BUFFER, BufferIds[1]) before calling DrawElements and it doesn´t work.

The problem isn´t the VAO or VBO. Before I load the cube, the plane have his data. After I load the cube, plane have the cube data. While the data cube load , the plane have the correctly data. I don´t know what its the problem. At least VBO and VAO are discarted.

Thanks for your attention.

I discover my problem, the mesh variable from actor class...is static!!