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glMultiDrawElements with Transformation matrices

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Hello guys,
I have a problem with using glMultiDrawElements;

In a typical drawing, I would do something like this: (Pseudo-code)

 

foreach obj in objects {
    SetOtherStuffs();

    

    SetModelMatrix(...);

    glDrawElements(...);

}

 

As you can see, I can set Model Matrices of every model.
But with glMultiDrawElements, How can I achive something like this? How can I give a different matrix for every object?
Is there a shader counter for draw calls? (So I can grab their matrices from something like a uniform.)

If yes. How will this counter increased if some of the calls are instanced when I use glMultiDrawElementsIndirect()?

Edited by OzgurEra

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