Question regarding interaction between VAO bindings and sperate VBO bindings

OpenGL Development
#1

Hello,

I’ve got the following question for you:
When I set up my VAO I bind the VAO i[/i] then bind the VBO i[/i] and IBO i[/i] and then unbind the VAO. As I understand it now the VBO and the IBO are “connected” to the VAO and before I want to draw something I just have to call glBindVertexArray() (without binding the VBO and IBO again).

Now, can I bind the VBO / IBO separately (e.g. for calling glBufferSubData()) and don’t lose the “connection” between VAO and VBO / IBO (or do I have to go through the hole binding VAO, then VBO/IBO again)?

I ask this question because I changed up some code (for optimizing performance) and now I get a

org.lwjgl.opengl.OpenGLException: Cannot use offsets when Element Array Buffer Object is disabled

I can’t quite trace back where the problem is.
EDIT: Found the problem that caused the exception (missing glGenBuffers() call ::)). Question above remains but now I think that I can bind/unbind the VBO/IBO as much as I want without losing the “connection”. I’d be very grateful if some could confirm.
Thanks!

#2

No, the state is stored in the VAO and it shouldn’t be modified if you use the VBO for different purposes AFAIK.

#3

Thank you, everything works now and I can confirm:
You can bind and unbind the VBO / IBO as much as you want without disturbing the VAO.