Ok maybe I have buggy nvidia implementation on Quadro. But I found discussion here http://stackoverflow.com/questions/8973690/vao-and-element-array-buffer-state So we have to test VAO implementation on different cards. So we have two options if we have geometry with two ebo 1) create two VAO with VBO EBO bingings 2) create one VAO with VBO bingings and bind VAO bind EBO1 draw EBO1 bind EBO2 draw EBO2 But on core context all buffers must have VAO >From your point of view what method should we choose?
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