What does glTexStorage do?

Question

The documentation indicates that this \"allocates\" storage for a texture and its levels. The pseudocode provided seems to indicate that this is for the mipmap levels.

Answer 1

Before calling glGenerateMipmap​, the base mipmap level must be established. (either with mutable or immutable storage).so...,you can using glTexImage2D+glGenerateMipmap only,more simple!