Incomplete description of pixels argument if using unpack buffer object

[github-manu]

book, page 233, 261, 264, 266, 267, 268 and 269. for the functions glTexImage_, glTexSubImage_, glCompressedTexImage_, glCompressedTexSubImage_, These descriptions of "pixels" are incomplete with regard to unpack buffer object. As described later in the book this argument can be an offset. I think that these descriptions should mention their use with unpack buffer object.

[github-manu]

Also page 317.

[danginsburg]

This fact that the pixels argument can be an offset with unpack buffer objects is described on page 277. It is a fair criticism that perhaps it should have been included in the API descriptions themselves. I will label this an "enhancement" rather than "errata" since I don't believe it is strictly a mistake and I do agree the chapter would be strengthened by mentioning unpack buffer objects in the API descriptions.