Rename primitive in mesh/primitive to mode

[glome83]

There's a property named "primitive" in "mesh/primitive". This can lead to confusion. Rename it to "mode" as it is called in glDrawArrays etc.

[fabrobinet]

@glome83 Thanks for bringing this to our attention, so as here:

      "primitives": [
                {
                    "attributes": {
                        "NORMAL": "accessor_25",
                        "POSITION": "accessor_23",
                        "TEXCOORD_0": "accessor_27"
                    },
                    "indices": "accessor_21",
                    "material": "blinn3-fx",
                    "primitive": 4
                }
            ]

you suggest instead:

      "primitives": [
                {
                    "attributes": {
                        "NORMAL": "accessor_25",
                        "POSITION": "accessor_23",
                        "TEXCOORD_0": "accessor_27"
                    },
                    "indices": "accessor_21",
                    "material": "blinn3-fx",
                    "mode": 4
                }
            ]

Which I don't have a strong opinion about this but I undertand that it could be less confusing - only concern here is I don't find mode particularly explicit but it is true that is matches the GL naming of arguments and since the value is a glEnum it's fine...

@pjcozzi what do you think ?

[pjcozzi]

This probably better since "primitives/primitive" isn't used in two different contexts. Should I update the spec?

[fabrobinet]

@pjcozzi yeah, let's do it for 0.9

[pjcozzi]

Updated the spec in 5bcf79e in the spec-9 branch.

[pjcozzi]

This can be closed when 1.0 is merged...or now.

[pjcozzi]

This is done in the spec-1.0 branch.