[x3d-public] Need for colorspaceConversion field in ImageTexture, glTF compatibility

[Holger Seelig]

I have now also added the field `colorSpaceConversion` in X_ITE to the ImageTexture node, also in the same notation. Everything was already prepared for it.

I can't show an example yet, because everything is still in the dev branch.

The signature of the new field looks like this:

SFBool [] colorSpaceConversion TRUE

Best regards,
Holger

--
Holger Seelig
Leipzig, Germany

holger.seelig at yahoo.de
https://create3000.github.io/x_ite/

> Am 21.09.2023 um 08:26 schrieb Andreas Plesch <andreasplesch at gmail.com>:
> 
> Coming back to color profiles potentially embedded in some important
> image formats, I added a colorSpaceConversion field to ImageTexture in
> x3dom:
> 
> https://andreasplesch.github.io/x3dom/dist/doc/author/Texturing/ImageTexture.html
> 
> It is by default true for normal X3D use and can be false for loading
> glTF textures correctly:
> 
> https://andreasplesch.github.io/Library/Viewer/index.html?url=https://gist.githubusercontent.com/andreasplesch/817bc44089a7b7545149cf12acdd7c86/raw/75242ebfea03048d0f4939e1656c5063c9544d11/TextureEncodingTest.x3d
> 
> It is trivial to change the field name if there are other suggestions.
> 
> -Andreas
> 
> On Tue, Aug 29, 2023 at 1:53 PM Andreas Plesch <andreasplesch at gmail.com> wrote:
>> 
>> Following up after some work:
>> 
>> On Thu, Aug 24, 2023 at 11:15 PM Andreas Plesch <andreasplesch at gmail.com> wrote:
>>> 
>>> On Thu, Aug 24, 2023 at 9:14 AM Michalis Kamburelis
>>> <michalis.kambi at gmail.com> wrote:
>>>> 
>>>> 1. As for colorspaceConversion:
>>>> 
>>>> I don't think we want to avoid adding X3D field for this :)
>>> 
>>> Well, it is worth thinking through options if it means smarter
>>> solutions can be discovered.
>>> 
>>>> I'm all after adding X3D field to account for this -- that is, say
>>>> explicitly whether ICC profile should be honored or not, so that all
>>>> cases are satisfied. I'm cool with colorspaceConversion name.
>>> 
>> ...snip
>> 
>> After some thought I do think that a new field is needed for
>> ImageTexture (and MovieTexture, and Background ?).
>> "colorspaceConversion" or "colorSpaceConversion" or perhaps something
>> shorter like "colorProfile"  ?
>> 
>> x3dom will probably use the webgl texture unpacking parameter.
>> 

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