[x3d-public] Color differences between X3DOM and X_ITE

[John Carlson]

Apparently, my process strips out non-standard nodes!

Hmm.

On Sun, Apr 19, 2020 at 9:30 AM Andreas Plesch <andreasplesch at gmail.com>
wrote:

> I also believe the observed color differences are due to gamma
> correction being applied by default in x3dom:
>
> https://doc.x3dom.org/tutorials/lighting/gamma/index.html
>
> For x3dom try to disable gamma correction with:
>
> <Environment gammaCorrectionDefault="none"></Environment>
>
> The frag shader in x3dom does encode gamma at the end:
>
>
> https://github.com/x3dom/x3dom/blob/master/src/shader/ShaderDynamic.js#L1270
>
> which means unapplying gamma correction after it has been applied for
> color computation in the shader:
>
> https://github.com/x3dom/x3dom/blob/master/src/shader/ShaderParts.js#L173
>
> -Andreas
>
> > Date: Sun, 19 Apr 2020 06:47:19 -0600
> > From: GPU Group <gpugroup at gmail.com>
> > To: John Carlson <yottzumm at gmail.com>
> > Cc: X3D Graphics public mailing list <x3d-public at web3d.org>
> > Subject: Re: [x3d-public] Color differences between X3DOM and X_ITE
> >
> > H: (inverse) gamma correction applied (at end of frag shader) in x3dom?
> > In freewrl if I apply gamma like a khronos sample does for physical
> > material, I get washed-out look.
> > -Dioug Sanden
> >
> > On Sun, Apr 19, 2020 at 1:19 AM John Carlson <yottzumm at gmail.com> wrote:
> >
> > > [image: image.png]
> > > I believe this is the most recent dev version of X3DOM,
> > > and latest X_ITE build.   I will try to get an online version.
> > >
> > > See color difference between X3DOM (upper) and X_ITE (lower) for both
> JSON
> > > and XML encodings.
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> Andreas Plesch
> Waltham, MA 02453
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