[x3d-public] testing blnder 2.8 and tinygltf

[Michalis Kamburelis]

The GLB you attached renders OK in view3dscene / Castle Game Engine. That
is, I see something similar to your screenshot from Blender. So I would say
that Blender + glTF file are correct, and something further down the line
(maybe tinygltf or glview) did something wrong. I guess they applied flat
shading for some reason.

Looking at my glTF -> X3D import, I do not touch X3D colorPerVertex at all.
That is, it is always left as "true" (default value) when importing glTF.

Moreover, colorPerVertex has no meaning in case of IndexedTriangleStripSet
, IndexedTriangleSet , IndexedTriangleFanSet that I use to express glTF
meshes. The X3D spec for them explicitly says """The value of the
colorPerVertex field is ignored and always treated as TRUE.""" (
https://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/components/rendering.html#IndexedTriangleSet
). I realize this info may be irrelevant to you, if you express glTF mesh
using a different geometry like IndexedFaceSet :)

I'm attaching a screenshot from view3dscene, and also X3D version of it
(done by view3dscene opening GLB, and then "File -> Save As..." to get it
in X3D format).

Regards,
Michalis

śr., 9 wrz 2020 o 03:30 J. Scheurixh <mufti11 at web.de> napisał(a):

> I am currently testing tinygltf as gltf import libary, especially rhe
> glview code example.
> when i use object mode ->  vertex paint mode in blender 2.8, the object
> is shown with colorpervertes true, but the exported gltf file is shown
> with colorPerVertex false 8-(
>
> Is this a problem of blender or a problem of tinygltf ?
>
> What show other gltf viewers for the "untitled.glb" in the attachments ?
>
> so long
> MUFTI
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