Help with the Append Puzzle please!

Here is your problem: you assign a material to all objects in a group, but this group contains not only meshes, it also contains empty objects that are not supposed to have a material.

And you can add this script somewhere in the begining

It will remove this effect

And you’d better not use geometry batching at all. It increases tris count significantly. A dubious optimization…
before

after

David Yanez wrote:

Indeed I had 2 meshes that were not sharing the same shader in the group

The problem was not in meshes and their shaiders, the problem was in empty objects in this group. Assign materials to meshes only, the function assignMat() doesn’t check if an object has a material or not )))

David Yanez wrote:

I was thinking maybe to add some puzzle in the “when loaded do” of the append scene

You were thinking in the right direction. Place the assign material puzzle there. To see all names of objects in the appended scene just append it in the viewport of the puzzles editor.

Hi @david-yanez!
It seems that I have a very similar issue today after updating to 4.7.1 version. I’m getting axactly the same error messagen and my imports fail.
Did you manage to find a solution to the above problem??

Hi Kdv, thanks for the advice.
In fact I spent some more time yesyterday on this, and finally discovered that this had to do with a material assignment in earlier steps of my scene loading (steps where I imported some objects and assigning them an already existing material – and these objetcs were importing and displayed correctly!).
However as soon as I invoked the append scene puzzle after that, the imports failed… I had to rework the material assignment part, and make sure the objects had some properties defined with the following script (like the computeTangents(), or a correct UVMap name):

var mat = v3d.SceneUtils.getMaterialByName(appInstance, "NI_paint_vertex_color");
var object = PzLib.getObjectByName(addedPennantName);
object.geometry.attributes.uv.name="UVMap";
object.castShadow = false;
object.receiveShadow = false;
object.geometry.computeTangents();
object.material = mat;