Hi Harald,

That makes perfect sense, but the create skin is still not showing. I emailed you the small repro project to the email you've given me.
For reference and benefit of others, here's the code I've tried:

public class Root : MonoBehaviour
{
    public SkeletonDataAsset Body;
    SkeletonAnimation _bodySkeletonAnimation;

public SkeletonDataAsset Outfit;

void Start()
{
    _bodySkeletonAnimation = SkeletonAnimation.NewSkeletonAnimationGameObject(Body);
    var bodySkeletonData = Body.GetSkeletonData(true);

    var outfitSkeletonData = Outfit.GetSkeletonData(true);
    var outfitSkin = outfitSkeletonData.DefaultSkin;

    var customSkin = new Skin("custom-skin");

    foreach (var attachement in outfitSkin.Attachments)
    {
        var slotIndex = attachement.SlotIndex;
        var slotName = outfitSkeletonData.Slots.Items[slotIndex].Name;
        int bodySlotIndex = bodySkeletonData.FindSlotIndex(slotName);

        if (bodySlotIndex >= 0)
        {
            Debug.Log("attaching " + attachement.Name + " to slot index " + bodySlotIndex + ", slotName: " + slotName + ", outfit slot index: " + slotIndex);
            customSkin.SetAttachment(bodySlotIndex, slotName, attachement.Attachment);
        }
    }

    _bodySkeletonAnimation.Skeleton.SetSkin(customSkin);
    _bodySkeletonAnimation.Skeleton.SetSlotsToSetupPose();

    _bodySkeletonAnimation.AnimationState.Apply(_bodySkeletonAnimation.Skeleton);
}
}

Hi Harald,

Thanks for this. I agree some slots are missing, and it's expected those attachment do not get attached.
But why are the attachments for existing matching slots not getting attached. I log out the matching slots that exist and I try to attach to it, but it does not render. Example of the log:

attaching JuliaArmor/footL to slot index 0, slotName: footR, outfit slot index: 1

Here is the slot on the body (from Julia_bdy_noX.json) - it's currently at index 0:

"slots": [
   { "name": "footR", "bone": "P_FootR", "attachment": "JuliaNude/footR" },
        ....

Here is the same slot on the outfit (Julia_Armor_noX.json) - slot as index 1 (that is ok as you mentioned), attached to the bone of the same name P_FootR (but this likely does not matter)

"slots": [
   { "name": "pantLegR", "bone": "P_hips", "attachment": "JuliaArmor/pantLegR" },
   { "name": "footR", "bone": "P_FootR", "attachment": "JuliaArmor/footL" },

and here is the attachement on the outfit, which it's referencing.

"footL": {
   "JuliaArmor/footL": {
      "type": "mesh",

I would expect some attaachements from the outfit to show up on the body (log has about 10 valid matches), but none do .. The scene only has a single draw call (using body texture), and no draw call using outfit texture.

Thanks for all the help so far. I got the prototype to an acceptable state, and now I'm exploring the other option, where in the prefabs I strip out the textures (and replace them by 1 pixel white textures). This bit works, and when I load the character at runtime, all is white as expected and no large textures are loaded.

I need to load those original large textures or materials with them at runtime on demand, when I need to use a specific skin. And I'm not sure where to find the materials / textures that are used at runtime, so that I can replace them / swap textures on them. I see that SpineAtlasAsset class stores an array of materials .. but how do I get to its instance at runtime, from the SkeletonData / SkeletonDataAsset?

Hi .. Thanks for that, yes I've seen those, and got this working. So I can at startup load all textures and set them up, and the character renders correctly.

But I am trying to do this on demand. Somewhere later I call:

	[code]Skin srcSkin = bodySkeletonData.FindSkin(name);[/code]

and before this I need to load the textures for this skin. So from the skin name I need to go to a specific material or materials inside the SpineAtlasAsset.
I looked at how FindSkin works .. and followed it to Skin class, and from there to SkinEntry and Attachment classes, and from there to MeshAttachment and RegionAttachment, but don't see a way to find out which material I need to load.

And I got it to work .. loading textures on demand when adding skin, and all seems to work. Thanks for your help.
At some point when your solution is ready, we'll probably considering switching to it .. but for now, this works well. What is the ETA for the feature? (within couple of months, or longer?)