Blender material faces are not uploading properly?

[Harry Hyx]

I'm having an issue i've never encountered before and I have no idea what am I doing wrong or why this is happening. I have some objects assigned to a certain material and then when I upload it, those materials aren't assigned to the right objects anymore. As you can see in my example, two objects share the same material but after uploading it, half the faces on that object share a different material. Also the colors are completely different. What am I missing? :(

[Alisha Matova]

That is odd. My only guess is you are close to 8 materials and could have uploaded with quads and triangles. My exporter will create a new material for any quad/triangle group. Easily pushing over the 8 material limit and producing very strange results, like this. Again, I am guessing(with a low caffeine level), but it might be worth converting the whole thing to triangles and upload again.

[Harry Hyx]

Yeah...i'm really not sure why it's happening. I tried what you suggested and this is the result.

I only have 4 different materials. I'm not sure why this is happening.

[Harry Hyx]

Ok, so I figured out that if I apply the subsurf modifier to each of the objects and export all of them into one .dae file, everything appears properly in SL . But, the minute I join them together into one mesh all the materials are screwed up in Second Life. Anyone know what could be causing this?

[Alisha Matova]

Hmm, well that didn't work. I still think it has something to do with the exporter. Maybe fiddle with the exporter options, or worst case, open the .dae in a text editor and see if something looks obviously wrong.

 

Is this a group of mesh objects(linkset in world)? Or one mesh with multiple materials?

[Harry Hyx]

When I upload as a linkset it's fine but the minute I join it, the material faces get all screwed up in Second Life.

I want to join it together so that I can rig it.

[Alisha Matova]

Is it possible the materials on the seperate objects share the same name? That could confuse the exporter/blender/SL.

[Drongle McMahon]

If you want to look in the collada file (at least in mine), this is the list of links that point to the material properties. /there are three indirect links!

<polylist .... material="label1">

........ <instance_material symbol="label1" target ="#label2">     {in visual scene section near end}

......................... <material id="label2"...><instance_effect url="#label3>     {in <library_materials> section}

................................................<effect id="label3"...> {effect defined here} </effect>    {in <library_effects>}

Now, the uploader used to ignore these explicit links and just use the order of the sections in the file. The "label1" attribute is now used to check that LODs use the right materials on the right faces, but think the order may still be what determines which of those links to which effects definition (which sets the colour). The order in the file is determined by the exporter, and it's not always clear how. If it looks like this sort of problem, you can try changing the order pof the effects, materials, instance_materials or nodes in the visuial scene, and see what effect that has on the colours you observe inworld.

 

[Harry Hyx]

I checked and the names are different. I only have an issue if I join them together and then export it.

[Harry Hyx]

Ok I tried looking at the file and I have absolutely no idea what i'm looking for or what it means.

I did figure out that:

-If I apply subsurf modifier to each object then export as linkset = GOOD

-If I join the objects and DO NOT apply subsurf and export as one mesh = GOOD

-If I join then apply subsurf or apply subsurf then join = NO GOOD

[Gaia Clary]

hi.

Would you mind to publish your blend file for inspection? You also can send it to me by email if you prefer.

Also which version of blender and which version of the Collada exporter do you use ?