Unity 4.2 Multiple Materials draw order.

Hello,

I upgraded my project to Unity 4.2, everything went fine. But one of the functionality seems to be broken. I was using multiple materials( 7 to be precise) on a plane and had arranged them in the draw order in renderer.materials[] array. After the update they are being drawn in random order. I am using Transparent/Diffuse shader for all the materials. Has anyone else also faced similar problem ? Is there a better way of going about this?

Let me know If you think I should add a screen shot of my property inspector

Thanks,
Neerav

 

I have a problem where a model with multiple materials was showing other body parts through the outer mesh. So boots show through/on top of cape/robes for example, after upgrading.

 

I'm having a similar issue: I have a plane with two materials layered one on top of the other. The draw order is messed up, but this only happens randomly (like, I have 7 instances of this plane and only 3 exhibit the issue, randomly).
This also happened to me since I upgraded to 4.2.

 

Ok, I found a workaround: if you have an object with (say) 2 materials whose sorting is wrong, simply attach a script to the object that reloads the materials at runtime by loading them from Resources, and recreating and reassigning the whole array of materials.
Not the best, but it works and will sort your broken game if you have a presentation tomorrow like me.

Eg: 2 materials (holographic panels)

 

Thanks for the update. This does not seem to work for me. Although, I am not loading materials from resources, but textures from resources. Any Ideas ?

 

I am experiencing the same problem. I was able to use the runtime workaround by ccontinisio to get the order drawn correctly..thank you!
As a note, the materials need to be assigned every frame, not just once in your start...however, the resources can be loaded once

 

Will reassigning materials break batching? I don't knowing so, I'm just thinking out loud.

 

I am having a similar experience. My thread is linked to this thread, so I'll link back there as well:

http://forum.unity3d.com/threads/192467-Unity-4-2-submesh-draw-order?p=1309435#post1309435

If we can get enough people to submit bugs, hopefully Unity will see this as a legitimate problem and get a fix. This is a major break in the established process!

To submit a bug report in Unity go to the menu "Help > Report a Bug". Be sure to include screenshots and project files to help them diagnose the issue.

 

Unity support has confirmed the bug in 4.2 with me and has sent it on to their developers. They have no timeline for the fix, however.

 

A Unity developer, Kuba, has contacted me on my thread. He says that Unity will try to get the depth issue fixed in the next hot release.

http://forum.unity3d.com/threads/192467-Unity-4-2-submesh-draw-order?p=1309435#post1309435

 

Just in case anyone is watching this thread, Unity has released v4.2.1 that has the hotfix for the draw order bug.

 

Maybe one of you can help me with a similar problem.... here
http://answers.unity3d.com/questions/950560/problem-using-multiple-materials.html

 

Hi, I'm using Unity 5.2 now and seems to have the same problem here. I have a base 3d model, a character with clothes. each part can be swapped with meshes that are loaded from Resources folder (FBX files) at runtime. The problem is most of my meshes contain multiple materials and once I swapped a certain mesh, sometimes, the materials are not mapping to the right submeshes. For example, the Top part has cloth and skin materials, when I swap the meshes and assign new materials to the materials[], some meshes (loaded from the Resources folder) will have skin texture mapped to the submeshes that are supposed the be mapped with cloth texture and vice versa. Has anyone experienced this with Unity 5.2 as well? Any suggestions or work arounds? Thanks