Material rendering black in iOS and Android when assigned in code.

Archived Forums Questions & Answers
1

Hi,

I have an array of materials and when I assign one to a plane it’s displayed black. This happens only in devices, not on web. The materials are power of 2, and if I assign it in the editor it shows up well in the devices.

Here’s my code:

   var tarjetas : Material[];
    
    function Start () 
    { 
         transform.Find("Front").renderer.material = tarjetas[0];
    }

It should be noted that this script is applied to an empty GameObject that has two planes in it (Front and Back);

Any help will be much appreciated. Thanks!

As a starting point, try an alternate shader. I know I've had issues with even simple shaders working in one environment and not in others.

 –

You will often see shader errors appearing in the device log if the shader would not compile on the device

 –

There were no shader errors in the log. Only if I assign them in code they appear black.

 –

The log on the device? And have you tried a different shader to rule out the textures etc. Pretty sure my iOS shaders go black if they don't compile - but Unity always puts a log in the XCode console explaining why.

 –

You might want to try have something with that shader on it actually in the scene - there might be a problem where it gets optimised out of the build if nothing appears to be using it.

 –

2 Answers

2
2

Turned out the z property of scale in my plane was 0! Changing it to 1 solved the problem.

Glad you found it!

 –

strange how it worked with the web player and simulator but not the devices...

 –
3

I had issues with basic materials turning black on Android. Fixed it by reducing the “smoothness” of the material to 0.5 or less. I also chose compress in ETC1 format, but I think the main issue was smoothness above 0.5. I’m using Unity 5.1.