Black textures on some devices/android versions

I've got an issue where some devices are having my shader show up as black. Does anyone know what the cause of a black texture is? I know pink means the shader isn't supported but black seems like the lighting isn't working.

Example: http://imgur.com/JozhJH9

 

The top picture shows what the shader should look like (and works on most devices) but there are some devices that don't.

You can see the reflection part of the shader is working in the bottom image but the color of the texture is black. The bit of yellow at the back is actually a different material (needed to be transparent for the flames).

Anyone come across this type of issue is custom shaders? It's got to be something I'm doing wrong in my shader:

Code (csharp):

1.  
2. Shader "Simple/VertexLit Reflective"
3. {
4.  
5.     Properties
6.     {
7.          
8.         _Reflected ("Reflection", Color) = (0.15,0.15,0.15,1)
9.         _MainTex ("Base (RGB) RefStrength (A)", 2D) = "white" {}
10.         _BumpTex ("Normal", 2D) = "white" {}
11.         _Cube ("Reflection Cubemap", Cube) = "_Skybox" { TexGen CubeReflect }    
12.         _WindDirection("Wind Direction",Vector) = (0,0,0,0)
13.  
14.     }
15.  
16.  
17.    SubShader
18.    {
19.                
20.           Pass
21.           {    
22.          
23.           Tags {"LightMode"="Vertex" }
24.    
25.  
26.             GLSLPROGRAM
27.    
28.             // Varyings        
29.             varying mediump vec2 uv;
30.             varying mediump vec2 uv2;
31.             varying lowp vec3 lighting;
32.             varying lowp vec3 reflectedDirection;
33.             varying lowp float c;
34.             varying mediump vec3 viewDirection;
35.             varying mediump vec3 normal;
36.             varying mediump vec3 lightDir;
37.             uniform mediump vec3 unity_LightPosition[1];
38.             uniform mediump vec3 unity_LightColor[1];
39.      
40.            
41.             uniform mat4 _Object2World; // model matrix
42.             uniform mat4 _World2Object; // inverse model matrix
43.    
44.             uniform lowp vec4 _WindDirection;
45.  
46.             uniform mediump vec4 _Reflected;
47.    
48.             #ifdef VERTEX
49.              
50.                uniform mediump vec4 _MainTex_ST;
51.                uniform mediump vec4 _BumpTex_ST;
52.                
53.             uniform lowp vec3 _WorldSpaceLightPos0, _LightColor0, _WorldSpaceCameraPos;
54.    
55.             void main()
56.             {            
57.        
58.        
59.                 vec4 wind;
60.        
61.                 wind.xyz    = mat3(_WindDirection, _WindDirection, _WindDirection) * _WindDirection.xyz;
62.                 wind.w        = 0.0;
63.    
64.                   uv = gl_MultiTexCoord0.xy * _MainTex_ST.xy + _MainTex_ST.zw;
65.                   uv2 = gl_MultiTexCoord1.xy * _BumpTex_ST.xy + _BumpTex_ST.zw;
66.          
67.                 viewDirection = vec3(_Object2World * gl_Vertex - vec4(_WorldSpaceCameraPos, 1.0));
68.                
69.                    normal = normalize(gl_NormalMatrix * gl_Normal);
70.                
71.                 lightDir = normalize(vec3(unity_LightPosition[0].xyz));
72.                
73.                 lighting = max(dot(normal, lightDir), 0.) * unity_LightColor[0] + gl_LightModel.ambient.rgb;
74.                  
75.                 c = (1.0-gl_Color.g) * 1.5;
76.                
77.                 reflectedDirection = reflect(viewDirection, normal);  
78.                
79.                 vec4 pos =  gl_Vertex;
80.                
81.                 pos.xyz +=  wind.xyz + (_WindDirection.xyz * (1.0-gl_Color.r)) ;
82.                
83.                 gl_Position = gl_ModelViewProjectionMatrix * pos;
84.                
85.             }
86.      
87.              #endif
88.    
89.              #ifdef FRAGMENT
90.              
91.      
92.             uniform lowp sampler2D _MainTex;
93.             uniform lowp sampler2D _BumpTex;  
94.               uniform lowp samplerCube _Cube;  
95.                
96.             void main()
97.             {
98.    
99.                 lowp vec4 u = texture2D(_MainTex, uv);
100.                 lowp vec4 u2 = texture2D(_BumpTex, uv2);
101.              
102.                  u.rgb *= lighting;
103.              
104.                  gl_FragColor = (u - (u2.g * u) * c) + (textureCube(_Cube, reflectedDirection) * _Reflected);
105.                  
106.             }
107.    
108.              #endif
109.      
110.    
111.              ENDGLSL
112.           }
113.        }
114.        
115.        Fallback "Mobile/VertexLit"
116.    
117. }

 

I have the same problem on one of customer's Android device.



Will let you know if I could find out the cause

 

I used specular reflective on the airplane skin.

 

I have the same issue, anyone find a solution?

 

remember mobile doesnt support over 2048x2048. I found that if you use a texture thats larger then that it will turn black.

 

I do not have any textures that large, thanks though

I really would like a solution to this, I am getting angry 1 star comments from users.

 

might wanna go to unity support with this. Using custom shaders?

 

http://forum.unity3d.com/threads/19...orking-on-iOS-and-Android-Unity-4-2-0f4/page2

Just found near one of hte last posts on page 2 that people are having similiar black texture issues.. i dont know.. maybe same issue?

 

I am using the built in Mobile->Vertex Lit,

 

Hello! Did u find the reason or solution ? We've experienced this as well sometimes.

 

Looks like we've fixed it!

 

Could you say how?

Any chance your device has a MALI 400 GPU?

 

With latest version of Unity I had to play with depth buffers (enable 32 bit, disable 24 bit) or my entire game was black. Android also has limited texture support.

Also check the texture import settings, specifically for Transparency options.

White could be completely transparent?

 

No, it's still reproducible. We're experiencing this bug on iPad devices sometimes. I thought it was related to the Resources.UnloadUnusedAssets() method, but i was wrong.
Have no idea what to do.

 

Hey guys do all your problems go away if you hard set Quality Settings for AntiAliasing Multi Sampling to 0?
QualitySettings.antiAliasing = 0;

I was about to raise my own thread as my issue seems worse when using Static Batching with Anti Aliasing.

Before we get into texture import settings using ETC and RGBA 16 and such. I wanted to point out that my game has been out with 3 updates to Google Play, Amazon / Kindle, and Nook with no texture rendering issues on Unity 3.5.x Pro.

With the 4th update I had upgraded to Unity 4.2.1f4 Pro and now I have users reporting black bars on my UI (NGUI) and flickering graphics. The flickering is some of my meshes deforming all over the place. At first I couldn't reproduce the problem on my devices but now I've isolated the cause with the ramping up of my Quality Settings. Other build settings include: OpenGL ES 2.0 and Android 2.2 as a base.

I have confirmed issues on Galaxy 1 - 4 S devices and on Nook Color by enabling AntiAliasing Mulitsampling 2x or higher.

Can people tell me if they are seeing similar results by hard setting:
QualitySettings.masterTextureLimit = 0; //Let's avoid Mip maps for now.
QualitySettings.antiAliasing = 2; //or 4, 8...

 

Yep, we have no AA at all and experiencing this issue.

 

Yikes. Does it get worse when enabling multi sampling above 0? Many of my static models disappear. I lose my skybox. I get some flickering on screen too which is random.

Anyone notice things change with changes to AA settings?

 

We are also experiencing this problem. We've had it before, but found out there were still some texture atlases set at 4096, we set those to 2048 and that solved the problem. Now we've added some new graphics and the problem has emerged again. I've checked all atlases and nothing is bigger than 2048 this time. Setting antiAliasing makes the problem worse, but we also don't use antiAliasing to begin with so this can not be used to solve the problem.

Any advice would be appreciated!

 

I'm having a similar issue. My static batched models are black when I run on my iPhone 5. They show up fine if I set them to non static.

 

I have the same issue in Traffic Racer after upgrading to Unity 4.2.x It both happens in iOS and Android. But not always. You can see it in a user video below.
https://everyplay.com/videos/1098645
If you look at 00:20 , you can see that it's related with lighting. The texture turns to normal with headlight flasher (when a spot light is enabled). I have tried mobile/diffuse and mobile/vertexlit shaders. The problem occurs on both.

 

I'm having this problem as well: some textures turn black when anti-aliasing is enabled. Did anyone figure out a fix?

 

Simple fix.

Change your Material to "Unlit/Transparent Cutout" if you are using Unity 4.3. Also make sure your Texture Atlas are set to either Texture at 2048x2048 and Truecolor or if you need Advanced settings, choose 2048 and Automatic Truecolor.

This was using NGUI 2.6.1.

Enjoy!

 

I see this topic is quite old, I have experimented this "black-skinned-object" problem today. It was strange as the material preview and every non-skinned mesh looked fine. A time ago, sometimes we saw black objects in mobile, but it was quite rare. But today I switched the editor to OpenGL mode, and every single skinned meshes turned to black.

So I went trough every editor / quality / importer settings options but nothing. The only chance left is to figure out this bug under shader side. I am using a custom shader but it is quite standard for our projects, and worked well before. After a short experimenting I find out if the objects doesn't have vertex colors, but shader want to use them, then in opengGL the "default" assigned color will be black, and not white. In the Editor in OGL, it is constant, so easy to find, but if you build to mobile, some devices renders it fine, and some renders it in black. This is only happens when using skinned mesh renderer.

So if anybody have the same problem, maybe can chek if the used shader multiplicating the final color with the vertex colors as this could be the reason for black objects.

 

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.

 

Changing to unlit textures fixed it for me, but I realize that may not be an option for you. Our game worked perfectly on the S6 and had black textures on the Note 4. I think it may have to do with their current batching system because all objects that were unique (not batched) had no issues. Sorry I couldn't be more help, good luck!

 

Happy to confirm that this solution worked for me - all materials that had this issue were set at 0.5 smoothness (default?), setting them to 0.4 and all textures appeared fine - Tested on a Nexus 7.

 

Just came to report that I had the same problem - black textures on everything (except NGUI textures for some reason). I disabled AA and that solved the problem for me.

[Galaxy Note 4, Android 5.0.1 device]

 

I'm trying a few of these solutions. How on earth do you change the 'smoothness' of a material? I can't find any settings. Is that shader specific? If so, what Shader were you using?

 

Just in case someone comes across this...
Smoothness is property of Standard shader in Unity 5+.

 

HI! i FIXED this, it happening a day ago, and i found the solution, when building the game, set the texture compression : etc1 (default) but before that, make sure all your textures (or the ones that are black), click the texture, once selected, select android and override the setting, then select the format from whatever it is (usually compression) change it to true colour and apply. then build and run the black texture will be as intended. hope i was clear lol, just found this good luck guys!

update: alot of people are struggling , we need to find a way to get this across. spread the word people.

 

I am having this issue
iPhone 5 no problem, but iPhone 6s has the problem
Using Unity 2017.1.3 patch 2, any idea ?

 

Had this again 7 years later... Thinking it's Open GL 2.0 with Fixed Function shaders not working well, have to switch to a CG shader to get it going.

 

Ran into this issue recently on a Pico Neo 2 Device. It was resolved by disabling multi-threaded rendering (using GLES3).

 

The problem is related to "Auto Graphics API" you should turn it on. It solves these kinds of weird problems.