Depth Mask Shader Issues with iPhone

The depth mask shader from the wiki dosen't work on the iPhone , it has no effect on the output (altough it does work inside the editor even in iPhone graphic emulation).
can anyone help me fix it?

Code (csharp):

1. Shader "DepthMask"
2. {
3.     SubShader
4.     {
5.         // Turn off lighting, because it's expensive and the thing is supposed to be
6.         // invisible anyway.
7.  
8.         Lighting Off
9.  
10.         // Draw into the depth buffer in the usual way.  This is probably the default,
11.         // but it doesn't hurt to be explicit.
12.  
13.         ZTest LEqual
14.         ZWrite On
15.  
16.         // Don't draw the RGB colour channels, just the alpha channel.  This means
17.         // that nothing visible is drawn.  Ideally, I would have liked to set ColorMask
18.         // to draw nothing at all, but it doesn't seem to be possible to say anything
19.         // like ColorMask None.
20.  
21.         ColorMask A
22.  
23.         // Do nothing specific in the pass:
24.  
25.         Pass {}
26.     }
27. }

 

I want to use this too. Any help?

 

I think that it's behaving inconsistently because it's queue value equals geometry. Try this shader:

Code (csharp):

1. Shader "Depth Mask" {
2.     SubShader {
3.         Tags { "Queue" = "Background" }
4.         ColorMask A
5.         Pass { }
6.     }
7. }

 

That makes it the color of the background, instead of transparent. Can you point me to some documentation on "Queue" =? I haven't found it yet.

Now I did.

http://unity3d.com/support/documentation/Components/SL-SubshaderTags.html

 

I got it working.

The problem is not with the DepthMask shader, although it can be simplified to this (note the zero instead of A):

Code (csharp):

1. Shader "Masked/Mask" {
2.     SubShader {
3.         Tags { "Queue" = "Geometry+10" }
4.         ColorMask 0
5.         Pass { }
6.     }
7. }

The problem is that the Diffuse shader doesn't work on the iPhone. (It falls back to the VertexLit shader.) So, I just cut and pasted some code from the VertexLit shader, and came up with this, which, when applied to the plane (water), works great!

Code (csharp):

1. Shader "Vertexy" {
2.     Properties {
3.         _Color ("Main Color", Color) = (1,1,1,1)
4.         _SpecColor ("Spec Color", Color) = (1,1,1,1)
5.         _Emission ("Emmisive Color", Color) = (0,0,0,0)
6.         _Shininess ("Shininess", Range (0.01, 1)) = 0.7
7.         _MainTex ("Base (RGB)", 2D) = "white" {}
8.     }
9.  
10.     SubShader {
11.         Tags {"Queue" = "Geometry+20" }
12.         Pass {
13.             Material
14.             {
15.                 Diffuse [_Color]
16.                 Ambient [_Color]
17.                 Shininess [_Shininess]
18.                 Specular [_SpecColor]
19.                 Emission [_Emission]
20.             }
21.             Lighting On
22.             SeparateSpecular On
23.             SetTexture [_MainTex]
24.                 {Combine texture * primary DOUBLE, texture * primary}
25.         }
26.     }
27. }

I bet that could be improved upon quite easily by someone who really knows what they're doing. :wink: