TRANSFER_VERTEX_TO_FRAGMENT mobile problem

I have a custom lighting shader written. Everything works fine in the editor, but when I build to device, I get the following error, and the shader doesn't work.

'v' : undeclared identifier; 'vertex' : illegal vector field selection

Tracing through the code, I see this is happening inside of TRANSFER_VERTEX_TO_FRAGMENT, and the call to TRANSFER_SHADOW. I am only using 1 directional light, and no others.

Any help would be greatly appreciated.

Thanks.

 

For anyone else, I found a workaround for the issue. Would still like to know why this is happening in the first place.

Code (CG):

1. struct v2f
2. {
3.     float4 pos : SV_POSITION;
4.     fixed4 color : COLOR0;
5.     float3 lightDir : TEXCOORD0;
6.     float3 normal : TEXCOORD1;
7.     #if (defined(SHADER_API_GLES) || defined(SHADER_API_GLES3)) && defined(SHADER_API_MOBILE)
8.     float4 _ShadowCoord : TEXCOORD2;
9.     #else
10.     LIGHTING_COORDS( 2, 3 )
11.     #endif
12. };
13.          
14. struct vertInput
15. {
16.     float4 vertex : POSITION;
17.     float3 normal : NORMAL;
18.     fixed4 color : COLOR;
19. };
20.  
21.          
22. v2f vert( vertInput i )
23. {
24.     v2f o;
25.  
26.     #if (defined(SHADER_API_GLES) || defined(SHADER_API_GLES3)) && defined(SHADER_API_MOBILE)
27.     o._ShadowCoord = mul( unity_World2Shadow[0], mul( _Object2World, i.vertex ) );
28.     #else
29.     TRANSFER_VERTEX_TO_FRAGMENT(o);
30.     #endif          
31.     return o;
32. }

I left out the guts of the shader, but you get the idea. I hope this helps someone.

 

Hey buddy, but is _ShadowCoord doing for you the rest? Just simple declaration is enough? Do u use LIGHT_ATTENUATION(o) with no changes in your fragment shader? Could you show the fragment shader code as well?

 

Same problem, When Unity crashed on mobile build I started getting this error in my custom shader.

 

This is because the macro has a hardcoded parameter :

#define TRANSFER_SHADOW(a) a._ShadowCoord = mul( unity_WorldToShadow[0], mul( unity_ObjectToWorld, v.vertex ) );

=> v.vertex

 

This is pretty pathetic and thanks to this thread, shadow is working for me now.