How to enable TEXCOORD4-5 in vetex shader?

Code (CSharp):

1.  struct Vertex
2. {
3.      half4 pos : POSITION;
4.     half2  tc_Control : TEXCOORD0;    // Not prefixing '_Contorl' with 'uv' allows a tighter packing of interpolators, which is necessary to support directional lightmap.
5.      
6.     half2 uv_Splat0 : TEXCOORD2;
7.     half2 uv_Splat1 : TEXCOORD3;
8.     half2 uv_Splat2 : TEXCOORD4;
9.     half2 texcoord3 : TEXCOORD5;
10.  
11.   //  #ifdef LIGHMAP_ON
12.    half2 uv_lightmap : TEXCOORD1;
13.   //  #endif
14.  
15. };

,hi all ,TEXCOORD4 and TEXCOORD5 not work,what's wrong?

 

Nobody met this problem?

 

Not sure what problem you're seeing. Some of my shaders have used TEXCOORD0 through TEXCOORD10 without an issue. Is this a surface shader or a vertex fragment shader? If it's a surface shader it won't work because those are the TEXCOORD# from the mesh data itself, in which case Unity only has up to TEXCOORD3 as valid data. If it's a vertex fragment shader you have to fill out that data in the vertex shader.

 

thanks a lot ! I use vertex fragment ,and fill out all the data in the vertex shader,and have no error show....and using shader model 3.0.

 

I have the same question. But I don't figure out the "fill out" mean.
Could you explain how to fill out that data ?
Thank you !

 

fill out means assign value.

 

Unity 2018.1.6 did not have uv channels 5, 6, 7 and 8
I updated to 2018.2.2 and all works great.

Shader side:

Code (CSharp):

1. struct appdata
2.         {
3.             float4 vertex    : POSITION;  // The vertex position in model space.
4.             float3 normal    : NORMAL;    // The vertex normal in model space.
5.             float4 texcoord  : TEXCOORD0; // The first UV coordinate.
6.             float4 texcoord1 : TEXCOORD1; // The second UV coordinate.
7.             float4 texcoord2 : TEXCOORD2; // The third UV coordinate.
8.             float4 texcoord3 : TEXCOORD3; // The fourfth UV coordinate.
9.             float4 texcoord4 : TEXCOORD4; // The fifth UV coordinate. // requires Unity 2018.2+
10.             float4 texcoord5 : TEXCOORD5; // The sixth UV coordinate. // requires Unity 2018.2+
11.             //float4 texcoord6 : TEXCOORD6; // The seventh UV coordinate. // requires Unity 2018.2+
12.             //float4 texcoord7 : TEXCOORD7; // The eigthieth UV coordinate. // requires Unity 2018.2+ // maximum amount of channels supported
13.             float4 tangent   : TANGENT;   // The tangent vector in Model Space (used for normal mapping).
14.             float4 color     : COLOR;     // Per-vertex color
15.         };

Code (CSharp):

1. void vert(inout appdata v, out Input o) {
2.             UNITY_INITIALIZE_OUTPUT(Input, o);
3.            
4.             o.uv_MainTex = v.texcoord.xy;
5.  
6.             o.MyCustomThing1 = v.texcoord3.x - frac(v.texcoord3.x);
7.             o.MyCustomThing2 = frac(v.texcoord3.x);
8.         }

Code (CSharp):

1. struct Input {
2.             float2 uv_MainTex;
3.             float MyCustomThing1;
4.             float MyCustomThing2;
5. }

Code (CSharp):

1. void surf(Input IN, inout SurfaceOutputStandard o) {
2.            
3.             float x1 = IN.MyCustomThing1;
4.             float x2 = IN.MyCustomThing2;
5. }

 

thanks,,i think:
textcoord = uv = mesh
so,textcoord1 == submesh0???