surface shader question

Unity Engine
1

I write a surface shader is as follows:
shader “Sbin/surface/002”

{

properties

{
_MainTex(“main tex”,2d)=“white”{}
}
subshader
{
Tags { “RenderType” = “Opaque” }

CGPROGRAM

#pragma surface surf Lambert

struct Input

{
float2 uv_MainTex;
};

sampler2D _MainTex;

void surf(Input IN, inout SurfaceOutput o)

{

o.Albedo=tex2D(_MainTex,IN.uv_MainTex).rgb;

}

ENDCG
}

fallback “diffuse”

}

/*
When I changed the struct Input of members called other times, such as: uv_TexMain
Will be a mistake, ask why. In addition, the properties _MainTex to _TexMain a mistake, do _MainTex are keywords?
*/

2

If you change the input struct to uv_TexMain, you’ll also have to change the properties to have a _TexMain texture and add a sampler2D _TexMain and a tex2D _TexMain.

3

Yes, I have done as you said, the compiler has passed, can not map display. Please copy the code and then test it, thank you

//Is the member name of the structure associated with the property name ?
//I tested the vertex shader and fragment shader, in both the shader, structure member names and property’s names there is no correlation

//English is not very good, I hope to forgive

=============================
shader “Sbin/surface/002”

{

properties

{
_TexMain(“main tex”,2d)=“white”{}
}
subshader
{
Tags { “RenderType” = “Opaque” }

CGPROGRAM

#pragma surface surf Lambert

struct Input

{
float2 uv_tm; //changed to uv_tm
};

sampler2D _TexMain;

void surf(Input IN, inout SurfaceOutput o)

{

o.Albedo=tex2D(_TexMain,IN.uv_tm).rgb;

}

ENDCG
}

fallback “diffuse”

}

4

What do you mean by cannot map display?

Can you give screenshots of the object and the material inspector?

5

cannot map display == Can not display the texture map

Is the member name of the structure associated with the property name ?
I tested the vertex shader and fragment shader, in both the shader, structure member names and property’s names there is no correlation

English is not very good, I hope to forgive