Convert Diffuse (Lambert) shader in Standard with alpha cutout

Hi all
I'm trying to convert a Diffuse Shader i got in a Standard one. Here's my code, with the commented lines that are the one i have tryed to add for the conversion:

Code (CSharp):

1. Shader "Custom/Diffuse Fog" {
2.  
3.     Properties
4.     {
5.         _Color("Main Color", Color) = (1,1,1,1)
6.         _MainTex("Base (RGB) Trans (A)", 2D) = "white" {}
7.         _Cutoff("Alpha cutoff", Range(0,1)) = 0.5
8.     }
9.  
10.         SubShader
11.         {
12.             Cull Off
13.             Tags {"Queue" = "AlphaTest" "IgnoreProjector" = "True" "RenderType" = "TransparentCutout"}          
14.             LOD 200
15.  
16.         CGPROGRAM
17.         #pragma target 3.0
18.         #pragma surface surf Lambert alphatest:_Cutoff addshadow
19.         //#pragma surface surf Standard alphatest:_Cutoff addshadow
20.  
21.         sampler2D _MainTex;
22.         fixed4 _Color;
23.  
24.         UNITY_INSTANCING_BUFFER_START(Props)
25.         UNITY_INSTANCING_BUFFER_END(Props)
26.  
27.         struct Input
28.         {
29.             float2 uv_MainTex;
30.         };
31.  
32.         void surf(Input IN, inout SurfaceOutput o)
33.         //void surf(Input IN, inout SurfaceOutputStandard o)
34.         {
35.             fixed4 color = tex2D(_MainTex, IN.uv_MainTex) * _Color;
36.             /*
37.             here some code, not interesting at the moment
38.             */
39.             o.Albedo = color;
40.             o.Alpha = color.a;
41.         }
42.         ENDCG
43.         }
44.  
45.             Fallback "Transparent/Cutout/VertexLit"
46. }

In the immages below you can see the difference between the two versions:


Diffuse


Standard

I can't understand why the Standard version returns color so desaturated.

Do you know why it happens?

Thankyou in advance

 

The Standard shader assumes every material has some specularity (because in the real world it does). If you don’t set a Smoothness in a Standard Surface Shader it’ll default to a Smoothness of 0.0, or a fully rough surface. Rough surfaces tend to be fairly desaturated in appearance (think powder) and the Standard shader with a Smoothness of 0.0 mimics some of this look. You probably want to actually set the Smoothness to something between 0.25 ~ 0.75. If it still doesn’t look how you want, you might want to try using the StandardSpecular shading model with the Surface Shader and additionally Specular color values to something very dark or black. Though if you choose to use black, at that point you probably want to switch back to Lambert.

 

Thank you for the reply. I will try adding the smoothness but, considering what you are saying, probably is better if I still use the Lambert Diffuse as the game have a toon like graphic.

Thank you again!