Scripting basic shader in Unity 3D

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Hey guys, In this tutorial, I will show you guys how to script basic shader in unity. This one doesn't include physically base shaders. I will make tutorials on that in my later tutorials.


Here is the script used in this video :

Shader "Tutorial/basicShaderOne" // folder name
{
    Properties {
        _Color ("Main Color", Color) = (1,1,1,1)
        AmColor("Ambient Color", Color) = (1, 1, 1, 1)
        Multiplier("Color Multiplier", Range(0, 10)) = 2.5 
    }
    SubShader {
        Tags { "RenderType"="Opaque" }
        LOD 200
        
        CGPROGRAM
        #pragma surface surf Lambert 
        
        float4 _Color;
        float4 AmColor;
        float Multiplier;

        struct Input {
            float2 uv_MainTex;
        };

        void surf (Input IN, inout SurfaceOutput o) {
            float4 c = pow((_Color + AmColor), Multiplier); // pow(x, y), result is y multiplies x 
            o.Albedo = c.rgb;
            o.Alpha = c.a;
        }
        ENDCG
    } 
    FallBack "Diffuse"
}

Basically shader has two divisions "Properties" and "SubShader". Inside the Properties, we give variables a value which we are going to declare inside SubShader. Leave the rest as it is other than the codes I deleted in the video because these are house keeping stuffs.

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