GunSystem/Assets/shader/ParticleShadersVol1/SampleSceneAssets/Materials/LightBulb.shader

// Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'

Shader "Unlit/LightBulb"
{
	Properties
	{
		_MainTint("Main color tint", color) = (1,1,1,1)
	}
	SubShader
	{
		Tags { "RenderType"="Opaque" }
		LOD 100

		Pass
		{
			CGPROGRAM
			#pragma vertex vert
			#pragma fragment frag
			// make fog work
			#pragma multi_compile_fog
			
			#include "UnityCG.cginc"

			struct appdata
			{
				float4 vertex : POSITION;
			};

			struct v2f
			{
				UNITY_FOG_COORDS(1)
				float4 vertex : SV_POSITION;
			};

			float4 _MainTint;
			
			v2f vert (appdata v)
			{
				v2f o;
				o.vertex = UnityObjectToClipPos(v.vertex);
				return o;
			}
			
			fixed4 frag (v2f i) : SV_Target
			{
				// sample the texture
				fixed4 col = _MainTint;
				// apply fog
				UNITY_APPLY_FOG(i.fogCoord, col);				
				return col;
			}
			ENDCG
		}
	}
}