BubbleGlow.shader

Shader "Custom/BubbleGlow"
{
	Properties {
		_MainTex ("Base (RGB) Trans (A)", 2D) = "white" {}
		_RimColor("Rim Color", Color) = (1, 1, 1, 1)
		_RimPower("Rim Power", Range(1.0, 6.0)) = 3.0
	}

	SubShader {
		Tags {
			"Queue"="Transparent+1"
			"RenderType"="Transparent"
		}

		CGPROGRAM
		#pragma surface surf Lambert alpha

		sampler2D _MainTex;
		float4 _RimColor;
		float _RimPower;

		struct Input {
			float2 uv_MainTex;
			float3 viewDir;
		};

		void surf (Input IN, inout SurfaceOutput o)
		{
			fixed4 c = tex2D(_MainTex, IN.uv_MainTex);
			o.Albedo = c.rgb;
			half rim = 1.0 - saturate(dot(normalize(IN.viewDir), o.Normal));
			o.Alpha = pow(rim, _RimPower);
			o.Emission = _RimColor.rgb * o.Alpha;
		}
		ENDCG
	}
	Fallback "Transparent/Cutout/VertexLit"
}