城ラマで水面を動かしているシェーダ。[Sample@vimeo](https://vimeo.com/158787504)

UVScroll.shader

Shader "Shirorama/Transparent UVScroll For Water" {
	Properties {
		_Color ("Color", Color) = (1,1,1,1)
		_MainTex ("Albedo (RGB)", 2D) = "white" {}
		_Glossiness ("Smoothness", Range(0,1)) = 0.5
		_Metallic ("Metallic", Range(0,1)) = 0.0
        _SpeedX ("Scroll Speed X", Float ) = 1.0
        _SpeedY ("Scroll Speed Y", Float ) = 1.0
	}
	SubShader {
		Tags { "Queue"="Transparent" "RenderType"="Transparent" }
		LOD 200
		
		CGPROGRAM
		// Physically based Standard lighting model, and enable shadows on all light types
		#pragma surface surf Standard alpha

		// Use shader model 3.0 target, to get nicer looking lighting
		#pragma target 3.0

		sampler2D _MainTex;

		struct Input {
			float2 uv_MainTex;
		};

		half _Glossiness;
		half _Metallic;
		fixed4 _Color;
        float _SpeedX;
        float _SpeedY;

		void surf (Input IN, inout SurfaceOutputStandard o) {
			// Albedo comes from a texture tinted by color
            
            
            float2 uvm = IN.uv_MainTex;
            uvm.x = uvm.x + _SpeedX * _Time;
            uvm.y = uvm.y + _SpeedY * _Time;
			float4 c = tex2D (_MainTex, uvm) * _Color;
			o.Albedo = c.rgb;
			// Metallic and smoothness come from slider variables
			o.Metallic = _Metallic;
			o.Smoothness = _Glossiness;
			o.Alpha = c.a;
		}
		ENDCG
	} 
	FallBack "Diffuse"
}