河流Shader

原地址：http://www.unity蛮牛.com/blog-2321-336.html

Shader "Custom/TextureEffect" {

    Properties {

        _MainTint("Diffuse Tint",Color) = (1,1,1,1)

        _MainTex ("Base (RGB)", 2D) = "white" {}

        _ScrollXSpeed("X Scroll Speed",Range(0,10)) = 2

        _ScrollYSpeed("Y Scroll Speed",Range(0,10)) = 2

}

    SubShader {

        Tags { "RenderType"="Opaque" }

        LOD 200
CGPROGRAM

        #pragma surface surf Lambert
sampler2D _MainTex;

        fixed4 _MainTint;

        fixed _ScrollXSpeed;

        fixed _ScrollYSpeed;
struct Input {

            float2 uv_MainTex;

        };
void surf (Input IN, inout SurfaceOutput o) {

            fixed2 scrolledUV = IN.uv_MainTex;

            fixed XScrollValue =_ScrollXSpeed * _Time;

            fixed YScrollValue =_ScrollYSpeed * _Time;
scrolledUV += fixed2(XScrollValue,YScrollValue);
half4 c = tex2D (_MainTex,scrolledUV);

            o.Albedo = c.rgb;

            o.Alpha = c.a;

        }

        ENDCG

    }

    FallBack "Diffuse"

}

河流Shader