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标题: shader简单模拟流水效果 [打印本页]

作者: 烟雨 时间: 2016-5-30 01:19
标题: shader简单模拟流水效果

Shader "czm/water"{

Properties{

_MainTex("MainTex",2D)="white"{}//
_NoiseTex("NoiseTex",2D)="white"{}//
  _Size("NoiseSize",Range(0,1))=0.1
  //
  _Speed("WaterSpeed",Range(0,1))=1
_Scale("WaveScale",Range(0,2))=1
  _Alpha("WaveAlpha", float)=1
  _K("K",Range(0,1))=0.2
}
SubShader {
     Tags { "Queue"="Transparent" "IgnoreProjector"="True" "RenderType"="Transparent" }
Blend SrcAlpha One
Cull Off
Lighting Off
ZWrite Off
Pass {
Tags { "LightMode" = "Vertex" }
CGPROGRAM
#pragma vertex vertPart
#pragma fragment fragPart
#include "unitycg.cginc"
sampler2D _MainTex;
float4 _MainTex_ST;
   sampler2D _NoiseTex;
   float4 _NoiseTex_ST;
  float  _Size;
  float  _Speed;
float  _Scale;
float  _Alpha;
float _K;
struct vs {
float4  pos

OSITION;
float2  uv : TEXCOORD0;
   float4 color : color;
};
vs vertPart (appdata_full v)
{
      vs o;
      o.pos = mul(UNITY_MATRIX_MVP,v.vertex);
      o.uv = TRANSFORM_TEX(v.texcoord,_MainTex);
   o.color=v.color;
      return o;
}
fixed4 fragPart(vs i) : COLOR {
float2 noiseUV=i.uv;
noiseUV+=_Time*_Speed;//流动速度
      fixed2 noiseCol = tex2D(_NoiseTex,noiseUV);
      fixed2 mainUV=i.uv;//主uv
mainUV+=noiseCol*_K*_Size*_Scale;
      fixed4 mainCol = tex2D(_MainTex,mainUV);
      return mainCol*i.color*fixed4(1,1,1,_Alpha);
         }
ENDCG
}

}
FallBack "Diffuse"

}

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