折射效果shader,类似于水珠效果

晃晃

以下为ImageRefractionEffect.shader代码：

Shader "Image Effects/Refraction"

{

Properties

{

  _SpeedStrength ("Speed (XY), Strength (ZW)", Vector) = (1, 1, 1, 1)

  _RefractTexTiling ("Refraction Tilefac", Float) = 1

  _RefractTex ("Refraction (RG), Colormask (B)", 2D) = "bump" {}

  _Color ("Color (RGB)", Color) = (1, 1, 1, 1)

  _MainTex ("Base (RGB) DON`T TOUCH IT! ", RECT) = "white" {}

}

SubShader

{

  Pass

  {

   ZTest Always Cull Off ZWrite Off

   Fog{Mode off}

   CGPROGRAM

   #pragma vertex vert_img

   #pragma fragment frag

   #pragma fragmentoption ARB_precision_hint_fastest

   #include "UnityCG.cginc"

   uniform samplerRECT _MainTex;

   uniform sampler2D _RefractTex;

   uniform float4 _SpeedStrength;

   uniform float _RefractTexTiling;

   uniform float4 _Color;

   float4 frag (v2f_img i) : COLOR

   {

    float2 refrtc = i.uv*_RefractTexTiling;

    float4 refract = tex2D(_RefractTex, refrtc+_SpeedStrength.xy*_Time.x);

    refract.rg = refract.rg*2.0-1.0;

    float4 original = texRECT(_MainTex, i.uv+refract.rg*_SpeedStrength.zw);

    float4 output = lerp(original, original*_Color, refract.b);

    output.a = original.a;

    return output;

   }

   ENDCG

  }

}

Fallback off

}

以下为C#代码：

using UnityEngine;

[ExecuteInEditMode]

[AddComponentMenu("Image Effects/Image Refraction")]

public class ImageRefractionEffect : SlinImageEffectBase

{

// Called by camera to apply image effect

void OnRenderImage (RenderTexture source, RenderTexture destination)

{

  ImageEffects.BlitWithMaterial(material, source, destination);

}

}

晃晃

谢谢楼主，真是太实用了

晃晃

此地無銀。。。