zoukankan      html  css  js  c++  java
  • Unity shader学习之Grab Pass实现玻璃效果

    GrabPass可将当前屏幕的图像绘制在一张纹理中,可用来实现玻璃效果。

    转载请注明出处:http://www.cnblogs.com/jietian331/p/7201324.html

    shader如下:

    // Upgrade NOTE: replaced 'mul(UNITY_MATRIX_MVP,*)' with 'UnityObjectToClipPos(*)'
    
    Shader "Custom/Glass"
    {
        Properties
        {
            _NormalMap("Normal Map", 2D) = "bump" {}
            _Distortion("Distortion", Range(0, 100)) = 50
        }
    
        SubShader
        {
            Tags
            {
                "Queue" = "Transparent"
                "RenderType" = "Transparent"
            }
    
            GrabPass { "_GrabTex" }
    
            Pass
            {
                CGPROGRAM
                #pragma vertex vert
                #pragma fragment frag
    
                #include "UnityCG.cginc"
    
                sampler2D _GrabTex;
                float4 _GrabTex_TexelSize;
                sampler2D _NormalMap;
                float _Distortion;
    
                struct appdata
                {
                    float4 vertex : POSITION;
                    float2 uv : TEXCOORD0;
                };
    
                struct v2f
                {
                    float4 pos : SV_POSITION;
                    float2 uv : TEXCOORD0;
                    float4 scrPos : TEXCOORD1;
                };
    
                v2f vert(appdata v)
                {
                    v2f o;
                    o.pos = UnityObjectToClipPos(v.vertex);
                    o.uv = v.uv;
                    o.scrPos = ComputeGrabScreenPos(o.pos);
                    return o;
                }
    
                fixed4 frag(v2f i) : SV_TARGET
                {
                    float3 bump = UnpackNormal(tex2D(_NormalMap, i.uv));
                    float2 offset = bump.xy * _GrabTex_TexelSize.xy * _Distortion;
                    fixed4 albedo = tex2D(_GrabTex, (i.scrPos.xy + offset) / i.scrPos.w);
                    return albedo;
                }
    
                ENDCG
            }
        }
    }

    效果如下:

  • 相关阅读:
    如何设置eclipse默认打开文件方式
    CalendarUtil.java
    排班管理
    jquery ajax 发送邮件例子
    C# 打开文件夹和保存文件夹
    C# QQ邮箱授权码发送邮件
    IIS7 http自动跳转到https
    C# 关键字替换
    C# webBrowser 控件赋值
    C# Post提交数据
  • 原文地址:https://www.cnblogs.com/jietian331/p/7201324.html
Copyright © 2011-2022 走看看