Unity 半透明shader以及扩展（外发光内发光）

本文主要是介绍Unity 半透明shader以及扩展（外发光内发光），希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

半透shader什么时候用到呢

1.如果主角被东西挡住，摄像机要不拉近要不把挡住的物体半透

2.很多游戏用到残影，一般残影都是半透的，然后慢慢透明

从左到右

1.使用标准材质球

2.使用半透材质球

3.使用外发光的半透材质球

4.使用内发光和外发光的材质球

shader比较简单直接上代码

这些都是surface shader

1.半透shader

Shader "Snoopy/AlphaBase"
{Properties{_MainTex("Particle Texture", 2D) = "white" {}_Color("Color", Color) = (1,1,1,1)}SubShader{Tags{ "Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent" }//这里加一个pass为了不会穿透叠自己的颜色，可以取消这个pass看看效果Pass{ZWrite OnColorMask 0}CGPROGRAM//使用alpha通道#pragma surface surf Lambert alphastruct Input{float2 uv_MainTex;};sampler2D _MainTex;fixed4 _Color;void surf(Input IN, inout SurfaceOutput o){float4 col = tex2D(_MainTex, IN.uv_MainTex);o.Albedo = col.rgb * _Color.rgb;o.Alpha = _Color.a;}ENDCG}Fallback "VertexLit"
}

2.外发光的半透shader

Shader "Snoopy/AlphaRimBase"
{Properties{_MainTex("Particle Texture", 2D) = "white" {}_Color("Color", Color) = (1,1,1,1)_RimColor("Rim Color", Color) = (0.5,0.5,0.5,0.5)_RimPower("Rim Power", Range(0.0,5.0)) = 2.5}SubShader{Tags{ "Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent" }Pass{ZWrite OnColorMask 0}CGPROGRAM#pragma surface surf Lambert alphastruct Input{float3 viewDir;float2 uv_MainTex;};sampler2D _MainTex;float4 _Color;float4 _RimColor;float _RimPower;void surf(Input IN, inout SurfaceOutput o){float4 col = tex2D(_MainTex, IN.uv_MainTex);o.Albedo = col.rgb * _Color.rgb;//边缘高光half rim = 1.0 - saturate(dot(normalize(IN.viewDir), o.Normal));o.Emission = _RimColor.rgb * pow(rim, 6 - _RimPower);o.Alpha = _Color.a;}ENDCG}Fallback "VertexLit"
}

3.外发光和内发光的半透shader

Shader "Snoopy/AlphaRimPro"
{Properties{_MainTex ("Particle Texture", 2D) = "white" {}_RimColor ("Rim Color", Color) = (0.5,0.5,0.5,0.5)_InnerColor ("Inner Color", Color) = (0.5,0.5,0.5,0.5)_InnerColorPower ("Inner Color Power", Range(0.0,1.0)) = 0.5_RimPower ("Rim Power", Range(0.0,5.0)) = 2.5_AlphaPower ("Alpha Rim Power", Range(0.0,8.0)) = 4.0_AllPower ("All Power", Range(0.0, 10.0)) = 1.0_InnerAlphaBase ("Inner Alpha Base", Range(0.0, 1.0)) = 1.0}SubShader{Tags{ "Queue" = "Transparent" "IgnoreProjector" = "True" "RenderType" = "Transparent" }Pass{// 开启深度写入ZWrite On// 设置颜色通道的写掩码，0为不写入任何颜色ColorMask 0}CGPROGRAM#pragma surface surf Lambert alphastruct Input{float3 viewDir;float2 uv_MainTex;INTERNAL_DATA};sampler2D _MainTex;float4 _RimColor;float _RimPower;float _AlphaPower;float _AlphaMin;float _InnerColorPower;float _AllPower;float4 _InnerColor;float _InnerAlphaBase;void surf (Input IN, inout SurfaceOutput o){float4 col = tex2D (_MainTex, IN.uv_MainTex);o.Albedo = col.rgb;half rim = 1.0 - saturate(dot (normalize(IN.viewDir), o.Normal));o.Emission = _RimColor.rgb * pow (rim, _RimPower)*_AllPower+(_InnerColor.rgb*2*_InnerColorPower);o.Alpha = (_InnerAlphaBase + (pow (rim, _AlphaPower))*_AllPower) * col.a;}ENDCG}
Fallback "VertexLit"
} 

工程下载地址

链接：https://pan.baidu.com/s/11LTiIW0lIosNqokpucq6SQ 
提取码：td8s 

这篇关于Unity 半透明shader以及扩展（外发光内发光）的文章就介绍到这儿，希望我们推荐的文章对编程师们有所帮助！

---