unity 2d遮挡透明显示整理

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unity 2d遮挡透明显示整理

游戏里面常常用到几种人物遮挡的透明显示在这里也给大家整理一下几种的方式。

这里写图片描述原图

图片中火枪手被黑色的图片遮挡了一边，现在想让它被遮挡的另一边也显示出来。

Shader "Custom/Mask VisibleColor" {     Properties {            _NotVisibleColor ("NotVisibleColor (RGB)", Color) = (0.3,0.3,0.3,1)            _MainTex ("Base (RGB)", 2D) = "white" {}        }        SubShader {            Tags { "Queue" = "Geometry+500" "RenderType"="Opaque" }            LOD 200            Pass {                ZTest Greater                Lighting Off                ZWrite Off                Color [_NotVisibleColor]                Blend SrcAlpha OneMinusSrcAlpha                SetTexture [_MainTex] { ConstantColor [_NotVisibleColor] combine constant * texture }            }            Pass {                ZTest LEqual                Material {                    Diffuse (1,1,1,1)                    Ambient (1,1,1,1)                }                Lighting Off                 Blend SrcAlpha OneMinusSrcAlpha                SetTexture [_MainTex] { combine texture }             }        }         FallBack "Diffuse"}

效果图如下：
这里写图片描述

亦可用顶点渲染的方式

Shader "Custom/Mask Color" {    Properties {        _NotVisibleColor ("NotVisibleColor (RGB)", Color) = (0.3,0.3,0.3,1)        _MainTex ("Back Texture", 2D) = "white" {}    }    SubShader {        Tags { "Queue" = "Transparent" }        Pass {            Cull Off            Lighting Off            ZWrite Off            Fog { Mode Off }            Offset -1, -1            ZTest   Greater            Blend SrcAlpha OneMinusSrcAlpha            CGPROGRAM            #pragma vertex vert            #pragma fragment frag            #include "UnityCG.cginc"            struct appdata_vert {                float4 vertex : POSITION;                float4 texcoord : TEXCOORD0;            };            uniform sampler2D _MainTex;            uniform float4 _NotVisibleColor;            struct v2f {                float4 pos : SV_POSITION;                float2  uv;            };            v2f vert (appdata_vert v) {                v2f o;                o.pos = mul (UNITY_MATRIX_MVP, v.vertex);                o.uv=v.texcoord;                return o;            }            float4 frag (v2f i) : COLOR {                half4 texcol = tex2D( _MainTex, i.uv );                if(texcol.a != 0){                    texcol.xyzw = _NotVisibleColor.xyzw;                }                return texcol;            }        ENDCG        }        Pass        {            Cull Off            Lighting Off            ZWrite Off            ZTest LEqual            Fog { Mode Off }            Offset -1, -1            ColorMask RGB            AlphaTest Greater .01            Blend SrcAlpha OneMinusSrcAlpha            ColorMaterial AmbientAndDiffuse            SetTexture [_MainTex]            {                Combine Texture * Primary            }        }    }}

如图：
这里写图片描述

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