shader遮挡显示

来源：互联网发布：淘宝海外旗舰店真假编辑：程序博客网时间：2024/06/15 07:45

原理：根据深度建立两个pass，小于当前被挡物体的正常显示，大于被挡物体的返回一个纯色

Shader "Custom/XRay" {Properties {        _MainTex("Albedo", 2D) = "white" {}              _AfterColor ("After Color", Color) = (0.435, 0.851, 1, 0.419)  }SubShader {Tags { "RenderType"="transparent" }LOD 200pass{Tags { "LightMode" = "Vertex" } Blend One OneMinusSrcColor              Cull Off              Lighting Off              ZWrite Off              Ztest Greater CGPROGRAM#pragma vertex vert                #pragma fragment frag             #include "UnityCG.cginc"             float4 _AfterColor;             struct v2f            {            float4 pos : SV_POSITION;                   float2 uv : TEXCOORD0;             };            v2f vert (appdata_full v)             {            v2f o;            o.pos = mul(UNITY_MATRIX_MVP, v.vertex);            o.uv = v.texcoord;            return o;            };                        fixed4 frag(v2f i) : COLOR            {            return 2.0 * _AfterColor;            }ENDCG}pass{ZTest LEqual                 CGPROGRAM              #pragma vertex vert                #pragma fragment frag                #include "UnityCG.cginc"            sampler2D _MainTex;                float4 _MainTex_ST;                            struct v2f            {            float4 pos : SV_POSITION;            float4 uv : TEXCOORD0;            };                          v2f vert(appdata_base v)            {            v2f o;            o.pos = mul(UNITY_MATRIX_MVP, v.vertex);            o.uv = v.texcoord;            return o;            }                        fixed4 frag(v2f i) : COLOR            {            float4 texCol = tex2D(_MainTex, i.uv);            return texCol;            }            ENDCG}} FallBack "Diffuse"}

当然被挡住的部也可以做得更好看，比如显示成另外的贴图

Shader "Custom/XRay2" {Properties {_Color("Color", Color) = (1,1,1,1)              _MainTex("Albedo", 2D) = "white" {}            _AfterTex("_AfterTex", 2D) = "white" {}            _AfterColor ("After Color", Color) = (0.435, 0.851, 1, 0.419)   }SubShader {Tags { "RenderType"="transparent" }LOD 300Blend SrcAlpha OneMinusSrcAlpha   pass{Tags { "LightMode" = "Vertex" } Blend One OneMinusSrcColor              Cull Off              Lighting Off              ZWrite Off              Ztest Greater   CGPROGRAM#pragma vertex vert                #pragma fragment frag             #include "UnityCG.cginc"              sampler2D _AfterTex;             float4 _AfterColor;               struct v2f            {            float4 pos : SV_POSITION;                   float2 uv : TEXCOORD0;             };            v2f vert (appdata_base v)             {            v2f o;            o.pos = mul(UNITY_MATRIX_MVP, v.vertex);            half2 coord;            float3 normal = mul(UNITY_MATRIX_IT_MV, v.normal);            coord.x = normal.x;            coord.y = normal.y;            o.uv = coord * 0.5 + 0.5;            return o;            };                        fixed4 frag(v2f i) : COLOR            {            float4 col = tex2D(_AfterTex, i.uv);            return col * 2.0 * _AfterColor;            }ENDCG}pass{ZTest LEqual                 CGPROGRAM              #pragma vertex vert                #pragma fragment frag                #include "UnityCG.cginc"            sampler2D _MainTex;                float4 _MainTex_ST;                            struct v2f            {            float4 pos : SV_POSITION;            float4 uv : TEXCOORD0;            };                          v2f vert(appdata_base v)            {            v2f o;            o.pos = mul(UNITY_MATRIX_MVP, v.vertex);            o.uv = v.texcoord;            return o;            }                        fixed4 frag(v2f i) : COLOR            {            float4 texCol = tex2D(_MainTex, i.uv);            return texCol;            }            ENDCG}} }

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