Unity光线穿墙问题

2019-04-14 12:21发布

站内文章 / 模拟电子
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class="markdown_views prism-atom-one-light"> 先来一张“惊世骇俗”的效果图，这是最后效果。
在这里插入图片描述
今天自己在家做开发，效果觉得还能忽悠过去，但是人物走在墙边的时候，忽然发现，隔壁的房间跟着亮了…这让我很慌。
所以下面这个例子是为了解决点光源穿透的问题。
在这里插入图片描述
于是时好解决一下咯…纹理还没有加上，但是光是不会透过去 了，大家可以作为参考哈，下面是第一第效果图的完整代码。后面我会把它的升级版(加上法线凹凸效果的)再发出来… Shader "Custom/DSPShader" { Properties { //主图 _MainTex("MainTex",2D)="white"{} //漫反射 _Diffuse("Diffuse",Color)=(1,1,1,1) //高光颜 {MOD} _SpecularColor ("SpecularColor", Color) = (1,1,1,1) //高光比例 _SpecularScale ("_SpecularScale", range(1,32)) = 2 } SubShader { Pass { Tags{ "LightMode" = "Forwardbase" } CGPROGRAM #pragma vertex vert #pragma fragment frag #pragma multi_compile_fwdbase #include "unitycg.cginc" #include "lighting.cginc" #include "autolight.cginc" fixed4 _SpecularColor; float _SpecularScale; sampler2D _MainTex; float4 _MainTex_ST; float4 _Diffuse; struct a2v { float4 vertex : POSITION; float2 uv : TEXCOORD0; float3 normal:NORMAL; }; struct v2f{ float4 pos:POSITION; float3 normal:NORMAL; float4 vertex:TEXCOORD2; float2 uv:TEXCOORD3; SHADOW_COORDS(0) }; //顶点着 {MOD}器 v2f vert(a2v v) { v2f o; o.pos = UnityObjectToClipPos(v.vertex); o.normal = normalize(v.normal); o.vertex = v.vertex; o.uv = v.uv; TRANSFER_SHADOW(o) return o; } //片元着 {MOD}器 fixed4 frag(v2f v):COLOR { float3 wpos = mul(unity_ObjectToWorld, v.vertex).xyz; UNITY_LIGHT_ATTENUATION(atten, IN, wpos) //5. //漫反射 fixed3 ambient = UNITY_LIGHTMODEL_AMBIENT.xyz; fixed3 worldNormal = normalize(mul(v.normal,(float3x3)unity_WorldToObject)); fixed3 worldLightDir = normalize(_WorldSpaceLightPos0.xyz); fixed3 diffuse = _LightColor0.rgb*_Diffuse.rgb*saturate(dot(worldNormal,worldLightDir)); //纹理贴图 float4 tex= tex2D(_MainTex,v.uv); //高光反射 float3 worldVector = normalize(WorldSpaceViewDir(v.vertex)); float3 Specular = 2 * dot(worldNormal, worldLightDir)*worldNormal - worldLightDir; //phong float3 HeightLight = normalize(worldVector + worldLightDir); //blinphong float specScale = pow(saturate(dot(Specular, worldVector)), _SpecularScale); //phong specScale = pow(saturate(dot(HeightLight, worldNormal)), _SpecularScale); //blinphong Specular+=_SpecularColor*specScale; //点光记算 float3 pointLight = Shade4PointLights(unity_4LightPosX0, unity_4LightPosY0, unity_4LightPosZ0, unity_LightColor[0].rgb, unity_LightColor[1].rgb, unity_LightColor[2].rgb, unity_LightColor[3].rgb, unity_4LightAtten0, wpos, worldNormal); //把上面得到的值在这里做计算吧 diffuse *=Specular; diffuse = tex*diffuse; diffuse.rgb += pointLight; diffuse.rgb *= atten; //6. diffuse += UNITY_LIGHTMODEL_AMBIENT; return float4(diffuse,1); } ENDCG } //下面的用于接收与产生点光原的阴影Shader Pass { Tags{ "Lightmode" = "Forwardadd" } Blend one one CGPROGRAM #pragma vertex vert #pragma fragment frag #include "lighting.cginc" #include "autolight.cginc" //阴影主要来源于这句 #pragma multi_compile_fwdadd_fullshadows struct a2v { float4 vertex : POSITION; float2 uv : TEXCOORD0; float3 normal:NORMAL; }; struct v2f { float4 pos:POSITION; float3 normal:NORMAL; float4 vertex:TEXCOORD2; SHADOW_COORDS(0) }; v2f vert(a2v v) { v2f o; o.pos = UnityObjectToClipPos(v.vertex); o.normal = normalize(v.normal); o.vertex = v.vertex; TRANSFER_SHADOW(o) return o; } fixed4 frag(v2f i) :COLOR { float3 wpos = mul(unity_ObjectToWorld, i.vertex).xyz; UNITY_LIGHT_ATTENUATION(atten, i, wpos) //漫反射 float3 worldNormal = UnityObjectToWorldNormal(i.normal); float3 worldLight = normalize(_WorldSpaceLightPos0).xyz; float ndotl = saturate(dot(worldNormal, worldLight)); fixed4 diffuse = _LightColor0*ndotl; //衰减 diffuse.rgb *= atten; return diffuse; } ENDCG } } Fallback "Diffuse" }

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