自定义 PBR（MetallicBased）材质

说明：

    带有法线贴图，带有metallic based PBR map。基于物理渲染，可完善的使用mixedlighting。
包含三张贴图

Albedo：

RGBA

Materialmap：

R=预留

G=roughness

B=预留

A=metallic

NormalMap:

RGB=NormalMap

代码块：

物理材质：

Shader "WH40K/Static/Static_Metal_200" {Properties {_Color ("Color", Color) = (1,1,1,1)_MainTex ("Albedo (RGB)", 2D) = "white" {}_Glossiness ("Smoothness", Range(0,1)) = 0.7_MaterialMap ("Material", 2D) = "white" {}_BumpMap ("NormalMap", 2D) ="bump"{}}SubShader {Tags { "RenderType"="Opaque" }LOD 200CGPROGRAM// Physically based Standard lighting model, and enable shadows on all light types#pragma surface surf Standard fullforwardshadows// Use shader model 3.0 target, to get nicer looking lighting#pragma target 3.0sampler2D _MainTex;sampler2D _MaterialMap;sampler2D _BumpMap;struct Input {float2 uv_MainTex;float2 uv_MaterialMap;float2 uv_BumpMap;};half _Glossiness;half _Metallic;fixed4 _Color;// Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.// See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.// #pragma instancing_options assumeuniformscalingUNITY_INSTANCING_CBUFFER_START(Props)// put more per-instance properties hereUNITY_INSTANCING_CBUFFER_ENDvoid surf (Input IN, inout SurfaceOutputStandard o) {// Albedo comes from a texture tinted by colorfixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;fixed4 m = tex2D (_MaterialMap, IN.uv_MaterialMap);o.Albedo = c.rgb;o.Smoothness = (1-m.g)*_Glossiness;o.Metallic = m.a;o.Alpha = c.a;o.Normal = UnpackNormal (tex2D (_BumpMap, IN.uv_BumpMap));}ENDCG}FallBack "Diffuse"
}

非物理材质

Shader "WH40K/Static/Static_Metal_100" {Properties {_Color ("Color", Color) = (1,1,1,1)_MainTex ("Albedo (RGB)", 2D) = "white" {}_Glossiness ("Smoothness", Range(0,1)) = 0.7_MaterialMap ("Material", 2D) = "white" {}_BumpMap ("NormalMap", 2D) ="bump"{}}SubShader {Tags { "RenderType"="Opaque" }LOD 100CGPROGRAM#pragma surface surf WH40KBlinnPhong exclude_path:prepass  noforwardadd halfasview interpolateview//定义变量sampler2D _MainTex;sampler2D _MaterialMap;sampler2D _BumpMap;fixed _Glossiness;fixed _Gloss;half _Specular;fixed4 _Color;//定义光照模型inline fixed4 WH40KBlinnPhongLight (SurfaceOutput s, half3 viewDir, UnityLight light){half3 h = normalize (light.dir + viewDir);fixed diff = max (0, dot (s.Normal, light.dir));float nh = max (0, dot (s.Normal, h));float spec = pow (nh, s.Specular*128.0) * s.Gloss;fixed4 c;//加0.1来对冲没有环境光的色差c.rgb = s.Albedo * light.color * diff + light.color  * spec+0.1;c.a = s.Alpha;return c;}inline fixed4 LightingWH40KBlinnPhong (SurfaceOutput s, half3 viewDir, UnityGI gi){fixed4 c;c = WH40KBlinnPhongLight (s, viewDir, gi.light);#if defined(DIRLIGHTMAP_SEPARATE)#ifdef LIGHTMAP_ONc += WH40KBlinnPhongLight (s, viewDir, gi.light2);#endif#ifdef DYNAMICLIGHTMAP_ONc += WH40KBlinnPhongLight (s, viewDir, gi.light3);#endif#endif#ifdef UNITY_LIGHT_FUNCTION_APPLY_INDIRECTc.rgb += s.Albedo * gi.indirect.diffuse;#endifreturn c;}inline void LightingWH40KBlinnPhong_GI (SurfaceOutput s,UnityGIInput data,inout UnityGI gi){gi = UnityGlobalIllumination (data, 1.0, s.Normal);}inline fixed4 LightingWH40KBlinnPhong_PrePass (SurfaceOutput s, half4 light){fixed spec = light.a * s.Gloss;fixed4 c;c.rgb = (s.Albedo * light.rgb + light.rgb * _SpecColor.rgb * spec);c.a = s.Alpha;return c;}// Use shader model 3.0 target, to get nicer looking lighting//#pragma target 3.0//定义 Input 结构体struct Input {float2 uv_MainTex;float2 uv_BumpMap;};// Add instancing support for this shader. You need to check 'Enable Instancing' on materials that use the shader.// See https://docs.unity3d.com/Manual/GPUInstancing.html for more information about instancing.// #pragma instancing_options assumeuniformscalingUNITY_INSTANCING_CBUFFER_START(Props)// put more per-instance properties hereUNITY_INSTANCING_CBUFFER_ENDvoid surf (Input IN, inout SurfaceOutput o) {fixed4 c = tex2D (_MainTex, IN.uv_MainTex) * _Color;fixed4 m = tex2D (_MaterialMap, IN.uv_MainTex);o.Albedo = tex2D (_MainTex, IN.uv_MainTex).rgb;o.Specular = m.g;o.Gloss = (1-m.g)*_Glossiness;o.Alpha = c.a;o.Normal = UnpackNormal (tex2D (_BumpMap, IN.uv_BumpMap));}ENDCG}FallBack "Diffuse"
}

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Unity Custom PBR材质

自定义 PBR（MetallicBased）材质

说明：

Albedo：

Materialmap：

NormalMap:

代码块：

物理材质：

非物理材质

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NormalMap:

代码块：

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