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// Unity built-in shader source. Copyright (c) 2016 Unity Technologies. MIT license (see license.txt)
// Simplified Bumped Specular shader. Differences from regular Bumped Specular one:
// - no Main Color nor Specular Color
// - specular lighting directions are approximated per vertex
// - writes zero to alpha channel
// - Normalmap uses Tiling/Offset of the Base texture
// - no Deferred Lighting support
// - no Lightmap support
// - fully supports only 1 directional light. Other lights can affect it, but it will be per-vertex/SH.
Shader "VRChat/Mobile/Bumped Mapped Specular"
{
Properties
{
_Shininess ("Shininess", Range (0.03, 1)) = 0.078125
_MainTex ("Base (RGB) Gloss (A)", 2D) = "white" {}
[NoScaleOffset] _BumpMap ("Normalmap", 2D) = "bump" {}
}
SubShader
{
Tags { "RenderType"="Opaque" }
LOD 250
CGPROGRAM
#pragma surface surf MobileBlinnPhong exclude_path:prepass nolightmap noforwardadd halfasview interpolateview
inline fixed4 LightingMobileBlinnPhong (SurfaceOutput s, fixed3 lightDir, fixed3 halfDir, fixed atten)
{
fixed diff = max (0, dot (s.Normal, lightDir));
fixed nh = max (0, dot (s.Normal, halfDir));
fixed spec = pow (nh, s.Specular*128) * s.Gloss;
fixed4 c;
c.rgb = (s.Albedo * _LightColor0.rgb * diff + _LightColor0.rgb * spec) * atten;
UNITY_OPAQUE_ALPHA(c.a);
return c;
}
sampler2D _MainTex;
sampler2D _BumpMap;
half _Shininess;
struct Input
{
float2 uv_MainTex;
float4 color : COLOR;
};
void surf (Input IN, inout SurfaceOutput o)
{
fixed4 tex = tex2D(_MainTex, IN.uv_MainTex);
o.Albedo = tex.rgb * IN.color;
o.Gloss = tex.a;
o.Alpha = tex.a;
o.Specular = _Shininess;
o.Normal = UnpackNormal (tex2D(_BumpMap, IN.uv_MainTex));
}
ENDCG
}
FallBack "Mobile/VertexLit"
}
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