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Shader "Test/LightmapSurface" {
Properties {
_MainTex("Texture", 2D) = "white" {}
[NoScaleOffset] _AddTex("Add texture", 2D) = "white" {}
[KeywordEnum(None, Add, Multiply, Screen)] _Overlay("Overlay mode", Float) = 0
}
SubShader {
Tags { "RenderType" = "Opaque" }
CGPROGRAM
#pragma surface surf Lambert vertex:vert noforwardadd noambient
#pragma multi_compile _ LIGHTMAP_ON
#pragma multi_compile _OVERLAY_NONE _OVERLAY_ADD _OVERLAY_MULTIPLY _OVERLAY_SCREEN
struct Input
{
float2 uv_MainTex;
float2 lm;
};
sampler2D _MainTex;
// sampler2D unity_Lightmap;
// float4 unity_LightmapST;
sampler _AddTex;
void vert(inout appdata_full v, out Input o)
{
UNITY_INITIALIZE_OUTPUT(Input, o);
o.lm = v.texcoord1.xy * unity_LightmapST.xy + unity_LightmapST.zw;
}
void surf(Input IN, inout SurfaceOutput o) {
fixed3 c = tex2D(_MainTex, IN.uv_MainTex).rgb;
o.Albedo = c.rgb;
fixed3 ad = tex2D(_AddTex, IN.lm).rgb;
# ifdef LIGHTMAP_ON
fixed3 lm = UNITY_SAMPLE_TEX2D(unity_Lightmap, IN.lm);
o.Albedo *= lm;
#if _OVERLAY_ADD
o.Albedo += ad;
#elif _OVERLAY_MULTIPLY
o.Albedo *= ad;
#elif _OVERLAY_SCREEN
o.Albedo = (1-(1- o.Albedo)*(1-ad));
#endif
#endif
}
ENDCG
}
Fallback "Diffuse"
}
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