From bfc062d1f056f13dcc43d50c995124288fef5967 Mon Sep 17 00:00:00 2001
From: yum <yum.food.vr@gmail.com>
Date: Mon, 15 Jul 2024 14:23:47 -0700
Subject: Add clearcoat mask

---
 pbr.cginc | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

(limited to 'pbr.cginc')

diff --git a/pbr.cginc b/pbr.cginc
index 7b37d86..a847414 100644
--- a/pbr.cginc
+++ b/pbr.cginc
@@ -4,10 +4,11 @@
 #include "UnityPBSLighting.cginc"
 #include "AutoLight.cginc"
 
-#include "MochieStandardBRDF.cginc"
-
+#include "globals.cginc"
+#include "filament_math.cginc"
 #include "globals.cginc"
 #include "interpolators.cginc"
+#include "MochieStandardBRDF.cginc"
 #include "poi.cginc"
 
 #if defined(_LTCGI)
@@ -262,6 +263,20 @@ float4 getLitColor(
         indirect_light).xyz;
 #endif
 
+#if defined(_CLEARCOAT)
+  half3 half_dir = Unity_SafeNormalize(half3(direct_light.dir) + view_dir);
+  half lh = saturate(dot(direct_light.dir, half_dir));
+  half cc_nh = saturate(dot(i.normal, half_dir));
+  float clearcoat = FilamentClearcoat(
+      _Clearcoat_Roughness,
+      _Clearcoat_Strength,
+      cc_nh,
+      lh,
+      half_dir);
+  float cc_mask = _Clearcoat_Mask.SampleGrad(linear_repeat_s, i.uv, ddx(i.uv.x), ddy(i.uv.y));
+  pbr.rgb += clearcoat * saturate(dot(i.normal, direct_light.dir)) * cc_mask * 10;
+#endif
+
   return float4(pbr.rgb, albedo.a);
 }
 
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