From 88e674850f6eae56ea8cac2d735efad4518f0a14 Mon Sep 17 00:00:00 2001
From: yum <yum.food.vr@gmail.com>
Date: Mon, 4 Nov 2024 16:28:58 -0800
Subject: Add fog normals

Uses iquilez's directional derivative model and a simplified lighting
model. Lighting is evaluated at each sample.
---
 pbr.cginc | 12 ++++++++++++
 1 file changed, 12 insertions(+)

(limited to 'pbr.cginc')

diff --git a/pbr.cginc b/pbr.cginc
index 68e26e9..770db07 100644
--- a/pbr.cginc
+++ b/pbr.cginc
@@ -105,6 +105,18 @@ float3 BoxProjection (
 	return direction;
 }
 
+float4 getIndirectDiffuse(v2f i, float4 vertexLightColor) {
+  float4 diffuse = vertexLightColor;
+#if defined(FORWARD_BASE_PASS)
+#if defined(LIGHTMAP_ON)
+  diffuse.xyz = DecodeLightmap(UNITY_SAMPLE_TEX2D(unity_Lightmap, i.uv2));
+#else
+  diffuse.xyz += max(0, BetterSH9(float4(0, 0, 0, 1)));
+#endif
+#endif
+  return diffuse;
+}
+
 float4 getIndirectDiffuse(v2f i, float4 vertexLightColor, float3 normal) {
   float4 diffuse = vertexLightColor;
 #if defined(FORWARD_BASE_PASS)
-- 
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