From e19bf2d07048bf1b6a9c636380c52f44336c81e8 Mon Sep 17 00:00:00 2001
From: yum <yum.food.vr@gmail.com>
Date: Tue, 24 Mar 2026 00:16:32 -0700
Subject: Pull in letter grid gimmick from 2ner

---
 3ner.cginc | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to '3ner.cginc')

diff --git a/3ner.cginc b/3ner.cginc
index 13ab7fa..5f7f46e 100755
--- a/3ner.cginc
+++ b/3ner.cginc
@@ -20,6 +20,7 @@
 #include "ray_marching.cginc"
 #include "vertex.cginc"
 #include "matcap.cginc"
+#include "letter_grid.cginc"
 
 v2f vert(appdata v) {
 #if defined(SHADOW_CASTER_PASS) && !defined(_SHADOW_CASTER)
@@ -311,6 +312,13 @@ float4 frag(v2f i, uint facing : SV_IsFrontFace
 
   Pbr pbr = getPbr(i);
 
+#if defined(_LETTER_GRID)
+  LetterGridOutput letter_grid_output = LetterGrid(i);
+  pbr.albedo.rgb = lerp(pbr.albedo.rgb, letter_grid_output.albedo, letter_grid_output.albedo.a);
+  pbr.metallic = lerp(pbr.metallic, letter_grid_output.metallic, letter_grid_output.albedo.a);
+  pbr.roughness = lerp(pbr.roughness, letter_grid_output.roughness, letter_grid_output.albedo.a);
+#endif
+
   [branch]
   if (_Mode == 1) {
     clip(pbr.albedo.a - 0.5);
@@ -322,6 +330,11 @@ float4 frag(v2f i, uint facing : SV_IsFrontFace
 
   BrdfData bd;
   float4 lit = brdf(pbr, light_data, bd);
+
+#if defined(_LETTER_GRID)
+  lit.rgb += letter_grid_output.emission * letter_grid_output.albedo.a;
+#endif
+
   return apply_debug_view(i, pbr, light_data, bd, lit);
 }
 
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