Add glitter normal map override option

1 files changed, 9 insertions, 1 deletions

diff --git a/lighting.cginc b/lighting.cginc
index 4330562..8642c1d 100755
--- a/lighting.cginc
+++ b/lighting.cginc
@@ -285,9 +285,17 @@ void GetLighting(v2f i, Pbr pbr, out LightData data) {
 #else
   float glitter_roughness = pbr.roughness;
 #endif
+#if defined(_GLITTER_NORMAL_OVERRIDE)
+  float3 glitter_normal = _Glitter_Normal_Override.Sample(bilinear_clamp_s, i.uv01.xy) * 2 - 1;
+  glitter_normal = glitter_normal.xzy * float3(-1, 1, -1);
+  float3x3 tbn = tbn_from_normal_tangent(glitter_normal, i.tangent);
+#else
+  float3 glitter_normal = pbr.normal;
+  float3x3 tbn = pbr.tbn;
+#endif
   data.glitter = GetGlitterLighting(
       _Glitter_Amount, _Glitter_Roughness, _Glitter_Angular_Cells,
-      _Glitter_Filter_Size, UV_SCOFF(i, _Glitter_Mask_ST, _Glitter_UV_Channel), pbr.tbn, glitter_roughness, pbr.normal,
+      _Glitter_Filter_Size, UV_SCOFF(i, _Glitter_Mask_ST, _Glitter_UV_Channel), tbn, glitter_roughness, glitter_normal,
       data.common.V, data.direct.H, glitter_indirect_dir);
 #endif