diff --git a/leenkx/blender/lnx/material/make_refract.py b/leenkx/blender/lnx/material/make_refract.py
index a4c07ea..b30f6b2 100644
--- a/leenkx/blender/lnx/material/make_refract.py
+++ b/leenkx/blender/lnx/material/make_refract.py
@@ -58,6 +58,7 @@ def make(context_id):
         frag.write('fragColor[1] = vec4(n.xy, roughness, metallic);')
 
     frag.write('fragColor[2] = vec4(ior, opacity, 0.0, 1.0);')
+    # frag.write('fragColor[2] = vec4(ior, opacity, packFloat2(basecol.r, basecol.g), basecol.b);')
 
     make_finalize.make(con_refract)