From 5dd4a067a519af13ac92d531de153fba9b9fc2d6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Vladim=C3=ADr=20Vondru=C5=A1?= <mosra@centrum.cz>
Date: Mon, 7 Feb 2022 19:54:32 +0100
Subject: [PATCH] Shaders: properly bind the instancedNormalMatrix PhongGL
 attribute.

It was only bound via the explicit binding, which isn't in GLES2. Yet
however it just worked, everywhere I tested, somehow.
---
 src/Magnum/Shaders/PhongGL.cpp | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/src/Magnum/Shaders/PhongGL.cpp b/src/Magnum/Shaders/PhongGL.cpp
index 5fca3b52b..39eb3e80d 100644
--- a/src/Magnum/Shaders/PhongGL.cpp
+++ b/src/Magnum/Shaders/PhongGL.cpp
@@ -329,8 +329,11 @@ PhongGL::PhongGL(const Flags flags, const UnsignedInt lightCount
         if(flags >= Flag::InstancedObjectId)
             bindAttributeLocation(ObjectId::Location, "instanceObjectId");
         #endif
-        if(flags & Flag::InstancedTransformation)
+        if(flags & Flag::InstancedTransformation) {
             bindAttributeLocation(TransformationMatrix::Location, "instancedTransformationMatrix");
+            if(lightCount)
+                bindAttributeLocation(NormalMatrix::Location, "instancedNormalMatrix");
+        }
         if(flags >= Flag::InstancedTextureOffset)
             bindAttributeLocation(TextureOffset::Location, "instancedTextureOffset");
     }