diff --git a/apps/openmw/mwgui/inventorywindow.cpp b/apps/openmw/mwgui/inventorywindow.cpp
index 22075a62d..e91cf5a12 100644
--- a/apps/openmw/mwgui/inventorywindow.cpp
+++ b/apps/openmw/mwgui/inventorywindow.cpp
@@ -143,6 +143,12 @@ namespace MWGui
 
         mItemView->setModel(mSortModel);
 
+        mFilterAll->setStateSelected(true);
+        mFilterWeapon->setStateSelected(false);
+        mFilterApparel->setStateSelected(false);
+        mFilterMagic->setStateSelected(false);
+        mFilterMisc->setStateSelected(false);
+
         mPreview->updatePtr(mPtr);
         mPreview->rebuild();
         mPreview->update();
diff --git a/files/shaders/objects_fragment.glsl b/files/shaders/objects_fragment.glsl
index 5a72b44b3..ed1322609 100644
--- a/files/shaders/objects_fragment.glsl
+++ b/files/shaders/objects_fragment.glsl
@@ -47,9 +47,9 @@ varying float depth;
 #define PER_PIXEL_LIGHTING (@normalMap || @forcePPL)
 
 #if !PER_PIXEL_LIGHTING
-varying vec4 lighting;
+centroid varying vec4 lighting;
 #else
-varying vec4 passColor;
+centroid varying vec4 passColor;
 #endif
 varying vec3 passViewPos;
 varying vec3 passNormal;
diff --git a/files/shaders/objects_vertex.glsl b/files/shaders/objects_vertex.glsl
index e140cd6ad..4ed02b9c3 100644
--- a/files/shaders/objects_vertex.glsl
+++ b/files/shaders/objects_vertex.glsl
@@ -38,9 +38,9 @@ varying float depth;
 #define PER_PIXEL_LIGHTING (@normalMap || @forcePPL)
 
 #if !PER_PIXEL_LIGHTING
-varying vec4 lighting;
+centroid varying vec4 lighting;
 #else
-varying vec4 passColor;
+centroid varying vec4 passColor;
 #endif
 varying vec3 passViewPos;
 varying vec3 passNormal;
diff --git a/files/shaders/terrain_fragment.glsl b/files/shaders/terrain_fragment.glsl
index 134e838c0..ef6d7f226 100644
--- a/files/shaders/terrain_fragment.glsl
+++ b/files/shaders/terrain_fragment.glsl
@@ -17,9 +17,9 @@ varying float depth;
 #define PER_PIXEL_LIGHTING (@normalMap || @forcePPL)
 
 #if !PER_PIXEL_LIGHTING
-varying vec4 lighting;
+centroid varying vec4 lighting;
 #else
-varying vec4 passColor;
+centroid varying vec4 passColor;
 #endif
 varying vec3 passViewPos;
 varying vec3 passNormal;
diff --git a/files/shaders/terrain_vertex.glsl b/files/shaders/terrain_vertex.glsl
index e2a180153..9e7c4a162 100644
--- a/files/shaders/terrain_vertex.glsl
+++ b/files/shaders/terrain_vertex.glsl
@@ -6,9 +6,9 @@ varying float depth;
 #define PER_PIXEL_LIGHTING (@normalMap || @forcePPL)
 
 #if !PER_PIXEL_LIGHTING
-varying vec4 lighting;
+centroid varying vec4 lighting;
 #else
-varying vec4 passColor;
+centroid varying vec4 passColor;
 #endif
 varying vec3 passViewPos;
 varying vec3 passNormal;