Do not draw pads on hidden copper layers.

pcbnew/class_pad.cpp

@@ -1276,6 +1276,7 @@ void D_PAD::ViewGetLayers( int aLayers[], int& aCount ) const
 unsigned int D_PAD::ViewGetLOD( int aLayer, KIGFX::VIEW* aView ) const
 {
     const int HIDE = std::numeric_limits<unsigned int>::max();
+    BOARD* board = GetBoard();
 
     // Handle Render tab switches
     if( ( GetAttribute() == PAD_ATTRIB_STANDARD || GetAttribute() == PAD_ATTRIB_HOLE_NOT_PLATED )
@@ -1294,6 +1295,10 @@ unsigned int D_PAD::ViewGetLOD( int aLayer, KIGFX::VIEW* aView ) const
     if( IsBackLayer( ( PCB_LAYER_ID )aLayer ) && !aView->IsLayerVisible( LAYER_PAD_BK ) )
         return HIDE;
 
+    // Only draw the pad if at least one of the layers it crosses is being displayed
+    if( board && !( board->GetVisibleLayers() & GetLayerSet() ).any() )
+        return HIDE;
+
     // Netnames will be shown only if zoom is appropriate
     if( IsNetnameLayer( aLayer ) )
     {

pcbnew/pcb_draw_panel_gal.cpp

@@ -446,10 +446,12 @@ void PCB_DRAW_PANEL_GAL::setDefaultLayerDeps()
     m_view->SetRequired( LAYER_PADS_NETNAMES, LAYER_PADS_TH );
 
     // Front modules
+    m_view->SetRequired( LAYER_PAD_FR, F_Cu );
     m_view->SetRequired( LAYER_MOD_TEXT_FR, LAYER_MOD_FR );
     m_view->SetRequired( LAYER_PAD_FR_NETNAMES, LAYER_PAD_FR );
 
     // Back modules
+    m_view->SetRequired( LAYER_PAD_BK, B_Cu );
     m_view->SetRequired( LAYER_MOD_TEXT_BK, LAYER_MOD_BK );
     m_view->SetRequired( LAYER_PAD_BK_NETNAMES, LAYER_PAD_BK );