choose glut primitve lighting based on draw mode

libs_required/ACG/Scenegraph/GlutPrimitiveNode.cc

@@ -444,30 +444,49 @@ getRenderObjects(IRenderer* _renderer, GLState&  _state , const DrawModes::DrawM
     }
 
     ro.setMaterial(&localMaterial);
-    ro.shaderDesc.shadeMode = SG_SHADE_PHONG;
+    size_t n_layers = _drawMode.getNumLayers();
+    for (size_t i = 0; i < n_layers; ++i)
+    {
+      const auto layer = _drawMode.getLayer(i);
 
-    switch (primitives_[i].type) {
-      case SPHERE:
+      switch (layer->lightStage())
+      {
+        case DrawModes::LIGHTSTAGE_SMOOTH:
+          ro.shaderDesc.shadeMode = SG_SHADE_GOURAUD;
+          break;
+        case DrawModes::LIGHTSTAGE_PHONG:
+          ro.shaderDesc.shadeMode = SG_SHADE_PHONG;
+          break;
+        case DrawModes::LIGHTSTAGE_UNLIT:
+          ro.shaderDesc.shadeMode = SG_SHADE_UNLIT;
+          break;
+      }
 
-        // Sphere
-        ro.debugName = std::string("glutprimitive.sphere no ") + std::to_string(i) + ": " + name();
+      switch (primitives_[i].type)
+      {
+        case SPHERE:
 
-        sphere_->addToRenderer(_renderer, &ro, primitives_[i].size);
-        break;
+          // Sphere
+          ro.debugName = std::string("glutprimitive.sphere no ") + std::to_string(i) + ": " + name();
 
-      case CONE:
-        //Cone
-        ro.debugName = std::string("glutprimitive.cone no ") + std::to_string(i) + ": " + name();
-        cone_->addToRenderer(_renderer, &ro, primitives_[i].innersize);
-        break;
+          sphere_->addToRenderer(_renderer, &ro, primitives_[i].size);
+          break;
 
-      default:
-        // TODO: The other glut primitives are not yet supported by the advanced renderers
-        std::cerr << "Sorry, but the glut renderer objects are not available for this renderer yet!" << std::endl;
-        break;
+        case CONE:
+          //Cone
+          ro.debugName = std::string("glutprimitive.cone no ") + std::to_string(i) + ": " + name();
+          cone_->addToRenderer(_renderer, &ro, primitives_[i].innersize);
+          break;
+
+        default:
+          // TODO: The other glut primitives are not yet supported by the advanced renderers
+          std::cerr << "Sorry, but the glut renderer objects are not available for this renderer yet!" << std::endl;
+          break;
+      }
     }
 
 
+
   }
 
 }