Fixed top-down render preview in render form

src/definition/Scenery.cpp

@@ -38,6 +38,20 @@ void Scenery::load(PackStream* stream)
     validate();
 }
 
+void Scenery::copy(BaseDefinition *destination_) const
+{
+    Scenery* destination = (Scenery*)destination_;
+
+    atmosphere->copy(destination->atmosphere);
+    camera->copy(destination->camera);
+    clouds->copy(destination->clouds);
+    terrain->copy(destination->terrain);
+    textures->copy(destination->textures);
+    water->copy(destination->water);
+
+    destination->validate();
+}
+
 void Scenery::validate()
 {
     BaseDefinition::validate();

src/definition/Scenery.h

@@ -22,6 +22,8 @@ public:
     virtual void load(PackStream* stream) override;
 
     virtual void validate() override;
+    virtual void copy(BaseDefinition *destination) const override;
+
     virtual Scenery* getScenery() override;
 
     void autoPreset(int seed);

src/interface/desktop/formrender.cpp

@@ -70,8 +70,6 @@ protected:
             CloudsRendererClass.bind(_renderer, _no_clouds);
         }
 
-        _renderer->prepare();
-
         _renderer->atmosphere->applyAerialPerspective = _applyAerialPerspective;
     }
 
@@ -85,7 +83,7 @@ protected:
     }
 
 private:
-    Renderer* _renderer;
+    SoftwareRenderer* _renderer;
     bool _clouds_enabled;
     CloudsDefinition* _no_clouds;