Add an object LoD bias parameter to Renderer

[libs/gl.git] / source / objectinstance.h

diff --git a/source/objectinstance.h b/source/objectinstance.h
index 273d348579b4b8a34e71d2ebcb33a73f9394c60b..1ad221c78e9f3796c22e2d04ae52817fec477b8b 100644 (file)
--- a/source/objectinstance.h
+++ b/source/objectinstance.h
@@ -8,8 +8,6 @@
 namespace Msp {
 namespace GL {
 
-class ProgramData;
-
 /**
 Represents a single instance of an Object.  Thanks to being derived from
 Placeable in can be positioned without additional effort.  Other instance
@@ -20,6 +18,16 @@ render all instances of the same object consecutively.
 */
 class ObjectInstance: public PlacedRenderable
 {
+public:
+       class Loader: public DataFile::ObjectLoader<ObjectInstance>
+       {
+       public:
+               Loader(ObjectInstance &);
+
+       private:
+               void transform();
+       };
+
 protected:
        const Object &object;
 
@@ -27,7 +35,7 @@ public:
        ObjectInstance(const Object &);
 
        const Object &get_object() const { return object; }
-       virtual long get_instance_key() const { return reinterpret_cast<long>(&object); }
+       virtual IntPtr get_instance_key() const { return reinterpret_cast<IntPtr>(&object); }
 
        virtual const Geometry::BoundingSphere<float, 3> *get_bounding_sphere() const { return object.get_bounding_sphere(); }
 
@@ -36,14 +44,14 @@ public:
 
        /** Hook function, called from Object just before rendering the mesh.
        Renderer state will have been pushed before this is called. */
-       virtual void setup_render(Renderer &, const Tag &) const { }
+       virtual void setup_render(Renderer &, const Tag &) const;
 
        /** Hook function, called from Object right after rendering the mesh.  Since
        Object takes care of pushing Renderer state, this rarely needs to do
        anything. */
        virtual void finish_render(Renderer &, const Tag &) const { }
 
-       virtual unsigned get_level_of_detail(const Renderer &) const { return 0; }
+       virtual unsigned get_level_of_detail(const Renderer &) const;
 };
 
 } // namespace GL