X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Frenderable.h;h=c055cefa65b989047ff0b324ab53259204ac77c1;hp=44b3c257b9a79b825e466be5d9d467827c350b38;hb=f14435e58bfa0fa697a06ba9a454bb30cd37d9d8;hpb=b617c5d7b5283ad260a77f01e42e6170cabbc03d

diff --git a/source/renderable.h b/source/renderable.h
index 44b3c257..c055cefa 100644
--- a/source/renderable.h
+++ b/source/renderable.h
@@ -1,10 +1,3 @@
-/* $Id$
-
-This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
-Distributed under the LGPL
-*/
-
 #ifndef MSP_GL_RENDERABLE_H_
 #define MSP_GL_RENDERABLE_H_
 
@@ -14,6 +7,8 @@ Distributed under the LGPL
 namespace Msp {
 namespace GL {
 
+class Renderer;
+
 class Renderable
 {
 protected:
@@ -21,7 +16,11 @@ protected:
 public:
 	virtual ~Renderable() { }
 
-	virtual void render(const Tag &tag = Tag()) const =0;
+	/** Returns a key used for grouping Renderables in an InstanceScene. */
+	virtual long get_instance_key() const { return 0; }
+
+	virtual void render(const Tag & = Tag()) const;
+	virtual void render(Renderer &, const Tag & = Tag()) const;
 };
 
 } // namespace Msp