X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frenderable.h;h=9fe46956540d4af243e61b2a9316c7eb08ccf020;hb=5028e8accde81677fc4a50c771b955cf324851b2;hp=6e433d3e9eb5b489a99a99464f9b9d0983b4e253;hpb=e759062876ee7fc81d1c2f40818d5bf97898d53d;p=libs%2Fgl.git

diff --git a/source/renderable.h b/source/renderable.h
index 6e433d3e..9fe46956 100644
--- a/source/renderable.h
+++ b/source/renderable.h
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2007, 2011  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
@@ -14,6 +14,8 @@ Distributed under the LGPL
 namespace Msp {
 namespace GL {
 
+class Renderer;
+
 class Renderable
 {
 protected:
@@ -21,7 +23,11 @@ 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