X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Frenderable.h;h=78879a3d8030fb15fcd41136c16ec7c831541972;hb=18878df418035445ba5146fcde3d647d7aa8c054;hp=c055cefa65b989047ff0b324ab53259204ac77c1;hpb=3cdcc7f689b3868dd275774b9bd9adb5c436f244;p=libs%2Fgl.git

diff --git a/source/renderable.h b/source/renderable.h
index c055cefa..78879a3d 100644
--- a/source/renderable.h
+++ b/source/renderable.h
@@ -9,6 +9,10 @@ namespace GL {
 
 class Renderer;
 
+/**
+Base class for renderable objects.  All Renderables must support rendering with
+a Renderer, and may optionally provide support for standalone rendering.
+*/
 class Renderable
 {
 protected:
@@ -20,7 +24,7 @@ public:
 	virtual long get_instance_key() const { return 0; }
 
 	virtual void render(const Tag & = Tag()) const;
-	virtual void render(Renderer &, const Tag & = Tag()) const;
+	virtual void render(Renderer &, const Tag & = Tag()) const = 0;
 };
 
 } // namespace Msp