X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=blobdiff_plain;f=source%2Feffect.h;h=e99bc2576d9eb97220faed58f214b790779ab085;hp=dfb369614c28c2388b1dcdd249e20e4d331224ec;hb=3b159edbe4e80a2bc19c4c2fcd42cb996b9fbfe0;hpb=7cbe8cc9893fe14f889321bd55e78b0ed6503e23

diff --git a/source/effect.h b/source/effect.h
index dfb36961..e99bc257 100644
--- a/source/effect.h
+++ b/source/effect.h
@@ -9,7 +9,8 @@ namespace GL {
 
 /**
 Effects are used to wrap other renderables and give them additional visual
-properties.
+properties.  An Effect's render method should set up the necessary state, call
+the wrapped Renderable's render method, and clean up after itself.
 */
 class Effect: public Renderable
 {
@@ -23,6 +24,11 @@ public:
 
 	void enable_for_pass(const Tag &);
 	void disable_for_pass(const Tag &);
+
+	virtual const Matrix *get_matrix() const { return renderable.get_matrix(); }
+
+	virtual void setup_frame() const { renderable.setup_frame(); }
+	virtual void finish_frame() const { renderable.finish_frame(); }
 };
 
 } // namespace GL