X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Feffect.h;h=7c943ae6ef297f2a80cef9fc8d640fedd19b721e;hb=ab59f5a9e66b3fc7872ad96ec7949940189f0819;hp=dfb369614c28c2388b1dcdd249e20e4d331224ec;hpb=7cbe8cc9893fe14f889321bd55e78b0ed6503e23;p=libs%2Fgl.git

diff --git a/source/effect.h b/source/effect.h
index dfb36961..7c943ae6 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 +24,8 @@ public:
 
 	void enable_for_pass(const Tag &);
 	void disable_for_pass(const Tag &);
+
+	virtual const Matrix *get_matrix() const { return renderable.get_matrix(); }
 };
 
 } // namespace GL