From: Mikko Rasa <tdb@tdb.fi>
Date: Wed, 15 Aug 2012 19:31:03 +0000 (+0300)
Subject: Add a function to query if a Technique has any shaders
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=7b671e6899949d095698425a9b33387e7eb13894

Add a function to query if a Technique has any shaders

Also make PassMap public since it's exposed through get_passes
---

diff --git a/source/technique.cpp b/source/technique.cpp
index fcb2ffe5..aa27d99c 100644
--- a/source/technique.cpp
+++ b/source/technique.cpp
@@ -28,6 +28,14 @@ const RenderPass &Technique::get_pass(const GL::Tag &tag) const
 	return get_item(passes, tag);
 }
 
+bool Technique::has_shaders() const
+{
+	for(PassMap::const_iterator i=passes.begin(); i!=passes.end(); ++i)
+		if(i->second.get_shader_program())
+			return true;
+	return false;
+}
+
 
 Technique::Loader::Loader(Technique &t):
 	DataFile::CollectionObjectLoader<Technique>(t, 0)
diff --git a/source/technique.h b/source/technique.h
index f908fe86..ad988c27 100644
--- a/source/technique.h
+++ b/source/technique.h
@@ -37,8 +37,10 @@ private:
 		void texture(const std::string &, const std::string &);
 	};
 
+public:
 	typedef std::map<Tag, RenderPass> PassMap;
 
+private:
 	PassMap passes;
 
 public:
@@ -46,6 +48,7 @@ public:
 	bool has_pass(const GL::Tag &) const;
 	const RenderPass &get_pass(const GL::Tag &) const;
 	const PassMap &get_passes() const { return passes; }
+	bool has_shaders() const;
 };
 
 } // namespace GL