From: Mikko Rasa <tdb@tdb.fi>
Date: Mon, 17 Jan 2011 17:43:10 +0000 (+0000)
Subject: Reintroduce named texture slots for Technique inheritance
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=09b835f0ff0ee594fbb555224a85b28398e14116

Reintroduce named texture slots for Technique inheritance
---

diff --git a/source/renderpass.cpp b/source/renderpass.cpp
index d15a7098..b95bd4bc 100644
--- a/source/renderpass.cpp
+++ b/source/renderpass.cpp
@@ -33,7 +33,8 @@ RenderPass::RenderPass(const RenderPass &other):
 	shprog(other.shprog),
 	shdata(other.shdata ? new ProgramData(*other.shdata) : 0),
 	material(other.material),
-	texturing(other.texturing ? new Texturing(*other.texturing) : 0)
+	texturing(other.texturing ? new Texturing(*other.texturing) : 0),
+	tex_names(other.tex_names)
 { }
 
 RenderPass::~RenderPass()
@@ -56,6 +57,14 @@ void RenderPass::set_texture(unsigned index, const Texture *tex)
 	texturing->attach(index, *tex);
 }
 
+int RenderPass::get_texture_index(const string &n) const
+{
+	map<string, unsigned>::const_iterator i = tex_names.find(n);
+	if(i==tex_names.end())
+		return -1;
+	return i->second;
+}
+
 
 RenderPass::Loader::Loader(RenderPass &p):
 	DataFile::CollectionObjectLoader<RenderPass>(p, 0)
@@ -77,6 +86,7 @@ void RenderPass::Loader::init()
 	add("material", &Loader::material_inline);
 	add("material", &Loader::material);
 	add("texunit",  &Loader::texunit);
+	add("texunit",  &Loader::texunit_named);
 	add("uniforms", &Loader::uniforms);
 }
 
@@ -101,6 +111,12 @@ void RenderPass::Loader::texunit(unsigned i)
 	load_sub_with(ldr);
 }
 
+void RenderPass::Loader::texunit_named(unsigned i, const string &n)
+{
+	texunit(i);
+	obj.tex_names[n] = i;
+}
+
 void RenderPass::Loader::uniforms()
 {
 	if(!obj.shprog)
diff --git a/source/renderpass.h b/source/renderpass.h
index 5c1b8452..c201eb07 100644
--- a/source/renderpass.h
+++ b/source/renderpass.h
@@ -42,6 +42,7 @@ public:
 		void material_inline();
 		void material(const std::string &);
 		void texunit(unsigned);
+		void texunit_named(unsigned, const std::string &);
 		void uniforms();
 	};
 
@@ -67,6 +68,7 @@ private:
 	ProgramData *shdata;
 	RefPtr<const Material> material;
 	Texturing *texturing;
+	std::map<std::string, unsigned> tex_names;
 
 	RenderPass &operator=(const RenderPass &);
 public:
@@ -80,6 +82,7 @@ public:
 	const Material *get_material() const { return material.get(); }
 	void set_texture(unsigned, const Texture *);
 	const Texturing *get_texturing() const { return texturing; }
+	int get_texture_index(const std::string &) const;
 };
 
 } // namespace GL
diff --git a/source/technique.cpp b/source/technique.cpp
index 9d13a897..49b48798 100644
--- a/source/technique.cpp
+++ b/source/technique.cpp
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2008-2011  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
@@ -88,17 +88,15 @@ Technique::InheritLoader::InheritLoader(Technique &t, Collection &c):
 	add("texture", &InheritLoader::texture);
 }
 
-void Technique::InheritLoader::texture(unsigned index, const string &name)
+void Technique::InheritLoader::texture(const std::string &slot, const string &name)
 {
 	Texture *tex = get_collection().get<Texture>(name);
 	for(PassMap::iterator i=obj.passes.begin(); i!=obj.passes.end(); ++i)
 	{
-		try
-		{
-			i->second.set_texture(index, tex);
-		}
-		catch(const KeyError &)
-		{ }
+		int index = i->second.get_texture_index(slot);
+		if(index<0)
+			continue;
+		i->second.set_texture(index, tex);
 	}
 }
 
diff --git a/source/technique.h b/source/technique.h
index 608af19d..b06ddcbb 100644
--- a/source/technique.h
+++ b/source/technique.h
@@ -1,7 +1,7 @@
 /* $Id$
 
 This file is part of libmspgl
-Copyright © 2007  Mikko Rasa, Mikkosoft Productions
+Copyright © 2008-2011  Mikko Rasa, Mikkosoft Productions
 Distributed under the LGPL
 */
 
@@ -41,7 +41,7 @@ private:
 		InheritLoader(Technique &, Collection &);
 	
 	private:
-		void texture(unsigned, const std::string &);
+		void texture(const std::string &, const std::string &);
 	};
 
 	typedef std::map<Tag, RenderPass> PassMap;