From: Mikko Rasa <tdb@tdb.fi>
Date: Sat, 2 May 2020 14:55:37 +0000 (+0300)
Subject: Add a find_pass function to Technique
X-Git-Url: http://git.tdb.fi/?p=libs%2Fgl.git;a=commitdiff_plain;h=cf17331b8ddc0e00c3ba452e0f4dfa183dc8e019

Add a find_pass function to Technique
---

diff --git a/source/instancearray.cpp b/source/instancearray.cpp
index 5c6ab423..91f92084 100644
--- a/source/instancearray.cpp
+++ b/source/instancearray.cpp
@@ -113,16 +113,16 @@ void InstanceArray::render(Renderer &renderer, const Tag &tag) const
 		const Technique *tech = object.get_technique();
 		if(!tech)
 			throw logic_error("no technique");
-		if(!tech->has_pass(tag))
+		const RenderPass *pass = tech->find_pass(tag);
+		if(!pass)
 			return;
-		const RenderPass &pass = tech->get_pass(tag);
 
 		const Mesh *mesh = object.get_mesh();
 		mesh->get_vertices().refresh();
 		instance_data->refresh();
 
 		Renderer::Push push(renderer);
-		pass.apply(renderer);
+		pass->apply(renderer);
 		mesh->draw_instanced(renderer, *vtx_setup, instances.size());
 	}
 	else
diff --git a/source/object.cpp b/source/object.cpp
index 25daf13e..d4562b86 100644
--- a/source/object.cpp
+++ b/source/object.cpp
@@ -170,9 +170,7 @@ const RenderPass *Object::get_pass(const Tag &tag, unsigned lod) const
 	const Technique *tech = lods[lod].technique.get();
 	if(!tech)
 		throw logic_error("no technique");
-	if(!tech->has_pass(tag))
-		return 0;
-	return &tech->get_pass(tag);
+	return tech->find_pass(tag);
 }
 
 void Object::resource_loaded(Resource &res)
diff --git a/source/technique.cpp b/source/technique.cpp
index d6ec7115..e3233eff 100644
--- a/source/technique.cpp
+++ b/source/technique.cpp
@@ -28,6 +28,12 @@ const RenderPass &Technique::get_pass(const Tag &tag) const
 	return get_item(passes, tag);
 }
 
+const RenderPass *Technique::find_pass(const Tag &tag) const
+{
+	PassMap::const_iterator i = passes.find(tag);
+	return (i!=passes.end() ? &i->second : 0);
+}
+
 bool Technique::replace_texture(const string &slot, const Texture &tex)
 {
 	bool replaced = false;
diff --git a/source/technique.h b/source/technique.h
index f80e2f61..762b98f4 100644
--- a/source/technique.h
+++ b/source/technique.h
@@ -50,6 +50,7 @@ public:
 	RenderPass &add_pass(const Tag &);
 	bool has_pass(const Tag &) const;
 	const RenderPass &get_pass(const Tag &) const;
+	const RenderPass *find_pass(const Tag &) const;
 	const PassMap &get_passes() const { return passes; }
 	bool replace_texture(const std::string &, const Texture &);
 	bool replace_material(const std::string &, const Material &);