Added backgrounds

Former-commit-id: e3959b04a124978c473bd6330047b5fd6ac27b19

examples/FirstScene/main.cpp

@@ -223,10 +223,6 @@ int main()
 		// On active la caméra (Qui s'occupera de préparer la fenêtre au rendu)
 		camera.Activate();
 
-		// On vide le buffer de couleur et de profondeur pour réinitialiser le rendu
-		// À l'avenir, ceci sera fait automatiquement par la scène via les backgrounds
-		NzRenderer::Clear(nzRendererClear_Color | nzRendererClear_Depth);
-
 		// On procède maintenant au rendu de la scène en elle-même, celui-ci se décompose en quatre étapes distinctes
 
 		// Pour commencer, on mets à jour la scène, ceci appelle la méthode Update de tous les SceneNode enregistrés

include/Nazara/2D/Background.hpp

@@ -0,0 +1,24 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - 2D Module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_BACKGROUND_HPP
+#define NAZARA_BACKGROUND_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/2D/Enums.hpp>
+
+class NAZARA_API NzBackground
+{
+	public:
+		NzBackground() = default;
+		~NzBackground();
+
+		virtual void Draw() const = 0;
+
+		virtual nzBackgroundType GetBackgroundType() const = 0;
+};
+
+#endif // NAZARA_BACKGROUND_HPP

include/Nazara/2D/ColorBackground.hpp

@@ -0,0 +1,30 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - 2D Module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_COLORBACKGROUND_HPP
+#define NAZARA_COLORBACKGROUND_HPP
+
+#include <Nazara/Prerequesites.hpp>
+#include <Nazara/2D/Background.hpp>
+#include <Nazara/Core/Color.hpp>
+
+class NAZARA_API NzColorBackground : public NzBackground
+{
+	public:
+		NzColorBackground(const NzColor& color = NzColor::Black);
+
+		void Draw() const;
+
+		nzBackgroundType GetBackgroundType() const;
+		NzColor GetColor() const;
+
+		void SetColor(const NzColor& color);
+
+	private:
+		NzColor m_color;
+};
+
+#endif // NAZARA_COLORBACKGROUND_HPP

include/Nazara/2D/Enums.hpp

@@ -0,0 +1,20 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - 2D module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#pragma once
+
+#ifndef NAZARA_ENUMS_2D_HPP
+#define NAZARA_ENUMS_2D_HPP
+
+enum nzBackgroundType
+{
+	nzBackgroundType_Color,   // NzColorBackground
+	nzBackgroundType_Skybox,  // NzSkyboxBackground
+	nzBackgroundType_Texture, // NzTextureBackground
+	nzBackgroundType_User,
+
+	nzBackgroundType_Max = nzBackgroundType_User
+};
+
+#endif // NAZARA_ENUMS_2D_HPP

include/Nazara/3D/Scene.hpp

@@ -8,6 +8,7 @@
 #define NAZARA_SCENE_HPP
 
 #include <Nazara/Prerequesites.hpp>
+#include <Nazara/2D/Background.hpp>
 #include <Nazara/Core/Color.hpp>
 #include <Nazara/Core/Updatable.hpp>
 #include <Nazara/Math/Frustum.hpp>
@@ -33,6 +34,7 @@ class NAZARA_API NzScene
 		void Cull();
 		void Draw();
 
+		NzBackground* GetBackground() const;
 		NzSceneNode& GetRoot() const;
 		float GetUpdateTime() const;
 		unsigned int GetUpdatePerSecond() const;
@@ -40,6 +42,7 @@ class NAZARA_API NzScene
 		void RegisterForUpdate(NzUpdatable* object);
 
 		void SetAmbientColor(const NzColor& color);
+		void SetBackground(NzBackground* background);
 		void SetUpdatePerSecond(unsigned int updatePerSecond);
 
 		void UnregisterForUpdate(NzUpdatable* object);

src/Nazara/2D/Background.cpp

@@ -0,0 +1,8 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - 2D Module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/2D/Background.hpp>
+#include <Nazara/2D/Debug.hpp>
+
+NzBackground::~NzBackground() = default;

src/Nazara/2D/ColorBackground.cpp

@@ -0,0 +1,33 @@
+// Copyright (C) 2013 Jérôme Leclercq
+// This file is part of the "Nazara Engine - 2D Module"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/2D/ColorBackground.hpp>
+#include <Nazara/Renderer/Renderer.hpp>
+#include <Nazara/2D/Debug.hpp>
+
+NzColorBackground::NzColorBackground(const NzColor& color) :
+m_color(color)
+{
+}
+
+void NzColorBackground::Draw() const
+{
+	NzRenderer::SetClearColor(m_color);
+	NzRenderer::Clear(nzRendererClear_Color);
+}
+
+nzBackgroundType NzColorBackground::GetBackgroundType() const
+{
+	return nzBackgroundType_Color;
+}
+
+NzColor NzColorBackground::GetColor() const
+{
+	return m_color;
+}
+
+void NzColorBackground::SetColor(const NzColor& color)
+{
+	m_color = color;
+}

src/Nazara/3D/Scene.cpp

@@ -3,6 +3,7 @@
 // For conditions of distribution and use, see copyright notice in Config.hpp
 
 #include <Nazara/3D/Scene.hpp>
+#include <Nazara/2D/ColorBackground.hpp>
 #include <Nazara/2D/Drawable.hpp>
 #include <Nazara/3D/Camera.hpp>
 #include <Nazara/3D/Light.hpp>
@@ -19,6 +20,7 @@
 #include <Nazara/Utility/SkeletalMesh.hpp>
 #include <Nazara/Utility/StaticMesh.hpp>
 #include <functional>
+#include <memory>
 #include <set>
 #include <vector>
 #include <Nazara/3D/Debug.hpp>
@@ -45,6 +47,7 @@ struct NzSceneImpl
 	{
 	}
 
+	std::unique_ptr<NzBackground> background;
 	std::vector<NzUpdatable*> updateList;
 	std::vector<NzUpdatable*> visibleUpdateList;
 	std::vector<NzRenderer::InstancingData> instancingData;
@@ -67,6 +70,8 @@ NzScene::NzScene()
 
 	if (NzRenderer::HasCapability(nzRendererCap_Instancing))
 		m_impl->instancingData.resize(NAZARA_RENDERER_INSTANCING_MAX);
+
+	SetBackground(nullptr);
 }
 
 NzScene::~NzScene()
@@ -103,6 +108,9 @@ void NzScene::Draw()
 {
 	NzRenderer::Clear(nzRendererClear_Depth);
 
+	if (m_impl->background)
+		m_impl->background->Draw();
+
 	LightComparator lightComparator;
 
 	// Pour les meshs squelettiques, on utilise un buffer commun
@@ -315,6 +323,11 @@ void NzScene::Draw()
 		drawable->Draw();
 }
 
+NzBackground* NzScene::GetBackground() const
+{
+	return m_impl->background.get();
+}
+
 NzSceneNode& NzScene::GetRoot() const
 {
 	return m_impl->root;
@@ -348,6 +361,14 @@ void NzScene::SetAmbientColor(const NzColor& color)
 	m_impl->ambientColor = color;
 }
 
+void NzScene::SetBackground(NzBackground* background)
+{
+	if (!background)
+		background = new NzColorBackground;
+
+	m_impl->background.reset(background);
+}
+
 void NzScene::SetUpdatePerSecond(unsigned int updatePerSecond)
 {
 	m_impl->updatePerSecond = updatePerSecond;