From b3455e88ca18e8f16ac163b50c1c41b71a15e513 Mon Sep 17 00:00:00 2001
From: Lynix <lynix680@gmail.com>
Date: Sun, 17 Apr 2016 19:58:15 +0200
Subject: [PATCH] Graphics/DepthRenderTechnique: Add Clear method

Former-commit-id: 70e7cb5b59f0407c73766687b6a95e09b7eca589
---
 SDK/src/NDK/Systems/RenderSystem.cpp             | 4 ++++
 include/Nazara/Graphics/DepthRenderTechnique.hpp | 1 +
 src/Nazara/Graphics/DepthRenderTechnique.cpp     | 5 ++++-
 3 files changed, 9 insertions(+), 1 deletion(-)

diff --git a/SDK/src/NDK/Systems/RenderSystem.cpp b/SDK/src/NDK/Systems/RenderSystem.cpp
index 829d2b398..7b90761b6 100644
--- a/SDK/src/NDK/Systems/RenderSystem.cpp
+++ b/SDK/src/NDK/Systems/RenderSystem.cpp
@@ -4,6 +4,7 @@
 
 #include <NDK/Systems/RenderSystem.hpp>
 #include <Nazara/Graphics/ColorBackground.hpp>
+#include <Nazara/Math/Rect.hpp>
 #include <Nazara/Renderer/Renderer.hpp>
 #include <NDK/Components/CameraComponent.hpp>
 #include <NDK/Components/GraphicsComponent.hpp>
@@ -169,6 +170,7 @@ namespace Ndk
 			Nz::Renderer::SetMatrix(Nz::MatrixType_Projection, Nz::Matrix4f::Ortho(0.f, 100.f, 100.f, 0.f, 1.f, 100.f));
 			Nz::Renderer::SetMatrix(Nz::MatrixType_View, Nz::Matrix4f::ViewMatrix(lightNode.GetRotation() * Nz::Vector3f::Forward() * 100.f, lightNode.GetRotation()));
 
+			m_shadowTechnique.Clear(dummySceneData);
 			m_shadowTechnique.Draw(dummySceneData);
 		}
 	}
@@ -233,6 +235,7 @@ namespace Ndk
 							graphicsComponent.AddToRenderQueue(renderQueue);
 						}
 
+						m_shadowTechnique.Clear(dummySceneData);
 						m_shadowTechnique.Draw(dummySceneData);
 					}
 					break;
@@ -260,6 +263,7 @@ namespace Ndk
 						graphicsComponent.AddToRenderQueue(renderQueue);
 					}
 
+					m_shadowTechnique.Clear(dummySceneData);
 					m_shadowTechnique.Draw(dummySceneData);
 					break;
 				}
diff --git a/include/Nazara/Graphics/DepthRenderTechnique.hpp b/include/Nazara/Graphics/DepthRenderTechnique.hpp
index 0b265ccc3..ac75f7e52 100644
--- a/include/Nazara/Graphics/DepthRenderTechnique.hpp
+++ b/include/Nazara/Graphics/DepthRenderTechnique.hpp
@@ -24,6 +24,7 @@ namespace Nz
 			DepthRenderTechnique();
 			~DepthRenderTechnique() = default;
 
+			void Clear(const SceneData& sceneData) const override;
 			bool Draw(const SceneData& sceneData) const override;
 
 			AbstractRenderQueue* GetRenderQueue() override;
diff --git a/src/Nazara/Graphics/DepthRenderTechnique.cpp b/src/Nazara/Graphics/DepthRenderTechnique.cpp
index 107043bce..1b2dc03f1 100644
--- a/src/Nazara/Graphics/DepthRenderTechnique.cpp
+++ b/src/Nazara/Graphics/DepthRenderTechnique.cpp
@@ -48,7 +48,7 @@ namespace Nz
 		m_spriteBuffer.Reset(VertexDeclaration::Get(VertexLayout_XYZ_Color_UV), &m_vertexBuffer);
 	}
 
-	bool DepthRenderTechnique::Draw(const SceneData& sceneData) const
+	void DepthRenderTechnique::Clear(const SceneData& sceneData) const
 	{
 		Renderer::Enable(RendererParameter_DepthBuffer, true);
 		Renderer::Enable(RendererParameter_DepthWrite, true);
@@ -57,7 +57,10 @@ namespace Nz
 		// Just in case the background does render depth
 		if (sceneData.background)
 			sceneData.background->Draw(sceneData.viewer);
+	}
 
+	bool DepthRenderTechnique::Draw(const SceneData& sceneData) const
+	{
 		for (auto& pair : m_renderQueue.layers)
 		{
 			ForwardRenderQueue::Layer& layer = pair.second;