Graphics: Fix render layer sorting

include/Nazara/Graphics/InstancedRenderable.inl

@@ -25,8 +25,11 @@ namespace Nz
 
 	inline void InstancedRenderable::UpdateRenderLayer(int renderLayer)
 	{
-		m_renderLayer = renderLayer;
-		OnElementInvalidated(this);
+		if (m_renderLayer != renderLayer)
+		{
+			m_renderLayer = renderLayer;
+			OnElementInvalidated(this);
+		}
 	}
 
 	inline void InstancedRenderable::UpdateAABB(Boxf aabb)

include/Nazara/Graphics/RenderQueueRegistry.hpp

@@ -9,6 +9,7 @@
 
 #include <Nazara/Prerequisites.hpp>
 #include <Nazara/Graphics/Thirdparty/robin_hood/robin_hood.h>
+#include <set>
 
 namespace Nz
 {
@@ -31,6 +32,8 @@ namespace Nz
 			inline std::size_t FetchVertexBuffer(const AbstractBuffer* vertexBuffer) const;
 			inline std::size_t FetchVertexDeclaration(const VertexDeclaration* vertexDeclaration) const;
 
+			inline void Finalize();
+
 			inline void RegisterLayer(int renderLayer);
 			inline void RegisterMaterialPass(const MaterialPass* materialPass);
 			inline void RegisterPipeline(const RenderPipeline* pipeline);
@@ -38,6 +41,7 @@ namespace Nz
 			inline void RegisterVertexDeclaration(const VertexDeclaration* vertexDeclaration);
 
 		private:
+			std::set<int> m_renderLayers;
 			robin_hood::unordered_map<int, std::size_t> m_renderLayerRegistry;
 			robin_hood::unordered_map<const MaterialPass*, std::size_t> m_materialPassRegistry;
 			robin_hood::unordered_map<const RenderPipeline*, std::size_t> m_pipelineRegistry;

include/Nazara/Graphics/RenderQueueRegistry.inl

@@ -10,8 +10,12 @@ namespace Nz
 {
 	inline void RenderQueueRegistry::Clear()
 	{
+		m_materialPassRegistry.clear();
+		m_renderLayers.clear();
 		m_renderLayerRegistry.clear();
 		m_pipelineRegistry.clear();
+		m_vertexBufferRegistry.clear();
+		m_vertexDeclarationRegistry.clear();
 	}
 
 	inline std::size_t RenderQueueRegistry::FetchLayerIndex(int renderLayer) const
@@ -54,9 +58,16 @@ namespace Nz
 		return it->second;
 	}
 
+	inline void RenderQueueRegistry::Finalize()
+	{
+		for (int renderLayer : m_renderLayers)
+			m_renderLayerRegistry.emplace(renderLayer, m_renderLayerRegistry.size());
+	}
+
 	inline void RenderQueueRegistry::RegisterLayer(int renderLayer)
 	{
-		m_renderLayerRegistry.try_emplace(renderLayer, m_renderLayerRegistry.size());
+		assert(m_renderLayerRegistry.empty());
+		m_renderLayers.insert(renderLayer);
 	}
 
 	inline void RenderQueueRegistry::RegisterMaterialPass(const MaterialPass* materialPass)

src/Nazara/Graphics/ForwardFramePipeline.cpp

@@ -260,6 +260,8 @@ namespace Nz
 					renderElement->Register(viewerData.depthPrepassRegistry);
 					viewerData.depthPrepassRenderQueue.Insert(renderElement.get());
 				}
+
+				viewerData.depthPrepassRegistry.Finalize();
 			}
 
 			viewerData.depthPrepassRenderQueue.Sort([&](const RenderElement* element)
@@ -282,6 +284,8 @@ namespace Nz
 					renderElement->Register(viewerData.forwardRegistry);
 					viewerData.forwardRenderQueue.Insert(renderElement.get());
 				}
+
+				viewerData.forwardRegistry.Finalize();
 			}
 
 			viewerData.forwardRenderQueue.Sort([&](const RenderElement* element)