Allocate command buffers from pools

include/Nazara/VulkanRenderer/VulkanCommandPool.inl

@@ -23,6 +23,38 @@ namespace Nz
 		if (!m_commandPool.Create(device, queueFamilyIndex))
 			throw std::runtime_error("Failed to create command pool: " + TranslateVulkanError(m_commandPool.GetLastErrorCode()));
 	}
+
+	template<typename... Args>
+	CommandBufferPtr VulkanCommandPool::AllocateFromPool(std::size_t poolIndex, Args&&... args)
+	{
+		auto& pool = m_commandPools[poolIndex];
+
+		std::size_t freeBindingId = pool.freeCommands.FindFirst();
+		if (freeBindingId == pool.freeCommands.npos)
+			return {}; //< No free binding in this pool
+
+		pool.freeCommands.Reset(freeBindingId);
+
+		VulkanCommandBuffer* freeBindingMemory = reinterpret_cast<VulkanCommandBuffer*>(&pool.storage[freeBindingId]);
+		return CommandBufferPtr(PlacementNew(freeBindingMemory, *this, poolIndex, freeBindingId, std::forward<Args>(args)...));
+	}
+
+	inline void VulkanCommandPool::TryToShrink()
+	{
+		std::size_t poolCount = m_commandPools.size();
+		if (poolCount >= 2 && m_commandPools.back().freeCommands.TestAll())
+		{
+			for (std::size_t i = poolCount - 1; i > 0; --i)
+			{
+				if (!m_commandPools[i].freeCommands.TestAll())
+					break;
+
+				poolCount--;
+			}
+
+			m_commandPools.resize(poolCount);
+		}
+	}
 }
 
 #include <Nazara/VulkanRenderer/DebugOff.hpp>