Add initial support for shader binding sets (WIP)

include/Nazara/VulkanRenderer/VulkanDescriptorSetLayoutCache.inl

@@ -0,0 +1,84 @@
+// Copyright (C) 2020 Jérôme Leclercq
+// This file is part of the "Nazara Engine - Vulkan Renderer"
+// For conditions of distribution and use, see copyright notice in Config.hpp
+
+#include <Nazara/VulkanRenderer/VulkanDescriptorSetLayoutCache.hpp>
+#include <Nazara/VulkanRenderer/Utils.hpp>
+#include <stdexcept>
+#include <Nazara/VulkanRenderer/Debug.hpp>
+
+namespace Nz
+{
+	inline std::size_t VulkanDescriptorSetLayoutBindingHasher::operator()(const VulkanDescriptorSetLayoutInfo& layoutInfo) const
+	{
+		std::size_t hash = 0;
+		HashCombine(hash, layoutInfo.createFlags);
+		for (const auto& binding : layoutInfo.bindings)
+		{
+			HashCombine(hash, binding.binding);
+			HashCombine(hash, binding.descriptorCount);
+			HashCombine(hash, binding.descriptorType);
+			HashCombine(hash, binding.pImmutableSamplers);
+			HashCombine(hash, binding.stageFlags);
+		}
+
+		return hash;
+	}
+
+	inline bool VulkanDescriptorSetLayoutBindingEqual::operator()(const VulkanDescriptorSetLayoutInfo& lhs, const VulkanDescriptorSetLayoutInfo& rhs) const
+	{
+		if (lhs.createFlags != rhs.createFlags)
+			return false;
+
+		if (lhs.bindings.size() != rhs.bindings.size())
+			return false;
+
+		for (std::size_t i = 0; i < lhs.bindings.size(); ++i)
+		{
+			const auto& lhsBinding = lhs.bindings[i];
+			const auto& bindingRhs = rhs.bindings[i];
+
+			if (lhsBinding.binding != bindingRhs.binding)
+				return false;
+
+			if (lhsBinding.descriptorCount != bindingRhs.descriptorCount)
+				return false;
+
+			if (lhsBinding.descriptorType != bindingRhs.descriptorType)
+				return false;
+
+			if (lhsBinding.pImmutableSamplers != bindingRhs.pImmutableSamplers)
+				return false;
+
+			if (lhsBinding.stageFlags != bindingRhs.stageFlags)
+				return false;
+		}
+
+		return true;
+	}
+
+	inline VulkanDescriptorSetLayoutCache::VulkanDescriptorSetLayoutCache(Vk::Device& device) :
+	m_device(device)
+	{
+	}
+
+	inline void VulkanDescriptorSetLayoutCache::Clear()
+	{
+		m_cache.clear();
+	}
+
+	inline const Vk::DescriptorSetLayout& VulkanDescriptorSetLayoutCache::Get(const VulkanDescriptorSetLayoutInfo& layoutInfo) const
+	{
+		auto it = m_cache.find(layoutInfo);
+		if (it != m_cache.end())
+			return it->second;
+
+		Vk::DescriptorSetLayout setLayout;
+		if (!setLayout.Create(m_device, UInt32(layoutInfo.bindings.size()), layoutInfo.bindings.data(), layoutInfo.createFlags))
+			throw std::runtime_error("failed to create descriptor set layout: " + TranslateVulkanError(setLayout.GetLastErrorCode()));
+
+		return m_cache.emplace(layoutInfo, std::move(setLayout)).first->second;
+	}
+}
+
+#include <Nazara/VulkanRenderer/DebugOff.hpp>