Line data    Source code

       1             : /* Copyright (C) 2023 Wildfire Games.
       2             :  * This file is part of 0 A.D.
       3             :  *
       4             :  * 0 A.D. is free software: you can redistribute it and/or modify
       5             :  * it under the terms of the GNU General Public License as published by
       6             :  * the Free Software Foundation, either version 2 of the License, or
       7             :  * (at your option) any later version.
       8             :  *
       9             :  * 0 A.D. is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :  * GNU General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU General Public License
      15             :  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
      16             :  */
      17             : 
      18             : #ifndef INCLUDED_RENDERER_BACKEND_VULKAN_DESCRIPTORMANAGER
      19             : #define INCLUDED_RENDERER_BACKEND_VULKAN_DESCRIPTORMANAGER
      20             : 
      21             : #include "renderer/backend/Sampler.h"
      22             : #include "renderer/backend/vulkan/Texture.h"
      23             : 
      24             : #include <glad/vulkan.h>
      25             : #include <limits>
      26             : #include <memory>
      27             : #include <unordered_map>
      28             : #include <utility>
      29             : #include <vector>
      30             : 
      31             : namespace Renderer
      32             : {
      33             : 
      34             : namespace Backend
      35             : {
      36             : 
      37             : namespace Vulkan
      38             : {
      39             : 
      40             : class CDevice;
      41             : 
      42             : class CDescriptorManager
      43             : {
      44             : public:
      45             :     CDescriptorManager(CDevice* device, const bool useDescriptorIndexing);
      46             :     ~CDescriptorManager();
      47             : 
      48           0 :     bool UseDescriptorIndexing() const { return m_UseDescriptorIndexing; }
      49             : 
      50             :     /**
      51             :      * @return a single type descriptor set layout with the number of bindings
      52             :      * equals to the size. The returned layout is owned by the manager.
      53             :      */
      54             :     VkDescriptorSetLayout GetSingleTypeDescritorSetLayout(
      55             :         VkDescriptorType type, const uint32_t size);
      56             : 
      57             :     VkDescriptorSet GetSingleTypeDescritorSet(
      58             :         VkDescriptorType type, VkDescriptorSetLayout layout,
      59             :         const std::vector<CTexture::UID>& texturesUID,
      60             :         const std::vector<CTexture*>& textures);
      61             : 
      62             :     uint32_t GetUniformSet() const;
      63             : 
      64             :     uint32_t GetTextureDescriptor(CTexture* texture);
      65             :     void OnTextureDestroy(const CTexture::UID uid);
      66             : 
      67             :     const VkDescriptorSetLayout& GetDescriptorIndexingSetLayout() const { return m_DescriptorIndexingSetLayout; }
      68           0 :     const VkDescriptorSetLayout& GetUniformDescriptorSetLayout() const { return m_UniformDescriptorSetLayout; }
      69           0 :     const VkDescriptorSet& GetDescriptorIndexingSet() { return m_DescriptorIndexingSet; }
      70             : 
      71           0 :     const std::vector<VkDescriptorSetLayout>& GetDescriptorSetLayouts() const { return m_DescriptorSetLayouts; }
      72             : 
      73             : private:
      74           0 :     struct SingleTypePool
      75             :     {
      76             :         VkDescriptorSetLayout layout;
      77             :         VkDescriptorPool pool;
      78             :         int16_t firstFreeIndex = 0;
      79             :         std::vector<std::pair<VkDescriptorSet, int16_t>> elements;
      80             :     };
      81             :     SingleTypePool& GetSingleTypePool(const VkDescriptorType type, const uint32_t size);
      82             : 
      83             :     CDevice* m_Device = nullptr;
      84             : 
      85             :     bool m_UseDescriptorIndexing = false;
      86             : 
      87             :     VkDescriptorPool m_DescriptorIndexingPool = VK_NULL_HANDLE;
      88             :     VkDescriptorSet m_DescriptorIndexingSet = VK_NULL_HANDLE;
      89             :     VkDescriptorSetLayout m_DescriptorIndexingSetLayout = VK_NULL_HANDLE;
      90             :     VkDescriptorSetLayout m_UniformDescriptorSetLayout = VK_NULL_HANDLE;
      91             :     std::vector<VkDescriptorSetLayout> m_DescriptorSetLayouts;
      92             : 
      93             :     static constexpr uint32_t DESCRIPTOR_INDEXING_BINDING_SIZE = 16384;
      94             :     static constexpr uint32_t NUMBER_OF_BINDINGS_PER_DESCRIPTOR_INDEXING_SET = 3;
      95             : 
      96           0 :     struct DescriptorIndexingBindingMap
      97             :     {
      98             :         static_assert(std::numeric_limits<int16_t>::max() >= DESCRIPTOR_INDEXING_BINDING_SIZE);
      99             :         int16_t firstFreeIndex = 0;
     100             :         std::vector<int16_t> elements;
     101             :         std::unordered_map<CTexture::UID, int16_t> map;
     102             :     };
     103             :     std::array<DescriptorIndexingBindingMap, NUMBER_OF_BINDINGS_PER_DESCRIPTOR_INDEXING_SET>
     104             :         m_DescriptorIndexingBindings;
     105             :     std::unordered_map<CTexture::UID, uint32_t> m_TextureToBindingMap;
     106             : 
     107             :     std::unordered_map<VkDescriptorType, std::vector<SingleTypePool>> m_SingleTypePools;
     108             :     std::unordered_map<CTexture::UID, std::vector<std::tuple<VkDescriptorType, uint8_t, int16_t>>> m_TextureSingleTypePoolMap;
     109             : 
     110             :     using SingleTypeCacheKey = std::pair<VkDescriptorSetLayout, std::vector<CTexture::UID>>;
     111             :     struct SingleTypeCacheKeyHash
     112             :     {
     113             :         size_t operator()(const SingleTypeCacheKey& key) const;
     114             :     };
     115             :     std::unordered_map<SingleTypeCacheKey, VkDescriptorSet, SingleTypeCacheKeyHash> m_SingleTypeSets;
     116             : };
     117             : 
     118             : } // namespace Vulkan
     119             : 
     120             : } // namespace Backend
     121             : 
     122             : } // namespace Renderer
     123             : 
     124             : #endif // INCLUDED_RENDERER_BACKEND_VULKAN_DESCRIPTORMANAGER