descriptorsetcache.h

/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/. */
 
#pragma once
 
 // Internal includes
#include "vk_mem_alloc.h"
#include "renderutils.h"
 
// External Includes
#include <vector>
#include <list>
#include <array>
#include <utility/dllexport.h>
#include <vulkan/vulkan_core.h>
 
namespace nap
{
    // Forward Declares
    class UniformBufferObject;
    class SamplerInstance;
    class RenderService;
    class DescriptorSetAllocator;
 
    struct DescriptorSet
    {
        VkDescriptorSetLayout               mLayout;
        VkDescriptorSet                     mSet;
        std::vector<BufferData>             mBuffers;
 
        const std::vector<BufferData>& getBuffers() const { return mBuffers; }
    };
 
    class NAPAPI DescriptorSetCache final
    {
    public:
        DescriptorSetCache(RenderService& renderService, VkDescriptorSetLayout layout, DescriptorSetAllocator& descriptorSetAllocator);
        ~DescriptorSetCache();
 
        const DescriptorSet& acquire(const std::vector<UniformBufferObject>& uniformBufferObjects, int numStorageBufferObjects, int numSamplers);
 
        void release(int frameIndex);
 
    private:
        using DescriptorSetList = std::list<DescriptorSet>;
        using DescriptorSetFrameList = std::vector<DescriptorSetList>;
 
        RenderService*                      mRenderService;
        DescriptorSetAllocator*             mDescriptorSetAllocator;    
        VkDescriptorSetLayout               mLayout;                    
        DescriptorSetList                   mFreeList;                  
        DescriptorSetFrameList              mUsedList;                  
    };
 
} // nap