DescriptorIndexAllocator.h

#pragma once
#include <cstdint>
#include <stack>
#include <vector>
 
namespace Engine::Core
{
class DescriptorIndexAllocator
{
public:
    DescriptorIndexAllocator() = delete;

    explicit DescriptorIndexAllocator(int descriptorCount);

    [[nodiscard]] uint32_t allocate();

    void reserve( uint32_t index );

    void free(uint32_t index);

    [[nodiscard]] const std::vector<uint32_t> &getUsedIndices() const;

    void reset(int newSize);

    size_t getCapacity() const;
 
private:
    std::stack<uint32_t> freeIndices;
    std::vector<uint32_t> usedIndices;
    uint32_t capacity;
};
}