device.hpp

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#pragma once


#include <planet/vk/memory.hpp>
#include <planet/vk/queue.hpp>

#include <mutex>


namespace planet::vk {


    struct extensions;
    class instance;

Vulkan device

The logical graphics device we're using

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    class device final {
        friend class queue;


        VkDevice handle = VK_NULL_HANDLE;

        std::mutex transfer_queue_mutex;
        std::optional<std::pair<VkQueue, std::uint32_t>> held_transfer_queue =
                {};
        void return_transfer_queue(VkQueue, std::uint32_t);


      public:
        device(vk::instance const &, extensions const &);
        ~device();


        vk::instance const &instance;


        device(device const &) = delete;
        device(device &&) = delete;
        device &operator=(device const &) = delete;
        device &operator=(device &&i) = delete;


        VkDevice get() const noexcept { return handle; }

        VkQueue graphics_queue = VK_NULL_HANDLE, present_queue = VK_NULL_HANDLE;

Fetch a transfer queue

If there is no transfer queue left then it will return an empty vk::queue

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        vk::queue transfer_queue();

Wait for the device to become idle

 
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        void wait_idle() const;

Allocators

Allocate start-up memory

Use this to allocate device memory that is used for very long life times. For example, geometry or textures that art loaded at start up and then used for the entire life of the application.

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        device_memory_allocator startup_memory{"startup", *this};

Allocate staging memory

Use this for staging memory. The buffers or images etc. allocated here should be for very short lived allocations.

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        device_memory_allocator staging_memory{"staging", *this};
    };


}