gui_window_vulkan.hpp

// Copyright Take Vos 2019-2020.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "gui_window.hpp"
#include <vulkan/vulkan.hpp>
#include <vk_mem_alloc.h>
#include <optional>
 
namespace tt {
class gui_device_vulkan;
 
namespace pipeline_image {
class pipeline_image;
}
namespace pipeline_flat {
class pipeline_flat;
}
namespace pipeline_box {
class pipeline_box;
}
namespace pipeline_SDF {
class pipeline_SDF;
}
namespace pipeline_tone_mapper {
class pipeline_tone_mapper;
}
 
struct swapchain_image_info {
    vk::Image image;
    vk::ImageView image_view;
    vk::Framebuffer frame_buffer;
    aarectangle redraw_rectangle;
    bool layout_is_present = false;
};
 
class gui_window_vulkan : public gui_window {
public:
    vk::SurfaceKHR intrinsic;
 
    vk::SwapchainKHR swapchain;
 
    static constexpr uint32_t defaultNumberOfSwapchainImages = 2;
 
    int nrSwapchainImages;
    vk::Extent2D swapchainImageExtent;
    vk::SurfaceFormatKHR swapchainImageFormat;
    std::vector<swapchain_image_info> swapchain_image_infos;
 
    static const vk::Format depthImageFormat = vk::Format::eD32Sfloat;
    VmaAllocation depthImageAllocation;
    vk::Image depthImage;
    vk::ImageView depthImageView;
 
    static const vk::Format colorImageFormat = vk::Format::eR16G16B16A16Sfloat;
    std::array<VmaAllocation,2> colorImageAllocations;
    std::array<vk::Image,2> colorImages;
    std::array<vk::ImageView,2> colorImageViews;
    std::array<vk::DescriptorImageInfo, 2> colorDescriptorImageInfos;
 
    vk::RenderPass renderPass;
 
    vk::CommandBuffer commandBuffer;
 
    vk::Semaphore imageAvailableSemaphore;
    vk::Semaphore renderFinishedSemaphore;
    vk::Fence renderFinishedFence;
 
    std::unique_ptr<pipeline_image::pipeline_image> imagePipeline;
    std::unique_ptr<pipeline_flat::pipeline_flat> flatPipeline;
    std::unique_ptr<pipeline_box::pipeline_box> boxPipeline;
    std::unique_ptr<pipeline_SDF::pipeline_SDF> SDFPipeline;
    std::unique_ptr<pipeline_tone_mapper::pipeline_tone_mapper> toneMapperPipeline;
 
    gui_window_vulkan(gui_system &system, std::weak_ptr<gui_window_delegate> const &delegate, label const &title);
    ~gui_window_vulkan();
 
    gui_window_vulkan(const gui_window_vulkan &) = delete;
    gui_window_vulkan &operator=(const gui_window_vulkan &) = delete;
    gui_window_vulkan(gui_window_vulkan &&) = delete;
    gui_window_vulkan &operator=(gui_window_vulkan &&) = delete;
 
    void init() override;
 
    gui_device_vulkan &vulkan_device() const noexcept;
 
    void render(hires_utc_clock::time_point displayTimePoint) override;
 
    virtual vk::SurfaceKHR getSurface() const = 0;
 
protected:
    void teardown() override;
    void build() override;
    
private:
    std::optional<uint32_t> acquireNextImageFromSwapchain();
    void presentImageToQueue(uint32_t frameBufferIndex, vk::Semaphore renderFinishedSemaphore);
 
    void fill_command_buffer(swapchain_image_info &current_image, aarectangle scissor_rectangle);
    void submitCommandBuffer();
 
    bool readSurfaceExtent();
    bool checkSurfaceExtent();
 
    void buildDevice();
    void buildSemaphores();
    void teardownSemaphores();
    gui_window_state buildSwapchain();
    void teardownSwapchain();
    void buildCommandBuffers();
    void teardownCommandBuffers();
    void buildRenderPasses();
    void teardownRenderPasses();
    void buildFramebuffers();
    void teardownFramebuffers();
    void buildPipelines();
    void teardownPipelines();
    bool buildSurface();
    void teardownSurface();
    void teardownDevice();
 
    void waitIdle();
    std::tuple<uint32_t, vk::Extent2D> getImageCountAndExtent();
};
 
}