swapchain.h

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#ifndef NNGN_GRAPHICS_VULKAN_SWAPCHAIN_H
#define NNGN_GRAPHICS_VULKAN_SWAPCHAIN_H
 
#include <span>
#include <tuple>
 
#include "graphics/graphics.h"
 
#include "resource.h"
#include "vulkan.h"
 
namespace nngn {
 
class Device;
class DeviceMemory;
class Instance;
 
class SwapChain {
public:
    struct PresentContext {
        std::uint32_t img_idx;
        VkSemaphore wait, signal;
        VkFence fence;
    };
    NNGN_MOVE_ONLY(SwapChain)
    SwapChain(void) = default;
    ~SwapChain(void);
    VkSwapchainKHR id(void) const { return this->h; }
    VkSurfaceKHR surface(void) const { return this->m_surface; }
    std::span<const VkImageView> img_views() const
        { return std::span{this->m_img_views}; }
    std::span<const VkFramebuffer> frame_buffers() const
        { return std::span{this->m_frame_buffers}; }
    std::size_t cur_frame() const { return this->i_frame; }
    void set_present_mode(VkPresentModeKHR m) { this->present_mode = m; }
    void set_surface(VkSurfaceKHR s) { this->m_surface = s; }
    void init(
        VkInstance inst, DeviceMemory *dev_mem,
        VkSurfaceFormatKHR format, VkFormat depth_format,
        VkPresentModeKHR mode);
    bool recreate(
        const Instance &inst, const Device &dev, std::uint32_t n_images,
        VkRenderPass render_pass, VkExtent2D extent,
        VkSurfaceTransformFlagBitsKHR transform);
    std::pair<PresentContext, VkResult> acquire_img();
private:
    bool create_img_views(const Instance &inst);
    bool create_depth_img(const Instance &inst, VkExtent2D extent);
    bool create_sync_objects(const Instance &inst);
    bool create_frame_buffers(
        const Instance &inst, VkExtent2D extent, VkRenderPass render_pass);
    void destroy();
    VkSwapchainKHR h = {};
    VkInstance instance = {};
    VkSurfaceKHR m_surface = {};
    VkDevice dev = {};
    DeviceMemory *dev_mem = {};
    VkSurfaceFormatKHR format = {};
    VkPresentModeKHR present_mode = {};
    std::vector<VkImageView> m_img_views = {};
    VkFormat depth_format = {};
    Image depth_img = {};
    VkImageView depth_img_view = {};
    struct {
        std::vector<VkSemaphore> render;
        std::vector<VkSemaphore> present;
    } semaphores = {};
    struct {
        std::vector<VkFence> render;
        std::vector<VkFence> present;
    } fences = {};
    std::vector<VkFramebuffer> m_frame_buffers = {};
    std::size_t i_frame = {};
};
 
struct SurfaceInfo : Graphics::SurfaceInfo {
    VkSurfaceTransformFlagBitsKHR cur_transform = {};
    std::vector<VkSurfaceFormatKHR> formats = {};
    std::vector<Graphics::PresentMode> present_modes = {};
    void init(VkSurfaceKHR s, VkPhysicalDevice d);
    VkSurfaceFormatKHR find_format(VkSurfaceFormatKHR f) const;
    VkPresentModeKHR find_present_mode(Graphics::PresentMode m) const;
};
 
}
 
#endif