create_surface()

vk::SurfaceKHR MayaFlux::Core::VKContext::create_surface

(

std::shared_ptr< Window >

window

)

Create surface from window's native handles.

Parameters

window

Window to create surface for

Returns

Surface handle, or null on failure

Definition at line 74 of file VKContext.cpp.

{
    if (!window) {
        MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Cannot create surface: null window");
        return nullptr;
    }
 
#if defined(COCOA_BACKEND)
    if (m_graphics_config.windowing_backend == GlobalGraphicsConfig::WindowingBackend::COCOA) {
        auto* cocoa_window = dynamic_cast<CocoaWindow*>(window.get());
        if (!cocoa_window) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Cannot create surface: window is not a CocoaWindow");
            return nullptr;
        }
 
        const void* layer = cocoa_window->get_metal_layer();
        if (!layer) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Cannot create surface: null CAMetalLayer");
            return nullptr;
        }
 
        auto instance = static_cast<VkInstance>(m_instance.get_instance());
        auto create_metal_surface = reinterpret_cast<PFN_vkCreateMetalSurfaceEXT>(
            vkGetInstanceProcAddr(instance, "vkCreateMetalSurfaceEXT"));
        if (!create_metal_surface) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Cannot create surface: vkCreateMetalSurfaceEXT unavailable");
            return nullptr;
        }
 
        VkMetalSurfaceCreateInfoEXT info {};
        info.sType = VK_STRUCTURE_TYPE_METAL_SURFACE_CREATE_INFO_EXT;
        info.pLayer = static_cast<const CAMetalLayer*>(layer);
 
        VkSurfaceKHR c_surface {};
        VkResult result = Parallel::dispatch_main_sync([&]() {
            return create_metal_surface(instance, &info, nullptr, &c_surface);
        });
 
        if (result != VK_SUCCESS) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Failed to create Metal surface for window '{}'",
                window->get_create_info().title);
            return nullptr;
        }
 
        vk::SurfaceKHR surface(c_surface);
        m_surfaces.push_back(surface);
 
        MF_INFO(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Metal surface created for window '{}'", window->get_create_info().title);
 
        return surface;
    }
#endif
 
#if defined(WIN32_BACKEND)
    if (m_graphics_config.windowing_backend == GlobalGraphicsConfig::WindowingBackend::WINDOWS) {
        auto hwnd = static_cast<HWND>(window->get_native_handle());
        if (!hwnd) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Cannot create surface: null HWND");
            return nullptr;
        }
 
        VkWin32SurfaceCreateInfoKHR info {};
        info.sType = VK_STRUCTURE_TYPE_WIN32_SURFACE_CREATE_INFO_KHR;
        info.hinstance = GetModuleHandleW(nullptr);
        info.hwnd = hwnd;
 
        VkSurfaceKHR c_surface {};
        if (vkCreateWin32SurfaceKHR(
                static_cast<VkInstance>(m_instance.get_instance()),
                &info, nullptr, &c_surface)
            != VK_SUCCESS) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Failed to create Win32 Vulkan surface for window '{}'",
                window->get_create_info().title);
            return nullptr;
        }
 
        vk::SurfaceKHR surface(c_surface);
        m_surfaces.push_back(surface);
        MF_INFO(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Win32 surface created for window '{}'", window->get_create_info().title);
        return surface;
    }
#elif defined(WAYLAND_BACKEND)
    {
        auto* wl_display = static_cast<struct wl_display*>(window->get_native_display());
        auto* wl_surface = static_cast<struct wl_surface*>(window->get_native_handle());
        if (!wl_display || !wl_surface) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Cannot create surface: null Wayland display or surface handle");
            return nullptr;
        }
 
        VkWaylandSurfaceCreateInfoKHR info {};
        info.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
        info.display = wl_display;
        info.surface = wl_surface;
 
        VkSurfaceKHR c_surface {};
        if (vkCreateWaylandSurfaceKHR(
                static_cast<VkInstance>(m_instance.get_instance()),
                &info, nullptr, &c_surface)
            != VK_SUCCESS) {
            MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
                "Failed to create Wayland Vulkan surface for window '{}'",
                window->get_create_info().title);
            return nullptr;
        }
 
        vk::SurfaceKHR surface(c_surface);
        m_surfaces.push_back(surface);
        MF_INFO(Journal::Component::Core, Journal::Context::GraphicsBackend,
            "Wayland surface created for window '{}'", window->get_create_info().title);
        return surface;
    }
#endif
 
    MF_ERROR(Journal::Component::Core, Journal::Context::GraphicsBackend,
        "No windowing backend available for surface creation");
    return nullptr;
}

References MayaFlux::Core::GlobalGraphicsConfig::COCOA, MayaFlux::Journal::Core, MayaFlux::Parallel::dispatch_main_sync(), MayaFlux::Core::VKInstance::get_instance(), MayaFlux::Journal::GraphicsBackend, instance, m_graphics_config, m_instance, m_surfaces, MF_ERROR, MF_INFO, window, MayaFlux::Core::GlobalGraphicsConfig::windowing_backend, and MayaFlux::Core::GlobalGraphicsConfig::WINDOWS.

Referenced by MayaFlux::Core::BackendWindowHandler::register_window().

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