setup_backend_service()

void MayaFlux::Core::BackendWindowHandler::setup_backend_service

(

const std::shared_ptr< Registry::Service::DisplayService > &

display_service

)

Definition at line 58 of file BackendWindowHandler.cpp.

{
    display_service->submit_and_present = [this](
                                              const std::shared_ptr<void>& window_ptr,
                                              uint64_t primary_cmd_bits) {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        vk::CommandBuffer primary_cmd = *reinterpret_cast<vk::CommandBuffer*>(&primary_cmd_bits);
 
        this->submit_and_present(window, primary_cmd);
    };
 
    display_service->wait_idle = [this]() {
        m_context.get_device().waitIdle();
    };
 
    display_service->resize_surface = [this](const std::shared_ptr<void>& window_ptr, uint32_t width, uint32_t height) {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        window->set_size(width, height);
        for (auto& ctx : m_window_contexts) {
            if (ctx.window == window) {
                ctx.needs_recreation = true;
                break;
            }
        }
    };
 
    display_service->get_swapchain_image_count = [this](const std::shared_ptr<void>& window_ptr) -> uint32_t {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        for (const auto& ctx : m_window_contexts) {
            if (ctx.window == window) {
                return static_cast<uint32_t>(ctx.swapchain->get_image_count());
            }
        }
        return 0;
    };
 
    display_service->get_swapchain_format = [this](const std::shared_ptr<void>& window_ptr) -> uint32_t {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        for (const auto& ctx : m_window_contexts) {
            if (ctx.window == window) {
                return static_cast<int>(ctx.swapchain->get_image_format());
            }
        }
        return 0;
    };
 
    display_service->get_swapchain_extent = [this](
                                                const std::shared_ptr<void>& window_ptr,
                                                uint32_t& out_width,
                                                uint32_t& out_height) {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        auto* context = find_window_context(window);
 
        if (context && context->swapchain) {
            auto extent = context->swapchain->get_extent();
            out_width = extent.width;
            out_height = extent.height;
        } else {
            out_width = 0;
            out_height = 0;
        }
    };
 
    display_service->acquire_next_swapchain_image = [this](const std::shared_ptr<void>& window_ptr) -> uint64_t {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        auto* ctx = find_window_context(window);
        if (!ctx) {
            MF_RT_ERROR(Journal::Component::Core, Journal::Context::GraphicsCallback,
                "Window '{}' not registered for swapchain acquisition",
                window->get_create_info().title);
            return 0;
        }
 
        auto device = m_context.get_device();
        size_t frame_index = ctx->current_frame;
        auto& in_flight = ctx->in_flight[frame_index];
        auto& image_available = ctx->image_available[frame_index];
 
        if (device.waitForFences(1, &in_flight, VK_TRUE, UINT64_MAX) == vk::Result::eTimeout) {
            MF_RT_WARN(Journal::Component::Core, Journal::Context::GraphicsCallback,
                "Fence timeout during swapchain acquisition for window '{}'",
                window->get_create_info().title);
            return 0;
        }
 
        auto image_index_opt = ctx->swapchain->acquire_next_image(image_available);
        if (!image_index_opt.has_value()) {
            ctx->needs_recreation = true;
            return 0;
        }
 
        ctx->current_image_index = image_index_opt.value();
 
        if (device.resetFences(1, &in_flight) != vk::Result::eSuccess) {
            MF_RT_ERROR(Journal::Component::Core, Journal::Context::GraphicsCallback,
                "Failed to reset fence for window '{}'",
                window->get_create_info().title);
            return 0;
        }
 
        const auto& images = ctx->swapchain->get_images();
        VkImage raw = images[ctx->current_image_index];
        return reinterpret_cast<uint64_t>(raw);
    };
 
    display_service->get_current_image_view = [this](const std::shared_ptr<void>& window_ptr) -> void* {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        auto* context = find_window_context(window);
 
        if (!context || !context->swapchain) {
            return nullptr;
        }
 
        const auto& image_views = context->swapchain->get_image_views();
        if (context->current_image_index >= image_views.size()) {
            MF_RT_ERROR(Journal::Component::Core, Journal::Context::GraphicsCallback,
                "Invalid current_image_index {} for window '{}' (swapchain has {} images)",
                context->current_image_index,
                window->get_create_info().title,
                image_views.size());
            return nullptr;
        }
 
        static thread_local vk::ImageView view;
        view = image_views[context->current_image_index];
        return static_cast<void*>(&view);
    };
}

References MayaFlux::Journal::Core, find_window_context(), MayaFlux::Core::VKContext::get_device(), MayaFlux::Journal::GraphicsCallback, m_context, m_window_contexts, MF_RT_ERROR, MF_RT_WARN, and submit_and_present().

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