setup_backend_service()

void MayaFlux::Core::BackendWindowHandler::setup_backend_service

(

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

display_service

)

Definition at line 76 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);
    };
 
    display_service->get_current_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 || !ctx->swapchain)
            return 0;
 
        const auto& images = ctx->swapchain->get_images();
        if (ctx->current_image_index >= images.size())
            return 0;
 
        return reinterpret_cast<uint64_t>(static_cast<VkImage>(images[ctx->current_image_index]));
    };
 
    display_service->readback_swapchain_region = [this](
                                                     const std::shared_ptr<void>& window_ptr,
                                                     void* dst,
                                                     uint32_t /*x_offset*/,
                                                     uint32_t /*y_offset*/,
                                                     uint32_t pixel_width,
                                                     uint32_t pixel_height,
                                                     size_t byte_count) -> bool {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        auto* ctx = find_window_context(window);
 
        if (!ctx || !ctx->swapchain) {
            MF_RT_ERROR(Journal::Component::Core, Journal::Context::GraphicsCallback,
                "readback_swapchain_region: window '{}' has no swapchain",
                window->get_create_info().title);
            return false;
        }
 
        if (!m_resource_manager) {
            MF_RT_ERROR(Journal::Component::Core, Journal::Context::GraphicsCallback,
                "readback_swapchain_region: resource manager not set");
            return false;
        }
 
        const auto& images = ctx->swapchain->get_images();
        if (ctx->current_image_index >= images.size()) {
            MF_RT_ERROR(Journal::Component::Core, Journal::Context::GraphicsCallback,
                "readback_swapchain_region: invalid image index {} for '{}'",
                ctx->current_image_index, window->get_create_info().title);
            return false;
        }
 
        auto proxy = std::make_shared<VKImage>(
            pixel_width, pixel_height, 1U,
            ctx->swapchain->get_image_format(),
            VKImage::Usage::TEXTURE_2D,
            VKImage::Type::TYPE_2D,
            1U, 1U,
            Kakshya::DataModality::IMAGE_COLOR);
 
        VKImageResources res {};
        res.image = images[ctx->current_image_index];
        proxy->set_image_resources(res);
        proxy->set_current_layout(vk::ImageLayout::ePresentSrcKHR);
 
        m_resource_manager->download_image_data(
            proxy,
            dst,
            byte_count,
            vk::ImageLayout::ePresentSrcKHR,
            vk::PipelineStageFlagBits::eBottomOfPipe);
 
        return true;
    };
 
    display_service->ensure_depth_attachment = [this](const std::shared_ptr<void>& window_ptr) {
        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,
                "ensure_depth_attachment: window '{}' not registered",
                window->get_create_info().title);
            return;
        }
        ensure_depth_image(*ctx);
    };
 
    display_service->get_depth_image_view = [this](const std::shared_ptr<void>& window_ptr) -> void* {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        auto* ctx = find_window_context(window);
        if (!ctx || !ctx->depth_image || !ctx->depth_image->is_initialized()) {
            return nullptr;
        }
        static thread_local vk::ImageView view;
        view = ctx->depth_image->get_image_view();
        return static_cast<void*>(&view);
    };
 
    display_service->get_depth_format = [this](const std::shared_ptr<void>& window_ptr) -> uint32_t {
        auto window = std::static_pointer_cast<Window>(window_ptr);
        auto* ctx = find_window_context(window);
        if (!ctx || !ctx->depth_image || !ctx->depth_image->is_initialized()) {
            return static_cast<uint32_t>(vk::Format::eUndefined);
        }
        return static_cast<uint32_t>(ctx->depth_image->get_format());
    };
}

References MayaFlux::Journal::Core, MayaFlux::Core::BackendResourceManager::download_image_data(), ensure_depth_image(), find_window_context(), MayaFlux::Core::VKContext::get_device(), MayaFlux::Journal::GraphicsCallback, MayaFlux::Core::VKImageResources::image, MayaFlux::Kakshya::IMAGE_COLOR, m_context, m_resource_manager, m_window_contexts, MF_RT_ERROR, MF_RT_WARN, submit_and_present(), MayaFlux::Core::VKImage::TEXTURE_2D, and MayaFlux::Core::VKImage::TYPE_2D.

Here is the call graph for this function: