| // Copyright 2018 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "src/ui/scenic/bin/app.h" |
| |
| #include <lib/fit/bridge.h> |
| #include <lib/fit/function.h> |
| #include <lib/fit/single_threaded_executor.h> |
| #include <lib/syslog/cpp/logger.h> |
| |
| #ifdef SCENIC_ENABLE_GFX_SUBSYSTEM |
| #include "src/ui/scenic/lib/gfx/gfx_system.h" |
| #endif |
| |
| #ifdef SCENIC_ENABLE_INPUT_SUBSYSTEM |
| #include "src/ui/scenic/lib/input/input_system.h" |
| #endif |
| |
| #include "src/lib/cobalt/cpp/cobalt_logger.h" |
| #include "src/ui/scenic/lib/gfx/api/internal_snapshot_impl.h" |
| #include "src/ui/scenic/lib/scheduling/default_frame_scheduler.h" |
| #include "src/ui/scenic/lib/scheduling/frame_metrics_registry.cb.h" |
| #include "src/ui/scenic/lib/scheduling/windowed_frame_predictor.h" |
| |
| namespace { |
| |
| // Wait for /dev/class/display-controller on x86 as that's sufficient for Intel GPU driver and |
| // supports AEMU and swiftshader, which don't depend on devices in /dev/class/gpu. |
| // |
| // TODO(SCN-568): Scenic should not be aware of these type of dependencies. |
| #if defined(__x86_64__) |
| static const std::string kDependencyDir = "/dev/class/display-controller"; |
| #else |
| static const std::string kDependencyDir = "/dev/class/gpu"; |
| #endif |
| |
| // A limited System used only to limit Scenic from fully initializing, without introducing a new |
| // command dispatcher. |
| // |
| // TODO(SCN-1506): Find a better way to represent this other than creating an entire dummy system. |
| class Dependency : public scenic_impl::System { |
| public: |
| using System::System; |
| scenic_impl::CommandDispatcherUniquePtr CreateCommandDispatcher( |
| scenic_impl::CommandDispatcherContext context) override { |
| return nullptr; |
| }; |
| }; |
| } // namespace |
| |
| namespace scenic_impl { |
| |
| DisplayInfoDelegate::DisplayInfoDelegate(std::shared_ptr<display::Display> display_) |
| : display_(display_) { |
| FXL_CHECK(display_); |
| } |
| |
| void DisplayInfoDelegate::GetDisplayInfo( |
| fuchsia::ui::scenic::Scenic::GetDisplayInfoCallback callback) { |
| auto info = ::fuchsia::ui::gfx::DisplayInfo(); |
| info.width_in_px = display_->width_in_px(); |
| info.height_in_px = display_->height_in_px(); |
| |
| callback(std::move(info)); |
| } |
| |
| void DisplayInfoDelegate::GetDisplayOwnershipEvent( |
| fuchsia::ui::scenic::Scenic::GetDisplayOwnershipEventCallback callback) { |
| // These constants are defined as raw hex in the FIDL file, so we confirm here that they are the |
| // same values as the expected constants in the ZX headers. |
| static_assert(fuchsia::ui::scenic::displayNotOwnedSignal == ZX_USER_SIGNAL_0, "Bad constant"); |
| static_assert(fuchsia::ui::scenic::displayOwnedSignal == ZX_USER_SIGNAL_1, "Bad constant"); |
| |
| zx::event dup; |
| if (display_->ownership_event().duplicate(ZX_RIGHTS_BASIC, &dup) != ZX_OK) { |
| FXL_LOG(ERROR) << "Display ownership event duplication error."; |
| callback(zx::event()); |
| } else { |
| callback(std::move(dup)); |
| } |
| } |
| |
| App::App(std::unique_ptr<sys::ComponentContext> app_context, inspect_deprecated::Node inspect_node, |
| fit::closure quit_callback) |
| : executor_(async_get_default_dispatcher()), |
| app_context_(std::move(app_context)), |
| // TODO(40997): subsystems requiring graceful shutdown *on a loop* should register themselves. |
| // It is preferable to cleanly shutdown using destructors only, if possible. |
| shutdown_manager_( |
| ShutdownManager::New(async_get_default_dispatcher(), std::move(quit_callback))), |
| scenic_(app_context_.get(), std::move(inspect_node), |
| [weak = std::weak_ptr<ShutdownManager>(shutdown_manager_)] { |
| if (auto strong = weak.lock()) { |
| strong->Shutdown(LifecycleControllerImpl::kShutdownTimeout); |
| } |
| }), |
| lifecycle_controller_impl_(app_context_.get(), |
| std::weak_ptr<ShutdownManager>(shutdown_manager_)) { |
| FXL_DCHECK(!device_watcher_); |
| |
| fit::bridge<escher::EscherUniquePtr> escher_bridge; |
| fit::bridge<std::shared_ptr<scenic_impl::display::Display>> display_bridge; |
| |
| device_watcher_ = fsl::DeviceWatcher::Create( |
| kDependencyDir, [this, completer = std::move(escher_bridge.completer)]( |
| int dir_fd, std::string filename) mutable { |
| completer.complete_ok(gfx::GfxSystem::CreateEscher(app_context_.get())); |
| device_watcher_.reset(); |
| }); |
| |
| display_manager_.WaitForDefaultDisplayController( |
| [this, completer = std::move(display_bridge.completer)]() mutable { |
| completer.complete_ok(display_manager_.default_display_shared()); |
| }); |
| |
| auto p = |
| fit::join_promises(escher_bridge.consumer.promise(), display_bridge.consumer.promise()) |
| .and_then([this](std::tuple<fit::result<escher::EscherUniquePtr>, |
| fit::result<std::shared_ptr<scenic_impl::display::Display>>>& |
| results) { |
| InitializeServices(std::move(std::get<0>(results).value()), |
| std::move(std::get<1>(results).value())); |
| }); |
| |
| executor_.schedule_task(std::move(p)); |
| } |
| |
| void App::InitializeServices(escher::EscherUniquePtr escher, |
| std::shared_ptr<display::Display> display) { |
| if (!display) { |
| FXL_LOG(ERROR) << "No default display, Graphics system exiting"; |
| shutdown_manager_->Shutdown(LifecycleControllerImpl::kShutdownTimeout); |
| return; |
| } |
| |
| if (!escher || !escher->device()) { |
| FXL_LOG(ERROR) << "No Vulkan on device, Graphics system exiting."; |
| shutdown_manager_->Shutdown(LifecycleControllerImpl::kShutdownTimeout); |
| return; |
| } |
| |
| escher_ = std::move(escher); |
| |
| std::unique_ptr<cobalt::CobaltLogger> cobalt_logger = cobalt::NewCobaltLoggerFromProjectName( |
| async_get_default_dispatcher(), app_context_->svc(), cobalt_registry::kProjectName); |
| if (cobalt_logger == nullptr) { |
| FX_LOGS(ERROR) << "CobaltLogger creation failed!"; |
| } |
| frame_scheduler_ = std::make_shared<scheduling::DefaultFrameScheduler>( |
| display, |
| std::make_unique<scheduling::WindowedFramePredictor>( |
| scheduling::DefaultFrameScheduler::kInitialRenderDuration, |
| scheduling::DefaultFrameScheduler::kInitialUpdateDuration), |
| scenic_.inspect_node()->CreateChild("FrameScheduler"), std::move(cobalt_logger)); |
| |
| engine_.emplace(app_context_.get(), frame_scheduler_, escher_->GetWeakPtr(), |
| scenic_.inspect_node()->CreateChild("Engine")); |
| frame_scheduler_->SetFrameRenderer(engine_->GetWeakPtr()); |
| scenic_.SetFrameScheduler(frame_scheduler_); |
| |
| #ifdef SCENIC_ENABLE_GFX_SUBSYSTEM |
| auto gfx = scenic_.RegisterSystem<gfx::GfxSystem>(&engine_.value(), escher_->GetWeakPtr(), |
| &sysmem_, &display_manager_); |
| |
| FXL_DCHECK(gfx); |
| |
| frame_scheduler_->AddSessionUpdater(gfx->GetWeakPtr()); |
| scenic_.SetScreenshotDelegate(gfx); |
| display_info_delegate_ = std::make_unique<DisplayInfoDelegate>(display); |
| scenic_.SetDisplayInfoDelegate(display_info_delegate_.get()); |
| #endif |
| |
| #ifdef SCENIC_ENABLE_INPUT_SUBSYSTEM |
| auto input = scenic_.RegisterSystem<input::InputSystem>(&engine_.value()); |
| FXL_DCHECK(input); |
| #endif |
| |
| // Create the snapshotter and pass it to scenic. |
| auto snapshotter = |
| std::make_unique<gfx::InternalSnapshotImpl>(engine_->scene_graph(), escher_->GetWeakPtr()); |
| scenic_.InitializeSnapshotService(std::move(snapshotter)); |
| |
| scenic_.SetInitialized(); |
| } |
| |
| } // namespace scenic_impl |