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dd735c9179
* [flutter_runner] Reland "[flutter_runner] Improve frame scheduling" This is a reland of e28c8beaca82998396aacbd37a03942892654e2b Original change's description: > [flutter_runner] Improve frame scheduling > > FL-233 #comment > > This allows the paint tasks for the next frame to execute in parallel > with presentation of last frame but still provides back-pressure to > prevent us from queuing up even more work. > > Vsync would be disabled whenever a presentation callback was pending > prior to this change. That had the outcome of causing us to almost > always miss one vsync interval. By not turning off vsync until > another Present call is pending we avoid this problem. > > Test: fx shell run fuchsia-pkg://fuchsia.com/basemgr#meta/basemgr.cmx --base_shell=fuchsia-pkg://fuchsia.com/spinning_cube#meta/spinning_cube.cmx > Test: topaz input latency benchmarks > Test: end-2-end tests > Change-Id: I46440052cd4f98cb0992ec5027584be80f4fb9d3 Change-Id: I1904683d0dfa509ef28482c4b751c28931ab7647 * fix stuff
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
// Copyright 2013 The Flutter Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#ifndef FLUTTER_SHELL_PLATFORM_FUCHSIA_SESSION_CONNECTION_H_
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#define FLUTTER_SHELL_PLATFORM_FUCHSIA_SESSION_CONNECTION_H_
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#include <fuchsia/ui/gfx/cpp/fidl.h>
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#include <fuchsia/ui/scenic/cpp/fidl.h>
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#include <fuchsia/ui/views/cpp/fidl.h>
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#include <lib/fidl/cpp/interface_handle.h>
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#include <lib/fidl/cpp/optional.h>
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#include <lib/fit/function.h>
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#include <lib/ui/scenic/cpp/resources.h>
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#include <lib/ui/scenic/cpp/session.h>
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#include "flutter/flow/compositor_context.h"
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#include "flutter/flow/scene_update_context.h"
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#include "flutter/fml/closure.h"
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#include "flutter/fml/macros.h"
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#include "flutter/fml/trace_event.h"
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#include "vulkan_surface_producer.h"
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namespace flutter_runner {
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// The component residing on the GPU thread that is responsible for
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// maintaining the Scenic session connection and presenting node updates.
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class SessionConnection final {
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public:
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SessionConnection(std::string debug_label,
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fuchsia::ui::views::ViewToken view_token,
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fidl::InterfaceHandle<fuchsia::ui::scenic::Session> session,
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fml::closure session_error_callback,
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zx_handle_t vsync_event_handle);
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~SessionConnection();
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bool has_metrics() const { return scene_update_context_.has_metrics(); }
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const fuchsia::ui::gfx::MetricsPtr& metrics() const {
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return scene_update_context_.metrics();
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}
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void set_metrics(const fuchsia::ui::gfx::Metrics& metrics) {
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fuchsia::ui::gfx::Metrics metrics_copy;
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metrics.Clone(&metrics_copy);
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scene_update_context_.set_metrics(
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fidl::MakeOptional(std::move(metrics_copy)));
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}
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flutter::SceneUpdateContext& scene_update_context() {
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return scene_update_context_;
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}
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scenic::ContainerNode& root_node() { return root_node_; }
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scenic::View* root_view() { return &root_view_; }
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void Present(flutter::CompositorContext::ScopedFrame& frame);
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void OnSessionSizeChangeHint(float width_change_factor,
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float height_change_factor);
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private:
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const std::string debug_label_;
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scenic::Session session_wrapper_;
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scenic::View root_view_;
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scenic::EntityNode root_node_;
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std::unique_ptr<VulkanSurfaceProducer> surface_producer_;
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flutter::SceneUpdateContext scene_update_context_;
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zx_handle_t vsync_event_handle_;
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// A flow event trace id for following |Session::Present| calls into
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// Scenic. This will be incremented each |Session::Present| call. By
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// convention, the Scenic side will also contain its own trace id that
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// begins at 0, and is incremented each |Session::Present| call.
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uint64_t next_present_trace_id_ = 0;
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uint64_t next_present_session_trace_id_ = 0;
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uint64_t processed_present_session_trace_id_ = 0;
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bool presentation_callback_pending_ = false;
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bool present_session_pending_ = false;
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void EnqueueClearOps();
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void PresentSession();
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static void ToggleSignal(zx_handle_t handle, bool raise);
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FML_DISALLOW_COPY_AND_ASSIGN(SessionConnection);
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};
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} // namespace flutter_runner
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#endif // FLUTTER_SHELL_PLATFORM_FUCHSIA_SESSION_CONNECTION_H_
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