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// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CC_SCHEDULER_SCHEDULER_SETTINGS_H_
#define CC_SCHEDULER_SCHEDULER_SETTINGS_H_
#include <memory>
#include "base/memory/ref_counted.h"
#include "base/time/time.h"
#include "base/values.h"
#include "cc/cc_export.h"
namespace base {
namespace trace_event {
class ConvertableToTraceFormat;
}
}
namespace cc {
class CC_EXPORT SchedulerSettings {
public:
SchedulerSettings();
SchedulerSettings(const SchedulerSettings& other);
~SchedulerSettings();
// Whether a BeginMainFrame should be issued while there is a pending-tree
// still waiting to be activated. This is disabled by default for the UI
// compositor, and enabled for renderers (unless there are too few cores).
bool main_frame_before_activation_enabled = false;
// Whether commits should happen directly to the active tree, skipping the
// pending tree. This is turned on only for the UI compositor (and in some
// tests).
bool commit_to_active_tree = false;
// This is enabled for android-webview.
bool using_synchronous_renderer_compositor = false;
// This is used to determine whether some begin-frames should be skipped
// (either in the main-thread or the compositor-thread) if previous frames
// have had high latency.
// It is enabled by default on desktop platforms, and has been recently
// disabled by default on android. It may be disabled on all platforms. See
// more in https://crbug.com/933846
bool enable_impl_latency_recovery = true;
bool enable_main_latency_recovery = true;
// Turning this on effectively disables pipelining of compositor frame
// production stages by waiting for each stage to complete before producing
// the frame. Turning this on also disables latency-recovery. This is enabled
// for headless-mode and some tests, and disabled elsewhere by default.
bool wait_for_all_pipeline_stages_before_draw = false;
int maximum_number_of_failed_draws_before_draw_is_forced = 3;
std::unique_ptr<base::trace_event::ConvertableToTraceFormat> AsValue() const;
};
} // namespace cc
#endif // CC_SCHEDULER_SCHEDULER_SETTINGS_H_
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