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This CL adds a simple scheduler for animation frames that holds a given interval in a given phase. The scheduler can be told the estimated duration of the BeginFrame callback and can adjust the callback to hit a given vsync interval. This CL also makes ganesh_app use this scheduler to animate. R=jamesr@chromium.org, ernstm@chromium.org Review URL: https://codereview.chromium.org/731893002
18 lines
514 B
C++
18 lines
514 B
C++
// Copyright 2014 The Chromium 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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#include "sky/scheduler/time_interval.h"
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#include <cstdlib>
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namespace sky {
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base::TimeTicks TimeInterval::NextAfter(base::TimeTicks when) {
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int64 offset = std::abs((when - base).ToInternalValue());
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base::TimeDelta excess =
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base::TimeDelta::FromInternalValue(offset % duration.ToInternalValue());
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return when + duration - excess;
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}
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}
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