skia2/tools/viewer/StatsLayer.h
Robert Phillips 9882dae24d Reduce usage of SkCanvas::flush
SkCanvas::flush is problematic and we wish to deprecate it. As a first step, this CL begins to remove Skia's internal usage of it.

Ideally clients would use SkSurface::flush and/or GrContext::flush.

Change-Id: I39bb0702f8230134a97961a4ee70833fd5bd0dcc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/196641
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
2019-03-04 22:09:39 +00:00

47 lines
1.1 KiB
C++

/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef StatsLayer_DEFINED
#define StatsLayer_DEFINED
#include "SkColor.h"
#include "SkString.h"
#include "sk_app/Window.h"
class StatsLayer : public sk_app::Window::Layer {
public:
StatsLayer();
void resetMeasurements();
typedef int Timer;
Timer addTimer(const char* label, SkColor color, SkColor labelColor = 0);
void beginTiming(Timer);
void endTiming(Timer);
double getLastTime(Timer);
void onPaint(SkSurface*) override;
void setDisplayScale(float scale) { fDisplayScale = scale; }
private:
static const int kMeasurementCount = 1 << 6; // should be power of 2 for fast mod
struct TimerData {
double fTimes[kMeasurementCount];
SkString fLabel;
SkColor fColor;
SkColor fLabelColor;
};
SkTArray<TimerData> fTimers;
int fCurrentMeasurement;
double fCumulativeMeasurementTime;
int fCumulativeMeasurementCount;
float fDisplayScale;
};
#endif