1 /* 2 * Copyright 2017 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #ifndef StatsLayer_DEFINED 9 #define StatsLayer_DEFINED 10 11 #include "include/core/SkColor.h" 12 #include "include/core/SkString.h" 13 #include "include/private/base/SkTArray.h" 14 #include "tools/sk_app/Window.h" 15 16 class SkSurface; 17 18 class StatsLayer : public sk_app::Window::Layer { 19 public: 20 StatsLayer(); 21 void resetMeasurements(); 22 23 typedef int Timer; 24 25 Timer addTimer(const char* label, SkColor color, SkColor labelColor = 0); 26 void beginTiming(Timer); 27 void endTiming(Timer); 28 29 void enableGpuTimer(SkColor color); 30 void disableGpuTimer(); isGpuTimerEnabled()31 bool isGpuTimerEnabled() const { return fGpuTimerEnabled; } 32 std::function<void(uint64_t ns)> issueGpuTimer(); 33 34 void onPrePaint() override; 35 void onPaint(SkSurface*) override; 36 setDisplayScale(float scale)37 void setDisplayScale(float scale) { fDisplayScale = scale; } 38 39 private: 40 static const int kMeasurementCount = 1 << 6; // should be power of 2 for fast mod 41 struct TimerData { 42 double fTimes[kMeasurementCount]; 43 SkString fLabel; 44 SkColor fColor; 45 SkColor fLabelColor; 46 }; 47 skia_private::TArray<TimerData> fTimers; 48 double fTotalTimes[kMeasurementCount]; 49 50 TimerData fGpuTimer; 51 bool fGpuTimerEnabled = false; 52 53 int fCurrentMeasurement; 54 double fLastTotalBegin; 55 double fCumulativeMeasurementTime; 56 int fCumulativeMeasurementCount; 57 float fDisplayScale; 58 }; 59 60 #endif 61