93 lines
3.1 KiB
C
93 lines
3.1 KiB
C
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/*
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* Copyright 2015 Google Inc.
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*
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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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*
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*/
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#ifndef VisualInteractiveModule_DEFINED
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#define VisualInteractiveModule_DEFINED
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#include "VisualModule.h"
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#include "ResultsWriter.h"
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#include "SkPicture.h"
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#include "Timer.h"
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#include "VisualBench.h"
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#include "VisualBenchmarkStream.h"
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class SkCanvas;
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/*
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* This module for VisualBench is designed to display stats data dynamically
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*/
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class VisualInteractiveModule : public VisualModule {
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public:
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// TODO get rid of backpointer
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VisualInteractiveModule(VisualBench* owner);
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void draw(SkCanvas* canvas) override;
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bool onHandleChar(SkUnichar unichar) override;
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private:
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/*
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* The heart of visual bench is an event driven timing loop.
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* kPreWarmLoopsPerCanvasPreDraw_State: Before we begin timing, Benchmarks have a hook to
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* access the canvas. Then we prewarm before the autotune
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* loops step.
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* kPreWarmLoops_State: We prewarm the gpu before auto tuning to enter a steady
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* work state
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* kTuneLoops_State: Then we tune the loops of the benchmark to ensure we
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* are doing a measurable amount of work
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* kPreTiming_State: Because reset the context after tuning loops to ensure
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* coherent state, we need to restart before timing
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* kTiming_State: Finally we time the benchmark. In this case we
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* continue running and displaying benchmark data
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* until we quit or switch to another benchmark
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* kAdvance_State: Advance to the next benchmark in the stream
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*/
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enum State {
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kPreWarmLoopsPerCanvasPreDraw_State,
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kPreWarmLoops_State,
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kTuneLoops_State,
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kPreTiming_State,
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kTiming_State,
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kAdvance_State,
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};
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void setTitle();
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bool setupBackend();
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void setupRenderTarget();
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void drawStats(SkCanvas*);
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bool advanceRecordIfNecessary(SkCanvas*);
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inline void renderFrame(SkCanvas*);
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inline void nextState(State);
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void perCanvasPreDraw(SkCanvas*, State);
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void preWarm(State nextState);
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void scaleLoops(double elapsedMs);
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inline void tuneLoops(SkCanvas*);
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inline void timing(SkCanvas*);
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inline double elapsed();
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void resetTimingState();
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void postDraw(SkCanvas*);
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void recordMeasurement();
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static const int kMeasurementCount = 64; // should be power of 2 for fast mod
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double fMeasurements[kMeasurementCount];
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int fCurrentMeasurement;
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int fCurrentFrame;
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int fLoops;
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WallTimer fTimer;
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State fState;
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SkAutoTDelete<VisualBenchmarkStream> fBenchmarkStream;
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SkAutoTUnref<Benchmark> fBenchmark;
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// support framework
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SkAutoTUnref<VisualBench> fOwner;
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typedef VisualModule INHERITED;
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};
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#endif
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