ChartBench Class Reference

Inheritance diagram for ChartBench:

Public Member Functions
	ChartBench (bool aa)
Public Member Functions inherited from Benchmark
	Benchmark ()
const char *	getName ()
const char *	getUniqueName ()
SkISize	getSize ()
virtual bool	isSuitableFor (Backend backend)
virtual void	modifyGrContextOptions (GrContextOptions *)
virtual bool	shouldLoop () const
void	delayedSetup ()
void	perCanvasPreDraw (SkCanvas *)
void	perCanvasPostDraw (SkCanvas *)
void	preDraw (SkCanvas *)
void	postDraw (SkCanvas *)
void	draw (int loops, SkCanvas *)
virtual void	getGpuStats (SkCanvas *, skia_private::TArray< SkString > *keys, skia_private::TArray< double > *values)
virtual bool	getDMSAAStats (GrRecordingContext *)
int	getUnits () const
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Protected Member Functions
const char *	onGetName () override
void	onDraw (int loops, SkCanvas *canvas) override
Protected Member Functions inherited from Benchmark
void	setUnits (int units)
virtual void	setupPaint (SkPaint *paint)
virtual const char *	onGetName ()=0
virtual const char *	onGetUniqueName ()
virtual void	onDelayedSetup ()
virtual void	onPerCanvasPreDraw (SkCanvas *)
virtual void	onPerCanvasPostDraw (SkCanvas *)
virtual void	onPreDraw (SkCanvas *)
virtual void	onPostDraw (SkCanvas *)
virtual void	onDraw (int loops, SkCanvas *)=0
virtual SkISize	onGetSize ()

Additional Inherited Members
Public Types inherited from Benchmark
enum class	Backend {   kNonRendering , kRaster , kGanesh , kGraphite ,   kPDF , kHWUI }

Detailed Description

Definition at line 89 of file ChartBench.cpp.

Constructor & Destructor Documentation

ChartBench()

ChartBench::ChartBench ( bool  aa )

inline

Definition at line 91 of file ChartBench.cpp.

                        {
        fShift = 0;
        fAA = aa;
        fSize.fWidth = -1;
        fSize.fHeight = -1;
    }

Member Function Documentation

onDraw()

void ChartBench::onDraw ( int  loops, SkCanvas *  canvas  )

inlineoverrideprotectedvirtual

Implements Benchmark.

Definition at line 107 of file ChartBench.cpp.

                                                      {
        bool sizeChanged = false;
        if (canvas->getBaseLayerSize() != fSize) {
            fSize = canvas->getBaseLayerSize();
            sizeChanged = true;
        }
 
        SkScalar ySpread = SkIntToScalar(fSize.fHeight / 20);
 
        SkScalar height = SkIntToScalar(fSize.fHeight);
        if (sizeChanged) {
            int dataPointCount = std::max(fSize.fWidth / kPixelsPerTick + 1, 2);
 
            SkRandom random;
            for (int i = 0; i < kNumGraphs; ++i) {
                SkScalar y = (kNumGraphs - i) * (height - ySpread) / (kNumGraphs + 1);
                fData[i].reset();
                gen_data(y, ySpread, dataPointCount, &random, fData + i);
            }
        }
 
        SkRandom colorRand;
        SkColor colors[kNumGraphs];
        for (int i = 0; i < kNumGraphs; ++i) {
            colors[i] = colorRand.nextU() | 0xff000000;
        }
 
        for (int frame = 0; frame < loops; ++frame) {
            SkPath plotPath;
            SkPath fillPath;
 
            static const SkScalar kStrokeWidth = SkIntToScalar(2);
            SkPaint plotPaint;
            SkPaint fillPaint;
            plotPaint.setAntiAlias(fAA);
            plotPaint.setStyle(SkPaint::kStroke_Style);
            plotPaint.setStrokeWidth(kStrokeWidth);
            plotPaint.setStrokeCap(SkPaint::kRound_Cap);
            plotPaint.setStrokeJoin(SkPaint::kRound_Join);
            fillPaint.setAntiAlias(fAA);
            fillPaint.setStyle(SkPaint::kFill_Style);
 
            SkTDArray<SkScalar>* prevData = nullptr;
            for (int i = 0; i < kNumGraphs; ++i) {
                gen_paths(fData[i],
                          prevData,
                          height,
                          0,
                          SkIntToScalar(kPixelsPerTick),
                          fShift,
                          &plotPath,
                          &fillPath);
 
                // Make the fills partially transparent
                fillPaint.setColor((colors[i] & 0x00ffffff) | 0x80000000);
                canvas->drawPath(fillPath, fillPaint);
 
                plotPaint.setColor(colors[i]);
                canvas->drawPath(plotPath, plotPaint);
 
                prevData = fData + i;
            }
 
            fShift += kShiftPerFrame;
        }
    }

onGetName()

const char * ChartBench::onGetName ( )

inlineoverrideprotectedvirtual

Implements Benchmark.

Definition at line 99 of file ChartBench.cpp.

                                     {
        if (fAA) {
            return "chart_aa";
        } else {
            return "chart_bw";
        }
    }

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The documentation for this class was generated from the following file:

• third_party/skia/bench/ChartBench.cpp