skiagm::PerspShadersGM Class Reference

Inheritance diagram for skiagm::PerspShadersGM:

Public Member Functions
	PerspShadersGM (bool doAA)
Public Member Functions inherited from skiagm::GM
	GM (SkColor backgroundColor=SK_ColorWHITE)
virtual	~GM ()
void	setMode (Mode mode)
Mode	getMode () const
DrawResult	gpuSetup (SkCanvas *, SkString *errorMsg, GraphiteTestContext *=nullptr)
void	gpuTeardown ()
void	onceBeforeDraw ()
DrawResult	draw (SkCanvas *canvas)
DrawResult	draw (SkCanvas *, SkString *errorMsg)
void	drawBackground (SkCanvas *)
DrawResult	drawContent (SkCanvas *canvas)
DrawResult	drawContent (SkCanvas *, SkString *errorMsg)
virtual SkISize	getISize ()=0
virtual SkString	getName () const =0
virtual bool	runAsBench () const
SkScalar	width ()
SkScalar	height ()
SkColor	getBGColor () const
void	setBGColor (SkColor)
void	drawSizeBounds (SkCanvas *, SkColor)
bool	animate (double)
virtual bool	onChar (SkUnichar)
bool	getControls (SkMetaData *controls)
void	setControls (const SkMetaData &controls)
virtual void	modifyGrContextOptions (GrContextOptions *)
virtual void	modifyGraphiteContextOptions (skgpu::graphite::ContextOptions *) const
virtual bool	isBazelOnly () const
virtual std::map< std::string, std::string >	getGoldKeys () const

Protected Member Functions
SkString	getName () const override
SkISize	getISize () override
void	onOnceBeforeDraw () override
void	drawRow (SkCanvas *canvas, const SkSamplingOptions &sampling)
void	onDraw (SkCanvas *canvas) override
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual void	onOnceBeforeDraw ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
virtual void	onDraw (SkCanvas *)
virtual bool	onAnimate (double)
virtual bool	onGetControls (SkMetaData *)
virtual void	onSetControls (const SkMetaData &)
GraphiteTestContext *	graphiteTestContext () const

Additional Inherited Members
Public Types inherited from skiagm::GM
enum	Mode { kGM_Mode , kSample_Mode , kBench_Mode }
using	DrawResult = skiagm::DrawResult
using	GraphiteTestContext = skiatest::graphite::GraphiteTestContext
Static Public Attributes inherited from skiagm::GM
static constexpr char	kErrorMsg_DrawSkippedGpuOnly []

Detailed Description

Definition at line 42 of file perspshaders.cpp.

Constructor & Destructor Documentation

PerspShadersGM()

skiagm::PerspShadersGM::PerspShadersGM ( bool  doAA )

inline

Definition at line 44 of file perspshaders.cpp.

: fDoAA(doAA) { }

Member Function Documentation

drawRow()

void skiagm::PerspShadersGM::drawRow ( SkCanvas *  canvas, const SkSamplingOptions &  sampling  )

inlineprotected

Definition at line 91 of file perspshaders.cpp.

                                                                      {
        SkPaint filterPaint;
        filterPaint.setAntiAlias(fDoAA);
 
        SkPaint pathPaint;
        pathPaint.setShader(fBitmapImage->makeShader(sampling));
        pathPaint.setAntiAlias(fDoAA);
 
        SkPaint gradPaint1;
        gradPaint1.setShader(fLinearGrad1);
        gradPaint1.setAntiAlias(fDoAA);
        SkPaint gradPaint2;
        gradPaint2.setShader(fLinearGrad2);
        gradPaint2.setAntiAlias(fDoAA);
 
        SkRect r = SkRect::MakeWH(SkIntToScalar(kCellSize), SkIntToScalar(kCellSize));
 
        canvas->save();
 
        canvas->save();
        canvas->concat(fPerspMatrix);
        canvas->drawImageRect(fBitmapImage, r, sampling, &filterPaint);
        canvas->restore();
 
        canvas->translate(SkIntToScalar(kCellSize), 0);
        canvas->save();
        canvas->concat(fPerspMatrix);
        canvas->drawImage(fImage.get(), 0, 0, sampling, &filterPaint);
        canvas->restore();
 
        canvas->translate(SkIntToScalar(kCellSize), 0);
        canvas->save();
        canvas->concat(fPerspMatrix);
        canvas->drawRect(r, pathPaint);
        canvas->restore();
 
        canvas->translate(SkIntToScalar(kCellSize), 0);
        canvas->save();
        canvas->concat(fPerspMatrix);
        canvas->drawPath(fPath, pathPaint);
        canvas->restore();
 
        canvas->translate(SkIntToScalar(kCellSize), 0);
        canvas->save();
        canvas->concat(fPerspMatrix);
        canvas->drawRect(r, gradPaint1);
        canvas->restore();
 
        canvas->translate(SkIntToScalar(kCellSize), 0);
        canvas->save();
        canvas->concat(fPerspMatrix);
        canvas->drawPath(fPath, gradPaint2);
        canvas->restore();
 
        canvas->restore();
    }

getISize()

SkISize skiagm::PerspShadersGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 54 of file perspshaders.cpp.

                                {
        return SkISize::Make(kCellSize*kNumCols, kCellSize*kNumRows);
    }

getName()

SkString skiagm::PerspShadersGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 47 of file perspshaders.cpp.

                                      {
        SkString name;
        name.printf("persp_shaders_%s",
                     fDoAA ? "aa" : "bw");
        return name;
    }

onDraw()

void skiagm::PerspShadersGM::onDraw ( SkCanvas *  canvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 148 of file perspshaders.cpp.

                                           {
        if (!fImage || !fImage->isValid(canvas->recordingContext())) {
            fImage = make_image(canvas, kCellSize, kCellSize);
        }
 
        this->drawRow(canvas, SkSamplingOptions(SkFilterMode::kNearest));
        canvas->translate(0, SkIntToScalar(kCellSize));
        this->drawRow(canvas, SkSamplingOptions(SkFilterMode::kLinear));
        canvas->translate(0, SkIntToScalar(kCellSize));
        this->drawRow(canvas, SkSamplingOptions(SkFilterMode::kLinear,
                                                SkMipmapMode::kNearest));
        canvas->translate(0, SkIntToScalar(kCellSize));
        this->drawRow(canvas, SkSamplingOptions(SkCubicResampler::Mitchell()));
        canvas->translate(0, SkIntToScalar(kCellSize));
        this->drawRow(canvas, SkSamplingOptions::Aniso(16));
        canvas->translate(0, SkIntToScalar(kCellSize));
    }

onOnceBeforeDraw()

void skiagm::PerspShadersGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 58 of file perspshaders.cpp.

                                     {
        fBitmapImage = ToolUtils::create_checkerboard_image(
                kCellSize, kCellSize, SK_ColorBLUE, SK_ColorYELLOW, kCellSize / 10);
 
        SkPoint pts1[] = {
            { 0, 0 },
            { SkIntToScalar(kCellSize), SkIntToScalar(kCellSize) }
        };
        SkPoint pts2[] = {
            { 0, 0 },
            { 0, SkIntToScalar(kCellSize) }
        };
        constexpr SkColor colors[] = {
            SK_ColorRED, SK_ColorGREEN, SK_ColorRED, SK_ColorGREEN, SK_ColorRED
        };
        constexpr SkScalar pos[] = { 0, 0.25f, 0.5f, 0.75f, SK_Scalar1 };
 
        fLinearGrad1 = SkGradientShader::MakeLinear(pts1, colors, pos, std::size(colors),
                                                    SkTileMode::kClamp);
        fLinearGrad2 = SkGradientShader::MakeLinear(pts2, colors, pos, std::size(colors),
                                                    SkTileMode::kClamp);
 
        fPerspMatrix.reset();
        fPerspMatrix.setPerspY(SK_Scalar1 / 50);
 
        fPath.moveTo(0, 0);
        fPath.lineTo(0, SkIntToScalar(kCellSize));
        fPath.lineTo(kCellSize/2.0f, kCellSize/2.0f);
        fPath.lineTo(SkIntToScalar(kCellSize), SkIntToScalar(kCellSize));
        fPath.lineTo(SkIntToScalar(kCellSize), 0);
        fPath.close();
    }

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

• third_party/skia/gm/perspshaders.cpp