skiagm::SamplerStressGM Class Reference

Inheritance diagram for skiagm::SamplerStressGM:

Public Member Functions
	SamplerStressGM ()
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	createTexture ()
void	createShader ()
void	createMaskFilter ()
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

Stress test the GPU samplers by rendering a textured glyph with a mask and an AA clip

Definition at line 34 of file samplerstress.cpp.

Constructor & Destructor Documentation

SamplerStressGM()

skiagm::SamplerStressGM::SamplerStressGM ( )

inline

Definition at line 36 of file samplerstress.cpp.

    : fTextureCreated(false)
    , fMaskFilter(nullptr) {
    }

Member Function Documentation

createMaskFilter()

void skiagm::SamplerStressGM::createMaskFilter ( )

inlineprotected

Definition at line 87 of file samplerstress.cpp.

                            {
        if (fMaskFilter) {
            return;
        }
 
        const SkScalar sigma = 1;
        fMaskFilter = SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, sigma);
    }

createShader()

void skiagm::SamplerStressGM::createShader ( )

inlineprotected

Definition at line 76 of file samplerstress.cpp.

                        {
        if (fShader) {
            return;
        }
 
        createTexture();
 
        fShader = fTexture.makeShader(SkTileMode::kRepeat, SkTileMode::kRepeat,
                                      SkSamplingOptions());
    }

createTexture()

void skiagm::SamplerStressGM::createTexture ( )

inlineprotected

Create a red & green stripes on black texture

Definition at line 49 of file samplerstress.cpp.

                         {
        if (fTextureCreated) {
            return;
        }
 
        constexpr int xSize = 16;
        constexpr int ySize = 16;
 
        fTexture.allocN32Pixels(xSize, ySize);
        SkPMColor* addr = fTexture.getAddr32(0, 0);
 
        for (int y = 0; y < ySize; ++y) {
            for (int x = 0; x < xSize; ++x) {
                addr[y*xSize+x] = SkPreMultiplyColor(SK_ColorBLACK);
 
                if ((y % 5) == 0) {
                    addr[y*xSize+x] = SkPreMultiplyColor(SK_ColorRED);
                }
                if ((x % 7) == 0) {
                    addr[y*xSize+x] = SkPreMultiplyColor(SK_ColorGREEN);
                }
            }
        }
 
        fTextureCreated = true;
    }

getISize()

SkISize skiagm::SamplerStressGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 44 of file samplerstress.cpp.

{ return SkISize::Make(640, 480); }

getName()

SkString skiagm::SamplerStressGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 42 of file samplerstress.cpp.

{ return SkString("gpusamplerstress"); }

onDraw()

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

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 96 of file samplerstress.cpp.

                                           {
        createShader();
        createMaskFilter();
 
        canvas->save();
 
        // draw a letter "M" with a green & red striped texture and a
        // stipple mask with a round rect soft clip
        SkPaint paint;
        paint.setAntiAlias(true);
        paint.setShader(fShader);
        paint.setMaskFilter(fMaskFilter);
        SkFont font(ToolUtils::DefaultPortableTypeface(), 72);
 
        SkRect temp;
        temp.setLTRB(115, 75, 144, 110);
 
        SkPath path;
        path.addRoundRect(temp, SkIntToScalar(5), SkIntToScalar(5));
 
        canvas->clipPath(path, true); // AA is on
 
        canvas->drawString("M", 100.0f, 100.0f, font, paint);
 
        canvas->restore();
 
        // Now draw stroked versions of the "M" and the round rect so we can
        // see what is going on
        SkPaint paint2;
        paint2.setColor(SK_ColorBLACK);
        paint2.setAntiAlias(true);
        paint2.setStyle(SkPaint::kStroke_Style);
        paint2.setStrokeWidth(1);
        canvas->drawString("M", 100.0f, 100.0f, font, paint2);
 
        paint2.setColor(SK_ColorGRAY);
 
        canvas->drawPath(path, paint2);
    }

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

• third_party/skia/gm/samplerstress.cpp