skiagm::XfermodeImageFilterGM Class Reference

Inheritance diagram for skiagm::XfermodeImageFilterGM:

Public Member Functions
	XfermodeImageFilterGM ()
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 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	onDraw (SkCanvas *canvas) override
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
virtual DrawResult	onDraw (SkCanvas *, SkString *errorMsg)
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 34 of file xfermodeimagefilter.cpp.

Constructor & Destructor Documentation

XfermodeImageFilterGM()

skiagm::XfermodeImageFilterGM::XfermodeImageFilterGM ( )

inline

Definition at line 36 of file xfermodeimagefilter.cpp.

                           {
        this->setBGColor(0xFF000000);
    }

Member Function Documentation

getISize()

SkISize skiagm::XfermodeImageFilterGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 43 of file xfermodeimagefilter.cpp.

{ return SkISize::Make(WIDTH, HEIGHT); }

getName()

SkString skiagm::XfermodeImageFilterGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 41 of file xfermodeimagefilter.cpp.

{ return SkString("xfermodeimagefilter"); }

onDraw()

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

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 51 of file xfermodeimagefilter.cpp.

                                           {
        canvas->clear(SK_ColorBLACK);
        SkPaint paint;
 
        const SkBlendMode gModes[] = {
            SkBlendMode::kClear,
            SkBlendMode::kSrc,
            SkBlendMode::kDst,
            SkBlendMode::kSrcOver,
            SkBlendMode::kDstOver,
            SkBlendMode::kSrcIn,
            SkBlendMode::kDstIn,
            SkBlendMode::kSrcOut,
            SkBlendMode::kDstOut,
            SkBlendMode::kSrcATop,
            SkBlendMode::kDstATop,
            SkBlendMode::kXor,
 
            SkBlendMode::kPlus,
            SkBlendMode::kModulate,
            SkBlendMode::kScreen,
            SkBlendMode::kOverlay,
            SkBlendMode::kDarken,
            SkBlendMode::kLighten,
            SkBlendMode::kColorDodge,
            SkBlendMode::kColorBurn,
            SkBlendMode::kHardLight,
            SkBlendMode::kSoftLight,
            SkBlendMode::kDifference,
            SkBlendMode::kExclusion,
            SkBlendMode::kMultiply,
            SkBlendMode::kHue,
            SkBlendMode::kSaturation,
            SkBlendMode::kColor,
            SkBlendMode::kLuminosity,
        };
 
        int x = 0, y = 0;
        sk_sp<SkImageFilter> background(SkImageFilters::Image(fCheckerboard,
                                                              SkFilterMode::kNearest));
        for (size_t i = 0; i < std::size(gModes); i++) {
            paint.setImageFilter(SkImageFilters::Blend(gModes[i], background));
            DrawClippedBitmap(canvas, fBitmap, paint, x, y);
            x += fBitmap.width() + MARGIN;
            if (x + fBitmap.width() > WIDTH) {
                x = 0;
                y += fBitmap.height() + MARGIN;
            }
        }
        // Test arithmetic mode as image filter
        paint.setImageFilter(SkImageFilters::Arithmetic(0, 1, 1, 0, true, background, nullptr));
        DrawClippedBitmap(canvas, fBitmap, paint, x, y);
        x += fBitmap.width() + MARGIN;
        if (x + fBitmap.width() > WIDTH) {
            x = 0;
            y += fBitmap.height() + MARGIN;
        }
        // Test nullptr mode
        paint.setImageFilter(SkImageFilters::Blend(SkBlendMode::kSrcOver, background));
        DrawClippedBitmap(canvas, fBitmap, paint, x, y);
        x += fBitmap.width() + MARGIN;
        if (x + fBitmap.width() > WIDTH) {
            x = 0;
            y += fBitmap.height() + MARGIN;
        }
        SkRect clipRect = SkRect::MakeWH(SkIntToScalar(fBitmap.width() + 4),
                                         SkIntToScalar(fBitmap.height() + 4));
        // Test offsets on SrcMode (uses fixed-function blend)
        sk_sp<SkImage> bitmapImage(fBitmap.asImage());
        sk_sp<SkImageFilter> foreground(SkImageFilters::Image(std::move(bitmapImage),
                                                              SkFilterMode::kNearest));
        sk_sp<SkImageFilter> offsetForeground(SkImageFilters::Offset(4, -4, foreground));
        sk_sp<SkImageFilter> offsetBackground(SkImageFilters::Offset(4, 4, background));
        paint.setImageFilter(SkImageFilters::Blend(
                SkBlendMode::kSrcOver, offsetBackground, offsetForeground));
        DrawClippedPaint(canvas, clipRect, paint, x, y);
        x += fBitmap.width() + MARGIN;
        if (x + fBitmap.width() > WIDTH) {
            x = 0;
            y += fBitmap.height() + MARGIN;
        }
        // Test offsets on Darken (uses shader blend)
        paint.setImageFilter(SkImageFilters::Blend(
                SkBlendMode::kDarken, offsetBackground, offsetForeground));
        DrawClippedPaint(canvas, clipRect, paint, x, y);
        x += fBitmap.width() + MARGIN;
        if (x + fBitmap.width() > WIDTH) {
            x = 0;
            y += fBitmap.height() + MARGIN;
        }
        // Test cropping
        constexpr size_t nbSamples = 3;
        const SkBlendMode sampledModes[nbSamples] = {
            SkBlendMode::kOverlay, SkBlendMode::kSrcOver, SkBlendMode::kPlus
        };
        int offsets[nbSamples][4] = {{ 10,  10, -16, -16},
                                     { 10,  10,  10,  10},
                                     {-10, -10,  -6,  -6}};
        for (size_t i = 0; i < nbSamples; ++i) {
            SkIRect cropRect = SkIRect::MakeXYWH(offsets[i][0],
                                                 offsets[i][1],
                                                 fBitmap.width()  + offsets[i][2],
                                                 fBitmap.height() + offsets[i][3]);
            paint.setImageFilter(SkImageFilters::Blend(sampledModes[i], offsetBackground,
                                                       offsetForeground, &cropRect));
            DrawClippedPaint(canvas, clipRect, paint, x, y);
            x += fBitmap.width() + MARGIN;
            if (x + fBitmap.width() > WIDTH) {
                x = 0;
                y += fBitmap.height() + MARGIN;
            }
        }
        // Test small bg, large fg with Screen (uses shader blend)
        SkIRect cropRect = SkIRect::MakeXYWH(10, 10, 60, 60);
        sk_sp<SkImageFilter> cropped(SkImageFilters::Offset(0, 0, foreground, &cropRect));
        paint.setImageFilter(SkImageFilters::Blend(SkBlendMode::kScreen, cropped, background));
        DrawClippedPaint(canvas, clipRect, paint, x, y);
        x += fBitmap.width() + MARGIN;
        if (x + fBitmap.width() > WIDTH) {
            x = 0;
            y += fBitmap.height() + MARGIN;
        }
        // Test small fg, large bg with Screen (uses shader blend)
        paint.setImageFilter(SkImageFilters::Blend(SkBlendMode::kScreen, background, cropped));
        DrawClippedPaint(canvas, clipRect, paint, x, y);
        x += fBitmap.width() + MARGIN;
        if (x + fBitmap.width() > WIDTH) {
            x = 0;
            y += fBitmap.height() + MARGIN;
        }
        // Test small fg, large bg with SrcIn with a crop that forces it to full size.
        // This tests that SkXfermodeImageFilter correctly applies the compositing mode to
        // the region outside the foreground.
        SkIRect cropRectFull = SkIRect::MakeXYWH(0, 0, 80, 80);
        paint.setImageFilter(SkImageFilters::Blend(SkBlendMode::kSrcIn, background, cropped,
                                                   &cropRectFull));
        DrawClippedPaint(canvas, clipRect, paint, x, y);
        x += fBitmap.width() + MARGIN;
        if (x + fBitmap.width() > WIDTH) {
            x = 0;
            y += fBitmap.height() + MARGIN;
        }
    }

onOnceBeforeDraw()

void skiagm::XfermodeImageFilterGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 45 of file xfermodeimagefilter.cpp.

                                     {
        fBitmap = ToolUtils::CreateStringBitmap(80, 80, 0xD000D000, 15, 65, 96, "e");
 
        fCheckerboard = ToolUtils::create_checkerboard_image(80, 80, 0xFFA0A0A0, 0xFF404040, 8);
    }

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

• third_party/skia/gm/xfermodeimagefilter.cpp