ImageMakeWithFilterGM Class Reference

Inheritance diagram for ImageMakeWithFilterGM:

Public Member Functions
	ImageMakeWithFilterGM (Strategy strategy, bool filterWithCropRect=false)
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
DrawResult	onDraw (SkCanvas *canvas, SkString *errorMsg) override
Protected Member Functions inherited from skiagm::GM
virtual DrawResult	onGpuSetup (SkCanvas *, SkString *, GraphiteTestContext *)
virtual void	onGpuTeardown ()
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 191 of file imagemakewithfilter.cpp.

Constructor & Destructor Documentation

ImageMakeWithFilterGM()

ImageMakeWithFilterGM::ImageMakeWithFilterGM ( Strategy  strategy, bool  filterWithCropRect = false  )

inline

Definition at line 193 of file imagemakewithfilter.cpp.

            : fStrategy(strategy)
            , fFilterWithCropRect(filterWithCropRect)
            , fMainImage(nullptr)
            , fAuxImage(nullptr) {}

Member Function Documentation

getISize()

SkISize ImageMakeWithFilterGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 212 of file imagemakewithfilter.cpp.

{ return SkISize::Make(1840, 860); }

getName()

SkString ImageMakeWithFilterGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 200 of file imagemakewithfilter.cpp.

                                      {
        SkString name = SkString("imagemakewithfilter");
 
        if (fFilterWithCropRect) {
            name.append("_crop");
        }
        if (fStrategy == Strategy::kSaveLayer) {
            name.append("_ref");
        }
        return name;
    }

onDraw()

DrawResult ImageMakeWithFilterGM::onDraw ( SkCanvas *  canvas, SkString *  errorMsg  )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 230 of file imagemakewithfilter.cpp.

                                                                     {
        FilterFactory filters[] = {
            color_filter_factory,
            blur_filter_factory,
            drop_shadow_factory,
            offset_factory,
            dilate_factory,
            erode_factory,
            displacement_factory,
            arithmetic_factory,
            blend_factory,
            convolution_factory,
            matrix_factory,
            lighting_factory,
            tile_factory
        };
        const char* filterNames[] = {
            "Color",
            "Blur",
            "Drop Shadow",
            "Offset",
            "Dilate",
            "Erode",
            "Displacement",
            "Arithmetic",
            "Blend",
            "Convolution",
            "Matrix Xform",
            "Lighting",
            "Tile"
        };
        static_assert(std::size(filters) == std::size(filterNames), "filter name length");
 
        SkIRect clipBounds[] {
            { -20, -20, 100, 100 },
            {   0,   0,  75,  75 },
            {  20,  20, 100, 100 },
            { -20, -20,  50,  50 },
            {  20,  20,  50,  50 },
            {  30,  30,  75,  75 }
        };
 
        auto rContext = canvas->recordingContext();
        // In a DDL context, we can't use the GPU code paths and we will drop the work – skip.
        auto dContext = GrAsDirectContext(rContext);
        if (rContext) {
            if (!dContext) {
                *errorMsg = "Requires a direct context.";
                return DrawResult::kSkip;
            }
            if (dContext->abandoned()) {
                *errorMsg = "Direct context abandoned.";
                return DrawResult::kSkip;
            }
        }
 
        // These need to be GPU-backed when on the GPU to ensure that the image filters use the GPU
        // code paths (otherwise they may choose to do CPU filtering then upload)
        sk_sp<SkImage> mainImage = ToolUtils::MakeTextureImage(canvas, fMainImage);
        sk_sp<SkImage> auxImage = ToolUtils::MakeTextureImage(canvas, fAuxImage);
        if (!mainImage || !auxImage) {
            return DrawResult::kFail;
        }
        SkASSERT(mainImage && (mainImage->isTextureBacked() || !dContext));
        SkASSERT(auxImage && (auxImage->isTextureBacked() || !dContext));
 
        SkScalar MARGIN = SkIntToScalar(40);
        SkScalar DX = mainImage->width() + MARGIN;
        SkScalar DY = auxImage->height() + MARGIN;
 
        // Header hinting at what the filters do
        SkPaint textPaint;
        textPaint.setAntiAlias(true);
        SkFont font = ToolUtils::DefaultPortableFont();
        font.setSize(12);
        for (size_t i = 0; i < std::size(filterNames); ++i) {
            canvas->drawString(filterNames[i], DX * i + MARGIN, 15, font, textPaint);
        }
 
        canvas->translate(MARGIN, MARGIN);
 
        for (auto clipBound : clipBounds) {
            canvas->save();
            for (size_t i = 0; i < std::size(filters); ++i) {
                SkIRect subset = SkIRect::MakeXYWH(25, 25, 50, 50);
                SkIRect outSubset;
 
                // Draw the original image faintly so that it aids in checking alignment of the
                // filtered result.
                SkPaint alpha;
                alpha.setAlphaf(0.3f);
                canvas->drawImage(mainImage, 0, 0, SkSamplingOptions(), &alpha);
 
                this->drawImageWithFilter(canvas, mainImage, auxImage, filters[i], clipBound,
                                          subset, &outSubset);
 
                // Draw outlines to highlight what was subset, what was cropped, and what was output
                // (no output subset is displayed for kSaveLayer since that information isn't avail)
                SkIRect* outSubsetBounds = nullptr;
                if (fStrategy != Strategy::kSaveLayer) {
                    outSubsetBounds = &outSubset;
                }
                show_bounds(canvas, &clipBound, &subset, outSubsetBounds);
 
                canvas->translate(DX, 0);
            }
            canvas->restore();
            canvas->translate(0, DY);
        }
        return DrawResult::kOk;
    }

onOnceBeforeDraw()

void ImageMakeWithFilterGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 214 of file imagemakewithfilter.cpp.

                                     {
        SkImageInfo info = SkImageInfo::MakeN32(100, 100, kUnpremul_SkAlphaType);
        auto surface = SkSurfaces::Raster(info, nullptr);
 
        sk_sp<SkImage> colorImage = ToolUtils::GetResourceAsImage("images/mandrill_128.png");
        // Resize to 100x100
        surface->getCanvas()->drawImageRect(
                colorImage, SkRect::MakeWH(colorImage->width(), colorImage->height()),
                SkRect::MakeWH(info.width(), info.height()), SkSamplingOptions(), nullptr,
                                            SkCanvas::kStrict_SrcRectConstraint);
        fMainImage = surface->makeImageSnapshot();
 
        ToolUtils::draw_checkerboard(surface->getCanvas());
        fAuxImage = surface->makeImageSnapshot();
    }

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

• third_party/skia/gm/imagemakewithfilter.cpp