DFTextBlobPerspGM Class Reference

Inheritance diagram for DFTextBlobPerspGM:

Public Member Functions
	DFTextBlobPerspGM ()
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 *inputCanvas) 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

This GM tests reusing the same text blobs with distance fields rendering using various combinations of perspective and non-perspetive matrices, scissor clips, and different x,y params passed to the draw.

Definition at line 40 of file dftext_blob_persp.cpp.

Constructor & Destructor Documentation

DFTextBlobPerspGM()

DFTextBlobPerspGM::DFTextBlobPerspGM ( )

inline

Definition at line 42 of file dftext_blob_persp.cpp.

{ this->setBGColor(0xFFFFFFFF); }

Member Function Documentation

getISize()

SkISize DFTextBlobPerspGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 47 of file dftext_blob_persp.cpp.

{ return SkISize::Make(900, 350); }

getName()

SkString DFTextBlobPerspGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 45 of file dftext_blob_persp.cpp.

{ return SkString("dftext_blob_persp"); }

onDraw()

void DFTextBlobPerspGM::onDraw ( SkCanvas *  inputCanvas )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 63 of file dftext_blob_persp.cpp.

                                                {
        // set up offscreen rendering with distance field text
        auto ctx = inputCanvas->recordingContext();
        SkISize size = this->getISize();
        if (!inputCanvas->getBaseLayerSize().isEmpty()) {
            size = inputCanvas->getBaseLayerSize();
        }
        SkImageInfo info = SkImageInfo::MakeN32(size.width(), size.height(), kPremul_SkAlphaType,
                                                inputCanvas->imageInfo().refColorSpace());
        SkSurfaceProps inputProps;
        inputCanvas->getProps(&inputProps);
        SkSurfaceProps props(SkSurfaceProps::kUseDeviceIndependentFonts_Flag | inputProps.flags(),
                             inputProps.pixelGeometry());
        auto surface = SkSurfaces::RenderTarget(ctx, skgpu::Budgeted::kNo, info, 0, &props);
        SkCanvas* canvas = surface ? surface->getCanvas() : inputCanvas;
        // init our new canvas with the old canvas's matrix
        canvas->setMatrix(inputCanvas->getLocalToDeviceAs3x3());
        SkScalar x = 0, y = 0;
        SkScalar maxH = 0;
        for (auto twm : {TranslateWithMatrix::kNo, TranslateWithMatrix::kYes}) {
            for (auto pm : {PerspMode::kNone, PerspMode::kX, PerspMode::kY, PerspMode::kXY}) {
                for (auto& blob : fBlobs) {
                    for (bool clip : {false, true}) {
                        canvas->save();
                        SkScalar w = blob->bounds().width();
                        SkScalar h = blob->bounds().height();
                        if (clip) {
                            auto rect =
                                    SkRect::MakeXYWH(x + 5, y + 5, w * 3.f / 4.f, h * 3.f / 4.f);
                            canvas->clipRect(rect, false);
                        }
                        this->drawBlob(canvas, blob.get(), SK_ColorBLACK, x, y + h, pm, twm);
                        x += w + 20.f;
                        maxH = std::max(h, maxH);
                        canvas->restore();
                    }
                }
                x = 0;
                y += maxH + 20.f;
                maxH = 0;
            }
        }
        // render offscreen buffer
        if (surface) {
            SkAutoCanvasRestore acr(inputCanvas, true);
            // since we prepended this matrix already, we blit using identity
            inputCanvas->resetMatrix();
            inputCanvas->drawImage(surface->makeImageSnapshot().get(), 0, 0);
        }
    }

onOnceBeforeDraw()

void DFTextBlobPerspGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 49 of file dftext_blob_persp.cpp.

                                     {
        for (int i = 0; i < 3; ++i) {
            SkFont font = ToolUtils::DefaultPortableFont();
            font.setSize(32);
            font.setEdging(i == 0 ? SkFont::Edging::kAlias :
                           (i == 1 ? SkFont::Edging::kAntiAlias :
                            SkFont::Edging::kSubpixelAntiAlias));
            font.setSubpixel(true);
            SkTextBlobBuilder builder;
            ToolUtils::add_to_text_blob(&builder, "SkiaText", font, 0, 0);
            fBlobs.emplace_back(builder.make());
        }
    }

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

• third_party/skia/gm/dftext_blob_persp.cpp