Inheritance diagram for skiagm::PictureMesh:

Public Member Functions
	PictureMesh ()=default

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 Types
using	Attribute = SkMeshSpecification::Attribute

using	Varying = SkMeshSpecification::Varying

Protected Member Functions
SkISize	getISize () override

void	onOnceBeforeDraw () override

SkString	getName () const override

DrawResult	onDraw (SkCanvas canvas, SkString error) 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 1037 of file mesh.cpp.

Member Typedef Documentation

◆ Attribute

using skiagm::PictureMesh::Attribute = SkMeshSpecification::Attribute

protected

Definition at line 1042 of file mesh.cpp.

◆ Varying

using skiagm::PictureMesh::Varying = SkMeshSpecification::Varying

protected

Definition at line 1043 of file mesh.cpp.

Constructor & Destructor Documentation

◆ PictureMesh()

skiagm::PictureMesh::PictureMesh ( )

default

Member Function Documentation

◆ getISize()

SkISize skiagm::PictureMesh::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 1045 of file mesh.cpp.

1045{ return {390, 90}; }

◆ getName()

SkString skiagm::PictureMesh::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 1110 of file mesh.cpp.

1110{ return SkString("picture_mesh"); }

SkString

Definition: SkString.h:118

◆ onDraw()

DrawResult skiagm::PictureMesh::onDraw	(	SkCanvas *	canvas,
		SkString *	error
	)

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 1112 of file mesh.cpp.

                                                                  {
        SkPaint paint;
        paint.setShader(fShader);
 
        auto dc = GrAsDirectContext(canvas->recordingContext());
        for (bool picture : {false, true}) {
            canvas->save();
            for (bool gpu : {false, true}) {
                auto vb = gpu ? SkMeshes::CopyVertexBuffer(dc, fVB) : fVB;
                auto ib = gpu ? SkMeshes::CopyIndexBuffer (dc, fIB) : fIB;
 
                float offset[2] = {8, 8};
                for (size_t i = 0; i < 4; ++i) {
                    auto uniforms = SkData::MakeWithCopy(&offset, sizeof(offset));
                    SkMesh::Result r;
                    switch (i) {
                        case 0:
                            r = SkMesh::Make(fSpec,
                                             SkMesh::Mode::kTriangles,
                                             fVB,
                                             6,
                                             1 * sizeof(Vertex),
                                             std::move(uniforms),
                                             /*children=*/{},
                                             kRect);
                            break;
                        case 1:
                            r = SkMesh::Make(fSpec,
                                             SkMesh::Mode::kTriangleStrip,
                                             fVB,
                                             4,
                                             1 * sizeof(Vertex),
                                             std::move(uniforms),
                                             /*children=*/{},
                                             kRect);
                            break;
                        case 2:
                            r = SkMesh::MakeIndexed(fSpec,
                                                    SkMesh::Mode::kTriangles,
                                                    fVB,
                                                    std::size(kQuad),
                                                    0,
                                                    fIB,
                                                    6,
                                                    2 * (sizeof(uint16_t)),
                                                    std::move(uniforms),
                                                    /*children=*/{},
                                                    kRect);
                            break;
                        case 3:
                            r = SkMesh::MakeIndexed(fSpec,
                                                    SkMesh::Mode::kTriangleStrip,
                                                    fVB,
                                                    std::size(kQuad),
                                                    0,
                                                    fIB,
                                                    6,
                                                    2 * sizeof(uint16_t),
                                                    std::move(uniforms),
                                                    /*children=*/{},
                                                    kRect);
                            break;
                    }
 
                    if (!r.mesh.isValid()) {
                        *error = r.error;
                        return DrawResult::kFail;
                    }
 
                    auto draw = [&](SkCanvas* c) {
                        c->drawMesh(r.mesh, SkBlender::Mode(SkBlendMode::kDifference), paint);
                    };
                    if (picture) {
                        SkPictureRecorder recorder;
                        draw(recorder.beginRecording(SkRect::Make(this->getISize()),
                                                     /*bbhFactory=*/nullptr));
                        canvas->drawPicture(recorder.finishRecordingAsPicture());
                    } else {
                        draw(canvas);
                    }
                    offset[i%2] *= -1;
                    canvas->translate(kRect.width() + 10, 0);
                }
            }
            canvas->restore();
            canvas->translate(0, kRect.height() + 10);
        }
        return DrawResult::kOk;
    }

◆ onOnceBeforeDraw()

void skiagm::PictureMesh::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 1047 of file mesh.cpp.

                                     {
        static const Attribute kAttributes[]{
                {Attribute::Type::kFloat2, 0, SkString{"pos"}},
        };
        static const Varying kVaryings[]{
                {Varying::Type::kFloat2, SkString{"coords"}},
        };
        static constexpr char kVS[] = R"(
                Varyings main(in const Attributes attributes) {
                    Varyings varyings;
                    varyings.position = attributes.pos;
                    return varyings;
                }
        )";
        static const SkString kFS = SkStringPrintf(R"(
                uniform float2 offset;
                float2 main(const Varyings varyings, out float4 color) {
                    float2 tl = float2(%f, %f);
                    float2 wh = float2(%f, %f);
                    float2 c = tl + wh/2;
                    float  r = length(wh)/4;
                    color.rba = float3(1);
                    color.g = min(1, length(varyings.position - c + offset) / r);
                    return varyings.position;
                }
        )", kRect.x(), kRect.y(), kRect.width(), kRect.height());
        auto [spec, error] =
                SkMeshSpecification::Make(kAttributes,
                                          sizeof(Vertex),
                                          kVaryings,
                                          SkString(kVS),
                                          kFS,
                                          SkColorSpace::MakeSRGB()->makeColorSpin(),
                                          kPremul_SkAlphaType);
        if (!spec) {
            SkDebugf("%s\n", error.c_str());
        }
        fSpec = std::move(spec);
 
        fVB = SkMeshes::MakeVertexBuffer(kQuad, sizeof(kQuad));
        fIB = SkMeshes::MakeIndexBuffer(kIndices, sizeof(kIndices));
 
        SkRandom random;
        SkColor4f colors[6];
        for (size_t i = 0; i < std::size(colors) - 1; ++i) {
            colors[i] = {random.nextF(), random.nextF(), random.nextF(), 1.f};
        }
        colors[std::size(colors) - 1] = colors[0];
        SkPaint paint;
        SkGradientShader::Interpolation interpolation;
        interpolation.fColorSpace = SkGradientShader::Interpolation::ColorSpace::kHSL;
        fShader = SkGradientShader::MakeSweep(kRect.centerX(), kRect.centerY(),
                                              colors,
                                              SkColorSpace::MakeSRGB(),
                                              nullptr,
                                              std::size(colors),
                                              SkTileMode::kRepeat,
                                              0,
                                              360.f,
                                              interpolation,
                                              /*localMatrix=*/nullptr);
    }

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

third_party/skia/gm/mesh.cpp

Public Member Functions

Protected Types

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Typedef Documentation

◆ Attribute

◆ Varying

Constructor & Destructor Documentation

◆ PictureMesh()

Member Function Documentation

◆ getISize()

◆ getName()

◆ onDraw()

◆ onOnceBeforeDraw()