skiagm::MeshColorSpaceGM Class Reference

Inheritance diagram for skiagm::MeshColorSpaceGM:

Public Member Functions
	MeshColorSpaceGM ()
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 345 of file mesh.cpp.

Member Typedef Documentation

Attribute

using skiagm::MeshColorSpaceGM::Attribute = SkMeshSpecification::Attribute

protected

Definition at line 350 of file mesh.cpp.

Varying

using skiagm::MeshColorSpaceGM::Varying = SkMeshSpecification::Varying

protected

Definition at line 351 of file mesh.cpp.

Constructor & Destructor Documentation

MeshColorSpaceGM()

skiagm::MeshColorSpaceGM::MeshColorSpaceGM ( )

inline

Definition at line 347 of file mesh.cpp.

{}

Member Function Documentation

getISize()

SkISize skiagm::MeshColorSpaceGM::getISize ( )

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 353 of file mesh.cpp.

{ return {468, 258}; }

getName()

SkString skiagm::MeshColorSpaceGM::getName ( ) const

inlineoverrideprotectedvirtual

Implements skiagm::GM.

Definition at line 416 of file mesh.cpp.

{ return SkString("custommesh_cs"); }

onDraw()

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

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 418 of file mesh.cpp.

                                                                  {
        // Force an intermediate surface if the canvas is in "legacy" mode
        SkCanvas* c = canvas;
        sk_sp<SkSurface> surface;
        if (!c->imageInfo().colorSpace()) {
            SkImageInfo info = canvas->imageInfo().makeColorSpace(SkColorSpace::MakeSRGB());
            surface = canvas->makeSurface(info);
            if (!surface) {
                // This GM won't work on configs that use a recording canvas.
                return DrawResult::kSkip;
            }
            c = surface->getCanvas();
            c->clear(SK_ColorWHITE);
        }
        for (bool useShader : {false, true})
        for (bool unpremul  : {false, true}) {
            c->save();
            for (bool spin : {false, true}) {
                auto result = SkMesh::Make(fSpecs[SpecIndex(unpremul, spin)],
                                           SkMesh::Mode::kTriangleStrip,
                                           fVB,
                                           /*vertexCount=*/4,
                                           /*vertexOffset=*/0,
                                           /*uniforms=*/nullptr,
                                           /*children=*/{},
                                           kRect);
                if (!result.mesh.isValid()) {
                    SkDebugf("Mesh creation failed: %s\n", result.error.c_str());
                    return DrawResult::kFail;
                }
 
                SkPaint paint;
                paint.setShader(useShader ? fShader : nullptr);
                SkBlendMode mode = useShader ? SkBlendMode::kModulate : SkBlendMode::kDst;
                canvas->drawMesh(result.mesh, SkBlender::Mode(mode), paint);
 
                c->translate(0, kRect.height() + 10);
            }
            c->restore();
            c->translate(kRect.width() + 10, 0);
            c->save();
        }
        if (surface) {
            surface->draw(canvas, 0, 0);
        }
        return DrawResult::kOk;
    }

onOnceBeforeDraw()

void skiagm::MeshColorSpaceGM::onOnceBeforeDraw ( )

inlineoverrideprotectedvirtual

Reimplemented from skiagm::GM.

Definition at line 355 of file mesh.cpp.

                                     {
        static const Attribute kAttributes[]{
                {Attribute::Type::kFloat2, 0, SkString{"pos"}  },
                {Attribute::Type::kFloat4, 8, SkString{"color"}},
        };
        static const Varying kVaryings[]{
                {Varying::Type::kHalf4,  SkString{"color"}},
        };
        static constexpr char kPremulVS[] = R"(
                Varyings main(const in Attributes attributes) {
                    Varyings varyings;
                    varyings.color = half4(attributes.color.a*attributes.color.rgb,
                                           attributes.color.a);
                    varyings.position = attributes.pos;
                    return varyings;
                }
        )";
        static constexpr char kUnpremulVS[] = R"(
                Varyings main(const in Attributes attributes) {
                    Varyings varyings;
                    varyings.color    = attributes.color;
                    varyings.position = attributes.pos;
                    return varyings;
                }
        )";
        static constexpr char kFS[] = R"(
                float2 main(in const Varyings varyings, out half4 color) {
                    color = varyings.color;
                    return varyings.position;
                }
        )";
        for (bool unpremul : {false, true}) {
            auto at = unpremul ? kUnpremul_SkAlphaType : kPremul_SkAlphaType;
            auto vs = unpremul ? kUnpremulVS : kPremulVS;
            for (bool spin : {false, true}) {
                auto cs = SkColorSpace::MakeSRGB();
                if (spin) {
                    cs = cs->makeColorSpin();
                }
 
                auto [spec, error] = SkMeshSpecification::Make(
                        kAttributes,
                        sizeof(Vertex),
                        kVaryings,
                        SkString(vs),
                        SkString(kFS),
                        std::move(cs),
                        at);
                if (!spec) {
                    SkDebugf("%s\n", error.c_str());
                }
                fSpecs[SpecIndex(unpremul, spin)] = std::move(spec);
            }
        }
        SkPoint pts[]    = {{kRect.fLeft, 0}, {kRect.centerX(), 0}};
        SkColor colors[] = {SK_ColorWHITE,    SK_ColorTRANSPARENT};
        fShader = SkGradientShader::MakeLinear(pts, colors, nullptr, 2, SkTileMode::kMirror);
 
        fVB = SkMeshes::MakeVertexBuffer(kQuad, sizeof(kQuad));
    }

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

• third_party/skia/gm/mesh.cpp