CircularRRectOp Class Reference

Inheritance diagram for CircularRRectOp:

Public Member Functions
	CircularRRectOp (GrProcessorSet *processorSet, const SkPMColor4f &color, const SkMatrix &viewMatrix, const SkRect &devRect, float devRadius, float devStrokeWidth, bool strokeOnly)
const char *	name () const override
void	visitProxies (const GrVisitProxyFunc &func) const override
GrProcessorSet::Analysis	finalize (const GrCaps &caps, const GrAppliedClip *clip, GrClampType clampType) override
FixedFunctionFlags	fixedFunctionFlags () const override
Public Member Functions inherited from GrDrawOp
	GrDrawOp (uint32_t classID)
virtual bool	usesMSAA () const
virtual ClipResult	clipToShape (skgpu::ganesh::SurfaceDrawContext *, SkClipOp, const SkMatrix &, const GrShape &, GrAA)
virtual bool	usesStencil () const
Public Member Functions inherited from GrOp
virtual	~GrOp ()=default
CombineResult	combineIfPossible (GrOp *that, SkArenaAlloc *alloc, const GrCaps &caps)
const SkRect &	bounds () const
void	setClippedBounds (const SkRect &clippedBounds)
bool	hasAABloat () const
bool	hasZeroArea () const
void	operator delete (void *p)
template<typename T >
const T &	cast () const
template<typename T >
T *	cast ()
uint32_t	classID () const
uint32_t	uniqueID () const
void	prePrepare (GrRecordingContext *context, const GrSurfaceProxyView &dstView, GrAppliedClip *clip, const GrDstProxyView &dstProxyView, GrXferBarrierFlags renderPassXferBarriers, GrLoadOp colorLoadOp)
void	prepare (GrOpFlushState *state)
void	execute (GrOpFlushState *state, const SkRect &chainBounds)
void	chainConcat (GrOp::Owner)
bool	isChainHead () const
bool	isChainTail () const
GrOp *	nextInChain () const
GrOp *	prevInChain () const
GrOp::Owner	cutChain ()
void	setBounds (const SkRect &newBounds, HasAABloat aabloat, IsHairline zeroArea)
void	setTransformedBounds (const SkRect &srcBounds, const SkMatrix &m, HasAABloat aabloat, IsHairline zeroArea)
void	makeFullScreen (GrSurfaceProxy *proxy)

Static Public Member Functions
static DEFINE_OP_CLASS_ID GrOp::Owner	Make (GrRecordingContext *context, GrPaint &&paint, const SkMatrix &viewMatrix, const SkRect &devRect, float devRadius, float devStrokeWidth, bool strokeOnly)
Static Public Member Functions inherited from GrMeshDrawOp
static bool	CanUpgradeAAOnMerge (GrAAType aa1, GrAAType aa2)
Static Public Member Functions inherited from GrOp
template<typename Op , typename... Args>
static Owner	Make (GrRecordingContext *context, Args &&... args)
template<typename Op , typename... Args>
static Owner	MakeWithProcessorSet (GrRecordingContext *context, const SkPMColor4f &color, GrPaint &&paint, Args &&... args)
template<typename Op , typename... Args>
static Owner	MakeWithExtraMemory (GrRecordingContext *context, size_t extraSize, Args &&... args)
static uint32_t	GenOpClassID ()

Private Member Functions
GrProgramInfo *	programInfo () override
void	onCreateProgramInfo (const GrCaps *caps, SkArenaAlloc *arena, const GrSurfaceProxyView &writeView, bool usesMSAASurface, GrAppliedClip &&appliedClip, const GrDstProxyView &dstProxyView, GrXferBarrierFlags renderPassXferBarriers, GrLoadOp colorLoadOp) override
void	onPrepareDraws (GrMeshDrawTarget *target) override
void	onExecute (GrOpFlushState *flushState, const SkRect &chainBounds) override
CombineResult	onCombineIfPossible (GrOp *t, SkArenaAlloc *, const GrCaps &caps) override

Additional Inherited Members
Public Types inherited from GrDrawOp
enum class	ClipResult { kFail , kClippedGeometrically , kClippedInShader , kClippedOut }
Public Types inherited from GrOp
enum class	CombineResult { kMerged , kMayChain , kCannotCombine }
enum class	HasAABloat : bool { kNo = false , kYes = true }
enum class	IsHairline : bool { kNo = false , kYes = true }
using	Owner = std::unique_ptr< GrOp >
Protected Types inherited from GrDrawOp
enum class	FixedFunctionFlags : uint32_t { kNone = 0x0 , kUsesHWAA = 0x1 , kUsesStencil = 0x2 }
Protected Member Functions inherited from GrMeshDrawOp
	GrMeshDrawOp (uint32_t classID)
void	createProgramInfo (const GrCaps *caps, SkArenaAlloc *arena, const GrSurfaceProxyView &writeView, bool usesMSAASurface, GrAppliedClip &&appliedClip, const GrDstProxyView &dstProxyView, GrXferBarrierFlags renderPassXferBarriers, GrLoadOp colorLoadOp)
void	createProgramInfo (GrMeshDrawTarget *)
virtual void	onPrePrepareDraws (GrRecordingContext *, const GrSurfaceProxyView &writeView, GrAppliedClip *, const GrDstProxyView &, GrXferBarrierFlags renderPassXferBarriers, GrLoadOp colorLoadOp)
Protected Member Functions inherited from GrDrawOp
	GR_DECL_BITFIELD_CLASS_OPS_FRIENDS (FixedFunctionFlags)
Static Protected Member Functions inherited from GrMeshDrawOp
static bool	CombinedQuadCountWillOverflow (GrAAType aaType, bool willBeUpgradedToAA, int combinedQuadCount)

Detailed Description

Definition at line 2512 of file GrOvalOpFactory.cpp.

Constructor & Destructor Documentation

CircularRRectOp()

CircularRRectOp::CircularRRectOp ( GrProcessorSet *  processorSet, const SkPMColor4f &  color, const SkMatrix &  viewMatrix, const SkRect &  devRect, float  devRadius, float  devStrokeWidth, bool  strokeOnly  )

inline

Definition at line 2532 of file GrOvalOpFactory.cpp.

            : INHERITED(ClassID())
            , fViewMatrixIfUsingLocalCoords(viewMatrix)
            , fHelper(processorSet, GrAAType::kCoverage) {
        SkRect bounds = devRect;
        SkASSERT(!(devStrokeWidth <= 0 && strokeOnly));
        SkScalar innerRadius = 0.0f;
        SkScalar outerRadius = devRadius;
        SkScalar halfWidth = 0;
        RRectType type = kFill_RRectType;
        if (devStrokeWidth > 0) {
            if (SkScalarNearlyZero(devStrokeWidth)) {
                halfWidth = SK_ScalarHalf;
            } else {
                halfWidth = SkScalarHalf(devStrokeWidth);
            }
 
            if (strokeOnly) {
                // Outset stroke by 1/4 pixel
                devStrokeWidth += 0.25f;
                // If stroke is greater than width or height, this is still a fill
                // Otherwise we compute stroke params
                if (devStrokeWidth <= devRect.width() && devStrokeWidth <= devRect.height()) {
                    innerRadius = devRadius - halfWidth;
                    type = (innerRadius >= 0) ? kStroke_RRectType : kOverstroke_RRectType;
                }
            }
            outerRadius += halfWidth;
            bounds.outset(halfWidth, halfWidth);
        }
 
        // The radii are outset for two reasons. First, it allows the shader to simply perform
        // simpler computation because the computed alpha is zero, rather than 50%, at the radius.
        // Second, the outer radius is used to compute the verts of the bounding box that is
        // rendered and the outset ensures the box will cover all partially covered by the rrect
        // corners.
        outerRadius += SK_ScalarHalf;
        innerRadius -= SK_ScalarHalf;
 
        this->setBounds(bounds, HasAABloat::kYes, IsHairline::kNo);
 
        // Expand the rect for aa to generate correct vertices.
        bounds.outset(SK_ScalarHalf, SK_ScalarHalf);
 
        fRRects.emplace_back(RRect{color, innerRadius, outerRadius, bounds, type});
        fVertCount = rrect_type_to_vert_count(type);
        fIndexCount = rrect_type_to_index_count(type);
        fAllFill = (kFill_RRectType == type);
    }

Member Function Documentation

finalize()

GrProcessorSet::Analysis CircularRRectOp::finalize ( const GrCaps &  , const GrAppliedClip *  , GrClampType    )

inlineoverridevirtual

This is called after the GrAppliedClip has been computed and just prior to recording the op or combining it with a previously recorded op. The op should convert any proxies or resources it owns to "pending io" status so that resource allocation can be more optimal. Additionally, at this time the op must report whether a copy of the destination (or destination texture itself) needs to be provided to the GrXferProcessor when this op executes.

Implements GrDrawOp.

Definition at line 2594 of file GrOvalOpFactory.cpp.

                                                                      {
        SkPMColor4f* color = &fRRects.front().fColor;
        return fHelper.finalizeProcessors(caps, clip, clampType,
                                          GrProcessorAnalysisCoverage::kSingleChannel, color,
                                          &fWideColor);
    }

fixedFunctionFlags()

FixedFunctionFlags CircularRRectOp::fixedFunctionFlags ( ) const

inlineoverridevirtual

Reimplemented from GrDrawOp.

Definition at line 2602 of file GrOvalOpFactory.cpp.

{ return fHelper.fixedFunctionFlags(); }

Make()

static DEFINE_OP_CLASS_ID GrOp::Owner CircularRRectOp::Make ( GrRecordingContext *  context, GrPaint &&  paint, const SkMatrix &  viewMatrix, const SkRect &  devRect, float  devRadius, float  devStrokeWidth, bool  strokeOnly  )

inlinestatic

Definition at line 2521 of file GrOvalOpFactory.cpp.

                                             {
        return Helper::FactoryHelper<CircularRRectOp>(context, std::move(paint), viewMatrix,
                                                      devRect, devRadius,
                                                      devStrokeWidth, strokeOnly);
    }

name()

const char * CircularRRectOp::name ( ) const

inlineoverridevirtual

Implements GrOp.

Definition at line 2584 of file GrOvalOpFactory.cpp.

{ return "CircularRRectOp"; }

onCombineIfPossible()

CombineResult CircularRRectOp::onCombineIfPossible ( GrOp *  t, SkArenaAlloc *  , const GrCaps &  caps  )

inlineoverrideprivatevirtual

Reimplemented from GrOp.

Definition at line 2789 of file GrOvalOpFactory.cpp.

                                                                                           {
        CircularRRectOp* that = t->cast<CircularRRectOp>();
 
        // can only represent 65535 unique vertices with 16-bit indices
        if (fVertCount + that->fVertCount > 65536) {
            return CombineResult::kCannotCombine;
        }
 
        if (!fHelper.isCompatible(that->fHelper, caps, this->bounds(), that->bounds())) {
            return CombineResult::kCannotCombine;
        }
 
        if (fHelper.usesLocalCoords() &&
            !SkMatrixPriv::CheapEqual(fViewMatrixIfUsingLocalCoords,
                                      that->fViewMatrixIfUsingLocalCoords)) {
            return CombineResult::kCannotCombine;
        }
 
        fRRects.push_back_n(that->fRRects.size(), that->fRRects.begin());
        fVertCount += that->fVertCount;
        fIndexCount += that->fIndexCount;
        fAllFill = fAllFill && that->fAllFill;
        fWideColor = fWideColor || that->fWideColor;
        return CombineResult::kMerged;
    }

onCreateProgramInfo()

void CircularRRectOp::onCreateProgramInfo ( const GrCaps *  caps, SkArenaAlloc *  arena, const GrSurfaceProxyView &  writeView, bool  usesMSAASurface, GrAppliedClip &&  appliedClip, const GrDstProxyView &  dstProxyView, GrXferBarrierFlags  renderPassXferBarriers, GrLoadOp  colorLoadOp  )

inlineoverrideprivatevirtual

Implements GrMeshDrawOp.

Definition at line 2657 of file GrOvalOpFactory.cpp.

                                                            {
        SkASSERT(!usesMSAASurface);
 
        // Invert the view matrix as a local matrix (if any other processors require coords).
        SkMatrix localMatrix;
        if (!fViewMatrixIfUsingLocalCoords.invert(&localMatrix)) {
            return;
        }
 
        GrGeometryProcessor* gp = CircleGeometryProcessor::Make(arena, !fAllFill,
                                                                false, false, false, false,
                                                                fWideColor, localMatrix);
 
        fProgramInfo = fHelper.createProgramInfo(caps, arena, writeView, usesMSAASurface,
                                                 std::move(appliedClip), dstProxyView, gp,
                                                 GrPrimitiveType::kTriangles,
                                                 renderPassXferBarriers, colorLoadOp);
    }

onExecute()

void CircularRRectOp::onExecute ( GrOpFlushState *  flushState, const SkRect &  chainBounds  )

inlineoverrideprivatevirtual

Implements GrOp.

Definition at line 2779 of file GrOvalOpFactory.cpp.

                                                                                   {
        if (!fProgramInfo || !fMesh) {
            return;
        }
 
        flushState->bindPipelineAndScissorClip(*fProgramInfo, chainBounds);
        flushState->bindTextures(fProgramInfo->geomProc(), nullptr, fProgramInfo->pipeline());
        flushState->drawMesh(*fMesh);
    }

onPrepareDraws()

void CircularRRectOp::onPrepareDraws ( GrMeshDrawTarget *  target )

inlineoverrideprivatevirtual

Implements GrMeshDrawOp.

Definition at line 2683 of file GrOvalOpFactory.cpp.

                                                           {
        if (!fProgramInfo) {
            this->createProgramInfo(target);
            if (!fProgramInfo) {
                return;
            }
        }
 
        sk_sp<const GrBuffer> vertexBuffer;
        int firstVertex;
 
        VertexWriter verts = target->makeVertexWriter(fProgramInfo->geomProc().vertexStride(),
                                                      fVertCount, &vertexBuffer, &firstVertex);
        if (!verts) {
            SkDebugf("Could not allocate vertices\n");
            return;
        }
 
        sk_sp<const GrBuffer> indexBuffer;
        int firstIndex = 0;
        uint16_t* indices = target->makeIndexSpace(fIndexCount, &indexBuffer, &firstIndex);
        if (!indices) {
            SkDebugf("Could not allocate indices\n");
            return;
        }
 
        int currStartVertex = 0;
        for (const auto& rrect : fRRects) {
            VertexColor color(rrect.fColor, fWideColor);
            SkScalar outerRadius = rrect.fOuterRadius;
            const SkRect& bounds = rrect.fDevBounds;
 
            SkScalar yCoords[4] = {bounds.fTop, bounds.fTop + outerRadius,
                                   bounds.fBottom - outerRadius, bounds.fBottom};
 
            SkScalar yOuterRadii[4] = {-1, 0, 0, 1};
            // The inner radius in the vertex data must be specified in normalized space.
            // For fills, specifying -1/outerRadius guarantees an alpha of 1.0 at the inner radius.
            SkScalar innerRadius = rrect.fType != kFill_RRectType
                                           ? rrect.fInnerRadius / rrect.fOuterRadius
                                           : -1.0f / rrect.fOuterRadius;
            for (int i = 0; i < 4; ++i) {
                verts << bounds.fLeft << yCoords[i]
                      << color
                      << -1.0f << yOuterRadii[i]
                      << outerRadius << innerRadius;
 
                verts << (bounds.fLeft + outerRadius) << yCoords[i]
                      << color
                      << 0.0f << yOuterRadii[i]
                      << outerRadius << innerRadius;
 
                verts << (bounds.fRight - outerRadius) << yCoords[i]
                      << color
                      << 0.0f << yOuterRadii[i]
                      << outerRadius << innerRadius;
 
                verts << bounds.fRight << yCoords[i]
                      << color
                      << 1.0f << yOuterRadii[i]
                      << outerRadius << innerRadius;
            }
            // Add the additional vertices for overstroked rrects.
            // Effectively this is an additional stroked rrect, with its
            // outer radius = outerRadius - innerRadius, and inner radius = 0.
            // This will give us correct AA in the center and the correct
            // distance to the outer edge.
            //
            // Also, the outer offset is a constant vector pointing to the right, which
            // guarantees that the distance value along the outer rectangle is constant.
            if (kOverstroke_RRectType == rrect.fType) {
                SkASSERT(rrect.fInnerRadius <= 0.0f);
 
                SkScalar overstrokeOuterRadius = outerRadius - rrect.fInnerRadius;
                // this is the normalized distance from the outer rectangle of this
                // geometry to the outer edge
                SkScalar maxOffset = -rrect.fInnerRadius / overstrokeOuterRadius;
 
                FillInOverstrokeVerts(verts, bounds, outerRadius, overstrokeOuterRadius, maxOffset,
                                      overstrokeOuterRadius, 0.0f, color);
            }
 
            const uint16_t* primIndices = rrect_type_to_indices(rrect.fType);
            const int primIndexCount = rrect_type_to_index_count(rrect.fType);
            for (int i = 0; i < primIndexCount; ++i) {
                *indices++ = primIndices[i] + currStartVertex;
            }
 
            currStartVertex += rrect_type_to_vert_count(rrect.fType);
        }
 
        fMesh = target->allocMesh();
        fMesh->setIndexed(std::move(indexBuffer), fIndexCount, firstIndex, 0, fVertCount - 1,
                          GrPrimitiveRestart::kNo, std::move(vertexBuffer), firstVertex);
    }

programInfo()

GrProgramInfo * CircularRRectOp::programInfo ( )

inlineoverrideprivatevirtual

Implements GrMeshDrawOp.

Definition at line 2655 of file GrOvalOpFactory.cpp.

{ return fProgramInfo; }

visitProxies()

void CircularRRectOp::visitProxies ( const GrVisitProxyFunc &  func ) const

inlineoverridevirtual

Reimplemented from GrOp.

Definition at line 2586 of file GrOvalOpFactory.cpp.

                                                                   {
        if (fProgramInfo) {
            fProgramInfo->visitFPProxies(func);
        } else {
            fHelper.visitProxies(func);
        }
    }

---

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

• third_party/skia/src/gpu/ganesh/ops/GrOvalOpFactory.cpp