skgpu::ganesh::AALinearizingConvexPathRenderer Class Reference

#include <AALinearizingConvexPathRenderer.h>

Inheritance diagram for skgpu::ganesh::AALinearizingConvexPathRenderer:

Public Member Functions
	AALinearizingConvexPathRenderer ()=default
const char *	name () const override
Public Member Functions inherited from skgpu::ganesh::PathRenderer
	PathRenderer ()=default
StencilSupport	getStencilSupport (const GrStyledShape &shape) const
CanDrawPath	canDrawPath (const CanDrawPathArgs &args) const
bool	drawPath (const DrawPathArgs &args)
void	stencilPath (const StencilPathArgs &args)
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Private Member Functions
CanDrawPath	onCanDrawPath (const CanDrawPathArgs &) const override
bool	onDrawPath (const DrawPathArgs &) override

Additional Inherited Members
Public Types inherited from skgpu::ganesh::PathRenderer
enum	StencilSupport { kNoSupport_StencilSupport , kStencilOnly_StencilSupport , kNoRestriction_StencilSupport }
enum class	CanDrawPath { kNo , kAsBackup , kYes }
Static Protected Member Functions inherited from skgpu::ganesh::PathRenderer
static void	GetPathDevBounds (const SkPath &path, SkISize devSize, const SkMatrix &matrix, SkRect *bounds)

Detailed Description

Definition at line 15 of file AALinearizingConvexPathRenderer.h.

Constructor & Destructor Documentation

AALinearizingConvexPathRenderer()

skgpu::ganesh::AALinearizingConvexPathRenderer::AALinearizingConvexPathRenderer ( )

default

Member Function Documentation

name()

const char * skgpu::ganesh::AALinearizingConvexPathRenderer::name ( ) const

inlineoverridevirtual

Implements skgpu::ganesh::PathRenderer.

Definition at line 19 of file AALinearizingConvexPathRenderer.h.

{ return "AALinear"; }

onCanDrawPath()

PathRenderer::CanDrawPath skgpu::ganesh::AALinearizingConvexPathRenderer::onCanDrawPath ( const CanDrawPathArgs &  args ) const

overrideprivatevirtual

Subclass implementation of canDrawPath()

Implements skgpu::ganesh::PathRenderer.

Definition at line 346 of file AALinearizingConvexPathRenderer.cpp.

                                                                                {
    if (GrAAType::kCoverage != args.fAAType) {
        return CanDrawPath::kNo;
    }
    if (!args.fShape->knownToBeConvex()) {
        return CanDrawPath::kNo;
    }
    if (args.fShape->style().pathEffect()) {
        return CanDrawPath::kNo;
    }
    if (args.fShape->inverseFilled()) {
        return CanDrawPath::kNo;
    }
    if (args.fShape->bounds().width() <= 0 && args.fShape->bounds().height() <= 0) {
        // Stroked zero length lines should draw, but this PR doesn't handle that case
        return CanDrawPath::kNo;
    }
    const SkStrokeRec& stroke = args.fShape->style().strokeRec();
 
    if (stroke.getStyle() == SkStrokeRec::kStroke_Style ||
        stroke.getStyle() == SkStrokeRec::kStrokeAndFill_Style) {
        if (!args.fViewMatrix->isSimilarity()) {
            return CanDrawPath::kNo;
        }
        SkScalar strokeWidth = args.fViewMatrix->getMaxScale() * stroke.getWidth();
        if (strokeWidth < 1.0f && stroke.getStyle() == SkStrokeRec::kStroke_Style) {
            return CanDrawPath::kNo;
        }
        if ((strokeWidth > kMaxStrokeWidth && !args.fShape->isRect()) ||
            !args.fShape->knownToBeClosed() ||
            stroke.getJoin() == SkPaint::Join::kRound_Join) {
            return CanDrawPath::kNo;
        }
        return CanDrawPath::kYes;
    }
    if (stroke.getStyle() != SkStrokeRec::kFill_Style) {
        return CanDrawPath::kNo;
    }
    // This can almost handle perspective. It would need to use 3 component explicit local coords
    // when there are FPs that require them. This is difficult to test because AAConvexPathRenderer
    // takes almost all filled paths that could get here. So just avoid perspective fills.
    if (args.fViewMatrix->hasPerspective()) {
        return CanDrawPath::kNo;
    }
    return CanDrawPath::kYes;
}

onDrawPath()

bool skgpu::ganesh::AALinearizingConvexPathRenderer::onDrawPath ( const DrawPathArgs &  args )

overrideprivatevirtual

Subclass implementation of drawPath()

Implements skgpu::ganesh::PathRenderer.

Definition at line 393 of file AALinearizingConvexPathRenderer.cpp.

                                                                         {
    GR_AUDIT_TRAIL_AUTO_FRAME(args.fContext->priv().auditTrail(),
                              "AALinearizingConvexPathRenderer::onDrawPath");
    SkASSERT(args.fSurfaceDrawContext->numSamples() <= 1);
    SkASSERT(!args.fShape->isEmpty());
    SkASSERT(!args.fShape->style().pathEffect());
 
    SkPath path;
    args.fShape->asPath(&path);
    bool fill = args.fShape->style().isSimpleFill();
    const SkStrokeRec& stroke = args.fShape->style().strokeRec();
    SkScalar strokeWidth = fill ? -1.0f : stroke.getWidth();
    SkPaint::Join join = fill ? SkPaint::Join::kMiter_Join : stroke.getJoin();
    SkScalar miterLimit = stroke.getMiter();
 
    GrOp::Owner op = AAFlatteningConvexPathOp::Make(
            args.fContext, std::move(args.fPaint), *args.fViewMatrix, path, strokeWidth,
            stroke.getStyle(), join, miterLimit, args.fUserStencilSettings);
    args.fSurfaceDrawContext->addDrawOp(args.fClip, std::move(op));
    return true;
}

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

• third_party/skia/src/gpu/ganesh/ops/AALinearizingConvexPathRenderer.h
• third_party/skia/src/gpu/ganesh/ops/AALinearizingConvexPathRenderer.cpp