SkSpecialImage_Raster Class Reference

Inheritance diagram for SkSpecialImage_Raster:

Public Member Functions
	SkSpecialImage_Raster (const SkIRect &subset, const SkBitmap &bm, const SkSurfaceProps &props)
bool	getROPixels (SkBitmap *bm) const
SkISize	backingStoreDimensions () const override
size_t	getSize () const override
sk_sp< SkImage >	asImage () const override
sk_sp< SkSpecialImage >	onMakeBackingStoreSubset (const SkIRect &subset) const override
sk_sp< SkShader >	asShader (SkTileMode tileMode, const SkSamplingOptions &sampling, const SkMatrix &lm, bool strict) const override
Public Member Functions inherited from SkSpecialImage
const SkSurfaceProps &	props () const
int	width () const
int	height () const
SkISize	dimensions () const
const SkIRect &	subset () const
uint32_t	uniqueID () const
virtual SkISize	backingStoreDimensions () const =0
virtual size_t	getSize () const =0
bool	isExactFit () const
const SkColorInfo &	colorInfo () const
SkAlphaType	alphaType () const
SkColorType	colorType () const
SkColorSpace *	getColorSpace () const
void	draw (SkCanvas *canvas, SkScalar x, SkScalar y, const SkSamplingOptions &sampling, const SkPaint *paint, bool strict=true) const
void	draw (SkCanvas *canvas, SkScalar x, SkScalar y) const
sk_sp< SkSpecialImage >	makeSubset (const SkIRect &subset) const
sk_sp< SkSpecialImage >	makePixelOutset () const
virtual sk_sp< SkImage >	asImage () const =0
virtual sk_sp< SkShader >	asShader (SkTileMode, const SkSamplingOptions &, const SkMatrix &lm, bool strict=true) const
virtual bool	isGaneshBacked () const
virtual bool	isGraphiteBacked () const
virtual GrRecordingContext *	getContext () const
Public Member Functions inherited from SkRefCntBase
	SkRefCntBase ()
virtual	~SkRefCntBase ()
bool	unique () const
void	ref () const
void	unref () const

Additional Inherited Members
Public Types inherited from SkSpecialImage
typedef void *	ReleaseContext
typedef void(*	RasterReleaseProc) (void *pixels, ReleaseContext)
Protected Member Functions inherited from SkSpecialImage
	SkSpecialImage (const SkIRect &subset, uint32_t uniqueID, const SkColorInfo &, const SkSurfaceProps &)
virtual sk_sp< SkSpecialImage >	onMakeBackingStoreSubset (const SkIRect &subset) const =0

Detailed Description

Definition at line 76 of file SkSpecialImage.cpp.

Constructor & Destructor Documentation

SkSpecialImage_Raster()

SkSpecialImage_Raster::SkSpecialImage_Raster ( const SkIRect &  subset, const SkBitmap &  bm, const SkSurfaceProps &  props  )

inline

Definition at line 78 of file SkSpecialImage.cpp.

            : SkSpecialImage(subset, bm.getGenerationID(), bm.info().colorInfo(), props)
            , fBitmap(bm) {
        SkASSERT(bm.pixelRef());
        SkASSERT(fBitmap.getPixels());
    }

Member Function Documentation

asImage()

sk_sp< SkImage > SkSpecialImage_Raster::asImage ( ) const

inlineoverridevirtual

Create an SkImage view of the contents of this special image, pointing to the same underlying memory.

TODO: If SkImages::MakeFiltered were to return an SkShader that accounted for the subset constraint and offset, then this could move to a private virtual for use in draw() and asShader().

Implements SkSpecialImage.

Definition at line 93 of file SkSpecialImage.cpp.

{ return fBitmap.asImage(); }

asShader()

sk_sp< SkShader > SkSpecialImage_Raster::asShader ( SkTileMode  tileMode, const SkSamplingOptions &  sampling, const SkMatrix &  lm, bool  strict  ) const

inlineoverridevirtual

Create an SkShader that samples the contents of this special image, applying tile mode for any sample that falls outside its internal subset.

'strict' defaults to true and applies shader-based tiling to the subset. If the subset is the same as the backing store dimensions, it is automatically degraded to non-strict (HW tiling and sampling). 'strict' can be set to false if it's known that the subset boundaries aren't visible AND the texel data in adjacent rows/cols is valid to be included by the given sampling options.

Reimplemented from SkSpecialImage.

Definition at line 100 of file SkSpecialImage.cpp.

                                                         {
        if (strict) {
            // TODO(skbug.com/12784): SkImage::makeShader() doesn't support a subset yet, but
            // SkBitmap supports subset views so create the shader from the subset bitmap instead of
            // fBitmap.
            SkBitmap subsetBM;
            if (!this->getROPixels(&subsetBM)) {
                return nullptr;
            }
            return subsetBM.makeShader(tileMode, tileMode, sampling, lm);
        } else {
            // The special image's logical (0,0) is at its subset's topLeft() so we need to
            // account for that in the local matrix used when sampling.
            SkMatrix subsetOrigin = SkMatrix::Translate(-this->subset().topLeft());
            subsetOrigin.postConcat(lm);
            return fBitmap.makeShader(tileMode, tileMode, sampling, subsetOrigin);
        }
    }

backingStoreDimensions()

SkISize SkSpecialImage_Raster::backingStoreDimensions ( ) const

inlineoverridevirtual

Implements SkSpecialImage.

Definition at line 89 of file SkSpecialImage.cpp.

{ return fBitmap.dimensions(); }

getROPixels()

bool SkSpecialImage_Raster::getROPixels ( SkBitmap *  bm ) const

inline

Definition at line 85 of file SkSpecialImage.cpp.

                                         {
        return fBitmap.extractSubset(bm, this->subset());
    }

getSize()

size_t SkSpecialImage_Raster::getSize ( ) const

inlineoverridevirtual

Implements SkSpecialImage.

Definition at line 91 of file SkSpecialImage.cpp.

{ return fBitmap.computeByteSize(); }

onMakeBackingStoreSubset()

sk_sp< SkSpecialImage > SkSpecialImage_Raster::onMakeBackingStoreSubset ( const SkIRect &  subset ) const

inlineoverridevirtual

Implements SkSpecialImage.

Definition at line 95 of file SkSpecialImage.cpp.

                                                                                         {
        // No need to extract subset, onGetROPixels handles that when needed
        return SkSpecialImages::MakeFromRaster(subset, fBitmap, this->props());
    }

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

• third_party/skia/src/core/SkSpecialImage.cpp