Inheritance diagram for SkPerlinNoiseShader::PerlinNoiseShaderContext:

Public Member Functions
	PerlinNoiseShaderContext (const SkPerlinNoiseShader &shader, const ContextRec &)

void	shadeSpan (int x, int y, SkPMColor[], int count) override
	Called for each span of the object being drawn. More...

Public Member Functions inherited from SkShader::Context
	Context (const SkShader &shader, const ContextRec &)

virtual uint32_t	getFlags () const
	Called sometimes before drawing with this shader. More...

virtual void	shadeSpan4f (int x, int y, SkPM4f[], int count)

bool	chooseBlitProcs (const SkImageInfo &info, BlitState *state)

virtual ShadeProc	asAShadeProc (void **ctx)

virtual void	shadeSpanAlpha (int x, int y, uint8_t alpha[], int count)
	Similar to shadeSpan, but only returns the alpha-channel for a span. More...

virtual void	set3DMask (const SkMask *)

Private Member Functions
SkPMColor	shade (const SkPoint &point, StitchData &stitchData) const

SkScalar	calculateTurbulenceValueForPoint (int channel, StitchData &stitchData, const SkPoint &point) const

SkScalar	noise2D (int channel, const StitchData &stitchData, const SkPoint &noiseVector) const

Additional Inherited Members
Public Types inherited from SkShader::Context
typedef void(*	BlitBW )(BlitState *, int x, int y, const SkPixmap &, int count)

typedef void(*	BlitAA )(BlitState *, int x, int y, const SkPixmap &, int count, const SkAlpha[])

typedef void(*	ShadeProc )(const void *ctx, int x, int y, SkPMColor[], int count)
	The const void* ctx is only const because all the implementations are const. More...

Protected Types inherited from SkShader::Context
enum	MatrixClass { kLinear_MatrixClass, kFixedStepInX_MatrixClass, kPerspective_MatrixClass }

Protected Member Functions inherited from SkShader::Context
uint8_t	getPaintAlpha () const

const SkMatrix &	getTotalInverse () const

MatrixClass	getInverseClass () const

const SkMatrix &	getCTM () const

virtual bool	onChooseBlitProcs (const SkImageInfo &, BlitState *)

Static Protected Member Functions inherited from SkShader::Context
static MatrixClass	ComputeMatrixClass (const SkMatrix &)

Protected Attributes inherited from SkShader::Context
const SkShader &	fShader

Member Function Documentation

void SkPerlinNoiseShader::PerlinNoiseShaderContext::shadeSpan	(	int	x,
		int	y,
		SkPMColor	[],
		int	count
	)

overridevirtual

Called for each span of the object being drawn.

Your subclass should set the appropriate colors (with premultiplied alpha) that correspond to the specified device coordinates.

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

Public Member Functions