SkBlitRow Class Reference

Public Types
enum	Flags16 { kGlobalAlpha_Flag = 0x01, kSrcPixelAlpha_Flag = 0x02, kDither_Flag = 0x04 }
enum	Flags32 { kGlobalAlpha_Flag32 = 1 << 0, kSrcPixelAlpha_Flag32 = 1 << 1 }
typedef void(*	Proc16 )(uint16_t dst[], const SkPMColor src[], int count, U8CPU alpha, int x, int y)
	Function pointer that reads a scanline of src SkPMColors, and writes a corresponding scanline of 16bit colors (specific format based on the config passed to the Factory. More...
typedef void(*	ColorProc16 )(uint16_t dst[], SkPMColor src, int count, int x, int y)
	Function pointer that blends a single src color onto a scaline of dst colors. More...
typedef void(*	Proc32 )(uint32_t dst[], const SkPMColor src[], int count, U8CPU alpha)
	Function pointer that blends 32bit colors onto a 32bit destination. More...

Static Public Member Functions
static Proc16	Factory16 (unsigned flags)
static ColorProc16	ColorFactory16 (unsigned flags)
static Proc32	Factory32 (unsigned flags32)
static void	Color32 (SkPMColor dst[], const SkPMColor src[], int count, SkPMColor color)
	Blend a single color onto a row of S32 pixels, writing the result into a row of D32 pixels. More...
static Proc32	PlatformProcs32 (unsigned flags)
	These static functions are called by the Factory and Factory32 functions, and should return either NULL, or a platform-specific function-ptr to be used in place of the system default.
static Proc16	PlatformFactory565 (unsigned flags)
static ColorProc16	PlatformColorFactory565 (unsigned flags)

Private Types
enum	{ kFlags16_Mask = 7, kFlags32_Mask = 3 }

Member Typedef Documentation

typedef void(* SkBlitRow::ColorProc16)(uint16_t dst[], SkPMColor src, int count, int x, int y)

Function pointer that blends a single src color onto a scaline of dst colors.

The x,y params provide the dithering phase for the start of the scanline

typedef void(* SkBlitRow::Proc16)(uint16_t dst[], const SkPMColor src[], int count, U8CPU alpha, int x, int y)

Function pointer that reads a scanline of src SkPMColors, and writes a corresponding scanline of 16bit colors (specific format based on the config passed to the Factory.

The x,y params provide the dithering phase for the start of the scanline

Parameters

alpha	A global alpha to be applied to all of the src colors
x	The x coordinate of the beginning of the scanline
y	THe y coordinate of the scanline

typedef void(* SkBlitRow::Proc32)(uint32_t dst[], const SkPMColor src[], int count, U8CPU alpha)

Function pointer that blends 32bit colors onto a 32bit destination.

Parameters

dst	array of dst 32bit colors
src	array of src 32bit colors (w/ or w/o alpha)
count	number of colors to blend
alpha	global alpha to be applied to all src colors

Member Enumeration Documentation

enum SkBlitRow::Flags16

Enumerator
kGlobalAlpha_Flag	If set, the alpha parameter will be != 255.
kSrcPixelAlpha_Flag	If set, the src colors may have alpha != 255.
kDither_Flag	If set, the resulting 16bit colors should be dithered.

Member Function Documentation

static void SkBlitRow::Color32 ( SkPMColor  dst[], const SkPMColor  src[], int  count, SkPMColor  color  )

static

Blend a single color onto a row of S32 pixels, writing the result into a row of D32 pixels.

src and dst may be the same memory, but if they are not, they may not overlap.

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

• include/core/SkBlitRow.h