8dd90a926a
15% speedup for rectangles < 31 px wide, 5% for larger. http://codereview.appspot.com/5843050/ git-svn-id: http://skia.googlecode.com/svn/trunk@3423 2bbb7eff-a529-9590-31e7-b0007b416f81
106 lines
3.5 KiB
C++
106 lines
3.5 KiB
C++
/*
|
|
* Copyright 2011 Google Inc.
|
|
*
|
|
* Use of this source code is governed by a BSD-style license that can be
|
|
* found in the LICENSE file.
|
|
*/
|
|
|
|
#ifndef SkBlitRow_DEFINED
|
|
#define SkBlitRow_DEFINED
|
|
|
|
#include "SkBitmap.h"
|
|
#include "SkColor.h"
|
|
|
|
class SkBlitRow {
|
|
public:
|
|
enum Flags16 {
|
|
//! If set, the alpha parameter will be != 255
|
|
kGlobalAlpha_Flag = 0x01,
|
|
//! If set, the src colors may have alpha != 255
|
|
kSrcPixelAlpha_Flag = 0x02,
|
|
//! If set, the resulting 16bit colors should be dithered
|
|
kDither_Flag = 0x04
|
|
};
|
|
|
|
/** 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 are useful just for dithering
|
|
|
|
@param alpha A global alpha to be applied to all of the src colors
|
|
@param x The x coordinate of the beginning of the scanline
|
|
@param y THe y coordinate of the scanline
|
|
*/
|
|
typedef void (*Proc)(uint16_t* dst,
|
|
const SkPMColor* src,
|
|
int count, U8CPU alpha, int x, int y);
|
|
|
|
static Proc Factory(unsigned flags, SkBitmap::Config);
|
|
|
|
///////////// D32 version
|
|
|
|
enum Flags32 {
|
|
kGlobalAlpha_Flag32 = 1 << 0,
|
|
kSrcPixelAlpha_Flag32 = 1 << 1,
|
|
};
|
|
|
|
/** Function pointer that blends 32bit colors onto a 32bit destination.
|
|
@param dst array of dst 32bit colors
|
|
@param src array of src 32bit colors (w/ or w/o alpha)
|
|
@param count number of colors to blend
|
|
@param alpha global alpha to be applied to all src colors
|
|
*/
|
|
typedef void (*Proc32)(uint32_t* dst,
|
|
const SkPMColor* src,
|
|
int count, U8CPU alpha);
|
|
|
|
static Proc32 Factory32(unsigned flags32);
|
|
|
|
/** Function pointer that blends a single color with a row of 32-bit colors
|
|
onto a 32-bit destination
|
|
*/
|
|
typedef void (*ColorProc)(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. src and dst may be the same memory, but
|
|
if they are not, they may not overlap.
|
|
*/
|
|
static void Color32(SkPMColor dst[], const SkPMColor src[],
|
|
int count, SkPMColor color);
|
|
|
|
//! Public entry-point to return a blit function ptr
|
|
static ColorProc ColorProcFactory();
|
|
|
|
/** Function pointer that blends a single color onto a 32-bit rectangle. */
|
|
typedef void (*ColorRectProc)(SkPMColor* dst, int width, int height,
|
|
size_t rowBytes, SkPMColor color);
|
|
|
|
/** Blend a single color into a rectangle of D32 pixels. */
|
|
static void ColorRect32(SkPMColor* dst, int width, int height,
|
|
size_t rowBytes, SkPMColor color);
|
|
|
|
//! Public entry-point to return a blit function ptr
|
|
static ColorRectProc ColorRectProcFactory();
|
|
|
|
/** 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 Proc32 PlatformProcs32(unsigned flags);
|
|
static Proc PlatformProcs565(unsigned flags);
|
|
static Proc PlatformProcs4444(unsigned flags);
|
|
static ColorProc PlatformColorProc();
|
|
|
|
private:
|
|
enum {
|
|
kFlags16_Mask = 7,
|
|
kFlags32_Mask = 3
|
|
};
|
|
};
|
|
|
|
#endif
|