edeccc5860
We've always been using the portable ColorRect32, so we don't need the ColorRectProc plumbing. Furthermore, ColorRect32 doesn't seem to be very important (we're only using it in the opaque case, which our row-by-row procs already specialize for). Remove that too. If we find we want specialization for really narrow rects again, let's put it in blitRect() directly. It's pretty unlikely we're going to get platform-specific speedup for blits to non-contiguous memory. My local SKP comparison is +- 3%... most neutral I've ever seen. BUG=skia: Review URL: https://codereview.chromium.org/959873002
101 lines
3.3 KiB
C++
101 lines
3.3 KiB
C++
/*
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* Copyright 2011 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkBlitRow_DEFINED
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#define SkBlitRow_DEFINED
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#include "SkBitmap.h"
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#include "SkColor.h"
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class SkBlitRow {
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public:
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enum Flags16 {
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//! If set, the alpha parameter will be != 255
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kGlobalAlpha_Flag = 0x01,
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//! If set, the src colors may have alpha != 255
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kSrcPixelAlpha_Flag = 0x02,
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//! If set, the resulting 16bit colors should be dithered
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kDither_Flag = 0x04
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};
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/** Function pointer that reads a scanline of src SkPMColors, and writes
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a corresponding scanline of 16bit colors (specific format based on the
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config passed to the Factory.
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The x,y params provide the dithering phase for the start of the scanline
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@param alpha A global alpha to be applied to all of the src colors
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@param x The x coordinate of the beginning of the scanline
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@param y THe y coordinate of the scanline
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*/
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typedef void (*Proc16)(uint16_t dst[], const SkPMColor src[], int count,
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U8CPU alpha, int x, int y);
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static Proc16 Factory16(unsigned flags);
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/**
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* Function pointer that blends a single src color onto a scaline of dst colors.
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*
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* The x,y params provide the dithering phase for the start of the scanline
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*/
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typedef void (*ColorProc16)(uint16_t dst[], SkPMColor src, int count, int x, int y);
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// Note : we ignore the kGlobalAlpha_Flag setting, but do respect kSrcPixelAlpha_Flag
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static ColorProc16 ColorFactory16(unsigned flags);
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///////////// D32 version
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enum Flags32 {
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kGlobalAlpha_Flag32 = 1 << 0,
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kSrcPixelAlpha_Flag32 = 1 << 1
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};
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/** Function pointer that blends 32bit colors onto a 32bit destination.
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@param dst array of dst 32bit colors
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@param src array of src 32bit colors (w/ or w/o alpha)
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@param count number of colors to blend
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@param alpha global alpha to be applied to all src colors
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*/
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typedef void (*Proc32)(uint32_t dst[], const SkPMColor src[], int count, U8CPU alpha);
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static Proc32 Factory32(unsigned flags32);
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/** Function pointer that blends a single color with a row of 32-bit colors
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onto a 32-bit destination
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*/
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typedef void (*ColorProc)(SkPMColor dst[], const SkPMColor src[], int count, SkPMColor color);
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/** Blend a single color onto a row of S32 pixels, writing the result
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into a row of D32 pixels. src and dst may be the same memory, but
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if they are not, they may not overlap.
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*/
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static void Color32(SkPMColor dst[], const SkPMColor src[], int count, SkPMColor color);
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//! Public entry-point to return a blit function ptr
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static ColorProc ColorProcFactory();
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/** These static functions are called by the Factory and Factory32
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functions, and should return either NULL, or a
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platform-specific function-ptr to be used in place of the
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system default.
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*/
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static Proc32 PlatformProcs32(unsigned flags);
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static ColorProc PlatformColorProc();
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static Proc16 PlatformFactory565(unsigned flags);
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static ColorProc16 PlatformColorFactory565(unsigned flags);
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private:
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enum {
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kFlags16_Mask = 7,
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kFlags32_Mask = 3
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};
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};
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#endif
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