change hairline procs to take SkPoint by value, more efficient on SSE and NEON

src/core/SkScan_Antihair.cpp

 
 /*
  * Copyright 2011 The Android Open Source Project
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #include "SkScan.h"
@@ skipping 570 matching lines @@
     istart += 1;
     int fullSpans = istop - istart - (scaleStop > 0);
     if (fullSpans > 0) {
         fstart = hairBlitter->drawLine(istart, istart + fullSpans, fstart, slope);
     }
     if (scaleStop > 0) {
         hairBlitter->drawCap(istop - 1, fstart, slope, scaleStop);
     }
 }
 
-void SkScan::AntiHairLineRgn(const SkPoint& pt0, const SkPoint& pt1,
-                             const SkRegion* clip, SkBlitter* blitter) {
+void SkScan::AntiHairLineRgn(SkPoint pt0, SkPoint pt1, const SkRegion* clip, SkBlitter* blitter) {
     if (clip && clip->isEmpty()) {
         return;
     }
 
     SkASSERT(clip == NULL || !clip->getBounds().isEmpty());
 
 #ifdef TEST_GAMMA
     build_gamma_table();
 #endif
 
@@ skipping 462 matching lines @@
 
 void SkScan::AntiFrameRect(const SkRect& r, const SkPoint& strokeSize,
                            const SkRasterClip& clip, SkBlitter* blitter) {
     if (clip.isBW()) {
         AntiFrameRect(r, strokeSize, &clip.bwRgn(), blitter);
     } else {
         SkAAClipBlitterWrapper wrap(clip, blitter);
         AntiFrameRect(r, strokeSize, &wrap.getRgn(), wrap.getBlitter());
     }
 }