increase subdivision for very large cubics

src/core/SkScan_Hairline.cpp

 /*
  * Copyright 2006 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"
 #include "SkBlitter.h"
 #include "SkRasterClip.h"
@@ skipping 174 matching lines @@
     blitter->blitRect(r.fRight - 1, r.fTop + 1, 1, height - 2); // right
     blitter->blitH(r.fLeft, r.fBottom - 1, width);              // bottom
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 #include "SkPath.h"
 #include "SkGeometry.h"
 #include "SkNx.h"
 
-#define kMaxCubicSubdivideLevel 6
+#define kMaxCubicSubdivideLevel 9
 #define kMaxQuadSubdivideLevel  5
 
 static int compute_int_quad_dist(const SkPoint pts[3]) {
     // compute the vector between the control point ([1]) and the middle of the
     // line connecting the start and end ([0] and [2])
     SkScalar dx = SkScalarHalf(pts[0].fX + pts[2].fX) - pts[1].fX;
     SkScalar dy = SkScalarHalf(pts[0].fY + pts[2].fY) - pts[1].fY;
     // we want everyone to be positive
     dx = SkScalarAbs(dx);
     dy = SkScalarAbs(dy);
@@ skipping 473 matching lines @@
 
         SkAAClipBlitterWrapper wrap;
         if (!clip.quickContains(r.roundOut().makeOutset(1, 1))) {
             wrap.init(clip, blitter);
             blitter = wrap.getBlitter();
             clipRgn = &wrap.getRgn();
         }
         AntiHairLineRgn(pts, count, clipRgn, blitter);
     }
 }