SkNx refresh

src/effects/gradients/SkRadialGradient.cpp

 
 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkRadialGradient.h"
 #include "SkNx.h"
@@ skipping 76 matching lines @@
     bool yClamped = (fy >= 1 && dy >= 0) || (fy <= -1 && dy <= 0);
     return xClamped || yClamped;
 }
 
 typedef void (* RadialShadeProc)(SkScalar sfx, SkScalar sdx,
         SkScalar sfy, SkScalar sdy,
         SkPMColor* dstC, const SkPMColor* cache,
         int count, int toggle);
 
 static inline Sk4f fast_sqrt(const Sk4f& R) {
-    // R * R.rsqrt0() is much faster, but it's non-monotonic, which isn't so pretty for gradients.
-    return R * R.rsqrt1();
+    return R * R.rsqrt();
 }
 
 static inline Sk4f sum_squares(const Sk4f& a, const Sk4f& b) {
     return a * a + b * b;
 }
 
 void shadeSpan_radial_clamp2(SkScalar sfx, SkScalar sdx, SkScalar sfy, SkScalar sdy,
                              SkPMColor* SK_RESTRICT dstC, const SkPMColor* SK_RESTRICT cache,
                              int count, int toggle) {
     if (radial_completely_pinned(sfx, sdx, sfy, sdy)) {
@@ skipping 267 matching lines @@
     str->appendScalar(fCenter.fY);
     str->append(") radius: ");
     str->appendScalar(fRadius);
     str->append(" ");
 
     this->INHERITED::toString(str);
 
     str->append(")");
 }
 #endif