SkNx refresh

src/opts/SkXfermode_opts.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef Sk4pxXfermode_DEFINED
 #define Sk4pxXfermode_DEFINED
 
@@ skipping 115 matching lines @@
 }
 
 XFERMODE(ColorDodge) {
     auto sa = alphas(s),
          da = alphas(d),
          isa = Sk4f(1)-sa,
          ida = Sk4f(1)-da;
 
     auto srcover = s + d*isa,
          dstover = d + s*ida,
-         otherwise = sa * Sk4f::Min(da, (d*sa)*(sa-s).approxInvert()) + s*ida + d*isa;
+         otherwise = sa * Sk4f::Min(da, (d*sa)*(sa-s).invert()) + s*ida + d*isa;
 
     // Order matters here, preferring d==0 over s==sa.
     auto colors = (d == Sk4f(0)).thenElse(dstover,
                   (s ==      sa).thenElse(srcover,
                                           otherwise));
     return a_rgb(srcover, colors);
 }
 XFERMODE(ColorBurn) {
     auto sa = alphas(s),
          da = alphas(d),
          isa = Sk4f(1)-sa,
          ida = Sk4f(1)-da;
 
     auto srcover = s + d*isa,
          dstover = d + s*ida,
-         otherwise = sa*(da-Sk4f::Min(da, (da-d)*sa*s.approxInvert())) + s*ida + d*isa;
+         otherwise = sa*(da-Sk4f::Min(da, (da-d)*sa*s.invert())) + s*ida + d*isa;
 
     // Order matters here, preferring d==da over s==0.
     auto colors = (d ==      da).thenElse(dstover,
                   (s == Sk4f(0)).thenElse(srcover,
                                           otherwise));
     return a_rgb(srcover, colors);
 }
 XFERMODE(SoftLight) {
     auto sa = alphas(s),
          da = alphas(d),
@@ skipping 188 matching lines @@
     #undef CASE
 
         default: break;
     }
     return nullptr;
 }
 
 } // namespace SK_OPTS_NS
 
 #endif//Sk4pxXfermode_DEFINED