Add Sk4f::ToBytes(uint8_t[16], Sk4f, Sk4f, Sk4f, Sk4f)

src/core/SkNx.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 SkNx_DEFINED
 #define SkNx_DEFINED
 
@@ skipping 95 matching lines @@
         fLo.store(vals);
         fHi.store(vals+N/2);
     }
     // Please see note on FromBytes().
     // Clamps to [0.0,255.0] floats and truncates to [0,255] bytes.
     void toBytes(uint8_t bytes[N]) const {
         fLo.toBytes(bytes);
         fHi.toBytes(bytes+N/2);
     }
 
+    // Some implementations can do this faster.
+    static void ToBytes(uint8_t bytes[4*N],
+                        const SkNx& a, const SkNx& b, const SkNx& c, const SkNx& d) {
+        a.toBytes(bytes+0*N);
+        b.toBytes(bytes+1*N);
+        c.toBytes(bytes+2*N);
+        d.toBytes(bytes+3*N);
+    }
+
     SkNx operator + (const SkNx& o) const { return SkNx(fLo + o.fLo, fHi + o.fHi); }
     SkNx operator - (const SkNx& o) const { return SkNx(fLo - o.fLo, fHi - o.fHi); }
     SkNx operator * (const SkNx& o) const { return SkNx(fLo * o.fLo, fHi * o.fHi); }
     SkNx operator / (const SkNx& o) const { return SkNx(fLo / o.fLo, fHi / o.fHi); }
 
     SkNx operator == (const SkNx& o) const { return SkNx(fLo == o.fLo, fHi == o.fHi); }
     SkNx operator != (const SkNx& o) const { return SkNx(fLo != o.fLo, fHi != o.fHi); }
     SkNx operator  < (const SkNx& o) const { return SkNx(fLo  < o.fLo, fHi  < o.fHi); }
     SkNx operator  > (const SkNx& o) const { return SkNx(fLo  > o.fLo, fHi  > o.fHi); }
     SkNx operator <= (const SkNx& o) const { return SkNx(fLo <= o.fLo, fHi <= o.fHi); }
@@ skipping 192 matching lines @@
 typedef SkNx<8, float> Sk8f;
 typedef SkNx<8, float> Sk8s;
 
 typedef SkNx<8,  uint16_t> Sk8h;
 typedef SkNx<16, uint16_t> Sk16h;
 typedef SkNx<16, uint8_t>  Sk16b;
 
 typedef SkNx<4, int> Sk4i;
 
 #endif//SkNx_DEFINED