Sk2x

This adds an API, an SSE impl, a portable impl, and some tests for Sk2f/Sk2d/Sk2s.

BUG=skia:

Review URL: https://codereview.chromium.org/1025463002

1 files changed, 66 insertions, 0 deletions

diff --git a/src/opts/Sk2x_none.h b/src/opts/Sk2x_none.h
new file mode 100644
index 0000000000..12daffd72f
--- /dev/null
+++ b/src/opts/Sk2x_none.h
@@ -0,0 +1,66 @@
+/*
+ * Copyright 2015 Google Inc.
+ *
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+// It is important _not_ to put header guards here.
+// This file will be intentionally included three times.
+
+#include "SkTypes.h"  // Keep this before any #ifdef for skbug.com/3362
+
+#if defined(SK2X_PREAMBLE)
+    #include "SkFloatingPoint.h"
+    #include <math.h>
+
+#elif defined(SK2X_PRIVATE)
+    T fVec[2];
+
+#else
+
+#define M(...) template <typename T> __VA_ARGS__ Sk2x<T>::
+
+M() Sk2x() {}
+M() Sk2x(T val) { fVec[0] = fVec[1] = val; }
+M() Sk2x(T a, T b) { fVec[0] = a; fVec[1] = b; }
+
+M(Sk2x<T>&) operator=(const Sk2x<T>& o) {
+    fVec[0] = o.fVec[0];
+    fVec[1] = o.fVec[1];
+    return *this;
+}
+
+M(Sk2x<T>) Load(const T vals[2]) { return Sk2x<T>(vals[0], vals[1]); }
+M(void) store(T vals[2]) const { vals[0] = fVec[0]; vals[1] = fVec[1]; }
+
+M(Sk2x<T>) add(const Sk2x<T>& o) const {
+    return Sk2x<T>(fVec[0] + o.fVec[0], fVec[1] + o.fVec[1]);
+}
+M(Sk2x<T>) subtract(const Sk2x<T>& o) const {
+    return Sk2x<T>(fVec[0] - o.fVec[0], fVec[1] - o.fVec[1]);
+}
+M(Sk2x<T>) multiply(const Sk2x<T>& o) const {
+    return Sk2x<T>(fVec[0] * o.fVec[0], fVec[1] * o.fVec[1]);
+}
+
+M(Sk2x<T>) Min(const Sk2x<T>& a, const Sk2x<T>& b) {
+    return Sk2x<T>(SkTMin(a.fVec[0], b.fVec[0]), SkTMin(a.fVec[1], b.fVec[1]));
+}
+M(Sk2x<T>) Max(const Sk2x<T>& a, const Sk2x<T>& b) {
+    return Sk2x<T>(SkTMax(a.fVec[0], b.fVec[0]), SkTMax(a.fVec[1], b.fVec[1]));
+}
+
+#undef M
+
+#define M template <> inline
+
+M Sk2f Sk2f::rsqrt() const { return Sk2f(sk_float_rsqrt(fVec[0]), sk_float_rsqrt(fVec[1])); }
+M Sk2f Sk2f:: sqrt() const { return Sk2f(         sqrtf(fVec[0]),          sqrtf(fVec[1])); }
+
+M Sk2d Sk2d::rsqrt() const { return Sk2d(1.0/::sqrt(fVec[0]), 1.0/::sqrt(fVec[1])); }
+M Sk2d Sk2d:: sqrt() const { return Sk2d(    ::sqrt(fVec[0]),     ::sqrt(fVec[1])); }
+
+#undef M
+
+#endif