1 /*
2 * Copyright 2015 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "SkUtils.h"
9
10 static_assert(sizeof(Sk4px) == 16, "This file uses memcpy / sk_memset32, so exact size matters.");
11
Sk4px(SkPMColor px)12 inline Sk4px::Sk4px(SkPMColor px) {
13 sk_memset32((uint32_t*)this, px, 4);
14 }
15
Load4(const SkPMColor px[4])16 inline Sk4px Sk4px::Load4(const SkPMColor px[4]) {
17 Sk4px px4 = Sk16b();
18 memcpy(&px4, px, 16);
19 return px4;
20 }
21
Load2(const SkPMColor px[2])22 inline Sk4px Sk4px::Load2(const SkPMColor px[2]) {
23 Sk4px px2 = Sk16b();
24 memcpy(&px2, px, 8);
25 return px2;
26 }
27
Load1(const SkPMColor px[1])28 inline Sk4px Sk4px::Load1(const SkPMColor px[1]) {
29 Sk4px px1 = Sk16b();
30 memcpy(&px1, px, 4);
31 return px1;
32 }
33
store4(SkPMColor px[4])34 inline void Sk4px::store4(SkPMColor px[4]) const { memcpy(px, this, 16); }
store2(SkPMColor px[2])35 inline void Sk4px::store2(SkPMColor px[2]) const { memcpy(px, this, 8); }
store1(SkPMColor px[1])36 inline void Sk4px::store1(SkPMColor px[1]) const { memcpy(px, this, 4); }
37
widenLo()38 inline Sk4px::Wide Sk4px::widenLo() const {
39 return Sk16h(this->kth< 0>(), this->kth< 1>(), this->kth< 2>(), this->kth< 3>(),
40 this->kth< 4>(), this->kth< 5>(), this->kth< 6>(), this->kth< 7>(),
41 this->kth< 8>(), this->kth< 9>(), this->kth<10>(), this->kth<11>(),
42 this->kth<12>(), this->kth<13>(), this->kth<14>(), this->kth<15>());
43 }
44
widenHi()45 inline Sk4px::Wide Sk4px::widenHi() const { return this->widenLo() << 8; }
46
mulWiden(const Sk16b & other)47 inline Sk4px::Wide Sk4px::mulWiden(const Sk16b& other) const {
48 return this->widenLo() * Sk4px(other).widenLo();
49 }
50
addNarrowHi(const Sk16h & other)51 inline Sk4px Sk4px::Wide::addNarrowHi(const Sk16h& other) const {
52 Sk4px::Wide r = (*this + other) >> 8;
53 return Sk16b(r.kth< 0>(), r.kth< 1>(), r.kth< 2>(), r.kth< 3>(),
54 r.kth< 4>(), r.kth< 5>(), r.kth< 6>(), r.kth< 7>(),
55 r.kth< 8>(), r.kth< 9>(), r.kth<10>(), r.kth<11>(),
56 r.kth<12>(), r.kth<13>(), r.kth<14>(), r.kth<15>());
57 }
58
alphas()59 inline Sk4px Sk4px::alphas() const {
60 static_assert(SK_A32_SHIFT == 24, "This method assumes little-endian.");
61 return Sk16b(this->kth< 3>(), this->kth< 3>(), this->kth< 3>(), this->kth< 3>(),
62 this->kth< 7>(), this->kth< 7>(), this->kth< 7>(), this->kth< 7>(),
63 this->kth<11>(), this->kth<11>(), this->kth<11>(), this->kth<11>(),
64 this->kth<15>(), this->kth<15>(), this->kth<15>(), this->kth<15>());
65 }
66
Load4Alphas(const SkAlpha a[4])67 inline Sk4px Sk4px::Load4Alphas(const SkAlpha a[4]) {
68 return Sk16b(a[0], a[0], a[0], a[0],
69 a[1], a[1], a[1], a[1],
70 a[2], a[2], a[2], a[2],
71 a[3], a[3], a[3], a[3]);
72 }
73
Load2Alphas(const SkAlpha a[2])74 inline Sk4px Sk4px::Load2Alphas(const SkAlpha a[2]) {
75 return Sk16b(a[0], a[0], a[0], a[0],
76 a[1], a[1], a[1], a[1],
77 0,0,0,0,
78 0,0,0,0);
79 }
80
zeroAlphas()81 inline Sk4px Sk4px::zeroAlphas() const {
82 static_assert(SK_A32_SHIFT == 24, "This method assumes little-endian.");
83 return Sk16b(this->kth< 0>(), this->kth< 1>(), this->kth< 2>(), 0,
84 this->kth< 4>(), this->kth< 5>(), this->kth< 6>(), 0,
85 this->kth< 8>(), this->kth< 9>(), this->kth<10>(), 0,
86 this->kth<12>(), this->kth<13>(), this->kth<14>(), 0);
87 }
88
zeroColors()89 inline Sk4px Sk4px::zeroColors() const {
90 static_assert(SK_A32_SHIFT == 24, "This method assumes little-endian.");
91 return Sk16b(0,0,0, this->kth< 3>(),
92 0,0,0, this->kth< 7>(),
93 0,0,0, this->kth<11>(),
94 0,0,0, this->kth<15>());
95 }
96
97