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gerrit-public.fairphone.software / platform / external / skia / e70afc9f48d00828ee6b707899a8ff542b0e8b98 / . / src / opts / SkMatrix_opts.h
blob: 2d0a142cf1857209c9126f675c8a8dc62c5d529e [file] [log] [blame]
mtklein4e8a09d2015-09-10 11:18:31 -0700[diff] [blame]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#ifndef SkMatrix_opts_DEFINED
9#define SkMatrix_opts_DEFINED
10
11#include "SkMatrix.h"
12#include "SkNx.h"
13
14namespace SK_OPTS_NS {
15
16static void matrix_translate(const SkMatrix& m, SkPoint* dst, const SkPoint* src, int count) {
17 SkASSERT(m.getType() <= SkMatrix::kTranslate_Mask);
18 if (count > 0) {
19 SkScalar tx = m.getTranslateX();
20 SkScalar ty = m.getTranslateY();
21 if (count & 1) {
22 dst->fX = src->fX + tx;
23 dst->fY = src->fY + ty;
24 src += 1;
25 dst += 1;
26 }
27 Sk4s trans4(tx, ty, tx, ty);
28 count >>= 1;
29 if (count & 1) {
30 (Sk4s::Load(&src->fX) + trans4).store(&dst->fX);
31 src += 2;
32 dst += 2;
33 }
34 count >>= 1;
35 for (int i = 0; i < count; ++i) {
36 (Sk4s::Load(&src[0].fX) + trans4).store(&dst[0].fX);
37 (Sk4s::Load(&src[2].fX) + trans4).store(&dst[2].fX);
38 src += 4;
39 dst += 4;
40 }
41 }
42}
43
44static void matrix_scale_translate(const SkMatrix& m, SkPoint* dst, const SkPoint* src, int count) {
45 SkASSERT(m.getType() <= (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask));
46 if (count > 0) {
47 SkScalar tx = m.getTranslateX();
48 SkScalar ty = m.getTranslateY();
49 SkScalar sx = m.getScaleX();
50 SkScalar sy = m.getScaleY();
51 if (count & 1) {
52 dst->fX = src->fX * sx + tx;
53 dst->fY = src->fY * sy + ty;
54 src += 1;
55 dst += 1;
56 }
57 Sk4s trans4(tx, ty, tx, ty);
58 Sk4s scale4(sx, sy, sx, sy);
59 count >>= 1;
60 if (count & 1) {
61 (Sk4s::Load(&src->fX) * scale4 + trans4).store(&dst->fX);
62 src += 2;
63 dst += 2;
64 }
65 count >>= 1;
66 for (int i = 0; i < count; ++i) {
67 (Sk4s::Load(&src[0].fX) * scale4 + trans4).store(&dst[0].fX);
68 (Sk4s::Load(&src[2].fX) * scale4 + trans4).store(&dst[2].fX);
69 src += 4;
70 dst += 4;
71 }
72 }
73}
74
75static void matrix_affine(const SkMatrix& m, SkPoint* dst, const SkPoint* src, int count) {
76 SkASSERT(m.getType() != SkMatrix::kPerspective_Mask);
77 if (count > 0) {
78 SkScalar tx = m.getTranslateX();
79 SkScalar ty = m.getTranslateY();
80 SkScalar sx = m.getScaleX();
81 SkScalar sy = m.getScaleY();
82 SkScalar kx = m.getSkewX();
83 SkScalar ky = m.getSkewY();
84 if (count & 1) {
85 dst->set(src->fX * sx + src->fY * kx + tx,
86 src->fX * ky + src->fY * sy + ty);
87 src += 1;
88 dst += 1;
89 }
90 Sk4s trans4(tx, ty, tx, ty);
91 Sk4s scale4(sx, sy, sx, sy);
mtkleine70afc92015-09-10 14:32:32 -0700[diff] [blame^]92 Sk4s skew4(ky, kx, ky, kx); // applied src4, then x/y swapped
mtklein4e8a09d2015-09-10 11:18:31 -0700[diff] [blame]93 count >>= 1;
94 for (int i = 0; i < count; ++i) {
95 Sk4s src4 = Sk4s::Load(&src->fX);
mtkleine70afc92015-09-10 14:32:32 -0700[diff] [blame^]96 (trans4 + src4 * scale4 + SkNx_shuffle<1,0,3,2>(src4 * skew4)).store(&dst->fX);
mtklein4e8a09d2015-09-10 11:18:31 -0700[diff] [blame]97 src += 2;
98 dst += 2;
99 }
100 }
101}
102
103} // namespace SK_OPTS_NS
104
105#endif//SkMatrix_opts_DEFINED