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1 /* | 1 /* |
2 * Copyright 2006 The Android Open Source Project | 2 * Copyright 2006 The Android Open Source Project |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
| 8 #include "SkFloatBits.h" |
8 #include "SkMatrix.h" | 9 #include "SkMatrix.h" |
9 #include "SkFloatBits.h" | 10 #include "SkNx.h" |
| 11 #include "SkPaint.h" |
10 #include "SkRSXform.h" | 12 #include "SkRSXform.h" |
11 #include "SkString.h" | 13 #include "SkString.h" |
12 #include "SkNx.h" | |
13 #include "SkOpts.h" | |
14 | |
15 #include <stddef.h> | 14 #include <stddef.h> |
16 | 15 |
17 static void normalize_perspective(SkScalar mat[9]) { | 16 static void normalize_perspective(SkScalar mat[9]) { |
18 // If it was interesting to never store the last element, we could divide al
l 8 other | 17 // If it was interesting to never store the last element, we could divide al
l 8 other |
19 // elements here by the 9th, making it 1.0... | 18 // elements here by the 9th, making it 1.0... |
20 // | 19 // |
21 // When SkScalar was SkFixed, we would sometimes rescale the entire matrix t
o keep its | 20 // When SkScalar was SkFixed, we would sometimes rescale the entire matrix t
o keep its |
22 // component values from getting too large. This is not a concern when using
floats/doubles, | 21 // component values from getting too large. This is not a concern when using
floats/doubles, |
23 // so we do nothing now. | 22 // so we do nothing now. |
24 | 23 |
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910 | 909 |
911 void SkMatrix::Identity_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[
], int count) { | 910 void SkMatrix::Identity_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[
], int count) { |
912 SkASSERT(m.getType() == 0); | 911 SkASSERT(m.getType() == 0); |
913 | 912 |
914 if (dst != src && count > 0) { | 913 if (dst != src && count > 0) { |
915 memcpy(dst, src, count * sizeof(SkPoint)); | 914 memcpy(dst, src, count * sizeof(SkPoint)); |
916 } | 915 } |
917 } | 916 } |
918 | 917 |
919 void SkMatrix::Trans_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { | 918 void SkMatrix::Trans_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { |
920 return SkOpts::matrix_translate(m,dst,src,count); | 919 SkASSERT(m.getType() <= SkMatrix::kTranslate_Mask); |
| 920 if (count > 0) { |
| 921 SkScalar tx = m.getTranslateX(); |
| 922 SkScalar ty = m.getTranslateY(); |
| 923 if (count & 1) { |
| 924 dst->fX = src->fX + tx; |
| 925 dst->fY = src->fY + ty; |
| 926 src += 1; |
| 927 dst += 1; |
| 928 } |
| 929 Sk4s trans4(tx, ty, tx, ty); |
| 930 count >>= 1; |
| 931 if (count & 1) { |
| 932 (Sk4s::Load(src) + trans4).store(dst); |
| 933 src += 2; |
| 934 dst += 2; |
| 935 } |
| 936 count >>= 1; |
| 937 for (int i = 0; i < count; ++i) { |
| 938 (Sk4s::Load(src+0) + trans4).store(dst+0); |
| 939 (Sk4s::Load(src+2) + trans4).store(dst+2); |
| 940 src += 4; |
| 941 dst += 4; |
| 942 } |
| 943 } |
921 } | 944 } |
922 | 945 |
923 void SkMatrix::Scale_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { | 946 void SkMatrix::Scale_pts(const SkMatrix& m, SkPoint dst[], const SkPoint src[],
int count) { |
924 return SkOpts::matrix_scale_translate(m,dst,src,count); | 947 SkASSERT(m.getType() <= (SkMatrix::kScale_Mask | SkMatrix::kTranslate_Mask))
; |
| 948 if (count > 0) { |
| 949 SkScalar tx = m.getTranslateX(); |
| 950 SkScalar ty = m.getTranslateY(); |
| 951 SkScalar sx = m.getScaleX(); |
| 952 SkScalar sy = m.getScaleY(); |
| 953 if (count & 1) { |
| 954 dst->fX = src->fX * sx + tx; |
| 955 dst->fY = src->fY * sy + ty; |
| 956 src += 1; |
| 957 dst += 1; |
| 958 } |
| 959 Sk4s trans4(tx, ty, tx, ty); |
| 960 Sk4s scale4(sx, sy, sx, sy); |
| 961 count >>= 1; |
| 962 if (count & 1) { |
| 963 (Sk4s::Load(src) * scale4 + trans4).store(dst); |
| 964 src += 2; |
| 965 dst += 2; |
| 966 } |
| 967 count >>= 1; |
| 968 for (int i = 0; i < count; ++i) { |
| 969 (Sk4s::Load(src+0) * scale4 + trans4).store(dst+0); |
| 970 (Sk4s::Load(src+2) * scale4 + trans4).store(dst+2); |
| 971 src += 4; |
| 972 dst += 4; |
| 973 } |
| 974 } |
925 } | 975 } |
926 | 976 |
927 void SkMatrix::Persp_pts(const SkMatrix& m, SkPoint dst[], | 977 void SkMatrix::Persp_pts(const SkMatrix& m, SkPoint dst[], |
928 const SkPoint src[], int count) { | 978 const SkPoint src[], int count) { |
929 SkASSERT(m.hasPerspective()); | 979 SkASSERT(m.hasPerspective()); |
930 | 980 |
931 if (count > 0) { | 981 if (count > 0) { |
932 do { | 982 do { |
933 SkScalar sy = src->fY; | 983 SkScalar sy = src->fY; |
934 SkScalar sx = src->fX; | 984 SkScalar sx = src->fX; |
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946 } | 996 } |
947 | 997 |
948 dst->fY = y * z; | 998 dst->fY = y * z; |
949 dst->fX = x * z; | 999 dst->fX = x * z; |
950 dst += 1; | 1000 dst += 1; |
951 } while (--count); | 1001 } while (--count); |
952 } | 1002 } |
953 } | 1003 } |
954 | 1004 |
955 void SkMatrix::Affine_vpts(const SkMatrix& m, SkPoint dst[], const SkPoint src[]
, int count) { | 1005 void SkMatrix::Affine_vpts(const SkMatrix& m, SkPoint dst[], const SkPoint src[]
, int count) { |
956 return SkOpts::matrix_affine(m,dst,src,count); | 1006 SkASSERT(m.getType() != SkMatrix::kPerspective_Mask); |
| 1007 if (count > 0) { |
| 1008 SkScalar tx = m.getTranslateX(); |
| 1009 SkScalar ty = m.getTranslateY(); |
| 1010 SkScalar sx = m.getScaleX(); |
| 1011 SkScalar sy = m.getScaleY(); |
| 1012 SkScalar kx = m.getSkewX(); |
| 1013 SkScalar ky = m.getSkewY(); |
| 1014 if (count & 1) { |
| 1015 dst->set(src->fX * sx + src->fY * kx + tx, |
| 1016 src->fX * ky + src->fY * sy + ty); |
| 1017 src += 1; |
| 1018 dst += 1; |
| 1019 } |
| 1020 Sk4s trans4(tx, ty, tx, ty); |
| 1021 Sk4s scale4(sx, sy, sx, sy); |
| 1022 Sk4s skew4(kx, ky, kx, ky); // applied to swizzle of src4 |
| 1023 count >>= 1; |
| 1024 for (int i = 0; i < count; ++i) { |
| 1025 Sk4s src4 = Sk4s::Load(src); |
| 1026 Sk4s swz4 = SkNx_shuffle<1,0,3,2>(src4); // y0 x0, y1 x1 |
| 1027 (src4 * scale4 + swz4 * skew4 + trans4).store(dst); |
| 1028 src += 2; |
| 1029 dst += 2; |
| 1030 } |
| 1031 } |
957 } | 1032 } |
958 | 1033 |
959 const SkMatrix::MapPtsProc SkMatrix::gMapPtsProcs[] = { | 1034 const SkMatrix::MapPtsProc SkMatrix::gMapPtsProcs[] = { |
960 SkMatrix::Identity_pts, SkMatrix::Trans_pts, | 1035 SkMatrix::Identity_pts, SkMatrix::Trans_pts, |
961 SkMatrix::Scale_pts, SkMatrix::Scale_pts, | 1036 SkMatrix::Scale_pts, SkMatrix::Scale_pts, |
962 SkMatrix::Affine_vpts, SkMatrix::Affine_vpts, | 1037 SkMatrix::Affine_vpts, SkMatrix::Affine_vpts, |
963 SkMatrix::Affine_vpts, SkMatrix::Affine_vpts, | 1038 SkMatrix::Affine_vpts, SkMatrix::Affine_vpts, |
964 // repeat the persp proc 8 times | 1039 // repeat the persp proc 8 times |
965 SkMatrix::Persp_pts, SkMatrix::Persp_pts, | 1040 SkMatrix::Persp_pts, SkMatrix::Persp_pts, |
966 SkMatrix::Persp_pts, SkMatrix::Persp_pts, | 1041 SkMatrix::Persp_pts, SkMatrix::Persp_pts, |
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1782 const SkScalar m10 = -m01; | 1857 const SkScalar m10 = -m01; |
1783 const SkScalar m11 = m00; | 1858 const SkScalar m11 = m00; |
1784 const SkScalar m12 = fTy; | 1859 const SkScalar m12 = fTy; |
1785 | 1860 |
1786 quad[0].set(m02, m12); | 1861 quad[0].set(m02, m12); |
1787 quad[1].set(m00 * width + m02, m10 * width + m12); | 1862 quad[1].set(m00 * width + m02, m10 * width + m12); |
1788 quad[2].set(m00 * width + m01 * height + m02, m10 * width + m11 * height + m
12); | 1863 quad[2].set(m00 * width + m01 * height + m02, m10 * width + m11 * height + m
12); |
1789 quad[3].set(m01 * height + m02, m11 * height + m12); | 1864 quad[3].set(m01 * height + m02, m11 * height + m12); |
1790 #endif | 1865 #endif |
1791 } | 1866 } |
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