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 SkNx_sse_DEFINED
9 #define SkNx_sse_DEFINED
10
11 #include "include/core/SkTypes.h"
12
13 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
14 #include <smmintrin.h>
15 #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
16 #include <tmmintrin.h>
17 #else
18 #include <emmintrin.h>
19 #endif
20
21 // This file may assume <= SSE2, but must check SK_CPU_SSE_LEVEL for anything more recent.
22 // If you do, make sure this is in a static inline function... anywhere else risks violating ODR.
23
24 namespace { // NOLINT(google-build-namespaces)
25
26 // Emulate _mm_floor_ps() with SSE2:
27 // - roundtrip through integers via truncation
28 // - subtract 1 if that's too big (possible for negative values).
29 // This restricts the domain of our inputs to a maximum somehwere around 2^31.
30 // Seems plenty big.
emulate_mm_floor_ps(__m128 v)31 AI static __m128 emulate_mm_floor_ps(__m128 v) {
32 __m128 roundtrip = _mm_cvtepi32_ps(_mm_cvttps_epi32(v));
33 __m128 too_big = _mm_cmpgt_ps(roundtrip, v);
34 return _mm_sub_ps(roundtrip, _mm_and_ps(too_big, _mm_set1_ps(1.0f)));
35 }
36
37 template <>
38 class SkNx<2, float> {
39 public:
SkNx(const __m128 & vec)40 AI SkNx(const __m128& vec) : fVec(vec) {}
41
SkNx()42 AI SkNx() {}
SkNx(float val)43 AI SkNx(float val) : fVec(_mm_set1_ps(val)) {}
Load(const void * ptr)44 AI static SkNx Load(const void* ptr) {
45 return _mm_castsi128_ps(_mm_loadl_epi64((const __m128i*)ptr));
46 }
SkNx(float a,float b)47 AI SkNx(float a, float b) : fVec(_mm_setr_ps(a,b,0,0)) {}
48
store(void * ptr)49 AI void store(void* ptr) const { _mm_storel_pi((__m64*)ptr, fVec); }
50
Load2(const void * ptr,SkNx * x,SkNx * y)51 AI static void Load2(const void* ptr, SkNx* x, SkNx* y) {
52 const float* m = (const float*)ptr;
53 *x = SkNx{m[0], m[2]};
54 *y = SkNx{m[1], m[3]};
55 }
56
Store2(void * dst,const SkNx & a,const SkNx & b)57 AI static void Store2(void* dst, const SkNx& a, const SkNx& b) {
58 auto vals = _mm_unpacklo_ps(a.fVec, b.fVec);
59 _mm_storeu_ps((float*)dst, vals);
60 }
61
Store3(void * dst,const SkNx & a,const SkNx & b,const SkNx & c)62 AI static void Store3(void* dst, const SkNx& a, const SkNx& b, const SkNx& c) {
63 auto lo = _mm_setr_ps(a[0], b[0], c[0], a[1]),
64 hi = _mm_setr_ps(b[1], c[1], 0, 0);
65 _mm_storeu_ps((float*)dst, lo);
66 _mm_storel_pi(((__m64*)dst) + 2, hi);
67 }
68
Store4(void * dst,const SkNx & a,const SkNx & b,const SkNx & c,const SkNx & d)69 AI static void Store4(void* dst, const SkNx& a, const SkNx& b, const SkNx& c, const SkNx& d) {
70 auto lo = _mm_setr_ps(a[0], b[0], c[0], d[0]),
71 hi = _mm_setr_ps(a[1], b[1], c[1], d[1]);
72 _mm_storeu_ps((float*)dst, lo);
73 _mm_storeu_ps(((float*)dst) + 4, hi);
74 }
75
76 AI SkNx operator - () const { return _mm_xor_ps(_mm_set1_ps(-0.0f), fVec); }
77
78 AI SkNx operator + (const SkNx& o) const { return _mm_add_ps(fVec, o.fVec); }
79 AI SkNx operator - (const SkNx& o) const { return _mm_sub_ps(fVec, o.fVec); }
80 AI SkNx operator * (const SkNx& o) const { return _mm_mul_ps(fVec, o.fVec); }
81 AI SkNx operator / (const SkNx& o) const { return _mm_div_ps(fVec, o.fVec); }
82
83 AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_ps (fVec, o.fVec); }
84 AI SkNx operator != (const SkNx& o) const { return _mm_cmpneq_ps(fVec, o.fVec); }
85 AI SkNx operator < (const SkNx& o) const { return _mm_cmplt_ps (fVec, o.fVec); }
86 AI SkNx operator > (const SkNx& o) const { return _mm_cmpgt_ps (fVec, o.fVec); }
87 AI SkNx operator <= (const SkNx& o) const { return _mm_cmple_ps (fVec, o.fVec); }
88 AI SkNx operator >= (const SkNx& o) const { return _mm_cmpge_ps (fVec, o.fVec); }
89
Min(const SkNx & l,const SkNx & r)90 AI static SkNx Min(const SkNx& l, const SkNx& r) { return _mm_min_ps(l.fVec, r.fVec); }
Max(const SkNx & l,const SkNx & r)91 AI static SkNx Max(const SkNx& l, const SkNx& r) { return _mm_max_ps(l.fVec, r.fVec); }
92
abs()93 AI SkNx abs() const { return _mm_andnot_ps(_mm_set1_ps(-0.0f), fVec); }
floor()94 AI SkNx floor() const {
95 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
96 return _mm_floor_ps(fVec);
97 #else
98 return emulate_mm_floor_ps(fVec);
99 #endif
100 }
101
sqrt()102 AI SkNx sqrt() const { return _mm_sqrt_ps (fVec); }
103
104 AI float operator[](int k) const {
105 SkASSERT(0 <= k && k < 2);
106 union { __m128 v; float fs[4]; } pun = {fVec};
107 return pun.fs[k&1];
108 }
109
allTrue()110 AI bool allTrue() const { return 0b11 == (_mm_movemask_ps(fVec) & 0b11); }
anyTrue()111 AI bool anyTrue() const { return 0b00 != (_mm_movemask_ps(fVec) & 0b11); }
112
thenElse(const SkNx & t,const SkNx & e)113 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
114 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
115 return _mm_blendv_ps(e.fVec, t.fVec, fVec);
116 #else
117 return _mm_or_ps(_mm_and_ps (fVec, t.fVec),
118 _mm_andnot_ps(fVec, e.fVec));
119 #endif
120 }
121
122 __m128 fVec;
123 };
124
125 template <>
126 class SkNx<4, float> {
127 public:
SkNx(const __m128 & vec)128 AI SkNx(const __m128& vec) : fVec(vec) {}
129
SkNx()130 AI SkNx() {}
SkNx(float val)131 AI SkNx(float val) : fVec( _mm_set1_ps(val) ) {}
SkNx(float a,float b,float c,float d)132 AI SkNx(float a, float b, float c, float d) : fVec(_mm_setr_ps(a,b,c,d)) {}
133
Load(const void * ptr)134 AI static SkNx Load(const void* ptr) { return _mm_loadu_ps((const float*)ptr); }
store(void * ptr)135 AI void store(void* ptr) const { _mm_storeu_ps((float*)ptr, fVec); }
136
Load2(const void * ptr,SkNx * x,SkNx * y)137 AI static void Load2(const void* ptr, SkNx* x, SkNx* y) {
138 SkNx lo = SkNx::Load((const float*)ptr+0),
139 hi = SkNx::Load((const float*)ptr+4);
140 *x = SkNx{lo[0], lo[2], hi[0], hi[2]};
141 *y = SkNx{lo[1], lo[3], hi[1], hi[3]};
142 }
143
Load4(const void * ptr,SkNx * r,SkNx * g,SkNx * b,SkNx * a)144 AI static void Load4(const void* ptr, SkNx* r, SkNx* g, SkNx* b, SkNx* a) {
145 __m128 v0 = _mm_loadu_ps(((float*)ptr) + 0),
146 v1 = _mm_loadu_ps(((float*)ptr) + 4),
147 v2 = _mm_loadu_ps(((float*)ptr) + 8),
148 v3 = _mm_loadu_ps(((float*)ptr) + 12);
149 _MM_TRANSPOSE4_PS(v0, v1, v2, v3);
150 *r = v0;
151 *g = v1;
152 *b = v2;
153 *a = v3;
154 }
Store4(void * dst,const SkNx & r,const SkNx & g,const SkNx & b,const SkNx & a)155 AI static void Store4(void* dst, const SkNx& r, const SkNx& g, const SkNx& b, const SkNx& a) {
156 __m128 v0 = r.fVec,
157 v1 = g.fVec,
158 v2 = b.fVec,
159 v3 = a.fVec;
160 _MM_TRANSPOSE4_PS(v0, v1, v2, v3);
161 _mm_storeu_ps(((float*) dst) + 0, v0);
162 _mm_storeu_ps(((float*) dst) + 4, v1);
163 _mm_storeu_ps(((float*) dst) + 8, v2);
164 _mm_storeu_ps(((float*) dst) + 12, v3);
165 }
166
167 AI SkNx operator - () const { return _mm_xor_ps(_mm_set1_ps(-0.0f), fVec); }
168
169 AI SkNx operator + (const SkNx& o) const { return _mm_add_ps(fVec, o.fVec); }
170 AI SkNx operator - (const SkNx& o) const { return _mm_sub_ps(fVec, o.fVec); }
171 AI SkNx operator * (const SkNx& o) const { return _mm_mul_ps(fVec, o.fVec); }
172 AI SkNx operator / (const SkNx& o) const { return _mm_div_ps(fVec, o.fVec); }
173
174 AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_ps (fVec, o.fVec); }
175 AI SkNx operator != (const SkNx& o) const { return _mm_cmpneq_ps(fVec, o.fVec); }
176 AI SkNx operator < (const SkNx& o) const { return _mm_cmplt_ps (fVec, o.fVec); }
177 AI SkNx operator > (const SkNx& o) const { return _mm_cmpgt_ps (fVec, o.fVec); }
178 AI SkNx operator <= (const SkNx& o) const { return _mm_cmple_ps (fVec, o.fVec); }
179 AI SkNx operator >= (const SkNx& o) const { return _mm_cmpge_ps (fVec, o.fVec); }
180
Min(const SkNx & l,const SkNx & r)181 AI static SkNx Min(const SkNx& l, const SkNx& r) { return _mm_min_ps(l.fVec, r.fVec); }
Max(const SkNx & l,const SkNx & r)182 AI static SkNx Max(const SkNx& l, const SkNx& r) { return _mm_max_ps(l.fVec, r.fVec); }
183
abs()184 AI SkNx abs() const { return _mm_andnot_ps(_mm_set1_ps(-0.0f), fVec); }
floor()185 AI SkNx floor() const {
186 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
187 return _mm_floor_ps(fVec);
188 #else
189 return emulate_mm_floor_ps(fVec);
190 #endif
191 }
192
sqrt()193 AI SkNx sqrt() const { return _mm_sqrt_ps (fVec); }
194
195 AI float operator[](int k) const {
196 SkASSERT(0 <= k && k < 4);
197 union { __m128 v; float fs[4]; } pun = {fVec};
198 return pun.fs[k&3];
199 }
200
min()201 AI float min() const {
202 SkNx min = Min(*this, _mm_shuffle_ps(fVec, fVec, _MM_SHUFFLE(2,3,0,1)));
203 min = Min(min, _mm_shuffle_ps(min.fVec, min.fVec, _MM_SHUFFLE(0,1,2,3)));
204 return min[0];
205 }
206
max()207 AI float max() const {
208 SkNx max = Max(*this, _mm_shuffle_ps(fVec, fVec, _MM_SHUFFLE(2,3,0,1)));
209 max = Max(max, _mm_shuffle_ps(max.fVec, max.fVec, _MM_SHUFFLE(0,1,2,3)));
210 return max[0];
211 }
212
allTrue()213 AI bool allTrue() const { return 0b1111 == _mm_movemask_ps(fVec); }
anyTrue()214 AI bool anyTrue() const { return 0b0000 != _mm_movemask_ps(fVec); }
215
thenElse(const SkNx & t,const SkNx & e)216 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
217 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
218 return _mm_blendv_ps(e.fVec, t.fVec, fVec);
219 #else
220 return _mm_or_ps(_mm_and_ps (fVec, t.fVec),
221 _mm_andnot_ps(fVec, e.fVec));
222 #endif
223 }
224
225 __m128 fVec;
226 };
227
mullo32(__m128i a,__m128i b)228 AI static __m128i mullo32(__m128i a, __m128i b) {
229 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
230 return _mm_mullo_epi32(a, b);
231 #else
232 __m128i mul20 = _mm_mul_epu32(a, b),
233 mul31 = _mm_mul_epu32(_mm_srli_si128(a, 4), _mm_srli_si128(b, 4));
234 return _mm_unpacklo_epi32(_mm_shuffle_epi32(mul20, _MM_SHUFFLE(0,0,2,0)),
235 _mm_shuffle_epi32(mul31, _MM_SHUFFLE(0,0,2,0)));
236 #endif
237 }
238
239 template <>
240 class SkNx<4, int32_t> {
241 public:
SkNx(const __m128i & vec)242 AI SkNx(const __m128i& vec) : fVec(vec) {}
243
SkNx()244 AI SkNx() {}
SkNx(int32_t val)245 AI SkNx(int32_t val) : fVec(_mm_set1_epi32(val)) {}
Load(const void * ptr)246 AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
SkNx(int32_t a,int32_t b,int32_t c,int32_t d)247 AI SkNx(int32_t a, int32_t b, int32_t c, int32_t d) : fVec(_mm_setr_epi32(a,b,c,d)) {}
248
store(void * ptr)249 AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
250
251 AI SkNx operator + (const SkNx& o) const { return _mm_add_epi32(fVec, o.fVec); }
252 AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi32(fVec, o.fVec); }
253 AI SkNx operator * (const SkNx& o) const { return mullo32(fVec, o.fVec); }
254
255 AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
256 AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
257 AI SkNx operator ^ (const SkNx& o) const { return _mm_xor_si128(fVec, o.fVec); }
258
259 AI SkNx operator << (int bits) const { return _mm_slli_epi32(fVec, bits); }
260 AI SkNx operator >> (int bits) const { return _mm_srai_epi32(fVec, bits); }
261
262 AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_epi32 (fVec, o.fVec); }
263 AI SkNx operator < (const SkNx& o) const { return _mm_cmplt_epi32 (fVec, o.fVec); }
264 AI SkNx operator > (const SkNx& o) const { return _mm_cmpgt_epi32 (fVec, o.fVec); }
265
266 AI int32_t operator[](int k) const {
267 SkASSERT(0 <= k && k < 4);
268 union { __m128i v; int32_t is[4]; } pun = {fVec};
269 return pun.is[k&3];
270 }
271
thenElse(const SkNx & t,const SkNx & e)272 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
273 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
274 return _mm_blendv_epi8(e.fVec, t.fVec, fVec);
275 #else
276 return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
277 _mm_andnot_si128(fVec, e.fVec));
278 #endif
279 }
280
abs()281 AI SkNx abs() const {
282 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
283 return _mm_abs_epi32(fVec);
284 #else
285 SkNx mask = (*this) >> 31;
286 return (mask ^ (*this)) - mask;
287 #endif
288 }
289
Min(const SkNx & x,const SkNx & y)290 AI static SkNx Min(const SkNx& x, const SkNx& y) {
291 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
292 return _mm_min_epi32(x.fVec, y.fVec);
293 #else
294 return (x < y).thenElse(x, y);
295 #endif
296 }
297
Max(const SkNx & x,const SkNx & y)298 AI static SkNx Max(const SkNx& x, const SkNx& y) {
299 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
300 return _mm_max_epi32(x.fVec, y.fVec);
301 #else
302 return (x > y).thenElse(x, y);
303 #endif
304 }
305
306 __m128i fVec;
307 };
308
309 template <>
310 class SkNx<2, uint32_t> {
311 public:
SkNx(const __m128i & vec)312 AI SkNx(const __m128i& vec) : fVec(vec) {}
313
SkNx()314 AI SkNx() {}
SkNx(uint32_t val)315 AI SkNx(uint32_t val) : fVec(_mm_set1_epi32((int)val)) {}
Load(const void * ptr)316 AI static SkNx Load(const void* ptr) { return _mm_loadl_epi64((const __m128i*)ptr); }
SkNx(uint32_t a,uint32_t b)317 AI SkNx(uint32_t a, uint32_t b) : fVec(_mm_setr_epi32((int)a,(int)b,0,0)) {}
318
store(void * ptr)319 AI void store(void* ptr) const { _mm_storel_epi64((__m128i*)ptr, fVec); }
320
321 AI SkNx operator + (const SkNx& o) const { return _mm_add_epi32(fVec, o.fVec); }
322 AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi32(fVec, o.fVec); }
323 AI SkNx operator * (const SkNx& o) const { return mullo32(fVec, o.fVec); }
324
325 AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
326 AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
327 AI SkNx operator ^ (const SkNx& o) const { return _mm_xor_si128(fVec, o.fVec); }
328
329 AI SkNx operator << (int bits) const { return _mm_slli_epi32(fVec, bits); }
330 AI SkNx operator >> (int bits) const { return _mm_srli_epi32(fVec, bits); }
331
332 AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_epi32 (fVec, o.fVec); }
333 AI SkNx operator != (const SkNx& o) const { return (*this == o) ^ 0xffffffff; }
334 // operator < and > take a little extra fiddling to make work for unsigned ints.
335
336 AI uint32_t operator[](int k) const {
337 SkASSERT(0 <= k && k < 2);
338 union { __m128i v; uint32_t us[4]; } pun = {fVec};
339 return pun.us[k&1];
340 }
341
thenElse(const SkNx & t,const SkNx & e)342 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
343 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
344 return _mm_blendv_epi8(e.fVec, t.fVec, fVec);
345 #else
346 return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
347 _mm_andnot_si128(fVec, e.fVec));
348 #endif
349 }
350
allTrue()351 AI bool allTrue() const { return 0xff == (_mm_movemask_epi8(fVec) & 0xff); }
352
353 __m128i fVec;
354 };
355
356 template <>
357 class SkNx<4, uint32_t> {
358 public:
SkNx(const __m128i & vec)359 AI SkNx(const __m128i& vec) : fVec(vec) {}
360
SkNx()361 AI SkNx() {}
SkNx(uint32_t val)362 AI SkNx(uint32_t val) : fVec(_mm_set1_epi32((int)val)) {}
Load(const void * ptr)363 AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
SkNx(uint32_t a,uint32_t b,uint32_t c,uint32_t d)364 AI SkNx(uint32_t a, uint32_t b, uint32_t c, uint32_t d)
365 : fVec(_mm_setr_epi32((int)a,(int)b,(int)c,(int)d)) {}
366
store(void * ptr)367 AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
368
369 AI SkNx operator + (const SkNx& o) const { return _mm_add_epi32(fVec, o.fVec); }
370 AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi32(fVec, o.fVec); }
371 AI SkNx operator * (const SkNx& o) const { return mullo32(fVec, o.fVec); }
372
373 AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
374 AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
375 AI SkNx operator ^ (const SkNx& o) const { return _mm_xor_si128(fVec, o.fVec); }
376
377 AI SkNx operator << (int bits) const { return _mm_slli_epi32(fVec, bits); }
378 AI SkNx operator >> (int bits) const { return _mm_srli_epi32(fVec, bits); }
379
380 AI SkNx operator == (const SkNx& o) const { return _mm_cmpeq_epi32 (fVec, o.fVec); }
381 AI SkNx operator != (const SkNx& o) const { return (*this == o) ^ 0xffffffff; }
382
383 // operator < and > take a little extra fiddling to make work for unsigned ints.
384
385 AI uint32_t operator[](int k) const {
386 SkASSERT(0 <= k && k < 4);
387 union { __m128i v; uint32_t us[4]; } pun = {fVec};
388 return pun.us[k&3];
389 }
390
thenElse(const SkNx & t,const SkNx & e)391 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
392 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
393 return _mm_blendv_epi8(e.fVec, t.fVec, fVec);
394 #else
395 return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
396 _mm_andnot_si128(fVec, e.fVec));
397 #endif
398 }
399
mulHi(SkNx m)400 AI SkNx mulHi(SkNx m) const {
401 SkNx v20{_mm_mul_epu32(m.fVec, fVec)};
402 SkNx v31{_mm_mul_epu32(_mm_srli_si128(m.fVec, 4), _mm_srli_si128(fVec, 4))};
403
404 return SkNx{v20[1], v31[1], v20[3], v31[3]};
405 }
406
407 __m128i fVec;
408 };
409
410 template <>
411 class SkNx<4, uint16_t> {
412 public:
SkNx(const __m128i & vec)413 AI SkNx(const __m128i& vec) : fVec(vec) {}
414
SkNx()415 AI SkNx() {}
SkNx(uint16_t val)416 AI SkNx(uint16_t val) : fVec(_mm_set1_epi16((short)val)) {}
SkNx(uint16_t a,uint16_t b,uint16_t c,uint16_t d)417 AI SkNx(uint16_t a, uint16_t b, uint16_t c, uint16_t d)
418 : fVec(_mm_setr_epi16((short)a,(short)b,(short)c,(short)d,0,0,0,0)) {}
419
Load(const void * ptr)420 AI static SkNx Load(const void* ptr) { return _mm_loadl_epi64((const __m128i*)ptr); }
store(void * ptr)421 AI void store(void* ptr) const { _mm_storel_epi64((__m128i*)ptr, fVec); }
422
Load4(const void * ptr,SkNx * r,SkNx * g,SkNx * b,SkNx * a)423 AI static void Load4(const void* ptr, SkNx* r, SkNx* g, SkNx* b, SkNx* a) {
424 __m128i lo = _mm_loadu_si128(((__m128i*)ptr) + 0),
425 hi = _mm_loadu_si128(((__m128i*)ptr) + 1);
426 __m128i even = _mm_unpacklo_epi16(lo, hi), // r0 r2 g0 g2 b0 b2 a0 a2
427 odd = _mm_unpackhi_epi16(lo, hi); // r1 r3 ...
428 __m128i rg = _mm_unpacklo_epi16(even, odd), // r0 r1 r2 r3 g0 g1 g2 g3
429 ba = _mm_unpackhi_epi16(even, odd); // b0 b1 ... a0 a1 ...
430 *r = rg;
431 *g = _mm_srli_si128(rg, 8);
432 *b = ba;
433 *a = _mm_srli_si128(ba, 8);
434 }
Load3(const void * ptr,SkNx * r,SkNx * g,SkNx * b)435 AI static void Load3(const void* ptr, SkNx* r, SkNx* g, SkNx* b) {
436 // The idea here is to get 4 vectors that are R G B _ _ _ _ _.
437 // The second load is at a funny location to make sure we don't read past
438 // the bounds of memory. This is fine, we just need to shift it a little bit.
439 const uint8_t* ptr8 = (const uint8_t*) ptr;
440 __m128i rgb0 = _mm_loadu_si128((const __m128i*) (ptr8 + 0));
441 __m128i rgb1 = _mm_srli_si128(rgb0, 3*2);
442 __m128i rgb2 = _mm_srli_si128(_mm_loadu_si128((const __m128i*) (ptr8 + 4*2)), 2*2);
443 __m128i rgb3 = _mm_srli_si128(rgb2, 3*2);
444
445 __m128i rrggbb01 = _mm_unpacklo_epi16(rgb0, rgb1);
446 __m128i rrggbb23 = _mm_unpacklo_epi16(rgb2, rgb3);
447 *r = _mm_unpacklo_epi32(rrggbb01, rrggbb23);
448 *g = _mm_srli_si128(r->fVec, 4*2);
449 *b = _mm_unpackhi_epi32(rrggbb01, rrggbb23);
450 }
Store4(void * dst,const SkNx & r,const SkNx & g,const SkNx & b,const SkNx & a)451 AI static void Store4(void* dst, const SkNx& r, const SkNx& g, const SkNx& b, const SkNx& a) {
452 __m128i rg = _mm_unpacklo_epi16(r.fVec, g.fVec);
453 __m128i ba = _mm_unpacklo_epi16(b.fVec, a.fVec);
454 __m128i lo = _mm_unpacklo_epi32(rg, ba);
455 __m128i hi = _mm_unpackhi_epi32(rg, ba);
456 _mm_storeu_si128(((__m128i*) dst) + 0, lo);
457 _mm_storeu_si128(((__m128i*) dst) + 1, hi);
458 }
459
460 AI SkNx operator + (const SkNx& o) const { return _mm_add_epi16(fVec, o.fVec); }
461 AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi16(fVec, o.fVec); }
462 AI SkNx operator * (const SkNx& o) const { return _mm_mullo_epi16(fVec, o.fVec); }
463 AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
464 AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
465
466 AI SkNx operator << (int bits) const { return _mm_slli_epi16(fVec, bits); }
467 AI SkNx operator >> (int bits) const { return _mm_srli_epi16(fVec, bits); }
468
469 AI uint16_t operator[](int k) const {
470 SkASSERT(0 <= k && k < 4);
471 union { __m128i v; uint16_t us[8]; } pun = {fVec};
472 return pun.us[k&3];
473 }
474
475 __m128i fVec;
476 };
477
478 template <>
479 class SkNx<8, uint16_t> {
480 public:
SkNx(const __m128i & vec)481 AI SkNx(const __m128i& vec) : fVec(vec) {}
482
SkNx()483 AI SkNx() {}
SkNx(uint16_t val)484 AI SkNx(uint16_t val) : fVec(_mm_set1_epi16((short)val)) {}
SkNx(uint16_t a,uint16_t b,uint16_t c,uint16_t d,uint16_t e,uint16_t f,uint16_t g,uint16_t h)485 AI SkNx(uint16_t a, uint16_t b, uint16_t c, uint16_t d,
486 uint16_t e, uint16_t f, uint16_t g, uint16_t h)
487 : fVec(_mm_setr_epi16((short)a,(short)b,(short)c,(short)d,
488 (short)e,(short)f,(short)g,(short)h)) {}
489
Load(const void * ptr)490 AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
store(void * ptr)491 AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
492
Load4(const void * ptr,SkNx * r,SkNx * g,SkNx * b,SkNx * a)493 AI static void Load4(const void* ptr, SkNx* r, SkNx* g, SkNx* b, SkNx* a) {
494 __m128i _01 = _mm_loadu_si128(((__m128i*)ptr) + 0),
495 _23 = _mm_loadu_si128(((__m128i*)ptr) + 1),
496 _45 = _mm_loadu_si128(((__m128i*)ptr) + 2),
497 _67 = _mm_loadu_si128(((__m128i*)ptr) + 3);
498
499 __m128i _02 = _mm_unpacklo_epi16(_01, _23), // r0 r2 g0 g2 b0 b2 a0 a2
500 _13 = _mm_unpackhi_epi16(_01, _23), // r1 r3 g1 g3 b1 b3 a1 a3
501 _46 = _mm_unpacklo_epi16(_45, _67),
502 _57 = _mm_unpackhi_epi16(_45, _67);
503
504 __m128i rg0123 = _mm_unpacklo_epi16(_02, _13), // r0 r1 r2 r3 g0 g1 g2 g3
505 ba0123 = _mm_unpackhi_epi16(_02, _13), // b0 b1 b2 b3 a0 a1 a2 a3
506 rg4567 = _mm_unpacklo_epi16(_46, _57),
507 ba4567 = _mm_unpackhi_epi16(_46, _57);
508
509 *r = _mm_unpacklo_epi64(rg0123, rg4567);
510 *g = _mm_unpackhi_epi64(rg0123, rg4567);
511 *b = _mm_unpacklo_epi64(ba0123, ba4567);
512 *a = _mm_unpackhi_epi64(ba0123, ba4567);
513 }
Load3(const void * ptr,SkNx * r,SkNx * g,SkNx * b)514 AI static void Load3(const void* ptr, SkNx* r, SkNx* g, SkNx* b) {
515 const uint8_t* ptr8 = (const uint8_t*) ptr;
516 __m128i rgb0 = _mm_loadu_si128((const __m128i*) (ptr8 + 0*2));
517 __m128i rgb1 = _mm_srli_si128(rgb0, 3*2);
518 __m128i rgb2 = _mm_loadu_si128((const __m128i*) (ptr8 + 6*2));
519 __m128i rgb3 = _mm_srli_si128(rgb2, 3*2);
520 __m128i rgb4 = _mm_loadu_si128((const __m128i*) (ptr8 + 12*2));
521 __m128i rgb5 = _mm_srli_si128(rgb4, 3*2);
522 __m128i rgb6 = _mm_srli_si128(_mm_loadu_si128((const __m128i*) (ptr8 + 16*2)), 2*2);
523 __m128i rgb7 = _mm_srli_si128(rgb6, 3*2);
524
525 __m128i rgb01 = _mm_unpacklo_epi16(rgb0, rgb1);
526 __m128i rgb23 = _mm_unpacklo_epi16(rgb2, rgb3);
527 __m128i rgb45 = _mm_unpacklo_epi16(rgb4, rgb5);
528 __m128i rgb67 = _mm_unpacklo_epi16(rgb6, rgb7);
529
530 __m128i rg03 = _mm_unpacklo_epi32(rgb01, rgb23);
531 __m128i bx03 = _mm_unpackhi_epi32(rgb01, rgb23);
532 __m128i rg47 = _mm_unpacklo_epi32(rgb45, rgb67);
533 __m128i bx47 = _mm_unpackhi_epi32(rgb45, rgb67);
534
535 *r = _mm_unpacklo_epi64(rg03, rg47);
536 *g = _mm_unpackhi_epi64(rg03, rg47);
537 *b = _mm_unpacklo_epi64(bx03, bx47);
538 }
Store4(void * ptr,const SkNx & r,const SkNx & g,const SkNx & b,const SkNx & a)539 AI static void Store4(void* ptr, const SkNx& r, const SkNx& g, const SkNx& b, const SkNx& a) {
540 __m128i rg0123 = _mm_unpacklo_epi16(r.fVec, g.fVec), // r0 g0 r1 g1 r2 g2 r3 g3
541 rg4567 = _mm_unpackhi_epi16(r.fVec, g.fVec), // r4 g4 r5 g5 r6 g6 r7 g7
542 ba0123 = _mm_unpacklo_epi16(b.fVec, a.fVec),
543 ba4567 = _mm_unpackhi_epi16(b.fVec, a.fVec);
544
545 _mm_storeu_si128((__m128i*)ptr + 0, _mm_unpacklo_epi32(rg0123, ba0123));
546 _mm_storeu_si128((__m128i*)ptr + 1, _mm_unpackhi_epi32(rg0123, ba0123));
547 _mm_storeu_si128((__m128i*)ptr + 2, _mm_unpacklo_epi32(rg4567, ba4567));
548 _mm_storeu_si128((__m128i*)ptr + 3, _mm_unpackhi_epi32(rg4567, ba4567));
549 }
550
551 AI SkNx operator + (const SkNx& o) const { return _mm_add_epi16(fVec, o.fVec); }
552 AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi16(fVec, o.fVec); }
553 AI SkNx operator * (const SkNx& o) const { return _mm_mullo_epi16(fVec, o.fVec); }
554 AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
555 AI SkNx operator | (const SkNx& o) const { return _mm_or_si128(fVec, o.fVec); }
556
557 AI SkNx operator << (int bits) const { return _mm_slli_epi16(fVec, bits); }
558 AI SkNx operator >> (int bits) const { return _mm_srli_epi16(fVec, bits); }
559
Min(const SkNx & a,const SkNx & b)560 AI static SkNx Min(const SkNx& a, const SkNx& b) {
561 // No unsigned _mm_min_epu16, so we'll shift into a space where we can use the
562 // signed version, _mm_min_epi16, then shift back.
563 const uint16_t top = 0x8000; // Keep this separate from _mm_set1_epi16 or MSVC will whine.
564 const __m128i top_8x = _mm_set1_epi16((short)top);
565 return _mm_add_epi8(top_8x, _mm_min_epi16(_mm_sub_epi8(a.fVec, top_8x),
566 _mm_sub_epi8(b.fVec, top_8x)));
567 }
568
mulHi(const SkNx & m)569 AI SkNx mulHi(const SkNx& m) const {
570 return _mm_mulhi_epu16(fVec, m.fVec);
571 }
572
thenElse(const SkNx & t,const SkNx & e)573 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
574 return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
575 _mm_andnot_si128(fVec, e.fVec));
576 }
577
578 AI uint16_t operator[](int k) const {
579 SkASSERT(0 <= k && k < 8);
580 union { __m128i v; uint16_t us[8]; } pun = {fVec};
581 return pun.us[k&7];
582 }
583
584 __m128i fVec;
585 };
586
587 template <>
588 class SkNx<4, uint8_t> {
589 public:
SkNx()590 AI SkNx() {}
SkNx(const __m128i & vec)591 AI SkNx(const __m128i& vec) : fVec(vec) {}
SkNx(uint8_t a,uint8_t b,uint8_t c,uint8_t d)592 AI SkNx(uint8_t a, uint8_t b, uint8_t c, uint8_t d)
593 : fVec(_mm_setr_epi8((char)a,(char)b,(char)c,(char)d, 0,0,0,0, 0,0,0,0, 0,0,0,0)) {}
594
Load(const void * ptr)595 AI static SkNx Load(const void* ptr) { return _mm_cvtsi32_si128(*(const int*)ptr); }
store(void * ptr)596 AI void store(void* ptr) const { *(int*)ptr = _mm_cvtsi128_si32(fVec); }
597
598 AI uint8_t operator[](int k) const {
599 SkASSERT(0 <= k && k < 4);
600 union { __m128i v; uint8_t us[16]; } pun = {fVec};
601 return pun.us[k&3];
602 }
603
604 // TODO as needed
605
606 __m128i fVec;
607 };
608
609 template <>
610 class SkNx<8, uint8_t> {
611 public:
SkNx(const __m128i & vec)612 AI SkNx(const __m128i& vec) : fVec(vec) {}
613
SkNx()614 AI SkNx() {}
SkNx(uint8_t val)615 AI SkNx(uint8_t val) : fVec(_mm_set1_epi8((char)val)) {}
Load(const void * ptr)616 AI static SkNx Load(const void* ptr) { return _mm_loadl_epi64((const __m128i*)ptr); }
SkNx(uint8_t a,uint8_t b,uint8_t c,uint8_t d,uint8_t e,uint8_t f,uint8_t g,uint8_t h)617 AI SkNx(uint8_t a, uint8_t b, uint8_t c, uint8_t d,
618 uint8_t e, uint8_t f, uint8_t g, uint8_t h)
619 : fVec(_mm_setr_epi8((char)a,(char)b,(char)c,(char)d,
620 (char)e,(char)f,(char)g,(char)h,
621 0,0,0,0, 0,0,0,0)) {}
622
store(void * ptr)623 AI void store(void* ptr) const {_mm_storel_epi64((__m128i*)ptr, fVec);}
624
saturatedAdd(const SkNx & o)625 AI SkNx saturatedAdd(const SkNx& o) const { return _mm_adds_epu8(fVec, o.fVec); }
626
627 AI SkNx operator + (const SkNx& o) const { return _mm_add_epi8(fVec, o.fVec); }
628 AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi8(fVec, o.fVec); }
629
Min(const SkNx & a,const SkNx & b)630 AI static SkNx Min(const SkNx& a, const SkNx& b) { return _mm_min_epu8(a.fVec, b.fVec); }
631 AI SkNx operator < (const SkNx& o) const {
632 // There's no unsigned _mm_cmplt_epu8, so we flip the sign bits then use a signed compare.
633 auto flip = _mm_set1_epi8(char(0x80));
634 return _mm_cmplt_epi8(_mm_xor_si128(flip, fVec), _mm_xor_si128(flip, o.fVec));
635 }
636
637 AI uint8_t operator[](int k) const {
638 SkASSERT(0 <= k && k < 16);
639 union { __m128i v; uint8_t us[16]; } pun = {fVec};
640 return pun.us[k&15];
641 }
642
thenElse(const SkNx & t,const SkNx & e)643 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
644 return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
645 _mm_andnot_si128(fVec, e.fVec));
646 }
647
648 __m128i fVec;
649 };
650
651 template <>
652 class SkNx<16, uint8_t> {
653 public:
SkNx(const __m128i & vec)654 AI SkNx(const __m128i& vec) : fVec(vec) {}
655
SkNx()656 AI SkNx() {}
SkNx(uint8_t val)657 AI SkNx(uint8_t val) : fVec(_mm_set1_epi8((char)val)) {}
Load(const void * ptr)658 AI static SkNx Load(const void* ptr) { return _mm_loadu_si128((const __m128i*)ptr); }
SkNx(uint8_t a,uint8_t b,uint8_t c,uint8_t d,uint8_t e,uint8_t f,uint8_t g,uint8_t h,uint8_t i,uint8_t j,uint8_t k,uint8_t l,uint8_t m,uint8_t n,uint8_t o,uint8_t p)659 AI SkNx(uint8_t a, uint8_t b, uint8_t c, uint8_t d,
660 uint8_t e, uint8_t f, uint8_t g, uint8_t h,
661 uint8_t i, uint8_t j, uint8_t k, uint8_t l,
662 uint8_t m, uint8_t n, uint8_t o, uint8_t p)
663 : fVec(_mm_setr_epi8((char)a,(char)b,(char)c,(char)d,
664 (char)e,(char)f,(char)g,(char)h,
665 (char)i,(char)j,(char)k,(char)l,
666 (char)m,(char)n,(char)o,(char)p)) {}
667
store(void * ptr)668 AI void store(void* ptr) const { _mm_storeu_si128((__m128i*)ptr, fVec); }
669
saturatedAdd(const SkNx & o)670 AI SkNx saturatedAdd(const SkNx& o) const { return _mm_adds_epu8(fVec, o.fVec); }
671
672 AI SkNx operator + (const SkNx& o) const { return _mm_add_epi8(fVec, o.fVec); }
673 AI SkNx operator - (const SkNx& o) const { return _mm_sub_epi8(fVec, o.fVec); }
674 AI SkNx operator & (const SkNx& o) const { return _mm_and_si128(fVec, o.fVec); }
675
Min(const SkNx & a,const SkNx & b)676 AI static SkNx Min(const SkNx& a, const SkNx& b) { return _mm_min_epu8(a.fVec, b.fVec); }
677 AI SkNx operator < (const SkNx& o) const {
678 // There's no unsigned _mm_cmplt_epu8, so we flip the sign bits then use a signed compare.
679 auto flip = _mm_set1_epi8(char(0x80));
680 return _mm_cmplt_epi8(_mm_xor_si128(flip, fVec), _mm_xor_si128(flip, o.fVec));
681 }
682
683 AI uint8_t operator[](int k) const {
684 SkASSERT(0 <= k && k < 16);
685 union { __m128i v; uint8_t us[16]; } pun = {fVec};
686 return pun.us[k&15];
687 }
688
thenElse(const SkNx & t,const SkNx & e)689 AI SkNx thenElse(const SkNx& t, const SkNx& e) const {
690 return _mm_or_si128(_mm_and_si128 (fVec, t.fVec),
691 _mm_andnot_si128(fVec, e.fVec));
692 }
693
694 __m128i fVec;
695 };
696
697 template<> AI /*static*/ Sk4f SkNx_cast<float, int32_t>(const Sk4i& src) {
698 return _mm_cvtepi32_ps(src.fVec);
699 }
700
701 template<> AI /*static*/ Sk4f SkNx_cast<float, uint32_t>(const Sk4u& src) {
702 return SkNx_cast<float>(Sk4i::Load(&src));
703 }
704
705 template <> AI /*static*/ Sk4i SkNx_cast<int32_t, float>(const Sk4f& src) {
706 return _mm_cvttps_epi32(src.fVec);
707 }
708
709 template<> AI /*static*/ Sk4h SkNx_cast<uint16_t, int32_t>(const Sk4i& src) {
710 #if 0 && SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSE41
711 // TODO: This seems to be causing code generation problems. Investigate?
712 return _mm_packus_epi32(src.fVec);
713 #elif SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
714 // With SSSE3, we can just shuffle the low 2 bytes from each lane right into place.
715 const int _ = ~0;
716 return _mm_shuffle_epi8(src.fVec, _mm_setr_epi8(0,1, 4,5, 8,9, 12,13, _,_,_,_,_,_,_,_));
717 #else
718 // With SSE2, we have to sign extend our input, making _mm_packs_epi32 do the pack we want.
719 __m128i x = _mm_srai_epi32(_mm_slli_epi32(src.fVec, 16), 16);
720 return _mm_packs_epi32(x,x);
721 #endif
722 }
723
724 template<> AI /*static*/ Sk4h SkNx_cast<uint16_t, float>(const Sk4f& src) {
725 return SkNx_cast<uint16_t>(SkNx_cast<int32_t>(src));
726 }
727
728 template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, float>(const Sk4f& src) {
729 auto _32 = _mm_cvttps_epi32(src.fVec);
730 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
731 const int _ = ~0;
732 return _mm_shuffle_epi8(_32, _mm_setr_epi8(0,4,8,12, _,_,_,_, _,_,_,_, _,_,_,_));
733 #else
734 auto _16 = _mm_packus_epi16(_32, _32);
735 return _mm_packus_epi16(_16, _16);
736 #endif
737 }
738
739 template<> AI /*static*/ Sk4u SkNx_cast<uint32_t, uint8_t>(const Sk4b& src) {
740 #if SK_CPU_SSE_LEVEL >= SK_CPU_SSE_LEVEL_SSSE3
741 const int _ = ~0;
742 return _mm_shuffle_epi8(src.fVec, _mm_setr_epi8(0,_,_,_, 1,_,_,_, 2,_,_,_, 3,_,_,_));
743 #else
744 auto _16 = _mm_unpacklo_epi8(src.fVec, _mm_setzero_si128());
745 return _mm_unpacklo_epi16(_16, _mm_setzero_si128());
746 #endif
747 }
748
749 template<> AI /*static*/ Sk4i SkNx_cast<int32_t, uint8_t>(const Sk4b& src) {
750 return SkNx_cast<uint32_t>(src).fVec;
751 }
752
753 template<> AI /*static*/ Sk4f SkNx_cast<float, uint8_t>(const Sk4b& src) {
754 return _mm_cvtepi32_ps(SkNx_cast<int32_t>(src).fVec);
755 }
756
757 template<> AI /*static*/ Sk4f SkNx_cast<float, uint16_t>(const Sk4h& src) {
758 auto _32 = _mm_unpacklo_epi16(src.fVec, _mm_setzero_si128());
759 return _mm_cvtepi32_ps(_32);
760 }
761
762 template<> AI /*static*/ Sk8b SkNx_cast<uint8_t, int32_t>(const Sk8i& src) {
763 Sk4i lo, hi;
764 SkNx_split(src, &lo, &hi);
765
766 auto t = _mm_packs_epi32(lo.fVec, hi.fVec);
767 return _mm_packus_epi16(t, t);
768 }
769
770 template<> AI /*static*/ Sk16b SkNx_cast<uint8_t, float>(const Sk16f& src) {
771 Sk8f ab, cd;
772 SkNx_split(src, &ab, &cd);
773
774 Sk4f a,b,c,d;
775 SkNx_split(ab, &a, &b);
776 SkNx_split(cd, &c, &d);
777
778 return _mm_packus_epi16(_mm_packus_epi16(_mm_cvttps_epi32(a.fVec),
779 _mm_cvttps_epi32(b.fVec)),
780 _mm_packus_epi16(_mm_cvttps_epi32(c.fVec),
781 _mm_cvttps_epi32(d.fVec)));
782 }
783
784 template<> AI /*static*/ Sk4h SkNx_cast<uint16_t, uint8_t>(const Sk4b& src) {
785 return _mm_unpacklo_epi8(src.fVec, _mm_setzero_si128());
786 }
787
788 template<> AI /*static*/ Sk8h SkNx_cast<uint16_t, uint8_t>(const Sk8b& src) {
789 return _mm_unpacklo_epi8(src.fVec, _mm_setzero_si128());
790 }
791
792 template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, uint16_t>(const Sk4h& src) {
793 return _mm_packus_epi16(src.fVec, src.fVec);
794 }
795
796 template<> AI /*static*/ Sk8b SkNx_cast<uint8_t, uint16_t>(const Sk8h& src) {
797 return _mm_packus_epi16(src.fVec, src.fVec);
798 }
799
800 template<> AI /*static*/ Sk4i SkNx_cast<int32_t, uint16_t>(const Sk4h& src) {
801 return _mm_unpacklo_epi16(src.fVec, _mm_setzero_si128());
802 }
803
804
805 template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, int32_t>(const Sk4i& src) {
806 return _mm_packus_epi16(_mm_packus_epi16(src.fVec, src.fVec), src.fVec);
807 }
808
809 template<> AI /*static*/ Sk4b SkNx_cast<uint8_t, uint32_t>(const Sk4u& src) {
810 return _mm_packus_epi16(_mm_packus_epi16(src.fVec, src.fVec), src.fVec);
811 }
812
813 template<> AI /*static*/ Sk4i SkNx_cast<int32_t, uint32_t>(const Sk4u& src) {
814 return src.fVec;
815 }
816
Sk4f_round(const Sk4f & x)817 AI static Sk4i Sk4f_round(const Sk4f& x) {
818 return _mm_cvtps_epi32(x.fVec);
819 }
820
821 } // namespace
822
823 #endif//SkNx_sse_DEFINED
824