1 /*
2 * Copyright 2009 The Android Open Source Project
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 <emmintrin.h>
9 #include "SkBitmapProcState_opts_SSE2.h"
10 #include "SkColorPriv.h"
11 #include "SkPaint.h"
12 #include "SkUtils.h"
13
S32_opaque_D32_filter_DX_SSE2(const SkBitmapProcState & s,const uint32_t * xy,int count,uint32_t * colors)14 void S32_opaque_D32_filter_DX_SSE2(const SkBitmapProcState& s,
15 const uint32_t* xy,
16 int count, uint32_t* colors) {
17 SkASSERT(count > 0 && colors != nullptr);
18 SkASSERT(s.fFilterQuality != kNone_SkFilterQuality);
19 SkASSERT(kN32_SkColorType == s.fPixmap.colorType());
20 SkASSERT(s.fAlphaScale == 256);
21
22 const char* srcAddr = static_cast<const char*>(s.fPixmap.addr());
23 size_t rb = s.fPixmap.rowBytes();
24 uint32_t XY = *xy++;
25 unsigned y0 = XY >> 14;
26 const uint32_t* row0 = reinterpret_cast<const uint32_t*>(srcAddr + (y0 >> 4) * rb);
27 const uint32_t* row1 = reinterpret_cast<const uint32_t*>(srcAddr + (XY & 0x3FFF) * rb);
28 unsigned subY = y0 & 0xF;
29
30 // ( 0, 0, 0, 0, 0, 0, 0, 16)
31 __m128i sixteen = _mm_cvtsi32_si128(16);
32
33 // ( 0, 0, 0, 0, 16, 16, 16, 16)
34 sixteen = _mm_shufflelo_epi16(sixteen, 0);
35
36 // ( 0, 0, 0, 0, 0, 0, 0, y)
37 __m128i allY = _mm_cvtsi32_si128(subY);
38
39 // ( 0, 0, 0, 0, y, y, y, y)
40 allY = _mm_shufflelo_epi16(allY, 0);
41
42 // ( 0, 0, 0, 0, 16-y, 16-y, 16-y, 16-y)
43 __m128i negY = _mm_sub_epi16(sixteen, allY);
44
45 // (16-y, 16-y, 16-y, 16-y, y, y, y, y)
46 allY = _mm_unpacklo_epi64(allY, negY);
47
48 // (16, 16, 16, 16, 16, 16, 16, 16 )
49 sixteen = _mm_shuffle_epi32(sixteen, 0);
50
51 // ( 0, 0, 0, 0, 0, 0, 0, 0)
52 __m128i zero = _mm_setzero_si128();
53 do {
54 uint32_t XX = *xy++; // x0:14 | 4 | x1:14
55 unsigned x0 = XX >> 18;
56 unsigned x1 = XX & 0x3FFF;
57
58 // (0, 0, 0, 0, 0, 0, 0, x)
59 __m128i allX = _mm_cvtsi32_si128((XX >> 14) & 0x0F);
60
61 // (0, 0, 0, 0, x, x, x, x)
62 allX = _mm_shufflelo_epi16(allX, 0);
63
64 // (x, x, x, x, x, x, x, x)
65 allX = _mm_shuffle_epi32(allX, 0);
66
67 // (16-x, 16-x, 16-x, 16-x, 16-x, 16-x, 16-x)
68 __m128i negX = _mm_sub_epi16(sixteen, allX);
69
70 // Load 4 samples (pixels).
71 __m128i a00 = _mm_cvtsi32_si128(row0[x0]);
72 __m128i a01 = _mm_cvtsi32_si128(row0[x1]);
73 __m128i a10 = _mm_cvtsi32_si128(row1[x0]);
74 __m128i a11 = _mm_cvtsi32_si128(row1[x1]);
75
76 // (0, 0, a00, a10)
77 __m128i a00a10 = _mm_unpacklo_epi32(a10, a00);
78
79 // Expand to 16 bits per component.
80 a00a10 = _mm_unpacklo_epi8(a00a10, zero);
81
82 // ((a00 * (16-y)), (a10 * y)).
83 a00a10 = _mm_mullo_epi16(a00a10, allY);
84
85 // (a00 * (16-y) * (16-x), a10 * y * (16-x)).
86 a00a10 = _mm_mullo_epi16(a00a10, negX);
87
88 // (0, 0, a01, a10)
89 __m128i a01a11 = _mm_unpacklo_epi32(a11, a01);
90
91 // Expand to 16 bits per component.
92 a01a11 = _mm_unpacklo_epi8(a01a11, zero);
93
94 // (a01 * (16-y)), (a11 * y)
95 a01a11 = _mm_mullo_epi16(a01a11, allY);
96
97 // (a01 * (16-y) * x), (a11 * y * x)
98 a01a11 = _mm_mullo_epi16(a01a11, allX);
99
100 // (a00*w00 + a01*w01, a10*w10 + a11*w11)
101 __m128i sum = _mm_add_epi16(a00a10, a01a11);
102
103 // (DC, a00*w00 + a01*w01)
104 __m128i shifted = _mm_shuffle_epi32(sum, 0xEE);
105
106 // (DC, a00*w00 + a01*w01 + a10*w10 + a11*w11)
107 sum = _mm_add_epi16(sum, shifted);
108
109 // Divide each 16 bit component by 256.
110 sum = _mm_srli_epi16(sum, 8);
111
112 // Pack lower 4 16 bit values of sum into lower 4 bytes.
113 sum = _mm_packus_epi16(sum, zero);
114
115 // Extract low int and store.
116 *colors++ = _mm_cvtsi128_si32(sum);
117 } while (--count > 0);
118 }
119
S32_alpha_D32_filter_DX_SSE2(const SkBitmapProcState & s,const uint32_t * xy,int count,uint32_t * colors)120 void S32_alpha_D32_filter_DX_SSE2(const SkBitmapProcState& s,
121 const uint32_t* xy,
122 int count, uint32_t* colors) {
123 SkASSERT(count > 0 && colors != nullptr);
124 SkASSERT(s.fFilterQuality != kNone_SkFilterQuality);
125 SkASSERT(kN32_SkColorType == s.fPixmap.colorType());
126 SkASSERT(s.fAlphaScale < 256);
127
128 const char* srcAddr = static_cast<const char*>(s.fPixmap.addr());
129 size_t rb = s.fPixmap.rowBytes();
130 uint32_t XY = *xy++;
131 unsigned y0 = XY >> 14;
132 const uint32_t* row0 = reinterpret_cast<const uint32_t*>(srcAddr + (y0 >> 4) * rb);
133 const uint32_t* row1 = reinterpret_cast<const uint32_t*>(srcAddr + (XY & 0x3FFF) * rb);
134 unsigned subY = y0 & 0xF;
135
136 // ( 0, 0, 0, 0, 0, 0, 0, 16)
137 __m128i sixteen = _mm_cvtsi32_si128(16);
138
139 // ( 0, 0, 0, 0, 16, 16, 16, 16)
140 sixteen = _mm_shufflelo_epi16(sixteen, 0);
141
142 // ( 0, 0, 0, 0, 0, 0, 0, y)
143 __m128i allY = _mm_cvtsi32_si128(subY);
144
145 // ( 0, 0, 0, 0, y, y, y, y)
146 allY = _mm_shufflelo_epi16(allY, 0);
147
148 // ( 0, 0, 0, 0, 16-y, 16-y, 16-y, 16-y)
149 __m128i negY = _mm_sub_epi16(sixteen, allY);
150
151 // (16-y, 16-y, 16-y, 16-y, y, y, y, y)
152 allY = _mm_unpacklo_epi64(allY, negY);
153
154 // (16, 16, 16, 16, 16, 16, 16, 16 )
155 sixteen = _mm_shuffle_epi32(sixteen, 0);
156
157 // ( 0, 0, 0, 0, 0, 0, 0, 0)
158 __m128i zero = _mm_setzero_si128();
159
160 // ( alpha, alpha, alpha, alpha, alpha, alpha, alpha, alpha )
161 __m128i alpha = _mm_set1_epi16(s.fAlphaScale);
162
163 do {
164 uint32_t XX = *xy++; // x0:14 | 4 | x1:14
165 unsigned x0 = XX >> 18;
166 unsigned x1 = XX & 0x3FFF;
167
168 // (0, 0, 0, 0, 0, 0, 0, x)
169 __m128i allX = _mm_cvtsi32_si128((XX >> 14) & 0x0F);
170
171 // (0, 0, 0, 0, x, x, x, x)
172 allX = _mm_shufflelo_epi16(allX, 0);
173
174 // (x, x, x, x, x, x, x, x)
175 allX = _mm_shuffle_epi32(allX, 0);
176
177 // (16-x, 16-x, 16-x, 16-x, 16-x, 16-x, 16-x)
178 __m128i negX = _mm_sub_epi16(sixteen, allX);
179
180 // Load 4 samples (pixels).
181 __m128i a00 = _mm_cvtsi32_si128(row0[x0]);
182 __m128i a01 = _mm_cvtsi32_si128(row0[x1]);
183 __m128i a10 = _mm_cvtsi32_si128(row1[x0]);
184 __m128i a11 = _mm_cvtsi32_si128(row1[x1]);
185
186 // (0, 0, a00, a10)
187 __m128i a00a10 = _mm_unpacklo_epi32(a10, a00);
188
189 // Expand to 16 bits per component.
190 a00a10 = _mm_unpacklo_epi8(a00a10, zero);
191
192 // ((a00 * (16-y)), (a10 * y)).
193 a00a10 = _mm_mullo_epi16(a00a10, allY);
194
195 // (a00 * (16-y) * (16-x), a10 * y * (16-x)).
196 a00a10 = _mm_mullo_epi16(a00a10, negX);
197
198 // (0, 0, a01, a10)
199 __m128i a01a11 = _mm_unpacklo_epi32(a11, a01);
200
201 // Expand to 16 bits per component.
202 a01a11 = _mm_unpacklo_epi8(a01a11, zero);
203
204 // (a01 * (16-y)), (a11 * y)
205 a01a11 = _mm_mullo_epi16(a01a11, allY);
206
207 // (a01 * (16-y) * x), (a11 * y * x)
208 a01a11 = _mm_mullo_epi16(a01a11, allX);
209
210 // (a00*w00 + a01*w01, a10*w10 + a11*w11)
211 __m128i sum = _mm_add_epi16(a00a10, a01a11);
212
213 // (DC, a00*w00 + a01*w01)
214 __m128i shifted = _mm_shuffle_epi32(sum, 0xEE);
215
216 // (DC, a00*w00 + a01*w01 + a10*w10 + a11*w11)
217 sum = _mm_add_epi16(sum, shifted);
218
219 // Divide each 16 bit component by 256.
220 sum = _mm_srli_epi16(sum, 8);
221
222 // Multiply by alpha.
223 sum = _mm_mullo_epi16(sum, alpha);
224
225 // Divide each 16 bit component by 256.
226 sum = _mm_srli_epi16(sum, 8);
227
228 // Pack lower 4 16 bit values of sum into lower 4 bytes.
229 sum = _mm_packus_epi16(sum, zero);
230
231 // Extract low int and store.
232 *colors++ = _mm_cvtsi128_si32(sum);
233 } while (--count > 0);
234 }
235
ClampX_ClampY_pack_filter(SkFixed f,unsigned max,SkFixed one)236 static inline uint32_t ClampX_ClampY_pack_filter(SkFixed f, unsigned max,
237 SkFixed one) {
238 unsigned i = SkClampMax(f >> 16, max);
239 i = (i << 4) | ((f >> 12) & 0xF);
240 return (i << 14) | SkClampMax((f + one) >> 16, max);
241 }
242
243 /* SSE version of ClampX_ClampY_filter_scale()
244 * portable version is in core/SkBitmapProcState_matrix.h
245 */
ClampX_ClampY_filter_scale_SSE2(const SkBitmapProcState & s,uint32_t xy[],int count,int x,int y)246 void ClampX_ClampY_filter_scale_SSE2(const SkBitmapProcState& s, uint32_t xy[],
247 int count, int x, int y) {
248 SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
249 SkMatrix::kScale_Mask)) == 0);
250 SkASSERT(s.fInvKy == 0);
251
252 const unsigned maxX = s.fPixmap.width() - 1;
253 const SkFixed one = s.fFilterOneX;
254 const SkFixed dx = s.fInvSx;
255
256 const SkBitmapProcStateAutoMapper mapper(s, x, y);
257 const SkFixed fy = mapper.fixedY();
258 const unsigned maxY = s.fPixmap.height() - 1;
259 // compute our two Y values up front
260 *xy++ = ClampX_ClampY_pack_filter(fy, maxY, s.fFilterOneY);
261 // now initialize fx
262 SkFixed fx = mapper.fixedX();
263
264 // test if we don't need to apply the tile proc
265 if (dx > 0 && (unsigned)(fx >> 16) <= maxX &&
266 (unsigned)((fx + dx * (count - 1)) >> 16) < maxX) {
267 if (count >= 4) {
268 // SSE version of decal_filter_scale
269 while ((size_t(xy) & 0x0F) != 0) {
270 SkASSERT((fx >> (16 + 14)) == 0);
271 *xy++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
272 fx += dx;
273 count--;
274 }
275
276 __m128i wide_1 = _mm_set1_epi32(1);
277 __m128i wide_dx4 = _mm_set1_epi32(dx * 4);
278 __m128i wide_fx = _mm_set_epi32(fx + dx * 3, fx + dx * 2,
279 fx + dx, fx);
280
281 while (count >= 4) {
282 __m128i wide_out;
283
284 wide_out = _mm_slli_epi32(_mm_srai_epi32(wide_fx, 12), 14);
285 wide_out = _mm_or_si128(wide_out, _mm_add_epi32(
286 _mm_srai_epi32(wide_fx, 16), wide_1));
287
288 _mm_store_si128(reinterpret_cast<__m128i*>(xy), wide_out);
289
290 xy += 4;
291 fx += dx * 4;
292 wide_fx = _mm_add_epi32(wide_fx, wide_dx4);
293 count -= 4;
294 } // while count >= 4
295 } // if count >= 4
296
297 while (count-- > 0) {
298 SkASSERT((fx >> (16 + 14)) == 0);
299 *xy++ = (fx >> 12 << 14) | ((fx >> 16) + 1);
300 fx += dx;
301 }
302 } else {
303 // SSE2 only support 16bit interger max & min, so only process the case
304 // maxX less than the max 16bit interger. Actually maxX is the bitmap's
305 // height, there should be rare bitmap whose height will be greater
306 // than max 16bit interger in the real world.
307 if ((count >= 4) && (maxX <= 0xFFFF)) {
308 while (((size_t)xy & 0x0F) != 0) {
309 *xy++ = ClampX_ClampY_pack_filter(fx, maxX, one);
310 fx += dx;
311 count--;
312 }
313
314 __m128i wide_fx = _mm_set_epi32(fx + dx * 3, fx + dx * 2,
315 fx + dx, fx);
316 __m128i wide_dx4 = _mm_set1_epi32(dx * 4);
317 __m128i wide_one = _mm_set1_epi32(one);
318 __m128i wide_maxX = _mm_set1_epi32(maxX);
319 __m128i wide_mask = _mm_set1_epi32(0xF);
320
321 while (count >= 4) {
322 __m128i wide_i;
323 __m128i wide_lo;
324 __m128i wide_fx1;
325
326 // i = SkClampMax(f>>16,maxX)
327 wide_i = _mm_max_epi16(_mm_srli_epi32(wide_fx, 16),
328 _mm_setzero_si128());
329 wide_i = _mm_min_epi16(wide_i, wide_maxX);
330
331 // i<<4 | TILEX_LOW_BITS(fx)
332 wide_lo = _mm_srli_epi32(wide_fx, 12);
333 wide_lo = _mm_and_si128(wide_lo, wide_mask);
334 wide_i = _mm_slli_epi32(wide_i, 4);
335 wide_i = _mm_or_si128(wide_i, wide_lo);
336
337 // i<<14
338 wide_i = _mm_slli_epi32(wide_i, 14);
339
340 // SkClampMax(((f+one))>>16,max)
341 wide_fx1 = _mm_add_epi32(wide_fx, wide_one);
342 wide_fx1 = _mm_max_epi16(_mm_srli_epi32(wide_fx1, 16),
343 _mm_setzero_si128());
344 wide_fx1 = _mm_min_epi16(wide_fx1, wide_maxX);
345
346 // final combination
347 wide_i = _mm_or_si128(wide_i, wide_fx1);
348 _mm_store_si128(reinterpret_cast<__m128i*>(xy), wide_i);
349
350 wide_fx = _mm_add_epi32(wide_fx, wide_dx4);
351 fx += dx * 4;
352 xy += 4;
353 count -= 4;
354 } // while count >= 4
355 } // if count >= 4
356
357 while (count-- > 0) {
358 *xy++ = ClampX_ClampY_pack_filter(fx, maxX, one);
359 fx += dx;
360 }
361 }
362 }
363
364 /* SSE version of ClampX_ClampY_nofilter_scale()
365 * portable version is in core/SkBitmapProcState_matrix.h
366 */
ClampX_ClampY_nofilter_scale_SSE2(const SkBitmapProcState & s,uint32_t xy[],int count,int x,int y)367 void ClampX_ClampY_nofilter_scale_SSE2(const SkBitmapProcState& s,
368 uint32_t xy[], int count, int x, int y) {
369 SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
370 SkMatrix::kScale_Mask)) == 0);
371
372 // we store y, x, x, x, x, x
373 const unsigned maxX = s.fPixmap.width() - 1;
374 const SkBitmapProcStateAutoMapper mapper(s, x, y);
375 const unsigned maxY = s.fPixmap.height() - 1;
376 *xy++ = SkClampMax(mapper.intY(), maxY);
377 SkFixed fx = mapper.fixedX();
378
379 if (0 == maxX) {
380 // all of the following X values must be 0
381 memset(xy, 0, count * sizeof(uint16_t));
382 return;
383 }
384
385 const SkFixed dx = s.fInvSx;
386
387 // test if we don't need to apply the tile proc
388 if ((unsigned)(fx >> 16) <= maxX &&
389 (unsigned)((fx + dx * (count - 1)) >> 16) <= maxX) {
390 // SSE version of decal_nofilter_scale
391 if (count >= 8) {
392 while (((size_t)xy & 0x0F) != 0) {
393 *xy++ = pack_two_shorts(fx >> 16, (fx + dx) >> 16);
394 fx += 2 * dx;
395 count -= 2;
396 }
397
398 __m128i wide_dx4 = _mm_set1_epi32(dx * 4);
399 __m128i wide_dx8 = _mm_add_epi32(wide_dx4, wide_dx4);
400
401 __m128i wide_low = _mm_set_epi32(fx + dx * 3, fx + dx * 2,
402 fx + dx, fx);
403 __m128i wide_high = _mm_add_epi32(wide_low, wide_dx4);
404
405 while (count >= 8) {
406 __m128i wide_out_low = _mm_srli_epi32(wide_low, 16);
407 __m128i wide_out_high = _mm_srli_epi32(wide_high, 16);
408
409 __m128i wide_result = _mm_packs_epi32(wide_out_low,
410 wide_out_high);
411 _mm_store_si128(reinterpret_cast<__m128i*>(xy), wide_result);
412
413 wide_low = _mm_add_epi32(wide_low, wide_dx8);
414 wide_high = _mm_add_epi32(wide_high, wide_dx8);
415
416 xy += 4;
417 fx += dx * 8;
418 count -= 8;
419 }
420 } // if count >= 8
421
422 uint16_t* xx = reinterpret_cast<uint16_t*>(xy);
423 while (count-- > 0) {
424 *xx++ = SkToU16(fx >> 16);
425 fx += dx;
426 }
427 } else {
428 // SSE2 only support 16bit interger max & min, so only process the case
429 // maxX less than the max 16bit interger. Actually maxX is the bitmap's
430 // height, there should be rare bitmap whose height will be greater
431 // than max 16bit interger in the real world.
432 if ((count >= 8) && (maxX <= 0xFFFF)) {
433 while (((size_t)xy & 0x0F) != 0) {
434 *xy++ = pack_two_shorts(SkClampMax((fx + dx) >> 16, maxX),
435 SkClampMax(fx >> 16, maxX));
436 fx += 2 * dx;
437 count -= 2;
438 }
439
440 __m128i wide_dx4 = _mm_set1_epi32(dx * 4);
441 __m128i wide_dx8 = _mm_add_epi32(wide_dx4, wide_dx4);
442
443 __m128i wide_low = _mm_set_epi32(fx + dx * 3, fx + dx * 2,
444 fx + dx, fx);
445 __m128i wide_high = _mm_add_epi32(wide_low, wide_dx4);
446 __m128i wide_maxX = _mm_set1_epi32(maxX);
447
448 while (count >= 8) {
449 __m128i wide_out_low = _mm_srli_epi32(wide_low, 16);
450 __m128i wide_out_high = _mm_srli_epi32(wide_high, 16);
451
452 wide_out_low = _mm_max_epi16(wide_out_low,
453 _mm_setzero_si128());
454 wide_out_low = _mm_min_epi16(wide_out_low, wide_maxX);
455 wide_out_high = _mm_max_epi16(wide_out_high,
456 _mm_setzero_si128());
457 wide_out_high = _mm_min_epi16(wide_out_high, wide_maxX);
458
459 __m128i wide_result = _mm_packs_epi32(wide_out_low,
460 wide_out_high);
461 _mm_store_si128(reinterpret_cast<__m128i*>(xy), wide_result);
462
463 wide_low = _mm_add_epi32(wide_low, wide_dx8);
464 wide_high = _mm_add_epi32(wide_high, wide_dx8);
465
466 xy += 4;
467 fx += dx * 8;
468 count -= 8;
469 }
470 } // if count >= 8
471
472 uint16_t* xx = reinterpret_cast<uint16_t*>(xy);
473 while (count-- > 0) {
474 *xx++ = SkClampMax(fx >> 16, maxX);
475 fx += dx;
476 }
477 }
478 }
479
480 /* SSE version of ClampX_ClampY_filter_affine()
481 * portable version is in core/SkBitmapProcState_matrix.h
482 */
ClampX_ClampY_filter_affine_SSE2(const SkBitmapProcState & s,uint32_t xy[],int count,int x,int y)483 void ClampX_ClampY_filter_affine_SSE2(const SkBitmapProcState& s,
484 uint32_t xy[], int count, int x, int y) {
485 const SkBitmapProcStateAutoMapper mapper(s, x, y);
486
487 SkFixed oneX = s.fFilterOneX;
488 SkFixed oneY = s.fFilterOneY;
489 SkFixed fx = mapper.fixedX();
490 SkFixed fy = mapper.fixedY();
491 SkFixed dx = s.fInvSx;
492 SkFixed dy = s.fInvKy;
493 unsigned maxX = s.fPixmap.width() - 1;
494 unsigned maxY = s.fPixmap.height() - 1;
495
496 if (count >= 2 && (maxX <= 0xFFFF)) {
497 SkFixed dx2 = dx + dx;
498 SkFixed dy2 = dy + dy;
499
500 __m128i wide_f = _mm_set_epi32(fx + dx, fy + dy, fx, fy);
501 __m128i wide_d2 = _mm_set_epi32(dx2, dy2, dx2, dy2);
502 __m128i wide_one = _mm_set_epi32(oneX, oneY, oneX, oneY);
503 __m128i wide_max = _mm_set_epi32(maxX, maxY, maxX, maxY);
504 __m128i wide_mask = _mm_set1_epi32(0xF);
505
506 while (count >= 2) {
507 // i = SkClampMax(f>>16,maxX)
508 __m128i wide_i = _mm_max_epi16(_mm_srli_epi32(wide_f, 16),
509 _mm_setzero_si128());
510 wide_i = _mm_min_epi16(wide_i, wide_max);
511
512 // i<<4 | TILEX_LOW_BITS(f)
513 __m128i wide_lo = _mm_srli_epi32(wide_f, 12);
514 wide_lo = _mm_and_si128(wide_lo, wide_mask);
515 wide_i = _mm_slli_epi32(wide_i, 4);
516 wide_i = _mm_or_si128(wide_i, wide_lo);
517
518 // i<<14
519 wide_i = _mm_slli_epi32(wide_i, 14);
520
521 // SkClampMax(((f+one))>>16,max)
522 __m128i wide_f1 = _mm_add_epi32(wide_f, wide_one);
523 wide_f1 = _mm_max_epi16(_mm_srli_epi32(wide_f1, 16),
524 _mm_setzero_si128());
525 wide_f1 = _mm_min_epi16(wide_f1, wide_max);
526
527 // final combination
528 wide_i = _mm_or_si128(wide_i, wide_f1);
529 _mm_storeu_si128(reinterpret_cast<__m128i*>(xy), wide_i);
530
531 wide_f = _mm_add_epi32(wide_f, wide_d2);
532
533 fx += dx2;
534 fy += dy2;
535 xy += 4;
536 count -= 2;
537 } // while count >= 2
538 } // if count >= 2
539
540 while (count-- > 0) {
541 *xy++ = ClampX_ClampY_pack_filter(fy, maxY, oneY);
542 fy += dy;
543 *xy++ = ClampX_ClampY_pack_filter(fx, maxX, oneX);
544 fx += dx;
545 }
546 }
547
548 /* SSE version of ClampX_ClampY_nofilter_affine()
549 * portable version is in core/SkBitmapProcState_matrix.h
550 */
ClampX_ClampY_nofilter_affine_SSE2(const SkBitmapProcState & s,uint32_t xy[],int count,int x,int y)551 void ClampX_ClampY_nofilter_affine_SSE2(const SkBitmapProcState& s,
552 uint32_t xy[], int count, int x, int y) {
553 SkASSERT(s.fInvType & SkMatrix::kAffine_Mask);
554 SkASSERT((s.fInvType & ~(SkMatrix::kTranslate_Mask |
555 SkMatrix::kScale_Mask |
556 SkMatrix::kAffine_Mask)) == 0);
557
558 const SkBitmapProcStateAutoMapper mapper(s, x, y);
559
560 SkFixed fx = mapper.fixedX();
561 SkFixed fy = mapper.fixedY();
562 SkFixed dx = s.fInvSx;
563 SkFixed dy = s.fInvKy;
564 int maxX = s.fPixmap.width() - 1;
565 int maxY = s.fPixmap.height() - 1;
566
567 if (count >= 4 && (maxX <= 0xFFFF)) {
568 while (((size_t)xy & 0x0F) != 0) {
569 *xy++ = (SkClampMax(fy >> 16, maxY) << 16) |
570 SkClampMax(fx >> 16, maxX);
571 fx += dx;
572 fy += dy;
573 count--;
574 }
575
576 SkFixed dx4 = dx * 4;
577 SkFixed dy4 = dy * 4;
578
579 __m128i wide_fx = _mm_set_epi32(fx + dx * 3, fx + dx * 2,
580 fx + dx, fx);
581 __m128i wide_fy = _mm_set_epi32(fy + dy * 3, fy + dy * 2,
582 fy + dy, fy);
583 __m128i wide_dx4 = _mm_set1_epi32(dx4);
584 __m128i wide_dy4 = _mm_set1_epi32(dy4);
585
586 __m128i wide_maxX = _mm_set1_epi32(maxX);
587 __m128i wide_maxY = _mm_set1_epi32(maxY);
588
589 while (count >= 4) {
590 // SkClampMax(fx>>16,maxX)
591 __m128i wide_lo = _mm_max_epi16(_mm_srli_epi32(wide_fx, 16),
592 _mm_setzero_si128());
593 wide_lo = _mm_min_epi16(wide_lo, wide_maxX);
594
595 // SkClampMax(fy>>16,maxY)
596 __m128i wide_hi = _mm_max_epi16(_mm_srli_epi32(wide_fy, 16),
597 _mm_setzero_si128());
598 wide_hi = _mm_min_epi16(wide_hi, wide_maxY);
599
600 // final combination
601 __m128i wide_i = _mm_or_si128(_mm_slli_epi32(wide_hi, 16),
602 wide_lo);
603 _mm_store_si128(reinterpret_cast<__m128i*>(xy), wide_i);
604
605 wide_fx = _mm_add_epi32(wide_fx, wide_dx4);
606 wide_fy = _mm_add_epi32(wide_fy, wide_dy4);
607
608 fx += dx4;
609 fy += dy4;
610 xy += 4;
611 count -= 4;
612 } // while count >= 4
613 } // if count >= 4
614
615 while (count-- > 0) {
616 *xy++ = (SkClampMax(fy >> 16, maxY) << 16) |
617 SkClampMax(fx >> 16, maxX);
618 fx += dx;
619 fy += dy;
620 }
621 }
622