1 #include "SkXfermode.h"
2 #include "SkXfermode_proccoeff.h"
3 #include "SkColorPriv.h"
6 #include "SkColor_opts_neon.h"
7 #include "SkXfermode_opts_arm_neon.h"
9 #define SkAlphaMulAlpha(a, b) SkMulDiv255Round(a, b)
12 ////////////////////////////////////////////////////////////////////////////////
13 // NEONized skia functions
14 ////////////////////////////////////////////////////////////////////////////////
16 static inline uint8x8_t SkAlphaMulAlpha_neon8(uint8x8_t color, uint8x8_t alpha) {
20 tmp = vmull_u8(color, alpha);
21 tmp = vaddq_u16(tmp, vdupq_n_u16(128));
22 tmp = vaddq_u16(tmp, vshrq_n_u16(tmp, 8));
24 ret = vshrn_n_u16(tmp, 8);
29 static inline uint16x8_t SkAlphaMulAlpha_neon8_16(uint8x8_t color, uint8x8_t alpha) {
32 ret = vmull_u8(color, alpha);
33 ret = vaddq_u16(ret, vdupq_n_u16(128));
34 ret = vaddq_u16(ret, vshrq_n_u16(ret, 8));
36 ret = vshrq_n_u16(ret, 8);
41 static inline uint8x8_t SkDiv255Round_neon8_32_8(int32x4_t p1, int32x4_t p2) {
45 tmp = vmovn_high_u32(vmovn_u32(vreinterpretq_u32_s32(p1)),
46 vreinterpretq_u32_s32(p2));
48 tmp = vcombine_u16(vmovn_u32(vreinterpretq_u32_s32(p1)),
49 vmovn_u32(vreinterpretq_u32_s32(p2)));
52 tmp += vdupq_n_u16(128);
53 tmp += vshrq_n_u16(tmp, 8);
55 return vshrn_n_u16(tmp, 8);
58 static inline uint16x8_t SkDiv255Round_neon8_16_16(uint16x8_t prod) {
59 prod += vdupq_n_u16(128);
60 prod += vshrq_n_u16(prod, 8);
62 return vshrq_n_u16(prod, 8);
65 static inline uint8x8_t clamp_div255round_simd8_32(int32x4_t val1, int32x4_t val2) {
67 uint32x4_t cmp1, cmp2;
69 uint8x8_t cmp8, cmp8_1;
72 cmp1 = vcleq_s32(val1, vdupq_n_s32(0));
73 cmp2 = vcleq_s32(val2, vdupq_n_s32(0));
75 cmp16 = vmovn_high_u32(vmovn_u32(cmp1), cmp2);
77 cmp16 = vcombine_u16(vmovn_u32(cmp1), vmovn_u32(cmp2));
79 cmp8_1 = vmovn_u16(cmp16);
85 cmp1 = vcgeq_s32(val1, vdupq_n_s32(255*255));
86 cmp2 = vcgeq_s32(val2, vdupq_n_s32(255*255));
88 cmp16 = vmovn_high_u32(vmovn_u32(cmp1), cmp2);
90 cmp16 = vcombine_u16(vmovn_u32(cmp1), vmovn_u32(cmp2));
92 cmp8 = vmovn_u16(cmp16);
94 // Insert 255 where true
95 ret = vbsl_u8(cmp8, vdup_n_u8(255), ret);
98 uint8x8_t div = SkDiv255Round_neon8_32_8(val1, val2);
100 // Insert where false and previous test false
101 cmp8 = cmp8 | cmp8_1;
102 ret = vbsl_u8(cmp8, ret, div);
104 // Return the final combination
108 ////////////////////////////////////////////////////////////////////////////////
110 ////////////////////////////////////////////////////////////////////////////////
112 // kSrcATop_Mode, //!< [Da, Sc * Da + (1 - Sa) * Dc]
113 SkPMColor srcatop_modeproc_neon(SkPMColor src, SkPMColor dst) {
114 unsigned sa = SkGetPackedA32(src);
115 unsigned da = SkGetPackedA32(dst);
116 unsigned isa = 255 - sa;
118 uint8x8_t vda, visa, vsrc, vdst;
121 visa = vdup_n_u8(isa);
123 uint16x8_t vsrc_wide, vdst_wide;
124 vsrc_wide = vmull_u8(vda, vreinterpret_u8_u32(vdup_n_u32(src)));
125 vdst_wide = vmull_u8(visa, vreinterpret_u8_u32(vdup_n_u32(dst)));
127 vsrc_wide += vdupq_n_u16(128);
128 vsrc_wide += vshrq_n_u16(vsrc_wide, 8);
130 vdst_wide += vdupq_n_u16(128);
131 vdst_wide += vshrq_n_u16(vdst_wide, 8);
133 vsrc = vshrn_n_u16(vsrc_wide, 8);
134 vdst = vshrn_n_u16(vdst_wide, 8);
137 vsrc = vset_lane_u8(da, vsrc, 3);
139 return vget_lane_u32(vreinterpret_u32_u8(vsrc), 0);
142 // kDstATop_Mode, //!< [Sa, Sa * Dc + Sc * (1 - Da)]
143 SkPMColor dstatop_modeproc_neon(SkPMColor src, SkPMColor dst) {
144 unsigned sa = SkGetPackedA32(src);
145 unsigned da = SkGetPackedA32(dst);
146 unsigned ida = 255 - da;
148 uint8x8_t vsa, vida, vsrc, vdst;
151 vida = vdup_n_u8(ida);
153 uint16x8_t vsrc_wide, vdst_wide;
154 vsrc_wide = vmull_u8(vida, vreinterpret_u8_u32(vdup_n_u32(src)));
155 vdst_wide = vmull_u8(vsa, vreinterpret_u8_u32(vdup_n_u32(dst)));
157 vsrc_wide += vdupq_n_u16(128);
158 vsrc_wide += vshrq_n_u16(vsrc_wide, 8);
160 vdst_wide += vdupq_n_u16(128);
161 vdst_wide += vshrq_n_u16(vdst_wide, 8);
163 vsrc = vshrn_n_u16(vsrc_wide, 8);
164 vdst = vshrn_n_u16(vdst_wide, 8);
167 vsrc = vset_lane_u8(sa, vsrc, 3);
169 return vget_lane_u32(vreinterpret_u32_u8(vsrc), 0);
172 // kXor_Mode [Sa + Da - 2 * Sa * Da, Sc * (1 - Da) + (1 - Sa) * Dc]
173 SkPMColor xor_modeproc_neon(SkPMColor src, SkPMColor dst) {
174 unsigned sa = SkGetPackedA32(src);
175 unsigned da = SkGetPackedA32(dst);
176 unsigned ret_alpha = sa + da - (SkAlphaMulAlpha(sa, da) << 1);
177 unsigned isa = 255 - sa;
178 unsigned ida = 255 - da;
180 uint8x8_t vsrc, vdst, visa, vida;
181 uint16x8_t vsrc_wide, vdst_wide;
183 visa = vdup_n_u8(isa);
184 vida = vdup_n_u8(ida);
185 vsrc = vreinterpret_u8_u32(vdup_n_u32(src));
186 vdst = vreinterpret_u8_u32(vdup_n_u32(dst));
188 vsrc_wide = vmull_u8(vsrc, vida);
189 vdst_wide = vmull_u8(vdst, visa);
191 vsrc_wide += vdupq_n_u16(128);
192 vsrc_wide += vshrq_n_u16(vsrc_wide, 8);
194 vdst_wide += vdupq_n_u16(128);
195 vdst_wide += vshrq_n_u16(vdst_wide, 8);
197 vsrc = vshrn_n_u16(vsrc_wide, 8);
198 vdst = vshrn_n_u16(vdst_wide, 8);
202 vsrc = vset_lane_u8(ret_alpha, vsrc, 3);
204 return vget_lane_u32(vreinterpret_u32_u8(vsrc), 0);
208 SkPMColor plus_modeproc_neon(SkPMColor src, SkPMColor dst) {
209 uint8x8_t vsrc, vdst;
210 vsrc = vreinterpret_u8_u32(vdup_n_u32(src));
211 vdst = vreinterpret_u8_u32(vdup_n_u32(dst));
212 vsrc = vqadd_u8(vsrc, vdst);
214 return vget_lane_u32(vreinterpret_u32_u8(vsrc), 0);
218 SkPMColor modulate_modeproc_neon(SkPMColor src, SkPMColor dst) {
219 uint8x8_t vsrc, vdst, vres;
220 uint16x8_t vres_wide;
222 vsrc = vreinterpret_u8_u32(vdup_n_u32(src));
223 vdst = vreinterpret_u8_u32(vdup_n_u32(dst));
225 vres_wide = vmull_u8(vsrc, vdst);
227 vres_wide += vdupq_n_u16(128);
228 vres_wide += vshrq_n_u16(vres_wide, 8);
230 vres = vshrn_n_u16(vres_wide, 8);
232 return vget_lane_u32(vreinterpret_u32_u8(vres), 0);
235 ////////////////////////////////////////////////////////////////////////////////
236 // 8 pixels modeprocs
237 ////////////////////////////////////////////////////////////////////////////////
239 uint8x8x4_t dstover_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
241 uint16x8_t src_scale;
243 src_scale = vsubw_u8(vdupq_n_u16(256), dst.val[NEON_A]);
245 ret.val[NEON_A] = dst.val[NEON_A] + SkAlphaMul_neon8(src.val[NEON_A], src_scale);
246 ret.val[NEON_R] = dst.val[NEON_R] + SkAlphaMul_neon8(src.val[NEON_R], src_scale);
247 ret.val[NEON_G] = dst.val[NEON_G] + SkAlphaMul_neon8(src.val[NEON_G], src_scale);
248 ret.val[NEON_B] = dst.val[NEON_B] + SkAlphaMul_neon8(src.val[NEON_B], src_scale);
253 uint8x8x4_t srcin_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
257 scale = SkAlpha255To256_neon8(dst.val[NEON_A]);
259 ret.val[NEON_A] = SkAlphaMul_neon8(src.val[NEON_A], scale);
260 ret.val[NEON_R] = SkAlphaMul_neon8(src.val[NEON_R], scale);
261 ret.val[NEON_G] = SkAlphaMul_neon8(src.val[NEON_G], scale);
262 ret.val[NEON_B] = SkAlphaMul_neon8(src.val[NEON_B], scale);
267 uint8x8x4_t dstin_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
271 scale = SkAlpha255To256_neon8(src.val[NEON_A]);
273 ret = SkAlphaMulQ_neon8(dst, scale);
278 uint8x8x4_t srcout_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
280 uint16x8_t scale = vsubw_u8(vdupq_n_u16(256), dst.val[NEON_A]);
282 ret = SkAlphaMulQ_neon8(src, scale);
287 uint8x8x4_t dstout_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
289 uint16x8_t scale = vsubw_u8(vdupq_n_u16(256), src.val[NEON_A]);
291 ret = SkAlphaMulQ_neon8(dst, scale);
296 uint8x8x4_t srcatop_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
300 isa = vsub_u8(vdup_n_u8(255), src.val[NEON_A]);
302 ret.val[NEON_A] = dst.val[NEON_A];
303 ret.val[NEON_R] = SkAlphaMulAlpha_neon8(src.val[NEON_R], dst.val[NEON_A])
304 + SkAlphaMulAlpha_neon8(dst.val[NEON_R], isa);
305 ret.val[NEON_G] = SkAlphaMulAlpha_neon8(src.val[NEON_G], dst.val[NEON_A])
306 + SkAlphaMulAlpha_neon8(dst.val[NEON_G], isa);
307 ret.val[NEON_B] = SkAlphaMulAlpha_neon8(src.val[NEON_B], dst.val[NEON_A])
308 + SkAlphaMulAlpha_neon8(dst.val[NEON_B], isa);
313 uint8x8x4_t dstatop_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
317 ida = vsub_u8(vdup_n_u8(255), dst.val[NEON_A]);
319 ret.val[NEON_A] = src.val[NEON_A];
320 ret.val[NEON_R] = SkAlphaMulAlpha_neon8(src.val[NEON_R], ida)
321 + SkAlphaMulAlpha_neon8(dst.val[NEON_R], src.val[NEON_A]);
322 ret.val[NEON_G] = SkAlphaMulAlpha_neon8(src.val[NEON_G], ida)
323 + SkAlphaMulAlpha_neon8(dst.val[NEON_G], src.val[NEON_A]);
324 ret.val[NEON_B] = SkAlphaMulAlpha_neon8(src.val[NEON_B], ida)
325 + SkAlphaMulAlpha_neon8(dst.val[NEON_B], src.val[NEON_A]);
330 uint8x8x4_t xor_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
333 uint16x8_t tmp_wide, tmp_wide2;
335 isa = vsub_u8(vdup_n_u8(255), src.val[NEON_A]);
336 ida = vsub_u8(vdup_n_u8(255), dst.val[NEON_A]);
339 tmp_wide = vmovl_u8(src.val[NEON_A]);
340 tmp_wide = vaddw_u8(tmp_wide, dst.val[NEON_A]);
341 tmp_wide2 = vshll_n_u8(SkAlphaMulAlpha_neon8(src.val[NEON_A], dst.val[NEON_A]), 1);
342 tmp_wide = vsubq_u16(tmp_wide, tmp_wide2);
343 ret.val[NEON_A] = vmovn_u16(tmp_wide);
346 ret.val[NEON_R] = SkAlphaMulAlpha_neon8(src.val[NEON_R], ida)
347 + SkAlphaMulAlpha_neon8(dst.val[NEON_R], isa);
348 ret.val[NEON_G] = SkAlphaMulAlpha_neon8(src.val[NEON_G], ida)
349 + SkAlphaMulAlpha_neon8(dst.val[NEON_G], isa);
350 ret.val[NEON_B] = SkAlphaMulAlpha_neon8(src.val[NEON_B], ida)
351 + SkAlphaMulAlpha_neon8(dst.val[NEON_B], isa);
356 uint8x8x4_t plus_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
359 ret.val[NEON_A] = vqadd_u8(src.val[NEON_A], dst.val[NEON_A]);
360 ret.val[NEON_R] = vqadd_u8(src.val[NEON_R], dst.val[NEON_R]);
361 ret.val[NEON_G] = vqadd_u8(src.val[NEON_G], dst.val[NEON_G]);
362 ret.val[NEON_B] = vqadd_u8(src.val[NEON_B], dst.val[NEON_B]);
367 uint8x8x4_t modulate_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
370 ret.val[NEON_A] = SkAlphaMulAlpha_neon8(src.val[NEON_A], dst.val[NEON_A]);
371 ret.val[NEON_R] = SkAlphaMulAlpha_neon8(src.val[NEON_R], dst.val[NEON_R]);
372 ret.val[NEON_G] = SkAlphaMulAlpha_neon8(src.val[NEON_G], dst.val[NEON_G]);
373 ret.val[NEON_B] = SkAlphaMulAlpha_neon8(src.val[NEON_B], dst.val[NEON_B]);
378 static inline uint8x8_t srcover_color(uint8x8_t a, uint8x8_t b) {
381 tmp = vaddl_u8(a, b);
382 tmp -= SkAlphaMulAlpha_neon8_16(a, b);
384 return vmovn_u16(tmp);
387 uint8x8x4_t screen_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
390 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
391 ret.val[NEON_R] = srcover_color(src.val[NEON_R], dst.val[NEON_R]);
392 ret.val[NEON_G] = srcover_color(src.val[NEON_G], dst.val[NEON_G]);
393 ret.val[NEON_B] = srcover_color(src.val[NEON_B], dst.val[NEON_B]);
398 template <bool overlay>
399 static inline uint8x8_t overlay_hardlight_color(uint8x8_t sc, uint8x8_t dc,
400 uint8x8_t sa, uint8x8_t da) {
402 * In the end we're gonna use (rc + tmp) with a different rc
403 * coming from an alternative.
404 * The whole value (rc + tmp) can always be expressed as
405 * VAL = COM - SUB in the if case
406 * VAL = COM + SUB - sa*da in the else case
408 * with COM = 255 * (sc + dc)
409 * and SUB = sc*da + dc*sa - 2*dc*sc
412 // Prepare common subexpressions
413 uint16x8_t const255 = vdupq_n_u16(255);
414 uint16x8_t sc_plus_dc = vaddl_u8(sc, dc);
415 uint16x8_t scda = vmull_u8(sc, da);
416 uint16x8_t dcsa = vmull_u8(dc, sa);
417 uint16x8_t sada = vmull_u8(sa, da);
419 // Prepare non common subexpressions
421 uint32x4_t scdc2_1, scdc2_2;
423 dc2 = vshll_n_u8(dc, 1);
424 scdc2_1 = vmull_u16(vget_low_u16(dc2), vget_low_u16(vmovl_u8(sc)));
426 scdc2_2 = vmull_high_u16(dc2, vmovl_u8(sc));
428 scdc2_2 = vmull_u16(vget_high_u16(dc2), vget_high_u16(vmovl_u8(sc)));
431 sc2 = vshll_n_u8(sc, 1);
432 scdc2_1 = vmull_u16(vget_low_u16(sc2), vget_low_u16(vmovl_u8(dc)));
434 scdc2_2 = vmull_high_u16(sc2, vmovl_u8(dc));
436 scdc2_2 = vmull_u16(vget_high_u16(sc2), vget_high_u16(vmovl_u8(dc)));
441 int32x4_t com1, com2;
442 com1 = vreinterpretq_s32_u32(
443 vmull_u16(vget_low_u16(const255), vget_low_u16(sc_plus_dc)));
444 com2 = vreinterpretq_s32_u32(
446 vmull_high_u16(const255, sc_plus_dc));
448 vmull_u16(vget_high_u16(const255), vget_high_u16(sc_plus_dc)));
452 int32x4_t sub1, sub2;
453 sub1 = vreinterpretq_s32_u32(vaddl_u16(vget_low_u16(scda), vget_low_u16(dcsa)));
455 sub2 = vreinterpretq_s32_u32(vaddl_high_u16(scda, dcsa));
457 sub2 = vreinterpretq_s32_u32(vaddl_u16(vget_high_u16(scda), vget_high_u16(dcsa)));
459 sub1 = vsubq_s32(sub1, vreinterpretq_s32_u32(scdc2_1));
460 sub2 = vsubq_s32(sub2, vreinterpretq_s32_u32(scdc2_2));
462 // Compare 2*dc <= da
466 cmp = vcleq_u16(dc2, vmovl_u8(da));
468 cmp = vcleq_u16(sc2, vmovl_u8(sa));
472 int32x4_t val1_1, val1_2;
473 int32x4_t val2_1, val2_2;
474 uint32x4_t cmp1, cmp2;
476 // Doing a signed lengthening allows to save a few instructions
477 // thanks to sign extension.
478 cmp1 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_low_u16(cmp))));
480 cmp2 = vreinterpretq_u32_s32(vmovl_high_s16(vreinterpretq_s16_u16(cmp)));
482 cmp2 = vreinterpretq_u32_s32(vmovl_s16(vreinterpret_s16_u16(vget_high_u16(cmp))));
486 val1_1 = com1 - sub1;
487 val1_2 = com2 - sub2;
489 // Calc COM + SUB - sa*da
490 val2_1 = com1 + sub1;
491 val2_2 = com2 + sub2;
493 val2_1 = vsubq_s32(val2_1, vreinterpretq_s32_u32(vmovl_u16(vget_low_u16(sada))));
495 val2_2 = vsubq_s32(val2_2, vreinterpretq_s32_u32(vmovl_high_u16(sada)));
497 val2_2 = vsubq_s32(val2_2, vreinterpretq_s32_u32(vmovl_u16(vget_high_u16(sada))));
500 // Insert where needed
501 val1_1 = vbslq_s32(cmp1, val1_1, val2_1);
502 val1_2 = vbslq_s32(cmp2, val1_2, val2_2);
504 // Call the clamp_div255round function
505 return clamp_div255round_simd8_32(val1_1, val1_2);
508 static inline uint8x8_t overlay_color(uint8x8_t sc, uint8x8_t dc,
509 uint8x8_t sa, uint8x8_t da) {
510 return overlay_hardlight_color<true>(sc, dc, sa, da);
513 uint8x8x4_t overlay_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
516 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
517 ret.val[NEON_R] = overlay_color(src.val[NEON_R], dst.val[NEON_R],
518 src.val[NEON_A], dst.val[NEON_A]);
519 ret.val[NEON_G] = overlay_color(src.val[NEON_G], dst.val[NEON_G],
520 src.val[NEON_A], dst.val[NEON_A]);
521 ret.val[NEON_B] = overlay_color(src.val[NEON_B], dst.val[NEON_B],
522 src.val[NEON_A], dst.val[NEON_A]);
527 template <bool lighten>
528 static inline uint8x8_t lighten_darken_color(uint8x8_t sc, uint8x8_t dc,
529 uint8x8_t sa, uint8x8_t da) {
530 uint16x8_t sd, ds, cmp, tmp, tmp2;
533 sd = vmull_u8(sc, da);
534 ds = vmull_u8(dc, sa);
538 cmp = vcgtq_u16(sd, ds);
540 cmp = vcltq_u16(sd, ds);
544 tmp = vaddl_u8(sc, dc);
546 tmp -= SkDiv255Round_neon8_16_16(ds);
549 tmp2 -= SkDiv255Round_neon8_16_16(sd);
551 // Insert where needed
552 tmp = vbslq_u16(cmp, tmp, tmp2);
554 return vmovn_u16(tmp);
557 static inline uint8x8_t darken_color(uint8x8_t sc, uint8x8_t dc,
558 uint8x8_t sa, uint8x8_t da) {
559 return lighten_darken_color<false>(sc, dc, sa, da);
562 uint8x8x4_t darken_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
565 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
566 ret.val[NEON_R] = darken_color(src.val[NEON_R], dst.val[NEON_R],
567 src.val[NEON_A], dst.val[NEON_A]);
568 ret.val[NEON_G] = darken_color(src.val[NEON_G], dst.val[NEON_G],
569 src.val[NEON_A], dst.val[NEON_A]);
570 ret.val[NEON_B] = darken_color(src.val[NEON_B], dst.val[NEON_B],
571 src.val[NEON_A], dst.val[NEON_A]);
576 static inline uint8x8_t lighten_color(uint8x8_t sc, uint8x8_t dc,
577 uint8x8_t sa, uint8x8_t da) {
578 return lighten_darken_color<true>(sc, dc, sa, da);
581 uint8x8x4_t lighten_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
584 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
585 ret.val[NEON_R] = lighten_color(src.val[NEON_R], dst.val[NEON_R],
586 src.val[NEON_A], dst.val[NEON_A]);
587 ret.val[NEON_G] = lighten_color(src.val[NEON_G], dst.val[NEON_G],
588 src.val[NEON_A], dst.val[NEON_A]);
589 ret.val[NEON_B] = lighten_color(src.val[NEON_B], dst.val[NEON_B],
590 src.val[NEON_A], dst.val[NEON_A]);
595 static inline uint8x8_t hardlight_color(uint8x8_t sc, uint8x8_t dc,
596 uint8x8_t sa, uint8x8_t da) {
597 return overlay_hardlight_color<false>(sc, dc, sa, da);
600 uint8x8x4_t hardlight_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
603 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
604 ret.val[NEON_R] = hardlight_color(src.val[NEON_R], dst.val[NEON_R],
605 src.val[NEON_A], dst.val[NEON_A]);
606 ret.val[NEON_G] = hardlight_color(src.val[NEON_G], dst.val[NEON_G],
607 src.val[NEON_A], dst.val[NEON_A]);
608 ret.val[NEON_B] = hardlight_color(src.val[NEON_B], dst.val[NEON_B],
609 src.val[NEON_A], dst.val[NEON_A]);
614 static inline uint8x8_t difference_color(uint8x8_t sc, uint8x8_t dc,
615 uint8x8_t sa, uint8x8_t da) {
616 uint16x8_t sd, ds, tmp;
619 sd = vmull_u8(sc, da);
620 ds = vmull_u8(dc, sa);
622 tmp = vminq_u16(sd, ds);
623 tmp = SkDiv255Round_neon8_16_16(tmp);
624 tmp = vshlq_n_u16(tmp, 1);
626 val = vreinterpretq_s16_u16(vaddl_u8(sc, dc));
628 val -= vreinterpretq_s16_u16(tmp);
630 val = vmaxq_s16(val, vdupq_n_s16(0));
631 val = vminq_s16(val, vdupq_n_s16(255));
633 return vmovn_u16(vreinterpretq_u16_s16(val));
636 uint8x8x4_t difference_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
639 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
640 ret.val[NEON_R] = difference_color(src.val[NEON_R], dst.val[NEON_R],
641 src.val[NEON_A], dst.val[NEON_A]);
642 ret.val[NEON_G] = difference_color(src.val[NEON_G], dst.val[NEON_G],
643 src.val[NEON_A], dst.val[NEON_A]);
644 ret.val[NEON_B] = difference_color(src.val[NEON_B], dst.val[NEON_B],
645 src.val[NEON_A], dst.val[NEON_A]);
650 static inline uint8x8_t exclusion_color(uint8x8_t sc, uint8x8_t dc,
651 uint8x8_t sa, uint8x8_t da) {
652 /* The equation can be simplified to 255(sc + dc) - 2 * sc * dc */
654 uint16x8_t sc_plus_dc, scdc, const255;
655 int32x4_t term1_1, term1_2, term2_1, term2_2;
657 /* Calc (sc + dc) and (sc * dc) */
658 sc_plus_dc = vaddl_u8(sc, dc);
659 scdc = vmull_u8(sc, dc);
661 /* Prepare constants */
662 const255 = vdupq_n_u16(255);
664 /* Calc the first term */
665 term1_1 = vreinterpretq_s32_u32(
666 vmull_u16(vget_low_u16(const255), vget_low_u16(sc_plus_dc)));
667 term1_2 = vreinterpretq_s32_u32(
669 vmull_high_u16(const255, sc_plus_dc));
671 vmull_u16(vget_high_u16(const255), vget_high_u16(sc_plus_dc)));
674 /* Calc the second term */
675 term2_1 = vreinterpretq_s32_u32(vshll_n_u16(vget_low_u16(scdc), 1));
677 term2_2 = vreinterpretq_s32_u32(vshll_high_n_u16(scdc, 1));
679 term2_2 = vreinterpretq_s32_u32(vshll_n_u16(vget_high_u16(scdc), 1));
682 return clamp_div255round_simd8_32(term1_1 - term2_1, term1_2 - term2_2);
685 uint8x8x4_t exclusion_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
688 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
689 ret.val[NEON_R] = exclusion_color(src.val[NEON_R], dst.val[NEON_R],
690 src.val[NEON_A], dst.val[NEON_A]);
691 ret.val[NEON_G] = exclusion_color(src.val[NEON_G], dst.val[NEON_G],
692 src.val[NEON_A], dst.val[NEON_A]);
693 ret.val[NEON_B] = exclusion_color(src.val[NEON_B], dst.val[NEON_B],
694 src.val[NEON_A], dst.val[NEON_A]);
699 static inline uint8x8_t blendfunc_multiply_color(uint8x8_t sc, uint8x8_t dc,
700 uint8x8_t sa, uint8x8_t da) {
701 uint32x4_t val1, val2;
702 uint16x8_t scdc, t1, t2;
704 t1 = vmull_u8(sc, vdup_n_u8(255) - da);
705 t2 = vmull_u8(dc, vdup_n_u8(255) - sa);
706 scdc = vmull_u8(sc, dc);
708 val1 = vaddl_u16(vget_low_u16(t1), vget_low_u16(t2));
710 val2 = vaddl_high_u16(t1, t2);
712 val2 = vaddl_u16(vget_high_u16(t1), vget_high_u16(t2));
715 val1 = vaddw_u16(val1, vget_low_u16(scdc));
717 val2 = vaddw_high_u16(val2, scdc);
719 val2 = vaddw_u16(val2, vget_high_u16(scdc));
722 return clamp_div255round_simd8_32(
723 vreinterpretq_s32_u32(val1), vreinterpretq_s32_u32(val2));
726 uint8x8x4_t multiply_modeproc_neon8(uint8x8x4_t src, uint8x8x4_t dst) {
729 ret.val[NEON_A] = srcover_color(src.val[NEON_A], dst.val[NEON_A]);
730 ret.val[NEON_R] = blendfunc_multiply_color(src.val[NEON_R], dst.val[NEON_R],
731 src.val[NEON_A], dst.val[NEON_A]);
732 ret.val[NEON_G] = blendfunc_multiply_color(src.val[NEON_G], dst.val[NEON_G],
733 src.val[NEON_A], dst.val[NEON_A]);
734 ret.val[NEON_B] = blendfunc_multiply_color(src.val[NEON_B], dst.val[NEON_B],
735 src.val[NEON_A], dst.val[NEON_A]);
740 ////////////////////////////////////////////////////////////////////////////////
742 typedef uint8x8x4_t (*SkXfermodeProcSIMD)(uint8x8x4_t src, uint8x8x4_t dst);
744 extern SkXfermodeProcSIMD gNEONXfermodeProcs[];
746 SkNEONProcCoeffXfermode::SkNEONProcCoeffXfermode(SkReadBuffer& buffer)
747 : INHERITED(buffer) {
748 fProcSIMD = reinterpret_cast<void*>(gNEONXfermodeProcs[this->getMode()]);
751 void SkNEONProcCoeffXfermode::xfer32(SkPMColor dst[], const SkPMColor src[],
752 int count, const SkAlpha aa[]) const {
753 SkASSERT(dst && src && count >= 0);
755 SkXfermodeProc proc = this->getProc();
756 SkXfermodeProcSIMD procSIMD = reinterpret_cast<SkXfermodeProcSIMD>(fProcSIMD);
757 SkASSERT(procSIMD != NULL);
760 // Unrolled NEON code
762 uint8x8x4_t vsrc, vdst, vres;
765 vsrc = vld4_u8((uint8_t*)src);
766 vdst = vld4_u8((uint8_t*)dst);
768 #if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 6))
770 "vld4.u8 %h[vsrc], [%[src]]! \t\n"
771 "vld4.u8 %h[vdst], [%[dst]] \t\n"
772 : [vsrc] "=w" (vsrc), [vdst] "=w" (vdst), [src] "+&r" (src)
777 register uint8x8_t d0 asm("d0");
778 register uint8x8_t d1 asm("d1");
779 register uint8x8_t d2 asm("d2");
780 register uint8x8_t d3 asm("d3");
781 register uint8x8_t d4 asm("d4");
782 register uint8x8_t d5 asm("d5");
783 register uint8x8_t d6 asm("d6");
784 register uint8x8_t d7 asm("d7");
787 "vld4.u8 {d0-d3},[%[src]]!;"
788 "vld4.u8 {d4-d7},[%[dst]];"
789 : "=w" (d0), "=w" (d1), "=w" (d2), "=w" (d3),
790 "=w" (d4), "=w" (d5), "=w" (d6), "=w" (d7),
795 vsrc.val[0] = d0; vdst.val[0] = d4;
796 vsrc.val[1] = d1; vdst.val[1] = d5;
797 vsrc.val[2] = d2; vdst.val[2] = d6;
798 vsrc.val[3] = d3; vdst.val[3] = d7;
800 #endif // #ifdef SK_CPU_ARM64
802 vres = procSIMD(vsrc, vdst);
804 vst4_u8((uint8_t*)dst, vres);
813 for (int i = 0; i < count; i++) {
814 dst[i] = proc(src[i], dst[i]);
817 for (int i = count - 1; i >= 0; --i) {
820 SkPMColor dstC = dst[i];
821 SkPMColor C = proc(src[i], dstC);
823 C = SkFourByteInterp_neon(C, dstC, a);
831 void SkNEONProcCoeffXfermode::xfer16(uint16_t* SK_RESTRICT dst,
832 const SkPMColor* SK_RESTRICT src, int count,
833 const SkAlpha* SK_RESTRICT aa) const {
834 SkASSERT(dst && src && count >= 0);
836 SkXfermodeProc proc = this->getProc();
837 SkXfermodeProcSIMD procSIMD = reinterpret_cast<SkXfermodeProcSIMD>(fProcSIMD);
838 SkASSERT(procSIMD != NULL);
842 uint16x8_t vdst, vres16;
843 uint8x8x4_t vdst32, vsrc, vres;
845 vdst = vld1q_u16(dst);
848 vsrc = vld4_u8((uint8_t*)src);
850 #if (__GNUC__ > 4) || ((__GNUC__ == 4) && (__GNUC_MINOR__ > 6))
852 "vld4.u8 %h[vsrc], [%[src]]! \t\n"
853 : [vsrc] "=w" (vsrc), [src] "+&r" (src)
857 register uint8x8_t d0 asm("d0");
858 register uint8x8_t d1 asm("d1");
859 register uint8x8_t d2 asm("d2");
860 register uint8x8_t d3 asm("d3");
863 "vld4.u8 {d0-d3},[%[src]]!;"
864 : "=w" (d0), "=w" (d1), "=w" (d2), "=w" (d3),
873 #endif // #ifdef SK_CPU_ARM64
875 vdst32 = SkPixel16ToPixel32_neon8(vdst);
876 vres = procSIMD(vsrc, vdst32);
877 vres16 = SkPixel32ToPixel16_neon8(vres);
879 vst1q_u16(dst, vres16);
887 for (int i = 0; i < count; i++) {
888 SkPMColor dstC = SkPixel16ToPixel32(dst[i]);
889 dst[i] = SkPixel32ToPixel16_ToU16(proc(src[i], dstC));
892 for (int i = count - 1; i >= 0; --i) {
895 SkPMColor dstC = SkPixel16ToPixel32(dst[i]);
896 SkPMColor C = proc(src[i], dstC);
898 C = SkFourByteInterp_neon(C, dstC, a);
900 dst[i] = SkPixel32ToPixel16_ToU16(C);
906 #ifndef SK_IGNORE_TO_STRING
907 void SkNEONProcCoeffXfermode::toString(SkString* str) const {
908 this->INHERITED::toString(str);
912 ////////////////////////////////////////////////////////////////////////////////
914 SkXfermodeProcSIMD gNEONXfermodeProcs[] = {
918 NULL, // kSrcOver_Mode
919 dstover_modeproc_neon8,
920 srcin_modeproc_neon8,
921 dstin_modeproc_neon8,
922 srcout_modeproc_neon8,
923 dstout_modeproc_neon8,
924 srcatop_modeproc_neon8,
925 dstatop_modeproc_neon8,
928 modulate_modeproc_neon8,
929 screen_modeproc_neon8,
931 overlay_modeproc_neon8,
932 darken_modeproc_neon8,
933 lighten_modeproc_neon8,
934 NULL, // kColorDodge_Mode
935 NULL, // kColorBurn_Mode
936 hardlight_modeproc_neon8,
937 NULL, // kSoftLight_Mode
938 difference_modeproc_neon8,
939 exclusion_modeproc_neon8,
940 multiply_modeproc_neon8,
943 NULL, // kSaturation_Mode
945 NULL, // kLuminosity_Mode
949 SK_ARRAY_COUNT(gNEONXfermodeProcs) == SkXfermode::kLastMode + 1,
953 SkXfermodeProc gNEONXfermodeProcs1[] = {
957 NULL, // kSrcOver_Mode
958 NULL, // kDstOver_Mode
961 NULL, // kSrcOut_Mode
962 NULL, // kDstOut_Mode
963 srcatop_modeproc_neon,
964 dstatop_modeproc_neon,
967 modulate_modeproc_neon,
968 NULL, // kScreen_Mode
970 NULL, // kOverlay_Mode
971 NULL, // kDarken_Mode
972 NULL, // kLighten_Mode
973 NULL, // kColorDodge_Mode
974 NULL, // kColorBurn_Mode
975 NULL, // kHardLight_Mode
976 NULL, // kSoftLight_Mode
977 NULL, // kDifference_Mode
978 NULL, // kExclusion_Mode
979 NULL, // kMultiply_Mode
982 NULL, // kSaturation_Mode
984 NULL, // kLuminosity_Mode
988 SK_ARRAY_COUNT(gNEONXfermodeProcs1) == SkXfermode::kLastMode + 1,
992 SkProcCoeffXfermode* SkPlatformXfermodeFactory_impl_neon(const ProcCoeff& rec,
993 SkXfermode::Mode mode) {
995 void* procSIMD = reinterpret_cast<void*>(gNEONXfermodeProcs[mode]);
997 if (procSIMD != NULL) {
998 return SkNEW_ARGS(SkNEONProcCoeffXfermode, (rec, mode, procSIMD));
1003 SkXfermodeProc SkPlatformXfermodeProcFactory_impl_neon(SkXfermode::Mode mode) {
1004 return gNEONXfermodeProcs1[mode];