rav1e 0.4.0-alpha

The fastest and safest AV1 encoder
Documentation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400
1401
1402
1403
1404
1405
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502
1503
1504
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
1551
1552
1553
1554
1555
1556
1557
1558
1559
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577
1578
1579
1580
1581
1582
1583
1584
1585
1586
1587
1588
1589
1590
1591
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
1647
1648
1649
1650
1651
1652
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
1691
1692
1693
1694
1695
1696
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
1793
1794
1795
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
1808
1809
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
1828
1829
1830
1831
1832
1833
1834
1835
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
1846
1847
1848
1849
1850
1851
1852
1853
1854
1855
1856
1857
1858
1859
1860
1861
1862
1863
1864
1865
1866
1867
1868
1869
1870
1871
1872
1873
1874
1875
1876
1877
1878
1879
1880
1881
1882
1883
1884
1885
1886
1887
1888
1889
1890
1891
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027
2028
2029
2030
2031
2032
2033
2034
2035
2036
2037
2038
2039
2040
2041
2042
2043
2044
2045
2046
2047
2048
2049
2050
2051
2052
2053
2054
2055
2056
2057
2058
2059
2060
2061
2062
2063
2064
2065
2066
2067
2068
2069
2070
2071
2072
2073
2074
2075
2076
2077
2078
2079
2080
2081
2082
2083
2084
2085
2086
2087
2088
2089
2090
2091
2092
2093
2094
2095
2096
2097
2098
2099
2100
2101
2102
2103
2104
2105
2106
2107
2108
2109
2110
2111
2112
2113
2114
2115
2116
2117
2118
2119
2120
2121
2122
2123
2124
2125
2126
2127
2128
2129
2130
2131
2132
2133
2134
2135
2136
2137
2138
2139
2140
2141
2142
2143
2144
2145
2146
2147
2148
2149
2150
2151
2152
2153
2154
2155
2156
2157
2158
2159
2160
2161
2162
2163
2164
2165
2166
2167
2168
2169
2170
2171
2172
2173
2174
2175
2176
2177
2178
2179
2180
2181
2182
2183
2184
2185
2186
2187
2188
2189
2190
2191
2192
2193
2194
2195
2196
2197
2198
2199
2200
2201
2202
2203
2204
2205
2206
2207
2208
2209
2210
2211
2212
2213
2214
2215
2216
2217
2218
2219
2220
2221
2222
2223
2224
2225
2226
2227
2228
2229
2230
2231
2232
2233
2234
2235
2236
2237
2238
2239
2240
2241
2242
2243
2244
2245
2246
2247
2248
2249
2250
2251
2252
2253
2254
2255
2256
2257
2258
2259
2260
2261
2262
2263
2264
2265
2266
2267
2268
2269
2270
2271
2272
2273
2274
2275
2276
2277
2278
2279
2280
2281
2282
2283
2284
2285
2286
2287
2288
2289
2290
2291
2292
2293
2294
2295
2296
2297
2298
2299
2300
2301
2302
2303
2304
2305
2306
2307
2308
2309
2310
2311
2312
2313
2314
2315
2316
2317
2318
2319
2320
2321
2322
2323
2324
2325
2326
2327
2328
2329
2330
2331
2332
2333
2334
2335
2336
2337
2338
2339
2340
2341
2342
2343
2344
2345
2346
2347
2348
2349
2350
2351
2352
2353
2354
2355
2356
2357
2358
2359
2360
2361
2362
2363
2364
2365
2366
2367
2368
2369
2370
2371
2372
2373
2374
2375
2376
2377
2378
2379
2380
2381
2382
2383
2384
2385
2386
2387
2388
2389
2390
2391
2392
2393
2394
2395
2396
2397
2398
2399
2400
2401
2402
2403
2404
; Copyright © 2019, VideoLAN and dav1d authors
; Copyright © 2019, Two Orioles, LLC
; All rights reserved.
;
; Redistribution and use in source and binary forms, with or without
; modification, are permitted provided that the following conditions are met:
;
; 1. Redistributions of source code must retain the above copyright notice, this
;    list of conditions and the following disclaimer.
;
; 2. Redistributions in binary form must reproduce the above copyright notice,
;    this list of conditions and the following disclaimer in the documentation
;    and/or other materials provided with the distribution.
;
; THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
; WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
; DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
; ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
; (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
; ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
; (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
; SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

%include "ext/x86/x86inc.asm"

%if ARCH_X86_64

SECTION_RODATA 32
pb_8x_27_17_8x_17_27: times 8 db 27, 17
                      times 8 db 17, 27
pw_1024: times 16 dw 1024
pb_mask: db 0, 0x80, 0x80, 0, 0x80, 0, 0, 0x80, 0x80, 0, 0, 0x80, 0, 0x80, 0x80, 0
rnd_next_upperbit_mask: dw 0x100B, 0x2016, 0x402C, 0x8058
byte_blend: db 0, 0, 0, 0xff, 0, 0, 0, 0
pw_seed_xor: times 2 dw 0xb524
             times 2 dw 0x49d8
pd_m65536: dd ~0xffff
pb_23_22: times 2 db 23, 22
pb_1: times 4 db 1
hmul_bits: dw 32768, 16384, 8192, 4096
round: dw 2048, 1024, 512
mul_bits: dw 256, 128, 64, 32, 16
round_vals: dw 32, 64, 128, 256, 512
max: dw 255, 240, 235
min: dw 0, 16
pb_27_17_17_27: db 27, 17, 17, 27
pw_1: dw 1

%macro JMP_TABLE 1-*
    %xdefine %1_table %%table
    %xdefine %%base %1_table
    %xdefine %%prefix mangle(private_prefix %+ _%1)
    %%table:
    %rep %0 - 1
        dd %%prefix %+ .ar%2 - %%base
        %rotate 1
    %endrep
%endmacro

ALIGN 4
JMP_TABLE generate_grain_y_avx2, 0, 1, 2, 3
JMP_TABLE generate_grain_uv_420_avx2, 0, 1, 2, 3
JMP_TABLE generate_grain_uv_422_avx2, 0, 1, 2, 3
JMP_TABLE generate_grain_uv_444_avx2, 0, 1, 2, 3

struc FGData
    .seed:                      resd 1
    .num_y_points:              resd 1
    .y_points:                  resb 14 * 2
    .chroma_scaling_from_luma:  resd 1
    .num_uv_points:             resd 2
    .uv_points:                 resb 2 * 10 * 2
    .scaling_shift:             resd 1
    .ar_coeff_lag:              resd 1
    .ar_coeffs_y:               resb 24
    .ar_coeffs_uv:              resb 2 * 28 ; includes padding
    .ar_coeff_shift:            resq 1
    .grain_scale_shift:         resd 1
    .uv_mult:                   resd 2
    .uv_luma_mult:              resd 2
    .uv_offset:                 resd 2
    .overlap_flag:              resd 1
    .clip_to_restricted_range:  resd 1
endstruc

cextern gaussian_sequence

SECTION .text

INIT_XMM avx2
cglobal generate_grain_y, 2, 9, 16, buf, fg_data
    lea              r4, [pb_mask]
%define base r4-pb_mask
    movq            xm1, [base+rnd_next_upperbit_mask]
    movq            xm4, [base+mul_bits]
    movq            xm7, [base+hmul_bits]
    mov             r2d, [fg_dataq+FGData.grain_scale_shift]
    vpbroadcastw    xm8, [base+round+r2*2]
    mova            xm5, [base+pb_mask]
    vpbroadcastw    xm0, [fg_dataq+FGData.seed]
    vpbroadcastd    xm9, [base+pd_m65536]
    mov              r2, -73*82
    sub            bufq, r2
    lea              r3, [gaussian_sequence]
.loop:
    pand            xm2, xm0, xm1
    psrlw           xm3, xm2, 10
    por             xm2, xm3            ; bits 0xf, 0x1e, 0x3c and 0x78 are set
    pmullw          xm2, xm4            ; bits 0x0f00 are set
    pshufb          xm2, xm5, xm2       ; set 15th bit for next 4 seeds
    psllq           xm6, xm2, 30
    por             xm2, xm6
    psllq           xm6, xm2, 15
    por             xm2, xm6            ; aggregate each bit into next seed's high bit
    pmulhuw         xm3, xm0, xm7
    por             xm2, xm3            ; 4 next output seeds
    pshuflw         xm0, xm2, q3333
    psrlw           xm2, 5
    pmovzxwd        xm3, xm2
    mova            xm6, xm9
    vpgatherdd      xm2, [r3+xm3*2], xm6
    pandn           xm2, xm9, xm2
    packusdw        xm2, xm2
    pmulhrsw        xm2, xm8
    packsswb        xm2, xm2
    movd      [bufq+r2], xm2
    add              r2, 4
    jl .loop

    ; auto-regression code
    movsxd           r2, [fg_dataq+FGData.ar_coeff_lag]
    movsxd           r2, [base+generate_grain_y_avx2_table+r2*4]
    lea              r2, [r2+base+generate_grain_y_avx2_table]
    jmp              r2

.ar1:
    DEFINE_ARGS buf, fg_data, cf3, shift, val3, min, max, x, val0
    mov          shiftd, [fg_dataq+FGData.ar_coeff_shift]
    movsx          cf3d, byte [fg_dataq+FGData.ar_coeffs_y+3]
    movd            xm4, [fg_dataq+FGData.ar_coeffs_y]
    DEFINE_ARGS buf, h, cf3, shift, val3, min, max, x, val0
    pinsrb          xm4, [pb_1], 3
    pmovsxbw        xm4, xm4
    pshufd          xm5, xm4, q1111
    pshufd          xm4, xm4, q0000
    vpbroadcastw    xm3, [base+round_vals+shiftq*2-12]    ; rnd
    sub            bufq, 82*73-(82*3+79)
    mov              hd, 70
    mov            mind, -128
    mov            maxd, 127
.y_loop_ar1:
    mov              xq, -76
    movsx         val3d, byte [bufq+xq-1]
.x_loop_ar1:
    pmovsxbw        xm0, [bufq+xq-82-1]     ; top/left
    pmovsxbw        xm2, [bufq+xq-82+0]     ; top
    pmovsxbw        xm1, [bufq+xq-82+1]     ; top/right
    punpcklwd       xm0, xm2
    punpcklwd       xm1, xm3
    pmaddwd         xm0, xm4
    pmaddwd         xm1, xm5
    paddd           xm0, xm1
.x_loop_ar1_inner:
    movd          val0d, xm0
    psrldq          xm0, 4
    imul          val3d, cf3d
    add           val3d, val0d
%if WIN64
    sarx          val3d, val3d, shiftd
%else
    sar           val3d, shiftb
%endif
    movsx         val0d, byte [bufq+xq]
    add           val3d, val0d
    cmp           val3d, maxd
    cmovns        val3d, maxd
    cmp           val3d, mind
    cmovs         val3d, mind
    mov  byte [bufq+xq], val3b
    ; keep val3d in-place as left for next x iteration
    inc              xq
    jz .x_loop_ar1_end
    test             xq, 3
    jnz .x_loop_ar1_inner
    jmp .x_loop_ar1

.x_loop_ar1_end:
    add            bufq, 82
    dec              hd
    jg .y_loop_ar1
.ar0:
    RET

.ar2:
    DEFINE_ARGS buf, fg_data, shift
    mov          shiftd, [fg_dataq+FGData.ar_coeff_shift]
    vpbroadcastw   xm14, [base+round_vals-12+shiftq*2]
    movq           xm15, [base+byte_blend+1]
    pmovsxbw        xm8, [fg_dataq+FGData.ar_coeffs_y+0]    ; cf0-7
    movd            xm9, [fg_dataq+FGData.ar_coeffs_y+8]    ; cf8-11
    pmovsxbw        xm9, xm9
    DEFINE_ARGS buf, fg_data, h, x
    pshufd         xm12, xm9, q0000
    pshufd         xm13, xm9, q1111
    pshufd         xm11, xm8, q3333
    pshufd         xm10, xm8, q2222
    pshufd          xm9, xm8, q1111
    pshufd          xm8, xm8, q0000
    pmovzxwd       xm14, xm14
    sub            bufq, 82*73-(82*3+79)
    mov              hd, 70
.y_loop_ar2:
    mov              xq, -76

.x_loop_ar2:
    pmovsxbw        xm0, [bufq+xq-82*2-2]   ; y=-2,x=[-2,+5]
    pmovsxbw        xm1, [bufq+xq-82*1-2]   ; y=-1,x=[-2,+5]
    psrldq          xm2, xm0, 2             ; y=-2,x=[-1,+5]
    psrldq          xm3, xm1, 2             ; y=-1,x=[-1,+5]
    psrldq          xm4, xm1, 4             ; y=-1,x=[+0,+5]
    punpcklwd       xm2, xm0, xm2
    punpcklwd       xm3, xm4
    pmaddwd         xm2, xm8
    pmaddwd         xm3, xm11
    paddd           xm2, xm3

    psrldq          xm4, xm0, 4             ; y=-2,x=[+0,+5]
    psrldq          xm5, xm0, 6             ; y=-2,x=[+1,+5]
    psrldq          xm6, xm0, 8             ; y=-2,x=[+2,+5]
    punpcklwd       xm4, xm5
    punpcklwd       xm6, xm1
    psrldq          xm7, xm1, 6             ; y=-1,x=[+1,+5]
    psrldq          xm1, xm1, 8             ; y=-1,x=[+2,+5]
    punpcklwd       xm7, xm1
    pmaddwd         xm4, xm9
    pmaddwd         xm6, xm10
    pmaddwd         xm7, xm12
    paddd           xm4, xm6
    paddd           xm2, xm7
    paddd           xm2, xm4
    paddd           xm2, xm14

    movq            xm0, [bufq+xq-2]        ; y=0,x=[-2,+5]
.x_loop_ar2_inner:
    pmovsxbw        xm1, xm0
    pmaddwd         xm3, xm1, xm13
    paddd           xm3, xm2
    psrldq          xm1, 4                  ; y=0,x=0
    psrldq          xm2, 4                  ; shift top to next pixel
    psrad           xm3, [fg_dataq+FGData.ar_coeff_shift]
    ; don't packssdw since we only care about one value
    paddw           xm3, xm1
    packsswb        xm3, xm3
    pextrb    [bufq+xq], xm3, 0
    pslldq          xm3, 2
    pand            xm3, xm15
    pandn           xm0, xm15, xm0
    por             xm0, xm3
    psrldq          xm0, 1
    inc              xq
    jz .x_loop_ar2_end
    test             xq, 3
    jnz .x_loop_ar2_inner
    jmp .x_loop_ar2

.x_loop_ar2_end:
    add            bufq, 82
    dec              hd
    jg .y_loop_ar2
    RET

.ar3:
    DEFINE_ARGS buf, fg_data, shift
%if WIN64
    SUB             rsp, 16*12
%assign stack_size_padded (stack_size_padded+16*12)
%assign stack_size (stack_size+16*12)
%else
    ALLOC_STACK   16*12
%endif
    mov          shiftd, [fg_dataq+FGData.ar_coeff_shift]
    vpbroadcastw   xm14, [base+round_vals-12+shiftq*2]
    movq           xm15, [base+byte_blend]
    pmovsxbw        xm0, [fg_dataq+FGData.ar_coeffs_y+ 0]   ; cf0-7
    pmovsxbw        xm1, [fg_dataq+FGData.ar_coeffs_y+ 8]   ; cf8-15
    pmovsxbw        xm2, [fg_dataq+FGData.ar_coeffs_y+16]   ; cf16-23
    pshufd          xm9, xm0, q1111
    pshufd         xm10, xm0, q2222
    pshufd         xm11, xm0, q3333
    pshufd          xm0, xm0, q0000
    pshufd          xm6, xm1, q1111
    pshufd          xm7, xm1, q2222
    pshufd          xm8, xm1, q3333
    pshufd          xm1, xm1, q0000
    pshufd          xm3, xm2, q1111
    psrldq         xm13, xm2, 10
    pinsrw          xm2, [pw_1], 5
    pshufd          xm4, xm2, q2222
    pshufd          xm2, xm2, q0000
    pinsrw         xm13, [base+round_vals+shiftq*2-10], 3
    mova    [rsp+ 0*16], xm0
    mova    [rsp+ 1*16], xm9
    mova    [rsp+ 2*16], xm10
    mova    [rsp+ 3*16], xm11
    mova    [rsp+ 4*16], xm1
    mova    [rsp+ 5*16], xm6
    mova    [rsp+ 6*16], xm7
    mova    [rsp+ 7*16], xm8
    mova    [rsp+ 8*16], xm2
    mova    [rsp+ 9*16], xm3
    mova    [rsp+10*16], xm4
    DEFINE_ARGS buf, fg_data, h, x
    sub            bufq, 82*73-(82*3+79)
    mov              hd, 70
.y_loop_ar3:
    mov              xq, -76

.x_loop_ar3:
    movu            xm0, [bufq+xq-82*3-3]   ; y=-3,x=[-3,+12]
    movu            xm1, [bufq+xq-82*2-3]   ; y=-2,x=[-3,+12]
    movu            xm2, [bufq+xq-82*1-3]   ; y=-1,x=[-3,+12]
    pxor            xm3, xm3
    pcmpgtb         xm6, xm3, xm2
    pcmpgtb         xm5, xm3, xm1
    pcmpgtb         xm4, xm3, xm0
    punpckhbw       xm3, xm0, xm4
    punpcklbw       xm0, xm4
    punpckhbw       xm4, xm1, xm5
    punpcklbw       xm1, xm5
    punpckhbw       xm5, xm2, xm6
    punpcklbw       xm2, xm6

    psrldq          xm6, xm0, 2
    psrldq          xm7, xm0, 4
    psrldq          xm8, xm0, 6
    psrldq          xm9, xm0, 8
    palignr        xm10, xm3, xm0, 10
    palignr        xm11, xm3, xm0, 12

    punpcklwd       xm0, xm6
    punpcklwd       xm7, xm8
    punpcklwd       xm9, xm10
    punpcklwd      xm11, xm1
    pmaddwd         xm0, [rsp+ 0*16]
    pmaddwd         xm7, [rsp+ 1*16]
    pmaddwd         xm9, [rsp+ 2*16]
    pmaddwd        xm11, [rsp+ 3*16]
    paddd           xm0, xm7
    paddd           xm9, xm11
    paddd           xm0, xm9

    psrldq          xm6, xm1, 2
    psrldq          xm7, xm1, 4
    psrldq          xm8, xm1, 6
    psrldq          xm9, xm1, 8
    palignr        xm10, xm4, xm1, 10
    palignr        xm11, xm4, xm1, 12
    psrldq         xm12, xm2, 2

    punpcklwd       xm6, xm7
    punpcklwd       xm8, xm9
    punpcklwd      xm10, xm11
    punpcklwd      xm12, xm2, xm12
    pmaddwd         xm6, [rsp+ 4*16]
    pmaddwd         xm8, [rsp+ 5*16]
    pmaddwd        xm10, [rsp+ 6*16]
    pmaddwd        xm12, [rsp+ 7*16]
    paddd           xm6, xm8
    paddd          xm10, xm12
    paddd           xm6, xm10
    paddd           xm0, xm6

    psrldq          xm6, xm2, 4
    psrldq          xm7, xm2, 6
    psrldq          xm8, xm2, 8
    palignr         xm9, xm5, xm2, 10
    palignr         xm5, xm5, xm2, 12

    punpcklwd       xm6, xm7
    punpcklwd       xm8, xm9
    punpcklwd       xm5, xm14
    pmaddwd         xm6, [rsp+ 8*16]
    pmaddwd         xm8, [rsp+ 9*16]
    pmaddwd         xm5, [rsp+10*16]
    paddd           xm0, xm6
    paddd           xm8, xm5
    paddd           xm0, xm8

    movq            xm1, [bufq+xq-3]        ; y=0,x=[-3,+4]
.x_loop_ar3_inner:
    pmovsxbw        xm2, xm1
    pmaddwd         xm2, xm13
    pshufd          xm3, xm2, q1111
    paddd           xm2, xm3                ; left+cur
    paddd           xm2, xm0                ; add top
    psrldq          xm0, 4
    psrad           xm2, [fg_dataq+FGData.ar_coeff_shift]
    ; don't packssdw since we only care about one value
    packsswb        xm2, xm2
    pextrb    [bufq+xq], xm2, 0
    pslldq          xm2, 3
    pand            xm2, xm15
    pandn           xm1, xm15, xm1
    por             xm1, xm2
    psrldq          xm1, 1
    inc              xq
    jz .x_loop_ar3_end
    test             xq, 3
    jnz .x_loop_ar3_inner
    jmp .x_loop_ar3

.x_loop_ar3_end:
    add            bufq, 82
    dec              hd
    jg .y_loop_ar3
    RET

%macro generate_grain_uv_fn 3 ; ss_name, ss_x, ss_y
INIT_XMM avx2
cglobal generate_grain_uv_%1, 4, 10, 16, buf, bufy, fg_data, uv
    lea              r4, [pb_mask]
%define base r4-pb_mask
    movq            xm1, [base+rnd_next_upperbit_mask]
    movq            xm4, [base+mul_bits]
    movq            xm7, [base+hmul_bits]
    mov             r5d, [fg_dataq+FGData.grain_scale_shift]
    vpbroadcastw    xm8, [base+round+r5*2]
    mova            xm5, [base+pb_mask]
    vpbroadcastw    xm0, [fg_dataq+FGData.seed]
    vpbroadcastw    xm9, [base+pw_seed_xor+uvq*4]
    pxor            xm0, xm9
    vpbroadcastd    xm9, [base+pd_m65536]
    lea              r6, [gaussian_sequence]
%if %2
    mov             r7d, 73-35*%3
    add            bufq, 44
.loop_y:
    mov              r5, -44
.loop_x:
%else
    mov              r5, -73*82
    sub            bufq, r5
.loop:
%endif
    pand            xm2, xm0, xm1
    psrlw           xm3, xm2, 10
    por             xm2, xm3            ; bits 0xf, 0x1e, 0x3c and 0x78 are set
    pmullw          xm2, xm4            ; bits 0x0f00 are set
    pshufb          xm2, xm5, xm2       ; set 15th bit for next 4 seeds
    psllq           xm6, xm2, 30
    por             xm2, xm6
    psllq           xm6, xm2, 15
    por             xm2, xm6            ; aggregate each bit into next seed's high bit
    pmulhuw         xm3, xm0, xm7
    por             xm2, xm3            ; 4 next output seeds
    pshuflw         xm0, xm2, q3333
    psrlw           xm2, 5
    pmovzxwd        xm3, xm2
    mova            xm6, xm9
    vpgatherdd      xm2, [r6+xm3*2], xm6
    pandn           xm2, xm9, xm2
    packusdw        xm2, xm2
    pmulhrsw        xm2, xm8
    packsswb        xm2, xm2
    movd      [bufq+r5], xm2
    add              r5, 4
%if %2
    jl .loop_x
    add            bufq, 82
    dec             r7d
    jg .loop_y
%else
    jl .loop
%endif

    ; auto-regression code
    movsxd           r5, [fg_dataq+FGData.ar_coeff_lag]
    movsxd           r5, [base+generate_grain_uv_%1_avx2_table+r5*4]
    lea              r5, [r5+base+generate_grain_uv_%1_avx2_table]
    jmp              r5

.ar0:
    INIT_YMM avx2
    DEFINE_ARGS buf, bufy, fg_data, uv, unused, shift
    imul            uvd, 28
    mov          shiftd, [fg_dataq+FGData.ar_coeff_shift]
    movd            xm4, [fg_dataq+FGData.ar_coeffs_uv+uvq]
    movd            xm3, [base+hmul_bits+shiftq*2]
    DEFINE_ARGS buf, bufy, h
    pmovsxbw        xm4, xm4
%if %2
    vpbroadcastd     m7, [pb_1]
    vpbroadcastw     m6, [hmul_bits+2+%3*2]
%endif
    vpbroadcastw     m4, xm4
    vpbroadcastw     m3, xm3
    pxor            m12, m12
%if %2
    sub            bufq, 82*(73-35*%3)+82-(82*3+41)
%else
    sub            bufq, 82*70-3
%endif
    add           bufyq, 3+82*3
    mov              hd, 70-35*%3
.y_loop_ar0:
%if %2
    ; first 32 pixels
    movu            xm8, [bufyq]
%if %3
    movu            xm9, [bufyq+82]
%endif
    movu           xm10, [bufyq+16]
%if %3
    movu           xm11, [bufyq+82+16]
%endif
    vinserti128      m8, [bufyq+32], 1
%if %3
    vinserti128      m9, [bufyq+82+32], 1
%endif
    vinserti128     m10, [bufyq+48], 1
%if %3
    vinserti128     m11, [bufyq+82+48], 1
%endif
    pmaddubsw        m8, m7, m8
%if %3
    pmaddubsw        m9, m7, m9
%endif
    pmaddubsw       m10, m7, m10
%if %3
    pmaddubsw       m11, m7, m11
    paddw            m8, m9
    paddw           m10, m11
%endif
    pmulhrsw         m8, m6
    pmulhrsw        m10, m6
%else
    xor             r3d, r3d
    ; first 32x2 pixels
.x_loop_ar0:
    movu             m8, [bufyq+r3]
    pcmpgtb          m9, m12, m8
    punpckhbw       m10, m8, m9
    punpcklbw        m8, m9
%endif
    pmullw           m8, m4
    pmullw          m10, m4
    pmulhrsw         m8, m3
    pmulhrsw        m10, m3
%if %2
    movu             m0, [bufq]
%else
    movu             m0, [bufq+r3]
%endif
    pcmpgtb          m1, m12, m0
    punpckhbw        m9, m0, m1
    punpcklbw        m0, m1
    paddw            m0, m8
    paddw            m9, m10
    packsswb         m0, m9
%if %2
    movu         [bufq], m0
%else
    movu      [bufq+r3], m0
    add             r3d, 32
    cmp             r3d, 64
    jl .x_loop_ar0
%endif

    ; last 6/12 pixels
    movu            xm8, [bufyq+32*2]
%if %2
%if %3
    movu            xm9, [bufyq+32*2+82]
%endif
    pmaddubsw       xm8, xm7, xm8
%if %3
    pmaddubsw       xm9, xm7, xm9
    paddw           xm8, xm9
%endif
    pmulhrsw        xm8, xm6
    pmullw          xm8, xm4
    pmulhrsw        xm8, xm3
    movq            xm0, [bufq+32]
    pcmpgtb         xm9, xm12, xm0
    punpcklbw       xm9, xm0, xm9
    paddw           xm8, xm9
    packsswb        xm8, xm8
    vpblendw        xm0, xm8, xm0, 1000b
    movq      [bufq+32], xm0
%else
    pcmpgtb         xm9, xm12, xm8
    punpckhbw      xm10, xm8, xm9
    punpcklbw       xm8, xm9
    pmullw         xm10, xm4
    pmullw          xm8, xm4
    pmulhrsw       xm10, xm3
    pmulhrsw        xm8, xm3
    movu            xm0, [bufq+64]
    pcmpgtb         xm9, xm12, xm0
    punpcklbw       xm1, xm0, xm9
    punpckhbw       xm9, xm0, xm9
    paddw           xm1, xm8
    paddw           xm9, xm10
    packsswb        xm1, xm9
    vpblendw        xm0, xm1, xm0, 11000000b
    movu      [bufq+64], xm0
%endif

    add            bufq, 82
    add           bufyq, 82<<%3
    dec              hd
    jg .y_loop_ar0
    RET

.ar1:
    INIT_XMM avx2
    DEFINE_ARGS buf, bufy, fg_data, uv, val3, cf3, min, max, x, shift
    imul            uvd, 28
    mov          shiftd, [fg_dataq+FGData.ar_coeff_shift]
    movsx          cf3d, byte [fg_dataq+FGData.ar_coeffs_uv+uvq+3]
    movd            xm4, [fg_dataq+FGData.ar_coeffs_uv+uvq]
    pinsrb          xm4, [fg_dataq+FGData.ar_coeffs_uv+uvq+4], 3
    DEFINE_ARGS buf, bufy, h, val0, val3, cf3, min, max, x, shift
    pmovsxbw        xm4, xm4
    pshufd          xm5, xm4, q1111
    pshufd          xm4, xm4, q0000
    pmovsxwd        xm3, [base+round_vals+shiftq*2-12]    ; rnd
%if %2
    vpbroadcastd    xm7, [pb_1]
    vpbroadcastw    xm6, [hmul_bits+2+%3*2]
%endif
    vpbroadcastd    xm3, xm3
%if %2
    sub            bufq, 82*(73-35*%3)+44-(82*3+41)
%else
    sub            bufq, 82*70-(82-3)
%endif
    add           bufyq, 79+82*3
    mov              hd, 70-35*%3
    mov            mind, -128
    mov            maxd, 127
.y_loop_ar1:
    mov              xq, -(76>>%2)
    movsx         val3d, byte [bufq+xq-1]
.x_loop_ar1:
    pmovsxbw        xm0, [bufq+xq-82-1]     ; top/left
%if %2
    movq            xm8, [bufyq+xq*2]
%if %3
    movq            xm9, [bufyq+xq*2+82]
%endif
%endif
    psrldq          xm2, xm0, 2             ; top
    psrldq          xm1, xm0, 4             ; top/right
%if %2
    pmaddubsw       xm8, xm7, xm8
%if %3
    pmaddubsw       xm9, xm7, xm9
    paddw           xm8, xm9
%endif
    pmulhrsw        xm8, xm6
%else
    pmovsxbw        xm8, [bufyq+xq]
%endif
    punpcklwd       xm0, xm2
    punpcklwd       xm1, xm8
    pmaddwd         xm0, xm4
    pmaddwd         xm1, xm5
    paddd           xm0, xm1
    paddd           xm0, xm3
.x_loop_ar1_inner:
    movd          val0d, xm0
    psrldq          xm0, 4
    imul          val3d, cf3d
    add           val3d, val0d
    sarx          val3d, val3d, shiftd
    movsx         val0d, byte [bufq+xq]
    add           val3d, val0d
    cmp           val3d, maxd
    cmovns        val3d, maxd
    cmp           val3d, mind
    cmovs         val3d, mind
    mov  byte [bufq+xq], val3b
    ; keep val3d in-place as left for next x iteration
    inc              xq
    jz .x_loop_ar1_end
    test             xq, 3
    jnz .x_loop_ar1_inner
    jmp .x_loop_ar1

.x_loop_ar1_end:
    add            bufq, 82
    add           bufyq, 82<<%3
    dec              hd
    jg .y_loop_ar1
    RET

.ar2:
    DEFINE_ARGS buf, bufy, fg_data, uv, unused, shift
    mov          shiftd, [fg_dataq+FGData.ar_coeff_shift]
    imul            uvd, 28
    vpbroadcastw   xm15, [base+round_vals-12+shiftq*2]
    pmovsxbw        xm8, [fg_dataq+FGData.ar_coeffs_uv+uvq+0]   ; cf0-7
    pmovsxbw        xm9, [fg_dataq+FGData.ar_coeffs_uv+uvq+8]   ; cf8-12
    pinsrw          xm9, [base+pw_1], 5
%if %2
    vpbroadcastw    xm7, [base+hmul_bits+2+%3*2]
    vpbroadcastd    xm6, [base+pb_1]
%endif
    DEFINE_ARGS buf, bufy, fg_data, h, unused, x
    pshufd         xm12, xm9, q0000
    pshufd         xm13, xm9, q1111
    pshufd         xm14, xm9, q2222
    pshufd         xm11, xm8, q3333
    pshufd         xm10, xm8, q2222
    pshufd          xm9, xm8, q1111
    pshufd          xm8, xm8, q0000
%if %2
    sub            bufq, 82*(73-35*%3)+44-(82*3+41)
%else
    sub            bufq, 82*70-(82-3)
%endif
    add           bufyq, 79+82*3
    mov              hd, 70-35*%3
.y_loop_ar2:
    mov              xq, -(76>>%2)

.x_loop_ar2:
    pmovsxbw        xm0, [bufq+xq-82*2-2]   ; y=-2,x=[-2,+5]
    pmovsxbw        xm1, [bufq+xq-82*1-2]   ; y=-1,x=[-2,+5]
    psrldq          xm2, xm0, 2             ; y=-2,x=[-1,+5]
    psrldq          xm3, xm1, 2             ; y=-1,x=[-1,+5]
    psrldq          xm4, xm1, 4             ; y=-1,x=[+0,+5]
    punpcklwd       xm2, xm0, xm2
    punpcklwd       xm3, xm4
    pmaddwd         xm2, xm8
    pmaddwd         xm3, xm11
    paddd           xm2, xm3

    psrldq          xm4, xm0, 4             ; y=-2,x=[+0,+5]
    psrldq          xm5, xm0, 6             ; y=-2,x=[+1,+5]
    psrldq          xm0, 8                  ; y=-2,x=[+2,+5]
    punpcklwd       xm4, xm5
    punpcklwd       xm0, xm1
    psrldq          xm3, xm1, 6             ; y=-1,x=[+1,+5]
    psrldq          xm1, xm1, 8             ; y=-1,x=[+2,+5]
    punpcklwd       xm3, xm1
    pmaddwd         xm4, xm9
    pmaddwd         xm0, xm10
    pmaddwd         xm3, xm12
    paddd           xm4, xm0
    paddd           xm2, xm3
    paddd           xm2, xm4

%if %2
    movq            xm0, [bufyq+xq*2]
%if %3
    movq            xm3, [bufyq+xq*2+82]
%endif
    pmaddubsw       xm0, xm6, xm0
%if %3
    pmaddubsw       xm3, xm6, xm3
    paddw           xm0, xm3
%endif
    pmulhrsw        xm0, xm7
%else
    pmovsxbw        xm0, [bufyq+xq]
%endif
    punpcklwd       xm0, xm15
    pmaddwd         xm0, xm14
    paddd           xm2, xm0

    movq            xm0, [bufq+xq-2]        ; y=0,x=[-2,+5]
.x_loop_ar2_inner:
    pmovsxbw        xm0, xm0
    pmaddwd         xm3, xm0, xm13
    paddd           xm3, xm2
    psrldq          xm2, 4                  ; shift top to next pixel
    psrad           xm3, [fg_dataq+FGData.ar_coeff_shift]
    pslldq          xm3, 2
    psrldq          xm0, 2
    paddw           xm3, xm0
    vpblendw        xm0, xm3, 00000010b
    packsswb        xm0, xm0
    pextrb    [bufq+xq], xm0, 1
    inc              xq
    jz .x_loop_ar2_end
    test             xq, 3
    jnz .x_loop_ar2_inner
    jmp .x_loop_ar2

.x_loop_ar2_end:
    add            bufq, 82
    add           bufyq, 82<<%3
    dec              hd
    jg .y_loop_ar2
    RET

.ar3:
    DEFINE_ARGS buf, bufy, fg_data, uv, unused, shift
    SUB             rsp, 16*12
%assign stack_size_padded (stack_size_padded+16*12)
%assign stack_size (stack_size+16*12)
    mov          shiftd, [fg_dataq+FGData.ar_coeff_shift]
    imul            uvd, 28
    vpbroadcastw   xm14, [base+round_vals-12+shiftq*2]
    pmovsxbw        xm0, [fg_dataq+FGData.ar_coeffs_uv+uvq+ 0]   ; cf0-7
    pmovsxbw        xm1, [fg_dataq+FGData.ar_coeffs_uv+uvq+ 8]   ; cf8-15
    pmovsxbw        xm2, [fg_dataq+FGData.ar_coeffs_uv+uvq+16]   ; cf16-23
    pmovsxbw        xm5, [fg_dataq+FGData.ar_coeffs_uv+uvq+24]   ; cf24 [luma]
    pshufd          xm9, xm0, q1111
    pshufd         xm10, xm0, q2222
    pshufd         xm11, xm0, q3333
    pshufd          xm0, xm0, q0000
    pshufd          xm6, xm1, q1111
    pshufd          xm7, xm1, q2222
    pshufd          xm8, xm1, q3333
    pshufd          xm1, xm1, q0000
    pshufd          xm3, xm2, q1111
    pshufd          xm4, xm2, q2222
    vpbroadcastw    xm5, xm5
    vpblendw        xm4, xm5, 10101010b                     ; interleave luma cf
    psrldq          xm5, xm2, 10
    pshufd          xm2, xm2, q0000
    pinsrw          xm5, [base+round_vals+shiftq*2-10], 3
    pmovzxwd       xm14, xm14
    mova    [rsp+ 0*16], xm0
    mova    [rsp+ 1*16], xm9
    mova    [rsp+ 2*16], xm10
    mova    [rsp+ 3*16], xm11
    mova    [rsp+ 4*16], xm1
    mova    [rsp+ 5*16], xm6
    mova    [rsp+ 6*16], xm7
    mova    [rsp+ 7*16], xm8
    mova    [rsp+ 8*16], xm2
    mova    [rsp+ 9*16], xm3
    mova    [rsp+10*16], xm4
    mova    [rsp+11*16], xm5
%if %2
    vpbroadcastd   xm13, [base+pb_1]
    vpbroadcastw   xm15, [base+hmul_bits+2+%3*2]
%endif
    DEFINE_ARGS buf, bufy, fg_data, h, unused, x
%if %2
    sub            bufq, 82*(73-35*%3)+44-(82*3+41)
%else
    sub            bufq, 82*70-(82-3)
%endif
    add           bufyq, 79+82*3
    mov              hd, 70-35*%3
.y_loop_ar3:
    mov              xq, -(76>>%2)

.x_loop_ar3:
    movu            xm0, [bufq+xq-82*3-3]   ; y=-3,x=[-3,+12]
    movu            xm1, [bufq+xq-82*2-3]   ; y=-2,x=[-3,+12]
    movu            xm2, [bufq+xq-82*1-3]   ; y=-1,x=[-3,+12]
    pxor            xm3, xm3
    pcmpgtb         xm6, xm3, xm2
    pcmpgtb         xm5, xm3, xm1
    pcmpgtb         xm4, xm3, xm0
    punpckhbw       xm3, xm0, xm4
    punpcklbw       xm0, xm4
    punpckhbw       xm4, xm1, xm5
    punpcklbw       xm1, xm5
    punpckhbw       xm5, xm2, xm6
    punpcklbw       xm2, xm6

    psrldq          xm6, xm0, 2
    psrldq          xm7, xm0, 4
    psrldq          xm8, xm0, 6
    psrldq          xm9, xm0, 8
    palignr        xm10, xm3, xm0, 10
    palignr        xm11, xm3, xm0, 12

    punpcklwd       xm0, xm6
    punpcklwd       xm7, xm8
    punpcklwd       xm9, xm10
    punpcklwd      xm11, xm1
    pmaddwd         xm0, [rsp+ 0*16]
    pmaddwd         xm7, [rsp+ 1*16]
    pmaddwd         xm9, [rsp+ 2*16]
    pmaddwd        xm11, [rsp+ 3*16]
    paddd           xm0, xm7
    paddd           xm9, xm11
    paddd           xm0, xm9

    psrldq          xm6, xm1, 2
    psrldq          xm7, xm1, 4
    psrldq          xm8, xm1, 6
    psrldq          xm9, xm1, 8
    palignr        xm10, xm4, xm1, 10
    palignr        xm11, xm4, xm1, 12
    psrldq         xm12, xm2, 2

    punpcklwd       xm6, xm7
    punpcklwd       xm8, xm9
    punpcklwd      xm10, xm11
    punpcklwd      xm12, xm2, xm12
    pmaddwd         xm6, [rsp+ 4*16]
    pmaddwd         xm8, [rsp+ 5*16]
    pmaddwd        xm10, [rsp+ 6*16]
    pmaddwd        xm12, [rsp+ 7*16]
    paddd           xm6, xm8
    paddd          xm10, xm12
    paddd           xm6, xm10
    paddd           xm0, xm6

    psrldq          xm6, xm2, 4
    psrldq          xm7, xm2, 6
    psrldq          xm8, xm2, 8
    palignr         xm9, xm5, xm2, 10
    palignr         xm5, xm5, xm2, 12

%if %2
    movq            xm1, [bufyq+xq*2]
%if %3
    movq            xm2, [bufyq+xq*2+82]
%endif
    pmaddubsw       xm1, xm13, xm1
%if %3
    pmaddubsw       xm2, xm13, xm2
    paddw           xm1, xm2
%endif
    pmulhrsw        xm1, xm15
%else
    pmovsxbw        xm1, [bufyq+xq]
%endif

    punpcklwd       xm6, xm7
    punpcklwd       xm8, xm9
    punpcklwd       xm5, xm1
    pmaddwd         xm6, [rsp+ 8*16]
    pmaddwd         xm8, [rsp+ 9*16]
    pmaddwd         xm5, [rsp+10*16]
    paddd           xm0, xm6
    paddd           xm8, xm5
    paddd           xm0, xm8
    paddd           xm0, xm14

    movq            xm1, [bufq+xq-3]        ; y=0,x=[-3,+4]
.x_loop_ar3_inner:
    pmovsxbw        xm1, xm1
    pmaddwd         xm2, xm1, [rsp+16*11]
    pshufd          xm3, xm2, q1111
    paddd           xm2, xm3                ; left+cur
    paddd           xm2, xm0                ; add top
    psrldq          xm0, 4
    psrad           xm2, [fg_dataq+FGData.ar_coeff_shift]
    ; don't packssdw, we only care about one value
    pslldq          xm2, 6
    vpblendw        xm1, xm2, 1000b
    packsswb        xm1, xm1
    pextrb    [bufq+xq], xm1, 3
    psrldq          xm1, 1
    inc              xq
    jz .x_loop_ar3_end
    test             xq, 3
    jnz .x_loop_ar3_inner
    jmp .x_loop_ar3

.x_loop_ar3_end:
    add            bufq, 82
    add           bufyq, 82<<%3
    dec              hd
    jg .y_loop_ar3
    RET
%endmacro

generate_grain_uv_fn 420, 1, 1
generate_grain_uv_fn 422, 1, 0
generate_grain_uv_fn 444, 0, 0

INIT_YMM avx2
cglobal fgy_32x32xn, 6, 13, 16, dst, src, stride, fg_data, w, scaling, grain_lut
    pcmpeqw         m10, m10
    psrld           m10, 24
    mov             r7d, [fg_dataq+FGData.scaling_shift]
    lea              r8, [pb_mask]
%define base r8-pb_mask
    vpbroadcastw    m11, [base+mul_bits+r7*2-14]
    mov             r7d, [fg_dataq+FGData.clip_to_restricted_range]
    vpbroadcastw    m12, [base+max+r7*4]
    vpbroadcastw    m13, [base+min+r7*2]

    DEFINE_ARGS dst, src, stride, fg_data, w, scaling, grain_lut, unused, sby, see, overlap

    mov        overlapd, [fg_dataq+FGData.overlap_flag]
    movifnidn      sbyd, sbym
    test           sbyd, sbyd
    setnz           r7b
    test            r7b, overlapb
    jnz .vertical_overlap

    imul           seed, sbyd, (173 << 24) | 37
    add            seed, (105 << 24) | 178
    rol            seed, 8
    movzx          seed, seew
    xor            seed, [fg_dataq+FGData.seed]

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                unused1, unused2, see, overlap

    lea        src_bakq, [srcq+wq]
    neg              wq
    sub            dstq, srcq

.loop_x:
    mov             r6d, seed
    or             seed, 0xEFF4
    shr             r6d, 1
    test           seeb, seeh
    lea            seed, [r6+0x8000]
    cmovp          seed, r6d                ; updated seed

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                offx, offy, see, overlap

    mov           offxd, seed
    rorx          offyd, seed, 8
    shr           offxd, 12
    and           offyd, 0xf
    imul          offyd, 164
    lea           offyq, [offyq+offxq*2+747] ; offy*stride+offx

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                h, offxy, see, overlap

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
.loop_y:
    ; src
    mova             m0, [srcq]
    pxor             m2, m2
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word
    punpckhwd        m5, m0, m2
    punpcklwd        m4, m0, m2
    punpckhwd        m7, m1, m2
    punpcklwd        m6, m1, m2             ; m4-7: src as dword

    ; scaling[src]
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m8, [scalingq+m4], m3
    vpgatherdd       m4, [scalingq+m5], m9
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m5, [scalingq+m6], m3
    vpgatherdd       m6, [scalingq+m7], m9
    pand             m8, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m8, m4
    packusdw         m5, m6

    ; grain = grain_lut[offy+y][offx+x]
    movu             m3, [grain_lutq+offxyq]
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[src] * grain, scaling_shift)
    pmullw           m2, m8
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
    mova    [dstq+srcq], m0

    add            srcq, strideq
    add      grain_lutq, 82
    dec              hd
    jg .loop_y

    add              wq, 32
    jge .end
    lea            srcq, [src_bakq+wq]
    test       overlapd, overlapd
    jz .loop_x

    ; r8m = sbym
    movd           xm15, [pb_27_17_17_27]
    cmp       dword r8m, 0
    jne .loop_x_hv_overlap

    ; horizontal overlap (without vertical overlap)
    movd           xm14, [pw_1024]
.loop_x_h_overlap:
    mov             r6d, seed
    or             seed, 0xEFF4
    shr             r6d, 1
    test           seeb, seeh
    lea            seed, [r6+0x8000]
    cmovp          seed, r6d                ; updated seed

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                offx, offy, see, left_offxy

    lea     left_offxyd, [offyd+32]         ; previous column's offy*stride+offx
    mov           offxd, seed
    rorx          offyd, seed, 8
    shr           offxd, 12
    and           offyd, 0xf
    imul          offyd, 164
    lea           offyq, [offyq+offxq*2+747] ; offy*stride+offx

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                h, offxy, see, left_offxy

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
.loop_y_h_overlap:
    ; src
    mova             m0, [srcq]
    pxor             m2, m2
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word
    punpckhwd        m5, m0, m2
    punpcklwd        m4, m0, m2
    punpckhwd        m7, m1, m2
    punpcklwd        m6, m1, m2             ; m4-7: src as dword

    ; scaling[src]
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m8, [scalingq+m4], m3
    vpgatherdd       m4, [scalingq+m5], m9
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m5, [scalingq+m6], m3
    vpgatherdd       m6, [scalingq+m7], m9
    pand             m8, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m8, m4
    packusdw         m5, m6

    ; grain = grain_lut[offy+y][offx+x]
    movu             m3, [grain_lutq+offxyq]
    movd            xm4, [grain_lutq+left_offxyq]
    punpcklbw       xm4, xm3
    pmaddubsw       xm4, xm15, xm4
    pmulhrsw        xm4, xm14
    packsswb        xm4, xm4
    vpblendw        xm4, xm3, 11111110b
    vpblendd         m3, m4, 00001111b
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[src] * grain, scaling_shift)
    pmullw           m2, m8
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
    mova    [dstq+srcq], m0

    add            srcq, strideq
    add      grain_lutq, 82
    dec              hd
    jg .loop_y_h_overlap

    add              wq, 32
    jge .end
    lea            srcq, [src_bakq+wq]

    ; r8m = sbym
    cmp       dword r8m, 0
    jne .loop_x_hv_overlap
    jmp .loop_x_h_overlap

.end:
    RET

.vertical_overlap:
    DEFINE_ARGS dst, src, stride, fg_data, w, scaling, grain_lut, unused, sby, see, overlap

    movzx          sbyd, sbyb
    imul           seed, [fg_dataq+FGData.seed], 0x00010001
    imul            r7d, sbyd, 173 * 0x00010001
    imul           sbyd, 37 * 0x01000100
    add             r7d, (105 << 16) | 188
    add            sbyd, (178 << 24) | (141 << 8)
    and             r7d, 0x00ff00ff
    and            sbyd, 0xff00ff00
    xor            seed, r7d
    xor            seed, sbyd               ; (cur_seed << 16) | top_seed

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                unused1, unused2, see, overlap

    lea        src_bakq, [srcq+wq]
    neg              wq
    sub            dstq, srcq

    vpbroadcastd    m14, [pw_1024]
.loop_x_v_overlap:
    vpbroadcastw    m15, [pb_27_17_17_27]

    ; we assume from the block above that bits 8-15 of r7d are zero'ed
    mov             r6d, seed
    or             seed, 0xeff4eff4
    test           seeb, seeh
    setp            r7b                     ; parity of top_seed
    shr            seed, 16
    shl             r7d, 16
    test           seeb, seeh
    setp            r7b                     ; parity of cur_seed
    or              r6d, 0x00010001
    xor             r7d, r6d
    rorx           seed, r7d, 1             ; updated (cur_seed << 16) | top_seed

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                offx, offy, see, overlap, top_offxy

    rorx          offyd, seed, 8
    rorx          offxd, seed, 12
    and           offyd, 0xf000f
    and           offxd, 0xf000f
    imul          offyd, 164
    ; offxy=offy*stride+offx, (cur_offxy << 16) | top_offxy
    lea           offyq, [offyq+offxq*2+0x10001*747+32*82]

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                h, offxy, see, overlap, top_offxy

    movzx    top_offxyd, offxyw
    shr          offxyd, 16

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
.loop_y_v_overlap:
    ; src
    mova             m0, [srcq]
    pxor             m2, m2
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word
    punpckhwd        m5, m0, m2
    punpcklwd        m4, m0, m2
    punpckhwd        m7, m1, m2
    punpcklwd        m6, m1, m2             ; m4-7: src as dword

    ; scaling[src]
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m8, [scalingq+m4], m3
    vpgatherdd       m4, [scalingq+m5], m9
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m5, [scalingq+m6], m3
    vpgatherdd       m6, [scalingq+m7], m9
    pand             m8, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m8, m4
    packusdw         m5, m6

    ; grain = grain_lut[offy+y][offx+x]
    movu             m3, [grain_lutq+offxyq]
    movu             m4, [grain_lutq+top_offxyq]
    punpckhbw        m6, m4, m3
    punpcklbw        m4, m3
    pmaddubsw        m6, m15, m6
    pmaddubsw        m4, m15, m4
    pmulhrsw         m6, m14
    pmulhrsw         m4, m14
    packsswb         m3, m4, m6
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[src] * grain, scaling_shift)
    pmullw           m2, m8
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
    mova    [dstq+srcq], m0

    vpbroadcastw    m15, [pb_27_17_17_27+2] ; swap weights for second v-overlap line
    add            srcq, strideq
    add      grain_lutq, 82
    dec              hw
    jz .end_y_v_overlap
    ; 2 lines get vertical overlap, then fall back to non-overlap code for
    ; remaining (up to) 30 lines
    btc              hd, 16
    jnc .loop_y_v_overlap
    jmp .loop_y

.end_y_v_overlap:
    add              wq, 32
    jge .end_hv
    lea            srcq, [src_bakq+wq]

    ; since fg_dataq.overlap is guaranteed to be set, we never jump
    ; back to .loop_x_v_overlap, and instead always fall-through to
    ; h+v overlap

    movd           xm15, [pb_27_17_17_27]
.loop_x_hv_overlap:
    vpbroadcastw     m8, [pb_27_17_17_27]

    ; we assume from the block above that bits 8-15 of r7d are zero'ed
    mov             r6d, seed
    or             seed, 0xeff4eff4
    test           seeb, seeh
    setp            r7b                     ; parity of top_seed
    shr            seed, 16
    shl             r7d, 16
    test           seeb, seeh
    setp            r7b                     ; parity of cur_seed
    or              r6d, 0x00010001
    xor             r7d, r6d
    rorx           seed, r7d, 1             ; updated (cur_seed << 16) | top_seed

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                offx, offy, see, left_offxy, top_offxy, topleft_offxy

    lea  topleft_offxyq, [top_offxyq+32]
    lea     left_offxyq, [offyq+32]
    rorx          offyd, seed, 8
    rorx          offxd, seed, 12
    and           offyd, 0xf000f
    and           offxd, 0xf000f
    imul          offyd, 164
    ; offxy=offy*stride+offx, (cur_offxy << 16) | top_offxy
    lea           offyq, [offyq+offxq*2+0x10001*747+32*82]

    DEFINE_ARGS dst, src, stride, src_bak, w, scaling, grain_lut, \
                h, offxy, see, left_offxy, top_offxy, topleft_offxy

    movzx    top_offxyd, offxyw
    shr          offxyd, 16

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
.loop_y_hv_overlap:
    ; src
    mova             m0, [srcq]
    pxor             m2, m2
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word
    punpckhwd        m5, m0, m2
    punpcklwd        m4, m0, m2
    punpckhwd        m7, m1, m2
    punpcklwd        m6, m1, m2             ; m4-7: src as dword

    ; scaling[src]
    pcmpeqw          m3, m3
    ; FIXME it would be nice to have another register here to do 2 vpgatherdd's in parallel
    vpgatherdd       m9, [scalingq+m4], m3
    pcmpeqw          m3, m3
    vpgatherdd       m4, [scalingq+m5], m3
    pcmpeqw          m3, m3
    vpgatherdd       m5, [scalingq+m6], m3
    pcmpeqw          m3, m3
    vpgatherdd       m6, [scalingq+m7], m3
    pand             m9, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m9, m4
    packusdw         m5, m6

    ; grain = grain_lut[offy+y][offx+x]
    movu             m3, [grain_lutq+offxyq]
    movu             m6, [grain_lutq+top_offxyq]
    movd            xm4, [grain_lutq+left_offxyq]
    movd            xm7, [grain_lutq+topleft_offxyq]
    ; do h interpolation first (so top | top/left -> top, left | cur -> cur)
    punpcklbw       xm4, xm3
    punpcklbw       xm7, xm6
    pmaddubsw       xm4, xm15, xm4
    pmaddubsw       xm7, xm15, xm7
    pmulhrsw        xm4, xm14
    pmulhrsw        xm7, xm14
    packsswb        xm4, xm4
    packsswb        xm7, xm7
    vpblendw        xm4, xm3, 11111110b
    vpblendw        xm7, xm6, 11111110b
    vpblendd         m3, m4, 00001111b
    vpblendd         m6, m7, 00001111b
    ; followed by v interpolation (top | cur -> cur)
    punpckhbw        m7, m6, m3
    punpcklbw        m6, m3
    pmaddubsw        m7, m8, m7
    pmaddubsw        m6, m8, m6
    pmulhrsw         m7, m14
    pmulhrsw         m6, m14
    packsswb         m3, m6, m7
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[src] * grain, scaling_shift)
    pmullw           m2, m9
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
    mova    [dstq+srcq], m0

    vpbroadcastw     m8, [pb_27_17_17_27+2] ; swap weights for second v-overlap line
    add            srcq, strideq
    add      grain_lutq, 82
    dec              hw
    jz .end_y_hv_overlap
    ; 2 lines get vertical overlap, then fall back to non-overlap code for
    ; remaining (up to) 30 lines
    btc              hd, 16
    jnc .loop_y_hv_overlap
    jmp .loop_y_h_overlap

.end_y_hv_overlap:
    add              wq, 32
    lea            srcq, [src_bakq+wq]
    jl .loop_x_hv_overlap

.end_hv:
    RET

%macro FGUV_FN 3 ; name, ss_hor, ss_ver
cglobal fguv_32x32xn_i%1, 6, 15, 16, dst, src, stride, fg_data, w, scaling, \
                                     grain_lut, h, sby, luma, lstride, uv_pl, is_id
    pcmpeqw         m10, m10
    psrld           m10, 24
    mov             r7d, [fg_dataq+FGData.scaling_shift]
    lea              r8, [pb_mask]
%define base r8-pb_mask
    vpbroadcastw    m11, [base+mul_bits+r7*2-14]
    mov             r7d, [fg_dataq+FGData.clip_to_restricted_range]
    mov             r9d, dword is_idm
    vpbroadcastw    m13, [base+min+r7*2]
    shlx            r7d, r7d, r9d
    vpbroadcastw    m12, [base+max+r7*2]

    cmp byte [fg_dataq+FGData.chroma_scaling_from_luma], 0
    jne .csfl

%macro %%FGUV_32x32xN_LOOP 3 ; not-csfl, ss_hor, ss_ver
    DEFINE_ARGS dst, src, stride, fg_data, w, scaling, grain_lut, unused, sby, see, overlap

%if %1
    mov             r7d, dword r11m
    vpbroadcastb     m0, [fg_dataq+FGData.uv_mult+r7*4]
    vpbroadcastb     m1, [fg_dataq+FGData.uv_luma_mult+r7*4]
    punpcklbw       m14, m1, m0
    vpbroadcastw    m15, [fg_dataq+FGData.uv_offset+r7*4]
%else
    vpbroadcastd    m14, [pw_1024]
%if %2
    vpbroadcastd    m15, [pb_23_22]
%else
    vpbroadcastd   xm15, [pb_27_17_17_27]
%endif
%endif

    mov        overlapd, [fg_dataq+FGData.overlap_flag]
    movifnidn      sbyd, sbym
    test           sbyd, sbyd
    setnz           r7b
    test            r7b, overlapb
    jnz %%vertical_overlap

    imul           seed, sbyd, (173 << 24) | 37
    add            seed, (105 << 24) | 178
    rol            seed, 8
    movzx          seed, seew
    xor            seed, [fg_dataq+FGData.seed]

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                unused2, unused3, see, overlap, unused4, unused5, lstride

    mov           lumaq, r9mp
    lea             r12, [srcq+wq]
    lea             r13, [dstq+wq]
    lea             r14, [lumaq+wq*(1+%2)]
    mov           r11mp, r12
    mov           r12mp, r13
    mov        lstrideq, r10mp
    neg              wq

%%loop_x:
    mov             r6d, seed
    or             seed, 0xEFF4
    shr             r6d, 1
    test           seeb, seeh
    lea            seed, [r6+0x8000]
    cmovp          seed, r6d               ; updated seed

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                offx, offy, see, overlap, unused1, unused2, lstride

    mov           offxd, seed
    rorx          offyd, seed, 8
    shr           offxd, 12
    and           offyd, 0xf
    imul          offyd, 164>>%3
    lea           offyq, [offyq+offxq*(2-%2)+(3+(6>>%3))*82+3+(6>>%2)]  ; offy*stride+offx

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                h, offxy, see, overlap, unused1, unused2, lstride

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
%%loop_y:
    ; src
%if %2
    mova            xm4, [lumaq+lstrideq*0+ 0]
    mova            xm6, [lumaq+lstrideq*0+16]
    mova            xm0, [srcq]
    vpbroadcastd     m7, [pb_1]
    vinserti128      m4, [lumaq+lstrideq*(1+%3) +0], 1
    vinserti128      m6, [lumaq+lstrideq*(1+%3)+16], 1
    vinserti128      m0, [srcq+strideq], 1
    pxor             m2, m2
    pmaddubsw        m4, m7
    pmaddubsw        m6, m7
    pavgw            m4, m2
    pavgw            m6, m2
%else
    pxor             m2, m2
    mova             m4, [lumaq]
    mova             m0, [srcq]
%endif

%if %1
%if %2
    packuswb         m4, m6                 ; luma
%endif
    punpckhbw        m6, m4, m0
    punpcklbw        m4, m0                 ; { luma, chroma }
    pmaddubsw        m6, m14
    pmaddubsw        m4, m14
    psraw            m6, 6
    psraw            m4, 6
    paddw            m6, m15
    paddw            m4, m15
    packuswb         m4, m6                 ; pack+unpack = clip
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%elif %2 == 0
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%endif

    punpckhwd        m5, m4, m2
    punpcklwd        m4, m2
    punpckhwd        m7, m6, m2
    punpcklwd        m6, m2                 ; m4-7: luma_src as dword

    ; scaling[luma_src]
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m8, [scalingq+m4], m3
    vpgatherdd       m4, [scalingq+m5], m9
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m5, [scalingq+m6], m3
    vpgatherdd       m6, [scalingq+m7], m9
    pand             m8, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m8, m4
    packusdw         m5, m6

    ; unpack chroma_source
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word

    ; grain = grain_lut[offy+y][offx+x]
%if %2
    movu            xm3, [grain_lutq+offxyq+ 0]
    vinserti128      m3, [grain_lutq+offxyq+82], 1
%else
    movu             m3, [grain_lutq+offxyq]
%endif
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[luma_src] * grain, scaling_shift)
    pmullw           m2, m8
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
%if %2
    mova         [dstq], xm0
    vextracti128 [dstq+strideq], m0, 1
%else
    mova         [dstq], m0
%endif

%if %2
    lea            srcq, [srcq+strideq*2]
    lea            dstq, [dstq+strideq*2]
    lea           lumaq, [lumaq+lstrideq*(2<<%3)]
%else
    add            srcq, strideq
    add            dstq, strideq
    add           lumaq, lstrideq
%endif
    add      grain_lutq, 82<<%2
    sub              hb, 1+%2
    jg %%loop_y

    add              wq, 32>>%2
    jge %%end
    mov            srcq, r11mp
    mov            dstq, r12mp
    lea           lumaq, [r14+wq*(1+%2)]
    add            srcq, wq
    add            dstq, wq
    test       overlapd, overlapd
    jz %%loop_x

    ; r8m = sbym
    cmp       dword r8m, 0
    jne %%loop_x_hv_overlap

    ; horizontal overlap (without vertical overlap)
%%loop_x_h_overlap:
    mov             r6d, seed
    or             seed, 0xEFF4
    shr             r6d, 1
    test           seeb, seeh
    lea            seed, [r6+0x8000]
    cmovp          seed, r6d               ; updated seed

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                offx, offy, see, left_offxy, unused1, unused2, lstride

    lea     left_offxyd, [offyd+(32>>%2)]         ; previous column's offy*stride+offx
    mov           offxd, seed
    rorx          offyd, seed, 8
    shr           offxd, 12
    and           offyd, 0xf
    imul          offyd, 164>>%3
    lea           offyq, [offyq+offxq*(2-%2)+(3+(6>>%3))*82+3+(6>>%2)]  ; offy*stride+offx

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                h, offxy, see, left_offxy, unused1, unused2, lstride

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
%%loop_y_h_overlap:
    ; src
%if %2
    mova            xm4, [lumaq+lstrideq*0+ 0]
    mova            xm6, [lumaq+lstrideq*0+16]
    mova            xm0, [srcq]
    vpbroadcastd     m7, [pb_1]
    vinserti128      m4, [lumaq+lstrideq*(1+%3) +0], 1
    vinserti128      m6, [lumaq+lstrideq*(1+%3)+16], 1
    vinserti128      m0, [srcq+strideq], 1
    pxor             m2, m2
    pmaddubsw        m4, m7
    pmaddubsw        m6, m7
    pavgw            m4, m2
    pavgw            m6, m2
%else
    mova             m4, [lumaq]
    mova             m0, [srcq]
    pxor             m2, m2
%endif

%if %1
%if %2
    packuswb         m4, m6                 ; luma
%endif
    punpckhbw        m6, m4, m0
    punpcklbw        m4, m0                 ; { luma, chroma }
    pmaddubsw        m6, m14
    pmaddubsw        m4, m14
    psraw            m6, 6
    psraw            m4, 6
    paddw            m6, m15
    paddw            m4, m15
    packuswb         m4, m6                 ; pack+unpack = clip
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%elif %2 == 0
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%endif

    punpckhwd        m5, m4, m2
    punpcklwd        m4, m2
    punpckhwd        m7, m6, m2
    punpcklwd        m6, m2                 ; m4-7: luma_src as dword

    ; scaling[luma_src]
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m8, [scalingq+m4], m3
    vpgatherdd       m4, [scalingq+m5], m9
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m5, [scalingq+m6], m3
    vpgatherdd       m6, [scalingq+m7], m9
    pand             m8, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m8, m4
    packusdw         m5, m6

    ; unpack chroma_source
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word

    ; grain = grain_lut[offy+y][offx+x]
%if %2
%if %1
    vpbroadcastd     m6, [pb_23_22] ; FIXME
%endif
    movu            xm3, [grain_lutq+offxyq+ 0]
    movd            xm4, [grain_lutq+left_offxyq+ 0]
    vinserti128      m3, [grain_lutq+offxyq+82], 1
    vinserti128      m4, [grain_lutq+left_offxyq+82], 1
    punpcklbw        m4, m3
%if %1
    pmaddubsw        m4, m6, m4
    pmulhrsw         m4, [pw_1024]
%else
    pmaddubsw        m4, m15, m4
    pmulhrsw         m4, m14
%endif
    packsswb         m4, m4
    pcmpeqw          m6, m6 ; FIXME
    psrldq           m6, 15 ; FIXME
    vpblendvb        m3, m3, m4, m6
%else
%if %1
    vpbroadcastd    xm6, [pb_27_17_17_27]
%endif
    movu             m3, [grain_lutq+offxyq]
    movd            xm4, [grain_lutq+left_offxyq]
    punpcklbw       xm4, xm3
%if %1
    pmaddubsw       xm4, xm6, xm4
    pmulhrsw        xm4, [pw_1024]
%else
    pmaddubsw       xm4, xm15, xm4
    pmulhrsw        xm4, xm14
%endif
    packsswb        xm4, xm4
    pcmpeqw         xm6, xm6
    psrldq          xm6, 14
    vpblendvb        m3, m3, m4, m6
%endif
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[luma_src] * grain, scaling_shift)
    pmullw           m2, m8
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
%if %2
    mova         [dstq], xm0
    vextracti128 [dstq+strideq], m0, 1
%else
    mova         [dstq], m0
%endif

%if %2
    lea            srcq, [srcq+strideq*2]
    lea            dstq, [dstq+strideq*2]
    lea           lumaq, [lumaq+lstrideq*(2<<%3)]
%else
    add            srcq, strideq
    add            dstq, strideq
    add           lumaq, lstrideq
%endif
    add      grain_lutq, 82*(1+%2)
    sub              hb, 1+%2
    jg %%loop_y_h_overlap

    add              wq, 32>>%2
    jge %%end
    mov            srcq, r11mp
    mov            dstq, r12mp
    lea           lumaq, [r14+wq*(1+%2)]
    add            srcq, wq
    add            dstq, wq

    ; r8m = sbym
    cmp       dword r8m, 0
    jne %%loop_x_hv_overlap
    jmp %%loop_x_h_overlap

%%end:
    RET

%%vertical_overlap:
    DEFINE_ARGS dst, src, stride, fg_data, w, scaling, grain_lut, unused, \
                sby, see, overlap, unused1, unused2, lstride

    movzx          sbyd, sbyb
    imul           seed, [fg_dataq+FGData.seed], 0x00010001
    imul            r7d, sbyd, 173 * 0x00010001
    imul           sbyd, 37 * 0x01000100
    add             r7d, (105 << 16) | 188
    add            sbyd, (178 << 24) | (141 << 8)
    and             r7d, 0x00ff00ff
    and            sbyd, 0xff00ff00
    xor            seed, r7d
    xor            seed, sbyd               ; (cur_seed << 16) | top_seed

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                unused1, unused2, see, overlap, unused3, unused4, lstride

    mov           lumaq, r9mp
    lea             r12, [srcq+wq]
    lea             r13, [dstq+wq]
    lea             r14, [lumaq+wq*(1+%2)]
    mov           r11mp, r12
    mov           r12mp, r13
    mov        lstrideq, r10mp
    neg              wq

%%loop_x_v_overlap:
    ; we assume from the block above that bits 8-15 of r7d are zero'ed
    mov             r6d, seed
    or             seed, 0xeff4eff4
    test           seeb, seeh
    setp            r7b                     ; parity of top_seed
    shr            seed, 16
    shl             r7d, 16
    test           seeb, seeh
    setp            r7b                     ; parity of cur_seed
    or              r6d, 0x00010001
    xor             r7d, r6d
    rorx           seed, r7d, 1             ; updated (cur_seed << 16) | top_seed

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                offx, offy, see, overlap, top_offxy, unused, lstride

    rorx          offyd, seed, 8
    rorx          offxd, seed, 12
    and           offyd, 0xf000f
    and           offxd, 0xf000f
    imul          offyd, 164>>%3
    ; offxy=offy*stride+offx, (cur_offxy << 16) | top_offxy
    lea           offyq, [offyq+offxq*(2-%2)+0x10001*((3+(6>>%3))*82+3+(6>>%2))+(32>>%3)*82]

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                h, offxy, see, overlap, top_offxy, unused, lstride

    movzx    top_offxyd, offxyw
    shr          offxyd, 16

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
%if %2 == 0
    vbroadcasti128   m1, [pb_8x_27_17_8x_17_27]
%endif
%%loop_y_v_overlap:
    ; src
%if %2
    mova            xm4, [lumaq+lstrideq*0+ 0]
    mova            xm6, [lumaq+lstrideq*0+16]
    mova            xm0, [srcq]
    vpbroadcastd     m7, [pb_1]
    vinserti128      m4, [lumaq+lstrideq*(1+%3) +0], 1
    vinserti128      m6, [lumaq+lstrideq*(1+%3)+16], 1
    vinserti128      m0, [srcq+strideq], 1
    pxor             m2, m2
    pmaddubsw        m4, m7
    pmaddubsw        m6, m7
    pavgw            m4, m2
    pavgw            m6, m2
%else
    mova             m4, [lumaq]
    mova             m0, [srcq]
    pxor             m2, m2
%endif

%if %1
%if %2
    packuswb         m4, m6                 ; luma
%endif
    punpckhbw        m6, m4, m0
    punpcklbw        m4, m0                 ; { luma, chroma }
    pmaddubsw        m6, m14
    pmaddubsw        m4, m14
    psraw            m6, 6
    psraw            m4, 6
    paddw            m6, m15
    paddw            m4, m15
    packuswb         m4, m6                 ; pack+unpack = clip
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%elif %2 == 0
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%endif

    punpckhwd        m5, m4, m2
    punpcklwd        m4, m2
    punpckhwd        m7, m6, m2
    punpcklwd        m6, m2                 ; m4-7: luma_src as dword

    ; scaling[luma_src]
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m8, [scalingq+m4], m3
    vpgatherdd       m4, [scalingq+m5], m9
    pcmpeqw          m3, m3
    pcmpeqw          m9, m9
    vpgatherdd       m5, [scalingq+m6], m3
    vpgatherdd       m6, [scalingq+m7], m9
    pand             m8, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m8, m4
    packusdw         m5, m6

%if %2
    ; unpack chroma_source
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word
%endif

    ; grain = grain_lut[offy+y][offx+x]
%if %3 == 0
%if %2
    mova             m6, [pb_8x_27_17_8x_17_27]
    movu            xm3, [grain_lutq+offxyq]
    movu            xm4, [grain_lutq+top_offxyq]
    vinserti128      m3, [grain_lutq+offxyq+82], 1
    vinserti128      m4, [grain_lutq+top_offxyq+82], 1
%else
    movu             m3, [grain_lutq+offxyq]
    movu             m4, [grain_lutq+top_offxyq]
%endif
    punpckhbw        m9, m4, m3
    punpcklbw        m4, m3
%if %2
    pmaddubsw        m9, m6, m9
    pmaddubsw        m4, m6, m4
%else
    pmaddubsw        m9, m1, m9
    pmaddubsw        m4, m1, m4
%endif
%if %1
    pmulhrsw         m9, [pw_1024]
    pmulhrsw         m4, [pw_1024]
%else
    pmulhrsw         m9, m14
    pmulhrsw         m4, m14
%endif
    packsswb         m3, m4, m9
%else
%if %1
    vpbroadcastd     m6, [pb_23_22]
%endif
    movq            xm3, [grain_lutq+offxyq]
    movq            xm4, [grain_lutq+top_offxyq]
    vinserti128      m3, [grain_lutq+offxyq+8], 1
    vinserti128      m4, [grain_lutq+top_offxyq+8], 1
    punpcklbw        m4, m3
%if %1
    pmaddubsw        m4, m6, m4
    pmulhrsw         m4, [pw_1024]
%else
    pmaddubsw        m4, m15, m4
    pmulhrsw         m4, m14
%endif
    packsswb         m4, m4
    vpermq           m4, m4, q3120
    ; only interpolate first line, insert second line unmodified
    vinserti128      m3, m4, [grain_lutq+offxyq+82], 1
%endif
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[luma_src] * grain, scaling_shift)
    pmullw           m2, m8
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
%if %2
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
    mova         [dstq], xm0
    vextracti128 [dstq+strideq], m0, 1
%else
    pxor             m6, m6
    punpckhbw        m9, m0, m6
    punpcklbw        m0, m6                 ; m0-1: src as word

    paddw            m0, m2
    paddw            m9, m3
    pmaxsw           m0, m13
    pmaxsw           m9, m13
    pminsw           m0, m12
    pminsw           m9, m12
    packuswb         m0, m9
    mova         [dstq], m0
%endif

    sub              hb, 1+%2
    jl %%end_y_v_overlap
%if %2
    lea            srcq, [srcq+strideq*2]
    lea            dstq, [dstq+strideq*2]
    lea           lumaq, [lumaq+lstrideq*(2<<%3)]
%else
    add            srcq, strideq
    add            dstq, strideq
    add           lumaq, lstrideq
%endif
    add      grain_lutq, 82<<%2
%if %2 == 0
    vbroadcasti128   m1, [pb_8x_27_17_8x_17_27+16]
    btc              hd, 16
    jnc %%loop_y_v_overlap
%endif
    jmp %%loop_y

%%end_y_v_overlap:
    add              wq, 32>>%2
    jge %%end_hv
    mov            srcq, r11mp
    mov            dstq, r12mp
    lea           lumaq, [r14+wq*(1+%2)]
    add            srcq, wq
    add            dstq, wq

    ; since fg_dataq.overlap is guaranteed to be set, we never jump
    ; back to .loop_x_v_overlap, and instead always fall-through to
    ; h+v overlap

%%loop_x_hv_overlap:
    ; we assume from the block above that bits 8-15 of r7d are zero'ed
    mov             r6d, seed
    or             seed, 0xeff4eff4
    test           seeb, seeh
    setp            r7b                     ; parity of top_seed
    shr            seed, 16
    shl             r7d, 16
    test           seeb, seeh
    setp            r7b                     ; parity of cur_seed
    or              r6d, 0x00010001
    xor             r7d, r6d
    rorx           seed, r7d, 1             ; updated (cur_seed << 16) | top_seed

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                offx, offy, see, left_offxy, top_offxy, topleft_offxy, lstride

    lea  topleft_offxyq, [top_offxyq+(32>>%2)]
    lea     left_offxyq, [offyq+(32>>%2)]
    rorx          offyd, seed, 8
    rorx          offxd, seed, 12
    and           offyd, 0xf000f
    and           offxd, 0xf000f
    imul          offyd, 164>>%3
    ; offxy=offy*stride+offx, (cur_offxy << 16) | top_offxy
    lea           offyq, [offyq+offxq*(2-%2)+0x10001*((3+(6>>%3))*82+3+(6>>%2))+(32>>%3)*82]

    DEFINE_ARGS dst, src, stride, luma, w, scaling, grain_lut, \
                h, offxy, see, left_offxy, top_offxy, topleft_offxy, lstride

    movzx    top_offxyd, offxyw
    shr          offxyd, 16

    mov              hd, hm
    mov      grain_lutq, grain_lutmp
%if %2 == 0
    vbroadcasti128   m1, [pb_8x_27_17_8x_17_27]
%endif
%%loop_y_hv_overlap:
    ; src
%if %2
    mova            xm4, [lumaq+lstrideq*0+ 0]
    mova            xm6, [lumaq+lstrideq*0+16]
    mova            xm0, [srcq]
    vpbroadcastd     m7, [pb_1]
    vinserti128      m4, [lumaq+lstrideq*(1+%3) +0], 1
    vinserti128      m6, [lumaq+lstrideq*(1+%3)+16], 1
    vinserti128      m0, [srcq+strideq], 1
    pxor             m2, m2
    pmaddubsw        m4, m7
    pmaddubsw        m6, m7
    pavgw            m4, m2
    pavgw            m6, m2
%else
    mova             m4, [lumaq]
    mova             m0, [srcq]
    pxor             m2, m2
%endif

%if %1
%if %2
    packuswb         m4, m6                 ; luma
%endif
    punpckhbw        m6, m4, m0
    punpcklbw        m4, m0                 ; { luma, chroma }
    pmaddubsw        m6, m14
    pmaddubsw        m4, m14
    psraw            m6, 6
    psraw            m4, 6
    paddw            m6, m15
    paddw            m4, m15
    packuswb         m4, m6                 ; pack+unpack = clip
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%elif %2 == 0
    punpckhbw        m6, m4, m2
    punpcklbw        m4, m2
%endif

    punpckhwd        m5, m4, m2
    punpcklwd        m4, m2
    punpckhwd        m7, m6, m2
    punpcklwd        m6, m2                 ; m4-7: src as dword

    ; scaling[src]
    pcmpeqw          m9, m9
    pcmpeqw          m3, m3
    vpgatherdd       m8, [scalingq+m4], m9
    vpgatherdd       m4, [scalingq+m5], m3
    pcmpeqw          m9, m9
    pcmpeqw          m3, m3
    vpgatherdd       m5, [scalingq+m6], m9
    vpgatherdd       m6, [scalingq+m7], m3
    pand             m8, m10
    pand             m4, m10
    pand             m5, m10
    pand             m6, m10
    packusdw         m8, m4
    packusdw         m5, m6

%if %2
    ; unpack chroma source
    punpckhbw        m1, m0, m2
    punpcklbw        m0, m2                 ; m0-1: src as word
%endif

    ; grain = grain_lut[offy+y][offx+x]
%if %1
%if %2
    vpbroadcastd     m9, [pb_23_22]
%else
    vpbroadcastd    xm9, [pb_27_17_17_27]
%endif
%endif

%if %2
    movu            xm3, [grain_lutq+offxyq]
%if %3
    movq            xm6, [grain_lutq+top_offxyq]
%else
    movu            xm6, [grain_lutq+top_offxyq]
%endif
    vinserti128      m3, [grain_lutq+offxyq+82], 1
%if %3
    vinserti128      m6, [grain_lutq+top_offxyq+8], 1
%else
    vinserti128      m6, [grain_lutq+top_offxyq+82], 1
%endif
%else
    movu             m3, [grain_lutq+offxyq]
    movu             m6, [grain_lutq+top_offxyq]
%endif
    movd            xm4, [grain_lutq+left_offxyq]
    movd            xm7, [grain_lutq+topleft_offxyq]
%if %2
    vinserti128      m4, [grain_lutq+left_offxyq+82], 1
%if %3 == 0
    vinserti128      m7, [grain_lutq+topleft_offxyq+82], 1
%endif
%endif

    ; do h interpolation first (so top | top/left -> top, left | cur -> cur)
%if %2
    punpcklbw        m4, m3
%if %3
    punpcklbw       xm7, xm6
%else
    punpcklbw        m7, m6
%endif
    punpcklwd        m4, m7
%if %1
    pmaddubsw        m4, m9, m4
    pmulhrsw         m4, [pw_1024]
%else
    pmaddubsw        m4, m15, m4
    pmulhrsw         m4, m14
%endif
    packsswb         m4, m4
    pcmpeqw          m9, m9                 ; this is kind of ugly
    psrldq           m9, 15
    vpblendvb        m3, m3, m4, m9
    psrldq           m4, 1
%if %3
    shufpd           m9, m9, m9, 1110b      ; clear upper lane
%endif
    vpblendvb        m6, m6, m4, m9
%else
    punpcklbw       xm4, xm3
    punpcklbw       xm7, xm6
    punpckldq       xm4, xm7
%if %1
    pmaddubsw       xm4, xm9, xm4
    pmulhrsw        xm4, [pw_1024]
%else
    pmaddubsw       xm4, xm15, xm4
    pmulhrsw        xm4, xm14
%endif
    packsswb        xm4, xm4
    pcmpeqw         xm9, xm9                 ; this is kind of ugly
    psrldq          xm9, 14
    vpblendvb        m3, m3, m4, m9
    psrldq          xm4, 2
    vpblendvb        m6, m6, m4, m9
%endif

    ; followed by v interpolation (top | cur -> cur)
%if %3
    vpermq           m9, m3, q3120
    punpcklbw        m6, m9
%if %1
    vpbroadcastd     m9, [pb_23_22]
    pmaddubsw        m6, m9, m6
    pmulhrsw         m6, [pw_1024]
%else
    pmaddubsw        m6, m15, m6
    pmulhrsw         m6, m14
%endif
    packsswb         m6, m6
    vpermq           m6, m6, q3120
    vpblendd         m3, m3, m6, 00001111b
%else
    punpckhbw        m9, m6, m3
    punpcklbw        m6, m3
%if %2
    mova             m3, [pb_8x_27_17_8x_17_27]
    pmaddubsw        m9, m3, m9
    pmaddubsw        m6, m3, m6
%else
    pmaddubsw        m9, m1, m9
    pmaddubsw        m6, m1, m6
%endif
%if %1
    pmulhrsw         m9, [pw_1024]
    pmulhrsw         m6, [pw_1024]
%else
    pmulhrsw         m9, m14
    pmulhrsw         m6, m14
%endif
    packsswb         m3, m6, m9
%endif
    pcmpgtb          m7, m2, m3
    punpcklbw        m2, m3, m7
    punpckhbw        m3, m7

    ; noise = round2(scaling[src] * grain, scaling_shift)
    pmullw           m2, m8
    pmullw           m3, m5
    pmulhrsw         m2, m11
    pmulhrsw         m3, m11

    ; dst = clip_pixel(src, noise)
%if %2
    paddw            m0, m2
    paddw            m1, m3
    pmaxsw           m0, m13
    pmaxsw           m1, m13
    pminsw           m0, m12
    pminsw           m1, m12
    packuswb         m0, m1
    mova         [dstq], xm0
    vextracti128 [dstq+strideq], m0, 1
%else
    pxor             m6, m6
    punpckhbw        m9, m0, m6
    punpcklbw        m0, m6                 ; m0-1: src as word
    paddw            m0, m2
    paddw            m9, m3
    pmaxsw           m0, m13
    pmaxsw           m9, m13
    pminsw           m0, m12
    pminsw           m9, m12
    packuswb         m0, m9
    mova         [dstq], m0
%endif

%if %2
    lea            srcq, [srcq+strideq*2]
    lea            dstq, [dstq+strideq*2]
    lea           lumaq, [lumaq+lstrideq*(2<<%3)]
%else
    add            srcq, strideq
    add            dstq, strideq
    add           lumaq, lstrideq
%endif
    add      grain_lutq, 82<<%2
    sub              hb, 1+%2
%if %2
    jg %%loop_y_h_overlap
%else
    je %%end_y_hv_overlap
    vbroadcasti128   m1, [pb_8x_27_17_8x_17_27+16]
    btc              hd, 16
    jnc %%loop_y_hv_overlap
    jmp %%loop_y_h_overlap
%endif

%%end_y_hv_overlap:
    add              wq, 32>>%2
    jge %%end_hv
    mov            srcq, r11mp
    mov            dstq, r12mp
    lea           lumaq, [r14+wq*(1+%2)]
    add            srcq, wq
    add            dstq, wq
    jmp %%loop_x_hv_overlap

%%end_hv:
    RET
%endmacro

    %%FGUV_32x32xN_LOOP 1, %2, %3
.csfl:
    %%FGUV_32x32xN_LOOP 0, %2, %3
%endmacro

FGUV_FN 420, 1, 1
FGUV_FN 422, 1, 0
FGUV_FN 444, 0, 0

%endif ; ARCH_X86_64