+SECTION_RODATA 32
+
+const pb_1, times 32 db 1
+const hsub_mul, times 16 db 1, -1
+const pw_1, times 16 dw 1
+const pw_16, times 16 dw 16
+const pw_32, times 16 dw 32
+const pw_512, times 16 dw 512
+const pw_00ff, times 16 dw 0x00ff
+const pw_pixel_max,times 16 dw ((1 << BIT_DEPTH)-1)
+const pw_0to15, dw 0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15
+const pd_1, times 8 dd 1
+const deinterleave_shufd, dd 0,4,1,5,2,6,3,7
+const pb_unpackbd1, times 2 db 0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3
+const pb_unpackbd2, times 2 db 4,4,4,4,5,5,5,5,6,6,6,6,7,7,7,7