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Inline an unnecessary block.
This commit is contained in:
Kartik K. Agaram 2021-07-11 09:17:15 -07:00
parent 5234ba60f5
commit 7e21abe0c9
1 changed files with 30 additions and 32 deletions
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@ -487,40 +487,38 @@ fn _dither-pgm-unordered src: (addr array byte), width: int, height: int, buf: (
compare x, width
break-if->=
var error/ebx: int <- _read-dithering-error buf, x, y, width
# error += src_color << 16
var curr/eax: byte <- _read-pgm-buffer src, x, y, width
var curr-int/eax: int <- copy curr
#? draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, curr-int, 2/fg 0/bg
curr-int <- shift-left 0x10 # we have 32 bits; we'll use 16 bits for the fraction and leave 8 for unanticipated overflow
error <- add curr-int
# tmp = max(error, 0)
var tmp/eax: int <- copy error
{
# error += src_color << 16
var curr/eax: byte <- _read-pgm-buffer src, x, y, width
var curr-int/eax: int <- copy curr
#? draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, curr-int, 2/fg 0/bg
curr-int <- shift-left 0x10 # we have 32 bits; we'll use 16 bits for the fraction and leave 8 for unanticipated overflow
error <- add curr-int
# tmp = max(error, 0)
var tmp/eax: int <- copy error
{
compare tmp, 0
break-if->=
tmp <- copy 0
}
# round tmp to nearest multiple of 0x100000
{
var tmp2/ecx: int <- copy tmp
tmp2 <- and 0xfffff
compare tmp2, 0x80000
break-if-<
tmp <- add 0x80000
}
tmp <- and 0xf00000
# error -= tmp
error <- subtract tmp
# color = tmp >> 20 + 16
var color/eax: int <- copy tmp
color <- shift-right-signed 0x14
color <- add 0x10
#? draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, color, 3/fg 0/bg
#? draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, " ", 7/fg 0/bg
var color-byte/eax: byte <- copy-byte color
_write-raw-buffer dest, x, y, width, color-byte
compare tmp, 0
break-if->=
tmp <- copy 0
}
# round tmp to nearest multiple of 0x100000
{
var tmp2/ecx: int <- copy tmp
tmp2 <- and 0xfffff
compare tmp2, 0x80000
break-if-<
tmp <- add 0x80000
}
tmp <- and 0xf00000
# error -= tmp
error <- subtract tmp
# color = tmp >> 20 + 16
var color/eax: int <- copy tmp
color <- shift-right-signed 0x14
color <- add 0x10
#? draw-int32-decimal-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, color, 3/fg 0/bg
#? draw-text-wrapping-right-then-down-from-cursor-over-full-screen 0/screen, " ", 7/fg 0/bg
var color-byte/eax: byte <- copy-byte color
_write-raw-buffer dest, x, y, width, color-byte
_diffuse-dithering-error-floyd-steinberg buf, x, y, width, height, error
x <- increment
loop