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kolibrios/programs/develop/libraries/libs-dev/libimg/xcf/composite_sse.asm
Ivan Baravy 0808796ed5 libimg: 
1. tiff (baseline) support
2. pnm (portable anymap) bilevel, grayscale (8bpp), pixmap (24bpp) support
3. xcf: optional layer merging/blending with sse (default is mmx)
4'. new formatting for my old code. more readable for now


git-svn-id: svn://kolibrios.org@2388 a494cfbc-eb01-0410-851d-a64ba20cac60
2012-02-23 22:09:09 +00:00

1316 lines
17 KiB
NASM
Raw Blame History

proc xcf._.blend_rgb
push eax ebx
xchg al, bh
mov ah, bh
neg ax
add ax, 0xffff
mul ah
neg ah
add ah, 0xff
xchg ah, bh
mov al, 0xff
cmp ah, bh
je @f
not al
div bh
@@:
mov ah, al
movd xmm1, eax
pop ebx eax
push ebx
shr eax, 8
shr ebx, 8
xchg al, bh
mov ah, bh
neg ax
add ax, 0xffff
mul ah
neg ah
add ah, 0xff
xchg ah, bh
mov al, 0xff
cmp ah, bh
je @f
not al
div bh
@@:
mov ah, al
movd ebx, xmm1
ror ebx, 16
mov bx, ax
rol ebx, 16
movd xmm1, ebx
pop ebx
; movdqu xmm1, xword[xcf._.xmm_000000ff]
; movdqa xmm4, xmm1
; movdqa xmm5, xmm1
; movdqa xmm6, xmm2
; psrldq xmm6, 3
; pand xmm6, xmm1
; psubw xmm4, xmm6
; movdqa xmm6, xmm3
; psrldq xmm6, 3
; pand xmm6, xmm1
; psubw xmm5, xmm6
; pmullw xmm4, xmm5
; psrlw xmm4, 8
; psubw xmm1, xmm4
; movdqa xmm4, xmm1
; movdqa xmm1, xmm6
; divps xmm1, xmm4
; packuswb xmm1, xmm0
; packuswb xmm1, xmm0
; punpcklbw xmm1, xmm1
punpcklbw xmm1, xmm1
punpcklbw xmm1, xmm0
movdqa xmm7, xmm1
psrlw xmm7, 7
paddw xmm1, xmm7
psubw xmm3, xmm2
pmullw xmm3, xmm1
psllw xmm2, 8
paddw xmm3, xmm2
pinsrw xmm3, ebx, 3
shr ebx, 8
pinsrw xmm3, ebx, 7
psrlw xmm3, 8
packuswb xmm3, xmm0
ret
endp
proc xcf._.blend_gray
xchg al, bh
mov ah, bh
neg ax
add ax, 0xffff
mul ah
neg ah
add ah, 0xff
xchg ah, bh
mov al, 0xff
cmp ah, bh
je @f
not al
div bh
@@:
mov ah, al
movd xmm1, eax
punpcklbw xmm1, xmm1
punpcklbw xmm1, xmm0
movq xmm7, xmm1
psrlw xmm7, 7
paddw xmm1, xmm7
psubw xmm3, xmm2
pmullw xmm3, xmm1
psllw xmm2, 8
paddw xmm3, xmm2
pinsrw xmm3, ebx, 1
psrlw xmm3, 8
packuswb xmm3, xmm0
ret
endp
proc xcf._.merge_32 _copy_width, _copy_height, _img_total_bpl, _bottom_total_bpl
pxor xmm0, xmm0
.line:
mov ecx, [_copy_width]
bt ecx, 0
jnc .even
.odd:
movd xmm2, [edi]
movd xmm3, [esi]
add esi, 4
movdqa xmm4, xmm2
pminub xmm4, xmm3
pextrw eax, xmm4, 3
pextrw ebx, xmm4, 1
mov al, bh
push eax
pextrw eax, xmm2, 3
pextrw ebx, xmm2, 1
mov bl, ah
shl ebx, 8
pop eax
call edx
call xcf._.blend_rgb
movd [edi], xmm3
add edi, 4
cmp ecx, 1
je .done
.even:
sub ecx, 2
.pixel:
movq xmm2, [edi]
movq xmm3, [esi]
add esi, 8
movdqa xmm4, xmm2
pminub xmm4, xmm3
pextrw eax, xmm4, 3
pextrw ebx, xmm4, 1
mov al, bh
push eax
pextrw eax, xmm2, 3
pextrw ebx, xmm2, 1
mov bl, ah
shl ebx, 8
pop eax
call edx
call xcf._.blend_rgb
movq [edi], xmm3
add edi, 8
sub ecx, 2
jns .pixel
add esi, [_img_total_bpl]
add edi, [_bottom_total_bpl]
dec [_copy_height]
jnz .line
.done:
ret
endp
proc xcf._.merge_8a _copy_width, _copy_height, _img_total_bpl, _bottom_total_bpl
.gray_line:
mov ecx, [_copy_width]
.gray_pixel:
mov bx, word[edi]
lodsw
movd xmm2, ebx
movd xmm3, eax
shr eax, 8
cmp al, bh
jna @f
mov al, bh
@@:
pxor xmm0, xmm0
call edx
call xcf._.blend_gray
movd eax, xmm3
stosw
dec ecx
jnz .gray_pixel
add esi, [_img_total_bpl]
add edi, [_bottom_total_bpl]
dec [_copy_height]
jnz .gray_line
ret
endp
proc xcf._.composite_rgb_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pxor xmm0, xmm0
.line:
mov ecx, [_copy_width]
bt ecx, 0
jnc .even
.odd:
movlpd xmm2, [edi]
movlpd xmm3, [esi]
add esi, 4
pextrw eax, xmm3, 3
pextrw ebx, xmm3, 1
mov al, bh
push eax
pextrw eax, xmm2, 3
pextrw ebx, xmm2, 1
mov bl, ah
shl ebx, 8
pop eax
xchg al, bh
mov ah, bh
neg al
neg ah
dec al
dec ah
mul ah
neg ah
dec ah
xchg ah, bh
mov al, 0xff
cmp ah, bh
je @f
inc al
div bh
@@:
mov ah, al
movd xmm1, eax
punpcklbw xmm1, xmm1
punpcklbw xmm1, xmm0
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
psubsw xmm3, xmm2
pmullw xmm3, xmm1
psllw xmm2, 8
paddw xmm3, xmm2
pinsrw xmm3, ebx, 3
shr ebx, 8
pinsrw xmm3, ebx, 7
psrlw xmm3, 8
packuswb xmm3, xmm0
movd [edi], xmm3
add edi, 4
cmp ecx, 1
je .done
.even:
sub ecx, 2
.pixel:
movlpd xmm2, [edi]
movlpd xmm3, [esi]
add esi, 8
pextrw eax, xmm3, 3
pextrw ebx, xmm3, 1
mov al, bh
push eax
pextrw eax, xmm2, 3
pextrw ebx, xmm2, 1
mov bl, ah
shl ebx, 8
pop eax
push eax ebx
xchg al, bh
mov ah, bh
neg al
neg ah
dec al
dec ah
mul ah
neg ah
dec ah
xchg ah, bh
mov al, 0xff
cmp ah, bh
je @f
inc al
div bh
@@:
mov ah, al
movd xmm1, eax
pop ebx eax
push ebx
shr eax, 8
shr ebx, 8
xchg al, bh
mov ah, bh
neg ax
add ax, 0xffff
mul ah
neg ah
add ah, 0xff
xchg ah, bh
mov al, 0xff
cmp ah, bh
je @f
not al
div bh
@@:
mov ah, al
movd ebx, xmm1
ror ebx, 16
mov bx, ax
rol ebx, 16
movd xmm1, ebx
pop ebx
punpcklbw xmm1, xmm1
punpcklbw xmm1, xmm0
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
psubsw xmm3, xmm2
pmullw xmm3, xmm1
psllw xmm2, 8
paddw xmm3, xmm2
pinsrw xmm3, ebx, 3
shr ebx, 8
pinsrw xmm3, ebx, 7
psrlw xmm3, 8
packuswb xmm3, xmm0
movq [edi], xmm3
add edi, 8
sub ecx, 2
jns .pixel
add esi, [_img_total_bpl]
add edi, [_bottom_total_bpl]
dec [_copy_height]
jnz .line
.done:
ret
endp
proc xcf._.composite_gray_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
.line:
mov ecx, [_copy_width]
.pixel:
mov bx, [edi]
lodsw
movd xmm2, ebx
movd xmm3, eax
shr eax, 8
xchg al, bh
mov ah, bh
neg ax
add ax, 0xffff
mul ah
neg ah
add ah, 0xff
xchg ah, bh
mov al, 0xff
cmp ah, bh
je @f
not al
div bh
@@:
mov ah, al
movd xmm1, eax
pxor xmm0, xmm0
punpcklbw xmm1, xmm1
punpcklbw xmm1, xmm0
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
psubw xmm3, xmm2
pmullw xmm3, xmm1
psllw xmm2, 8
paddw xmm3, xmm2
pinsrw xmm3, ebx, 1
psrlw xmm3, 8
packuswb xmm3, xmm0
movd eax, xmm3
stosw
dec ecx
jnz .pixel
add esi, [_img_total_bpl]
add edi, [_bottom_total_bpl]
dec [_copy_height]
jnz .line
ret
endp
proc xcf._.composite_indexed_00 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
.line:
mov ecx, [_copy_width]
.pixel:
mov bx, [edi]
lodsw
or ah, 0x7f
test ah, 0x80
jnz @f
mov ax, bx
@@:
stosw
dec ecx
jnz .pixel
add esi, [_img_total_bpl]
add edi, [_bottom_total_bpl]
dec [_copy_height]
jnz .line
ret
endp
proc xcf._.composite_rgb_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pushad
pxor xmm4, xmm4
movd xmm4, [xcf._.random_b]
movd xmm1, [xcf._.random_a]
movd xmm2, [xcf._.random_c]
.line:
mov ecx, [_copy_width]
.pixel:
mov ebx, [edi]
lodsd
movq xmm0, xmm4
pmuludq xmm0, xmm1
paddq xmm0, xmm2
movd edx, xmm0
movd xmm4, edx
pxor xmm0, xmm0
rol eax, 8
test al, al
jz @f
shr edx, 17
cmp dl, al
ja @f
ror eax, 8
or eax, 0xff000000
jmp .done
@@:
mov eax, ebx
.done:
stosd
dec ecx
jnz .pixel
add esi, [_img_total_bpl]
add edi, [_bottom_total_bpl]
dec [_copy_height]
jnz .line
.quit:
popad
ret
endp
proc xcf._.composite_gray_01 _copy_width, _copy_height, _bottom_total_bpl, _img_total_bpl
pushad
pxor xmm4, xmm4
movd xmm4, [xcf._.random_b]
movd xmm1, [xcf._.random_a]
movd xmm2, [xcf._.random_c]
.line:
mov ecx, [_copy_width]
.pixel:
mov ebx, [edi]
lodsw
movq xmm0, xmm4
pmuludq xmm0, xmm1
paddq xmm0, xmm2
movd edx, xmm0
movd xmm4, edx
pxor xmm0, xmm0
test ah, ah
jz @f
shr edx, 17
cmp dl, ah
ja @f
or ax, 0xff00
jmp .done
@@:
mov eax, ebx
.done:
stosw
dec ecx
jnz .pixel
add esi, [_img_total_bpl]
add edi, [_bottom_total_bpl]
dec [_copy_height]
jnz .line
.quit:
popad
ret
endp
proc xcf._.composite_rgb_03 ; Multiply
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
pmullw xmm3, xmm2
psrlw xmm3, 8
ret
endp
proc xcf._.composite_rgb_04 ; Screen
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
movdqu xmm5, xword[xcf._.xmm_00ff]
movdqa xmm4, xmm5
psubw xmm4, xmm2
psubw xmm3, xmm5
pmullw xmm3, xmm4
psrlw xmm3, 8
paddw xmm3, xmm5
ret
endp
proc xcf._.composite_rgb_05 ; Overlay
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
movdqu xmm4, xword[xcf._.xmm_00ff]
psubw xmm4, xmm2
pmullw xmm3, xmm4
psrlw xmm3, 7
paddw xmm3, xmm2
pmullw xmm3, xmm2
psrlw xmm3, 8
ret
endp
proc xcf._.composite_rgb_06 ; Difference
movdqa xmm4, xmm3
pminub xmm4, xmm2
pmaxub xmm3, xmm2
psubusb xmm3, xmm4
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
ret
endp
proc xcf._.composite_rgb_07 ; Addition
paddusb xmm3, xmm2
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
ret
endp
proc xcf._.composite_rgb_08 ; Subtract
movdqa xmm4, xmm2
psubusb xmm4, xmm3
movq xmm3, xmm4
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
ret
endp
proc xcf._.composite_rgb_09 ; Darken Only
pminub xmm3, xmm2
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
ret
endp
proc xcf._.composite_rgb_10 ; Lighten Only
pmaxub xmm3, xmm2
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
ret
endp
proc xcf._.composite_rgb_11 ; Hue (H of HSV)
push eax ebx ecx edx
movd eax, xmm3
movd ebx, xmm2
call xcf._.rgb2hsv
xchg eax, ebx
call xcf._.rgb2hsv
xchg eax, ebx
test ah, ah
jnz @f
ror eax, 8
ror ebx, 8
mov ah, bh
rol eax, 8
rol ebx, 8
@@:
mov ax, bx
call xcf._.hsv2rgb
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
call xcf._.rgb2hsv
xchg eax, ebx
call xcf._.rgb2hsv
xchg eax, ebx
test ah, ah
jnz @f
ror eax, 8
ror ebx, 8
mov ah, bh
rol eax, 8
rol ebx, 8
@@:
mov ax, bx
call xcf._.hsv2rgb
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
.quit:
pop edx ecx ebx eax
ret
endp
proc xcf._.composite_rgb_12 ; Saturation (S of HSV)
push eax ebx ecx edx
movd eax, xmm3
movd ebx, xmm2
call xcf._.rgb2hsv
xchg eax, ebx
call xcf._.rgb2hsv
xchg eax, ebx
ror eax, 8
ror ebx, 8
mov ah, bh
rol eax, 8
rol ebx, 8
mov al, bl
call xcf._.hsv2rgb
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
call xcf._.rgb2hsv
xchg eax, ebx
call xcf._.rgb2hsv
xchg eax, ebx
ror eax, 8
ror ebx, 8
mov ah, bh
rol eax, 8
rol ebx, 8
mov al, bl
call xcf._.hsv2rgb
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
.quit:
pop edx ecx ebx eax
ret
endp
proc xcf._.composite_rgb_13 ; Color (H and S of HSL)
push eax ebx ecx edx
movd eax, xmm3
movd ebx, xmm2
call xcf._.rgb2hsl
xchg eax, ebx
call xcf._.rgb2hsl
xchg eax, ebx
mov al, bl
call xcf._.hsl2rgb
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
call xcf._.rgb2hsl
xchg eax, ebx
call xcf._.rgb2hsl
xchg eax, ebx
mov al, bl
call xcf._.hsl2rgb
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
.quit:
pop edx ecx ebx eax
ret
endp
proc xcf._.composite_rgb_14 ; Value (V of HSV)
push eax ebx ecx edx
movd eax, xmm3
movd ebx, xmm2
call xcf._.rgb2hsv
xchg eax, ebx
call xcf._.rgb2hsv
xchg eax, ebx
ror eax, 8
ror ebx, 8
mov ax, bx
rol eax, 8
rol ebx, 8
call xcf._.hsv2rgb
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
call xcf._.rgb2hsv
xchg eax, ebx
call xcf._.rgb2hsv
xchg eax, ebx
ror eax, 8
ror ebx, 8
mov ax, bx
rol eax, 8
rol ebx, 8
call xcf._.hsv2rgb
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
.quit:
pop edx ecx ebx eax
ret
endp
proc xcf._.composite_rgb_15 ; Divide
push eax ebx ecx
movd eax, xmm3
movd ebx, xmm2
rol eax, 8
rol ebx, 8
xchg eax, ebx
mov ecx, 3
.color:
rol eax, 8
rol ebx, 8
shl ax, 8
test bl, bl
jz .clamp1
cmp ah, bl
jae .clamp2
div bl
jmp .done
.clamp1:
mov al, 0xff
test ah, ah
jnz @f
not al
@@:
jmp .done
.clamp2:
mov al, 0xff
jmp .done
.done:
mov ah, al
loop .color
ror eax, 8
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
rol eax, 8
rol ebx, 8
xchg eax, ebx
mov ecx, 3
.color2:
rol eax, 8
rol ebx, 8
shl ax, 8
test bl, bl
jz .clamp12
cmp ah, bl
jae .clamp22
div bl
jmp .done2
.clamp12:
mov al, 0xff
test ah, ah
jnz @f
not al
@@:
jmp .done2
.clamp22:
mov al, 0xff
jmp .done2
.done2:
mov ah, al
loop .color2
ror eax, 8
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
pop ecx ebx eax
ret
endp
proc xcf._.composite_rgb_16 ; Dodge
push eax ebx ecx
movd eax, xmm3
movd ebx, xmm2
rol eax, 8
rol ebx, 8
xchg eax, ebx
mov ecx, 3
.color:
rol eax, 8
rol ebx, 8
shl ax, 8
neg bl
add bl, 0xff
test bl, bl
jz .clamp1
cmp ah, bl
jae .clamp2
div bl
jmp .done
.clamp1:
mov al, 0xff
test ah, ah
jnz @f
not al
@@:
jmp .done
.clamp2:
mov al, 0xff
jmp .done
.done:
mov ah, al
loop .color
ror eax, 8
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
rol eax, 8
rol ebx, 8
xchg eax, ebx
mov ecx, 3
.color2:
rol eax, 8
rol ebx, 8
shl ax, 8
neg bl
add bl, 0xff
test bl, bl
jz .clamp12
cmp ah, bl
jae .clamp22
div bl
jmp .done2
.clamp12:
mov al, 0xff
test ah, ah
jnz @f
not al
@@:
jmp .done2
.clamp22:
mov al, 0xff
jmp .done2
.done2:
mov ah, al
loop .color2
ror eax, 8
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
pop ecx ebx eax
ret
endp
proc xcf._.composite_rgb_17 ; Burn
push eax ebx ecx
movd eax, xmm3
movd ebx, xmm2
rol eax, 8
rol ebx, 8
xchg eax, ebx
mov ecx, 3
.color:
rol eax, 8
rol ebx, 8
shl ax, 8
neg ah
add ah, 0xff
test bl, bl
jz .clamp1
cmp ah, bl
jae .clamp2
div bl
jmp .done
.clamp1:
mov al, 0xff
test ah, ah
jnz @f
not al
@@:
jmp .done
.clamp2:
mov al, 0xff
jmp .done
.done:
mov ah, al
neg ah
add ah, 0xff
loop .color
ror eax, 8
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
rol eax, 8
rol ebx, 8
xchg eax, ebx
mov ecx, 3
.color2:
rol eax, 8
rol ebx, 8
shl ax, 8
neg ah
add ah, 0xff
test bl, bl
jz .clamp12
cmp ah, bl
jae .clamp22
div bl
jmp .done2
.clamp12:
mov al, 0xff
test ah, ah
jnz @f
not al
@@:
jmp .done2
.clamp22:
mov al, 0xff
jmp .done2
.done2:
mov ah, al
neg ah
add ah, 0xff
loop .color2
ror eax, 8
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
pop ecx ebx eax
ret
endp
proc xcf._.composite_rgb_18 ; Hard Light
push eax ebx ecx
movd eax, xmm3
movd ebx, xmm2
rol eax, 8
rol ebx, 8
mov ecx, 3
.color:
rol eax, 8
rol ebx, 8
cmp al, 127
jna .part1
mov ah, 0xff
sub ah, bl
neg al
add al, 0xff
mul ah
shl ax, 1
neg ah
add ah, 0xff
jmp .done
.part1:
mul bl
shl ax, 1
.done:
loop .color
ror eax, 8
push eax
movq xmm1, xmm3
psrldq xmm1, 4
movd eax, xmm1
movq xmm1, xmm2
psrldq xmm1, 4
movd ebx, xmm1
rol eax, 8
rol ebx, 8
mov ecx, 3
.color2:
rol eax, 8
rol ebx, 8
cmp al, 127
jna .part12
mov ah, 0xff
sub ah, bl
neg al
add al, 0xff
mul ah
shl ax, 1
neg ah
add ah, 0xff
jmp .done2
.part12:
mul bl
shl ax, 1
.done2:
loop .color2
ror eax, 8
movd xmm3, eax
pslldq xmm3, 4
pop eax
movd xmm1, eax
paddq xmm3, xmm1
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
pop ecx ebx eax
ret
endp
proc xcf._.composite_rgb_20 ; Grain Extract
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
movdqu xmm4, xmm2
psubw xmm3, xword[xcf._.xmm_0080]
psubw xmm4, xmm3
movdqa xmm3, xmm4
packuswb xmm3, xmm0
punpcklbw xmm3, xmm0
ret
endp
proc xcf._.composite_rgb_21 ; Grain Merge
punpcklbw xmm2, xmm0
punpcklbw xmm3, xmm0
paddw xmm3, xmm2
psubusw xmm3, xword[xcf._.xmm_0080]
packuswb xmm3, xmm0
punpcklbw xmm3, xmm0
ret
endp
; starting numbers for pseudo-random number generator
xcf._.random_a dd 1103515245
xcf._.random_b dd 777
xcf._.random_c dd 12345
xcf._.xmm_8080 dq 0x8080808080808080, 0x8080808080808080
xcf._.xmm_0080 dq 0x0080008000800080, 0x0080008000800080
xcf._.xmm_00ff dq 0x00ff00ff00ff00ff, 0x00ff00ff00ff00ff
xcf._.xmm_0100 dq 0x0100010001000100, 0x0100010001000100
xcf._.xmm_000000ff dq 0x000000ff000000ff, 0x0000000000000000
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