;SIZE_X equ 350
;SIZE_Y equ 350
;ROUND equ 8
;TEX_X equ 512
;TEX_Y equ 512
;TEXTURE_SIZE EQU (512*512)-1
;TEX_SHIFT EQU 9
CATMULL_SHIFT equ 8
TEXTURE_SIZE EQU (TEX_X * TEX_Y)-1
;SSE3 = 4
;SSE2 = 3
;SSE = 2
;MMX = 1
;NON = 0
;Ext = NON
;use32
;------- Big thanks to Majuma (www.majuma.xt.pl) for absolutely great---
;------- DOS 13h mode demos --------------------------------------------
;------- Procedure draws triangle with two overlapped textures, I use --
;--------Catmull Z-buffer algorithm- (Z coordinate interpolation)-------
;--------I calc texture pixel by this way: col1*col2/256 ---------------
two_tex_triangle_z:
;------------------in - eax - x1 shl 16 + y1 -----------
;---------------------- ebx - x2 shl 16 + y2 -----------
;---------------------- ecx - x3 shl 16 + y3 -----------
;---------------------- edx - pointer to b. texture-----
;---------------------- esi - pointer to e. texture-----
;---------------------- edi - pointer to screen buffer--
;---------------------- stack : b. tex coordinates------
;---------------------- e. tex coordinates------
;---------------------- Z position coordinates--
;---------------------- pointer io Z buffer-----
;-- Z-buffer - filled with coordinates as dword --------
;-- (Z coor. as word) shl CATMULL_SHIFT ----------------
.e_x1 equ ebp+4 ; procedure don't save registers !!!
.e_y1 equ ebp+6 ; each coordinate as word
.b_x1 equ ebp+8
.b_y1 equ ebp+10
.e_x2 equ ebp+12
.e_y2 equ ebp+14
.b_x2 equ ebp+16
.b_y2 equ ebp+18 ; b - first texture
.e_x3 equ ebp+20
.e_y3 equ ebp+22 ; e - second texture
.b_x3 equ ebp+24
.b_y3 equ ebp+26
.z1 equ word[ebp+28]
.z2 equ word[ebp+30]
.z3 equ word[ebp+32]
.z_buff equ dword[ebp+34] ; pointer to Z-buffer
.t_bmap equ dword[ebp-4] ; pointer to b. texture
.t_emap equ dword[ebp-8] ; pointer to e. texture
.x1 equ word[ebp-10]
.y1 equ word[ebp-12]
.x2 equ word[ebp-14]
.y2 equ word[ebp-16]
.x3 equ word[ebp-18]
.y3 equ word[ebp-20]
.dx12 equ dword[ebp-24]
.dbx12 equ [ebp-28]
.dby12 equ dword[ebp-32]
.dby12q equ [ebp-32]
.dex12 equ dword[ebp-36]
.dey12 equ dword[ebp-40]
.dey12q equ [ebp-40]
.dz12 equ [ebp-44]
.dx13 equ dword[ebp-48]
.dbx13 equ [ebp-52]
.dby13 equ dword[ebp-56]
.dby13q equ [ebp-56]
.dex13 equ dword[ebp-60]
.dey13 equ dword[ebp-64]
.dey13q equ [ebp-64]
.dz13 equ [ebp-68]
.dx23 equ dword[ebp-72]
.dbx23 equ [ebp-76]
.dby23 equ dword[ebp-80]
.dby23q equ [ebp-80]
.dex23 equ dword[ebp-84]
.dey23 equ dword[ebp-88]
.dey23q equ [ebp-88]
.dz23 equ [ebp-92]
.cx1 equ dword[ebp-96] ; current variables
.cx2 equ dword[ebp-100]
.cbx1 equ dword[ebp-104]
.cby1 equ [ebp-108]
.cex1 equ dword[ebp-112]
.cey1 equ [ebp-116]
.cbx2 equ dword[ebp-120]
.cby2 equ [ebp-124]
.cex2 equ dword[ebp-128]
.cey2 equ [ebp-132]
.cz1 equ dword[ebp-136]
.cz2 equ dword[ebp-140]
if Ext >= MMX
emms
else
cld
end if
mov ebp,esp
push edx esi ; store bump map
; push esi ; store e. map
; sub esp,120
.sort3: ; sort triangle coordinates...
cmp ax,bx
jle .sort1
xchg eax,ebx
mov edx,dword[.b_x1]
xchg edx,dword[.b_x2]
mov dword[.b_x1],edx
mov edx,dword[.e_x1]
xchg edx,dword[.e_x2]
mov dword[.e_x1],edx
mov dx,.z1
xchg dx,.z2
mov .z1,dx
.sort1:
cmp bx,cx
jle .sort2
xchg ebx,ecx
mov edx,dword[.b_x2]
xchg edx,dword[.b_x3]
mov dword[.b_x2],edx
mov edx,dword[.e_x2]
xchg edx,dword[.e_x3]
mov dword[.e_x2],edx
mov dx,.z2
xchg dx,.z3
mov .z2,dx
jmp .sort3
.sort2:
push eax ebx ecx ; store triangle coords in variables
mov edx,80008000h ; eax,ebx,ecx are ANDd together into edx which means that
and edx,ebx ; if *all* of them are negative a sign flag is raised
and edx,ecx
and edx,eax
test edx,80008000h ; Check both X&Y at once
jne .loop23_done
; mov edx,eax ; eax,ebx,ecx are ORd together into edx which means that
; or edx,ebx ; if any *one* of them is negative a sign flag is raised
; or edx,ecx
; test edx,80000000h ; Check only X
; jne .loop23_done
; cmp .x1,SIZE_X ; {
; jg .loop23_done
; cmp .x2,SIZE_X ; This can be optimized with effort
; jg .loop23_done
; cmp .x3,SIZE_X
; jg .loop23_done ; {
; sub esp,18*4
; pxor xmm7,xmm7
mov bx,.y2 ; calc delta 12
sub bx,.y1
jnz .bt_dx12_make
mov ecx,6
xor edx,edx
@@:
push edx ;dword 0
loop @b
jmp .bt_dx12_done
.bt_dx12_make:
movsx ebx,bx
mov eax,1 shl 15
cdq
idiv ebx
mov ebx,eax
mov ax,.x2
sub ax,.x1
cwde
imul ebx
sar eax,15 - ROUND
push eax
; mov .dx12,eax
if Ext >= SSE2
sub esp,4*4
movd xmm0,ebx
pshuflw xmm0,xmm0,0
movq xmm1,[.e_x1]
movq xmm2,[.e_x2]
psubw xmm2,xmm1
movdqa xmm3,xmm2
pmullw xmm2,xmm0
pmulhw xmm3,xmm0
punpcklwd xmm2,xmm3
psrad xmm2,15 - ROUND
pshufd xmm2,xmm2,10110001b
movdqu .dey12q,xmm2
else
mov ax,word[.b_x2]
sub ax,word[.b_x1]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.b_y2]
sub ax,word[.b_y1]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.e_x2]
sub ax,word[.e_x1]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.e_y2]
sub ax,word[.e_y1]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
end if
mov ax,.z2
sub ax,.z1
cwde
imul ebx
sar eax,15 - ROUND
push eax
; mov .dz12,eax
.bt_dx12_done:
mov bx,.y3 ; calc delta13
sub bx,.y1
jnz .bt_dx13_make
mov ecx,6
xor edx,edx
@@:
push edx ;dword 0
loop @b
; movq .dbx13,xmm7
; movdqu .dz13,xmm7
jmp .bt_dx13_done
.bt_dx13_make:
; sub esp,6*4
movsx ebx,bx
mov eax,1 shl 15
cdq
idiv ebx
; push eax
mov ebx,eax
mov ax,.x3
sub ax,.x1
cwde
imul ebx
sar eax,15 - ROUND
push eax
; mov .dx13,eax
if 1
sub esp,4*4
movd xmm0,ebx
pshuflw xmm0,xmm0,0
movq xmm1,[.e_x1]
movq xmm2,[.e_x3]
psubw xmm2,xmm1
movdqa xmm3,xmm2
pmullw xmm2,xmm0
pmulhw xmm3,xmm0
punpcklwd xmm2,xmm3
psrad xmm2,15 - ROUND
pshufd xmm2,xmm2,10110001b
movdqu .dey13q,xmm2
; punpcklwd xmm4,xmm5
; psrad xmm4,15 - ROUND
; movq .tex_dx12,xmm4
else
mov ax,word[.b_x3]
sub ax,word[.b_x1]
cwde
; shl eax,ROUND
; cdq
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.b_y3]
sub ax,word[.b_y1]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.e_x3]
sub ax,word[.e_x1]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.e_y3]
sub ax,word[.e_y1]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
end if
mov ax,.z3
sub ax,.z1
cwde
imul ebx
sar eax,15 - ROUND
push eax
; mov .dz13,eax
.bt_dx13_done:
mov bx,.y3 ; calc delta23
sub bx,.y2
jnz .bt_dx23_make
mov ecx,6
xor edx,edx
@@:
push edx ;dword 0
loop @b
; movq .dbx23,xmm7
; movdqu .dz23,xmm7
jmp .bt_dx23_done
.bt_dx23_make:
movsx ebx,bx
mov eax,1 shl 15
cdq
idiv ebx
; push eax
mov ebx,eax
mov ax,.x3
sub ax,.x2
cwde
imul ebx
sar eax,15 - ROUND
push eax
; mov .dx23,eax
if Ext >= SSE2
sub esp,4*4
movd xmm0,ebx
pshuflw xmm0,xmm0,0
movq xmm1,[.e_x2]
movq xmm2,[.e_x3]
psubw xmm2,xmm1
movdqa xmm3,xmm2
pmullw xmm2,xmm0
pmulhw xmm3,xmm0
punpcklwd xmm2,xmm3
psrad xmm2,15 - ROUND
pshufd xmm2,xmm2,10110001b
movdqu .dey23q,xmm2
else
mov ax,word[.b_x3]
sub ax,word[.b_x2]
cwde
; shl eax,ROUND
; cdq
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.b_y3]
sub ax,word[.b_y2]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.e_x3]
sub ax,word[.e_x2]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
mov ax,word[.e_y3]
sub ax,word[.e_y2]
cwde
imul ebx
sar eax,15 - ROUND
; mov .dbx23,eax
push eax
end if
mov ax,.z3
sub ax,.z2
cwde
imul ebx
sar eax,15 - ROUND
push eax
; mov .dz23,eax
.bt_dx23_done:
movsx eax,.x1
shl eax,ROUND
; mov .cx1,eax
; mov .cx2,eax
push eax eax
; push eax
sub esp,32
; push eax eax
;push eax
movsx eax,.z1
shl eax,CATMULL_SHIFT
; mov .cz1,eax
; mov .cz2,eax
push eax eax
;push eax
movsx eax,word[.b_x1]
shl eax,ROUND
mov .cbx1,eax
mov .cbx2,eax
; push eax eax
; push eax
movsx eax,word[.b_y1]
shl eax,ROUND
mov .cby1,eax
mov .cby2,eax
; push eax eax
; push eax
movsx eax,word[.e_x1]
shl eax,ROUND
mov .cex1,eax
mov .cex2,eax
; push eax eax
;push eax
movsx eax,word[.e_y1]
shl eax,ROUND
mov .cey1,eax
mov .cey2,eax
movsx ecx,.y1
cmp cx,.y2
jge .loop12_done
.loop12:
call .call_line
mov eax,.dx13
add .cx1,eax
mov ebx,.dx12
add .cx2,ebx
if Ext>= SSE2
movups xmm0,.cey1
movups xmm1,.cey2
movups xmm2,.dey12q
movups xmm3,.dey13q
paddd xmm0,xmm3
paddd xmm1,xmm2
movups .cey1,xmm0
movups .cey2,xmm1
else if (Ext = MMX) | (Ext=SSE)
movq mm0,.cby2 ; with this optimization object
movq mm1,.cby1 ; looks bit annoying
movq mm2,.cey2
movq mm3,.cey1
paddd mm0,.dby12q
paddd mm1,.dby13q
paddd mm2,.dey12q
paddd mm3,.dey13q
movq .cby2,mm0
movq .cby1,mm1
movq .cey1,mm3
movq .cey2,mm2
else
mov edx,.dbx13
add .cbx1,edx
mov eax,.dbx12
add .cbx2,eax
mov ebx,.dby13
add .cby1,ebx
mov edx,.dby12
add .cby2,edx
mov eax,.dex13
add .cex1,eax
mov ebx,.dex12
add .cex2,ebx
mov edx,.dey13
add .cey1,edx
mov eax,.dey12
add .cey2,eax
end if
mov ebx,.dz13
add .cz1,ebx
mov edx,.dz12
add .cz2,edx
inc ecx
cmp cx,.y2
jl .loop12
.loop12_done:
movsx ecx,.y2
cmp cx,.y3
jge .loop23_done
movsx eax,.z2
shl eax,CATMULL_SHIFT
mov .cz2,eax
movsx eax,.x2
shl eax,ROUND
mov .cx2,eax
movzx eax,word[.b_x2]
shl eax,ROUND
mov .cbx2,eax
movzx eax,word[.b_y2]
shl eax,ROUND
mov .cby2,eax
movzx eax,word[.e_x2]
shl eax,ROUND
mov .cex2,eax
movzx eax,word[.e_y2]
shl eax,ROUND
mov .cey2,eax
.loop23:
call .call_line
;if Ext = NON
mov eax,.dx13
add .cx1,eax
mov ebx,.dx23
add .cx2,ebx
if Ext>= SSE2
movups xmm0,.cey1
movups xmm1,.cey2
movups xmm2,.dey23q
movups xmm3,.dey13q
paddd xmm0,xmm3
paddd xmm1,xmm2
movups .cey1,xmm0
movups .cey2,xmm1
else if (Ext = MMX) | ( Ext = SSE)
movq mm0,.cby2 ; with this mmx optimization object looks bit
movq mm1,.cby1 ; annoying
movq mm2,.cey2
movq mm3,.cey1
paddd mm0,.dby23q
paddd mm1,.dby13q
paddd mm2,.dey23q
paddd mm3,.dey13q
movq .cby2,mm0
movq .cby1,mm1
movq .cey2,mm2
movq .cey1,mm3
else
mov edx,.dbx13
add .cbx1,edx
mov eax,.dbx23
add .cbx2,eax
mov ebx,.dby13
add .cby1,ebx
mov edx,.dby23
add .cby2,edx
mov eax,.dex13
add .cex1,eax
mov ebx,.dex23
add .cex2,ebx
mov edx,.dey13
add .cey1,edx
mov eax,.dey23
add .cey2,eax
end if
mov ebx,.dz13
add .cz1,ebx
mov edx,.dz23
add .cz2,edx
;else
; movq mm0,.db13q
; movq mm1,.cbx1q
inc ecx
cmp cx,.y3
jl .loop23
.loop23_done:
mov esp,ebp
ret 34
.call_line:
pushad
push .cz1
push .cz2
push .z_buff
push .t_bmap
push .t_emap
push dword .cey2
push .cex2
push dword .cey1
push .cex1
push dword .cby2
push .cbx2
push dword .cby1
push .cbx1
push ecx
mov eax,.cx1
sar eax,ROUND
mov ebx,.cx2
sar ebx,ROUND
call two_tex_line_z
popad
ret
two_tex_line_z:
;--------------in: eax - x1
;-------------- ebx - x2
;-------------- edi - pointer to screen buffer
;stack - another parameters :
.y equ dword [ebp+4]
.bx1 equ [ebp+8] ; ---
.by1 equ [ebp+12] ; |
.bx2 equ [ebp+16] ; |
.by2 equ [ebp+20] ; |> b. texture and e. texture coords
.ex1 equ [ebp+24] ; |> shifted shl ROUND
.ey1 equ [ebp+28] ; |
.ex2 equ [ebp+32] ; |
.ey2 equ [ebp+36] ; ---
.emap equ [ebp+40] ; b texture offset
.bmap equ [ebp+44] ; e texture offset
.z_buff equ dword [ebp+48]
.z2 equ dword [ebp+52] ; -- |> z coords shifted
.z1 equ dword [ebp+56] ; -- shl CATMULL_SHIFT
.x1 equ dword [ebp-4]
.x2 equ dword [ebp-8]
.dbx equ [ebp-12]
.dex equ [ebp-16]
.dby equ [ebp-20]
.dey equ [ebp-24]
.dz equ dword [ebp-28]
.cbx equ [ebp-32]
.cex equ [ebp-36]
.cby equ [ebp-40]
.cey equ [ebp-44]
.cz equ dword [ebp-48]
.czbuff equ dword [ebp-52]
mov ebp,esp
mov ecx,.y
or ecx,ecx
jl .bl_end
mov dx,word[size_y_var]
dec dx
cmp cx,dx ;word[size_y_var] ;SIZE_Y
jge .bl_end
cmp eax,ebx
jl @f
je .bl_end
xchg eax,ebx
if Ext=NON
mov edx,.bx1
xchg edx,.bx2
mov .bx1,edx
mov edx,.by1
xchg edx,.by2
mov .by1,edx
mov edx,.ex1
xchg edx,.ex2
mov .ex1,edx
mov edx,.ey1
xchg edx,.ey2
mov .ey1,edx
else
movq mm0,.bx1
movq mm1,.ex1
movq mm2,.bx2
movq mm3,.ex2
movq .bx2,mm0
movq .ex2,mm1
movq .bx1,mm2
movq .ex1,mm3
end if
mov edx,.z1
xchg edx,.z2
mov .z1,edx
@@:
push eax ebx ;store x1, x2
mov ebx,.x1
movzx edx,word[size_x_var]
dec edx
cmp ebx,edx
; cmp bx,word[size_x_var] ;SIZE_X
jg .bl_end
cmp .x2,0
jle .bl_end
mov ebx,.x2
sub ebx,.x1
if Ext >= SSE
sub esp,16
cvtsi2ss xmm3,ebx ;rcps
shufps xmm3,xmm3,0
; movq mm0,.bx1q
; movq mm1,.bx2q
; movq mm2,.ex1q
; movq mm3,.ex2q
; psubd mm1,mm0
; psubd mm3,mm2
; cvtpi2ps xmm1,mm1
; movlhps xmm1,xmm1
; cvtpi2ps xmm1,mm3
cvtpi2ps xmm0,.bx1 ;mm0 ; bx1; by1
movlhps xmm0,xmm0
cvtpi2ps xmm0,.ex1 ;mm2 ; ex1; ey1
cvtpi2ps xmm1,.bx2 ;mm1 ; bx2; by2
movlhps xmm1,xmm1
cvtpi2ps xmm1,.ex2 ;mm3 ; ex2; ey2
subps xmm1,xmm0
; hi lo
divps xmm1,xmm3 ; xmm1 -> dby; dbx; dey; dex
shufps xmm1,xmm1,11011000b
cvtps2pi mm0,xmm1 ; mm0 -> 2 delta dwords
movhlps xmm1,xmm1
cvtps2pi mm1,xmm1
movq .dex,mm0 ; hi - lo -> dbx, dex
movq .dey,mm1 ; hi - lo -> dby, dey
else
mov eax,.bx2 ; calc .dbx
sub eax,.bx1
cdq
idiv ebx
push eax
mov eax,.ex2 ; calc .dby
sub eax,.ex1
cdq
idiv ebx
push eax
mov eax,.by2 ; calc .dex
sub eax,.by1
cdq
idiv ebx
push eax
mov eax,.ey2 ; calc .dey
sub eax,.ey1
cdq
idiv ebx
push eax
end if
mov eax,.z2 ; calc .dz
sub eax,.z1
cdq
idiv ebx
push eax
cmp .x1,0 ; set correctly begin variable
jge @f ; CLIPPING ON FUNCTION
; cutting triangle exceedes screen
mov ebx,.x1
neg ebx
imul ebx ; eax = .dz * abs(.x1)
add .z1,eax
mov .x1,0
mov eax,.dbx
imul ebx
add .bx1,eax
mov eax,.dby
imul ebx
add .by1,eax
mov eax,.dex
imul ebx
add .ex1,eax
mov eax,.dey
imul ebx
add .ey1,eax
@@:
movzx eax,word[size_x_var] ;SIZE_X ;word[size_x_var]
mov ebx,.x2
cmp eax,ebx
jg @f
mov .x2,eax
@@:
; movd mm0,eax
; movd mm1,.x2
; pminsw mm0,mm1
; movd .x2,mm0
; cmp .x2,SIZE_X ;eax |
; jl @f |> this dont work idk cause
; mov .x2,SIZE_X ;eax |
@@:
; movzx eax,word[size_x_var] ;calc memory begin in buffers
mov ebx,.y
mul ebx
mov ebx,.x1
add eax,ebx
mov ebx,eax
lea eax,[eax*3]
add edi,eax ; edi - screen
mov esi,.z_buff ; z-buffer filled with dd variables
shl ebx,2
add esi,ebx ; esi - Z buffer
mov ecx,.x2
sub ecx,.x1
; init current variables
push dword .bx1 ;.by1 .ex1 .ey1 .z1 esi
push dword .ex1
push dword .by1
push dword .ey1
push .z1 ; current z shl CATMULL_SHIFT
push esi
if Ext >= MMX
pxor mm0,mm0
movq mm3,.cex ; hi - lo -> cbx; cex
movq mm4,.cey ; hi - lo -> cby; cey
; movq mm5,mm3
; movq mm6,mm4
; psrad mm5,ROUND
; psrad mm6,ROUND
; movq .ceyq,mm5
; movq .cbyq,mm6
mov edx,.czbuff
else
cld
end if
.draw:
; if TEX = SHIFTING ;bump drawing only in shifting mode
if Ext=NON
mov esi,.czbuff ; .czbuff current address in buffer
mov ebx,.cz ; .cz - cur z position
cmp ebx,dword[esi]
else
mov ebx,.cz
cmp ebx,dword[edx]
end if
jge .skip
if Ext=NON
mov eax,.cby
mov esi,.cbx
sar eax,ROUND
sar esi,ROUND
shl eax,TEX_SHIFT ;-
add esi,eax
lea esi,[esi*3] ;- ; esi - current b. texture addres
add esi,.bmap
mov ebx,.cex ;.cex - current env map X
mov eax,.cey ;.cey - current env map y
sar ebx,ROUND
sar eax,ROUND
shl eax,TEX_SHIFT
add ebx,eax
lea ebx,[ebx*3]
add ebx,.emap
else
movq mm5,mm4 ;.cey
psrad mm5,ROUND
pslld mm5,TEX_SHIFT
movq mm6,mm3 ;.cex
psrad mm6,ROUND
paddd mm5,mm6
movq mm6,mm5
paddd mm5,mm5
paddd mm5,mm6
paddd mm5,.emap
movd esi,mm5
psrlq mm5,32
movd ebx,mm5
end if
if Ext>=MMX
movd mm1,[esi]
movd mm2,[ebx]
punpcklbw mm1,mm0
punpcklbw mm2,mm0
pmullw mm1,mm2
psrlw mm1,8
packuswb mm1,mm0
movd [edi],mm1
mov ebx,.cz
mov dword[edx],ebx
else
cld ; esi - tex e.
lodsb ; ebx - tex b.
mov dl,[ebx]
mul dl
shr ax,8
stosb
inc ebx
lodsb
mov dl,[ebx]
mul dl
shr ax,8
stosb
inc ebx
lodsb
mov dl,[ebx]
mul dl
shr ax,8
stosb
mov ebx,.cz
mov esi,.czbuff
mov dword[esi],ebx
jmp .no_skip
end if
.skip:
add edi,3
if Ext = NON
.no_skip:
add .czbuff,4
mov eax,.dbx
add .cbx,eax
mov eax,.dby
add .cby,eax
mov eax,.dex
add .cex,eax
mov eax,.dey
add .cey,eax
else
add edx,4
paddd mm3,.dex
paddd mm4,.dey
; movq mm5,mm3
; movq mm6,mm4
; psrad mm5,ROUND
; psrad mm6,ROUND
; movq .cex,mm3
; movq .cey,mm4
end if
mov eax,.dz
add .cz,eax
if Ext = NON
dec ecx
jnz .draw
else
loop .draw
end if
.bl_end:
mov esp,ebp
ret 56
;Ext = SSE2
;the_zero:
;size_y_var:
;size_x_var: