4404 lines
84 KiB
NASM
4404 lines
84 KiB
NASM
;Copyright (C) 1997-2005 ZSNES Team ( zsKnight, _Demo_, pagefault, Nach )
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;
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;http://www.zsnes.com
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;http://sourceforge.net/projects/zsnes
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;
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;This program is free software; you can redistribute it and/or
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;modify it under the terms of the GNU General Public License
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;as published by the Free Software Foundation; either
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;version 2 of the License, or (at your option) any later
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;version.
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;
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;This program is distributed in the hope that it will be useful,
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;but WITHOUT ANY WARRANTY; without even the implied warranty of
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;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;GNU General Public License for more details.
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;
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;You should have received a copy of the GNU General Public License
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;along with this program; if not, write to the Free Software
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;Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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%include "macros.mac"
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EXTSYM disableeffects,winl1,winl2,winbgdata,winr1,winr2,winspdata,winlogica
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EXTSYM winenabm,winobjen,winlogicb,scrndis,scrnon,bgmode,bgtilesz,winbg1en
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EXTSYM winenabs,bg1objptr,bg1ptr,bg1ptrb,bg1ptrc,bg1ptrd,bg1scrolx,bg1scroly
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EXTSYM cachebg1,curbgofs1,curcolbg1,vcache2b,vcache4b,vcache8b,vcache2ba
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EXTSYM vcache4ba,vcache8ba,vidbuffer,bg3highst,cbitmode,colormodedef
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EXTSYM colormodeofs,drawline16b,forceblnk,newengine8b,preparesprpr,scaddset
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EXTSYM spritetablea,sprleftpr,vidbright,ForceNewGfxOff,curypos,drawmode7
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EXTSYM mode7set,mosaicon,mosaicsz,sprleftpr1,sprleftpr2,sprleftpr3,sprlefttot
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EXTSYM sprprifix,drawmode7extbg,interlval,drawmode7extbg2,sprclprio,sprpriodata
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EXTSYM sprsingle,cachetile2b,cachetile4b,cachetile8b,vram,CacheCheckSkip
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EXTSYM cachetile2b16x16,cachetile4b16x16,cachetile8b16x16,osm2dis,xtravbuf
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EXTSYM bg3ptr,bg3scrolx,bg3scroly,vidmemch4,ofsmcptr,ofsmady,ofsmadx,yposngom
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EXTSYM flipyposngom,ofsmtptr,ofsmmptr,ofsmcyps,bgtxadd,bg1ptrx,bg1ptry
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%include "video/vidmacro.mac"
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;drawspritesprio
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SECTION .bss
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NEWSYM bgcoloradder, resb 1
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NEWSYM res512switch, resb 1
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SECTION .text
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; mov cl,[bshifter]
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;*******************************************************
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; DrawLine Draws the current line
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;*******************************************************
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; use curypos+bg1scroly for y location and bg1scrolx for x location
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; use bg1ptr(b,c,d) for the pointer to the tile number contents
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; use bg1objptr for the pointer to the object tile contents
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%macro decideonmode 0
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cmp bl,2
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je .yes4bit
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cmp bl,1
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je .yes2bit
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mov byte[bshifter],6
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mov edx,[vcache8b]
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jmp .skipbits
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.yes4bit
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mov byte[bshifter],2
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mov edx,[vcache4b]
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shl eax,1
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jmp .skipbits
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.yes2bit
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mov byte[bshifter],0
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shl eax,2
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mov edx,[vcache2b]
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.skipbits
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%endmacro
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%macro procmode7 3
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xor eax,eax
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xor edx,edx
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mov ax,[curypos]
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test byte[mode7set],02h
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jz %%noflip
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mov ax,261
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sub ax,[curypos]
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%%noflip
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mov byte[curmosaicsz],1
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test byte[mosaicon],%3
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jz %%nomos
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mov bl,[mosaicsz]
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cmp bl,0
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je %%nomos
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inc bl
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mov [curmosaicsz],bl
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xor edx,edx
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xor bh,bh
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div bx
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xor edx,edx
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mul bx
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xor edx,edx
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mov dl,[mosaicsz]
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add ax,[MosaicYAdder+edx*2]
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%%nomos
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add ax,%1
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mov dx,%2
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call drawmode7
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%endmacro
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%macro procmode7extbg 3
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xor eax,eax
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xor edx,edx
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mov ax,[curypos]
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test byte[mode7set],02h
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jz %%noflip
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mov ax,261
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sub ax,[curypos]
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%%noflip
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mov byte[curmosaicsz],1
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test byte[mosaicon],%3
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jz %%nomos
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mov bl,[mosaicsz]
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cmp bl,0
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je %%nomos
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inc bl
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mov [curmosaicsz],bl
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xor edx,edx
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xor bh,bh
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div bx
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xor edx,edx
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mul bx
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xor edx,edx
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mov dl,[mosaicsz]
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add ax,[MosaicYAdder+edx*2]
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%%nomos
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add ax,%1
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mov dx,%2
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call drawmode7extbg
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%endmacro
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%macro procmode7extbg2 3
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xor eax,eax
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xor edx,edx
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mov ax,[curypos]
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test byte[mode7set],02h
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jz %%noflip
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mov ax,261
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sub ax,[curypos]
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%%noflip
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mov byte[curmosaicsz],1
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test byte[mosaicon],%3
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jz %%nomos
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mov bl,[mosaicsz]
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cmp bl,0
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je %%nomos
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inc bl
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mov [curmosaicsz],bl
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xor edx,edx
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xor bh,bh
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div bx
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xor edx,edx
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mul bx
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xor edx,edx
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mov dl,[mosaicsz]
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add ax,[MosaicYAdder+edx*2]
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%%nomos
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add ax,%1
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mov dx,%2
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call drawmode7extbg2
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%endmacro
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SECTION .data
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NEWSYM MosaicYAdder, dw 0,0,0,1,0,2,1,0,0,4,2,2,3,1,0,7
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NEWSYM cwinptr, dd winbgdata
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SECTION .bss
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NEWSYM pwinbgenab, resb 1
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NEWSYM pwinbgtype, resd 1
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NEWSYM winonbtype, resb 1
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NEWSYM dualwinbg, resb 1
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NEWSYM pwinspenab, resb 1
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NEWSYM pwinsptype, resd 1
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NEWSYM winonstype, resb 1
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NEWSYM dualwinsp, resb 1
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NEWSYM dwinptrproc, resd 1
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SECTION .text
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; is this macro even used?
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%macro ClearWindowData 0
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mov edi,winbgdata+16
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xor eax,eax
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mov ecx,64
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rep stosd
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%endmacro
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NEWSYM makewindow
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; upon entry, al = win enable bits
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cmp byte[disableeffects],1
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je near .finishwin
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mov bl,al
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and bl,00001010b
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cmp bl,00001010b
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je near makedualwin
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cmp bl,0
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je near .finishwin
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mov byte[winon],1
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mov ebx,[winl1]
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; check if data matches previous sprite data
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cmp al,[pwinspenab]
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jne .skipsprcheck
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cmp ebx,[pwinsptype]
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jne .skipsprcheck
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mov dword[cwinptr],winspdata+16
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mov al,[winonstype]
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mov [winon],al
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ret
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.skipsprcheck
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; check if data matches previous data
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cmp al,[pwinbgenab]
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jne .skipenab
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cmp ebx,[pwinbgtype]
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jne .skipenab2
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mov dword[cwinptr],winbgdata+16
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mov al,[winonbtype]
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mov [winon],al
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ret
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.skipenab
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mov [pwinbgenab],al
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mov ebx,[winl1]
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.skipenab2
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mov [pwinbgtype],ebx
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mov dl,[winl1]
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mov dh,[winr1]
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test al,00000010b
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jnz .win1
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mov dl,[winl2]
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mov dh,[winr2]
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shr al,2
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.win1
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test al,01h
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jnz near .outside
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cmp dl,254
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je .clipped
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cmp dl,dh
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jb .clip
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.clipped
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mov byte[winon],0
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mov byte[winonbtype],0
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ret
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.clip
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mov edi,winbgdata+16
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xor eax,eax
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; start drawing 1's from 0 to left
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cmp dl,0
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je .nextdot2
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.nextdot
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mov byte[edi+eax],0
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inc al
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cmp al,dl
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jb .nextdot ; blah
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.nextdot2
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mov byte[edi+eax],1
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inc al
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cmp al,dh
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jb .nextdot2
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mov byte[edi+eax],1
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cmp dh,255
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je .nextdot4
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; start drawing 1's from right to 255
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.nextdot3
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mov byte[edi+eax],0
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inc al
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jnz .nextdot3
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.nextdot4
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mov byte[winon],1
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mov byte[winonbtype],1
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mov dword[cwinptr],winbgdata+16
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ret
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.outside
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cmp dl,dh
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jb .clip2
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mov byte[winon],0FFh
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mov byte[winonbtype],0FFh
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mov dword[cwinptr],winbgdata+16
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ret
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.clip2
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cmp dl,1
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ja .nooutclip
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cmp dh,254
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jae near .clipped
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.nooutclip
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mov edi,winbgdata+16
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xor eax,eax
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; start drawing 1's from 0 to left
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.nextdoti
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mov byte[edi+eax],1
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inc al
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cmp al,dl
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jb .nextdoti
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.nextdot2i
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mov byte[edi+eax],0
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inc al
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cmp al,dh
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jb .nextdot2i
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mov byte[edi+eax],0
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cmp al,255
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je .nextdot4i
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inc al
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; start drawing 1's from right to 255
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.nextdot3i
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mov byte[edi+eax],1
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inc al
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jnz .nextdot3i
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.nextdot4i
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mov byte[winon],1
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mov byte[winonbtype],1
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mov dword[cwinptr],winbgdata+16
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ret
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.finishwin
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ret
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NEWSYM makedualwin
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mov ecx,ebp
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shl cl,1
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mov dl,[winlogica]
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shr dl,cl
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and dl,03h
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mov cl,dl
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mov byte[winon],1
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mov ebx,[winl1]
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; check if data matches previous sprite data
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cmp cl,[dualwinsp]
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jne .skipsprcheck
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cmp al,[pwinspenab]
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jne .skipsprcheck
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cmp ebx,[pwinsptype]
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jne .skipsprcheck
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mov dword[cwinptr],winspdata+16
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mov al,[winonstype]
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mov [winon],al
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ret
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.skipsprcheck
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; check if data matches previous data
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cmp cl,[dualwinbg]
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jne .skipenab3
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cmp al,[pwinbgenab]
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jne .skipenab
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cmp ebx,[pwinbgtype]
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jne .skipenab2
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mov dword[cwinptr],winbgdata+16
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mov al,[winonbtype]
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mov [winon],al
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ret
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.skipenab3
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mov [dualwinbg],cl
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.skipenab
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mov [pwinbgenab],al
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mov ebx,[winl1]
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.skipenab2
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mov [pwinbgtype],ebx
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mov dword[dwinptrproc],winbgdata+16
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mov dword[cwinptr],winbgdata+16
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mov byte[winon],1
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mov byte[winonbtype],1
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NEWSYM dualstartprocess
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mov dl,[winl1]
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mov dh,[winr1]
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push eax
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push ecx
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test al,01h
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jnz near .outside
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cmp dl,254
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je .clipped
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cmp dl,dh
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jb .clip
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.clipped
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mov edi,[dwinptrproc]
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xor eax,eax
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mov ecx,64
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rep stosd
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jmp .donextwin
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.clip
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mov edi,[dwinptrproc]
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xor eax,eax
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; start drawing 1's from 0 to left
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cmp dl,0
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je .nextdot2
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.nextdot
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mov byte[edi+eax],0
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inc al
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cmp al,dl
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jbe .nextdot
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.nextdot2
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mov byte[edi+eax],1
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inc al
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cmp al,dh
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jb .nextdot2
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mov byte[edi+eax],1
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cmp dh,255
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je .nextdot4
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; start drawing 1's from right to 255
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.nextdot3
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mov byte[edi+eax],0
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inc al
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jnz .nextdot3
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.nextdot4
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jmp .donextwin
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.outside
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cmp dl,dh
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jb .clip2
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mov edi,[dwinptrproc]
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mov eax,01010101h
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mov ecx,64
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rep stosd
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jmp .donextwin
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.clip2
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cmp dl,1
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ja .nooutclip
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cmp dh,254
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jae near .clipped
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.nooutclip
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mov edi,[dwinptrproc]
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xor eax,eax
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; start drawing 1's from 0 to left
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.nextdoti
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mov byte[edi+eax],1
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inc al
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cmp al,dl
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jb .nextdoti
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.nextdot2i
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mov byte[edi+eax],0
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inc al
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cmp al,dh
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jb .nextdot2i
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mov byte[edi+eax],0
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cmp al,255
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je .nextdot4i
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inc al
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; start drawing 1's from right to 255
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.nextdot3i
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mov byte[edi+eax],1
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inc al
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jnz .nextdot3i
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.nextdot4i
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.donextwin
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pop ecx
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pop eax
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cmp cl,0
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je near dualwinor
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cmp cl,2
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je near dualwinxor
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cmp cl,3
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je near dualwinxnor
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NEWSYM dualwinand
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mov dl,[winl2]
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mov dh,[winr2]
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test al,04h
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jnz near .outside
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cmp dl,254
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je .clipped
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cmp dl,dh
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jb .clip
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.clipped
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mov edi,[dwinptrproc]
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xor eax,eax
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mov ecx,64
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rep stosd
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jmp .donextwin
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.clip
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mov edi,[dwinptrproc]
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xor eax,eax
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; start drawing 1's from 0 to left
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cmp dl,0
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je .nextdot2
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.nextdot
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mov byte[edi+eax],0
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inc al
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cmp al,dl
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jbe .nextdot
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.nextdot2
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and byte[edi+eax],1
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inc al
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cmp al,dh
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jb .nextdot2
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and byte[edi+eax],1
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cmp dh,255
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je .nextdot4
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; start drawing 1's from right to 255
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.nextdot3
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mov byte[edi+eax],0
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inc al
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jnz .nextdot3
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.nextdot4
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jmp .donextwin
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.outside
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cmp dl,dh
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jb .clip2
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jmp .donextwin
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.clip2
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cmp dl,1
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ja .nooutclip
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cmp dh,254
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jae near .clipped
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.nooutclip
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mov edi,[dwinptrproc]
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xor eax,eax
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; start drawing 1's from 0 to left
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.nextdoti
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and byte[edi+eax],1
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inc al
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cmp al,dl
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jb .nextdoti
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.nextdot2i
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mov byte[edi+eax],0
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inc al
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cmp al,dh
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jb .nextdot2i
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mov byte[edi+eax],0
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cmp al,255
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je .nextdot4i
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inc al
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; start drawing 1's from right to 255
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.nextdot3i
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and byte[edi+eax],1
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inc al
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jnz .nextdot3i
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.nextdot4i
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.donextwin
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ret
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NEWSYM dualwinor
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mov dl,[winl2]
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mov dh,[winr2]
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test al,04h
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jnz near .outside
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cmp dl,254
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je .clipped
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cmp dl,dh
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jb .clip
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.clipped
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jmp .donextwin
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.clip
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mov edi,[dwinptrproc]
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xor eax,eax
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; start drawing 1's from 0 to left
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cmp dl,0
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je .nextdot2
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mov al,dl
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inc al
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.nextdot2
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mov byte[edi+eax],1
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inc al
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cmp al,dh
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jb .nextdot2
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mov byte[edi+eax],1
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jmp .donextwin
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.outside
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cmp dl,dh
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jb .clip2
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mov edi,[dwinptrproc]
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mov eax,01010101h
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mov ecx,64
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rep stosd
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jmp .donextwin
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.clip2
|
|
cmp dl,1
|
|
ja .nooutclip
|
|
cmp dh,254
|
|
jae near .clipped
|
|
.nooutclip
|
|
mov edi,[dwinptrproc]
|
|
xor eax,eax
|
|
; start drawing 1's from 0 to left
|
|
.nextdoti
|
|
mov byte[edi+eax],1
|
|
inc al
|
|
cmp al,dl
|
|
jb .nextdoti
|
|
mov al,dh
|
|
cmp al,255
|
|
je .nextdot4i
|
|
inc al
|
|
; start drawing 1's from right to 255
|
|
.nextdot3i
|
|
mov byte[edi+eax],1
|
|
inc al
|
|
jnz .nextdot3i
|
|
.nextdot4i
|
|
.donextwin
|
|
ret
|
|
|
|
NEWSYM dualwinxor
|
|
mov dl,[winl2]
|
|
mov dh,[winr2]
|
|
test al,04h
|
|
jnz near .outside
|
|
cmp dl,254
|
|
je .clipped
|
|
cmp dl,dh
|
|
jb .clip
|
|
.clipped
|
|
jmp .donextwin
|
|
.clip
|
|
mov edi,[dwinptrproc]
|
|
xor eax,eax
|
|
; start drawing 1's from 0 to left
|
|
cmp dl,0
|
|
je .nextdot2
|
|
mov al,dl
|
|
inc al
|
|
.nextdot2
|
|
xor byte[edi+eax],1
|
|
inc al
|
|
cmp al,dh
|
|
jb .nextdot2
|
|
xor byte[edi+eax],1
|
|
jmp .donextwin
|
|
.outside
|
|
cmp dl,dh
|
|
jb .clip2
|
|
mov edi,[dwinptrproc]
|
|
mov ecx,64
|
|
.loopxor
|
|
xor dword[edi],01010101h
|
|
add edi,4
|
|
dec ecx
|
|
jnz .loopxor
|
|
jmp .donextwin
|
|
.clip2
|
|
cmp dl,1
|
|
ja .nooutclip
|
|
cmp dh,254
|
|
jae near .clipped
|
|
.nooutclip
|
|
mov edi,[dwinptrproc]
|
|
xor eax,eax
|
|
; start drawing 1's from 0 to left
|
|
.nextdoti
|
|
xor byte[edi+eax],1
|
|
inc al
|
|
cmp al,dl
|
|
jb .nextdoti
|
|
mov al,dh
|
|
cmp al,255
|
|
je .nextdot4i
|
|
inc al
|
|
; start drawing 1's from right to 255
|
|
.nextdot3i
|
|
xor byte[edi+eax],1
|
|
inc al
|
|
jnz .nextdot3i
|
|
.nextdot4i
|
|
.donextwin
|
|
ret
|
|
|
|
NEWSYM dualwinxnor
|
|
mov dl,[winl2]
|
|
mov dh,[winr2]
|
|
test al,04h
|
|
jnz near .outside
|
|
cmp dl,254
|
|
je .clipped
|
|
cmp dl,dh
|
|
jb .clip
|
|
.clipped
|
|
jmp .donextwin
|
|
.clip
|
|
mov edi,[dwinptrproc]
|
|
xor eax,eax
|
|
; start drawing 1's from 0 to left
|
|
cmp dl,0
|
|
je .nextdot2
|
|
mov al,dl
|
|
inc al
|
|
.nextdot2
|
|
xor byte[edi+eax],1
|
|
inc al
|
|
cmp al,dh
|
|
jb .nextdot2
|
|
xor byte[edi+eax],1
|
|
jmp .donextwin
|
|
.outside
|
|
cmp dl,dh
|
|
jb .clip2
|
|
mov edi,[dwinptrproc]
|
|
mov ecx,64
|
|
.loopxor
|
|
xor dword[edi],01010101h
|
|
add edi,4
|
|
dec ecx
|
|
jnz .loopxor
|
|
jmp .donextwin
|
|
.clip2
|
|
cmp dl,1
|
|
ja .nooutclip
|
|
cmp dh,254
|
|
jae near .clipped
|
|
.nooutclip
|
|
mov edi,[dwinptrproc]
|
|
xor eax,eax
|
|
; start drawing 1's from 0 to left
|
|
.nextdoti
|
|
xor byte[edi+eax],1
|
|
inc al
|
|
cmp al,dl
|
|
jb .nextdoti
|
|
mov al,dh
|
|
cmp al,255
|
|
je .nextdot4i
|
|
inc al
|
|
; start drawing 1's from right to 255
|
|
.nextdot3i
|
|
xor byte[edi+eax],1
|
|
inc al
|
|
jnz .nextdot3i
|
|
.nextdot4i
|
|
.donextwin
|
|
mov edi,[dwinptrproc]
|
|
mov ecx,64
|
|
.loopxor2
|
|
xor dword[edi],01010101h
|
|
add edi,4
|
|
dec ecx
|
|
jnz .loopxor2
|
|
ret
|
|
|
|
SECTION .bss
|
|
NEWSYM winonsp, resb 1
|
|
SECTION .text
|
|
|
|
NEWSYM makewindowsp
|
|
mov al,[winobjen]
|
|
mov byte[winonsp],0
|
|
test dword[winenabm],1010h
|
|
jz near .finishwin
|
|
; upon entry, al = win enable bits
|
|
cmp byte[disableeffects],1
|
|
je near .finishwin
|
|
mov bl,al
|
|
and bl,00001010b
|
|
cmp bl,00001010b
|
|
je near makedualwinsp
|
|
cmp bl,0
|
|
je near .finishwin
|
|
mov byte[winonsp],1
|
|
; check if data matches previous data
|
|
cmp al,[pwinspenab]
|
|
jne .skipenab
|
|
mov ebx,[winl1]
|
|
cmp ebx,[pwinsptype]
|
|
jne .skipenab2
|
|
mov dword[cwinptr],winspdata+16
|
|
mov al,[winonstype]
|
|
mov [winonsp],al
|
|
ret
|
|
.skipenab
|
|
mov [pwinspenab],al
|
|
mov ebx,[winl1]
|
|
.skipenab2
|
|
mov [pwinsptype],ebx
|
|
mov dl,[winl1]
|
|
mov dh,[winr1]
|
|
test al,00000010b
|
|
jnz .win1
|
|
mov dl,[winl2]
|
|
mov dh,[winr2]
|
|
shr al,2
|
|
.win1
|
|
test al,01h
|
|
jnz near .outside
|
|
cmp dl,254
|
|
je .clipped
|
|
cmp dl,dh
|
|
jb .clip
|
|
.clipped
|
|
mov byte[winonsp],0
|
|
mov byte[winonstype],0
|
|
ret
|
|
.clip
|
|
mov edi,winspdata+16
|
|
xor eax,eax
|
|
; start drawing 1's from 0 to left
|
|
cmp dl,0
|
|
je .nextdot2
|
|
.nextdot
|
|
mov byte[edi+eax],0
|
|
inc al
|
|
cmp al,dl
|
|
jbe .nextdot
|
|
.nextdot2
|
|
mov byte[edi+eax],1
|
|
inc al
|
|
cmp al,dh
|
|
jb .nextdot2
|
|
mov byte[edi+eax],1
|
|
cmp dh,255
|
|
je .nextdot4
|
|
; start drawing 1's from right to 255
|
|
.nextdot3
|
|
mov byte[edi+eax],0
|
|
inc al
|
|
jnz .nextdot3
|
|
.nextdot4
|
|
mov byte[winonsp],1
|
|
mov byte[winonstype],1
|
|
mov dword[cwinptr],winspdata+16
|
|
ret
|
|
.outside
|
|
cmp dl,dh
|
|
jb .clip2
|
|
mov byte[winonsp],0FFh
|
|
mov byte[winonstype],0FFh
|
|
mov dword[cwinptr],winspdata+16
|
|
ret
|
|
.clip2
|
|
cmp dl,1
|
|
ja .nooutclip
|
|
cmp dh,254
|
|
jae near .clipped
|
|
.nooutclip
|
|
mov edi,winspdata+16
|
|
xor eax,eax
|
|
; start drawing 1's from 0 to left
|
|
.nextdoti
|
|
mov byte[edi+eax],1
|
|
inc al
|
|
cmp al,dl
|
|
jb .nextdoti
|
|
.nextdot2i
|
|
mov byte[edi+eax],0
|
|
inc al
|
|
cmp al,dh
|
|
jb .nextdot2i
|
|
mov byte[edi+eax],0
|
|
cmp al,255
|
|
je .nextdot4i
|
|
inc al
|
|
; start drawing 1's from right to 255
|
|
.nextdot3i
|
|
mov byte[edi+eax],1
|
|
inc al
|
|
jnz .nextdot3i
|
|
.nextdot4i
|
|
mov byte[winonsp],1
|
|
mov byte[winonstype],1
|
|
mov dword[cwinptr],winspdata+16
|
|
ret
|
|
.finishwin
|
|
ret
|
|
|
|
NEWSYM makedualwinsp
|
|
mov ecx,ebp
|
|
shl cl,1
|
|
mov dl,[winlogicb]
|
|
and dl,03h
|
|
mov cl,dl
|
|
mov byte[winonsp],1
|
|
; check if data matches previous data
|
|
cmp cl,[dualwinsp]
|
|
jne .skipenab3
|
|
cmp al,[pwinspenab]
|
|
jne .skipenab
|
|
mov ebx,[winl1]
|
|
cmp ebx,[pwinsptype]
|
|
jne .skipenab2
|
|
mov dword[cwinptr],winspdata+16
|
|
mov al,[winonstype]
|
|
mov [winonsp],al
|
|
ret
|
|
.skipenab3
|
|
mov [dualwinsp],cl
|
|
.skipenab
|
|
mov [pwinspenab],al
|
|
mov ebx,[winl1]
|
|
.skipenab2
|
|
mov [pwinsptype],ebx
|
|
mov dword[dwinptrproc],winspdata+16
|
|
mov dword[cwinptr],winspdata+16
|
|
mov byte[winonsp],1
|
|
mov byte[winonstype],1
|
|
jmp dualstartprocess
|
|
|
|
; window logic data
|
|
SECTION .bss
|
|
NEWSYM windowdata, resb 16
|
|
NEWSYM numwin, resb 1
|
|
NEWSYM multiwin, resb 1
|
|
NEWSYM multiclip, resb 1
|
|
NEWSYM multitype, resb 1
|
|
SECTION .text
|
|
|
|
; jmp .finishwin
|
|
%macro procwindow 1
|
|
cmp byte[disableeffects],1
|
|
je near .finishwin
|
|
mov al,%1
|
|
test al,00001010b
|
|
jz near .finishwin
|
|
mov esi,windowdata
|
|
mov bl,al
|
|
mov byte[winon],1
|
|
and bl,00001010b
|
|
and al,00000101b
|
|
mov byte[numwin],0
|
|
cmp bl,00001010b
|
|
je near .multiwin
|
|
mov byte[multiwin],0
|
|
test bl,00000010b
|
|
jnz .win1
|
|
mov cl,[winl2]
|
|
mov ch,[winr2]
|
|
shr al,2
|
|
jmp .okaywin
|
|
.win1
|
|
mov cl,[winl1]
|
|
mov ch,[winr1]
|
|
and al,01h
|
|
.okaywin
|
|
cmp ch,255
|
|
je .noinc
|
|
inc ch
|
|
.noinc
|
|
test al,01h
|
|
jnz .wininside
|
|
cmp cl,ch
|
|
jae .noinsidemask
|
|
mov [esi],cl
|
|
mov byte[esi+1],01h
|
|
mov [esi+2],ch
|
|
mov byte[esi+3],0FFh
|
|
mov byte[numwin],2
|
|
jmp .finishwin
|
|
.noinsidemask
|
|
mov byte[winon],0
|
|
jmp .finishwin
|
|
.wininside
|
|
cmp cl,ch
|
|
ja .nooutsidemask
|
|
.nonotoutside
|
|
cmp ch,254
|
|
jb .skipnodraw
|
|
cmp cl,1
|
|
jbe .noinsidemask
|
|
.skipnodraw
|
|
mov byte[esi],0
|
|
mov byte[esi+1],01h
|
|
mov byte[esi+2],cl
|
|
mov byte[esi+3],0FFh
|
|
mov byte[esi+4],ch
|
|
mov byte[esi+5],01h
|
|
mov byte[numwin],3
|
|
jmp .finishwin
|
|
.nooutsidemask
|
|
mov byte[esi],0
|
|
mov byte[esi+1],01h
|
|
mov byte[numwin],1
|
|
jmp .finishwin
|
|
; **************
|
|
; *Multiwindows*
|
|
; **************
|
|
.multiwin
|
|
mov byte[winon],0
|
|
mov byte[multiwin],0
|
|
mov byte[multiclip],al
|
|
mov al,[winlogica]
|
|
mov ecx,ebp
|
|
shl ecx,1
|
|
shr al,cl
|
|
and al,3h
|
|
mov byte[multitype],al
|
|
mov cl,[winl1]
|
|
mov ch,[winr1]
|
|
mov esi,windowdata
|
|
cmp ch,255
|
|
je .noinc2
|
|
inc ch
|
|
.noinc2
|
|
test byte[multiclip],01h
|
|
jnz .wininside2
|
|
cmp cl,ch
|
|
jae .nowina
|
|
mov [esi],cl
|
|
mov byte[esi+1],01h
|
|
mov [esi+2],ch
|
|
mov byte[esi+3],0FFh
|
|
add esi,4
|
|
mov byte[numwin],2
|
|
jmp .secondwin
|
|
.nowina
|
|
mov cl,[winl2]
|
|
mov ch,[winr2]
|
|
mov al,[multiclip]
|
|
shr al,2
|
|
jmp .okaywin
|
|
.wininside2
|
|
cmp cl,ch
|
|
ja .nooutsidemask2
|
|
cmp ch,254
|
|
jb .skipnodraw2
|
|
cmp cl,1
|
|
jbe .nooutsidemask2
|
|
.skipnodraw2
|
|
mov byte[esi],0
|
|
mov byte[esi+1],01h
|
|
mov byte[esi+2],cl
|
|
mov byte[esi+3],0FFh
|
|
mov byte[esi+4],ch
|
|
mov byte[esi+5],01h
|
|
mov byte[numwin],3
|
|
jmp .secondwin
|
|
.nooutsidemask2
|
|
mov byte[esi],0
|
|
mov byte[esi+1],01h
|
|
mov byte[numwin],1
|
|
.secondwin
|
|
mov byte[multiwin],1
|
|
mov byte[winon],1
|
|
.finishwin
|
|
%endmacro
|
|
|
|
NEWSYM procspritessub
|
|
test byte[scrndis],10h
|
|
jnz .nosprites
|
|
test byte[scrnon+1],10h
|
|
jz .nosprites
|
|
test byte[scrnon],10h
|
|
jnz .nosprites
|
|
cmp byte[winonsp],0FFh
|
|
je .nosprites
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
add ebx,[cursprloc]
|
|
mov cl,[ebx]
|
|
cmp byte[sprprifix],0
|
|
jne .sprprio
|
|
add dword[cursprloc],256
|
|
.sprprio
|
|
or cl,cl
|
|
jz .nosprites
|
|
call drawsprites
|
|
.nosprites
|
|
ret
|
|
|
|
NEWSYM procspritesmain
|
|
test byte[scrndis],10h
|
|
jnz .nosprites
|
|
test byte[scrnon],10h
|
|
jz .nosprites
|
|
cmp byte[winonsp],0FFh
|
|
je .nosprites
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
add ebx,[cursprloc]
|
|
mov cl,[ebx]
|
|
cmp byte[sprprifix],0
|
|
jne .sprprio
|
|
add dword[cursprloc],256
|
|
.sprprio
|
|
or cl,cl
|
|
jz .nosprites
|
|
call drawsprites
|
|
.nosprites
|
|
ret
|
|
|
|
SECTION .bss
|
|
NEWSYM curbgnum, resb 1
|
|
SECTION .text
|
|
|
|
NEWSYM drawbackgrndsub
|
|
mov esi,[colormodeofs]
|
|
mov bl,[esi+ebp]
|
|
cmp bl,0
|
|
je near .noback
|
|
mov al,[curbgnum]
|
|
test byte[scrnon+1],al
|
|
jz near .noback
|
|
test byte[scrnon],al
|
|
jnz near .noback
|
|
test byte[alreadydrawn],al
|
|
jnz near .noback
|
|
test byte[scrndis],al
|
|
jnz near .noback
|
|
mov byte[winon],0
|
|
test byte[winenabs],al
|
|
jz near .nobackwin
|
|
; procwindow [winbg1en+ebp]
|
|
mov al,[winbg1en+ebp]
|
|
call makewindow
|
|
cmp byte[winon],0FFh
|
|
je near .noback
|
|
.nobackwin
|
|
mov bl,[curbgnum]
|
|
mov byte[curmosaicsz],1
|
|
test byte[mosaicon],bl
|
|
jz .nomos
|
|
mov bl,[mosaicsz]
|
|
cmp bl,0
|
|
je .nomos
|
|
inc bl
|
|
mov [curmosaicsz],bl
|
|
.nomos
|
|
mov byte[bgcoloradder],0
|
|
cmp byte[bgmode],0
|
|
jne .nomode0
|
|
mov eax,ebp
|
|
shl eax,5
|
|
mov byte[bgcoloradder],al
|
|
.nomode0
|
|
mov esi,[bg1vbufloc+ebp*4]
|
|
mov edi,[bg1tdatloc+ebp*4]
|
|
mov edx,[bg1tdabloc+ebp*4]
|
|
mov ebx,[bg1cachloc+ebp*4]
|
|
mov eax,[bg1xposloc+ebp*4]
|
|
mov cl,[curbgnum]
|
|
test byte[bgtilesz],cl
|
|
jnz .16x16
|
|
mov ecx,[bg1yaddval+ebp*4]
|
|
call draw8x8
|
|
cmp byte[drawn],33
|
|
jne .notalldrawn
|
|
mov al,[curbgnum]
|
|
or [alreadydrawn],al
|
|
.notalldrawn
|
|
jmp .noback
|
|
.16x16
|
|
mov ecx,[bg1yaddval+ebp*4]
|
|
call draw16x16
|
|
cmp byte[drawn],33
|
|
jne .notalldrawnb
|
|
mov al,[curbgnum]
|
|
or [alreadydrawn],al
|
|
.notalldrawnb
|
|
.noback
|
|
ret
|
|
|
|
NEWSYM drawbackgrndmain
|
|
mov esi,[colormodeofs]
|
|
mov bl,[esi+ebp]
|
|
cmp bl,0
|
|
je near .noback
|
|
mov al,[curbgnum]
|
|
test byte[scrnon],al
|
|
jz near .noback
|
|
test byte[alreadydrawn],al
|
|
jnz near .noback
|
|
test byte[scrndis],al
|
|
jnz near .noback
|
|
mov byte[winon],0
|
|
test byte[winenabm],al
|
|
jz near .nobackwin
|
|
; procwindow [winbg1en+ebp]
|
|
mov al,[winbg1en+ebp]
|
|
call makewindow
|
|
cmp byte[winon],0FFh
|
|
je near .noback
|
|
.nobackwin
|
|
mov bl,[curbgnum]
|
|
mov byte[curmosaicsz],1
|
|
test byte[mosaicon],bl
|
|
jz .nomos
|
|
mov bl,[mosaicsz]
|
|
cmp bl,0
|
|
je .nomos
|
|
inc bl
|
|
mov [curmosaicsz],bl
|
|
.nomos
|
|
mov byte[bgcoloradder],0
|
|
cmp byte[bgmode],0
|
|
jne .nomode0
|
|
mov eax,ebp
|
|
shl eax,5
|
|
mov byte[bgcoloradder],al
|
|
.nomode0
|
|
mov esi,[bg1vbufloc+ebp*4]
|
|
mov edi,[bg1tdatloc+ebp*4]
|
|
mov edx,[bg1tdabloc+ebp*4]
|
|
mov ebx,[bg1cachloc+ebp*4]
|
|
mov eax,[bg1xposloc+ebp*4]
|
|
mov cl,[curbgnum]
|
|
test byte[bgtilesz],cl
|
|
jnz .16x16
|
|
mov ecx,[bg1yaddval+ebp*4]
|
|
call draw8x8
|
|
cmp byte[drawn],33
|
|
jne .notalldrawn
|
|
mov al,[curbgnum]
|
|
or [alreadydrawn],al
|
|
.notalldrawn
|
|
jmp .noback
|
|
.16x16
|
|
mov ecx,[bg1yaddval+ebp*4]
|
|
call draw16x16
|
|
cmp byte[drawn],33
|
|
jne .notalldrawnb
|
|
mov al,[curbgnum]
|
|
or [alreadydrawn],al
|
|
.notalldrawnb
|
|
.noback
|
|
ret
|
|
|
|
NEWSYM procbackgrnd
|
|
mov esi,[colormodeofs]
|
|
mov bl,[esi+ebp]
|
|
cmp bl,0
|
|
je near .noback
|
|
mov al,[curbgnum]
|
|
mov ah,al
|
|
test byte[scrndis],al
|
|
jnz near .noback
|
|
test [scrnon],ax
|
|
jz near .noback
|
|
push ebp
|
|
shl ebp,6
|
|
mov edi,cachebg1
|
|
add edi,ebp
|
|
pop ebp
|
|
cmp bl,[curcolbg1+ebp]
|
|
je .skipclearcache
|
|
mov [curcolbg1+ebp],bl
|
|
mov ax,[bg1ptr+ebp*2]
|
|
mov [curbgofs1+ebp*2],ax
|
|
call fillwithnothing
|
|
.skipclearcache
|
|
xor eax,eax
|
|
mov [curcolor],bl
|
|
mov ax,[bg1objptr+ebp*2]
|
|
decideonmode
|
|
add edx,eax
|
|
xor eax,eax
|
|
mov [tempcach],edx
|
|
xor edx,edx
|
|
mov ax,[bg1objptr+ebp*2]
|
|
mov [curtileptr],ax
|
|
mov ax,[bg1ptr+ebp*2]
|
|
mov [bgptr],ax
|
|
cmp ax,[curbgofs1+ebp*2]
|
|
je .skipclearcacheb
|
|
mov [curbgofs1+ebp*2],ax
|
|
call fillwithnothing
|
|
.skipclearcacheb
|
|
mov ax,[bg1ptrb+ebp*2]
|
|
mov [bgptrb],ax
|
|
mov ax,[bg1ptrc+ebp*2]
|
|
mov [bgptrc],ax
|
|
mov ax,[bg1ptrd+ebp*2]
|
|
mov [bgptrd],ax
|
|
mov bl,[curbgnum]
|
|
mov ax,[curypos]
|
|
|
|
mov byte[curmosaicsz],1
|
|
test byte[mosaicon],bl
|
|
jz .nomos
|
|
mov bl,[mosaicsz]
|
|
cmp bl,0
|
|
je .nomos
|
|
inc bl
|
|
mov [curmosaicsz],bl
|
|
xor edx,edx
|
|
xor bh,bh
|
|
div bx
|
|
xor edx,edx
|
|
mul bx
|
|
xor edx,edx
|
|
mov dl,[mosaicsz]
|
|
add ax,[MosaicYAdder+edx*2]
|
|
.nomos
|
|
|
|
add ax,[bg1scroly+ebp*2]
|
|
mov dx,[bg1scrolx+ebp*2]
|
|
mov cl,[curbgnum]
|
|
test byte[bgtilesz],cl
|
|
jnz .16x16
|
|
call proc8x8
|
|
mov [bg1vbufloc+ebp*4],esi
|
|
mov [bg1tdatloc+ebp*4],edi
|
|
mov [bg1tdabloc+ebp*4],edx
|
|
mov [bg1cachloc+ebp*4],ebx
|
|
mov [bg1yaddval+ebp*4],ecx
|
|
mov [bg1xposloc+ebp*4],eax
|
|
ret
|
|
.16x16
|
|
call proc16x16
|
|
mov [bg1vbufloc+ebp*4],esi
|
|
mov [bg1tdatloc+ebp*4],edi
|
|
mov [bg1tdabloc+ebp*4],edx
|
|
mov [bg1cachloc+ebp*4],ebx
|
|
mov [bg1yaddval+ebp*4],ecx
|
|
mov [bg1xposloc+ebp*4],eax
|
|
.noback
|
|
ret
|
|
|
|
SECTION .bss
|
|
NEWSYM nextprimode, resb 1
|
|
NEWSYM cursprloc, resd 1
|
|
NEWSYM curcolor, resb 1
|
|
NEWSYM curtileptr, resw 1
|
|
; esi = pointer to video buffer
|
|
; edi = pointer to tile data
|
|
; ebx = cached memory
|
|
; al = current x position
|
|
NEWSYM bg1vbufloc, resd 1
|
|
NEWSYM bg2vbufloc, resd 1
|
|
NEWSYM bg3vbufloc, resd 1
|
|
NEWSYM bg4vbufloc, resd 1
|
|
NEWSYM bg1tdatloc, resd 1
|
|
NEWSYM bg2tdatloc, resd 1
|
|
NEWSYM bg3tdatloc, resd 1
|
|
NEWSYM bg4tdatloc, resd 1
|
|
NEWSYM bg1tdabloc, resd 1
|
|
NEWSYM bg2tdabloc, resd 1
|
|
NEWSYM bg3tdabloc, resd 1
|
|
NEWSYM bg4tdabloc, resd 1
|
|
NEWSYM bg1cachloc, resd 1
|
|
NEWSYM bg2cachloc, resd 1
|
|
NEWSYM bg3cachloc, resd 1
|
|
NEWSYM bg4cachloc, resd 1
|
|
NEWSYM bg1yaddval, resd 1
|
|
NEWSYM bg2yaddval, resd 1
|
|
NEWSYM bg3yaddval, resd 1
|
|
NEWSYM bg4yaddval, resd 1
|
|
NEWSYM bg1xposloc, resd 1
|
|
NEWSYM bg2xposloc, resd 1
|
|
NEWSYM bg3xposloc, resd 1
|
|
NEWSYM bg4xposloc, resd 1
|
|
NEWSYM alreadydrawn, resb 1
|
|
SECTION .text
|
|
|
|
NEWSYM fillwithnothing
|
|
push edi
|
|
xor eax,eax
|
|
mov ecx,16
|
|
.loop
|
|
mov [edi],eax
|
|
add edi,4
|
|
dec ecx
|
|
jnz .loop
|
|
pop edi
|
|
ret
|
|
|
|
SECTION .bss
|
|
NEWSYM bg3draw, resb 1
|
|
NEWSYM maxbr, resb 1
|
|
SECTION .text
|
|
|
|
NEWSYM blanker
|
|
; calculate current video offset
|
|
push ebx
|
|
push esi
|
|
xor ebx,ebx
|
|
mov bx,[curypos]
|
|
mov esi,ebx
|
|
shl esi,8
|
|
shl ebx,5
|
|
add esi,ebx
|
|
add esi,16
|
|
add esi,[vidbuffer]
|
|
mov bl,64
|
|
.next
|
|
mov dword[esi],0
|
|
add esi,4
|
|
dec bl
|
|
jnz .next
|
|
pop esi
|
|
pop ebx
|
|
ret
|
|
|
|
ALIGN32
|
|
SECTION .bss
|
|
NEWSYM bg3high2, resd 1
|
|
NEWSYM newengen, resd 1
|
|
NEWSYM cwinenabm, resd 1
|
|
SECTION .text
|
|
|
|
NEWSYM drawline
|
|
mov al,[winenabs]
|
|
mov [cwinenabm],al
|
|
|
|
mov byte[bg3high2],0
|
|
cmp byte[bgmode],1
|
|
jne .nohigh
|
|
mov al,[bg3highst]
|
|
mov [bg3high2],al
|
|
.nohigh
|
|
cmp byte[cbitmode],1
|
|
je near drawline16b
|
|
mov al,[vidbright]
|
|
cmp al,[maxbr]
|
|
jbe .nochange
|
|
mov [maxbr],al
|
|
.nochange
|
|
cmp byte[ForceNewGfxOff],0
|
|
jne .nonewgfx
|
|
cmp byte[newengen],1
|
|
je near newengine8b
|
|
.nonewgfx
|
|
cmp byte[forceblnk],0
|
|
jne near blanker
|
|
mov byte[alreadydrawn],0
|
|
; cmp byte[curypos],70
|
|
; jne .no
|
|
; push ebx
|
|
; mov bl,[winlogica]
|
|
; mov [bg1sx],bl
|
|
; pop ebx
|
|
;.no
|
|
push ebx
|
|
xor ebx,ebx
|
|
mov bl,[bgmode]
|
|
shl bl,2
|
|
add ebx,colormodedef
|
|
mov [colormodeofs],ebx
|
|
pop ebx
|
|
|
|
cmp byte[bgmode],7
|
|
je near processmode7
|
|
|
|
mov al,[scrnon]
|
|
test [scrnon+1],al
|
|
jz .nomainsub
|
|
test byte[scrnon],10h
|
|
jnz .nomainsub
|
|
test byte[scrnon+1],10h
|
|
jz .nomainsub
|
|
mov al,[scrnon+1]
|
|
xor al,0FFh
|
|
and [scrnon],al
|
|
.nomainsub
|
|
|
|
push esi
|
|
push edi
|
|
push ebx
|
|
push edx
|
|
push ebp
|
|
; calculate current video offset
|
|
xor ebx,ebx
|
|
mov bx,[curypos]
|
|
mov esi,ebx
|
|
shl esi,8
|
|
shl ebx,5
|
|
add esi,ebx
|
|
add esi,16
|
|
add esi,[vidbuffer]
|
|
mov [curvidoffset],esi
|
|
; clear video buffer
|
|
mov edi,esi
|
|
mov ecx,64
|
|
xor eax,eax
|
|
rep stosd
|
|
; do sprite windowing
|
|
call makewindowsp
|
|
; get current sprite table
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
shl ebx,9
|
|
add ebx,[spritetablea]
|
|
mov [currentobjptr],ebx
|
|
mov dword[cursprloc],sprleftpr
|
|
; setup priorities
|
|
cmp byte[sprprifix],0
|
|
je .nosprprio
|
|
mov dword[cursprloc],sprlefttot
|
|
call preparesprpr
|
|
.nosprprio
|
|
; clear registers
|
|
xor eax,eax
|
|
xor ecx,ecx
|
|
; process backgrounds
|
|
; do background 2
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call procbackgrnd
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call procbackgrnd
|
|
; do background 4
|
|
mov byte[curbgnum],08h
|
|
mov ebp,03h
|
|
call procbackgrnd
|
|
; do background 3
|
|
mov byte[curbgnum],04h
|
|
mov ebp,02h
|
|
call procbackgrnd
|
|
|
|
cmp byte[bgmode],1
|
|
ja near priority2
|
|
test byte[scaddset],02h
|
|
jz near .nosubsc
|
|
; draw backgrounds
|
|
mov byte[curbgpr],0h
|
|
; do background 4
|
|
mov byte[curbgnum],08h
|
|
mov ebp,03h
|
|
call drawbackgrndsub
|
|
; do background 3
|
|
mov byte[curbgnum],04h
|
|
mov ebp,02h
|
|
call drawbackgrndsub
|
|
mov ebp,0
|
|
call procspritessub
|
|
mov byte[curbgpr],20h
|
|
; do background 4
|
|
mov byte[curbgnum],08h
|
|
mov ebp,03h
|
|
call drawbackgrndsub
|
|
; do background 3
|
|
cmp byte[bg3high2],1
|
|
je .bg3nothigh
|
|
mov byte[curbgnum],04h
|
|
mov ebp,02h
|
|
call drawbackgrndsub
|
|
.bg3nothigh
|
|
mov ebp,1
|
|
call procspritessub
|
|
; do background 2
|
|
mov byte[curbgpr],0h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndsub
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndsub
|
|
mov ebp,2
|
|
call procspritessub
|
|
; do background 2
|
|
mov byte[curbgpr],20h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndsub
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndsub
|
|
mov ebp,3
|
|
call procspritessub
|
|
cmp byte[bg3high2],1
|
|
jne .bg3high
|
|
; do background 3
|
|
mov byte[curbgpr],20h
|
|
mov byte[curbgnum],04h
|
|
mov ebp,02h
|
|
call drawbackgrndsub
|
|
.bg3high
|
|
|
|
.nosubsc
|
|
mov al,[winenabm]
|
|
mov [cwinenabm],al
|
|
mov byte[curbgpr],0h
|
|
|
|
; do background 4
|
|
mov byte[curbgnum],08h
|
|
mov ebp,03h
|
|
call drawbackgrndmain
|
|
; do background 3
|
|
mov byte[curbgnum],04h
|
|
mov ebp,02h
|
|
call drawbackgrndmain
|
|
mov ebp,0
|
|
call procspritesmain
|
|
mov byte[curbgpr],20h
|
|
; do background 4
|
|
mov byte[curbgnum],08h
|
|
mov ebp,03h
|
|
call drawbackgrndmain
|
|
; do background 3
|
|
cmp byte[bg3high2],1
|
|
je .bg3nothighb
|
|
mov byte[curbgnum],04h
|
|
mov ebp,02h
|
|
call drawbackgrndmain
|
|
.bg3nothighb
|
|
mov ebp,1
|
|
call procspritesmain
|
|
; do background 2
|
|
mov byte[curbgpr],0h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndmain
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndmain
|
|
mov ebp,2
|
|
call procspritesmain
|
|
; do background 2
|
|
mov byte[curbgpr],20h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndmain
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndmain
|
|
mov ebp,3
|
|
call procspritesmain
|
|
cmp byte[bg3high2],1
|
|
jne .bg3highb
|
|
; do background 3
|
|
mov byte[curbgpr],20h
|
|
mov byte[curbgnum],04h
|
|
mov ebp,02h
|
|
call drawbackgrndmain
|
|
.bg3highb
|
|
pop ebp
|
|
pop edx
|
|
pop ebx
|
|
pop edi
|
|
pop esi
|
|
xor eax,eax
|
|
xor ecx,ecx
|
|
NEWSYM nodrawline
|
|
ret
|
|
|
|
NEWSYM priority2
|
|
test byte[scaddset],02h
|
|
jz near .nosubsc
|
|
; do background 2
|
|
mov byte[curbgpr],0h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndsub
|
|
mov ebp,0
|
|
call procspritessub
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndsub
|
|
mov ebp,1
|
|
call procspritessub
|
|
; do background 2
|
|
mov byte[curbgpr],20h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndsub
|
|
mov ebp,2
|
|
call procspritessub
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndsub
|
|
mov ebp,3
|
|
call procspritessub
|
|
.nosubsc
|
|
mov al,[winenabm]
|
|
mov [cwinenabm],al
|
|
; do background 2
|
|
mov byte[curbgpr],0h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndmain
|
|
mov ebp,0
|
|
call procspritesmain
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndmain
|
|
mov ebp,1
|
|
call procspritesmain
|
|
; do background 2
|
|
mov byte[curbgpr],20h
|
|
mov byte[curbgnum],02h
|
|
mov ebp,01h
|
|
call drawbackgrndmain
|
|
mov ebp,2
|
|
call procspritesmain
|
|
; do background 1
|
|
mov byte[curbgnum],01h
|
|
mov ebp,00h
|
|
call drawbackgrndmain
|
|
mov ebp,3
|
|
call procspritesmain
|
|
pop ebp
|
|
pop edx
|
|
pop ebx
|
|
pop edi
|
|
pop esi
|
|
xor eax,eax
|
|
xor ecx,ecx
|
|
ret
|
|
|
|
ALIGN32
|
|
SECTION .bss
|
|
NEWSYM tempbuffer, resd 33
|
|
NEWSYM currentobjptr, resd 1
|
|
NEWSYM curmosaicsz, resd 1
|
|
NEWSYM extbgdone, resb 1
|
|
SECTION .text
|
|
|
|
|
|
NEWSYM processmode7
|
|
mov al,[winenabm]
|
|
mov [cwinenabm],al
|
|
push esi
|
|
push edi
|
|
push ebx
|
|
push edx
|
|
push ebp
|
|
; get current sprite table
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
shl ebx,9
|
|
add ebx,[spritetablea]
|
|
mov [currentobjptr],ebx
|
|
; setup priorities
|
|
cmp byte[sprprifix],0
|
|
je .nosprprio
|
|
mov dword[cursprloc],sprlefttot
|
|
call preparesprpr
|
|
.nosprprio
|
|
; calculate current video offset
|
|
xor ebx,ebx
|
|
mov bx,[curypos]
|
|
mov esi,ebx
|
|
shl esi,8
|
|
shl ebx,5
|
|
add esi,ebx
|
|
add esi,16
|
|
add esi,[vidbuffer]
|
|
mov [curvidoffset],esi
|
|
; clear video buffer
|
|
mov edi,esi
|
|
mov ecx,64
|
|
xor eax,eax
|
|
rep stosd
|
|
; do sprite windowing
|
|
call makewindowsp
|
|
; clear registers
|
|
xor eax,eax
|
|
xor ecx,ecx
|
|
|
|
mov byte[extbgdone],0
|
|
|
|
test byte[interlval],40h
|
|
jz near .noback0
|
|
test byte[scrndis],02h
|
|
jnz near .noback0
|
|
; do background 1, extbg pr 0
|
|
test word[scrnon],0202h
|
|
jz near .noback0
|
|
mov byte[winon],0
|
|
test word[winenabm],0001h
|
|
jz near .nobackwin0
|
|
test word[winenabm],0100h
|
|
jnz near .nobackwin0
|
|
mov ebp,0
|
|
mov al,[winbg1en]
|
|
call makewindow
|
|
cmp byte[winon],0FFh
|
|
je near .noback0
|
|
.nobackwin0
|
|
mov byte[extbgdone],1
|
|
procmode7extbg [bg1scroly],[bg1scrolx],1
|
|
.noback0
|
|
|
|
; do objects
|
|
test byte[scrndis],10h
|
|
jnz near .nosprites1
|
|
test word[scrnon],1010h
|
|
jz near .nosprites1
|
|
cmp byte[winonsp],0FFh
|
|
je .nosprites1
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
mov cl,[sprleftpr+ebx]
|
|
cmp byte[sprprifix],0
|
|
je .nosprprio2
|
|
mov cl,[sprlefttot+ebx]
|
|
.nosprprio2
|
|
cmp cl,0
|
|
je .nosprites1
|
|
mov ebp,0
|
|
call drawsprites
|
|
.nosprites1
|
|
|
|
; display mode7
|
|
test byte[interlval],40h
|
|
jnz near .noback1
|
|
test byte[scrndis],01h
|
|
jnz near .noback1
|
|
; do background 1
|
|
test word[scrnon],0101h
|
|
jz near .noback1
|
|
mov byte[winon],0
|
|
test word[winenabm],0001h
|
|
jz near .nobackwin1
|
|
test word[winenabm],0100h
|
|
jnz near .nobackwin1
|
|
mov ebp,0
|
|
mov al,[winbg1en]
|
|
call makewindow
|
|
cmp byte[winon],0FFh
|
|
je near .noback1
|
|
.nobackwin1
|
|
procmode7 [bg1scroly],[bg1scrolx],1
|
|
.noback1
|
|
|
|
; do objects
|
|
test byte[scrndis],10h
|
|
jnz near .nosprites2
|
|
test word[scrnon],1010h
|
|
jz near .nosprites2
|
|
cmp byte[winonsp],0FFh
|
|
je .nosprites2
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
mov cl,[sprleftpr1+ebx]
|
|
cmp byte[sprprifix],0
|
|
je .nosprprio3
|
|
mov cl,[sprlefttot+ebx]
|
|
.nosprprio3
|
|
cmp cl,0
|
|
je .nosprites2
|
|
mov ebp,1
|
|
call drawsprites
|
|
.nosprites2
|
|
|
|
test byte[interlval],40h
|
|
jz near .noback0b
|
|
cmp byte[extbgdone],0
|
|
jne near .noback0b
|
|
test byte[scrndis],02h
|
|
jnz near .noback0b
|
|
; do background 1, extbg pr 0
|
|
test word[scrnon],0101h
|
|
jz near .noback0b
|
|
mov byte[winon],0
|
|
test word[winenabm],0001h
|
|
jz near .nobackwin0b
|
|
test word[winenabm],0100h
|
|
jnz near .nobackwin0b
|
|
mov ebp,0
|
|
mov al,[winbg1en]
|
|
call makewindow
|
|
cmp byte[winon],0FFh
|
|
je near .noback0b
|
|
.nobackwin0b
|
|
mov byte[extbgdone],1
|
|
procmode7extbg [bg1scroly],[bg1scrolx],1
|
|
.noback0b
|
|
|
|
test byte[interlval],40h
|
|
jz near .noback2
|
|
cmp byte[extbgdone],1
|
|
jne near .noback2
|
|
mov byte[winon],0
|
|
test word[winenabm],0001h
|
|
jz near .nobackwin2
|
|
test word[winenabm],0100h
|
|
jnz near .nobackwin2
|
|
mov ebp,0
|
|
mov al,[winbg1en]
|
|
call makewindow
|
|
cmp byte[winon],0FFh
|
|
je near .noback2
|
|
.nobackwin2
|
|
procmode7extbg2 [bg1scroly],[bg1scrolx],1
|
|
.noback2
|
|
|
|
; do objects
|
|
test byte[scrndis],10h
|
|
jnz near .nosprites3
|
|
test word[scrnon],1010h
|
|
jz near .nosprites3
|
|
cmp byte[winonsp],0FFh
|
|
je .nosprites3
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
mov cl,[sprleftpr2+ebx]
|
|
cmp byte[sprprifix],0
|
|
je .nosprprio4
|
|
mov cl,[sprlefttot+ebx]
|
|
.nosprprio4
|
|
cmp cl,0
|
|
je .nosprites3
|
|
mov ebp,2
|
|
call drawsprites
|
|
.nosprites3
|
|
; do objects
|
|
test byte[scrndis],10h
|
|
jnz near .nosprites4
|
|
test word[scrnon],1010h
|
|
jz near .nosprites4
|
|
cmp byte[winonsp],0FFh
|
|
je .nosprites4
|
|
xor ebx,ebx
|
|
mov bl,[curypos]
|
|
mov cl,[sprleftpr3+ebx]
|
|
cmp byte[sprprifix],0
|
|
je .nosprprio5
|
|
mov cl,[sprlefttot+ebx]
|
|
.nosprprio5
|
|
cmp cl,0
|
|
je .nosprites4
|
|
mov ebp,3
|
|
call drawsprites
|
|
.nosprites4
|
|
pop ebp
|
|
pop edx
|
|
pop ebx
|
|
pop edi
|
|
pop esi
|
|
ret
|
|
|
|
;*******************************************************
|
|
; Processes & Draws 4-bit sprites
|
|
;*******************************************************
|
|
|
|
NEWSYM drawsprites
|
|
cmp byte[sprprifix],1
|
|
je near drawspritesprio
|
|
.returnfrompr
|
|
test byte[cwinenabm],10h
|
|
jz .drawnowin
|
|
cmp byte[winonsp],0
|
|
jne near drawspriteswinon
|
|
.drawnowin
|
|
mov esi,[currentobjptr]
|
|
mov edi,[curvidoffset]
|
|
mov edx,esi
|
|
xor ebx,ebx
|
|
.loopobj
|
|
test byte[esi+7],20h
|
|
jnz near .drawspriteflipx
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
mov eax,[esi]
|
|
test al,0Fh
|
|
jz .skipa
|
|
add al,ch
|
|
mov [edi+ebx-8],al
|
|
.skipa
|
|
test ah,0Fh
|
|
jz .skipb
|
|
add ah,ch
|
|
mov [edi+ebx-7],ah
|
|
.skipb
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipc
|
|
add al,ch
|
|
mov [edi+ebx-6],al
|
|
.skipc
|
|
test ah,0Fh
|
|
jz .skipd
|
|
add ah,ch
|
|
mov [edi+ebx-5],ah
|
|
.skipd
|
|
mov eax,[esi+4]
|
|
test al,0Fh
|
|
jz .skipe
|
|
add al,ch
|
|
mov [edi+ebx-4],al
|
|
.skipe
|
|
test ah,0Fh
|
|
jz .skipf
|
|
add ah,ch
|
|
mov [edi+ebx-3],ah
|
|
.skipf
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipg
|
|
add al,ch
|
|
mov [edi+ebx-2],al
|
|
.skipg
|
|
test ah,0Fh
|
|
jz .skiph
|
|
add ah,ch
|
|
mov [edi+ebx-1],ah
|
|
.skiph
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz .loopobj
|
|
mov [currentobjptr],esi
|
|
ret
|
|
|
|
.drawspriteflipx
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
mov eax,[esi]
|
|
test al,0Fh
|
|
jz .skipa2
|
|
add al,ch
|
|
mov [edi+ebx-1],al
|
|
.skipa2
|
|
test ah,0Fh
|
|
jz .skipb2
|
|
add ah,ch
|
|
mov [edi+ebx-2],ah
|
|
.skipb2
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipc2
|
|
add al,ch
|
|
mov [edi+ebx-3],al
|
|
.skipc2
|
|
test ah,0Fh
|
|
jz .skipd2
|
|
add ah,ch
|
|
mov [edi+ebx-4],ah
|
|
.skipd2
|
|
mov eax,[esi+4]
|
|
test al,0Fh
|
|
jz .skipe2
|
|
add al,ch
|
|
mov [edi+ebx-5],al
|
|
.skipe2
|
|
test ah,0Fh
|
|
jz .skipf2
|
|
add ah,ch
|
|
mov [edi+ebx-6],ah
|
|
.skipf2
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipg2
|
|
add al,ch
|
|
mov [edi+ebx-7],al
|
|
.skipg2
|
|
test ah,0Fh
|
|
jz .skiph2
|
|
add ah,ch
|
|
mov [edi+ebx-8],ah
|
|
.skiph2
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
mov [currentobjptr],esi
|
|
ret
|
|
|
|
NEWSYM drawspriteswinon
|
|
mov esi,[currentobjptr]
|
|
mov edi,[curvidoffset]
|
|
mov edx,esi
|
|
xor ebx,ebx
|
|
.loopobj
|
|
test byte[esi+7],20h
|
|
jnz near .drawspriteflipx
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
mov eax,[esi]
|
|
test al,0Fh
|
|
jz .skipa
|
|
cmp byte[winspdata+ebx-8+16],0
|
|
jne .skipa
|
|
add al,ch
|
|
mov [edi+ebx-8],al
|
|
.skipa
|
|
test ah,0Fh
|
|
jz .skipb
|
|
cmp byte[winspdata+ebx-7+16],0
|
|
jne .skipb
|
|
add ah,ch
|
|
mov [edi+ebx-7],ah
|
|
.skipb
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipc
|
|
cmp byte[winspdata+ebx-6+16],0
|
|
jne .skipc
|
|
add al,ch
|
|
mov [edi+ebx-6],al
|
|
.skipc
|
|
test ah,0Fh
|
|
jz .skipd
|
|
cmp byte[winspdata+ebx-5+16],0
|
|
jne .skipd
|
|
add ah,ch
|
|
mov [edi+ebx-5],ah
|
|
.skipd
|
|
mov eax,[esi+4]
|
|
test al,0Fh
|
|
jz .skipe
|
|
cmp byte[winspdata+ebx-4+16],0
|
|
jne .skipe
|
|
add al,ch
|
|
mov [edi+ebx-4],al
|
|
.skipe
|
|
test ah,0Fh
|
|
jz .skipf
|
|
cmp byte[winspdata+ebx-3+16],0
|
|
jne .skipf
|
|
add ah,ch
|
|
mov [edi+ebx-3],ah
|
|
.skipf
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipg
|
|
cmp byte[winspdata+ebx-2+16],0
|
|
jne .skipg
|
|
add al,ch
|
|
mov [edi+ebx-2],al
|
|
.skipg
|
|
test ah,0Fh
|
|
jz .skiph
|
|
cmp byte[winspdata+ebx-1+16],0
|
|
jne .skiph
|
|
add ah,ch
|
|
mov [edi+ebx-1],ah
|
|
.skiph
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
mov [currentobjptr],esi
|
|
ret
|
|
|
|
.drawspriteflipx
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
mov eax,[esi]
|
|
test al,0Fh
|
|
jz .skipa2
|
|
cmp byte[winspdata+ebx-1+16],0
|
|
jne .skipa2
|
|
add al,ch
|
|
mov [edi+ebx-1],al
|
|
.skipa2
|
|
test ah,0Fh
|
|
jz .skipb2
|
|
cmp byte[winspdata+ebx-2+16],0
|
|
jne .skipb2
|
|
add ah,ch
|
|
mov [edi+ebx-2],ah
|
|
.skipb2
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipc2
|
|
cmp byte[winspdata+ebx-3+16],0
|
|
jne .skipc2
|
|
add al,ch
|
|
mov [edi+ebx-3],al
|
|
.skipc2
|
|
test ah,0Fh
|
|
jz .skipd2
|
|
cmp byte[winspdata+ebx-4+16],0
|
|
jne .skipd2
|
|
add ah,ch
|
|
mov [edi+ebx-4],ah
|
|
.skipd2
|
|
mov eax,[esi+4]
|
|
test al,0Fh
|
|
jz .skipe2
|
|
cmp byte[winspdata+ebx-5+16],0
|
|
jne .skipe2
|
|
add al,ch
|
|
mov [edi+ebx-5],al
|
|
.skipe2
|
|
test ah,0Fh
|
|
jz .skipf2
|
|
cmp byte[winspdata+ebx-6+16],0
|
|
jne .skipf2
|
|
add ah,ch
|
|
mov [edi+ebx-6],ah
|
|
.skipf2
|
|
shr eax,16
|
|
test al,0Fh
|
|
jz .skipg2
|
|
cmp byte[winspdata+ebx-7+16],0
|
|
jne .skipg2
|
|
add al,ch
|
|
mov [edi+ebx-7],al
|
|
.skipg2
|
|
test ah,0Fh
|
|
jz .skiph2
|
|
cmp byte[winspdata+ebx-8+16],0
|
|
jne .skiph2
|
|
add ah,ch
|
|
mov [edi+ebx-8],ah
|
|
.skiph2
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
mov [currentobjptr],esi
|
|
ret
|
|
|
|
NEWSYM drawspritesprio
|
|
cmp byte[sprclprio+ebp],0
|
|
je near .endobj
|
|
test byte[cwinenabm],10h
|
|
jz .drawnowin
|
|
cmp byte[winonsp],0
|
|
jne near drawspritespriowinon
|
|
.drawnowin
|
|
cmp dword[sprsingle],1
|
|
je near .drawsingle
|
|
mov esi,[currentobjptr]
|
|
mov edi,[curvidoffset]
|
|
mov edx,esi
|
|
xor ebx,ebx
|
|
.loopobj
|
|
test byte[esi+7],20h
|
|
jnz near .drawspriteflipx
|
|
mov bx,[esi]
|
|
push edx
|
|
mov ch,[esi+6]
|
|
mov dl,[esi+7]
|
|
and edx,03h
|
|
cmp edx,ebp
|
|
jne near .notprio
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawa sprdrawpra
|
|
pop edx
|
|
.nodrawspr
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
ret
|
|
.notprio
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawa sprdrawpra2
|
|
pop edx
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
ret
|
|
.drawspriteflipx
|
|
mov bx,[esi]
|
|
push edx
|
|
mov ch,[esi+6]
|
|
mov dl,[esi+7]
|
|
and edx,03h
|
|
cmp edx,ebp
|
|
jne near .notpriof
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawaf sprdrawpra
|
|
pop edx
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
.endobj
|
|
ret
|
|
.notpriof
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawaf sprdrawpra2
|
|
pop edx
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
ret
|
|
.clearcsprmem
|
|
xor eax,eax
|
|
mov ecx,64
|
|
mov edi,sprpriodata+16
|
|
rep stosd
|
|
ret
|
|
.drawsingle
|
|
mov esi,[currentobjptr]
|
|
mov edi,[curvidoffset]
|
|
mov edx,ecx
|
|
and edx,0FFh
|
|
shl edx,3
|
|
sub edx,8
|
|
add edx,esi
|
|
mov esi,edx
|
|
xor ebx,ebx
|
|
.loopobj2
|
|
test byte[esi+7],20h
|
|
jnz near .drawspriteflipx2
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
sprdrawa sprdrawprb
|
|
sub edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj2
|
|
ret
|
|
.drawspriteflipx2
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
sprdrawaf sprdrawprb
|
|
sub edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj2
|
|
ret
|
|
|
|
NEWSYM drawspritespriowinon
|
|
cmp dword[sprsingle],1
|
|
je near .drawsingle
|
|
mov esi,[currentobjptr]
|
|
mov edi,[curvidoffset]
|
|
mov edx,esi
|
|
xor ebx,ebx
|
|
.loopobj
|
|
test byte[esi+7],20h
|
|
jnz near .drawspriteflipx
|
|
mov bx,[esi]
|
|
push edx
|
|
mov ch,[esi+6]
|
|
mov dl,[esi+7]
|
|
and edx,03h
|
|
cmp edx,ebp
|
|
jne near .notprio
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawa sprdrawpraw
|
|
pop edx
|
|
.nodrawspr
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
ret
|
|
.notprio
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawa sprdrawpra2
|
|
pop edx
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
ret
|
|
.drawspriteflipx
|
|
mov bx,[esi]
|
|
push edx
|
|
mov ch,[esi+6]
|
|
mov dl,[esi+7]
|
|
and edx,03h
|
|
cmp edx,ebp
|
|
jne near .notpriof
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawaf sprdrawpraw
|
|
pop edx
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
.endobj
|
|
ret
|
|
.notpriof
|
|
mov esi,[esi+2]
|
|
mov dl,[csprbit]
|
|
sprdrawaf sprdrawpra2
|
|
pop edx
|
|
add edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj
|
|
rol byte[csprbit],1
|
|
cmp byte[csprbit],1
|
|
je near .clearcsprmem
|
|
ret
|
|
.clearcsprmem
|
|
xor eax,eax
|
|
mov ecx,64
|
|
mov edi,sprpriodata+16
|
|
rep stosd
|
|
ret
|
|
.drawsingle
|
|
mov esi,[currentobjptr]
|
|
mov edi,[curvidoffset]
|
|
mov edx,ecx
|
|
and edx,0FFh
|
|
shl edx,3
|
|
sub edx,8
|
|
add edx,esi
|
|
mov esi,edx
|
|
xor ebx,ebx
|
|
.loopobj2
|
|
test byte[esi+7],20h
|
|
jnz near .drawspriteflipx2
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
sprdrawa sprdrawprbw
|
|
sub edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj2
|
|
ret
|
|
.drawspriteflipx2
|
|
mov bx,[esi]
|
|
mov ch,[esi+6]
|
|
mov esi,[esi+2]
|
|
sprdrawaf sprdrawprbw
|
|
sub edx,8
|
|
mov esi,edx
|
|
dec cl
|
|
jnz near .loopobj2
|
|
ret
|
|
|
|
SECTION .data
|
|
NEWSYM prfixobjl, db 0
|
|
NEWSYM csprbit, db 1
|
|
NEWSYM csprprlft, db 0
|
|
SECTION .text
|
|
;*******************************************************
|
|
; Processes & Draws 8x8 tiles in 2, 4, & 8 bit mode
|
|
;*******************************************************
|
|
NEWSYM proc8x8
|
|
cmp byte[bgmode],5
|
|
je near proc16x8
|
|
; ax = # of rows down
|
|
mov ebx,eax
|
|
shr eax,3
|
|
and eax,63
|
|
and ebx,07h
|
|
cmp byte[CacheCheckSkip],1
|
|
je .docache
|
|
cmp byte[edi+eax],0
|
|
jne .nocachereq
|
|
.docache
|
|
; cmp byte[ccud],0
|
|
; jne .nocachereq
|
|
mov byte[edi+eax],1
|
|
cmp byte[curcolor],2
|
|
jne .no4b
|
|
; cache 4-bit
|
|
call cachetile4b
|
|
jmp .nocachereq
|
|
.no4b
|
|
cmp byte[curcolor],1
|
|
je .2b
|
|
; cache 8-bit
|
|
call cachetile8b
|
|
jmp .nocachereq
|
|
.2b
|
|
; cache 2-bit
|
|
call cachetile2b
|
|
.nocachereq
|
|
test edx,0100h
|
|
jz .tilexa
|
|
test al,20h
|
|
jz .tileya
|
|
; bgptrd/bgptrc
|
|
mov ecx,[bgptrd]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptrc]
|
|
mov [bgptrx2],ecx
|
|
jmp .skiptile
|
|
.tileya
|
|
; bgptrb/bgptra
|
|
mov ecx,[bgptrb]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptr]
|
|
mov [bgptrx2],ecx
|
|
jmp .skiptile
|
|
.tilexa
|
|
test al,20h
|
|
jz .tileya2
|
|
; bgptrc/bgptrd
|
|
mov ecx,[bgptrc]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptrd]
|
|
mov [bgptrx2],ecx
|
|
jmp .skiptile
|
|
.tileya2
|
|
; bgptra/bgptrb
|
|
mov ecx,[bgptr]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptrb]
|
|
mov [bgptrx2],ecx
|
|
.skiptile
|
|
; set up edi & yadder to point to tile data
|
|
shl ebx,3
|
|
mov [yadder],ebx
|
|
and al,1Fh
|
|
mov edi,[vram]
|
|
mov ebx,eax
|
|
shl ebx,6
|
|
mov eax,[bgptrx1]
|
|
add edi,ebx
|
|
mov [temptile],edi
|
|
add edi,eax
|
|
; dx = # of columns right
|
|
; cx = bgxlim
|
|
mov eax,edx
|
|
shr edx,3
|
|
mov bl,[curypos]
|
|
and edx,1Fh
|
|
mov [temp],dl
|
|
and eax,07h
|
|
add dl,dl
|
|
add edi,edx
|
|
|
|
mov esi,eax
|
|
mov ebx,[tempcach]
|
|
mov edx,[temptile]
|
|
mov eax,[bgptrx2]
|
|
and eax,0FFFFh
|
|
add edx,eax
|
|
mov al,[temp]
|
|
mov ecx,[yadder]
|
|
mov ah,[bshifter]
|
|
; fill up tempbuffer with pointer #s that point to cached video mem
|
|
; to calculate pointer, get first byte
|
|
; esi = pointer to video buffer
|
|
; edi = pointer to tile data
|
|
; ebx = cached memory
|
|
; ecx = y adder
|
|
; edx = secondary tile pointer
|
|
; al = current x position
|
|
ret
|
|
|
|
NEWSYM proc16x8
|
|
; ax = # of rows down
|
|
mov ebx,eax
|
|
shr eax,3
|
|
and ebx,07h
|
|
and eax,63
|
|
cmp byte[edi+eax],0
|
|
jne .nocachereq
|
|
; cmp byte[ccud],0
|
|
; jne .nocachereq
|
|
mov byte[edi+eax],1
|
|
cmp byte[curcolor],2
|
|
jne .no4b
|
|
; cache 4-bit
|
|
call cachetile4b16x16
|
|
jmp .nocachereq
|
|
.no4b
|
|
cmp byte[curcolor],1
|
|
je .2b
|
|
; cache 8-bit
|
|
call cachetile8b16x16
|
|
jmp .nocachereq
|
|
.2b
|
|
; cache 2-bit
|
|
call cachetile2b16x16
|
|
.nocachereq
|
|
test edx,0100h
|
|
jz .tilexa
|
|
test al,20h
|
|
jz .tileya
|
|
; bgptrd/bgptrc
|
|
mov ecx,[bgptrd]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptrc]
|
|
mov [bgptrx2],ecx
|
|
jmp .skiptile
|
|
.tileya
|
|
; bgptrb/bgptra
|
|
mov ecx,[bgptrb]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptr]
|
|
mov [bgptrx2],ecx
|
|
jmp .skiptile
|
|
.tilexa
|
|
test al,20h
|
|
jz .tileya2
|
|
; bgptrc/bgptrd
|
|
mov ecx,[bgptrc]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptrd]
|
|
mov [bgptrx2],ecx
|
|
jmp .skiptile
|
|
.tileya2
|
|
; bgptra/bgptrb
|
|
mov ecx,[bgptr]
|
|
mov [bgptrx1],ecx
|
|
mov ecx,[bgptrb]
|
|
mov [bgptrx2],ecx
|
|
.skiptile
|
|
; set up edi & yadder to point to tile data
|
|
shl ebx,3
|
|
mov [yadder],ebx
|
|
and al,1Fh
|
|
mov edi,[vram]
|
|
mov ebx,eax
|
|
shl ebx,6
|
|
mov eax,[bgptrx1]
|
|
add edi,ebx
|
|
mov [temptile],edi
|
|
add edi,eax
|
|
; dx = # of columns right
|
|
; cx = bgxlim
|
|
mov eax,edx
|
|
shr edx,3
|
|
mov bl,[curypos]
|
|
and edx,1Fh
|
|
mov [temp],dl
|
|
and eax,07h
|
|
add dl,dl
|
|
add edi,edx
|
|
|
|
mov esi,eax
|
|
mov ebx,[tempcach]
|
|
mov edx,[temptile]
|
|
mov eax,[bgptrx2]
|
|
and eax,0FFFFh
|
|
add edx,eax
|
|
mov al,[temp]
|
|
mov ecx,[yadder]
|
|
mov ah,[bshifter]
|
|
; fill up tempbuffer with pointer #s that point to cached video mem
|
|
; to calculate pointer, get first byte
|
|
; esi = pointer to video buffer
|
|
; edi = pointer to tile data
|
|
; ebx = cached memory
|
|
; ecx = y adder
|
|
; edx = secondary tile pointer
|
|
; al = current x position
|
|
ret
|
|
|
|
SECTION .bss
|
|
NEWSYM drawn, resb 1
|
|
NEWSYM curbgpr, resb 1 ; 00h = low priority, 20h = high priority
|
|
SECTION .text
|
|
|
|
%macro drawpixel8b8x8 3
|
|
or %1,%1
|
|
jz %2
|
|
add %1,dh
|
|
mov [esi+%3],%1
|
|
%2
|
|
%endmacro
|
|
|
|
%macro drawpixel8b8x8win 3
|
|
or %1,%1
|
|
jz %2
|
|
test byte[ebp+%3],0FFh
|
|
jnz %2
|
|
add %1,dh
|
|
mov [esi+%3],%1
|
|
%2
|
|
%endmacro
|
|
|
|
SECTION .bss
|
|
NEWSYM winptrref, resd 1
|
|
SECTION .text
|
|
|
|
NEWSYM draw8x8
|
|
cmp byte[osm2dis],1
|
|
je .osm2dis
|
|
cmp byte[bgmode],2
|
|
je near draw8x8offset
|
|
.osm2dis
|
|
cmp byte[bgmode],5
|
|
jae near draw16x8
|
|
mov [temp],al
|
|
mov [bshifter],ah
|
|
mov eax,esi
|
|
mov [yadder],ecx
|
|
mov [tempcach],ebx
|
|
mov ebx,56
|
|
sub ebx,ecx
|
|
mov [yrevadder],ebx
|
|
.retfromoffset
|
|
; esi = pointer to video buffer
|
|
mov esi,[cwinptr]
|
|
sub esi,eax
|
|
mov [winptrref],esi
|
|
mov esi,[curvidoffset]
|
|
sub esi,eax ; esi = [vidbuffer] + curypos * 288 + 16 - HOfs
|
|
cmp byte[curmosaicsz],1
|
|
je .nomosaic
|
|
mov esi,xtravbuf+16
|
|
mov ecx,64
|
|
.clearnext
|
|
mov dword[esi],0
|
|
add esi,4
|
|
dec ecx
|
|
jnz .clearnext
|
|
mov esi,xtravbuf+16
|
|
sub esi,eax
|
|
.nomosaic
|
|
mov [temptile],edx
|
|
mov dword[bgofwptr],vcache2ba+262144
|
|
mov dword[bgsubby],262144
|
|
cmp dword[tempcach],vcache2ba+262144
|
|
jb .nobit
|
|
mov dword[bgofwptr],vcache4ba+131072
|
|
mov dword[bgsubby],131072
|
|
cmp dword[tempcach],vcache4ba+131072
|
|
jb .nobit
|
|
mov dword[bgofwptr],vcache8ba+65536
|
|
mov dword[bgsubby],65536
|
|
.nobit
|
|
; tile value : bit 15 = flipy, bit 14 = flipx, bit 13 = priority value
|
|
; bit 10-12 = palette, 0-9=tile#
|
|
cmp byte[curmosaicsz],1
|
|
jne .domosaic
|
|
cmp byte[winon],0
|
|
jne near draw8x8winon
|
|
.domosaic
|
|
mov ch,33
|
|
mov byte[drawn],0
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8 al, .loopd1, 0
|
|
drawpixel8b8x8 ah, .loopd2, 1
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd3, 2
|
|
drawpixel8b8x8 ah, .loopd4, 3
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8 al, .loopd5, 4
|
|
drawpixel8b8x8 ah, .loopd6, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7, 6
|
|
drawpixel8b8x8 ah, .loopd8, 7
|
|
.skiploop2
|
|
.hprior
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc2
|
|
mov edi,[temptile]
|
|
.loopc2
|
|
dec ch
|
|
jnz near .loopa
|
|
cmp byte[drawn],0
|
|
je .nodraw
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
.nodraw
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8 al, .loopd1b, 7
|
|
drawpixel8b8x8 ah, .loopd2b, 6
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd3b, 5
|
|
drawpixel8b8x8 ah, .loopd4b, 4
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8 al, .loopd5b, 3
|
|
drawpixel8b8x8 ah, .loopd6b, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7b, 1
|
|
drawpixel8b8x8 ah, .loopd8b, 0
|
|
.skiploop2b
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc
|
|
mov edi,[temptile]
|
|
.loopc
|
|
dec ch
|
|
jnz near .loopa
|
|
cmp byte[drawn],0
|
|
je .nodraw2
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
.nodraw2
|
|
ret
|
|
|
|
NEWSYM draw8x8winon
|
|
mov ch,33
|
|
mov byte[drawn],0
|
|
mov ebp,[winptrref]
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8win al, .loopd1, 0
|
|
drawpixel8b8x8win ah, .loopd2, 1
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd3, 2
|
|
drawpixel8b8x8win ah, .loopd4, 3
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8win al, .loopd5, 4
|
|
drawpixel8b8x8win ah, .loopd6, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7, 6
|
|
drawpixel8b8x8win ah, .loopd8, 7
|
|
.skiploop2
|
|
.hprior
|
|
add esi,8
|
|
add ebp,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc2
|
|
mov edi,[temptile]
|
|
.loopc2
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8win al, .loopd1b, 7
|
|
drawpixel8b8x8win ah, .loopd2b, 6
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd3b, 5
|
|
drawpixel8b8x8win ah, .loopd4b, 4
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8win al, .loopd5b, 3
|
|
drawpixel8b8x8win ah, .loopd6b, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7b, 1
|
|
drawpixel8b8x8win ah, .loopd8b, 0
|
|
.skiploop2b
|
|
add esi,8
|
|
add ebp,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc
|
|
mov edi,[temptile]
|
|
.loopc
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
SECTION .bss
|
|
NEWSYM alttile, resb 1
|
|
NEWSYM hirestiledat, resb 256
|
|
SECTION .text
|
|
|
|
NEWSYM draw16x8
|
|
push eax
|
|
xor eax,eax
|
|
mov al,[curypos]
|
|
mov byte[hirestiledat+eax],1
|
|
pop eax
|
|
mov [temp],al
|
|
mov [bshifter],ah
|
|
mov eax,esi
|
|
mov [yadder],ecx
|
|
mov [tempcach],ebx
|
|
mov ebx,56
|
|
sub ebx,ecx
|
|
mov [yrevadder],ebx
|
|
; esi = pointer to video buffer
|
|
mov esi,[cwinptr]
|
|
sub esi,eax
|
|
mov [winptrref],esi
|
|
mov esi,[curvidoffset]
|
|
sub esi,eax ; esi = [vidbuffer] + curypos * 288 + 16 - HOfs
|
|
cmp byte[curmosaicsz],1
|
|
je .nomosaic
|
|
mov esi,xtravbuf+16
|
|
mov ecx,64
|
|
.clearnext
|
|
mov dword[esi],0
|
|
add esi,4
|
|
dec ecx
|
|
jnz .clearnext
|
|
mov esi,xtravbuf+16
|
|
sub esi,eax
|
|
.nomosaic
|
|
mov [temptile],edx
|
|
mov dword[bgofwptr],vcache2ba+262144
|
|
mov dword[bgsubby],262144
|
|
cmp dword[tempcach],vcache2ba+262144
|
|
jb .nobit
|
|
mov dword[bgofwptr],vcache4ba+131072
|
|
mov dword[bgsubby],131072
|
|
cmp dword[tempcach],vcache4ba+131072
|
|
jb .nobit
|
|
mov dword[bgofwptr],vcache8ba+65536
|
|
mov dword[bgsubby],65536
|
|
.nobit
|
|
; tile value : bit 15 = flipy, bit 14 = flipx, bit 13 = priority value
|
|
; bit 10-12 = palette, 0-9=tile#
|
|
cmp byte[curmosaicsz],1
|
|
jne .domosaic
|
|
cmp byte[winon],0
|
|
jne near draw16x8winon
|
|
.domosaic
|
|
cmp byte[res512switch],0
|
|
jne near draw16x8b
|
|
mov ch,33
|
|
mov byte[drawn],0
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8 al, .loopd1, 0
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd3, 1
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8 al, .loopd5, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7, 3
|
|
.skiploop2
|
|
add ebx,64
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1c
|
|
drawpixel8b8x8 al, .loopd1c, 4
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd3c, 5
|
|
.skiploop1c
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2c
|
|
drawpixel8b8x8 al, .loopd5c, 6
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7c, 7
|
|
.skiploop2c
|
|
.hprior
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc2
|
|
mov edi,[temptile]
|
|
.loopc2
|
|
dec ch
|
|
jnz near .loopa
|
|
cmp byte[drawn],0
|
|
je .nodraw
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
.nodraw
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8 ah, .loopd1b, 7
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 ah, .loopd3b, 6
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8 ah, .loopd5b, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 ah, .loopd7b, 4
|
|
.skiploop2b
|
|
add ebx,64
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1d
|
|
drawpixel8b8x8 ah, .loopd1d, 3
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 ah, .loopd3d, 2
|
|
.skiploop1d
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2d
|
|
drawpixel8b8x8 ah, .loopd5d, 1
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 ah, .loopd7d, 0
|
|
.skiploop2d
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc
|
|
mov edi,[temptile]
|
|
.loopc
|
|
dec ch
|
|
jnz near .loopa
|
|
cmp byte[drawn],0
|
|
je .nodraw2
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
cmp byte[winon],0
|
|
jne near dowindow
|
|
.nodraw2
|
|
ret
|
|
|
|
NEWSYM draw16x8b
|
|
mov ch,33
|
|
mov byte[drawn],0
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8 ah, .loopd1, 0
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 ah, .loopd3, 1
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8 ah, .loopd5, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 ah, .loopd7, 3
|
|
.skiploop2
|
|
add ebx,64
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1c
|
|
drawpixel8b8x8 ah, .loopd1c, 4
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 ah, .loopd3c, 5
|
|
.skiploop1c
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2c
|
|
drawpixel8b8x8 ah, .loopd5c, 6
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 ah, .loopd7c, 7
|
|
.skiploop2c
|
|
.hprior
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc2
|
|
mov edi,[temptile]
|
|
.loopc2
|
|
dec ch
|
|
jnz near .loopa
|
|
cmp byte[drawn],0
|
|
je .nodraw
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
.nodraw
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8 al, .loopd2b, 7
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd4b, 6
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8 al, .loopd5b, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7b, 4
|
|
.skiploop2b
|
|
add ebx,64
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1d
|
|
drawpixel8b8x8 al, .loopd1d, 3
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd3d, 2
|
|
.skiploop1d
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2d
|
|
drawpixel8b8x8 al, .loopd5d, 1
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7d, 0
|
|
.skiploop2d
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc
|
|
mov edi,[temptile]
|
|
.loopc
|
|
dec ch
|
|
jnz near .loopa
|
|
cmp byte[drawn],0
|
|
je .nodraw2
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
.nodraw2
|
|
ret
|
|
|
|
NEWSYM draw16x8winon
|
|
cmp byte[res512switch],0
|
|
jne near draw16x8bwinon
|
|
mov ch,33
|
|
mov ebp,[winptrref]
|
|
mov byte[drawn],0
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8win al, .loopd1, 0
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd3, 1
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8win al, .loopd5, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7, 3
|
|
.skiploop2
|
|
add ebx,64
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1c
|
|
drawpixel8b8x8win al, .loopd1c, 4
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd3c, 5
|
|
.skiploop1c
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2c
|
|
drawpixel8b8x8win al, .loopd5c, 6
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7c, 7
|
|
.skiploop2c
|
|
.hprior
|
|
add ebp,8
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc2
|
|
mov edi,[temptile]
|
|
.loopc2
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8win ah, .loopd1b, 7
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win ah, .loopd3b, 6
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8win ah, .loopd5b, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win ah, .loopd7b, 4
|
|
.skiploop2b
|
|
add ebx,64
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1d
|
|
drawpixel8b8x8win ah, .loopd1d, 3
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win ah, .loopd3d, 2
|
|
.skiploop1d
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2d
|
|
drawpixel8b8x8win ah, .loopd5d, 1
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win ah, .loopd7d, 0
|
|
.skiploop2d
|
|
add ebp,8
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc
|
|
mov edi,[temptile]
|
|
.loopc
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
NEWSYM draw16x8bwinon
|
|
mov ch,33
|
|
mov ebp,[winptrref]
|
|
mov byte[drawn],0
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8win ah, .loopd1, 0
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win ah, .loopd3, 1
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8win ah, .loopd5, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win ah, .loopd7, 3
|
|
.skiploop2
|
|
add ebx,64
|
|
; Start loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1c
|
|
drawpixel8b8x8win ah, .loopd1c, 4
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win ah, .loopd3c, 5
|
|
.skiploop1c
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2c
|
|
drawpixel8b8x8win ah, .loopd5c, 6
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win ah, .loopd7c, 7
|
|
.skiploop2c
|
|
.hprior
|
|
add ebp,8
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc2
|
|
mov edi,[temptile]
|
|
.loopc2
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8win al, .loopd2b, 7
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd4b, 6
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8win al, .loopd5b, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7b, 4
|
|
.skiploop2b
|
|
add ebx,64
|
|
mov eax,[ebx]
|
|
or eax,eax
|
|
je .skiploop1d
|
|
drawpixel8b8x8win al, .loopd1d, 3
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd3d, 2
|
|
.skiploop1d
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2d
|
|
drawpixel8b8x8win al, .loopd5d, 1
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7d, 0
|
|
.skiploop2d
|
|
add ebp,8
|
|
add esi,8
|
|
inc dl
|
|
cmp dl,20h
|
|
jne .loopc
|
|
mov edi,[temptile]
|
|
.loopc
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
SECTION .data
|
|
NEWSYM extraleft, db 0,0,0,1,0,1,2,2,0,2,3,1,2,4,2,1
|
|
SECTION .text
|
|
|
|
NEWSYM domosaic
|
|
mov esi,xtravbuf+16
|
|
mov edi,[curvidoffset]
|
|
xor ecx,ecx
|
|
mov cl,dh
|
|
mov dl,dh
|
|
sub dl,[extraleft+ecx]
|
|
mov ecx,256
|
|
mov al,[esi]
|
|
cmp byte[winon],0
|
|
jne near domosaicwin
|
|
test al,0FFh
|
|
jz .zeroloop
|
|
.loopm
|
|
mov [edi],al
|
|
inc esi
|
|
inc edi
|
|
dec ecx
|
|
jz .doneloop
|
|
dec dl
|
|
jnz .loopm
|
|
mov al,[esi]
|
|
mov dl,dh
|
|
test al,0FFh
|
|
jnz .loopm
|
|
.zeroloop
|
|
inc esi
|
|
inc edi
|
|
dec ecx
|
|
jz .doneloop
|
|
dec dl
|
|
jnz .zeroloop
|
|
mov al,[esi]
|
|
mov dl,dh
|
|
test al,0FFh
|
|
jnz .loopm
|
|
jmp .zeroloop
|
|
.doneloop
|
|
ret
|
|
|
|
NEWSYM domosaicwin
|
|
mov ebp,[winptrref]
|
|
test al,0FFh
|
|
jz .zeroloop
|
|
.loopm
|
|
cmp byte[ebp],0
|
|
jne .nozero2
|
|
mov [edi],al
|
|
.nozero2
|
|
inc esi
|
|
inc edi
|
|
inc ebp
|
|
dec ecx
|
|
jz .doneloop
|
|
dec dl
|
|
jnz .loopm
|
|
mov al,[esi]
|
|
mov dl,dh
|
|
test al,0FFh
|
|
jnz .loopm
|
|
.zeroloop
|
|
inc esi
|
|
inc edi
|
|
inc ebp
|
|
dec ecx
|
|
jz .doneloop
|
|
dec dl
|
|
jnz .zeroloop
|
|
mov al,[esi]
|
|
mov dl,dh
|
|
test al,0FFh
|
|
jnz .loopm
|
|
jmp .zeroloop
|
|
.doneloop
|
|
ret
|
|
|
|
NEWSYM dowindow
|
|
mov ebx,windowdata
|
|
mov esi,xtravbuf+16
|
|
mov edi,[curvidoffset]
|
|
xor edx,edx
|
|
xor ch,ch
|
|
.getnext
|
|
mov cl,[ebx]
|
|
cmp dl,cl
|
|
je .procnext
|
|
.dorest
|
|
sub cl,dl
|
|
cmp ch,0
|
|
ja .nodraw
|
|
.loopa
|
|
mov eax,[esi+edx]
|
|
test al,0FFh
|
|
jz .nocopy
|
|
mov [edi+edx],al
|
|
.nocopy
|
|
inc dl
|
|
dec cl
|
|
jz .procnext
|
|
test ah,0FFh
|
|
jz .nocopyb
|
|
mov [edi+edx],ah
|
|
.nocopyb
|
|
inc dl
|
|
dec cl
|
|
jz .procnext
|
|
shr eax,16
|
|
test al,0FFh
|
|
jz .nocopyc
|
|
mov [edi+edx],al
|
|
.nocopyc
|
|
inc dl
|
|
dec cl
|
|
jz .procnext
|
|
test ah,0FFh
|
|
jz .nocopyd
|
|
mov [edi+edx],ah
|
|
.nocopyd
|
|
inc dl
|
|
dec cl
|
|
jnz .loopa
|
|
.procnext
|
|
add ch,[ebx+1]
|
|
add ebx,2
|
|
test byte[numwin],0FFh
|
|
jz .finishwin
|
|
dec byte[numwin]
|
|
jnz .getnext
|
|
xor cl,cl
|
|
jmp .dorest
|
|
.nodraw
|
|
add dl,cl
|
|
jmp .procnext
|
|
.finishwin
|
|
xor eax,eax
|
|
ret
|
|
|
|
ALIGN32
|
|
|
|
SECTION .bss
|
|
NEWSYM yadder, resd 1
|
|
NEWSYM yrevadder, resd 1
|
|
NEWSYM tempcach, resd 1 ; points to cached memory
|
|
NEWSYM temptile, resd 1 ; points to the secondary video pointer
|
|
NEWSYM bgptr, resd 1
|
|
NEWSYM bgptrb, resd 1
|
|
NEWSYM bgptrc, resd 1
|
|
NEWSYM bgptrd, resd 1
|
|
NEWSYM bgptrx1, resd 1
|
|
NEWSYM bgptrx2, resd 1
|
|
NEWSYM curvidoffset, resd 1
|
|
NEWSYM winon, resd 1
|
|
NEWSYM bgofwptr, resd 1
|
|
NEWSYM bgsubby, resd 1
|
|
SECTION .text
|
|
|
|
|
|
NEWSYM draw8x8offset
|
|
mov [temp],al
|
|
mov [bshifter],ah
|
|
mov eax,esi
|
|
mov [yadder],ecx
|
|
mov [tempcach],ebx
|
|
mov ebx,56
|
|
sub ebx,ecx
|
|
mov [yrevadder],ebx
|
|
initoffsetmode
|
|
; esi = pointer to video buffer
|
|
mov esi,[cwinptr]
|
|
sub esi,eax
|
|
mov [winptrref],esi
|
|
mov esi,[curvidoffset]
|
|
sub esi,eax ; esi = [vidbuffer] + curypos * 288 + 16 - HOfs
|
|
cmp byte[curmosaicsz],1
|
|
je .nomosaic
|
|
mov esi,xtravbuf+16
|
|
mov ecx,64
|
|
.clearnext
|
|
mov dword[esi],0
|
|
add esi,4
|
|
dec ecx
|
|
jnz .clearnext
|
|
mov esi,xtravbuf+16
|
|
sub esi,eax
|
|
.nomosaic
|
|
mov [temptile],edx
|
|
mov dword[bgofwptr],vcache2ba+262144
|
|
mov dword[bgsubby],262144
|
|
cmp dword[tempcach],vcache2ba+262144
|
|
jb .nobit
|
|
mov dword[bgofwptr],vcache4ba+131072
|
|
mov dword[bgsubby],131072
|
|
cmp dword[tempcach],vcache4ba+131072
|
|
jb .nobit
|
|
mov dword[bgofwptr],vcache8ba+65536
|
|
mov dword[bgsubby],65536
|
|
.nobit
|
|
; tile value : bit 15 = flipy, bit 14 = flipx, bit 13 = priority value
|
|
; bit 10-12 = palette, 0-9=tile#
|
|
cmp byte[curmosaicsz],1
|
|
jne .domosaic
|
|
cmp byte[winon],0
|
|
jne near draw8x8winon
|
|
.domosaic
|
|
mov byte[offsettilel],33
|
|
mov byte[drawn],0
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
; add dword[offsetptrb],2
|
|
; add dword[offsetcedi],2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
offsetmcachechk
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8 al, .loopd1, 0
|
|
drawpixel8b8x8 ah, .loopd2, 1
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd3, 2
|
|
drawpixel8b8x8 ah, .loopd4, 3
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8 al, .loopd5, 4
|
|
drawpixel8b8x8 ah, .loopd6, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7, 6
|
|
drawpixel8b8x8 ah, .loopd8, 7
|
|
.skiploop2
|
|
.hprior
|
|
procoffsetmode
|
|
add esi,8
|
|
dec byte[offsettilel]
|
|
jnz near .loopa
|
|
cmp byte[drawn],0
|
|
je .nodraw
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
.nodraw
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8 al, .loopd1b, 7
|
|
drawpixel8b8x8 ah, .loopd2b, 6
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8 al, .loopd3b, 5
|
|
drawpixel8b8x8 ah, .loopd4b, 4
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8 al, .loopd5b, 3
|
|
drawpixel8b8x8 ah, .loopd6b, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8 al, .loopd7b, 1
|
|
drawpixel8b8x8 ah, .loopd8b, 0
|
|
.skiploop2b
|
|
procoffsetmode
|
|
add esi,8
|
|
dec byte[offsettilel]
|
|
jnz near .loopa
|
|
xor eax,eax
|
|
cmp byte[drawn],0
|
|
je .nodraw2
|
|
mov dh,byte[curmosaicsz]
|
|
cmp dh,1
|
|
jne near domosaic
|
|
.nodraw2
|
|
ret
|
|
|
|
NEWSYM draw8x8winonoffset
|
|
mov ch,33
|
|
mov byte[drawn],0
|
|
mov ebp,[winptrref]
|
|
mov dl,[temp]
|
|
.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
|
add edi,2
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
|
|
and eax,03FFh ; filter out tile #
|
|
offsetmcachechk
|
|
mov ebx,[tempcach]
|
|
shl eax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1
|
|
drawpixel8b8x8win al, .loopd1, 0
|
|
drawpixel8b8x8win ah, .loopd2, 1
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd3, 2
|
|
drawpixel8b8x8win ah, .loopd4, 3
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2
|
|
drawpixel8b8x8win al, .loopd5, 4
|
|
drawpixel8b8x8win ah, .loopd6, 5
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7, 6
|
|
drawpixel8b8x8win ah, .loopd8, 7
|
|
.skiploop2
|
|
.hprior
|
|
procoffsetmode
|
|
add esi,8
|
|
add ebp,8
|
|
dec ch
|
|
jnz near .loopa
|
|
xor eax,eax
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
or eax,eax
|
|
je .skiploop1b
|
|
drawpixel8b8x8win al, .loopd1b, 7
|
|
drawpixel8b8x8win ah, .loopd2b, 6
|
|
mov eax,[ebx+2]
|
|
drawpixel8b8x8win al, .loopd3b, 5
|
|
drawpixel8b8x8win ah, .loopd4b, 4
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
or eax,eax
|
|
je .skiploop2b
|
|
drawpixel8b8x8win al, .loopd5b, 3
|
|
drawpixel8b8x8win ah, .loopd6b, 2
|
|
mov eax,[ebx+6]
|
|
drawpixel8b8x8win al, .loopd7b, 1
|
|
drawpixel8b8x8win ah, .loopd8b, 0
|
|
.skiploop2b
|
|
procoffsetmode
|
|
add esi,8
|
|
add ebp,8
|
|
dec ch
|
|
jnz near .loopa
|
|
xor eax,eax
|
|
ret
|
|
|
|
ALIGN32
|
|
|
|
SECTION .bss
|
|
NEWSYM offsetmodeptr, resd 1
|
|
NEWSYM offsetptra, resd 1
|
|
NEWSYM offsetptrb, resd 1
|
|
NEWSYM prevtempcache, resd 1
|
|
NEWSYM prevoffsetdat, resd 1
|
|
NEWSYM offsetenab, resd 1
|
|
NEWSYM offsettilel, resd 1
|
|
NEWSYM offsetrevval, resd 1
|
|
NEWSYM posyscroll, resd 1
|
|
NEWSYM offsetmcol, resd 1
|
|
NEWSYM offsetmshl, resd 1
|
|
NEWSYM offsetmptr, resd 1
|
|
NEWSYM offsetmtst, resd 1
|
|
NEWSYM offsetmclr, resd 1
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NEWSYM offsetcedi, resd 1
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SECTION .text
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;*******************************************************
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; Processes & Draws 16x16 tiles in 2, 4, & 8 bit mode
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;*******************************************************
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NEWSYM proc16x16
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; ax = # of rows down
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xor ebx,ebx
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mov ebx,eax
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and ebx,07h
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mov byte[a16x16yinc],0
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test eax,08h
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jz .noincb
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mov byte[a16x16yinc],1
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.noincb
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shr eax,4
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and eax,63
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cmp byte[edi+eax],0
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jne .nocachereq
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mov byte[edi+eax],1
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cmp byte[curcolor],2
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jne .no4b
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; cache 4-bit
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call cachetile4b16x16
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jmp .nocachereq
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.no4b
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cmp byte[curcolor],1
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je .2b
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; cache 8-bit
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call cachetile8b16x16
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jmp .nocachereq
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.2b
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; cache 2-bit
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call cachetile2b16x16
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.nocachereq
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test edx,0200h
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jz .tilexa
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test eax,20h
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jz .tileya
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; bgptrd/bgptrc
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mov ecx,[bgptrd]
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mov [bgptrx1],ecx
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mov ecx,[bgptrc]
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mov [bgptrx2],ecx
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jmp .skiptile
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.tileya
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; bgptrb/bgptra
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mov ecx,[bgptrb]
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mov [bgptrx1],ecx
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mov ecx,[bgptr]
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mov [bgptrx2],ecx
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jmp .skiptile
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.tilexa
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test ax,20h
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jz .tileya2
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; bgptrc/bgptrd
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mov ecx,[bgptrc]
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mov [bgptrx1],ecx
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mov ecx,[bgptrd]
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mov [bgptrx2],ecx
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jmp .skiptile
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.tileya2
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; bgptra/bgptrb
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mov ecx,[bgptr]
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mov [bgptrx1],ecx
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mov ecx,[bgptrb]
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mov [bgptrx2],ecx
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.skiptile
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and eax,1Fh
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shl ebx,3
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mov [yadder],ebx
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; set up edi to point to tile data
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mov edi,[vram]
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mov ebx,eax
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shl ebx,6
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mov ax,[bgptrx1]
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add edi,ebx
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mov [temptile],edi
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add edi,eax
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; dx = # of columns right
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; cx = bgxlim
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mov eax,edx
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mov byte[a16x16xinc],0
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test edx,08h
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jz .noincd
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mov byte[a16x16xinc],1
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.noincd
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shr edx,4
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and edx,1Fh
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mov [temp],dl
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and eax,07h
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shl dl,1
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xor ebx,ebx
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add edi,edx
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mov esi,eax
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mov ebx,[tempcach]
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xor eax,eax
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mov edx,[temptile]
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mov ax,[bgptrx2]
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add edx,eax
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mov ecx,[yadder]
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mov eax,[temp]
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; fill up tempbuffer with pointer #s that point to cached video mem
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; to calculate pointer, get first byte
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; esi = pointer to video buffer
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; edi = pointer to tile data
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; ebx = cached memory
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; ecx = y adder
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; edx = secondary tile pointer
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; al = current x position
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ret
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NEWSYM draw16x16
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mov byte[drawn],0
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mov [temp],eax
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mov eax,esi
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mov [yadder],ecx
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mov [tempcach],ebx
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mov ebx,56
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sub ebx,ecx
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mov [yrevadder],ebx
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xor ebx,ebx
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mov bl,[curypos]
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mov [temptile],edx
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mov dword[bgofwptr],vcache2ba+262144
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mov dword[bgsubby],262144
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cmp dword[tempcach],vcache2ba+262144
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jb .nobit
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mov dword[bgofwptr],vcache4ba+131072
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mov dword[bgsubby],131072
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cmp dword[tempcach],vcache4ba+131072
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jb .nobit
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mov dword[bgofwptr],vcache8ba+65536
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mov dword[bgsubby],65536
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.nobit
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; set up y adders
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test byte[a16x16yinc],01h
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jz .noincrc
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mov word[.yadd],16
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mov word[.yflipadd],0
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jmp .yesincrc
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.noincrc
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mov word[.yadd],0
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mov word[.yflipadd],16
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.yesincrc
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; esi = pointer to video buffer
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mov esi,[cwinptr]
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sub esi,eax
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mov [winptrref],esi
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mov esi,[curvidoffset]
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sub esi,eax ; esi = [vidbuffer] + curypos * 288 + 16 - HOfs
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cmp byte[curmosaicsz],1
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je .nomosaic
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mov esi,xtravbuf+16
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mov ecx,64
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.clearnext
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mov dword[esi],0
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add esi,4
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dec ecx
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jnz .clearnext
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mov esi,xtravbuf+16
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sub esi,eax
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.nomosaic
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cmp byte[curmosaicsz],1
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jne .domosaic
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cmp byte[winon],0
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jne near draw16x16winon
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.domosaic
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mov ch,33
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mov dl,[temp]
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.loopa
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mov ax,[edi]
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mov dh,ah
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xor byte[a16x16xinc],1
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test dh,40h
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jnz .noxflip
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test byte[a16x16xinc],01h
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jnz .noincr2
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inc ax
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add edi,2
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.noincr2
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jmp .yesxflip
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.noxflip
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test byte[a16x16xinc],01h
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jnz .noincr
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add edi,2
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jmp .yesincr
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.noincr
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inc ax
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.yesincr
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.yesxflip
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xor dh,[curbgpr]
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test dh,20h
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jnz near .hprior
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inc byte[drawn]
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test dh,80h
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jnz .noyflip
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add ax,word[.yadd]
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jmp .yesyflip
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.noyflip
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add ax,word[.yflipadd]
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.yesyflip
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and ax,03FFh ; filter out tile #
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mov ebx,[tempcach]
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shl ax,6
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add ebx,eax
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cmp ebx,[bgofwptr]
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jb .noclip
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sub ebx,[bgsubby]
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.noclip
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test dh,80h
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jz .normadd
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add ebx,[yrevadder]
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jmp .skipadd
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.normadd
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add ebx,[yadder]
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.skipadd
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test dh,40h
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jnz near .rloop
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; Begin Normal Loop
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mov cl,[bshifter]
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and dh,1Ch
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mov eax,[ebx]
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shl dh,cl ; process palette # (bits 10-12)
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add dh,[bgcoloradder]
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; Start fast loop
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cmp eax,0
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je .skiploop1
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drawpixel8b8x8 al, .loopd1, 0
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drawpixel8b8x8 ah, .loopd2, 1
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shr eax,16
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drawpixel8b8x8 al, .loopd3, 2
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drawpixel8b8x8 ah, .loopd4, 3
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.skiploop1
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mov eax,[ebx+4]
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cmp eax,0
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je .skiploop2
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drawpixel8b8x8 al, .loopd5, 4
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drawpixel8b8x8 ah, .loopd6, 5
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shr eax,16
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drawpixel8b8x8 al, .loopd7, 6
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drawpixel8b8x8 ah, .loopd8, 7
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.skiploop2
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.hprior
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add esi,8
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test byte[a16x16xinc],01h
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jnz .noincrb2
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inc dl
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.noincrb2
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cmp dl,20h
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jne .loopc2
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xor dl,dl
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mov edi,[temptile]
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.loopc2
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dec ch
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jnz near .loopa
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mov dh,byte[curmosaicsz]
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cmp dh,1
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jne near domosaic
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ret
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; reversed loop
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.rloop
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mov cl,[bshifter]
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and dh,1Ch
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mov eax,[ebx]
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shl dh,cl ; process palette # (bits 10-12)
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add dh,[bgcoloradder]
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; Start fast loop
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cmp eax,0
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je .skiploop1b
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drawpixel8b8x8 al, .loopd1b, 7
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drawpixel8b8x8 ah, .loopd2b, 6
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shr eax,16
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drawpixel8b8x8 al, .loopd3b, 5
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drawpixel8b8x8 ah, .loopd4b, 4
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.skiploop1b
|
|
mov eax,[ebx+4]
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cmp eax,0
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je .skiploop2b
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drawpixel8b8x8 al, .loopd5b, 3
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drawpixel8b8x8 ah, .loopd6b, 2
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|
shr eax,16
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drawpixel8b8x8 al, .loopd7b, 1
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drawpixel8b8x8 ah, .loopd8b, 0
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.skiploop2b
|
|
add esi,8
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|
test byte[a16x16xinc],01h
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|
jnz .noincrb
|
|
inc dl
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.noincrb
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cmp dl,20h
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jne .loopc
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xor dl,dl
|
|
mov edi,[temptile]
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|
.loopc
|
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dec ch
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jnz near .loopa
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mov dh,byte[curmosaicsz]
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cmp dh,1
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jne near domosaic
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ret
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SECTION .bss
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.yadd resw 1
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.yflipadd resw 1
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SECTION .text
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NEWSYM draw16x16winon
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.domosaic
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mov ch,33
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mov ebp,[winptrref]
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mov dl,[temp]
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.loopa
|
|
mov ax,[edi]
|
|
mov dh,ah
|
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xor byte[a16x16xinc],1
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|
|
|
test dh,40h
|
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jnz .noxflip
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test byte[a16x16xinc],01h
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|
jnz .noincr2
|
|
inc ax
|
|
add edi,2
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|
.noincr2
|
|
jmp .yesxflip
|
|
.noxflip
|
|
test byte[a16x16xinc],01h
|
|
jnz .noincr
|
|
add edi,2
|
|
jmp .yesincr
|
|
.noincr
|
|
inc ax
|
|
.yesincr
|
|
.yesxflip
|
|
xor dh,[curbgpr]
|
|
test dh,20h
|
|
jnz near .hprior
|
|
inc byte[drawn]
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|
|
|
test dh,80h
|
|
jnz .noyflip
|
|
add ax,word[draw16x16.yadd]
|
|
jmp .yesyflip
|
|
.noyflip
|
|
add ax,word[draw16x16.yflipadd]
|
|
.yesyflip
|
|
|
|
and ax,03FFh ; filter out tile #
|
|
mov ebx,[tempcach]
|
|
shl ax,6
|
|
add ebx,eax
|
|
cmp ebx,[bgofwptr]
|
|
jb .noclip
|
|
sub ebx,[bgsubby]
|
|
.noclip
|
|
test dh,80h
|
|
jz .normadd
|
|
add ebx,[yrevadder]
|
|
jmp .skipadd
|
|
.normadd
|
|
add ebx,[yadder]
|
|
.skipadd
|
|
test dh,40h
|
|
jnz near .rloop
|
|
|
|
; Begin Normal Loop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
cmp eax,0
|
|
je .skiploop1
|
|
drawpixel8b8x8win al, .loopd1, 0
|
|
drawpixel8b8x8win ah, .loopd2, 1
|
|
shr eax,16
|
|
drawpixel8b8x8win al, .loopd3, 2
|
|
drawpixel8b8x8win ah, .loopd4, 3
|
|
.skiploop1
|
|
mov eax,[ebx+4]
|
|
cmp eax,0
|
|
je .skiploop2
|
|
drawpixel8b8x8win al, .loopd5, 4
|
|
drawpixel8b8x8win ah, .loopd6, 5
|
|
shr eax,16
|
|
drawpixel8b8x8win al, .loopd7, 6
|
|
drawpixel8b8x8win ah, .loopd8, 7
|
|
.skiploop2
|
|
.hprior
|
|
add ebp,8
|
|
add esi,8
|
|
test byte[a16x16xinc],01h
|
|
jnz .noincrb2
|
|
inc dl
|
|
.noincrb2
|
|
cmp dl,20h
|
|
jne .loopc2
|
|
xor dl,dl
|
|
mov edi,[temptile]
|
|
.loopc2
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
; reversed loop
|
|
.rloop
|
|
mov cl,[bshifter]
|
|
and dh,1Ch
|
|
mov eax,[ebx]
|
|
shl dh,cl ; process palette # (bits 10-12)
|
|
add dh,[bgcoloradder]
|
|
; Start fast loop
|
|
cmp eax,0
|
|
je .skiploop1b
|
|
drawpixel8b8x8win al, .loopd1b, 7
|
|
drawpixel8b8x8win ah, .loopd2b, 6
|
|
shr eax,16
|
|
drawpixel8b8x8win al, .loopd3b, 5
|
|
drawpixel8b8x8win ah, .loopd4b, 4
|
|
.skiploop1b
|
|
mov eax,[ebx+4]
|
|
cmp eax,0
|
|
je .skiploop2b
|
|
drawpixel8b8x8win al, .loopd5b, 3
|
|
drawpixel8b8x8win ah, .loopd6b, 2
|
|
shr eax,16
|
|
drawpixel8b8x8win al, .loopd7b, 1
|
|
drawpixel8b8x8win ah, .loopd8b, 0
|
|
.skiploop2b
|
|
add ebp,8
|
|
add esi,8
|
|
test byte[a16x16xinc],01h
|
|
jnz .noincrb
|
|
inc dl
|
|
.noincrb
|
|
cmp dl,20h
|
|
jne .loopc
|
|
xor dl,dl
|
|
mov edi,[temptile]
|
|
.loopc
|
|
dec ch
|
|
jnz near .loopa
|
|
ret
|
|
|
|
SECTION .bss
|
|
NEWSYM temp, resb 1
|
|
NEWSYM bshifter, resb 1
|
|
NEWSYM a16x16xinc, resb 1
|
|
NEWSYM a16x16yinc, resb 1
|
|
SECTION .text
|