688 lines
15 KiB
NASM
688 lines
15 KiB
NASM
;Copyright (C) 1997-2006 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 mode7tab,winptrref,nglogicval,winlogicaval,curmosaicsz,curvidoffset
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EXTSYM cwinptr,mode7A,mode7B,mode7C,mode7D,mode7X0,mode7Y0,mode7set,vram,vrama
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EXTSYM xtravbuf,ngwleft,ngwleftb,mode7xpos,mode7ypos,mode7xrpos,mode7yrpos
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EXTSYM mode7xadder,mode7yadder,mode7hr,dcolortab,UnusedBitXor,UnusedBit,scrndis
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EXTSYM vidbright,prevbrightdc,Gendcolortable,mode7ab,mode7cd,BGMA,BG1SXl,BG1SYl
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%include "video/mode716.mac"
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;*******************************************************
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; Processes & Draws Mode 7
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;*******************************************************
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%macro Mode7Normal 0
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or dl,dl
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jz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Normalnt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Normalt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[ebp+edx*2+512]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Normalmsnt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi],dx
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Normalmst 0
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or dl,dl
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jz %%nodrawb
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mov dx,[ebp+edx*2+512]
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mov [esi],dx
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and dx,[UnusedBitXor]
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Normalsnt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Normalst 0
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or dl,dl
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jz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Direct 0
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or dl,dl
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jz %%nodrawb
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mov dx,[dcolortab+edx*4]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Directnt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[dcolortab+edx*4]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Directt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[dcolortab+edx*4]
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or dx,[UnusedBit]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Directmsnt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[dcolortab+edx*4]
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mov [esi],dx
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Directmst 0
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or dl,dl
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jz %%nodrawb
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mov dx,[dcolortab+edx*4]
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mov [esi+75036*2],dx
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or dx,[UnusedBit]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Directsnt 0
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or dl,dl
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jz %%nodrawb
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mov dx,[dcolortab+edx*4]
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7Directst 0
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or dl,dl
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jz %%nodrawb
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mov dx,[dcolortab+edx*4]
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7ExtBG 0
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mov [esi+75036*8],dl
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or dl,dl
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jz %%nodrawb
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test dl,80h
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jnz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7ExtBGnt 0
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mov [esi+75036*8],dl
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or dl,dl
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jz %%nodrawb
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test dl,80h
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jnz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7ExtBGt 0
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mov [esi+75036*8],dl
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or dl,dl
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jz %%nodrawb
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test dl,80h
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jnz %%nodrawb
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mov dx,[ebp+edx*2+512]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7ExtBGmsnt 0
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mov [esi+75036*8],dl
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or dl,dl
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jz %%nodrawb
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test dl,80h
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jnz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi],dx
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7ExtBGmst 0
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mov [esi+75036*8],dl
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or dl,dl
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jz %%nodrawb
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test dl,80h
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jnz %%nodrawb
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mov dx,[ebp+edx*2+512]
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mov [esi+75036*2],dx
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or dx,[UnusedBit]
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mov [esi],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7ExtBGsnt 0
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mov [esi+75036*8],dl
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or dl,dl
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jz %%nodrawb
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test dl,80h
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jnz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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%macro Mode7ExtBGst 0
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mov [esi+75036*8],dl
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or dl,dl
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jz %%nodrawb
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test dl,80h
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jnz %%nodrawb
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mov dx,[ebp+edx*2]
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mov [esi+75036*2],dx
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xor edx,edx
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%%nodrawb
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add esi,2
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%endmacro
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SECTION .text
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NEWSYM drawmode7win16b
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test byte[scrndis],1
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jz .notdisabled
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ret
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.notdisabled
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CheckTransparency 01h,drawmode7win16bt
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normal
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Mode7NonMainSub Mode7Normal
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drawmode7win16bt
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test byte[scadtng+ebx],1h
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jz near drawmode7win16bnt
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawmode716bmst
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Mode7NonMainSub Mode7Normalt
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drawmode716bmst:
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mov edi,[CMainWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmt
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bst
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drawmode7w16bmst
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Mode7NonMainSub Mode7Normalmst
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drawmode7w16bmt
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmst
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Mode7MainSub Mode7Normalmst,Mode7Normalst
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drawmode7w16bst
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Mode7MainSub Mode7Normalmst,Mode7Normalt
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drawmode7win16bnt:
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawsprngm716bmsnt
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Mode7NonMainSub Mode7Normalnt
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drawsprngm716bmsnt:
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cmp dword[ngwinen],0
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je drawmode7w16bmsnt
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mov edi,[CMainWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmnt
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bsnt
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drawmode7w16bmsnt
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Mode7NonMainSub Mode7Normalmsnt
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drawmode7w16bmnt
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmsnt
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Mode7MainSub Mode7Normalmsnt,Mode7Normalsnt
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drawmode7w16bsnt
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Mode7MainSub Mode7Normalmsnt,Mode7Normalnt
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NEWSYM drawmode7win16bd
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test byte[scrndis],1
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jz .notdisabled
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ret
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.notdisabled
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mov bl,[vidbright]
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cmp bl,[prevbrightdc]
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je .nodcchange
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mov [prevbrightdc],bl
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call Gendcolortable
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.nodcchange
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CheckTransparency 01h,drawmode7win16btd
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Mode7NonMainSub Mode7Direct
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drawmode7win16btd
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test byte[scadtng+ebx],1h
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jz near drawmode7win16bntd
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawmode716bmstd
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Mode7NonMainSub Mode7Directt
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drawmode716bmstd:
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mov edi,[CMainWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmtd
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bstd
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drawmode7w16bmstd
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Mode7NonMainSub Mode7Directmst
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drawmode7w16bmtd
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmstd
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Mode7MainSub Mode7Directmst,Mode7Directst
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drawmode7w16bstd
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Mode7MainSub Mode7Directmst,Mode7Directt
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drawmode7win16bntd:
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawsprngm716bmsntd
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Mode7NonMainSub Mode7Directnt
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drawsprngm716bmsntd:
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cmp dword[ngwinen],0
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je drawmode7w16bmsntd
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mov edi,[CMainWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmntd
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bsntd
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drawmode7w16bmsntd
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Mode7NonMainSub Mode7Directmsnt
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drawmode7w16bmntd
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmsntd
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Mode7MainSub Mode7Directmsnt,Mode7Directsnt
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drawmode7w16bsntd
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Mode7MainSub Mode7Directmsnt,Mode7Directnt
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NEWSYM drawmode7ngextbg16b
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test byte[scrndis],1
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jz .notdisabled
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ret
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.notdisabled
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mov byte[curmosaicsz],1
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push ecx
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mov esi,[curvidoffset] ; esi = [vidbuffer] + curypos * 288 + 16
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mov ecx,256
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.loop
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mov byte[esi+75036*8],0
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add esi,2
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dec ecx
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jnz .loop
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pop ecx
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cmp byte[mode7hr+ebx],1
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; je near drawmode7winextbghr16e
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CheckTransparency 02h,drawmode7win16bte
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mov esi,[cwinptr]
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mov [winptrref],esi
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mov esi,[curvidoffset]
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Mode7NonMainSube Mode7ExtBG
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drawmode7win16bte
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test byte[scadtng+ebx],1h
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jz near drawmode7win16bnte
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawmode716bmste
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Mode7NonMainSube Mode7ExtBGt
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drawmode716bmste:
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mov edi,[CMainWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmte
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bste
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drawmode7w16bmste
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Mode7NonMainSube Mode7ExtBGmst
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drawmode7w16bmte
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmste
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Mode7MainSube Mode7ExtBGmst,Mode7ExtBGst
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drawmode7w16bste
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Mode7MainSube Mode7ExtBGmst,Mode7ExtBGt
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drawmode7win16bnte:
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawsprngm716bmsnte
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Mode7NonMainSube Mode7ExtBGnt
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drawsprngm716bmsnte:
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cmp dword[ngwinen],0
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je drawmode7w16bmsnte
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mov edi,[CMainWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmnte
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bsnte
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drawmode7w16bmsnte
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Mode7NonMainSube Mode7ExtBGmsnt
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drawmode7w16bmnte
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mov edi,[CSubWinScr]
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cmp byte[edi+ebx],0
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jne near drawmode7w16bmsnte
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Mode7MainSube Mode7ExtBGmsnt,Mode7ExtBGsnt
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drawmode7w16bsnte
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Mode7MainSube Mode7ExtBGmsnt,Mode7ExtBGnt
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%macro ExtBG2 1
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mov esi,[curvidoffset] ; esi = [vidbuffer] + curypos * 288 + 16
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mov ecx,256
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xor eax,eax
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.loop
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mov al,[esi+75036*8]
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test al,80h
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jz .nopr2
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and al,7Fh
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%1
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.nopr2
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add esi,2
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dec ecx
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jnz .loop
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xor eax,eax
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ret
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%endmacro
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%macro ExtBGNormal 0
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mov dx,[ebp+eax*2]
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mov [esi],dx
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%endmacro
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%macro ExtBGNormalt 0
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mov dx,[ebp+eax*2+512]
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mov [esi],dx
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%endmacro
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%macro ExtBGNormalnt 0
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mov dx,[ebp+eax*2]
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mov [esi],dx
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%endmacro
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%macro ExtBGNormalst 0
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mov dx,[ebp+eax*2]
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mov [esi+75036*2],dx
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%endmacro
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%macro ExtBGNormalsnt 0
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mov dx,[ebp+eax*2]
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mov [esi+75036*2],dx
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%endmacro
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%macro ExtBGNormalmst 0
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mov dx,[ebp+eax*2+512]
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mov [esi],dx
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and dx,[UnusedBitXor]
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mov [esi+75036*2],dx
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%endmacro
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%macro ExtBGNormalmsnt 0
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mov dx,[ebp+eax*2]
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mov [esi],dx
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mov [esi+75036*2],dx
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%endmacro
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NEWSYM drawmode7ngextbg216b
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test byte[scrndis],1
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jz .notdisabled
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ret
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.notdisabled
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cmp byte[mode7hr+ebx],1
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; je near drawmode7winextbg2hr16b
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; esi = pointer to video buffer
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CheckTransparency 01h,drawmode7ngextbg216bt
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test byte[FillSubScr+ebx],1
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jz .main
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test byte[BGMS1+ebx*2],01h
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jnz .main
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add esi,75036*2
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.main
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ExtBG2 ExtBGNormal
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drawmode7ngextbg216bt:
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test byte[scadtng+ebx],1h
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jz near drawmode7ngextbg216bnt
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawmode7ngextbg216bmst
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ExtBG2 ExtBGNormalt
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drawmode7ngextbg216bmst
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test byte[BGMS1+ebx*2],1h
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jz near drawmode7ngextbg216bst
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ExtBG2 ExtBGNormalmst
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drawmode7ngextbg216bst:
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ExtBG2 ExtBGNormalst
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drawmode7ngextbg216bnt:
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test byte[BGMS1+ebx*2+1],1h
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jnz near drawmode7ngextbg216bmsnt
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ExtBG2 ExtBGNormalnt
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drawmode7ngextbg216bmsnt
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test byte[BGMS1+ebx*2],1h
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jz near drawmode7ngextbg216bsnt
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ExtBG2 ExtBGNormalmsnt
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drawmode7ngextbg216bsnt:
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ExtBG2 ExtBGNormalsnt
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ALIGN32
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SECTION .bss
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mtemp resd 1 ; for byte move left
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mmode7xpos resd 1 ; x position
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mtempa2 resd 1 ; keep this blank!
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mmode7xrpos resd 1 ; x position
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|
mtempa resd 1 ; keep this blank!
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|
mmode7ypos resd 1 ; y position
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|
mtempb2 resd 1 ; keep this blank!
|
|
mmode7yrpos resd 1 ; y position
|
|
mtempb resd 1 ; keep this blank!
|
|
mmode7xadder resd 1 ; number to add for x
|
|
mtempc2 resd 1 ; keep this blank!
|
|
mmode7xadd2 resd 1 ; number to add for x
|
|
mtempc resd 1 ; keep this blank!
|
|
mmode7yadder resd 1 ; number to add for y
|
|
mtempd2 resd 1 ; keep this blank!
|
|
mmode7yadd2 resd 1 ; number to add for y
|
|
mtempd resd 1 ; keep this blank!
|
|
mmode7ptr resd 1 ; pointer value
|
|
mmode7xinc resd 1 ; number to add for x
|
|
mmode7xincc resd 1 ; range check for x
|
|
mmode7yinc resd 1 ; number to add for y
|
|
mmode7xsloc resd 1 ; which screen x
|
|
mmode7ysloc resd 1 ; which screen y
|
|
mmode7xsrl resd 1 ; which relative screen x
|
|
mmode7ysrl resd 1 ; which relative screen y
|
|
mcxloc resw 1 ; cx location
|
|
mcyloc resw 1 ; cy location
|
|
M7HROn resd 1 ; High Resolution On
|
|
switchtorep3 resd 1
|
|
|
|
m7xaddof resd 1
|
|
m7xaddof2 resd 1
|
|
m7yaddof resd 1
|
|
m7yaddof2 resd 1
|
|
pixelsleft resd 1
|
|
mm7xaddof resd 1
|
|
mm7xaddof2 resd 1
|
|
mm7yaddof resd 1
|
|
mm7yaddof2 resd 1
|
|
SECTION .text
|
|
|
|
%macro newvaluepred 2
|
|
mov dx,[%1+ebx*4+8]
|
|
cmp dx,word[%1+ebx*4]
|
|
je %%nodivide
|
|
cmp byte[BGMA+ebx+2],7
|
|
je %%mode7scaleb
|
|
%%nodivide
|
|
movsx edx,word[%1+ebx*4+4]
|
|
movsx ecx,word[%1+ebx*4]
|
|
add ecx,edx
|
|
sar ecx,1
|
|
mov [%2],cx
|
|
jmp %%mode7scalend
|
|
%%mode7scaleb
|
|
mov esi,ebx
|
|
movsx ebx,word[%1+esi*4+8]
|
|
movsx edx,word[%1+esi*4]
|
|
sub ebx,edx
|
|
movsx ecx,word[%1+esi*4+4]
|
|
sub ecx,edx
|
|
mov eax,ecx
|
|
imul ecx
|
|
idiv ebx
|
|
add ax,word[%1+esi*4]
|
|
mov ebx,esi
|
|
mov [%2],ax
|
|
%%mode7scalend
|
|
%endmacro
|
|
|
|
CalculateNewValues:
|
|
; predict new values
|
|
push eax
|
|
push edx
|
|
push ebx
|
|
push esi
|
|
newvaluepred mode7ab,mode7A
|
|
newvaluepred mode7ab+2,mode7B
|
|
newvaluepred mode7cd,mode7C
|
|
newvaluepred mode7cd+2,mode7D
|
|
pop esi
|
|
pop ebx
|
|
pop edx
|
|
pop eax
|
|
|
|
mov ecx,edx
|
|
xor edx,edx
|
|
mov dx,[BG1SXl+ebx*2+2]
|
|
add edx,ecx
|
|
shr edx,1
|
|
|
|
mov ecx,eax
|
|
mov eax,ebx
|
|
inc eax
|
|
test byte[mode7set],02h
|
|
jz .noflip
|
|
mov eax,261
|
|
sub eax,ebx
|
|
.noflip
|
|
add ax,[BG1SYl+ebx*2+2]
|
|
add eax,ecx
|
|
sub ax,[ScrDispl]
|
|
sub ax,[ScrDispl]
|
|
ret
|
|
|
|
|
|
NEWSYM processmode7hires16b
|
|
cmp byte[BGMA+ebx+1],7
|
|
jne near .nogo
|
|
push esi
|
|
push ebx
|
|
call CalculateNewValues
|
|
add esi,75036*4
|
|
mov [curvidoffset],esi
|
|
mov dword[M7HROn],1
|
|
call drawmode7win16b
|
|
mov dword[M7HROn],0
|
|
pop ebx
|
|
pop esi
|
|
.nogo
|
|
ret
|
|
|
|
NEWSYM processmode7hires16bd
|
|
cmp byte[BGMA+ebx+1],7
|
|
jne near .nogo
|
|
push esi
|
|
push ebx
|
|
call CalculateNewValues
|
|
add esi,75036*4
|
|
mov [curvidoffset],esi
|
|
mov dword[M7HROn],1
|
|
call drawmode7win16bd
|
|
mov dword[M7HROn],0
|
|
pop ebx
|
|
pop esi
|
|
.nogo
|
|
ret
|