mode716.asm

十七种模拟器源代码 非常有用的作课程设计不可缺少的

;Copyright (C) 1997-2001 ZSNES Team ( [e-mail] / [e-mail] )
;
;This program is free software; you can redistribute it and/or
;modify it under the terms of the GNU General Public License
;as published by the Free Software Foundation; either
;version 2 of the License, or (at your option) any later
;version.
;
;This program is distributed in the hope that it will be useful,
;but WITHOUT ANY WARRANTY; without even the implied warranty of
;MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;GNU General Public License for more details.
;
;You should have received a copy of the GNU General Public License
;along with this program; if not, write to the Free Software
;Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

%include "macros.mac"

EXTSYM mode7tab,winptrref,nglogicval,winlogicaval
EXTSYM curmosaicsz,curvidoffset,cwinptr,domosaic,mode7A,mode7B
EXTSYM mode7C,mode7D,mode7X0,mode7Y0,mode7set,vram,vrama,winon,xtravbuf
EXTSYM ngwleft,ngwleftb,mode7xpos,mode7ypos,mode7xrpos,mode7yrpos
EXTSYM mode7xadder,mode7yadder,mode7hr,drawmode7winhr,dcolortab
EXTSYM UnusedBitXor,UnusedBit
EXTSYM scrndis
EXTSYM vidbright,prevbrightdc,Gendcolortable
EXTSYM mode7ab,mode7cd,BGMA
EXTSYM BG1SXl,BG1SYl
    EXTSYM processmode7hires

NEWSYM Mode716AsmStart
%include "video/mode716.mac"






;*******************************************************
; Processes & Draws Mode 7
;*******************************************************

%macro Mode7Normal 0
    or dl,dl
    jz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Normalnt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Normalt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[ebp+edx*2+512]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Normalmsnt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi],dx
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Normalmst 0
    or dl,dl
    jz %%nodrawb
    mov dx,[ebp+edx*2+512]
    mov [esi],dx
    and dx,[UnusedBitXor]
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Normalsnt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Normalst 0
    or dl,dl
    jz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Direct 0
    or dl,dl
    jz %%nodrawb
    mov dx,[dcolortab+edx*4]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Directnt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[dcolortab+edx*4]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Directt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[dcolortab+edx*4]
    or dx,[UnusedBit]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Directmsnt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[dcolortab+edx*4]
    mov [esi],dx
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Directmst 0
    or dl,dl
    jz %%nodrawb
    mov dx,[dcolortab+edx*4]
    mov [esi+75036*2],dx
    or dx,[UnusedBit]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Directsnt 0
    or dl,dl
    jz %%nodrawb
    mov dx,[dcolortab+edx*4]
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7Directst 0
    or dl,dl
    jz %%nodrawb
    mov dx,[dcolortab+edx*4]
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7ExtBG 0
    mov [esi+75036*8],dl
    or dl,dl
    jz %%nodrawb
    test dl,80h
    jnz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7ExtBGnt 0
    mov [esi+75036*8],dl
    or dl,dl
    jz %%nodrawb
    test dl,80h
    jnz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7ExtBGt 0
    mov [esi+75036*8],dl
    or dl,dl
    jz %%nodrawb
    test dl,80h
    jnz %%nodrawb
    mov dx,[ebp+edx*2+512]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7ExtBGmsnt 0
    mov [esi+75036*8],dl
    or dl,dl
    jz %%nodrawb
    test dl,80h
    jnz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi],dx
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7ExtBGmst 0
    mov [esi+75036*8],dl
    or dl,dl
    jz %%nodrawb
    test dl,80h
    jnz %%nodrawb
    mov dx,[ebp+edx*2+512]
    mov [esi+75036*2],dx
    or dx,[UnusedBit]
    mov [esi],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7ExtBGsnt 0
    mov [esi+75036*8],dl
    or dl,dl
    jz %%nodrawb
    test dl,80h
    jnz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

%macro Mode7ExtBGst 0
    mov [esi+75036*8],dl
    or dl,dl
    jz %%nodrawb
    test dl,80h
    jnz %%nodrawb
    mov dx,[ebp+edx*2]
    mov [esi+75036*2],dx
    xor edx,edx
%%nodrawb
    add esi,2
%endmacro

NEWSYM drawmode7win16b
    test byte[scrndis],1
    jz .notdisabled
    ret
.notdisabled
    CheckTransparency 01h,drawmode7win16bt
normal
    Mode7NonMainSub Mode7Normal
drawmode7win16bt
    test byte[scadtng+ebx],1h
    jz near drawmode7win16bnt
    test byte[BGMS1+ebx*2+1],1h
    jnz near drawmode716bmst
    Mode7NonMainSub Mode7Normalt
drawmode716bmst:
    mov edi,[CMainWinScr]
    cmp byte[edi+ebx],0
    jne near drawmode7w16bmt
    mov edi,[CSubWinScr]
    cmp byte[edi+ebx],0
    jne near drawmode7w16bst
drawmode7w16bmst
    Mode7NonMainSub Mode7Normalmst
drawmode7w16bmt
    mov edi,[CSubWinScr]
    cmp byte[edi+ebx],0
    jne near drawmode7w16bmst
    Mode7MainSub Mode7Normalmst,Mode7Normalst
drawmode7w16bst
    Mode7MainSub Mode7Normalmst,Mode7Normalt
drawmode7win16bnt:
    test byte[BGMS1+ebx*2+1],1h
    jnz near drawsprngm716bmsnt
    Mode7NonMainSub Mode7Normalnt
drawsprngm716bmsnt:
    cmp dword[ngwinen],0
    je drawmode7w16bmsnt
    mov edi,[CMainWinScr]
    cmp byte[edi+ebx],0
    jne near drawmode7w16bmnt
    mov edi,[CSubWinScr]
    cmp byte[edi+ebx],0
    jne near drawmode7w16bsnt
drawmode7w16bmsnt
    Mode7NonMainSub Mode7Normalmsnt
drawmode7w16bmnt
    mov edi,[CSubWinScr]
    cmp byte[edi+ebx],0
    jne near drawmode7w16bmsnt
    Mode7MainSub Mode7Normalmsnt,Mode7Normalsnt
drawmode7w16bsnt
    Mode7MainSub Mode7Normalmsnt,Mode7Normalnt

NEWSYM drawmode7win16bd
    test byte[scrndis],1
    jz .notdisabled
    ret
.notdisabled
    mov bl,[vidbright]
    cmp bl,[prevbrightdc]
    je .nodcchange
    mov [prevbrightdc],bl