newgfx2.mac

linux下的任天堂模拟器代码。供大家参考。

;Copyright (C) 1997-2007 ZSNES Team ( zsKnight, _Demo_, pagefault, Nach )
;
;http://www.zsnes.com
;http://sourceforge.net/projects/zsnes
;https://zsnes.bountysource.com
;
;This program is free software; you can redistribute it and/or
;modify it under the terms of the GNU General Public License
;version 2 as published by the Free Software Foundation.
;
;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.



; Finish up parttile

%macro drawlineng16x8 8
    ; tile value : bit 15 = flipy, bit 14 = flipx, bit 13 = priority value
    ;              bit 10-12 = palette, 0-9=tile#
    mov ebx,[cbgval]
    mov dl,ch
    inc dword[bg1drwng+ebx*4]
    and ecx,3FFh
    and edx,1Fh
    add ecx,[ngptrdat2]
    add cx,[taddnfy16x16]
    test dword[vrama+eax],8000h
    jz %%noflipy
    add cx,[taddfy16x16]
%%noflipy
    test dword[vrama+eax],4000h
    jz %%noflipx
    inc cx
%%noflipx
%%nexttile
    push ecx
    push edx
    mov edx,[%6+edx*4]
    %7
    jnz near %%docache
%%returnfromcache
    cmp byte[%1+ecx],2
    je near %%done
    cmp byte[%1+ecx],0
    je near %%parttile
    %2
    ; start drawing from ecx
    test dword[vrama+eax],8000h
    jnz near %%flipyfull
    add ecx,[yposng]
    test dword[vrama+eax],4000h
    jnz near %%flipxfull
    mov ebx,[ecx]
    add ebx,edx
    mov [edi],bl
    mov [edi+75036],bh
    shr ebx,16
    mov [edi+1],bl
    mov [edi+75037],bh
    mov ebx,[ecx+4]
    add ebx,edx
    mov [edi+2],bl
    mov [edi+75038],bh
    shr ebx,16
    mov [edi+3],bl
    mov [edi+75039],bh
    jmp %%done
%%flipxfull
    mov ebx,[ecx+4]
    bswap ebx
    add ebx,edx
    mov [edi],bl
    mov [edi+75036],bh
    shr ebx,16
    mov [edi+1],bl
    mov [edi+75037],bh
    mov ebx,[ecx]
    bswap ebx
    add ebx,edx
    mov [edi+2],bl
    mov [edi+75038],bh
    shr ebx,16
    mov [edi+3],bl
    mov [edi+75039],bh
    jmp %%done
%%flipyfull
    add ecx,[flipyposng]
    test word[vrama+eax],4000h
    jnz near %%flipxyfull
    mov ebx,[ecx]
    add ebx,edx
    mov [edi],bl
    mov [edi+75036],bh
    shr ebx,16
    mov [edi+1],bl
    mov [edi+75037],bh
    mov ebx,[ecx+4]
    add ebx,edx
    mov [edi+2],bl
    mov [edi+75038],bh
    shr ebx,16
    mov [edi+3],bl
    mov [edi+75039],bh
    jmp %%done
%%flipxyfull
    mov ebx,[ecx+4]
    bswap ebx
    add ebx,edx
    mov [edi],bl
    mov [edi+75036],bh
    shr ebx,16
    mov [edi+1],bl
    mov [edi+75037],bh
    mov ebx,[ecx]
    bswap ebx
    add ebx,edx
    mov [edi+2],bl
    mov [edi+75038],bh
    shr ebx,16
    mov [edi+3],bl
    mov [edi+75039],bh
    jmp %%done
%%parttile
    %2
    ; start drawing from ecx to edi
    test word[vrama+eax],8000h
    jnz near %%flipypart
    add ecx,[yposng]
    test word[vrama+eax],4000h
    jnz near %%flipxpart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawd
    add ebx,edx
    test bl,%8
    jz %%drawa
    mov [edi],bl
%%drawa
    test bh,%8
    jz %%drawb
    mov [edi+75036],bh
%%drawb
    shr ebx,16
    test bl,%8
    jz %%drawc
    mov [edi+1],bl
%%drawc
    test bh,%8
    jz %%drawd
    mov [edi+75037],bh
%%drawd
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2
    add ebx,edx
    test bl,%8
    jz %%drawa2
    mov [edi+2],bl
%%drawa2
    test bh,%8
    jz %%drawb2
    mov [edi+75038],bh
%%drawb2
    shr ebx,16
    test bl,%8
    jz %%drawc2
    mov [edi+3],bl
%%drawc2
    test bh,%8
    jz %%drawd2
    mov [edi+75039],bh
%%drawd2
    jmp %%done

%%flipxpart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdf
    add ebx,edx
    test bl,%8
    jz %%drawaf
    mov [edi+75039],bl
%%drawaf
    test bh,%8
    jz %%drawbf
    mov [edi+3],bh
%%drawbf
    shr ebx,16
    test bl,%8
    jz %%drawcf
    mov [edi+75038],bl
%%drawcf
    test bh,%8
    jz %%drawdf
    mov [edi+2],bh
%%drawdf
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2f
    add ebx,edx
    test bl,%8
    jz %%drawa2f
    mov [edi+75037],bl
%%drawa2f
    test bh,%8
    jz %%drawb2f
    mov [edi+1],bh
%%drawb2f
    shr ebx,16
    test bl,%8
    jz %%drawc2f
    mov [edi+75036],bl
%%drawc2f
    test bh,%8
    jz %%drawd2f
    mov [edi],bh
%%drawd2f
    jmp %%done

%%flipypart
    add ecx,[flipyposng]
    test word[vrama+eax],4000h
    jnz near %%flipxypart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdm
    add ebx,edx
    test bl,%8
    jz %%drawam
    mov [edi],bl
%%drawam
    test bh,%8
    jz %%drawbm
    mov [edi+75036],bh
%%drawbm
    shr ebx,16
    test bl,%8
    jz %%drawcm
    mov [edi+1],bl
%%drawcm
    test bh,%8
    jz %%drawdm
    mov [edi+75037],bh
%%drawdm
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2m
    add ebx,edx
    test bl,%8
    jz %%drawa2m
    mov [edi+2],bl
%%drawa2m
    test bh,%8
    jz %%drawb2m
    mov [edi+75038],bh
%%drawb2m
    shr ebx,16
    test bl,%8
    jz %%drawc2m
    mov [edi+3],bl
%%drawc2m
    test bh,%8
    jz %%drawd2m
    mov [edi+75039],bh
%%drawd2m
    jmp %%done

%%flipxypart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdfm
    add ebx,edx
    test bl,%8
    jz %%drawafm
    mov [edi+75039],bl
%%drawafm
    test bh,%8
    jz %%drawbfm
    mov [edi+3],bh
%%drawbfm
    shr ebx,16
    test bl,%8
    jz %%drawcfm
    mov [edi+75038],bl
%%drawcfm
    test bh,%8
    jz %%drawdfm
    mov [edi+2],bh
%%drawdfm
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2fm
    add ebx,edx
    test bl,%8
    jz %%drawa2fm
    mov [edi+75037],bl
%%drawa2fm
    test bh,%8
    jz %%drawb2fm
    mov [edi+1],bh
%%drawb2fm
    shr ebx,16
    test bl,%8
    jz %%drawc2fm
    mov [edi+75036],bl
%%drawc2fm
    test bh,%8
    jz %%drawd2fm
    mov [edi],bh
%%drawd2fm
%%done
    pop edx
    pop ecx
    inc cx
    test dword[vrama+eax],4000h
    jz %%noflipxb
    sub cx,2
%%noflipxb
    add edi,4
    xor dword[switch16x16],1
    jnz near %%nexttile
%%ntile
    mov ebx,[cbgval]
    add ax,2
    inc dword[bg1totng+ebx*4]
    test eax,03Fh
    jz %%tileadd
%%next
    dec byte[tleftn]
    jnz near %4
    pop ebx
    cmp byte[curmosaicsz],1
    jne near domosaicng
    ret
%5
    add edi,8
    jmp %%ntile
%%docache
    call %3
    jmp %%returnfromcache
%%tileadd
    add ax,[bgtxadd]
    jmp %%next
%endmacro

%macro drawlinengom2 9
    ; tile value : bit 15 = flipy, bit 14 = flipx, bit 13 = priority value
    ;              bit 10-12 = palette, 0-9=tile#
    mov dl,ch
    inc dword[bg1drwng+%9*4]
    and ecx,3FFh
    and edx,1Fh
    add ecx,[ngptrdat2]
    mov edx,[%6+edx*4]
    %7
    jnz near %%docache
%%returnfromcache
    cmp byte[%1+ecx],2
    je near %5
    cmp byte[%1+ecx],0
    je near %%parttile
    %2
    ; start drawing from ecx
    test dword[vrama+eax],8000h
    jnz near %%flipyfull
    add ecx,[yposng]
    test dword[vrama+eax],4000h
    jnz near %%flipxfull
    mov ebx,[ecx]
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx+4]
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%flipxfull
    mov ebx,[ecx+4]
    bswap ebx
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx]
    bswap ebx
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%flipyfull
    add ecx,[flipyposng]
    test word[vrama+eax],4000h
    jnz near %%flipxyfull
    mov ebx,[ecx]
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx+4]
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%flipxyfull
    mov ebx,[ecx+4]
    bswap ebx
    add ebx,edx
    mov [edi],ebx
    mov ebx,[ecx]
    bswap ebx
    add ebx,edx
    mov [edi+4],ebx
    jmp %5
%%parttile
    %2
    ; start drawing from ecx to edi
    test word[vrama+eax],8000h
    jnz near %%flipypart
    add ecx,[yposng]
    test word[vrama+eax],4000h
    jnz near %%flipxpart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawd
    add ebx,edx
    test bl,%8
    jz %%drawa
    mov [edi],bl
%%drawa
    test bh,%8
    jz %%drawb
    mov [edi+1],bh
%%drawb
    shr ebx,16
    test bl,%8
    jz %%drawc
    mov [edi+2],bl
%%drawc
    test bh,%8
    jz %%drawd
    mov [edi+3],bh
%%drawd
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2
    add ebx,edx
    test bl,%8
    jz %%drawa2
    mov [edi+4],bl
%%drawa2
    test bh,%8
    jz %%drawb2
    mov [edi+5],bh
%%drawb2
    shr ebx,16
    test bl,%8
    jz %%drawc2
    mov [edi+6],bl
%%drawc2
    test bh,%8
    jz %%drawd2
    mov [edi+7],bh
%%drawd2
    jmp %5

%%flipxpart
    mov ebx,[ecx]
    or ebx,ebx
    jz %%drawdf
    add ebx,edx
    test bl,%8
    jz %%drawaf
    mov [edi+7],bl
%%drawaf
    test bh,%8
    jz %%drawbf
    mov [edi+6],bh
%%drawbf
    shr ebx,16
    test bl,%8
    jz %%drawcf
    mov [edi+5],bl
%%drawcf
    test bh,%8
    jz %%drawdf
    mov [edi+4],bh
%%drawdf
    mov ebx,[ecx+4]
    or ebx,ebx
    jz %%drawd2f
    add ebx,edx
    test bl,%8
    jz %%drawa2f
    mov [edi+3],bl
%%drawa2f
    test bh,%8
    jz %%drawb2f
    mov [edi+2],bh
%%drawb2f
    shr ebx,16
    test bl,%8
    jz %%drawc2f
    mov [edi+1],bl
%%drawc2f
    test bh,%8