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来自「linux下的任天堂模拟器代码。供大家参考。」· MAC 代码 · 共 890 行 · 第 1/2 页

;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 procpixels16x8 3
    mov bl,[esi+%2]
    mov cl,[esi+%1]
    add bl,dl
    add cl,dl
    mov bx,[eax+ebx*2]
    mov [edi+%3+75036*4],bx
    mov bx,[eax+ecx*2]
    mov [edi+%3],bx
    xor ebx,ebx
%endmacro

%macro procpixelst16x8 3
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2]
    mov [edi+%2],cx
%%nodraw
%endmacro

%macro procpixelstr16x8 3
    mov bl,[esi+%2]
    mov cl,[esi+%1]
    add bl,dl
    add cl,dl
    mov bx,[eax+ebx*2+512]
    mov [edi+%3+75036*4],bx
    mov bx,[eax+ecx*2+512]
    mov [edi+%3],bx
    xor ebx,ebx
%endmacro

%macro procpixelstt16x8 3
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2+512]
    mov [edi+%2],cx
%%nodraw
%endmacro

%macro procpixelsmst16x8 3
    mov bl,[esi+%2]
    mov cl,[esi+%1]
    add bl,dl
    add cl,dl
    mov bx,[eax+ebx*2+512]
    mov [edi+%3+75036*4],bx
    and ebx,[UnusedBitXor]
    mov [edi+%3+75036*6],bx
    mov bx,[eax+ecx*2+512]
    mov [edi+%3],bx
    and ebx,[UnusedBitXor]
    mov [edi+%3+75036*2],bx
    xor ebx,ebx
%endmacro

%macro procpixelstmst16x8 3
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2+512]
    mov [edi+%2],cx
    and cx,[UnusedBitXor]
    mov [edi+%2+75036*2],cx
%%nodraw
%endmacro

%macro procpixelsmsnt16x8 3
    mov bl,[esi+%2]
    mov cl,[esi+%1]
    add bl,dl
    add cl,dl
    mov bx,[eax+ebx*2]
    mov [edi+%3+75036*4],bx
    mov [edi+%3+75036*6],bx
    mov bx,[eax+ecx*2]
    mov [edi+%3],bx
    mov [edi+%3+75036*2],bx
    xor ebx,ebx
%endmacro

%macro procpixelstmsnt16x8 3
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2]
    mov [edi+%2],cx
    mov [edi+%2+75036*2],cx
%%nodraw
%endmacro

%macro procpixels16x8b 3
    mov bl,[esi+%2]
    add bl,dl
    mov cx,[eax+ebx*2]
    mov [edi+%3],cx
%endmacro

%macro procpixelst16x8b 3
  %if %2<8
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2]
    mov [edi+%2],cx
%%nodraw
  %endif
%endmacro

%macro procpixelstr16x8b 3
    mov bl,[esi+%2]
    add bl,dl
    mov cx,[eax+ebx*2+512]
    mov [edi+%3],cx
%endmacro

%macro procpixelstt16x8b 3
  %if %2<8
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2+512]
    mov [edi+%2],cx
%%nodraw
  %endif
%endmacro

%macro procpixelsmst16x8b 3
    mov bl,[esi+%2]
    add bl,dl
    mov cx,[eax+ebx*2+512]
    mov [edi+%3],cx
    and ecx,[UnusedBitXor]
    mov [edi+%3+75036*2],cx
%endmacro

%macro procpixelstmst16x8b 3
  %if %2<8
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2+512]
    mov [edi+%2],cx
    and cx,[UnusedBitXor]
    mov [edi+%2+75036*2],cx
%%nodraw
  %endif
%endmacro

%macro procpixelsmsnt16x8b 3
    mov bl,[esi+%2]
    add bl,dl
    mov cx,[eax+ebx*2]
    mov [edi+%3],cx
    mov [edi+%3+75036*2],cx
%endmacro

%macro procpixelstmsnt16x8b 3
  %if %2<8
    mov bl,[esi+%1]
    add bl,dl
    test bl,%3
    jz %%nodraw
    mov cx,[eax+ebx*2]
    mov [edi+%2],cx
    mov [edi+%2+75036*2],cx
%%nodraw
  %endif
%endmacro

%macro drawlineng16x816b 10
    ; 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
    jz %%notflipyfull
    add ecx,[flipyposng]
    jmp %%yesflipyfull
%%notflipyfull
    add ecx,[yposng]
%%yesflipyfull
    test dword[vrama+eax],4000h
    jnz near %%flipxfull
    push eax
    mov esi,ecx
    xor ecx,ecx
    xor ebx,ebx
    mov eax,[CPalPtrng]
    %9 0,1,0
    %9 2,3,2
    %9 4,5,4
    %9 6,7,6
    pop eax
    jmp %%done
%%flipxfull
    push eax
    mov esi,ecx
    xor ecx,ecx
    xor ebx,ebx
    mov eax,[CPalPtrng]
    %9 7,6,0
    %9 5,4,2
    %9 3,2,4
    %9 1,0,6
    pop eax
    jmp %%done
%%parttile
    %2
    ; start drawing from ecx to edi
    test dword[vrama+eax],8000h
    jz %%notflipypart
    add ecx,[flipyposng]
    jmp %%yesflipypart
%%notflipypart
    add ecx,[yposng]
%%yesflipypart
    test word[vrama+eax],4000h
    jnz near %%flipxpart
    push eax
    mov eax,[CPalPtrng]
    mov esi,ecx
    xor ebx,ebx
    %10 0,0,%8
    %10 1,0+75036*4,%8
    %10 2,2,%8
    %10 3,2+75036*4,%8
    %10 4,4,%8
    %10 5,4+75036*4,%8
    %10 6,6,%8
    %10 7,6+75036*4,%8
    pop eax
    jmp %%done
%%flipxpart
    push eax
    mov eax,[CPalPtrng]
    mov esi,ecx
    xor ebx,ebx
    %10 7,0,%8
    %10 6,0+75036*4,%8
    %10 5,2,%8
    %10 4,2+75036*4,%8
    %10 3,4,%8
    %10 2,4+75036*4,%8
    %10 1,6,%8
    %10 0,6+75036*4,%8
    pop eax
%%done
    pop edx
    pop ecx
    inc cx
    test dword[vrama+eax],4000h
    jz %%noflipxb
    sub cx,2
%%noflipxb
    add edi,8
    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 domosaicng16b
    ret
%5
    add edi,16
    jmp %%ntile
%%docache
    call %3
    jmp %%returnfromcache
%%tileadd
    add ax,[bgtxadd]
    jmp %%next
%endmacro

%macro drawlinengom216b 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
    jz %%notflipyfull
    add ecx,[flipyposng]
    jmp %%yesflipyfull
%%notflipyfull
    add ecx,[yposng]
%%yesflipyfull
    test dword[vrama+eax],4000h
    jnz near %%flipxfull
    push eax
    mov esi,ecx
    xor ecx,ecx
    xor ebx,ebx
    mov eax,[CPalPtrng]
    procpixels 0,1,0
    procpixels 2,3,4
    procpixels 4,5,8
    procpixels 6,7,12
    pop eax
    jmp %5
%%flipxfull
    push eax
    mov esi,ecx
    xor ecx,ecx
    xor ebx,ebx
    mov eax,[CPalPtrng]
    procpixels 7,6,0
    procpixels 5,4,4
    procpixels 3,2,8
    procpixels 1,0,12
    pop eax
    jmp %5
%%parttile
    %2
    ; start drawing from ecx to edi
    test dword[vrama+eax],8000h
    jz %%notflipypart
    add ecx,[flipyposng]
    jmp %%yesflipypart
%%notflipypart
    add ecx,[yposng]
%%yesflipypart

    test word[vrama+eax],4000h
    jnz near %%flipxpart
    push eax
    mov eax,[CPalPtrng]
    mov esi,ecx
    xor ebx,ebx
    procpixelst 0,0,%8
    procpixelst 1,2,%8
    procpixelst 2,4,%8
    procpixelst 3,6,%8
    procpixelst 4,8,%8
    procpixelst 5,10,%8
    procpixelst 6,12,%8
    procpixelst 7,14,%8
    pop eax
    jmp %5

%%flipxpart
    push eax
    mov eax,[CPalPtrng]
    mov esi,ecx
    xor ebx,ebx
    procpixelst 7,0,%8
    procpixelst 6,2,%8
    procpixelst 5,4,%8
    procpixelst 4,6,%8
    procpixelst 3,8,%8
    procpixelst 2,10,%8
    procpixelst 1,12,%8
    procpixelst 0,14,%8
    pop eax
%5
    inc dword[bg1totng+%9*4]
    add word[ofsmmptr],2
    add word[ofsmtptr],2

    mov ax,[ofsmmptr]
    mov ebx,[yposngom]
    mov edx,[flipyposngom]
    mov [yposng],ebx
    mov [flipyposng],edx
    add edi,16
    test eax,03Fh
    jz near %%tileadd