994 lines
22 KiB
NASM
994 lines
22 KiB
NASM
;Copyright (C) 1997-2001 ZSNES Team ( zsknight@zsnes.com / _demo_@zsnes.com )
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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 coladdr,curmosaicsz,curvidoffset,domosaic16b,mode7A,drawmode7dcolor
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EXTSYM mode7B,mode7C,mode7D,mode7X0,mode7Y0,mode7set,mode7tab
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EXTSYM pal16b,pal16bcl,pal16bxcl,scaddtype,scrnon,transpbuf
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EXTSYM vesa2_clbit,vram,vrama,winon,xtravbuf,winptrref,scaddset
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EXTSYM fulladdtab
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EXTSYM cwinptr
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;*******************************************************
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; Processes & Draws Mode 7
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;*******************************************************
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%macro mode7halfadd 0
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mov [esi+288*2],dl
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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mov ecx,[ebp]
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mov ebx,[pal16bcl+edx*4]
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cmp cx,0
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je %%noadd
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and ebx,[vesa2_clbit]
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and ecx,[vesa2_clbit]
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add ebx,ecx
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shr ebx,1
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%%noadd
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mov [esi],bx
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xor ecx,ecx
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%%nodraw
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%endmacro
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%macro mode7fulladd 0
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mov [esi+288*2],dl
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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mov ecx,[ebp]
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mov ebx,[pal16bcl+edx*4]
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and ecx,[vesa2_clbit]
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add ebx,ecx
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shr ebx,1
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mov ebx,[fulladdtab+ebx*2]
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mov [esi],bx
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%%nodraw
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%endmacro
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%macro mode7fullsub 0
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mov [esi+288*2],dl
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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mov ecx,[ebp]
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mov ebx,[pal16bxcl+edx*4]
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and ecx,[vesa2_clbit]
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add ebx,ecx
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shr ebx,1
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mov ebx,[fulladdtab+ebx*2]
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xor ebx,0FFFFh
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mov [esi],bx
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%%nodraw
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%endmacro
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%macro mode7mainsub 0
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mov [esi+288*2],dl
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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mov ecx,[pal16b+edx*4]
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mov [esi],cx
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mov [ebp],cx
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%%nodraw
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%endmacro
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%macro mode7halfaddwinon 0
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mov [esi+288*2],dl
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mov eax,[cwinptr]
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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test byte[eax],0FFh
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jnz %%nodraw
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mov ecx,[ebp]
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mov ebx,[pal16bcl+edx*4]
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cmp cx,0
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je %%noadd
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and ebx,[vesa2_clbit]
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and ecx,[vesa2_clbit]
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add ebx,ecx
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shr ebx,1
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%%noadd
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mov [esi],bx
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xor ecx,ecx
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%%nodraw
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inc dword[cwinptr]
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%endmacro
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%macro mode7fulladdwinon 0
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mov [esi+288*2],dl
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mov eax,[cwinptr]
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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test byte[eax],0FFh
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jnz %%nodraw
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mov ecx,[ebp]
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mov ebx,[pal16bcl+edx*4]
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and ecx,[vesa2_clbit]
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add ebx,ecx
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shr ebx,1
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mov ebx,[fulladdtab+ebx*2]
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mov [esi],bx
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%%nodraw
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inc dword[cwinptr]
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%endmacro
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%macro mode7fullsubwinon 0
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mov [esi+288*2],dl
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mov eax,[cwinptr]
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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test byte[eax],0FFh
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jnz %%nodraw
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mov ecx,[ebp]
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mov ebx,[pal16bxcl+edx*4]
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and ecx,[vesa2_clbit]
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add ebx,ecx
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shr ebx,1
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mov ebx,[fulladdtab+ebx*2]
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xor ebx,0FFFFh
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mov [esi],bx
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%%nodraw
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inc dword[cwinptr]
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%endmacro
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%macro mode7mainsubwinon 0
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mov [esi+288*2],dl
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mov eax,[cwinptr]
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test dl,80h
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jnz %%nodraw
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or dl,dl
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jz %%nodraw
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test byte[eax],0FFh
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jnz %%nodraw
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mov ecx,[pal16b+edx*4]
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mov [esi],cx
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mov [ebp],cx
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%%nodraw
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inc dword[cwinptr]
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%endmacro
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%macro mode716tmacro 1
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; mode 7, ax = curyposition, dx = curxposition (left side)
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; draw center map coordinates at (X0-bg1scrolx,Y0-bg1scroly) on screen
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; center map coordinates = (X0,Y0)
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; 1.) cx=X0-bg1scrolx, cy =Y0-ax
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mov bx,[mode7X0]
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and bx,0001111111111111b ; 13 -> 16 bit signed value
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test bx,0001000000000000b
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jz .nonega
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or bx,1110000000000000b
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.nonega
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mov [.cxloc],bx
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mov bx,dx
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and bx,0001111111111111b ; 13 -> 16 bit signed value
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test bx,0001000000000000b
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jz .nonegb
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or bx,1110000000000000b
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.nonegb
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sub [.cxloc],bx
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mov bx,ax
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and bx,0001111111111111b ; 13 -> 16 bit signed value
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test bx,0001000000000000b
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jz .nonegc
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or bx,1110000000000000b
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.nonegc
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mov [.cyloc],bx
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mov bx,[mode7Y0]
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and bx,0001111111111111b ; 13 -> 16 bit signed value
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test bx,0001000000000000b
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jz .nonegd
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or bx,1110000000000000b
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.nonegd
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sub word[.cyloc],bx
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; 2.) Find position at scaled y, centered x at SCX=X0-(cy*C),SCY=Y0-(cy*D)
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movsx ebx,word[.cyloc]
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movsx eax,word[mode7C]
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imul eax,ebx
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neg eax
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mov [.mode7xpos],eax
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mov bx,word[mode7X0]
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add [.mode7xpos+1],bx
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movsx ebx,word[.cyloc]
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movsx eax,word[mode7D]
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imul eax,ebx
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; neg ax
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mov [.mode7ypos],eax
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mov bx,word[mode7Y0]
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add [.mode7ypos+1],bx
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; 3.) Find left scaled location : SCX=SCX-(cx*A),SCY=SCY-(cx*B)
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movsx ebx,word[.cxloc]
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movsx eax,word[mode7A]
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mov [.mode7xadder],eax
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imul eax,ebx
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neg eax
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add [.mode7xpos],eax
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movsx ebx,word[.cxloc]
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movsx eax,word[mode7B]
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mov [.mode7yadder],eax
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imul eax,ebx
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add [.mode7ypos],eax
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; esi = pointer to video buffer
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mov esi,[curvidoffset] ; esi = [vidbuffer] + curypos * 288 + 16
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mov edi,[vram]
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cmp byte[curmosaicsz],1
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je .nomosaic
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mov esi,xtravbuf+32
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mov ecx,128
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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+32
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.nomosaic
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mov ebp,transpbuf+32
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; esi = pointer to video buffer
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; edi = pointer to vram
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; [.mode7xadder] = dword value to add to x value (decimal between 7 & 8bit)
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; [.mode7yadder] = dword value to add to y value (decimal between 7 & 8bit)
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; [.mode7xpos] = dword value of x position, decimal between 7 & 8bit
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; [.mode7xpos+1] = word value of x position
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; [.mode7ypos] = dword value of y position, decimal between 7 & 8bit
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; [.mode7ypos+1] = word value of y position
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mov byte[.temp],0
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xor ebx,ebx
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xor edx,edx
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xor ecx,ecx
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mov dword[.mode7xadd2],800h
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mov byte[.mode7xinc],2
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test dword[.mode7xadder],80000000h
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jz .noneg
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mov dword[.mode7xadd2],-800h
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mov byte[.mode7xinc],-2
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.noneg
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mov dword[.mode7yadd2],800h
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mov byte[.mode7yinc],1
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test dword[.mode7yadder],80000000h
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jz .noneg2
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mov dword[.mode7yadd2],-800h
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mov byte[.mode7yinc],-1
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.noneg2
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mov edi,[vram]
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cmp dword[.mode7xadder],7F0h
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jg near .nextval3
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cmp dword[.mode7xadder],-7F0h
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jl near .nextval3
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cmp dword[.mode7yadder],7F0h
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jg near .nextval3
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cmp dword[.mode7yadder],-7F0h
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jl near .nextval3
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test byte[mode7set],80h
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jnz near .norep2
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mov eax,[.mode7xpos]
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and eax,7FFh
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mov [.mode7xrpos],eax
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mov eax,[.mode7ypos]
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and eax,7FFh
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mov [.mode7yrpos],eax
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; get tile data offset into edi
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mov ebx,[.mode7ypos+1]
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mov eax,[.mode7xpos+1]
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shl ebx,5
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shr eax,3
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and ebx,07FF8h
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shl al,1
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mov bl,al
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mov edi,[vram]
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xor ch,ch
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mov [.mode7ptr],ebx
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mov cl,[edi+ebx]
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shl ecx,7
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add edi,ecx
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.nextval
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test byte[.mode7xrpos+1],08h
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jnz near .rposoffx
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.nextposx
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test byte[.mode7yrpos+1],08h
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jnz near .rposoffy
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.nextposy
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mov cl,[.mode7yrpos+1]
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mov eax,[.mode7xadder]
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mov ch,[.mode7xrpos+1]
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add [.mode7xrpos],eax
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mov dl,[mode7tab+ecx]
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mov eax,[.mode7yadder]
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mov dl,[edi+edx]
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sub [.mode7yrpos],eax
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%1
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add esi,2
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add ebp,2
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dec byte[.temp]
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jnz near .nextval
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jmp .finishmode7
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.rposoffx
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mov al,[.mode7xinc]
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mov edi,[vram]
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add [.mode7ptr],al
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mov ebx,[.mode7ptr]
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xor ecx,ecx
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mov cl,[edi+ebx]
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mov eax,[.mode7xadd2]
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shl ecx,7
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sub [.mode7xrpos],eax
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add edi,ecx
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jmp .nextposx
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.rposoffy
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mov al,[.mode7yinc]
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mov edi,[vram]
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sub [.mode7ptr+1],al
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and byte[.mode7ptr+1],7Fh
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mov ebx,[.mode7ptr]
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xor ecx,ecx
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mov cl,[edi+ebx]
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mov eax,[.mode7yadd2]
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shl ecx,7
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add [.mode7yrpos],eax
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add edi,ecx
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jmp .nextposy
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.finishmode7
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xor eax,eax
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mov dh,byte[curmosaicsz]
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cmp dh,1
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jne near domosaic16b
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ret
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;**********************************************************
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; Mode 7, no repetition mode
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;**********************************************************
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.norep2
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test byte[mode7set],40h
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jnz .tilerep2
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.nextvalb2
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cmp byte[.mode7ypos+2],3
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ja .offscr2
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cmp byte[.mode7xpos+2],3
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jbe near .offscr3
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.offscr2
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mov eax,[.mode7xadder]
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mov ebx,[.mode7yadder]
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add [.mode7xpos],eax
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sub [.mode7ypos],ebx
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add esi,2
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add ebp,2
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dec byte[.temp]
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jnz near .nextvalb2
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jmp .finishmode7
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.tilerep2
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.nextvalb3
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cmp byte[.mode7ypos+2],3
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ja .offscr2b
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cmp byte[.mode7xpos+2],3
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jbe near .offscr3
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.offscr2b
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mov ch,[.mode7xpos+1]
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mov eax,[.mode7xadder]
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mov cl,[.mode7ypos+1]
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mov ebx,[.mode7yadder]
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mov dl,[mode7tab+ecx]
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add [.mode7xpos],eax
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mov dl,[vrama+edx]
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sub [.mode7ypos],ebx
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%1
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add esi,2
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add ebp,2
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dec byte[.temp]
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jnz near .nextvalb3
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jmp .finishmode7
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.offscr3
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mov eax,[.mode7xpos]
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and eax,7FFh
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mov [.mode7xrpos],eax
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mov eax,[.mode7ypos]
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and eax,7FFh
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mov [.mode7yrpos],eax
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; get tile data offset into edi
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mov ebx,[.mode7ypos+1]
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mov eax,[.mode7xpos+1]
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shl ebx,5
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shr eax,3
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and ebx,07FF8h
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shl al,1
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mov bl,al
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mov edi,[vram]
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xor ch,ch
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mov [.mode7ptr],ebx
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mov cl,[edi+ebx]
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shl ecx,7
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add edi,ecx
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.nextvalr
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test byte[.mode7xrpos+1],08h
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jnz near .rposoffxr
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.nextposxr
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test byte[.mode7yrpos+1],08h
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jnz near .rposoffyr
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.nextposyr
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mov cl,[.mode7yrpos+1]
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mov eax,[.mode7xadder]
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mov ch,[.mode7xrpos+1]
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add [.mode7xrpos],eax
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mov dl,[mode7tab+ecx]
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mov eax,[.mode7yadder]
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mov dl,[edi+edx]
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sub [.mode7yrpos],eax
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%1
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add esi,2
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add ebp,2
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dec byte[.temp]
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jnz near .nextvalr
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jmp .finishmode7
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.rposoffxr
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mov al,[.mode7xinc]
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mov edi,[vram]
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add [.mode7ptr],al
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jz .roff
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cmp byte[.mode7ptr],0FEh
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je .roff
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.roffxretb
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mov ebx,[.mode7ptr]
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xor ecx,ecx
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mov cl,[edi+ebx]
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mov eax,[.mode7xadd2]
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shl ecx,7
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sub [.mode7xrpos],eax
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add edi,ecx
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jmp .nextposxr
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.rposoffyr
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mov al,[.mode7yinc]
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mov edi,[vram]
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sub [.mode7ptr+1],al
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js .roff
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.roffyretb
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mov ebx,[.mode7ptr]
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xor ecx,ecx
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mov cl,[edi+ebx]
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mov eax,[.mode7yadd2]
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shl ecx,7
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add [.mode7yrpos],eax
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add edi,ecx
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jmp .nextposyr
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.roff
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test byte[mode7set],40h
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jnz .tilerep3
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jmp .finishmode7
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.tilerep3
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and byte[.mode7yrpos+1],07h
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and byte[.mode7xrpos+1],07h
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mov cl,[.mode7yrpos+1]
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mov eax,[.mode7xadder]
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mov ch,[.mode7xrpos+1]
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add [.mode7xrpos],eax
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mov dl,[mode7tab+ecx]
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mov eax,[.mode7yadder]
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mov dl,[vrama+edx]
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sub [.mode7yrpos],eax
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%1
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add esi,2
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add ebp,2
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dec byte[.temp]
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jnz near .tilerep3
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jmp .finishmode7
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;**********************************************************
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; Mode 7, old routines
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;**********************************************************
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.nextval3
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test byte[mode7set],80h
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jnz near .norep
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.nextval2
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; get tile # @ ([.mode7xpos],[.mode7ypos])
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||
; get tile location in vram (tileloc=x*2+y*256)
|
||
mov ebx,[.mode7ypos+1]
|
||
mov eax,[.mode7xpos+1]
|
||
mov cl,bl
|
||
mov ch,al
|
||
shl ebx,5
|
||
shr eax,3
|
||
mov dl,[mode7tab+ecx]
|
||
and ebx,07FF8h
|
||
shl al,1
|
||
mov bl,al
|
||
xor ch,ch
|
||
mov cl,[edi+ebx]
|
||
mov eax,[.mode7xadder]
|
||
shl ecx,7
|
||
add [.mode7xpos],eax
|
||
add ecx,edx
|
||
mov eax,[.mode7yadder]
|
||
mov dl,[edi+ecx]
|
||
sub [.mode7ypos],eax
|
||
%1
|
||
add esi,2
|
||
add ebp,2
|
||
dec byte[.temp]
|
||
jnz near .nextval2
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
; Color repetition
|
||
.norep
|
||
test byte[mode7set],40h
|
||
jnz near .tilerep
|
||
.nextvalb
|
||
; get tile # @ ([.mode7xpos],[.mode7ypos])
|
||
; get tile location in vram (tileloc=x*2+y*256)
|
||
cmp byte[.mode7ypos+2],3
|
||
ja near .offscr
|
||
cmp byte[.mode7xpos+2],3
|
||
ja near .offscr
|
||
.offscrb
|
||
mov ebx,[.mode7ypos+1]
|
||
mov eax,[.mode7xpos+1]
|
||
mov cl,bl
|
||
mov ch,al
|
||
shl ebx,5
|
||
shr eax,3
|
||
mov dl,[mode7tab+ecx]
|
||
and ebx,07FF8h
|
||
shl al,1
|
||
mov bl,al
|
||
xor ch,ch
|
||
mov cl,[edi+ebx]
|
||
mov eax,[.mode7xadder]
|
||
shl ecx,7
|
||
add [.mode7xpos],eax
|
||
add ecx,edx
|
||
mov eax,[.mode7yadder]
|
||
mov dl,[edi+ecx]
|
||
sub [.mode7ypos],eax
|
||
%1
|
||
add esi,2
|
||
add ebp,2
|
||
dec byte[.temp]
|
||
jnz near .nextvalb
|
||
jmp .goon
|
||
.offscrc
|
||
cmp byte[.mode7ypos+2],3
|
||
ja .offscr
|
||
cmp byte[.mode7xpos+2],3
|
||
jbe near .offscrb
|
||
.offscr
|
||
mov eax,[.mode7xadder]
|
||
mov ebx,[.mode7yadder]
|
||
add [.mode7xpos],eax
|
||
sub [.mode7ypos],ebx
|
||
add esi,2
|
||
add ebp,2
|
||
dec byte[.temp]
|
||
jnz .offscrc
|
||
.goon
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
|
||
.tilerep
|
||
.nextvalbtr
|
||
; get tile # @ ([.mode7xpos],[.mode7ypos])
|
||
; get tile location in vram (tileloc=x*2+y*256)
|
||
cmp byte[.mode7ypos+2],3
|
||
ja near .offscrtr
|
||
cmp byte[.mode7xpos+2],3
|
||
ja near .offscrtr
|
||
.offscrtrb
|
||
mov ebx,[.mode7ypos+1]
|
||
mov eax,[.mode7xpos+1]
|
||
mov cl,bl
|
||
mov ch,al
|
||
shl ebx,5
|
||
shr eax,3
|
||
mov dl,[mode7tab+ecx]
|
||
and ebx,07FF8h
|
||
shl al,1
|
||
mov bl,al
|
||
xor ch,ch
|
||
mov cl,[edi+ebx]
|
||
mov eax,[.mode7xadder]
|
||
shl ecx,7
|
||
add [.mode7xpos],eax
|
||
add ecx,edx
|
||
mov eax,[.mode7yadder]
|
||
mov dl,[edi+ecx]
|
||
sub [.mode7ypos],eax
|
||
%1
|
||
add esi,2
|
||
add ebp,2
|
||
dec byte[.temp]
|
||
jnz near .nextvalbtr
|
||
jmp .goon
|
||
.offscrtrc
|
||
cmp byte[.mode7ypos+2],3
|
||
ja .offscrtr
|
||
cmp byte[.mode7xpos+2],3
|
||
jbe near .offscrtrb
|
||
.offscrtr
|
||
mov ch,[.mode7xpos+1]
|
||
mov eax,[.mode7xadder]
|
||
mov cl,[.mode7ypos+1]
|
||
mov ebx,[.mode7yadder]
|
||
mov dl,[mode7tab+ecx]
|
||
add [.mode7xpos],eax
|
||
mov dl,[vrama+edx]
|
||
sub [.mode7ypos],ebx
|
||
%1
|
||
add esi,2
|
||
add ebp,2
|
||
dec byte[.temp]
|
||
jnz near .offscrtrc
|
||
jmp .goon
|
||
|
||
ALIGN32
|
||
.temp dd 0 ; for byte move left
|
||
.mode7xpos dd 0 ; x position
|
||
.tempa2 dd 0 ; keep this blank!
|
||
.mode7xrpos dd 0 ; x position
|
||
.tempa dd 0 ; keep this blank!
|
||
.mode7ypos dd 0 ; y position
|
||
.tempb2 dd 0 ; keep this blank!
|
||
.mode7yrpos dd 0 ; y position
|
||
.tempb dd 0 ; keep this blank!
|
||
.mode7xadder dd 0 ; number to add for x
|
||
.tempc2 dd 0 ; keep this blank!
|
||
.mode7xadd2 dd 0 ; number to add for x
|
||
.tempc dd 0 ; keep this blank!
|
||
.mode7yadder dd 0 ; number to add for y
|
||
.tempd2 dd 0 ; keep this blank!
|
||
.mode7yadd2 dd 0 ; number to add for y
|
||
.tempd dd 0 ; keep this blank!
|
||
.mode7ptr dd 0 ; pointer value
|
||
.mode7xinc dd 0 ; number to add for x
|
||
.mode7yinc dd 0 ; number to add for y
|
||
.mode7xsloc dd 0 ; which screen x
|
||
.mode7ysloc dd 0 ; which screen y
|
||
.mode7xsrl dd 0 ; which relative screen x
|
||
.mode7ysrl dd 0 ; which relative screen y
|
||
.cxloc dd 0 ; cx location
|
||
.cyloc dd 0 ; cy location
|
||
%endmacro
|
||
|
||
;*******************************************************
|
||
; Processes & Draws Mode 7 half Addition
|
||
;*******************************************************
|
||
NEWSYM drawmode716textbg
|
||
; test byte[scaddset],1
|
||
; jnz near drawmode7dcolor
|
||
mov esi,[cwinptr]
|
||
mov [winptrref],esi
|
||
cmp byte[curmosaicsz],1
|
||
jne .domosaic
|
||
cmp byte[winon],0
|
||
jne near drawmode716twinonextbg
|
||
.domosaic
|
||
test byte[scaddtype],80h
|
||
jnz near drawmode716tsubextbg
|
||
test byte[scaddtype],40h
|
||
jz near drawmode716tfulladdextbg
|
||
cmp byte[scrnon+1],0
|
||
je near drawmode716tfulladdextbg
|
||
cmp dword[coladdr],0
|
||
jnz near drawmode716tfulladdextbg
|
||
mode716tmacro mode7halfadd
|
||
|
||
|
||
;*******************************************************
|
||
; Processes & Draws Mode 7 Full Addition
|
||
;*******************************************************
|
||
NEWSYM drawmode716tfulladdextbg
|
||
mode716tmacro mode7fulladd
|
||
|
||
;**********************************************************
|
||
; Processes and draws Mode 7 subtract
|
||
;**********************************************************
|
||
|
||
drawmode716tsubextbg:
|
||
mode716tmacro mode7fullsub
|
||
|
||
;**********************************************************
|
||
; Mode 7, main & sub mode
|
||
;**********************************************************
|
||
|
||
NEWSYM drawmode716tbextbg
|
||
mode716tmacro mode7mainsub
|
||
|
||
;*******************************************************
|
||
; Processes & Draws Mode 7 half Addition, Window on
|
||
;*******************************************************
|
||
NEWSYM drawmode716twinonextbg
|
||
test byte[scaddtype],80h
|
||
jnz near drawmode716tsubwinonextbg
|
||
test byte[scaddtype],40h
|
||
jz near drawmode716tfulladdwinonextbg
|
||
cmp byte[scrnon+1],0
|
||
je near drawmode716tfulladdwinonextbg
|
||
cmp dword[coladdr],0
|
||
jnz near drawmode716tfulladdwinonextbg
|
||
mode716tmacro mode7halfaddwinon
|
||
|
||
|
||
;*******************************************************
|
||
; Processes & Draws Mode 7 Full Addition, Window on
|
||
;*******************************************************
|
||
|
||
NEWSYM drawmode716tfulladdwinonextbg
|
||
mode716tmacro mode7fulladdwinon
|
||
|
||
;**********************************************************
|
||
; Processes and draws Mode 7 subtract, Window on
|
||
;**********************************************************
|
||
|
||
NEWSYM drawmode716tsubwinonextbg
|
||
mode716tmacro mode7fullsubwinon
|
||
|
||
;**********************************************************
|
||
; Mode 7, main & sub mode, Window on
|
||
;**********************************************************
|
||
|
||
NEWSYM drawmode716tbwinonextbg
|
||
mode716tmacro mode7mainsubwinon
|
||
|
||
|
||
NEWSYM drawmode716textbg2
|
||
mov esi,[cwinptr]
|
||
mov [winptrref],esi
|
||
|
||
; esi = pointer to video buffer
|
||
mov esi,[curvidoffset] ; esi = [vidbuffer] + curypos * 288 + 16
|
||
mov edi,[vram]
|
||
cmp byte[curmosaicsz],1
|
||
je .nomosaic
|
||
mov esi,xtravbuf+32
|
||
mov ecx,128
|
||
.clearnext
|
||
mov dword[esi],0
|
||
add esi,4
|
||
dec ecx
|
||
jnz .clearnext
|
||
mov esi,xtravbuf+32
|
||
.nomosaic
|
||
|
||
mov edi,transpbuf+32
|
||
test byte[scaddtype],80h
|
||
jnz near extbg2sub
|
||
test byte[scaddtype],40h
|
||
jz near extbg2add
|
||
|
||
cmp byte[curmosaicsz],1
|
||
jne .domosaic
|
||
cmp byte[winon],0
|
||
jne near .drawwin
|
||
.domosaic
|
||
mov ecx,256
|
||
xor eax,eax
|
||
.loop
|
||
mov al,[esi+288*2]
|
||
test al,80h
|
||
jz .nopr2
|
||
and al,7Fh
|
||
mov edx,[edi]
|
||
mov ebx,[pal16bcl+eax*4]
|
||
cmp dx,0
|
||
je .noadd
|
||
and ebx,[vesa2_clbit]
|
||
and edx,[vesa2_clbit]
|
||
add ebx,edx
|
||
shr ebx,1
|
||
.noadd
|
||
mov [esi],bx
|
||
.nopr2
|
||
add esi,2
|
||
add edi,2
|
||
loop .loop
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
.drawwin
|
||
mov ebp,[cwinptr]
|
||
mov byte[esi],cl
|
||
.nodrawbw
|
||
mov ecx,256
|
||
xor eax,eax
|
||
.loop2
|
||
mov al,[esi+288*2]
|
||
test byte[ebp],0FFh
|
||
jnz .nopr2b
|
||
test al,80h
|
||
jz .nopr2b
|
||
and al,7Fh
|
||
mov edx,[edi]
|
||
mov ebx,[pal16bcl+eax*4]
|
||
cmp dx,0
|
||
je .noadd2
|
||
and ebx,[vesa2_clbit]
|
||
and edx,[vesa2_clbit]
|
||
add ebx,edx
|
||
shr ebx,1
|
||
.noadd2
|
||
mov [esi],bx
|
||
.nopr2b
|
||
add esi,2
|
||
add edi,2
|
||
inc ebp
|
||
loop .loop2
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
|
||
extbg2add:
|
||
cmp byte[curmosaicsz],1
|
||
jne .domosaic
|
||
cmp byte[winon],0
|
||
jne near .drawwin
|
||
.domosaic
|
||
mov ecx,256
|
||
xor eax,eax
|
||
.loop
|
||
mov al,[esi+288*2]
|
||
test al,80h
|
||
jz .nopr2
|
||
and al,7Fh
|
||
mov edx,[edi]
|
||
mov ebx,[pal16bcl+eax*4]
|
||
and edx,[vesa2_clbit]
|
||
add ebx,edx
|
||
shr ebx,1
|
||
mov ebx,[fulladdtab+ebx*2]
|
||
mov [esi],bx
|
||
.nopr2
|
||
add esi,2
|
||
add edi,2
|
||
loop .loop
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
.drawwin
|
||
mov ebp,[cwinptr]
|
||
mov byte[esi],cl
|
||
.nodrawbw
|
||
mov ecx,256
|
||
xor eax,eax
|
||
.loop2
|
||
mov al,[esi+288*2]
|
||
test byte[ebp],0FFh
|
||
jnz .nopr2b
|
||
test al,80h
|
||
jz .nopr2b
|
||
and al,7Fh
|
||
mov edx,[edi]
|
||
mov ebx,[pal16bcl+eax*4]
|
||
and edx,[vesa2_clbit]
|
||
add ebx,edx
|
||
shr ebx,1
|
||
mov ebx,[fulladdtab+ebx*2]
|
||
mov [esi],bx
|
||
.nopr2b
|
||
add esi,2
|
||
add edi,2
|
||
inc ebp
|
||
loop .loop2
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
|
||
extbg2sub:
|
||
cmp byte[curmosaicsz],1
|
||
jne .domosaic
|
||
cmp byte[winon],0
|
||
jne near .drawwin
|
||
.domosaic
|
||
mov ecx,256
|
||
xor eax,eax
|
||
.loop
|
||
mov al,[esi+288*2]
|
||
test al,80h
|
||
jz .nopr2
|
||
and al,7Fh
|
||
mov edx,[edi]
|
||
mov ebx,[pal16bxcl+eax*4]
|
||
and edx,[vesa2_clbit]
|
||
add ebx,edx
|
||
shr ebx,1
|
||
mov ebx,[fulladdtab+ebx*2]
|
||
xor ebx,0FFFFh
|
||
mov [esi],bx
|
||
.nopr2
|
||
add esi,2
|
||
add edi,2
|
||
loop .loop
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
.drawwin
|
||
mov ebp,[cwinptr]
|
||
mov byte[esi],cl
|
||
.nodrawbw
|
||
mov ecx,256
|
||
xor eax,eax
|
||
.loop2
|
||
mov al,[esi+288*2]
|
||
test byte[ebp],0FFh
|
||
jnz .nopr2b
|
||
test al,80h
|
||
jz .nopr2b
|
||
and al,7Fh
|
||
mov edx,[edi]
|
||
mov ebx,[pal16bxcl+eax*4]
|
||
and edx,[vesa2_clbit]
|
||
add ebx,edx
|
||
shr ebx,1
|
||
mov ebx,[fulladdtab+ebx*2]
|
||
xor ebx,0FFFFh
|
||
mov [esi],bx
|
||
.nopr2b
|
||
add esi,2
|
||
add edi,2
|
||
inc ebp
|
||
loop .loop2
|
||
xor eax,eax
|
||
mov dh,byte[curmosaicsz]
|
||
cmp dh,1
|
||
jne near domosaic16b
|
||
ret
|
||
|