2005-10-06 21:56:22 +04:00
|
|
|
;
|
|
|
|
; Call of videomode driver's functions
|
|
|
|
;
|
|
|
|
; (Add in System function 21 (and/or 26) as a subfunction 13)
|
|
|
|
;
|
|
|
|
; Author: Trans
|
|
|
|
; Date: 19.07.2003
|
|
|
|
;
|
|
|
|
; Include in MeOS kernel and compile with FASM
|
|
|
|
;
|
2006-02-18 13:41:47 +03:00
|
|
|
|
|
|
|
uglobal
|
|
|
|
old_screen_width dd ?
|
|
|
|
old_screen_height dd ?
|
|
|
|
endg
|
|
|
|
|
2005-10-06 21:56:22 +04:00
|
|
|
cmp eax,13 ; CALL VIDEOMODE DRIVER FUNCTIONS
|
|
|
|
jne .no_vmode_drv_access
|
2006-02-18 13:41:47 +03:00
|
|
|
pushd [0x0000fe00] [0x0000fe04]
|
|
|
|
popd [old_screen_height] [old_screen_width]
|
2005-10-06 21:56:22 +04:00
|
|
|
or eax,-1 ; If driver is absent then eax does not change
|
|
|
|
call 0x760100 ; Entry point of video driver
|
|
|
|
mov [esp+36],eax
|
|
|
|
mov [esp+24],ebx
|
|
|
|
mov [esp+32],ecx
|
|
|
|
; mov [esp+28],edx
|
2006-02-18 13:41:47 +03:00
|
|
|
mov eax,[old_screen_width]
|
|
|
|
mov ebx,[old_screen_height]
|
|
|
|
sub eax,[0x0000fe00]
|
|
|
|
jnz @f
|
|
|
|
sub ebx,[0x0000fe04]
|
|
|
|
jz .resolution_wasnt_changed
|
|
|
|
jmp .lp1
|
|
|
|
@@: sub ebx,[0x0000fe04]
|
|
|
|
.lp1: sub [screen_workarea.right],eax
|
|
|
|
sub [screen_workarea.bottom],ebx
|
|
|
|
|
|
|
|
call repos_windows
|
2006-08-01 18:09:42 +04:00
|
|
|
mov eax, 0
|
|
|
|
mov ebx, 0
|
|
|
|
mov ecx, [0xfe00]
|
|
|
|
mov edx, [0xfe04]
|
2006-02-18 13:41:47 +03:00
|
|
|
call calculatescreen
|
|
|
|
|
|
|
|
.resolution_wasnt_changed:
|
2005-10-06 21:56:22 +04:00
|
|
|
ret
|
|
|
|
.no_vmode_drv_access:
|