forked from KolibriOS/kolibrios
48 lines
1.2 KiB
PHP
48 lines
1.2 KiB
PHP
;
|
|
; 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
|
|
;
|
|
|
|
uglobal
|
|
old_screen_width dd ?
|
|
old_screen_height dd ?
|
|
endg
|
|
|
|
cmp eax,13 ; CALL VIDEOMODE DRIVER FUNCTIONS
|
|
jne .no_vmode_drv_access
|
|
pushd [ScreenWidth] [ScreenHeight]
|
|
popd [old_screen_height] [old_screen_width]
|
|
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
|
|
mov eax,[old_screen_width]
|
|
mov ebx,[old_screen_height]
|
|
sub eax,[ScreenWidth]
|
|
jnz @f
|
|
sub ebx,[ScreenHeight]
|
|
jz .resolution_wasnt_changed
|
|
jmp .lp1
|
|
@@: sub ebx,[ScreenHeight]
|
|
.lp1: sub [screen_workarea.right],eax
|
|
sub [screen_workarea.bottom],ebx
|
|
|
|
call repos_windows
|
|
mov eax, 0
|
|
mov ebx, 0
|
|
mov ecx, [ScreenWidth]
|
|
mov edx, [ScreenHeight]
|
|
call calculatescreen
|
|
|
|
.resolution_wasnt_changed:
|
|
ret
|
|
.no_vmode_drv_access:
|