arnavbhatt288/kolibrios
1
0
Fork 0
forked from KolibriOS/kolibrios
Code Pull Requests Activity

Mouse acceleration options

Browse Source 
git-svn-id: svn://kolibrios.org@5966 a494cfbc-eb01-0410-851d-a64ba20cac60
This commit is contained in:
pathoswithin 2015-12-15 17:20:18 +00:00
parent 63cc280c5f
commit 2c4528ee50
1 changed files with 19 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
kernel/trunk/hid/mousedrv.inc
View File

@ -551,39 +551,35 @@ proc set_mouse_data stdcall uses edx, BtnState:dword, XMoving:dword, YMoving:dwo
endp
;-----------------------------------------------------------------------------
; 3 = x^2 /2
; 2 = (x+1)^2 /4
; 1 = (x+2)^2 /8
align 4
mouse_acceleration:
cmp [mouse_delay], 1
jz .slight
jc .end
cmp [mouse_delay], 0
jz .end
push eax
@@:
neg eax
jl @b
mov edx, eax
shr edx, 1
jc @f
mul dl
add eax, edx
jmp .next
@@:
inc edx
mul dl
.next:
cmp [mouse_delay], 3
adc eax, 0
cmp [mouse_delay], 2
adc eax, 0
mul al
shr eax, 1
adc eax, 0
cmp [mouse_delay], 2
jz .2
jnc .3
shr eax, 1
.2:
shr eax, 1
.3:
pop edx
test edx, edx
jns .end
neg eax
jmp .end
;--------------------------------------
.slight:
shl eax, 1
js @f
dec eax
jmp .end
@@:
inc eax
.end:
imul [mouse_speed_factor]
ret