ryujinx/SDL
1
0
Fork 0
mirror of https://github.com/Ryujinx/SDL.git synced 2024-12-23 15:15:39 +00:00
Code Issues Packages Projects Releases Wiki Activity

Only apply the jitter filter to prevent unexpected motion on axes that haven't been touched.

Browse source
This commit is contained in:
Sam Lantinga 2017-09-21 10:29:17 -07:00
parent 5ae90ef67a
commit eaab6098eb
1 changed files with 5 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

5
src/joystick/SDL_joystick.c
View file

@ -661,7 +661,6 @@ int
SDL_PrivateJoystickAxis(SDL_Joystick * joystick, Uint8 axis, Sint16 value)
{
int posted;
const int MAX_ALLOWED_JITTER = SDL_JOYSTICK_AXIS_MAX / 80; /* ShanWan PS3 controller needed 96 */
/* Make sure we're not getting garbage or duplicate events */
if (axis >= joystick->naxes) {
@ -673,10 +672,12 @@ SDL_PrivateJoystickAxis(SDL_Joystick * joystick, Uint8 axis, Sint16 value)
joystick->axes[axis].zero = value;
joystick->axes[axis].has_initial_value = SDL_TRUE;
}
if (!joystick->axes[axis].sent_initial_value) {
/* Make sure we don't send motion until there's real activity on this axis */
const int MAX_ALLOWED_JITTER = SDL_JOYSTICK_AXIS_MAX / 80; /* ShanWan PS3 controller needed 96 */
if (SDL_abs(value - joystick->axes[axis].value) <= MAX_ALLOWED_JITTER) {
return 0;
}
if (!joystick->axes[axis].sent_initial_value) {
joystick->axes[axis].sent_initial_value = SDL_TRUE;
joystick->axes[axis].value = value; /* Just so we pass the check above */
SDL_PrivateJoystickAxis(joystick, axis, joystick->axes[axis].initial_value);