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Don't uncorrelate while rumble is active and stay correlated longer in case raw input messages are lagging a bit.

This commit is contained in:
Sam Lantinga 2021-02-01 09:21:11 -08:00
parent e862856e6f
commit fadfa51022
1 changed files with 9 additions and 6 deletions
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15
src/joystick/windows/SDL_rawinputjoystick.c
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@ -1482,7 +1482,9 @@ RAWINPUT_UpdateOtherAPIs(SDL_Joystick *joystick)
#ifdef SDL_JOYSTICK_RAWINPUT_WGI
/* Parallel logic to WINDOWS_XINPUT below */
RAWINPUT_UpdateWindowsGamingInput();
if (ctx->wgi_correlated) {
if (ctx->wgi_correlated &&
!joystick->low_frequency_rumble && !joystick->high_frequency_rumble &&
!joystick->left_trigger_rumble && !joystick->right_trigger_rumble) {
/* We have been previously correlated, ensure we are still matching, see comments in XINPUT section */
if (RAWINPUT_WindowsGamingInputSlotMatches(&match_state_xinput, ctx->wgi_slot)) {
ctx->wgi_uncorrelate_count = 0;
@ -1490,9 +1492,9 @@ RAWINPUT_UpdateOtherAPIs(SDL_Joystick *joystick)
++ctx->wgi_uncorrelate_count;
/* Only un-correlate if this is consistent over multiple Update() calls - the timing of polling/event
pumping can easily cause this to uncorrelate for a frame. 2 seemed reliable in my testing, but
let's set it to 3 to be safe. An incorrect un-correlation will simply result in lower precision
let's set it to 5 to be safe. An incorrect un-correlation will simply result in lower precision
triggers for a frame. */
if (ctx->wgi_uncorrelate_count >= 3) {
if (ctx->wgi_uncorrelate_count >= 5) {
#ifdef DEBUG_RAWINPUT
SDL_Log("UN-Correlated joystick %d to WindowsGamingInput device #%d\n", joystick->instance_id, ctx->wgi_slot);
#endif
@ -1560,7 +1562,8 @@ RAWINPUT_UpdateOtherAPIs(SDL_Joystick *joystick)
/* Parallel logic to WINDOWS_GAMING_INPUT above */
if (ctx->xinput_enabled) {
RAWINPUT_UpdateXInput();
if (ctx->xinput_correlated) {
if (ctx->xinput_correlated &&
!joystick->low_frequency_rumble && !joystick->high_frequency_rumble) {
/* We have been previously correlated, ensure we are still matching */
/* This is required to deal with two (mostly) un-preventable mis-correlation situations:
A) Since the HID data stream does not provide an initial state (but polling XInput does), if we open
@ -1583,9 +1586,9 @@ RAWINPUT_UpdateOtherAPIs(SDL_Joystick *joystick)
++ctx->xinput_uncorrelate_count;
/* Only un-correlate if this is consistent over multiple Update() calls - the timing of polling/event
pumping can easily cause this to uncorrelate for a frame. 2 seemed reliable in my testing, but
let's set it to 3 to be safe. An incorrect un-correlation will simply result in lower precision
let's set it to 5 to be safe. An incorrect un-correlation will simply result in lower precision
triggers for a frame. */
if (ctx->xinput_uncorrelate_count >= 3) {
if (ctx->xinput_uncorrelate_count >= 5) {
#ifdef DEBUG_RAWINPUT
SDL_Log("UN-Correlated joystick %d to XInput device #%d\n", joystick->instance_id, ctx->xinput_slot);
#endif