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x11: use raw values for relative mouse motion

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Fixes https://github.com/libsdl-org/SDL/issues/13743
This commit is contained in:
Sam Lantinga
2025-08-14 19:30:54 -07:00
parent fe16c620d8
commit 5f77da3a50
1 changed files with 3 additions and 4 deletions
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7
src/video/x11/SDL_x11xinput2.c
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@@ -84,15 +84,14 @@ static void parse_relative_valuators(SDL_XInput2DeviceInfo *devinfo, const XIRaw
for (int j = 0; j < 2; ++j) {
if (devinfo->number[j] == i) {
const double current_val = rawev->valuators.values[values_i];
double current_val = rawev->raw_values[values_i];
if (devinfo->relative[j]) {
processed_coords[j] = current_val;
} else {
processed_coords[j] = devinfo->prev_coords[j] - current_val; // convert absolute to relative
processed_coords[j] = (current_val - devinfo->prev_coords[j]); // convert absolute to relative
devinfo->prev_coords[j] = current_val;
}
devinfo->prev_coords[j] = current_val;
++found;
break;