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wayland: Scale accelerated relative pointer coordinates with emulated resolutions

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The accelerated relative coordinates are always relative to the desktop resolution, and need to be scaled with emulated fullscreen resolutions for mouse movement to remain stable. Otherwise, pointer speeds will be too fast on emulated resolutions below the desktop resolution, and too slow on those above.

(cherry picked from commit 027df89ed3)
This commit is contained in:
Frank Praznik
2025-03-22 14:35:39 -04:00
parent e5f8043037
commit d8837edfa2
1 changed files with 2 additions and 2 deletions
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src/video/wayland/SDL_waylandevents.c
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@@ -1023,8 +1023,8 @@ static void relative_pointer_handle_relative_motion(void *data,
dx = wl_fixed_to_double(dx_unaccel_w); dx = wl_fixed_to_double(dx_unaccel_w);
dy = wl_fixed_to_double(dy_unaccel_w); dy = wl_fixed_to_double(dy_unaccel_w);
} else { } else {
dx = wl_fixed_to_double(dx_w); dx = wl_fixed_to_double(dx_w) * window->pointer_scale.x;
dy = wl_fixed_to_double(dy_w); dy = wl_fixed_to_double(dy_w) * window->pointer_scale.y;
} }
SDL_SendMouseMotion(timestamp, window->sdlwindow, input->pointer_id, true, (float)dx, (float)dy); SDL_SendMouseMotion(timestamp, window->sdlwindow, input->pointer_id, true, (float)dx, (float)dy);