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feat(gamescope): a three way switch for relative mouse motion

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Games that confine the cursor and warp it back to read movement never
reach the nested hints rule, so their aim stays bounded by the screen.
The convar defaults to 0 and leaves that rule alone; 1 forces relative
motion for the focused game, 2 keeps the pointer absolute even when the
rule would apply.
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kingokksa committed 2026-10-31 23:50:24 +08:00
1 parent ac132a23e2
commit db3d7555e0
1 file changed
+30
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tools/gamescope/patches/0126-relative-mouse-convar.patch
+30
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@@ -0,0 +1,30 @@
--- a/src/steamcompmgr.cpp
+++ b/src/steamcompmgr.cpp
@@ -3062,8 +3062,13 @@
#endif
gamescope::ConVar<int> cv_cursor_composite{ "cursor_composite", 1, "0 = Never composite a cursor. 1 = Composite cursor when not nested. 2 = Always composite a cursor manually" };
+static gamescope::ConVar<int> cv_relative_mouse( "relative_mouse", 0,
+"0 = Leave it to the game and the nested hints. 1 = Send host pointer motion as relative movement, for games that confine the cursor and warp it back to read movement. 2 = Never go relative." );
bool ShouldDrawCursor()
{
+ if ( cv_relative_mouse.Get() == 1 )
+ return true;
+
global_focus_t *pFocus = GetCurrentFocus();
gamescope::INestedHints *pNestedHints = pFocus ? pFocus->GetNestedHints() : nullptr;
return gamescope::CursorShouldBeComposited( cv_cursor_composite.Get(), g_bForceRelativeMouse,
@@ -10810,7 +10815,12 @@
const bool bExcludedAppId = uAppId && gamescope::Algorithm::Contains( s_uRelativeMouseFilteredAppids, uAppId );
- const bool bRelativeMouseMode = bImageEmpty && bHasPointerConstraint && !bExcludedAppId;
+ const int nRelativeMouse = cv_relative_mouse.Get();
+ const bool bForcedRelativeMouse = nRelativeMouse == 1 && !window_is_steam( pPaintFocus->inputFocusWindow );
+
+ const bool bRelativeMouseMode = nRelativeMouse == 2
+ ? false
+ : ( bForcedRelativeMouse || ( bImageEmpty && bHasPointerConstraint && !bExcludedAppId ) );
pPaintFocus->GetNestedHints()->SetRelativeMouseMode( bRelativeMouseMode );
}