Only use a transparent cursor on Windows when connected via RDP

slouken · slouken · commit dac6af4ba681 · 2025-09-14T17:24:40.000-07:00
VMware relies on the cursor being set to NULL to optimize relative mouse motion for games. We should also revisit whether current RDP works better with a NULL cursor or a transparent cursor. Fixes #13700
diff --git a/src/video/windows/SDL_windowsmouse.c b/src/video/windows/SDL_windowsmouse.c
@@ -434,7 +434,10 @@ static HCURSOR GetCachedCursor(SDL_Cursor *cursor)
 static bool WIN_ShowCursor(SDL_Cursor *cursor)
 {
     if (!cursor) {
-        cursor = SDL_blank_cursor;
+        if (GetSystemMetrics(SM_REMOTESESSION)) {
+            // Use a blank cursor so we continue to get relative motion over RDP
+            cursor = SDL_blank_cursor;
+        }
     }
     if (cursor) {
         if (cursor->internal->surface) {

Original file line number	Diff line number	Diff line change
`@@ -434,7 +434,10 @@ static HCURSOR GetCachedCursor(SDL_Cursor *cursor)`
`434`	`434`	`static bool WIN_ShowCursor(SDL_Cursor *cursor)`
`435`	`435`	`{`
`436`	`436`	`if (!cursor) {`
`437`		`- cursor = SDL_blank_cursor;`
	`437`	`+ if (GetSystemMetrics(SM_REMOTESESSION)) {`
	`438`	`+ // Use a blank cursor so we continue to get relative motion over RDP`
	`439`	`+ cursor = SDL_blank_cursor;`
	`440`	`+ }`
`438`	`441`	`}`
`439`	`442`	`if (cursor) {`
`440`	`443`	`if (cursor->internal->surface) {`