From 236deab49b977479c2b0064f09d462e513fcccb3 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Mon, 30 Mar 2015 11:31:53 -0700
Subject: [PATCH] Fixed relative mouse motion moving farther and farther off
 screen.

---
 src/events/SDL_mouse.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/src/events/SDL_mouse.c b/src/events/SDL_mouse.c
index 0ce443a3c..326bbbadc 100644
--- a/src/events/SDL_mouse.c
+++ b/src/events/SDL_mouse.c
@@ -293,9 +293,14 @@ SDL_PrivateSendMouseMotion(SDL_Window * window, SDL_MouseID mouseID, int relativ
         event.motion.yrel = yrel;
         posted = (SDL_PushEvent(&event) > 0);
     }
-    /* Use unclamped values if we're getting events outside the window */
-    mouse->last_x = x;
-    mouse->last_y = y;
+    if (relative) {
+        mouse->last_x = mouse->x;
+        mouse->last_y = mouse->y;
+    } else {
+        /* Use unclamped values if we're getting events outside the window */
+        mouse->last_x = x;
+        mouse->last_y = y;
+    }
     return posted;
 }