ignore first mouse move after mouse grab as it's generally garbage

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@4680 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/vid_glx.c b/vid_glx.c
index 1dd50cabc7aba1383f5b7ab746ef5f0e14006d9d..a96e3f9f7faf0e4327336a1970987387e8f6aae9 100644 (file)
--- a/vid_glx.c
+++ b/vid_glx.c
@@ -89,7 +89,7 @@ Atom wm_delete_window_atom;
 
 
 static qboolean                mouse_avail = true;
-static qboolean                mouse_active = false, usingmouse = false;
+static qboolean                mouse_active = false, usingmouse = false, ignoremousemove = false;
 static float   mouse_x, mouse_y;
 static int p_mouse_x, p_mouse_y;
 
@@ -285,6 +285,7 @@ static void install_grabs(void)
 
        mouse_active = true;
        mouse_x = mouse_y = 0;
+       ignoremousemove = true;
 }
 
 static void uninstall_grabs(void)
@@ -304,6 +305,7 @@ static void uninstall_grabs(void)
        XUndefineCursor(vidx11_display, win);
 
        mouse_active = false;
+       ignoremousemove = true;
 }
 
 static void HandleEvents(void)
@@ -513,6 +515,13 @@ static void HandleEvents(void)
                XWarpPointer(vidx11_display, None, win, 0, 0, 0, 0, p_mouse_x, p_mouse_y);
        }
 
+       // if told to ignore one mouse move, do so
+       if (ignoremousemove)
+       {
+               ignoremousemove = false;
+               mouse_x = 0;
+               mouse_y = 0;
+       }
 }
 
 static void IN_DeactivateMouse( void )
@@ -534,7 +543,6 @@ static void IN_ActivateMouse( void )
 
        if (!mouse_active)
        {
-               mouse_x = mouse_y = 0; // don't spazz
                install_grabs();
                mouse_active = true;
        }
@@ -860,6 +868,7 @@ int VID_InitMode(int fullscreen, int width, int height, int bpp)
        gl_videosyncavailable = GL_CheckExtension("GLX_SGI_video_sync", videosyncfuncs, "-novideosync", false);
 
        usingmouse = false;
+       ignoremousemove = true;
        vid_hidden = false;
        vid_activewindow = true;
        GL_Init();