[Video/KMSDRM] Manually re-show the cursor on window creation, if needed.

src/video/kmsdrm/SDL_kmsdrmmouse.c

@@ -179,6 +179,31 @@ cleanup:
     return ret;
 }
 
+/* When we create a window, we have to test if we have to show the cursor,
+   and explicily do so if necessary.
+   This is because when we destroy a window, we take the cursor away from the
+   cursor plane, and destroy the cusror GBM BO. So we have to re-show it,
+   so to say. */
+void
+KMSDRM_InitCursor()
+{
+    SDL_Mouse *mouse = NULL;
+    mouse = SDL_GetMouse();
+
+    if (!mouse) {
+        return;
+    }
+    if  (!(mouse->cur_cursor)) {
+        return;
+    }
+
+    if  (!(mouse->cursor_shown)) {
+        return;
+    }
+
+    KMSDRM_ShowCursor(mouse->cur_cursor);
+}
+
 /* Show the specified cursor, or hide if cursor is NULL.
    cur_cursor is the current cursor, and cursor is the new cursor.
    A cursor is displayed on a display, so we have to add a pointer to dispdata

src/video/kmsdrm/SDL_kmsdrmmouse.h

@@ -47,6 +47,8 @@ typedef struct _KMSDRM_CursorData
 extern void KMSDRM_InitMouse(_THIS);
 extern void KMSDRM_DeinitMouse(_THIS);
 
+extern void KMSDRM_InitCursor();
+
 #endif /* SDL_KMSDRM_mouse_h_ */
 
 /* vi: set ts=4 sw=4 expandtab: */

src/video/kmsdrm/SDL_kmsdrmvideo.c

@@ -1748,9 +1748,14 @@ KMSDRM_CreateWindow(_THIS, SDL_Window * window)
              SDL_EGL_LoadLibrary(_this, NULL, egl_display, EGL_PLATFORM_GBM_MESA);
          }
 
-         /* Can't init mouse sooner because planes are not ready.
+         /* Can't init mouse stuff sooner cursor plane is not ready. */
-            We do it along with the KMSDRM_GBMInit() call, so do this only when GBM is not init. */
          KMSDRM_InitMouse(_this);
+
+         /* Since we take cursor buffer way from the cursor plane and
+            destroy the cursor GBM BO when we destroy a window, we must
+            also manually re-show the cursor on screen, if necessary,
+            when we create a window. */ 
+         KMSDRM_InitCursor();
     }
 
     /* Allocate window internal data */