Fix an issue where Surface::lock() would never update the output region

this bug was introduced recently. in some situations Surface::lock()
is not able to preserve the content of the back buffer and needs
to tell the caller to redraw everything.

Bug: 5186460
Change-Id: I14e03939ddfc1b7ad2a8b99ad79435314c60e78e
1 file changed
tree: 8697b28c25e9a7a88ebc216dd0673d66e853ad5e
  1. cmds/
  2. include/
  3. libs/
  4. opengl/
  5. services/
  6. MODULE_LICENSE_APACHE2
  7. NOTICE