gallium: remove xlib_driver::display_surface

Just use flush_frontbuffer directly.  The flush_frontbuffer routine has
been somewhat devalued recently, but it is actually just the right
interface for our needs.

It is in pipe_screen, meaning that any wrapping (eg trace module)
will get properly unwrapped before we try and use the pipe_surface
argument for real.

If a particular co-state-tracker needs to implement this itself, it
should organize a way to allow the winsys to call back up to its
level, rather than hijacking the driver-supplied implementation.

1 files changed, 3 insertions, 7 deletions

diff --git a/src/gallium/state_trackers/glx/xlib/xm_api.c b/src/gallium/state_trackers/glx/xlib/xm_api.c
index d878740ab1..d8aa59b3b7 100644
--- a/src/gallium/state_trackers/glx/xlib/xm_api.c
+++ b/src/gallium/state_trackers/glx/xlib/xm_api.c
@@ -1092,13 +1092,9 @@ void XMesaSwapBuffers( XMesaBuffer b )
    st_swapbuffers(b->stfb, &frontLeftSurf, NULL);
 
    if (frontLeftSurf) {
-      if (_screen != screen) {
-         struct trace_surface *tr_surf = trace_surface( frontLeftSurf );
-         struct pipe_surface *surf = tr_surf->surface;
-         frontLeftSurf = surf;
-      }
-
-      driver.display_surface(&b->ws, frontLeftSurf);
+      screen->flush_frontbuffer( screen,
+                                 frontLeftSurf, 
+                                 &b->ws );
    }
 
    xmesa_check_and_update_buffer_size(NULL, b);