ui/gtk: set the area of the scanout texture correctly

x and y offsets and width and height of the scanout texture
is not correctly configured in case guest scanout frame is
dmabuf.

Cc: Gerd Hoffmann <kraxel@redhat.com>
Cc: Marc-André Lureau <marcandre.lureau@redhat.com>
Cc: Vivek Kasireddy <vivek.kasireddy@intel.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Message-ID: <20230621213150.29573-1-dongwon.kim@intel.com>
(cherry picked from commit 37802a2)
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

ui/gtk-egl.c

@@ -257,7 +257,8 @@ void gd_egl_scanout_dmabuf(DisplayChangeListener *dcl,
 
     gd_egl_scanout_texture(dcl, dmabuf->texture,
                            dmabuf->y0_top, dmabuf->width, dmabuf->height,
-                           0, 0, dmabuf->width, dmabuf->height);
+                           dmabuf->x, dmabuf->y, dmabuf->scanout_width,
+                           dmabuf->scanout_height);
 
     if (dmabuf->allow_fences) {
         vc->gfx.guest_fb.dmabuf = dmabuf;

ui/gtk-gl-area.c

@@ -299,7 +299,8 @@ void gd_gl_area_scanout_dmabuf(DisplayChangeListener *dcl,
 
     gd_gl_area_scanout_texture(dcl, dmabuf->texture,
                                dmabuf->y0_top, dmabuf->width, dmabuf->height,
-                               0, 0, dmabuf->width, dmabuf->height);
+                               dmabuf->x, dmabuf->y, dmabuf->scanout_width,
+                               dmabuf->scanout_height);
 
     if (dmabuf->allow_fences) {
         vc->gfx.guest_fb.dmabuf = dmabuf;