[PULL 4/6] ui/gtk-egl: guest fb texture needs to be regenerated when reinitializing egl

[Gerd Hoffmann <kraxel@redhat.com>]

From: Dongwon Kim <dongwon.kim@intel.com>

If guest fb is backed by dmabuf (blob-resource), the texture bound to the
old context needs to be recreated in case the egl is re-initialized (e.g.
new window for vc is created in case of detaching/reattaching of the tab)

v2: call egl_dmabuf_release_texutre instead of putting 0 to dmabuf->texture
    (Vivek Kasireddy)

Cc: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Message-Id: <20211104065153.28897-3-dongwon.kim@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
---
 ui/gtk-egl.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ui/gtk-egl.c b/ui/gtk-egl.c
index 21649950983f..f2026e4b5c9b 100644
--- a/ui/gtk-egl.c
+++ b/ui/gtk-egl.c
@@ -155,6 +155,10 @@ void gd_egl_refresh(DisplayChangeListener *dcl)
             surface_gl_destroy_texture(vc->gfx.gls, vc->gfx.ds);
             surface_gl_create_texture(vc->gfx.gls, vc->gfx.ds);
         }
+        if (vc->gfx.guest_fb.dmabuf) {
+            egl_dmabuf_release_texture(vc->gfx.guest_fb.dmabuf);
+            gd_egl_scanout_dmabuf(dcl, vc->gfx.guest_fb.dmabuf);
+        }
     }
 
     graphic_hw_update(dcl->con);
-- 
2.31.1