gtk/opengl: add opengl context and scanout support (egl)

This allows virtio-gpu to render in 3d mode.
Uses egl, for gtk versions 3.14 and older.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>

1 files changed, 7 insertions, 0 deletions

diff --git a/ui/gtk.c b/ui/gtk.c
index 3057cdc3f7..e6e35323b1 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -615,6 +615,13 @@ static const DisplayChangeListenerOps dcl_egl_ops = {
     .dpy_refresh          = gd_egl_refresh,
     .dpy_mouse_set        = gd_mouse_set,
     .dpy_cursor_define    = gd_cursor_define,
+
+    .dpy_gl_ctx_create       = gd_egl_create_context,
+    .dpy_gl_ctx_destroy      = qemu_egl_destroy_context,
+    .dpy_gl_ctx_make_current = gd_egl_make_current,
+    .dpy_gl_ctx_get_current  = qemu_egl_get_current_context,
+    .dpy_gl_scanout          = gd_egl_scanout,
+    .dpy_gl_update           = gd_egl_scanout_flush,
 };
 
 #endif