gltexture: Synchronize when downloading

If the GL texture has a sync object, wait
on it before downloading the data.

diff --git a/gdk/gdkgltexture.c b/gdk/gdkgltexture.c
index 3b6c20a63789755be5096d2b4b6ed79ac772ee44..b409ae852d6d299434eabf08ba58d7490d1a54cd 100644 (file)
--- a/gdk/gdkgltexture.c
+++ b/gdk/gdkgltexture.c
@@ -100,6 +100,10 @@ gdk_gl_texture_invoke_callback (gpointer data)
   context = gdk_display_get_gl_context (gdk_gl_context_get_display (invoke->self->context));
 
   gdk_gl_context_make_current (context);
+
+  if (invoke->self->sync && context != invoke->self->context)
+    glWaitSync (invoke->self->sync, 0, GL_TIMEOUT_IGNORED);
+
   glBindTexture (GL_TEXTURE_2D, invoke->self->id);
 
   invoke->func (invoke->self, context, invoke->data);