[gtk/wip/chergert/glproto] add missing bounds

[Christian Hergert <chergert src gnome org>]

commit b453d5bdebdd23a306960854d4c7d22229d25191
Author: Christian Hergert <chergert redhat com>
Date:   Mon Jan 11 15:59:56 2021 -0800

    add missing bounds

 gsk/next/gskglrenderjob.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/gsk/next/gskglrenderjob.c b/gsk/next/gskglrenderjob.c
index cb54de73a7..ee4a1e9dfc 100644
--- a/gsk/next/gskglrenderjob.c
+++ b/gsk/next/gskglrenderjob.c
@@ -1735,6 +1735,7 @@ gsk_gl_render_job_visit_opacity_node (GskGLRenderJob *job,
        * color nodes overlap, there may not be any blending between them.
        */
 
+      offscreen.bounds = &child->bounds;
       offscreen.force_offscreen = TRUE;
       offscreen.reset_clip = TRUE;