[mutter] clutter/stage-cogl: Use view fb instead of onscreen fb for debug-drawing

[verdre <jonasd src gnome org>]

commit 8e1bd64e05c3098fcce4f916f9e4468decb8f30c
Author: Jonas Dreßler <verdre v0yd nl>
Date:   Sat Mar 7 20:29:09 2020 +0100

    clutter/stage-cogl: Use view fb instead of onscreen fb for debug-drawing
    
    We need to use the framebuffer of the view instead of the onscreen
    framebuffer when painting the damage region, otherwise the redraw clips
    on rotated monitors won't be shown correctly.
    
    https://gitlab.gnome.org/GNOME/mutter/-/merge_requests/1237

 clutter/clutter/cogl/clutter-stage-cogl.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/clutter/clutter/cogl/clutter-stage-cogl.c b/clutter/clutter/cogl/clutter-stage-cogl.c
index 227107a93f..db87e39337 100644
--- a/clutter/clutter/cogl/clutter-stage-cogl.c
+++ b/clutter/clutter/cogl/clutter-stage-cogl.c
@@ -291,7 +291,7 @@ paint_damage_region (ClutterStageWindow *stage_window,
                      cairo_region_t     *swap_region,
                      cairo_region_t     *queued_redraw_clip)
 {
-  CoglFramebuffer *framebuffer = clutter_stage_view_get_onscreen (view);
+  CoglFramebuffer *framebuffer = clutter_stage_view_get_framebuffer (view);
   CoglContext *ctx = cogl_framebuffer_get_context (framebuffer);
   static CoglPipeline *overlay_blue = NULL;
   ClutterStageCogl *stage_cogl = CLUTTER_STAGE_COGL (stage_window);