[gtk/wip/chergert/glproto: 71/94] only change framebuffer if non-zero

[Christian Hergert <chergert src gnome org>]

commit c7181869c5067696f64648209e66adb97864f176
Author: Christian Hergert <chergert redhat com>
Date:   Mon Dec 28 23:19:14 2020 -0800

    only change framebuffer if non-zero

 gsk/next/gskglrenderjob.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/gsk/next/gskglrenderjob.c b/gsk/next/gskglrenderjob.c
index 05fb3e5478..bac0df3cc9 100644
--- a/gsk/next/gskglrenderjob.c
+++ b/gsk/next/gskglrenderjob.c
@@ -594,7 +594,9 @@ gsk_gl_render_job_render (GskGLRenderJob *job,
 
   gsk_next_driver_begin_frame (job->driver);
 
-  gsk_gl_command_queue_bind_framebuffer (job->command_queue, job->framebuffer);
+  if (job->framebuffer != 0)
+    gsk_gl_command_queue_bind_framebuffer (job->command_queue, job->framebuffer);
+
   gsk_gl_command_queue_clear (job->command_queue, 0, &job->viewport);
 
   gdk_gl_context_push_debug_group (context, "Building command queue");