From ef77a6fa73f0cfb74430fdda2b1c4f7d582d9746 Mon Sep 17 00:00:00 2001
From: Benjamin Otte <otte@redhat.com>
Date: Tue, 14 Nov 2023 20:13:11 +0100
Subject: [PATCH] gl: Don't punch hole if the subsurface is above

Saves some work.
---
 gsk/gl/gskglrenderjob.c | 21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

diff --git a/gsk/gl/gskglrenderjob.c b/gsk/gl/gskglrenderjob.c
index 5e7910f7c5..6ab5ed7627 100644
--- a/gsk/gl/gskglrenderjob.c
+++ b/gsk/gl/gskglrenderjob.c
@@ -4017,17 +4017,20 @@ gsk_gl_render_job_visit_subsurface_node (GskGLRenderJob      *job,
   if (job->offload &&
       gsk_offload_subsurface_is_offloaded (job->offload, subsurface))
     {
-      /* Clear the area so we can see through */
-      if (gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color)))
+      if (!gdk_subsurface_is_above_parent (subsurface))
         {
-          GskGLCommandBatch *batch;
-          guint16 color[4];
-          rgba_to_half (&(GdkRGBA){0,0,0,0}, color);
+          /* Clear the area so we can see through */
+          if (gsk_gl_render_job_begin_draw (job, CHOOSE_PROGRAM (job, color)))
+            {
+              GskGLCommandBatch *batch;
+              guint16 color[4];
+              rgba_to_half (&(GdkRGBA){0,0,0,0}, color);
 
-          batch = gsk_gl_command_queue_get_batch (job->command_queue);
-          batch->draw.blend = 0;
-          gsk_gl_render_job_draw_rect_with_color (job, &node->bounds, color);
-          gsk_gl_render_job_end_draw (job);
+              batch = gsk_gl_command_queue_get_batch (job->command_queue);
+              batch->draw.blend = 0;
+              gsk_gl_render_job_draw_rect_with_color (job, &node->bounds, color);
+              gsk_gl_render_job_end_draw (job);
+            }
         }
     }
   else