From a2975bb4b7a46aeb04e7205ba8e00590a2eea709 Mon Sep 17 00:00:00 2001
From: Robin Gareus <robin@gareus.org>
Date: Wed, 14 Jun 2023 19:42:00 +0200
Subject: [PATCH] Fix opaque MIDI region rendering

This issue was introduced in e79d8b00f98700194df786288792362268a8bea7.
---
 libs/ardour/midi_playlist.cc | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/libs/ardour/midi_playlist.cc b/libs/ardour/midi_playlist.cc
index 65b35f5861..f16e357c01 100644
--- a/libs/ardour/midi_playlist.cc
+++ b/libs/ardour/midi_playlist.cc
@@ -329,11 +329,14 @@ MidiPlaylist::render (MidiChannelFilter* filter)
 	for (auto i = ++regs.begin(); i != regs.end(); ++i) {
 		if ((*i)->opaque ()) {
 			all_transparent = false;
-			break;
 		}
 		if ((*i)->layer () != layer) {
 			no_layers = false;
 		}
+		if (!all_transparent && !no_layers) {
+			/* no need to check further */
+			break;
+		}
 	}
 
 	Evoral::EventList<samplepos_t> evlist;