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Speed up playlist rendering of non-overlapping MIDI Regions

This commit is contained in:
Robin Gareus 2023-05-14 17:50:26 +02:00
parent bcafa3d6aa
commit e79d8b00f9
Signed by: rgareus
GPG Key ID: A090BCE02CF57F04
1 changed files with 7 additions and 1 deletions
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8
libs/ardour/midi_playlist.cc
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@ -335,6 +335,9 @@ MidiPlaylist::render (MidiChannelFilter* filter)
regs.sort (cmp);
bool all_transparent = true;
bool no_layers = true;
layer_t layer = regs.front()->layer ();
/* skip bottom-most region, transparency is irrelevant */
for (auto i = ++regs.begin(); i != regs.end(); ++i) {
@ -342,11 +345,14 @@ MidiPlaylist::render (MidiChannelFilter* filter)
all_transparent = false;
break;
}
if ((*i)->layer () != layer) {
no_layers = false;
}
}
Evoral::EventList<samplepos_t> evlist;
if (all_transparent) {
if (all_transparent || no_layers) {
DEBUG_TRACE (DEBUG::MidiPlaylistIO, string_compose ("\t%1 regions to read\n", regs.size()));