From a20a4c0029506763f9dbfcc7cdd5e860b99dcafd Mon Sep 17 00:00:00 2001
From: Jean Pierre Cimalando <jp-dev@inbox.ru>
Date: Sun, 27 Sep 2020 11:25:43 +0200
Subject: [PATCH] flexEG: If stage is of zero duration, immediate transition to
 level

---
 src/sfizz/FlexEnvelope.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/sfizz/FlexEnvelope.cpp b/src/sfizz/FlexEnvelope.cpp
index 70dc0948..c58d3ae5 100644
--- a/src/sfizz/FlexEnvelope.cpp
+++ b/src/sfizz/FlexEnvelope.cpp
@@ -144,6 +144,9 @@ void FlexEnvelope::Impl::process(absl::Span<float> out)
         const bool isReleased = isReleased_;
         while ((!stageSustained_ && currentTime_ >= stageTime_) ||
                (stageSustained_ && isReleased)) {
+            // If stage is of zero duration, immediate transition to level
+            if (!stageSustained_ && stageTime_ == 0)
+                currentLevel_ = stageTargetLevel_;
             if (!advanceToNextStage()) {
                 out.remove_prefix(frameIndex);
                 fill(out, 0.0f);