From 2781f1d2c1dea7721e27a1935091a95b3b7e944c Mon Sep 17 00:00:00 2001
From: tildearrow <me@tildearrow.org>
Date: Thu, 7 Sep 2023 18:16:06 -0500
Subject: [PATCH] GUI: no. for REAL this time.

---
 src/gui/gui.cpp | 2 ++
 src/gui/osc.cpp | 6 +++---
 2 files changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/gui/gui.cpp b/src/gui/gui.cpp
index 4c3ffece7..30ddd43c9 100644
--- a/src/gui/gui.cpp
+++ b/src/gui/gui.cpp
@@ -4521,6 +4521,8 @@ bool FurnaceGUI::loop() {
       MEASURE(log,drawLog());
       MEASURE(compatFlags,drawCompatFlags());
       MEASURE(stats,drawStats());
+      MEASURE(readOsc,readOsc());
+      MEASURE(osc,drawOsc());
       MEASURE(chanOsc,drawChanOsc());
       MEASURE(regView,drawRegView());
     } else {
diff --git a/src/gui/osc.cpp b/src/gui/osc.cpp
index 285d7a1fd..ac4105a37 100644
--- a/src/gui/osc.cpp
+++ b/src/gui/osc.cpp
@@ -60,7 +60,7 @@ void FurnaceGUI::readOsc() {
     float posFrac=0.0;
     int posInt=oscReadPos-8;
     float factor=(float)oscWidth/(float)winSize;
-    for (int i=-8; i<oscWidth+8; i++) {
+    for (int i=-8; i<oscWidth; i++) {
       if (i>=0 && i<oscWidth) {
         oscValues[ch][i]+=e->oscBuf[ch][posInt&0x7fff];
       }
@@ -76,10 +76,10 @@ void FurnaceGUI::readOsc() {
         float delta=e->oscBuf[ch][posInt&0x7fff]-e->oscBuf[ch][(posInt-1)&0x7fff];
 
         for (int j=0; j<8; j++) {
-          if (i-j>=0) {
+          if ((i-j)>=0 && (i-j)<oscWidth) {
             oscValues[ch][i-j]+=t1[j]*-delta;
           }
-          if (i+j+1<oscWidth) {
+          if ((i+j+1)>=0 && (i+j+1)<oscWidth) {
             oscValues[ch][i+j+1]+=t2[j]*delta;
           }
         }