From 702089224f37ace6486cca6e08f431ad6e4fa742 Mon Sep 17 00:00:00 2001
From: Will Scullin <scullin@scullin.com>
Date: Mon, 9 May 2022 11:51:12 -0700
Subject: [PATCH] Clear whole screen during refresh (#108)

---
 js/gl.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/js/gl.ts b/js/gl.ts
index 03fde8c..4596438 100644
--- a/js/gl.ts
+++ b/js/gl.ts
@@ -797,6 +797,8 @@ export class VideoModesGL implements VideoModes {
         const gr = this._grs[this.pageMode - 1];
 
         if (this._refreshFlag) {
+            const { width, height } = screenEmu.C.NTSC_DETAILS.imageSize;
+            this.context.clearRect(0, 0, width, height);
             hgr.refresh();
             gr.refresh();
             this._refreshFlag = false;