From 0a58628f74b57953d7fec4feef55031f7acb5a5a Mon Sep 17 00:00:00 2001
From: Daniel Imms <daimms@microsoft.com>
Date: Wed, 13 Sep 2017 23:49:34 -0700
Subject: [PATCH] Clear text layer to the background color on creation

Prevents a black flash before the first draw
---
 src/renderer/BaseRenderLayer.ts | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/renderer/BaseRenderLayer.ts b/src/renderer/BaseRenderLayer.ts
index 88dfc26c3..d06e0ee77 100644
--- a/src/renderer/BaseRenderLayer.ts
+++ b/src/renderer/BaseRenderLayer.ts
@@ -33,6 +33,10 @@ export abstract class BaseRenderLayer implements IRenderLayer {
     this._canvas.style.zIndex = zIndex.toString();
     this._ctx = this._canvas.getContext('2d', {alpha});
     this._ctx.scale(window.devicePixelRatio, window.devicePixelRatio);
+    // Draw the background if this is an opaque layer
+    if (!alpha) {
+      this.clearAll();
+    }
     container.appendChild(this._canvas);
   }