From f77b4633399925508c48a225a6fd8c321b523ae2 Mon Sep 17 00:00:00 2001
From: Jonas Jenwald <jonas.jenwald@gmail.com>
Date: Wed, 31 Oct 2018 16:22:17 +0100
Subject: [PATCH] Attempt to clean-up/restore pending rendering operations on
 `RenderTask.cancel` (issue 10200)

Please note that, given the lack of a runnable example, I'm not totally sure if this first of all is enough to *completely* address the issue as filed and second of all if we actually want this new behaviour.
---
 src/display/api.js | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/display/api.js b/src/display/api.js
index ca192afe4..969d6c62a 100644
--- a/src/display/api.js
+++ b/src/display/api.js
@@ -2439,6 +2439,9 @@ var InternalRenderTask = (function InternalRenderTaskClosure() {
     cancel: function InternalRenderTask_cancel() {
       this.running = false;
       this.cancelled = true;
+      if (this.gfx) {
+        this.gfx.endDrawing();
+      }
       if (this._canvas) {
         canvasInRendering.delete(this._canvas);
       }