From 3643f9ec98298c8aa8aa071844295f25fd3a7e55 Mon Sep 17 00:00:00 2001
From: mike-000 <49240900+mike-000@users.noreply.github.com>
Date: Thu, 30 Apr 2020 13:04:30 +0100
Subject: [PATCH] Use BrokenDiagonalRendering with contextOptions

Apply the BrokenDiagonalRendering processing if opt_contextOptions is set to avoid color distortion along reprojection edges
---
 src/ol/reproj.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/ol/reproj.js b/src/ol/reproj.js
index 274f732ff3..6a511bf04d 100644
--- a/src/ol/reproj.js
+++ b/src/ol/reproj.js
@@ -1,7 +1,7 @@
 /**
  * @module ol/reproj
  */
-import {assign} from './obj.js';
+import {assign, isEmpty} from './obj.js';
 import {
   containsCoordinate,
   createEmpty,
@@ -330,7 +330,7 @@ export function render(
     context.save();
     context.beginPath();
 
-    if (isBrokenDiagonalRendering()) {
+    if (isBrokenDiagonalRendering() || !isEmpty(opt_contextOptions)) {
       // Make sure that everything is on pixel boundaries
       const u0r = pixelRound(u0);
       const v0r = pixelRound(v0);