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Clamp device pixel ratio to a minimum of 1 for calculating pixelDensityRatio.

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A lower value can cause tile drawing issues.
This commit is contained in:
larissasmith 2017-05-18 15:17:02 -06:00
parent b941864ac5
commit 23cba35ea0
1 changed files with 1 additions and 1 deletions
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2
src/openseadragon.js
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@ -880,7 +880,7 @@ function OpenSeadragon( options ){
context.msBackingStorePixelRatio ||
context.oBackingStorePixelRatio ||
context.backingStorePixelRatio || 1;
return devicePixelRatio / backingStoreRatio;
return Math.max(devicePixelRatio, 1) / backingStoreRatio;
} else {
return 1;
}