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Add check for null compositeOperation option when setting useSketch

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This commit is contained in:
Mei-Hui Su 2016-01-20 09:14:10 -08:00
parent ac0438e07b
commit 91ecd80a4f
1 changed files with 3 additions and 1 deletions
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4
src/tiledimage.js
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@ -1329,7 +1329,9 @@ function drawTiles( tiledImage, lastDrawn ) {
drawDebugInfo( tiledImage, lastDrawn ); drawDebugInfo( tiledImage, lastDrawn );
return; return;
} }
var useSketch = tiledImage.opacity < 1 || tiledImage.compositeOperation !== 'source-over'; var useSketch = tiledImage.opacity < 1 ||
(tiledImage.compositeOperation !== null && tiledImage.compositeOperation !== 'source-over');
var sketchScale; var sketchScale;
var sketchTranslate; var sketchTranslate;