Index: third_party/WebKit/LayoutTests/fast/canvas/canvas-toBlob-toDataURL-race-imageEncoder-png.html |
diff --git a/third_party/WebKit/LayoutTests/fast/canvas/canvas-toBlob-toDataURL-race-imageEncoder-png.html b/third_party/WebKit/LayoutTests/fast/canvas/canvas-toBlob-toDataURL-race-imageEncoder-png.html |
new file mode 100644 |
index 0000000000000000000000000000000000000000..4e70861fa7b5644febfedd47c21023ed4ca0f01b |
--- /dev/null |
+++ b/third_party/WebKit/LayoutTests/fast/canvas/canvas-toBlob-toDataURL-race-imageEncoder-png.html |
@@ -0,0 +1,21 @@ |
+<script src = "../../resources/js-test.js"></script> |
+<script src = "./script-tests/canvas-toBlob-toDataURL-race.js"></script> |
+<script type = 'text/javascript'> |
+description("Verifies if PNG image encoding on main thread (toDataURL) conflicts with image encoding on async thread (toBlob)"); |
+ |
+//Fire a bunch of toBlob operations of canvas to keep the async thread busy |
+var j = 0; // due to async nature of toBlob we need a separate counter |
+for (var i = 0; i < numToBlobCalls; i++) |
+{ |
+ canvas.toBlob(function(blob) { |
+ url = URL.createObjectURL(blob); |
+ testImages[j++].src = url; |
+ }); |
+} |
+ |
+//Then file a bunch of toDataURL operation on main thread, so both threads now compete for image encoding |
+for (var i = numToBlobCalls; i < (numToDataURLCalls + numToBlobCalls); i++) |
+{ |
+ testImages[i].src = canvas.toDataURL(); |
+} |
+</script> |