| Index: third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-2d-drawImage-no-context.html
|
| diff --git a/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-2d-drawImage-no-context.html b/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-2d-drawImage-no-context.html
|
| new file mode 100644
|
| index 0000000000000000000000000000000000000000..e44e9b3c37d21994b47f6408d37fb7ca582e4aa4
|
| --- /dev/null
|
| +++ b/third_party/WebKit/LayoutTests/fast/canvas/OffscreenCanvas-2d-drawImage-no-context.html
|
| @@ -0,0 +1,22 @@
|
| +<!DOCTYPE HTML>
|
| +<script src="../../resources/testharness.js"></script>
|
| +<script src="../../resources/testharnessreport.js"></script>
|
| +<script>
|
| +test(function() {
|
| + var offscreenCanvas = new OffscreenCanvas(100, 50);
|
| + var ctx = offscreenCanvas.getContext('2d');
|
| + ctx.fillStyle = "#0f0";
|
| + ctx.fillRect(0, 0, 100, 50);
|
| + // The default globalCompositeOperation is source-over, that that will
|
| + // draw nothing in the next drawImage call. So we have to change it to copy
|
| + // so that it will actually draw transparent black in the next drawImage
|
| + // call.
|
| + ctx.globalCompositeOperation = 'copy';
|
| +
|
| + var offscreenCanvas2 = new OffscreenCanvas(100, 50);
|
| + ctx.drawImage(offscreenCanvas2, 0, 0);
|
| +
|
| + var clr = ctx.getImageData(50, 25, 1, 1).data;
|
| + assert_array_equals(clr, [0, 0, 0, 0]);
|
| +}, 'Use OffscreenCanvas without a context as ImageSource should draw transparent black');
|
| +</script>
|
|
|
Chromium Code Reviews
Issue 2550443002:
Fix a minor issue in OffscreenCanvas.drawImage (Closed)
