diff options
Diffstat (limited to 'testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html')
-rw-r--r-- | testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html new file mode 100644 index 0000000000..4590a2ea1f --- /dev/null +++ b/testing/web-platform/tests/html/canvas/offscreen/compositing/2d.composite.globalAlpha.image.html @@ -0,0 +1,30 @@ +<!DOCTYPE html> +<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. --> +<title>OffscreenCanvas test: 2d.composite.globalAlpha.image</title> +<script src="/resources/testharness.js"></script> +<script src="/resources/testharnessreport.js"></script> +<script src="/html/canvas/resources/canvas-tests.js"></script> + +<h1>2d.composite.globalAlpha.image</h1> +<p class="desc"></p> + + +<script> +promise_test(async t => { + + var canvas = new OffscreenCanvas(100, 50); + var ctx = canvas.getContext('2d'); + + ctx.fillStyle = '#0f0'; + ctx.fillRect(0, 0, 100, 50); + // Avoiding any potential alpha = 0 optimisations. + ctx.globalAlpha = 0.01; + const response = await fetch('/images/red.png'); + const blob = await response.blob(); + const bitmap = await createImageBitmap(blob); + + ctx.drawImage(bitmap, 0, 0); + _assertPixelApprox(canvas, 50,25, 2,253,0,255, 2); + +}, ""); +</script> |