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Diffstat (limited to 'testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html')
| -rw-r--r-- | testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html new file mode 100644 index 0000000000..a328fbf97a --- /dev/null +++ b/testing/web-platform/tests/html/canvas/element/manual/context-attributes/clearRect_alpha_false.html @@ -0,0 +1,15 @@ +<!DOCTYPE html> +<meta charset="utf-8"> +<title>CanvasRenderingContext 2D with alpha=flase, clearRect</title> +<link rel="author" title="Justin Novosad" href="mailto:junov@chromium.org"> +<link rel="help" href="https://html.spec.whatwg.org/#concept-canvas-alpha"> +<link rel="match" href="clearRect_alpha_false-ref.html"> +<meta name="assert" content="Canvas pixels remain opaque black when drawing semi-transparent rectangle."> +<p>Test passes if a 100x100 black square is displayed below.</p> +<canvas id="c" width=100 height=100></canvas> +<script> +const ctx = document.getElementById("c").getContext("2d", {alpha: false}); +ctx.fillColor = 'red'; +ctx.fillRect(25, 25, 50, 25); +ctx.clearRect(24, 24, 52, 52); +</script> |