[Webkit-unassigned] [Bug 142119] fast/canvas/canvas-ellipse-zero-lineto.html failing on Apple Windows

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=142119

--- Comment #5 from Brent Fulgham <bfulgham at webkit.org> ---
See the screenshot "Comparison" to see the slight differences between the two drawing libraries. The top "arrow" is the Mac version, the bottom is the WIndows one.

Antialiasing seems different on the two platforms.

The drawing commands are identical:

ctx.beginPath();
ctx.lineTo(10, 0);
ctx.ellipse(20, 0, 20, zero, Math.PI / 6, -Math.PI / 4, Math.PI / 2, false);
ctx.lineTo(80, 0);
ctx.stroke();
ctx.restore();

imageData = ctx.getImageData(232, 69, 1, 1); // Should be black, but WIndows is '7' (not '0')
imageData = ctx.getImageData(238, 72, 1, 1); // Should be White, and both are.
imageData = ctx.getImageData(228, 65, 1, 1); // Should be black, and both are.
imageData = ctx.getImageData(242, 61, 1, 1); // Should be black, and both are.

This might be a drawing difference in the rendering libraries used on the two platforms.

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