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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - toDataURL image upside down if premultipliedAlpha=false"
href="https://bugs.webkit.org/show_bug.cgi?id=156129">156129</a>
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<th>Summary</th>
<td>toDataURL image upside down if premultipliedAlpha=false
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<th>Classification</th>
<td>Unclassified
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<th>Product</th>
<td>WebKit
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<th>Version</th>
<td>WebKit Nightly Build
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<th>Hardware</th>
<td>Unspecified
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<th>OS</th>
<td>Unspecified
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>Normal
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<th>Priority</th>
<td>P2
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<th>Component</th>
<td>WebGL
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<th>Assignee</th>
<td>webkit-unassigned@lists.webkit.org
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<th>Reporter</th>
<td>nkronlage@hotmail.com
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<th>CC</th>
<td>dino@apple.com
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<pre>Calling .toDataURL() on a WebGL canvas that has premultipliedAlpha set to false results in an image that upside down.
See <a href="https://jsfiddle.net/oagpgo80/">https://jsfiddle.net/oagpgo80/</a> for an example. It renders a triangle in a canvas (left) and calls toDataURL and puts the result in an <img> on the right.
Expected:
Two triangles that look the same
Actual:
The right triangle (the image created from toDataURL) is upside down.</pre>
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