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Auto merge of #26065 - dralley:fix-motionmark, r=cbrewster,SimonSapin

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Don't send empty canvases to WebRender

If any dimension of a canvas is 0, don't try to display it as it causes
problems inside webrender.

Minimal test case available here: https://github.com/servo/servo/issues/21411#issuecomment-605226547

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bors-servo 2020-04-03 13:57:33 -04:00 • committed by GitHub
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7
tests/wpt/mozilla/meta/MANIFEST.json
View file

@ -14591,6 +14591,13 @@
null,
{}
]
],
"zero_size_canvas_crash.html": [
"45eb9b559e8d6105baca5ab4d336de520d33b36b",
[
null,
{}
]
]
},
"webxr": {

13
tests/wpt/mozilla/tests/mozilla/zero_size_canvas_crash.html Normal file
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@ -0,0 +1,13 @@
<!doctype html>
<meta charset="utf-8">
<title>Test for #21411: Panic when putting a zero-sized canvas on the display list.</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<canvas id="myCanvas" width="0" height="0" style="width:10px; height:10px;"></canvas>
<script>
test(function () {
var c = document.getElementById("myCanvas");
var ctx = c.getContext("2d");
ctx.clearRect(0, 0, c.width, c.height);
}, "Doesn't crash when the page has a canvas with a zero-dimension");
</script>