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-rw-r--r--layout/reftests/pixel-rounding/background-image-tiling.html291
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diff --git a/layout/reftests/pixel-rounding/background-image-tiling.html b/layout/reftests/pixel-rounding/background-image-tiling.html
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+++ b/layout/reftests/pixel-rounding/background-image-tiling.html
@@ -0,0 +1,291 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN"
+ "http://www.w3.org/TR/html4/strict.dtd">
+<html lang="en-US">
+<head>
+ <title>Pixel rounding of background image tiling</title>
+ <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
+ <meta http-equiv="Content-Style-Type" content="text/css">
+ <style type="text/css">
+
+ body { background: black; }
+
+ .set {
+ height: 60px;
+ position: relative;
+ }
+
+ .item {
+ position: absolute;
+ width: 10px;
+ height: 10px;
+ }
+
+ .item1 { left: 0px; }
+ .item2 { left: 15px; }
+ .item3 { left: 30px; }
+ .item4 { left: 45px; }
+ .item5 { left: 60px; }
+
+ .tl {
+ top: 0px;
+ background-image: url(corner-tl.png);
+ background-position: top left;
+ }
+
+ .tr {
+ top: 15px;
+ background-image: url(corner-tr.png);
+ background-position: top right;
+ }
+
+ .bl {
+ top: 30px;
+ background-image: url(corner-bl.png);
+ background-position: bottom left;
+ }
+
+ .br {
+ top: 45px;
+ background-image: url(corner-br.png);
+ background-position: bottom right;
+ }
+
+ .varydim .item1 { height: 10.0px; width: 11.0px; }
+ .varydim .item2 { height: 10.4px; width: 10.6px; }
+ .varydim .item3 { height: 10.5px; width: 10.5px; }
+ .varydim .item4 { height: 10.6px; width: 10.4px; }
+ .varydim .item5 { height: 11.0px; width: 10.0px; }
+
+ .varypos .item1 { margin-top: 0.0px; margin-left: 1.0px; }
+ .varypos .item2 { margin-top: 0.4px; margin-left: 0.6px; }
+ .varypos .item3 { margin-top: 0.5px; margin-left: 0.5px; }
+ .varypos .item4 { margin-top: 0.6px; margin-left: 0.4px; }
+ .varypos .item5 { margin-top: 1.0px; margin-left: 0.0px; }
+
+ .varydim.athalf .item {
+ margin-top: 0.5px; margin-left: 0.5px;
+ }
+
+ .varypos.athalf .item {
+ width: 10.5px; height: 10.5px;
+ }
+
+ .border .item {
+ /* force the tiling codepath by making sure there are multiple images */
+ border: 1px solid transparent;
+ }
+
+ </style>
+</head>
+<body>
+
+<div class="set varydim">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+<div class="set varypos">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+<div class="set varydim athalf">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+<div class="set varypos athalf">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+<div class="set varydim border">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+<div class="set varypos border">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+<div class="set varydim athalf border">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+<div class="set varypos athalf border">
+ <div class="tl item item1"></div>
+ <div class="tl item item2"></div>
+ <div class="tl item item3"></div>
+ <div class="tl item item4"></div>
+ <div class="tl item item5"></div>
+
+ <div class="tr item item1"></div>
+ <div class="tr item item2"></div>
+ <div class="tr item item3"></div>
+ <div class="tr item item4"></div>
+ <div class="tr item item5"></div>
+
+ <div class="bl item item1"></div>
+ <div class="bl item item2"></div>
+ <div class="bl item item3"></div>
+ <div class="bl item item4"></div>
+ <div class="bl item item5"></div>
+
+ <div class="br item item1"></div>
+ <div class="br item item2"></div>
+ <div class="br item item3"></div>
+ <div class="br item item4"></div>
+ <div class="br item item5"></div>
+</div>
+
+</body>
+</html>