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Unified Diff: third_party/WebKit/LayoutTests/transforms/opacity-forces-flatten.html

Issue 2065233002: Force flattening for elements with non-initial value of opacity (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: fix assert. (overflow needs to be adjusted prior to querying used transform-style) Created 4 years, 6 months ago
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Index: third_party/WebKit/LayoutTests/transforms/opacity-forces-flatten.html
diff --git a/third_party/WebKit/LayoutTests/transforms/opacity-forces-flatten.html b/third_party/WebKit/LayoutTests/transforms/opacity-forces-flatten.html
new file mode 100644
index 0000000000000000000000000000000000000000..64cc1309b8f6181101b2c98dcf7acd10ab5d7aff
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/transforms/opacity-forces-flatten.html
@@ -0,0 +1,46 @@
+<!DOCTYPE html>
+<style>
+#root {
+ transform-style: preserve-3d;
+}
+
+#transparent {
+ opacity: 0.5;
+ width: 100px;
+ height: 100px;
+ background: red;
+ transform: translate3d(0,0,30px);
+ transform-style: preserve-3d;
+}
+
+#child1 {
+ width: 100px;
+ height: 100px;
+ background: green;
+ transform: translate3d(50px,0,-20px);
+}
+
+#child2 {
+ width: 80px;
+ height: 80px;
+ background: black;
+ transform: translate3d(35px,-60px,-30px);
+}
+
+#sibling {
+ width: 100px;
+ height: 100px;
+ background: blue;
+ transform: translate3d(25px,-50px,20px);
+}
+</style>
+<div id="root">
+ <div id="transparent">
+ <div id="child1"></div>
+ <div id="child2"></div>
+ </div>
+ <div id="sibling"></div>
+</div>
+The purpose of this test is to verify that non-initial value of opacity forces the used value of
+transform-style to be flat. The rendered result should be the same as if transform-style:preserve-3d
+was not specified on the transparent element.

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