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Unified Diff: third_party/WebKit/LayoutTests/paint/subpixel/subpixel-accumulation-with-fixedpos.html

Issue 2112753002: Snap paint offset paint property to pixel boundaries (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: Add more tests, cleanup comments Created 4 years, 6 months ago
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Index: third_party/WebKit/LayoutTests/paint/subpixel/subpixel-accumulation-with-fixedpos.html
diff --git a/third_party/WebKit/LayoutTests/paint/subpixel/subpixel-accumulation-with-fixedpos.html b/third_party/WebKit/LayoutTests/paint/subpixel/subpixel-accumulation-with-fixedpos.html
new file mode 100644
index 0000000000000000000000000000000000000000..37ed9df5719210a8cbe9de9c73c5d5b16ff72132
--- /dev/null
+++ b/third_party/WebKit/LayoutTests/paint/subpixel/subpixel-accumulation-with-fixedpos.html
@@ -0,0 +1,12 @@
+<!DOCTYPE html>
+PASS if there is no red visible.
+<div style="background: white; width: 100px; height: 100px; position: relative; left: 0.7px;">
chrishtr 2016/06/30 16:57:17 Unittest with fixed-pos also?
pdr. 2016/06/30 18:54:48 Added PaintPropertyTreeBuilderTest.PaintOffsetWith
+ <div style="background: white; width: 70px; height: 70px; position: relative; transform: translateZ(0);">
+ <div style="background: red; width: 40px; height: 40px; position: fixed;">
+ <!-- Because the first div is snapped up to (1,1), this div will start with a -->
+ <!-- paint offset of (-0.3,-0.3) which will be added to (0.7,0.7) to get -->
+ <!-- (0.4,0.4) which rounds down to (0,0) and obscures the red divs. -->
+ <div style="width: 40px; height: 40px; background: white; position: relative; left: 0.7px;"></div>
+ </div>
+ </div>
+</div>
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