Jiggly text on Zoom Animation
Categories
(Core :: Graphics: WebRender, defect, P3)
Tracking
()
| Tracking | Status | |
|---|---|---|
| firefox78 | --- | fixed |
People
(Reporter: mayankleoboy1, Assigned: aosmond)
References
(Blocks 1 open bug, Regressed 1 open bug)
Details
Attachments
(1 file)
Go to http://delhidentalcouncil.in/Registration/Contact.aspx
Scroll to the bottom where there are 3 boxes.
Hover mouse on any of the boxes
The text jiggles, and appears to shift horizontally
|
Reporter | |
Comment 1•4 years ago
|
||
Could be a dupe of multiple WR snapping issue bugs
|
Assignee | |
Updated•4 years ago
|
|
|
Assignee | |
Comment 2•4 years ago
|
||
The glyphs no longer wiggle after bug 1604241 landed, but they still shimmer as the animation progresses.
|
|
Assignee | |
Comment 3•4 years ago
|
||
Turns out, this is not snapping. This is a texture sampling problem, when the edge of the glyph also at the end of the texture. Adding padding around the texture solves the shimmering. Patch in progress.
|
|
Assignee | |
Comment 4•4 years ago
|
||
When we animate text, we rasterize the glyphs in an arbitrary local
space once, and scale them during the animation. Some glyphs may be
pressed against the edge of the texture, resulting in artifacts due to
how the sampling works in the shader. This patch fixes the sampling
issues by padding glyph textures with an extra transparent pixel border.
This only applies to glyphs that are rasterized in local space.
This patch does not add the extra padding for Mac because it is already
padding its glyphs for Mac-specific reasons, and does not appear to be
as suspectible to the problem.
Pushed by aosmond@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/ccc51104ad42 Fix glyph distortion during animations. r=lsalzman
|
||
Comment 6•4 years ago
|
||
| bugherder | ||
|
|
Assignee | |
Comment 7•4 years ago
|
||
It still happens a little bit, but far less noticeable than before. This is within the range we should expect.
Description
•