28843 – text redraw bugs in plexode snake demo

Bug 28843 - text redraw bugs in plexode snake demo

Summary: text redraw bugs in plexode snake demo

Status:	NEW

Alias:	None

Product:	WebKit
Classification:	Unclassified
Component:	Layout and Rendering (show other bugs)
Version:	528+ (Nightly build)
Hardware:	PC OS X 10.5

Importance:	P2 Normal
Assignee:	Nobody

URL:	http://www.plexode.com/cgi-bin/eval3....
Keywords:

Depends on:
Blocks:

Reported:	2009-08-31 02:10 PDT by Eric Seidel (no email)
Modified:	2024-04-19 12:37 PDT (History)
CC List:	8 users (show)

See Also:

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Description Eric Seidel (no email) 2009-08-31 02:10:30 PDT

text redraw bugs in plexode snake demo

http://www.plexode.com/cgi-bin/eval3.py#ht=DUDE%20OMG%20%3Cb%20id%3D%22wave%22%20style%3D%22font-size%3A150%25%3B%20color%3Agreen%22%3E%3C%2Fb%3E%20IT%20IS%20A%20SNAKE&ohh=1&ohj=1&jt=var%20a%20%3D%20[]%3B%0Avar%20n%20%3D%20(new%20Date()).getTime()%3B%0Afor%20(var%20i%20%3D%200%3B%20i%20%3C%2020%3B%20%2B%2Bi)%20{%0A%20%20var%20s%20%3D%20Math.sin(n%2F210%20%2B%20i%2F1.1)%20*%2025%20%2B%20Math.sin(n%2F240%20%2B%20i%2F3)%20*%2025%3B%0A%20%20var%20c%20%3D%20-Math.cos(n%2F200%20%2B%20i%2F2)%20*%2025%20-%20Math.cos(n%2F260%20%2B%20i%2F2.9)%20*%2025%3B%0A%20%20a.push(%27%3Cb%20style%3D%22position%3Arelative%3Bleft%3A%27%2C%20s%2C%20%27px%3Btop%3A%27%2C%20c%2C%20%27px%22%3Es%3C%2Fb%3E%20%27)%3B%0A}%0Agebi(%27wave%27).innerHTML%20%3D%20a.join(%27%27)%3B%0A%0An%20%25%20100000%3B%0A&ojh=1&ojj=1&ms=30&oth=0&otj=1&cex=1

CCing Hyatt and Mitz as they often work on these sorts of bugs.

Comment 1 Ahmad Saleem 2024-04-19 12:17:05 PDT

> Safari Dev Tools > Layers > Enable Paint Flashing and open side bar to see paint and notice the area of painting.

Repeat in Chrome Developer Tools > Run Command > 'show paint flashing rectangles'

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Chrome seems to only paint limited area while Safari is painting larger area.

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@Vitor - I just noticed this but my testing could be wrong, so I CCed - Alan and Simon for their insight as well (another opportunity to learn something new here).

Comment 2 zalan 2024-04-19 12:37:41 PDT

This could very well be just us repainting one (certainly larger) area instead of many small ones. Needs debugging. This doesn't have much to do with _text_ itself though.