Bug 79852

Summary:

Optimize the rects being drawn into compositing layers

Product:

WebKit

Reporter:

Simon Fraser (smfr) <simon.fraser>

Component:

Layout and Rendering

Assignee:

Simon Fraser (smfr) <simon.fraser>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

dino, mitz, simon.fraser, thorton

Priority:

Keywords:

InRadar

Version:

528+ (Nightly build)

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Patch	mitz: review+

Description Simon Fraser (smfr) 2012-02-28 17:51:53 PST

We should make sure that we're not drawing more than necessary in composting layers because of rect coalescing.

Comment 1 Simon Fraser (smfr) 2012-02-28 18:14:09 PST

Created attachment 129370 [details]
Patch

Comment 2 mitz 2012-02-28 18:49:12 PST

Comment on attachment 129370 [details]
Patch

In drawRect: we examine the total area of all texts and do a single paint if they cover a sufficiently large fraction of the clip bounds. I wonder if we don't need something similar here.

Comment 3 mitz 2012-02-28 18:50:24 PST

s/texts/rects/.

Comment 4 Simon Fraser (smfr) 2012-02-28 20:19:19 PST

I wonder that too. I'll look to see if CA does that already.

Comment 5 Simon Fraser (smfr) 2012-02-28 20:47:50 PST

http://trac.webkit.org/changeset/109186

Comment 6 Simon Fraser (smfr) 2012-11-28 16:52:34 PST

<rdar://problem/9082399>

Comment 7 Simon Fraser (smfr) 2012-11-28 16:56:58 PST

This change was made to help http://ie.microsoft.com/testdrive/performance/mazesolver/default.html performance.