Bug 47913

Summary: [chromium] Disable mipmapping of ImageLayer's to conserve CPU and VRAM
Product: WebKit Reporter: Vangelis Kokkevis <vangelis>
Component: WebCore Misc.Assignee: Vangelis Kokkevis <vangelis>
Status: RESOLVED FIXED    
Severity: Normal CC: kbr, wjmaclean
Priority: P2    
Version: 528+ (Nightly build)   
Hardware: PC   
OS: OS X 10.5   
Attachments:
Description Flags
proposed patch kbr: review+

Vangelis Kokkevis
Reported 2010-10-19 11:00:16 PDT
Mipmapping for ImageLayers was enabled with: https://bugs.webkit.org/show_bug.cgi?id=46493 However, it turns out that a lot of regular HTML content makes no use of mipmap levels since images are drawn untransformed and in their source resolution. In addition, mipmaping seems to have tickled an ANGLE bug: http://code.google.com/p/chromium/issues/detail?id=59426 A possible alternative solution once the ANGLE bug is resolved would be to turn on mipmapping only for layers that are displayed at a smaller size that would make effective use of the gpu.
Attachments
proposed patch (6.79 KB, patch)
2010-10-19 11:11 PDT, Vangelis Kokkevis 		kbr: review+
DetailsFormatted DiffDiff
View All Add attachment proposed patch, testcase, etc.
Vangelis Kokkevis
Comment 1 2010-10-19 11:11:12 PDT
Created attachment 71187 [details] proposed patch
Kenneth Russell
Comment 2 2010-10-19 11:14:29 PDT
Comment on attachment 71187 [details] proposed patch Verified that this patch is a reversion of the earlier one.
Vangelis Kokkevis
Comment 3 2010-10-19 12:39:14 PDT
Committed r70075: <http://trac.webkit.org/changeset/70075>
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