Bug 124234

Summary:	Merging SATURATED_LAYOUT_ARITHMETIC flag into SUBPIXEL_LAYOUT
Product:	WebKit	Reporter:	Javier Fernandez <jfernandez>
Component:	Layout and Rendering	Assignee:	Nobody <webkit-unassigned>
Status:	RESOLVED FIXED
Severity:	Normal	CC:	jfernandez, mrobinson, simon.fraser, syoichi, zalan, zan
Priority:	P2
Version:	528+ (Nightly build)
Hardware:	Unspecified
OS:	Unspecified
Bug Depends on:	119273
Bug Blocks:	102387, 109975, 115437, 125071

Description Javier Fernandez 2013-11-12 14:27:03 PST

The SATURATED_LAYOUT_ARITHMETIC flag is intended to protect against potential arithmetic overflow certain layout and rendering operations once the SUBPIXEL_LAYOUT is enabled. After some discussion in the mailing list, it seems that enabling SATURATED_LAYOUT_ARITHMETIC whenever the SUBPIXEL_LAYOUT flag is enabled is more than recommended. 

Since the SATURATED_LAYOUT_ARITHMETIC flag makes no sense without SUBPIXEL_LAYOUT, actually there is an assertion preventing this, it seems that the most sensible action is to merge the SATURATED_LAYOUT_ARITHMETIC logic into the SUBPIXEL_LAYOUT, and eventually removing it.

Comment 1 zalan 2014-08-21 14:43:26 PDT

fixed by bug 136106