[Webkit-unassigned] [Bug 83082] New: [chromium] Add support for antialiasing of clipped quads

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=83082

           Summary: [chromium] Add support for antialiasing of clipped
                    quads
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: shawnsingh at chromium.org
                CC: vangelis at chromium.org, enne at google.com,
                    reveman at chromium.org, shawnsingh at chromium.org,
                    danakj at chromium.org
        Depends on: 80806


https://bugs.webkit.org/show_bug.cgi?id=80806 fixes a bug about disappearing layers that requires that layers to be geometrically clipped.  In that bug, we're opting to bypass anti-aliasing for clipped layers, because its a potentially messy case.  This bug is a follow-up to 80806 to add anti-aliasing support for clipped quads.

David and I talked offline.  Some options to consider:

1. Draw the bounding box of the clipped geometry itself, and push the transform complexity to the texture coordinates.

2. Figure out the correct inflation amount in local space, that corresponds to 0.5 pixels in device space.  It is possible to issue the original un-transformed quad to the GPU, and the GPU will handle correct clipping.

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.