[Webkit-unassigned] [Bug 36248] New: Implement lazy clearing of renderbuffers

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=36248

           Summary: Implement lazy clearing of renderbuffers
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: kbr at google.com
                CC: zmo at google.com


Per the section of the WebGL spec on Resource Restrictions (currently Section
4.2), the contents of renderbuffers must be initialized before their first use,
so that garbage can not be read back from them. To implement this, when a
renderbuffer is first attached to a complete FBO, or when an FBO becomes
complete and it has uninitialized renderbuffers attached, the appropriate
planes of the FBO must be cleared.

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