[Webkit-unassigned] [Bug 241511] New: WebGLRenderingContextBase::clearIfComposited must preserve indexed color write masks

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=241511

            Bug ID: 241511
           Summary: WebGLRenderingContextBase::clearIfComposited must
                    preserve indexed color write masks
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: lexa.knyazev at gmail.com
                CC: dino at apple.com, kbr at google.com, kkinnunen at apple.com

When OES_draw_buffers_indexed is enabled, clearIfComposited must not change color write masks for non-zero draw buffers and it must properly restore the original mask upon completion.

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