[Webkit-unassigned] [Bug 93623] New: [CSS Shaders] Add blend mode and composite op to compiled program cache key

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=93623

           Summary: [CSS Shaders] Add blend mode and composite op to
                    compiled program cache key
           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: mvujovic at adobe.com
                CC: achicu at adobe.com
            Blocks: 85086


Right now, only the vertex shader string and the fragment shader string are hashed to create a key for the compiled program. However, when authors use the mix function to specify a blend mode and/or composite op for a fragment shader, WebKit will rewrite the fragment shader based on the blend mode and composite op. This means the unique key for a compiled program is (original vertex shader string, original fragment shader string, blend mode, composite operator). This patch will include blend mode and composite operator in the hash for the key.

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