[Webkit-unassigned] [Bug 86275] New: [Chromium] Support for direct GPU texture copy between Canvas2D and WebGL Textures

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=86275

           Summary: [Chromium] Support for direct GPU texture copy between
                    Canvas2D and WebGL Textures
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebGL
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: twiz at chromium.org


Calls to WebGL's texImage2D interface with Canvas2D elements incur a costly software read-back for hardware accelerated instances of Canvas2D.

A fast path should be implemented, allowing for a direct copy between the GPU textures.  The GL_CHROMIUM_copy_texture extension was designed for this purpose. (crrev.com/133213)

Issue tracked also at crbug.com/101051

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