[Webkit-unassigned] [Bug 217550] New: [GPU Process]: Replace "ImageBufferIdentifier" by a generic identifier named "RemoteResourceIdentifier"
bugzilla-daemon at webkit.org
bugzilla-daemon at webkit.org
Fri Oct 9 18:34:36 PDT 2020
https://bugs.webkit.org/show_bug.cgi?id=217550
Bug ID: 217550
Summary: [GPU Process]: Replace "ImageBufferIdentifier" by a
generic identifier named "RemoteResourceIdentifier"
Product: WebKit
Version: WebKit Nightly Build
Hardware: Unspecified
OS: Unspecified
Status: NEW
Severity: Normal
Priority: P2
Component: Layout and Rendering
Assignee: webkit-unassigned at lists.webkit.org
Reporter: sabouhallawa at apple.com
CC: bfulgham at webkit.org, simon.fraser at apple.com,
zalan at apple.com
GPU Process needs to manage all the drawing resources and the drawing buffers/layers the same way. For example an HTMLCanvasElement is backed by a drawing buffer called ImageBuffer. All the drawing to the context of this HTMLCanvasElement is supposed to be done in this ImageBuffer. But at the same time this HTMLCanvasElement can be treated as a drawing resources when it is drawn to another HTMLCanvasElement through the method drawImage().
So RemoteResourceIdentifier will be the identifier of the ImageBuffer when drawing is happening to its context in the GPU process. And it will be the identifier of the image which will be drawn to anther buffer or layer in the GPU Process. The goal is to avoid copying the image from Web Process to GPU Process and use RemoteResourceIdentifier instead.
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