[webkit-reviews] review canceled: [Bug 70634] Mark GraphicsLayers as opaque when possible : [Attachment 116550] Patch

[bugzilla-daemon at webkit.org]

Dana Jansens <danakj at chromium.org> has canceled Dana Jansens
<danakj at chromium.org>'s request for review:
Bug 70634: Mark GraphicsLayers as opaque when possible
https://bugs.webkit.org/show_bug.cgi?id=70634

Attachment 116550: Patch
https://bugs.webkit.org/attachment.cgi?id=116550&action=review

------- Additional Comments from Dana Jansens <danakj at chromium.org>
This patch has some bad effects with WebGL Canvas. In particular, when an image
contents change, we need to determine its opaque status for the RenderLayer's
opaque region. But in order to create an Image* for a generated image, the
contents may change causing a loop where there should not be. This causes a
synchronization issue in the HTMLCanvasElement/WebGL interaction, since it does
not expect to generate an image in its contents changed listeners.