Bug 256087 - WebGL is not able to reuse old display buffers as drawing buffers if the frames are long
Summary: WebGL is not able to reuse old display buffers as drawing buffers if the fram...
Status: NEW
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebGL (show other bugs)
Version: WebKit Local Build
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks: 255987
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Reported: 2023-04-28 05:00 PDT by Kimmo Kinnunen
Modified: 2023-04-28 05:01 PDT (History)
4 users (show)

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Description Kimmo Kinnunen 2023-04-28 05:00:57 PDT 
WebGL is not able to reuse old display buffers as drawing buffers if the frames are long

If the frames are long, but within 16ms, the WebGL is not able to reuse old display buffers as new drawing buffers.

Likely updateRendering() prepares WebGL for display too soon relative to the UI-side compositing committing in-flight frame.

See for example app in bug 255987
Comment 1 Radar WebKit Bug Importer 2023-04-28 05:01:13 PDT 
<rdar://problem/108654803>