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RESOLVED FIXED
129090
WebGL EXT_disjoint_timer_query may now be implemented
https://bugs.webkit.org/show_bug.cgi?id=129090
Summary
WebGL EXT_disjoint_timer_query may now be implemented
Florian Bösch
Reported
2014-02-20 01:58:30 PST
The WebGL extension EXT_disjoint_timer_query was moved to draft:
http://www.khronos.org/registry/webgl/extensions/EXT_disjoint_timer_query/
Vendors are encouraged to consider implementation of this extension.
Attachments
Add attachment
proposed patch, testcase, etc.
Florian Bösch
Comment 1
2014-02-20 02:00:31 PST
Chrome ticket:
https://code.google.com/p/chromium/issues/detail?id=345227
Firefox ticket:
https://bugzilla.mozilla.org/show_bug.cgi?id=974832
Florian Bösch
Comment 2
2014-02-28 02:38:10 PST
This extension can be implemented by a UA if either any one of these conditions is met: - The OpenGL 3.3 core profile is supported:
https://www.opengl.org/registry/doc/glspec33.core.20100311.pdf
- ARB_timer_query is supported:
https://www.opengl.org/registry/specs/ARB/timer_query.txt
- Direct3D 9 is supported:
http://msdn.microsoft.com/en-us/library/windows/desktop/bb147308(v=vs.85).aspx
- The OpenGL ES EXT_disjoint_timer_query is supported:
http://www.khronos.org/registry/gles/extensions/EXT/EXT_disjoint_timer_query.txt
The disjoint behavior lacking from ARB_timer_query and OpenGL 3.3 core can be emulated by the UA.
Florian Bösch
Comment 3
2014-02-28 02:45:49 PST
The ANGLE project ticket possible used for tracking this feature:
https://code.google.com/p/angleproject/issues/detail?id=142
Florian Bösch
Comment 4
2014-06-09 03:11:58 PDT
Any possibility that the iOS8 driver could be updated to include a way to support timer queries? ES 3.0 doesn't contain timer queries, and the EXT_disjoint_timer_query extension is not listed for the iPad mini retina (PowerVR SGX543MP2) or iPod touch 5th gen (PowerVR SGX543MP2). EXT_disjoint_timer_query is listed natively for the Nexus 4/Nexus 7/Asus PadFone X (Qualcomm Adreno 320), Nexus 5/Samsung SM-G870 (Qualcomm Adreno 330). The Xiamoi Minipad (NVIDIA Tegra) supports ES 3.1 which has timer queries. Since the SGX543MP2 is a pretty powerful chip, it seems plausible to me the capability could be there in hardware.
Florian Bösch
Comment 5
2014-07-18 09:07:04 PDT
EXT_disjoint_timer query is desperately needed. Measuring performance by way of FPS is completely unusable, as it mostly just boils down to 3 answers, 15fps, 30fps or 60fps. Programmers can't measure their WebGL programs, and hence they cannot optimize them. This is extremely bad.
Marcin Ignac
Comment 6
2017-01-16 06:10:32 PST
Is there any chance of this being implemented? It has been shipped in Chrome and FF long time ago..
Radar WebKit Bug Importer
Comment 7
2017-01-17 10:13:57 PST
<
rdar://problem/30054979
>
EWS
Comment 8
2023-02-16 08:25:08 PST
Committed
260367@main
(dad993a38b59): <
https://commits.webkit.org/260367@main
> Reviewed commits have been landed. Closing PR #10140 and removing active labels.
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