Bug 61143 – [chromium] Remove LayerRendererChromium::useShader

• Component: Layout and Rendering
• Status: RESOLVED FIXED

[Alok Priyadarshi]

LayerRendererChromium::useShader() caches shader id. To enable accelerated drawing, we need to let SKIA use the underlying graphics context without going via LayerRendererChromium. SKIA would be setting a different shader without LayerRendererChromium knowing about it.

There are two ways to fix it:
1. Do the caching at a common lower level - may be command buffer.
2. Get rid of caching altogether if it does not affect compositor performance adversely.

From my initial tests on a variety of composited pages, caching does not affect FPS on both desktop and ANGLE. I would expect all drivers to do this optimization.

[Alok Priyadarshi]

Created attachment 94114 [details]
proposed patch

[Alok Priyadarshi]

Created attachment 94116 [details]
proposed patch

fixed changelog

[Vangelis Kokkevis]

Comment on attachment 94116 [details]
proposed patch

This looks good and it cleans up the API.  I would seriously doubt it would make any difference in performance.

[James Robinson]

Comment on attachment 94116 [details]
proposed patch

R=me

[WebKit Commit Bot]

Comment on attachment 94116 [details]
proposed patch

Rejecting attachment 94116 [details] from commit-queue.

Failed to run "['./Tools/Scripts/webkit-patch', '--status-host=queues.webkit.org', '--bot-id=cr-jail-7', 'apply-..." exit_code: 2

Last 500 characters of output:
tform/graphics/chromium/cc/CCCanvasLayerImpl.cpp.rej
patching file Source/WebCore/platform/graphics/chromium/cc/CCHeadsUpDisplay.cpp
patching file Source/WebCore/platform/graphics/chromium/cc/CCLayerImpl.cpp
patching file Source/WebCore/platform/graphics/chromium/cc/CCPluginLayerImpl.cpp
patching file Source/WebCore/platform/graphics/chromium/cc/CCVideoLayerImpl.cpp

Failed to run "[u'/mnt/git/webkit-commit-queue/Tools/Scripts/svn-apply', u'--reviewer', u'James Robinson', u'--f..." exit_code: 1

Full output: http://queues.webkit.org/results/8722024

[Alok Priyadarshi]

Created attachment 94236 [details]
Patch for landing

[WebKit Review Bot]

Comment on attachment 94236 [details]
Patch for landing

Rejecting attachment 94236 [details] from commit-queue.

[e-mail] does not have committer permissions according to http://trac.webkit.org/browser/trunk/Tools/Scripts/webkitpy/common/config/committers.py.

- If you do not have committer rights please read http://webkit.org/coding/contributing.html for instructions on how to use bugzilla flags.

- If you have committer rights please correct the error in Tools/Scripts/webkitpy/common/config/committers.py by adding yourself to the file (no review needed).  The commit-queue restarts itself every 2 hours.  After restart the commit-queue will correctly respect your committer rights.

[WebKit Review Bot]

Comment on attachment 94236 [details]
Patch for landing

Rejecting attachment 94236 [details] from commit-queue.

[e-mail] does not have committer permissions according to http://trac.webkit.org/browser/trunk/Tools/Scripts/webkitpy/common/config/committers.py.

- If you do not have committer rights please read http://webkit.org/coding/contributing.html for instructions on how to use bugzilla flags.

- If you have committer rights please correct the error in Tools/Scripts/webkitpy/common/config/committers.py by adding yourself to the file (no review needed).  The commit-queue restarts itself every 2 hours.  After restart the commit-queue will correctly respect your committer rights.

[WebKit Commit Bot]

Comment on attachment 94236 [details]
Patch for landing

Rejecting attachment 94236 [details] from commit-queue.

Failed to run "['./Tools/Scripts/webkit-patch', '--status-host=queues.webkit.org', '--bot-id=cr-jail-7', 'apply-..." exit_code: 1

Last 500 characters of output:
autoinstalled/mechanize/_urllib2_fork.py", line 332, in _call_chain
    result = func(*args)
  File "/mnt/git/webkit-commit-queue/Tools/Scripts/webkitpy/thirdparty/autoinstalled/mechanize/_urllib2_fork.py", line 1170, in https_open
    return self.do_open(conn_factory, req)
  File "/mnt/git/webkit-commit-queue/Tools/Scripts/webkitpy/thirdparty/autoinstalled/mechanize/_urllib2_fork.py", line 1118, in do_open
    raise URLError(err)
urllib2.URLError: <urlopen error [Errno 60] Operation timed out>

Full output: http://queues.webkit.org/results/8719446

[Alok Priyadarshi]

Manually committed r86975: http://trac.webkit.org/changeset/86975

[Eric Seidel (no email)]

Have you added yourself to committees.py?  Adam: do we believe the feeder queue is still restarting properly?

[Alok Priyadarshi]

(In reply to comment #11)
> Have you added yourself to committees.py?  Adam: do we believe the feeder queue is still restarting properly?

Yes I have added myself to committers.py.