[Qtwebengine] armv7, eglfs, qtwebenginewidgets, fancybrowser result in blank screen, and how to enable logging.

[Agocs Laszlo]

Hi,

The warnings

QSGContext::initialize: depth buffer support missing, expect rendering errors
QSGContext::initialize: stencil buffer support missing, expect rendering errors

are only fixable by patching Qt itself with requesting depth and stencil in QOpenGLWidget since in 5.3 there is no way to set a format on the QOpenGLWidget that is used internally by webenginewidgets. (it will come in 5.4 when QOpenGLWidget becomes public and usable)

Then again this is a minor issue and not the cause of the main problem. For the record I got something similar on iMX6 with eglfs: the Quick-based stuff is fine, but using widgets results in rendering black tiles only.

Cheers,
Laszlo


________________________________
From: qtwebengine-bounces+laszlo.agocs=digia.com at qt-project.org [qtwebengine-bounces+laszlo.agocs=digia.com at qt-project.org] on behalf of Rob Vogelaar [revmh68 at gmail.com]
Sent: Tuesday, May 06, 2014 9:08 AM
To: Turcotte Jocelyn
Cc: qtwebengine at qt-project.org
Subject: Re: [Qtwebengine] armv7, eglfs, qtwebenginewidgets, fancybrowser result in blank screen, and how to enable logging.

Hello Jocelyn,

I merged the patches for qwidget and qopenglwidget from stable, and added webkit/core text-rendering traces and sharecontext traces. This runs like the below, and further below with the --enable-gpu-service-logging. and further below is an attempt with quicknanobrowser.

can you explain / prevent this error? : [0506/005307:ERROR:gles2_cmd_decoder.cc(3563)] [GroupMarkerNotSet(crbug.com/242999)!:D443D131]cmd<http://crbug.com/242999)!:D443D131]cmd>: kGetMultipleIntegervCHROMIUM ?

thanks,
Rob

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