[Development] Problem with QOpenGLContext?

[Kurt Pattyn]

Hi Morten,

I reviewed the patch (no, it won’t work).
Accidentally I already submitted a (working) patch: https://codereview.qt-project.org/#change,80610

Cheers,

Kurt

On 11 Mar 2014, at 15:00, Sorvig Morten <Morten.Sorvig at digia.com> wrote:

> Will this patch work?
> 
> https://codereview.qt-project.org/#change,80620
> 
> Morten
> 
> 
> On 11 Mar 2014, at 12:12, Kurt Pattyn <pattyn.kurt at gmail.com> wrote:
> 
>> Some more information.
>> 
>> I work on OSX.
>> When digging into the platform specific implementation, I detected that in the method qcgl_createNSOpenGLPixelFormat()
>> the color depth nor the alpha depth is not set. If it is not set, it defaults to the screen color depth, which is 8-bit in my case.
>> I will file a bug report for that.
>> 
>> Cheers,
>> 
>> Kurt
>> 
>> On 11 Mar 2014, at 11:28, Kurt Pattyn <pattyn.kurt at gmail.com> wrote:
>> 
>>> Hi,
>>> 
>>> as I understand correctly the ‘old’ QGLxxx classes will be replaced by new QOpenGLxxx classes.
>>> I tried the following code below, and found out that QGLContext is correctly setting the color depth,
>>> while QOpenGLContext always defaults to 8.
>>> 
>>>    QSurfaceFormat ogfrmt;
>>>    ogfrmt.setRedBufferSize(6);
>>>    ogfrmt.setGreenBufferSize(6);
>>>    ogfrmt.setBlueBufferSize(6);
>>>    QOpenGLContext *oglc = new QOpenGLContext;
>>>    oglc->setFormat(ogfrmt);
>>>    oglc->create();
>>>    qDebug() << "QOpenGLContext red buffer size:" << oglc->format().redBufferSize();
>>> 
>>>    QGLFormat gfrmt;
>>>    gfrmt.setRedBufferSize(6);
>>>    gfrmt.setBlueBufferSize(6);
>>>    gfrmt.setGreenBufferSize(6);
>>>    QGLContext *glc = new QGLContext(gfrmt);
>>>    glc->create();
>>>    qDebug() << "QGLContext red buffer size:" << glc->format().redBufferSize();
>>> 
>>> 
>>> Is this a known bug, or is the above code simply wrong?
>>> 
>>> Cheers,
>>> 
>>> Kurt
>> 
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