[Qt-interest] WEIRED PROBLEM: incomplete opengl framebuffer

[Yifei Li]

The problem still persists even though I switch to Qt-4.8.0.

Can someone look into this problem on Lion? Thanks

On Aug 23, 2011, at 10:38 AM, Yifei Li wrote:

>  Qt-4.6.2 may have some incompatibilities with Lion.
> 
> The same program even runs fine under a Windows 7 virtual machine on Lion
> 
> On Aug 22, 2011, at 1:48 PM, Yifei Li wrote:
> 
>> FYI, I found glCheckFrameStatus actually returns GL_FRAMEBUFFER_UNDEFINED.
>> 
>> On Aug 22, 2011, at 11:18 AM, Yifei Li wrote:
>> 
>>> oops, I missed one line in the code
>>> On Aug 22, 2011, at 11:15 AM, Yifei Li wrote:
>>> 
>>>> Hi,
>>>> 
>>>> First of all, I recently upgraded to Mac OS X Lion on my 15'' Macbook Pro and I'm using Qt-4.6.2 (built from source). I've never had this problem before with Snow Leopard.
>>>> 
>>>> glCheckFramebufferStatus returns some unknown error after I create a QGLWidget. Please try the following code in your QMainWindow's constructor to see if you have the same problem:
>>>> 
>>>> QGLWidget* glWidget = new QGLWidget;
>>> glWidget->makeCurrent();
>>>> GLuint status = glCheckFrameBufferStatus(GL_FRAMEBUFFER);
>>>> if( status != GL_FRAMEBUFFER_COMPLETE) {
>>>>          switch(status){
>>>>        case GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT:
>>>>            qDebug("incomplete attachment");
>>>>            break;
>>>>        case GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT:
>>>>            qDebug("incomplete missing attachment");
>>>>            break;
>>>>        case GL_FRAMEBUFFER_UNSUPPORTED:
>>>>            qDebug("unsupported");
>>>>            break;
>>>>        default:
>>>>            qDebug("something else");
>>>> 
>>>> }
>>>> 
>>>> Thanks
>>>> 
>>>> Yifei
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