[Qt-interest] WEIRED PROBLEM: incomplete opengl framebuffer

[Yifei Li]

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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> 
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