QOpenGLFramebufferObject toImage after bindDefault is empty

[glararan]

Hello,

I'm in trouble. I have following code and in QMessageBox just white box :/ If I print it in fbo->bind its working.

@QOpenGLFramebufferObjectFormat format;
format.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
format.setInternalTextureFormat(GL_RGBA);

fbo = new QOpenGLFramebufferObject(size, format);

fbo->bind();
mapChunks[0][0]->draw();
fbo->bindDefault();

QMessageBox msg;
msg.setIconPixmap(QPixmap::fromImage(fbo->toImage());
msg.exec();

fbo->release();@

Thanks for help.