I found a solution and posted it on StackOverflow

@m.sue Great find for the properties, and if I cannot find a way to tweak the rendering settings for draw distance then I guess that would be my best way to do it. Thanks.

It should be relative to the .dae.. I am saying this because, I tried opening it using FBX Review which renders 3d. FBX Review loaded the 3d model without the textures. Moreover, the application does not know anything about textures. It just renders whatever is in the .dae and all the information about the textures is inside the .dae... My concern is that if some .dae file is created on Windows which refers textures as in my example, how will I be able to open the same on Mac (with textures), and vice-versa. I tried changing the path to full path too in the .dae. No change.

After some experimenting, the culprit was the MagnificationFilter. Although there were no problem setting the Magnification with QOpenGLTexture::NearestMipMapNearest with float images, with integer images, I had to set to QOpenGLTexture::Nearest.

@HarryLong said: I would set this as solved but cannot figure out how... Edit your first message's title to start with [SOLVED].