linux glview white screen issue possible fix

[linuxjacques]

I and a few other ppl in #openkinect were reporting a white screen
instead of the depth camera image in glview.

We think we have narrowed it down to hardware / drivers which do not
support non-power-of-two textures.

The open source radeon drivers, at least on older ATI chips, seems to
have the problem.

amiller on irc has what appears to be a fix. He converted glview.c to
use GL_EXT_texture_rectangle .

git clone https://github.com/amiller/libfreenect.git
git checkout textrectext

This fixed the issue for me.

I would appreciate others having this problem trying this fix.

Thanks,

jacques

[Andrew Miller]

At least one person (wheagy) using OS X tried this fix earlier, and it
did NOT address his problem.

That particular problem may have been solved by the threading patch
here, but I'm not sure https://github.com/OpenKinect/libfreenect/pull/63

On Nov 22, 9:53 pm, linuxjacques <linuxjacq...@gmail.com> wrote:
> I and a few other ppl in #openkinect were reporting a white screen
> instead of the depth camera image in glview.
>
> We think we have narrowed it down to hardware / drivers which do not
> support non-power-of-two textures.
>
> The open source radeon drivers, at least on older ATI chips, seems to
> have the problem.
>
> amiller on irc has what appears to be a fix. He converted glview.c to
> use GL_EXT_texture_rectangle .
>

> git clonehttps://github.com/amiller/libfreenect.git

[Kevin Curry]

Jacques,

I had this issue. Thanks to your help via IRC, I was able resolve it.

For readers: Driver was MESA DRI R300... Jacques provided some
additional necessary info for this to work:

@amiller's fix uses GL_TEXTURE_RECTANGLE_EXT, which was undefined.
Jacques found it in libglew. I installed libglew and added #include
<GL/glew.h> in glview.c

@+qDot noted the glew hack would not likely be merged.

On Nov 22, 9:53 pm, linuxjacques <linuxjacq...@gmail.com> wrote:

> I and a few other ppl in #openkinect were reporting a white screen
> instead of the depth camera image in glview.
>
> We think we have narrowed it down to hardware / drivers which do not
> support non-power-of-two textures.
>
> The open source radeon drivers, at least on older ATI chips, seems to
> have the problem.
>
> amiller on irc has what appears to be a fix. He converted glview.c to
> use GL_EXT_texture_rectangle .
>

> git clonehttps://github.com/amiller/libfreenect.git

[Tim Detwiler]

I'm having this issue now with Ubuntu 10.04 and an ATI (x1800xt) card,
which seems in line with the old ATI card theory. It seems the
freenect interface has changed a little since amillers fix was posted,
so I haven't managed to get it running yet either. I'm able to control
the LEDs and the Motor so far, but the screen for glview is just blank
(white).

Should I be looking for alternative drivers to fix this?

-Tim