Re: [PyOpenGL-Users] Need help about Picking

[Ian M. <geo...@gm...>]

On Mon, May 24, 2010 at 7:48 AM, Marco Avellino <
mar...@ex...> wrote:

>  Hi, I followed a lot of tutorials about picking and I decided to use the
> Selection Buffer.
>
I've never used it, but it looks interesting.

> hits = glRenderMode(GL_RENDER)
>
> for record in hits:
>
> *min_depth*, max_depth, names = record
>
In context would be more helpful.  For example, did you use
glRenderMode(GL_SELECT) and do drawing stuff before this?  Could we see your
actual source file?

> and I tried to obtain the lower value of “min_depth“ (= “the nearest
> object”) but the result is no correct: the reason is that all my returned
> values of *min_depth* are identical.
>
...telling me that nothing is being written to this buffer.  Which could
mean many things--it's not configured correctly, you're not drawing
anything, you don't have a graphics card, etc.

Could we see the actual code?

Thanks,
Ian