[Bf-committers] Trusted blend files and scripted drivers bug and annoyance

Adriano Oliveira adriano.ufrb at gmail.com
Sat Aug 10 14:14:07 CEST 2013


I have already asked for an alternative to the "#frame" driver for
rendering animation in Cycles.
It is realy not a good aproach anymore due to new security policies.

Seed should always vary per frame. Static seed is an exception, it is only
usefull in very rare situations when you need to compare renders.

"#frame" is not obvious for most users, and with new policies it leeds to
mistakes, like Daniel points out.



Adriano A. Oliveira



2013/8/9 Daniel Salazar - 3Developer.com <zanqdo at gmail.com>

> I'm also having problems with students in the simple case of a #frame
> driver in cycles seed. I can never be sure they all have the enable python
> setting on in all the computers they use even if I tell them to enable it,
> this stuff is just never guaranteed in the real world because people forget
> this stuff. Of course renders turn out useless because of fixed noise.
>
> Daniel Salazar
> patazstudio.com
>
>
> On Fri, Aug 9, 2013 at 2:30 PM, Jace Priester <
> jacepriester at threespaceimaging.com> wrote:
>
> > I expressed a lot of disagreement with the "Trusted" feature when there
> was
> > talk about implementing it, and I'm here to voice a complaint again now
> > that it has become a problem.
> >
> > I have created an animation using a scripted expression driver and that
> > driver's value evaluates to zero. I did not notice the "Continue
> Untrusted"
> > button appear at the top right. I've spent hours trying to figure out why
> > scripted drivers don't work, only to save and reload and then be prompted
> > to "Reload Trusted". This has been a gigantic waste of my time and is
> > precisely the reason I did not want this "trusted" junk in the first
> place.
> >
> > I am aware of the command line options to disable it, but I never
> expected
> > to have to do that. I understand the "Reload Trusted" prompt when
> opening a
> > file. However, when I create a brand new driver and enter the expression
> > myself it should work immediately. In any case, it damn sure should not
> > show a value of zero without a notice right next to it that it skipped
> > evaluation entirely. As-is, this is very misleading and indicates that
> the
> > expression did in fact resolve to a value of zero.
> > --
> >
> >
> >
> --------------------------------------------------------------------------
> > Jace Priester
> > Threespace Imaging
> > jacepriester at threespaceimaging.com
> > 559-284-0904
> >
> --------------------------------------------------------------------------
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