I reported that more than a year ago, exactly the same problem you have. I hope a solution come someday...
2011/10/6 <nuke-dev-requ...@support.thefoundry.co.uk> > Send Nuke-dev mailing list submissions to > nuke-dev@support.thefoundry.co.uk > > To subscribe or unsubscribe via the World Wide Web, visit > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-dev > or, via email, send a message with subject or body 'help' to > nuke-dev-requ...@support.thefoundry.co.uk > > You can reach the person managing the list at > nuke-dev-ow...@support.thefoundry.co.uk > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of Nuke-dev digest..." > > > Today's Topics: > > 1. ValueProvider example (Stephen Newbold) > 2. [Nuclear blast from the past] - engine() ChannelMask > weirdness (Paolo Berto) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Wed, 05 Oct 2011 12:43:52 +0100 > From: Stephen Newbold <stephe...@moving-picture.com> > Subject: [Nuke-dev] ValueProvider example > To: Nuke plug-in development discussion > <nuke-dev@support.thefoundry.co.uk> > Message-ID: <4e8c42f8.8050...@moving-picture.com> > Content-Type: text/plain; charset=windows-1252; format=flowed > > Hi, > > The NDK docs say there is an example of the use of valueProviders but I > can't see this anywhere. Anyone know if this is hidden away somewhere or > have an example I can look at? > > The NDK contains a ‘ValueProviderOp’ sample which demonstrates a simple > case using a ValueProvider to link a /Color_knob/ > < > http://docs.thefoundry.co.uk/nuke/63/ndkdevguide/knobs-and-handles/knobtypes.html#knobs-knobtypes-color-knob > > > and a /MultiFloat_knob/ > < > http://docs.thefoundry.co.uk/nuke/63/ndkdevguide/knobs-and-handles/knobtypes.html#knobs-knobtypes-multifloat-knob > >. > If you’re looking to link non-axis knob types, you may want to check out > the /The knob_changed() Method/ > < > http://docs.thefoundry.co.uk/nuke/63/ndkdevguide/knobs-and-handles/knobchanged.html#knobs-knob-changed > > > section. > > Cheers, > Steve > > -- > Stephen Newbold > Compositing Lead - Film > MPC > 127 Wardour Street > Soho, London, W1F 0NL > Main - + 44 (0) 20 7434 3100 > www.moving-picture.com > > > > ------------------------------ > > Message: 2 > Date: Thu, 6 Oct 2011 18:41:47 +0800 > From: Paolo Berto <pbe...@jupiter-jazz.com> > Subject: [Nuke-dev] [Nuclear blast from the past] - engine() > ChannelMask weirdness > To: Nuke plug-in development discussion > <nuke-dev@support.thefoundry.co.uk> > Cc: The Foundry Support <supp...@thefoundry.co.uk> > Message-ID: > <CALD5EGwW-BYJE9LqJO5Yj+BwOfz0=694b81v6qhs6_rpraa...@mail.gmail.com > > > Content-Type: text/plain; charset=UTF-8 > > Adding in cc Foundry's support & the oracle (Jonathan). > > This oldie but goldie needs some love: it is just too common to have > many channels in a node nowadays, and suddenly requesting multiple of > them rather than the only one needed is a total waste. > > Could some Nuklear Scientist @ Foundry assign a bug ID and look into this? > > Best, > Paolo > > On Wed, Jul 28, 2010 at 6:16 AM, Moritz Moeller > <realr...@virtualritz.com> wrote: > > My plugin has a lot of channels users can request. Now I use a Shuffle > > after to request individual ones while testing. > > > > Let say I request 'point'. > > All fine, engine gets called with a mask set to 'point'. > > > > Next I switch the Shuffle to 'normal'. > > Now I'd expect engine() to be called with a channel mask for 'normal' > > but instead the mask is 'point,normal'. > > > > Likewise, if I now request 'motion' next, engine() will be asked for > > 'point,normal,motion'. > > However, if I now modify any setting on my plugin itself to force a > > re-render, my engine() will correctly only be called with 'motion', as > > one would expect. > > > > Wtf is going on here? > > > > I really like to find out how I can only render the channels that end up > > being used. > > Some of the channels my Iop outputs are literally 50times as expensive > > as others. So in the not uncommon case that a user has started rendering > > an expensive channel, switched the Shuffle to one of the cheap ones, > > Nuke will still request the expensive channel (and the cheap one) from > > my node, even though the former's data is never being used downstream! > > > > > > I also noticed that if I call writable_channels() (undocumented)) on the > > Row passed to engine() it will sometimes contain only contain those > > channels that one would expect to be requested (i.e. 'motion' in above > > example) -- but only sometimes. > > But most of the time it is empty. So I intersect the mask passed to > > engine() with row.writable_channels() if the latter is /not/ empty. And > > that sometimes gives me what I expect -- sometimes. > > > > I'm looking forward to understand what is going on here. :) > > > > > > .mm > > _______________________________________________ > > Nuke-dev mailing list > > Nuke-dev@support.thefoundry.co.uk > > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-dev > > > > > > -- > paolo berto > jedi rock & dub band lead > /*jupiter jazz*/ visual research — hong kong > www.jupiter-jazz.com > > > ------------------------------ > > _______________________________________________ > Nuke-dev mailing list > Nuke-dev@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-dev > > > End of Nuke-dev Digest, Vol 55, Issue 3 > *************************************** > -- Abraham Martin R+D Department Next Limit Technologies
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