Thanks for looking at this Sven, It's a peculiar combination of factors that eventually lead to the strange render glitch in MentalRay. At least I know what causes it so I have a number of workarounds now, or at least I know what to do to avoid it happening. I'm rather glad it wasn't just me!
Cheers Chris On 24 June 2016 at 18:19, Sven Constable <[email protected]> wrote: > When I recreated a scene, I used emit per second, not total number of > particles. It doesn't happen then. Indeed there seems to be a problem with > the slide on surface node, when using a total number of particles AND the > emitter is inside the grid. No idea what it is, but at least I can confirm > it. > > As a workaround maybe just using emit per second and animate the value to > zero after emission? > > > > sven > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Chris Marshall > *Sent:* Friday, June 24, 2016 5:43 PM > > *To:* [email protected] > *Subject:* Re: ICE and Mental Ray - seen anything like this? > > > > It's probably just my system. I haven't got time to reinstall Soft so I'll > set a test render going over the weekend and see how it goes. > > > > On 24 June 2016 at 16:25, Chris Marshall <[email protected]> > wrote: > > Interesting. > > OK Here you go > https://dl.dropboxusercontent.com/u/76099539/testnew1.zip > > > > On 24 June 2016 at 16:14, Sven Constable <[email protected]> wrote: > > Tried it and it renders ok. Can you share the test scene? > > sven > > > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Chris Marshall > *Sent:* Friday, June 24, 2016 4:54 PM > *To:* [email protected] > *Subject:* Re: ICE and Mental Ray - seen anything like this? > > > > It's something to do with the Slide on Surface compound. > I've managed to recreate the bug in a new scene. Something like this, if > you're having a slow Friday afternoon, like most of us here in the UK!:- > > Create and empty point cloud and emit some particles from geometry ie cube > (dont move the cube). Create a grid (don't move that either) and use that > as the surface for a Slide on Surface compound for the particle emission. > Put a Simulate Particles node at the end of course. Step on to frame 2. > > The render glitch happens when the emission object cuts through the grid, > which in this scenario it does, and you make the Offset Distance in the > Slide on Surface compound, anything but 0. Draw a render region. > > That's it. > > Chris > > > > On 24 June 2016 at 14:51, Rob Chapman <[email protected]> wrote: > > Wow, plotting particle cache and rendering that? > > On 24 Jun 2016 16:08, "Chris Marshall" <[email protected]> wrote: > > which makes no sense whatsoever! > > > > On 24 June 2016 at 14:08, Chris Marshall <[email protected]> > wrote: > > I've narrowed it down to the Slide on Surface node. > > Investigating further now. > > > > On 24 June 2016 at 14:03, Chris Marshall <[email protected]> > wrote: > > I'm not using textures. This is just random coloured particles. Rendered > on one machine. > > > > On 24 June 2016 at 13:10, Sven Constable <[email protected]> wrote: > > Are you using compressed tiffs as textures to drive the random colours? I > think mr still doesn’t support them. Another thing might be switching from > "Use from disk…"to "Load in Memory…" in the clip property of the textures. > (unlikely though but I've seen buckets rendered differently across machines > when it was not set to "Load in memory") > > > > sven > > > > *From:* [email protected] [mailto: > [email protected]] *On Behalf Of *Chris Marshall > *Sent:* Friday, June 24, 2016 1:25 PM > *To:* [email protected] > *Subject:* ICE and Mental Ray - seen anything like this? > > > > Hi All, > > I have a very weird render glitch. OK I know I'm still using Mental Ray > but I'd need to fork out a few thousand to get Arnold running here. > > So I suddenly have an issue rendering a point cloud, image attached. > Anyone seen anything like this before? I might need to rebuild it from > scratch to see where the problem is. > > Thanks > > Chris > > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. > > > > > -- > > Chris Marshall > > Mint Motion Limited > > 029 20 37 27 57 > > 07730 533 115 > > www.mintmotion.co.uk > > www.dot3d.com > > > > > > > -- > > Chris Marshall > > Mint Motion Limited > > 029 20 37 27 57 > > 07730 533 115 > > www.mintmotion.co.uk > > www.dot3d.com > > > > > > > -- > > Chris Marshall > > Mint Motion Limited > > 029 20 37 27 57 > > 07730 533 115 > > www.mintmotion.co.uk > > www.dot3d.com > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. > > > > > -- > > Chris Marshall > > Mint Motion Limited > > 029 20 37 27 57 > > 07730 533 115 > > www.mintmotion.co.uk > > www.dot3d.com > > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. > > > > > -- > > Chris Marshall > > Mint Motion Limited > > 029 20 37 27 57 > > 07730 533 115 > > www.mintmotion.co.uk > > www.dot3d.com > > > > > > > -- > > Chris Marshall > > Mint Motion Limited > > 029 20 37 27 57 > > 07730 533 115 > > www.mintmotion.co.uk > > www.dot3d.com > > > > ------ > Softimage Mailing List. > To unsubscribe, send a mail to [email protected] > with "unsubscribe" in the subject, and reply to confirm. > -- Chris Marshall Mint Motion Limited 029 20 37 27 57 07730 533 115 www.mintmotion.co.uk www.dot3d.com
------ Softimage Mailing List. To unsubscribe, send a mail to [email protected] with "unsubscribe" in the subject, and reply to confirm.
