Hope I haven’t missed a similar post on this previously - I am experiencing very strange Grasshopper preview display in the latest WIP (6.0.16327.14151, 11/22/2016). I am just using the default GH display - but I get a funny “ghosting” where the geometry repeats itself at different scales when zooming. Curve display is not effected - only surface/mesh display. Attached gif shows proper display at first and then funny “ghosting.”
Yes, the glitch has gone away. However, rendered viewport performance when zooming is now extremely slow (not sure if this is new, certainly didn’t notice before). Seems to be related to skylight-based shadows - non-skylight shadows perform as expected. I can raise this as a separate issue if need be since the primary one this post referenced now appears to be corrected.
Which GPU are you using, the GT650M or K2100M? How is the performance when you rotate, as opposed to when you zoom? (I’m assuming you are using the mouse wheel when zooming as opposed to “ctrl+right mouse button”.
agh. I spoke too soon @DavidEranen - the ghosting is back. It’s less pronounced but definitely present. I’m also getting a NEW and strange behavior of colored gridding showing up everywhere intermittently.
Maximum Texture size: 16384 x 16384
Z-Buffer depth: 24bits
Maximum Viewport size: 16384 x 16384
Total Video Memory: 2 GB
However even prior to updating, I restarted Rhino and it behaved as expected. Tried reproducing the same steps - in the Rhino display environment and in GH - and nothing, everything looked normal. Will let you know if I can reproduce consistently. The things I was mucking about with in Rhino when it occurred were the rendered viewport, skylight, ground plane, shadows, etc… if that gives any clues. Will keep an eye on this and keep you appraised.
also re: the slowness zooming in the rendered viewport, it seems to only occur when the skylight is on and only when using the mouse wheel - other modes of zooming and rotating are smooth. Gif below makes the “smooth” look choppier than it is, but you get the idea - first is mouse wheel scroll, then ctrl-right click drag:
I believe this is a laptop card, so reproducing it on a desktop equivalent is most likely not going to happen. I can look for the K2100 I have (but I think I sent it to Scott or someone in Seattle). Why do we think it’s related to the card?