Trouble with matthew ragens advanced instancing top to chop

Beginners
1

i followed the tutorial in matthew ragens advanced instancing part 2 but without using separate bases and everything seems right but it crashes when i reenable the shuffle (sequence channels by name) which i have bypassed after the topto crop full image into the merge after the soptochop

does anyone know why? I’m supposed to see the circle top with the a for alpha i have on color mode instancing 2 in the geo

thanks.

2

i was going to put the TD file but says new users cant post links
if anyone wants me to send it to them to see it if i can
my setup is a geo with a circle sop inside size 0.1 using a grid sop to null to soptochop and a merge (for next step) to null for translate op tx ty tz, then a circle top to fit to the resolutionw/h of the grids rows and cols to null, to toptochop w crop full image to a shuffle chop sequence channels by name then into that merge chop after the grid and its soptochop

3

Hi @n9261,

you should be able to post the file now.

Could you also mention the TouchDesigner build you are working in as well as your OS and hardware setup? And does crash mean you also get a file called TouchDesignerCrash…dmp which you could share with us?

cheers
Markus

5

thank you i appreciate it the file is
TDFIXvidtoptogeoMRadvancedinstance.toe (5.9 KB)
im using mac os 14.1 right now and free TouchDesigner not commercial, this dosent give me a backup folder which is the only type of other file i usually get if thats what your talking about

6

Hi @n9261,

I can see from the file that you are using TouchDesigner build 2022.35280. Can you update to the latest: Download | Derivative ?

Otherwise the crash might happen because of the heavy operation that the TOP To CHOP and Shuffle CHOP currently have to go through.
This is mainly caused by the Fit TOP which resizes the texture to 1000 x 1000 pixels yet it looks like the whole network is actually expecting a resolution of 40x30.
So first step would be to remove the Fit TOP or double check what it’s purpose is in the original tutorial.

There are a few things you can do now differently anyways: Instancing also accepts TOPs or SOPs directly - no need to convert them to CHOPs first.
Even if you want to go the CHOP route, the TOP To CHOP now has a parameter “Output as Single Channel Set” which renders the Shuffle CHOP unnecessary for this.

Hope this helps a bit
Cheers
Markus

7

thanks for the help im checking it out i appreciate that

8

i figured it out i was just referencing the grid cols/rows on the circle top instead of the fit top resolution