Not sure if it’s a bug or I am a newbie.
I take a geometry to distribute particles over and run them around based on a FumFX sim.
I started with a 3D text (text > Extrude > to poly). I got particles appearing only on 25% subset of the object.
I created teapot - same thing happened.
Did I miss somthing?
Need steps to reproduce.
*I created a Teapot
*Picked as emission source and set to Volume
*Emitted 1,000,000 particles on frame 0
*Simulated
Got exactly what I would expect - 1MP inside the volume.
So the question is - in the screenshot, is this a PRT Loader created through the + button in Stoke, or did you make it manually?
Are the particles I see in the screenshot displayed by the PRT Loader, or by Stoke?
I bet it is the PRT Loader, because Stoke is set to Large Dots, and I don’t see Large Dots in the screenshot.
If it is the PRT Loader, is it set to 100% in the viewport? PRT Loader defaults to 1% display, First N, and the counter shows 99999 particles which is one less than 1% of one million…
When you use the + button in Stoke, it makes a PRT Loader set to 100% automatically.
OK, my fault.
What I got displayed was particles from an autocreated PRTLoader and it defaults to First N particles, which does not make much sense for this wokflow.
I changed to Every N and it looks good.
However, I can’t get Stoke displaying any particles in my viewport. I see ony an icon.
This is unexpected.
Do Large Dots work in your PRT Loader? Could be a graphics card problem.
What happens if you switch Stoke Display to Velocity? Do you get lines?
I don’t get anything on the screen regardless of the display settings.
I don’t recall any issues displaying PRT loader particles in various modes in a past, so I don’t think it’s a problem.
Do you see a Stoke icon in the viewports?
Also, can you report the Max viewport driver (Nitrous or Direct3D), and graphics card version?
Could you try it on a different machine? Your license is a floating one…
Sorry, no Max on any other machine. Just unregistered network rendering copies.
Would need to install a trial somewhere.
But:
I think this direction of search will not be helpful. Stoke & Krakatoa PRT object use the exact same code to draw particles so I can’t imagine how the GFX card would work with one and not the other.
I suspect there might be some problem related to viewport display percentage or viewport display limit (or trying to draw with a color channel that doesn’t work). Can you post a screenshot of the settings like this one: thinkboxsoftware.com/storage … 0737028865
For some reason it started working after few restarts.
I am not sure what I did, but this may be related somehow to fixing the installation of ThinkboxSchematic / Helium for Ember which I was doing in parallel.
Now I get this amazing performance w/out writing to PRTLoaders. Awesome.
Hi, new to Beta… was this issue ever sorted as my viewport is going crazy after pressing simulate. Can see some kind of activity only in Top view but nothing usable. All other viewports empty and Perspective view results in all items dissapearing off screen until about frame 76 they will flick back on for a few frames but still no particles.
We were never shown any examples of a viewport problem, or even a real description of what is happening. Please post screenshots of the viewport and the Stoke settings.
I could be doing it wrong (slap me if I am) as just installed Stoke a couple of hours ago but I produce fume cache with velocities as normal. Distribution set to sphere, velocity to fmeFX and simulate. Particles briefly showing in top viewport and FFX grid and stoke Icons dissapear from perspective. Here is a screenshot. Tried reboots etc… always worked fine with Krakatoa/frost.
Thanks 
If you reset the saved data (via the X just above the green cache validity display) does the icon come back? Max viewports exhibit this behavior when trying to draw infinite particles, so its possible a divide by zero or otherwise infinity velocity has placed some particles at infinity. Do you get similar results if you replace the FumeFX velocity source with a Wind spacewarp? Can you package a sample PRT file (by enabling >Save Disk Cache before pressing simulate and exploring to the output folder afterwards) and post it here?
I will have to check when I get home, just left the office 
Shall keep you posted! Thanks
Also keep in mind there was a bug in Beta 3 where the FumeFX grid had to be aligned to the world for it to operate properly. If the position of the FumeFX object is not [0,0,0], it will not work right.
This will be fixed in the upcoming Beta 4.
