OTOY Forums

stefano-dear wrote:Hi,

with old files the live viewer works correctly, but if I launch in render it always crashes

Try to delete and create new settings at RenderSettings, and after creating, choose it and send render to PV.
May be it wouldn't work, but it helps me fix crashes with old scenes and last plugin versions.

I don't know is it a bug or something just hasn't prepared yet.
In case of work with particles simulations, if there is a Simulation scene object in the scene, PV render gives black frame with no calculations (0 sec) in some conditions.
Unfortunately, I couldn’t find 100% clear conditions. I'm working without difficult particles setups and have no headache with SimScene impact at the moment.
Just came across it by accident while test scene frome AssetBrowser and I assume that logically, the presence of such an object in the scene hierarchy should not lead to a black frame.

Here some results I get at PV:
no particle cache + active "Simulation scene" = black frame with no calculations.
no particle cache + deactivated "Simulation scene" = renders just geo (no sim results and it's Ok while SimScene rules the simulation).
particle cached + active "Simulation scene" = black frame with no calculations.
particle cached + deactivated "Simulation scene" = all good

LiveViewer shows all simulated stuff.

stefano-dear wrote:Hi,

with old files the live viewer works correctly, but if I launch in render it always crashes

It doesn't show any crashes. Send me your scene then I can try to reproduce your issue

desire wrote:I don't know is it a bug or something just hasn't prepared yet.
In case of work with particles simulations, if there is a Simulation scene object in the scene, PV render gives black frame with no calculations (0 sec) in some conditions.
Unfortunately, I couldn’t find 100% clear conditions. I'm working without difficult particles setups and have no headache with SimScene impact at the moment.
Just came across it by accident while test scene frome AssetBrowser and I assume that logically, the presence of such an object in the scene hierarchy should not lead to a black frame.

Here some results I get at PV:
no particle cache + active "Simulation scene" = black frame with no calculations.
no particle cache + deactivated "Simulation scene" = renders just geo (no sim results and it's Ok while SimScene rules the simulation).
particle cached + active "Simulation scene" = black frame with no calculations.
particle cached + deactivated "Simulation scene" = all good

LiveViewer shows all simulated stuff.

Remove motion blur on Trail object, it's actually not supported and cause problems. Also copy/paste all objects to a new scene, this is a workaround. I don't know yet what's causing the problems, probably something is the reason from your render settings.

aoktar wrote: Remove motion blur on Trail object, it's actually not supported and cause problems. Also copy/paste all objects to a new scene, this is a workaround. I don't know yet what's causing the problems, probably something is the reason from your render settings.

Thank you for your answer. I'll try your recomendations over test scene in a few days and will write the result of them.
By the way, does MoBlur over trails in roadmap to implement?

desire wrote:

aoktar wrote: Remove motion blur on Trail object, it's actually not supported and cause problems. Also copy/paste all objects to a new scene, this is a workaround. I don't know yet what's causing the problems, probably something is the reason from your render settings.

Thank you for your answer. I'll try your recomendations over test scene in a few days and will write the result of them.
By the way, does MoBlur over trails in roadmap to implement?

Not in my roadmap, it's not safely possible because of inequable vertex amounts.

desire wrote:

stefano-dear wrote:Hi,

with old files the live viewer works correctly, but if I launch in render it always crashes

Try to delete and create new settings at RenderSettings, and after creating, choose it and send render to PV.
May be it wouldn't work, but it helps me fix crashes with old scenes and last plugin versions.

Thank you! Your solution solve the crash

Is there chance to get Octane Scatter to work with distribution shader in Poisson mode ? I mean distribution of individual object clones driven by shader like in surface mode.
This mode is insane fast but mostly useless if we don't have possibility to set individual clones distribution other than pure random.

SSmolak wrote:Is there chance to get Octane Scatter to work with distribution shader in Poisson mode ? I mean distribution of individual object clones driven by shader like in surface mode.
This mode is insane fast but mostly useless if we don't have possibility to set individual clones distribution other than pure random.

As I understand it, Scatter can't work with GPU shaders, only CPU shaders, because of the way Scatter uses C4D's own internal routines. Octane native shaders are all GPU, but the brown C4D nodes in the Node Editor use CPU, so can drive the Poisson distribution on a surface. The options are a bit limited compared to the full Octane node set, but it certainly works well in many situations. The other option is to bake out the shader and apply it as an image texture.

frankmci wrote: As I understand it, Scatter can't work with GPU shaders, only CPU shaders, because of the way Scatter uses C4D's own internal routines. Octane native shaders are all GPU, but the brown C4D nodes in the Node Editor use CPU, so can drive the Poisson distribution on a surface. The options are a bit limited compared to the full Octane node set, but it certainly works well in many situations. The other option is to bake out the shader and apply it as an image texture.

Yes, but distribution of individual objects by noise doesn't work in Poisson compared to Surface mode like this :

Surface mode : Poisson mode : Display type set to Object it doesn't update in realtime. Refresh viewport command is needed :