Hi SideFX Support Team
I'm starting a R&D about build a shader network for Houdini Pyro
and this is my very basic result
https://vimeo.com/160864421 [vimeo.com]
i have many issue :cry:
please help me
1 - when i connected a PxrRamp to PxrVolume emit color . my render look is changed. if you see carefully in video there is a lot of grid pattern in pyro
2 - the second issue is Denoiser . after denoising all indirect data around my pyro is gone
3 - Distant Light not work in Houdini
and finally i have a question
How can i use REST attribute in renderman . i know about attribute import but i don' know after import in ris network how connected to my noise pattern like (REST in Mantra)
(i can't attach the hip in this part. after My RnD is completed i'll share it at renderman community but if you need the file please send me your email )
Thanks in advance
Morteza Ghamari
Pyro Renderman RIS Shader RnD
4113 3 1-
- Morteza Ghamari
- Member
- 9 posts
- Joined: June 2015
- Offline
-
- Morteza Ghamari
- Member
- 9 posts
- Joined: June 2015
- Offline
-
- rafal
- Staff
- 1450 posts
- Joined: July 2005
- Offline
I'm not quite sure about the reason for the grid pattern. I assume you've already looked thru this for any clues on volume rendering:
https://renderman.pixar.com/resources/current/RenderMan/rfhVolumeExample.html [renderman.pixar.com]
In Houdini, denoise option on the ROP just writes out the AOVs needed for denoising. I'm not sure if the issue is with your idirect data not being written out to the .rib stream or with denoiser removing it.
Distant light seems not to be a real shader parameter on PxrStdAreaLight, so it's possible that Houdini does not handle it properly.
As for REST attribute, as you said, you should be able to import it with PxrPrimvar shader. After that, you should be able to just wire the PxrPrimvar's output to the noise node's input. Also, you can write out the RenderMan attribute for shaders using Attribute Rename ('attribute') SOP, which has a tab for them.
https://renderman.pixar.com/resources/current/RenderMan/rfhVolumeExample.html [renderman.pixar.com]
In Houdini, denoise option on the ROP just writes out the AOVs needed for denoising. I'm not sure if the issue is with your idirect data not being written out to the .rib stream or with denoiser removing it.
Distant light seems not to be a real shader parameter on PxrStdAreaLight, so it's possible that Houdini does not handle it properly.
As for REST attribute, as you said, you should be able to import it with PxrPrimvar shader. After that, you should be able to just wire the PxrPrimvar's output to the noise node's input. Also, you can write out the RenderMan attribute for shaders using Attribute Rename ('attribute') SOP, which has a tab for them.
-
- Morteza Ghamari
- Member
- 9 posts
- Joined: June 2015
- Offline
Thanks Rafal for Rest advice
but other my issue not solved yet
I post in renderman forum but there is no sound in renderman for Houdini forum
https://renderman.pixar.com/forum/showthread.php?s=&threadid=30774 [renderman.pixar.com]
I think there are many issue in RfH 20 and we must waiting for 21
Thanks Rafal
Morteza
but other my issue not solved yet
I post in renderman forum but there is no sound in renderman for Houdini forum
https://renderman.pixar.com/forum/showthread.php?s=&threadid=30774 [renderman.pixar.com]
I think there are many issue in RfH 20 and we must waiting for 21
Thanks Rafal
Morteza
-
- Quick Links