octane 3.0 houdini, particles, other stuff.

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octane 3.0 houdini, particles, other stuff.

Postby xcaseyx » Wed Apr 06, 2016 8:52 pm

xcaseyx Wed Apr 06, 2016 8:52 pm
with the approach of octane 3.0 I was curious what the state of houdini particles in octane was. Can you carry over values like age/velocity/scale into the shaders? (like arnold or mantra) Im currently using octane in cinema 4d, and its lack of x-particles support is beyond frustrating.


so basically whoever gets particle support first is where Ill be using octane.. is that going to be houdini?
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Re: octane 3.0 houdini, particles, other stuff.

Postby juanjgon » Wed Apr 06, 2016 9:15 pm

juanjgon Wed Apr 06, 2016 9:15 pm
Currently Octane doesn't support custom attributes. This is something that is going to be added along the 3.x dev cycle, once the OSL support is ready to write the shader nodes needed to read these attributes.

You can render the Houdini particles with Octane using the Octane instancing features, but we don't have particle attributes support yet.

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Re: octane 3.0 houdini, particles, other stuff.

Postby cybernetix » Sun Jun 05, 2016 4:56 pm

cybernetix Sun Jun 05, 2016 4:56 pm
Hi there, any idea as to when that might happen?
juanjgon wrote:Currently Octane doesn't support custom attributes. This is something that is going to be added along the 3.x dev cycle, once the OSL support is ready to write the shader nodes needed to read these attributes.

You can render the Houdini particles with Octane using the Octane instancing features, but we don't have particle attributes support yet.

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Re: octane 3.0 houdini, particles, other stuff.

Postby juanjgon » Mon Jun 06, 2016 7:57 am

juanjgon Mon Jun 06, 2016 7:57 am
Not yet, sorry. In the near future I'll add to the plugin the support of the Octane native sphere primitive to help rendering large amount of particles, but from the shading point of view I don't know where the custom point, polygon, instance or particle attributes will be supported.

Thanks for your patience,
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Re: octane 3.0 houdini, particles, other stuff.

Postby s---70 » Tue Jun 14, 2016 7:00 pm

s---70 Tue Jun 14, 2016 7:00 pm
How can I render particles with motion blur? when I turn on instance motion blur in the render node, it tells me to add octane obj spare parameters to the instance node, but they dont appear when I click the corresponding button. Only on non-instance geometry nodes. Is this a bug?
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Re: octane 3.0 houdini, particles, other stuff.

Postby juanjgon » Tue Jun 14, 2016 7:39 pm

juanjgon Tue Jun 14, 2016 7:39 pm
s---70 wrote:How can I render particles with motion blur? when I turn on instance motion blur in the render node, it tells me to add octane obj spare parameters to the instance node, but they dont appear when I click the corresponding button. Only on non-instance geometry nodes. Is this a bug?


If you have problems related to the instancing motion blur, probably the problem is that the instancer doesn't have the same number of particles among the frames. In this case the motion blur must be computed from the velocity vector attribute, that must be enabled adding the OBJ spare parameters to the instancer node. You have this option in the properties tab.

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Re: octane 3.0 houdini, particles, other stuff.

Postby s---70 » Sun Jun 19, 2016 9:07 am

s---70 Sun Jun 19, 2016 9:07 am
the problem is, that it doesnt let me add the octane parameters to instancer nodes. works with other geometry nodes but not the instancer node.
Version is 3.00.20, maybe I have to update.
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Re: octane 3.0 houdini, particles, other stuff.

Postby juanjgon » Sun Jun 19, 2016 10:07 am

juanjgon Sun Jun 19, 2016 10:07 am
s---70 wrote:the problem is, that it doesnt let me add the octane parameters to instancer nodes. works with other geometry nodes but not the instancer node.
Version is 3.00.20, maybe I have to update.


Weird, so are you saying that you have a Instance OBJ node and you can't add the Octane spare parameters to it? The 3.00.20.0 is the latest build, so this is not the problem.

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Re: octane 3.0 houdini, particles, other stuff.

Postby s---70 » Sun Jun 19, 2016 1:10 pm

s---70 Sun Jun 19, 2016 1:10 pm
ok sorry for the trouble, updated houdini to 15.5 and now it works!
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Re: octane 3.0 houdini, particles, other stuff.

Postby C-You » Tue Jun 21, 2016 5:22 am

C-You Tue Jun 21, 2016 5:22 am
When do we get Houdini color node supported ?
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