More complete rendervar support

[Dan Andersen]

Hello,

I think there's some rendervars missing. To me, the most important ones I still have to grab from out/ context are sampleRate (fetched via RenderChannelColor) and RenderChannelExtraTex for arbitrary texture vars.

Are there any usd/solaris specific obstacles to implementing these, or are they on the way?

Thanks,
Dan

[bdancer]

I don't understand the issue, sorry.

> the most important ones I still have to grab from out/ are sampleRate

I'm not sure I get it. You don't like the "sampler:<output>" syntax?

> RenderChannelExtraTex for arbitrary texture vars.

There are extra tex bind node, then you set source name to "extratex" and then specify bind name in settings.

> Are there any usd/solaris specific obstacles to implementing these

Implementing what? Could you share a hip file that doesn't work?

[Dan Andersen]

Thanks for the info - perhaps there isn't an issue. I've been using the V-Ray Standard Render Vars lop and failed to notice the more generic "Render Var" lop is supported in VRay.

I'll have another look and see how it works. 2 follow-up questions:
- 1) Are the workflows you mention documented somewhere? ("There are extra tex bind node, then you set source name to "extratex" and then specify bind name in settings" and "sampler:<output>" syntax). The only thing I found on render vars in the VRay/Solaris docs was this https://docs.chaos.com/display/VRAYH...rd+Render+Vars.
- 2) Does the "Sample Rate" element exist? Would that just be sampler:sampleRate ?

[bdancer]

V-Ray Standard Render Vars is basically just a collection of render var nodes inside.

1. Not sure yet... You could check this https://gist.github.com/bdancer/6725...00790cd7bab5df
2. For the sampleRate it's just "sampleRate" and raw type.

[Dan Andersen]

Great, thanks for clearing this up. Makes sense now