topic Is there a way to add AOV output drivers with Python? in Arnold General Rendering Forum

Is there a way to add AOV output drivers with Python?

Anonymous — Thu, 15 Aug 2019 01:13:18 GMT

I'm trying to denoise existing files by adding variance to new output drivers for a lot of the AOV's. Is there a way to script this?

Thanks!

Re: Is there a way to add AOV output drivers with Python?

Stephen.Blair — Thu, 15 Aug 2019 11:46:07 GMT

You need to render to get the variance AOVs.

You could use the Python api to update an ass file (add driver nodes, update the options.output parameter) and then render.

Re: Is there a way to add AOV output drivers with Python?

antoniocarbajoLJEKG — Fri, 18 Mar 2022 01:56:45 GMT

back to this question, if I have certain AOVs on my scene let's say diffuse and specular and I want to run a script to search for those AOVs and create a new driver output for each of them and set this new output to variance, is there a way to do so ?

Thanks

Re: Is there a way to add AOV output drivers with Python?

Stephen.Blair — Fri, 18 Mar 2022 01:58:13 GMT

Since this question is in the Arnold Core Renderer space, my previous answer still applies. You can use the Arnold Python API to load the ass file, inspect the outputs, and modify them (eg add driver nodes, update the options.output parameter)

Re: Is there a way to add AOV output drivers with Python?

antoniocarbajoLJEKG — Fri, 18 Mar 2022 04:33:33 GMT

createNode aiAOVDriver -n "holaD";

createNode aiAOVFilter -n "holaF";

setAttr "holaF.ai_translator" -type "string" "variance";

connectAttr holaF.message aiAOV_test.outputs[1].filter;

connectAttr holaD.message aiAOV_test.outputs[1].driver;

setAttr "defaultRenderGlobals.currentRenderer" -l 0;

setAttr "defaultRenderGlobals.currentRenderer" -type "string" arnold;

deleteUI "unifiedRenderGlobalsWindow";

unifiedRenderGlobalsWindow;