Creating renderElement in python scene access

[jbvfx]

Hi,

Is it possible to create renderElements with the python scene access. I know how to create lightSelects and multimattes, but how do I create elements like specular, diffuse, relfection etc.

I have tried creating the channel with: specChannel = create('RenderChannelColor', 'specChannel')

How do I set the channel to ex. specular?

--
Jacob

[bigbossfr]

Hi,
I will try to explain my workflow when i work with python scene access :
Example : i want to create a specular renderElement in python scene access.

1) I create a empty scene, and create a specular renderElement in Maya.
2) In the Translator Options tab, i disable "render", and enable "Export to a .vrscene file". I set the file name, where i want to export the vrscene.
3) I click on render.
4) Now, i open the exported vrscene with a text editor.
5) You will see your previous specular renderElement in the vrscene.
6) Just copy the type, the name.
For example, for the output plugin, we will have :

SettingsOutput vraySettingsOutput {
  img_width=450;
  img_height=337;
  img_pixelAspect=1;
  img_file="tmp/untitled.png";

The type of the plugin here is "SettingsOutput", the name is "vraySettingsOutput".
Found your previous specular renderElement plugin in the vrscene
7) Create it : create(pluginType, pluginName), in your python script.

Done.

[jbvfx]

Thanks alot bigboss. That approach makes it pretty simple to figure out how to create the different channels.

--
Jacob

[vlado]

How do I set the channel to ex. specular?

You need to set the "alias" parameter of the channel to something that V-Ray understands. As bigbossfr suggested, you can look at existing .vrscene files to figure out the correct numbers. They are also defined in the pixelbuffer.h file from the V-Ray SDK.

Best regards,
Vlado