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How to Ouput Alpha Channel Xparticles Cycles4 D

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Hello Everyone, I am a new user of x particles and cycles 4d. I have searched Youtube, Google, and this forum and I cannot find instructions on how to output object buffer alpha channel in an animation using xparticles with simple cycles4D material. I also searched the cycles4D manual and xparticles manual with zero results. This is not the xparticles materials in native xparticles interface, but rather xparticles using the cycles4D material... 

There has got to be a way to output these particles with alpha channel so I can composite in After Effects. Thanks for your help in advance. 


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Hello There,

If you need object ID matte: select the Emitter (or any other objects) assign a cyObject tag on it -> in the "Object Compositing Setting" tab you'll find ObjectID counter.

then in the Render Settings, Go to the "Render Elements" tab and check "Object IDs" under the "IDs" sub-tab. you good to go.

If you just need an alpha on your render: go to render settings under Settings -> Film enable the "Transparent Background" checkbox. then save your renders with alpha.





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