This page provides information on the Material ID Render Element which isolates objects with specific materials by Material ID for compositing purposes.




The Material ID Render Element provides a mask for individual objects and materials that is easy to select in compositing software.

This render element shows solid unshaded color masks based on the selected Material ID color values that can be set using the Material ID Extra V-Ray Attributes .



UI Path

||out Network|| > V-Ray Render Elements node > V-Ray > Render Channel > Color Channel > Type > Material ID


The parameters for this render element appear in the V-Ray RenderChannelColor render channels node.


Denoise – Enables the render element's denoising, provided the Denoiser render element is present.

Consider for Anti-Aliasing – When enabled, anti-aliasing will be used where possible.

Filtering – Applies the image filter to this channel. Image filter settings are in the Image Sampler tab of the Sampler tab of the V-Ray Renderer node.

Color Mapping – When enabled, the Color Mapping options in the render settings will be applied to the current render channel.

Derive Raw Channels – Generates data in the raw channels by combining the respective color and the filter color channels.

VFB Color Corrections – Applies the post render color adjustments made from the VFB.


Common Uses

The Material ID Render Element is useful for isolating geometry in a scene so it can be enhanced or adjusted with post-production or compositing software.



Material ID Render Element


Matte created in composite using the red channel (as a mask in the composite)




The Reflections of the the areas masked by the resulting matte have been tinted



Original Beauty render


A green tint has been added using Material ID Render Element
red channel (as a mask in the composite)






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