# How to write to different RVTs within one material?

**URL:** <https://forums.unrealengine.com/t/how-to-write-to-different-rvts-within-one-material/2652041>\
**Category:** World Creation\
**Tags:** Virtual-Texturing, unreal-engine, Landscape, question\
**Created:** [August 29, 2025, 8:53am UTC](https://forums.unrealengine.com/t/how-to-write-to-different-rvts-within-one-material/2652041 "2025-08-29T08:53:48Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Extrahdmi](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Extrahdmi](https://forums.unrealengine.com/u/Extrahdmi)\
**Post date:** [August 29, 2025, 8:53am UTC](https://forums.unrealengine.com/t/how-to-write-to-different-rvts-within-one-material/2652041/1 "2025-08-29T08:53:48Z")

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I need mask information in the RVT, but I don’t need very high resolution, so I’m trying to output it to another RVT.  
But the output has no way to specify which RVT to write to.

Does anyone know a solution?

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**Author:** ![Viceroy](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/viceroy/32/1059369_2.png) [@Viceroy](https://forums.unrealengine.com/u/Viceroy)\
**Post date:** [August 29, 2025, 10:49am UTC](https://forums.unrealengine.com/t/how-to-write-to-different-rvts-within-one-material/2652041/2 "2025-08-29T10:49:08Z")

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Hi, you can’t specify a particular RVT, but you can target a specific channel — which is what you need in your case. You can output it to the Mask4 output, and with this channel you can have up to four different masks.

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**Author:** ![Extrahdmi](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Extrahdmi](https://forums.unrealengine.com/u/Extrahdmi)\
**Post date:** [August 29, 2025, 1:24pm UTC](https://forums.unrealengine.com/t/how-to-write-to-different-rvts-within-one-material/2652041/3 "2025-08-29T13:24:52Z")

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That’s disappointing. For large-scale or complex levels, those channels will run out. I don’t think the advantage of having multiple RVTs available is being utilized.