# Opacity texture in viewport

**URL:** <https://forums.chaos.com/t/opacity-texture-in-viewport/150847>\
**Category:** General\
**Created:** [June 14, 2021, 8:07am UTC](https://forums.chaos.com/t/opacity-texture-in-viewport/150847 "2021-06-14T08:07:57Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![TeoRossi93](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/teorossi93/32/271581_2.png) [@TeoRossi93](https://forums.chaos.com/u/TeoRossi93)\
**Post date:** [June 14, 2021, 8:07am UTC](https://forums.chaos.com/t/opacity-texture-in-viewport/150847/1 "2021-06-14T08:07:57Z")

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Hey guys,

I always noticed that the opacity channel is not displayed correctly in c4d viewport (see attached image).  
Is this thing going to be fixed in the future?

 ![del1.JPG](https://europe1.discourse-cdn.com/chaosprd/original/3X/7/f/7f837eaa6b90b080e96b41b1f8f105e2683b1216.jpeg)

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**Author:** ![mmarcotic](https://avatars.discourse-cdn.com/v4/letter/m/ed655f/32.png) [@mmarcotic](https://forums.chaos.com/u/mmarcotic)\
**Post date:** [June 14, 2021, 1:43pm UTC](https://forums.chaos.com/t/opacity-texture-in-viewport/150847/2 "2021-06-14T13:43:40Z")

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Hello,

no plans in the immediate future, we plan to tackle this together with Corona Sky viewport’s behaviour, which does not have an ETA yet.

Thanks,  
Jan

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**Author:** ![MattLequesne](https://avatars.discourse-cdn.com/v4/letter/m/54ee81/32.png) [@MattLequesne](https://forums.chaos.com/u/MattLequesne)\
**Post date:** [June 30, 2021, 1:27pm UTC](https://forums.chaos.com/t/opacity-texture-in-viewport/150847/3 "2021-06-30T13:27:54Z")

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This was working in past versions of c4d and corona - a lot of the work I do relies on decals so this is become a bit of an annoyance, requiring Viewport Preview render to adjust decal placement

Would be great to get this feature back!

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**Author:** ![ficdogg](https://dub1.discourse-cdn.com/chaosprd/user_avatar/forums.chaos.com/ficdogg/32/235555_2.png) [@ficdogg](https://forums.chaos.com/u/ficdogg)\
**Post date:** [July 1, 2021, 9:37am UTC](https://forums.chaos.com/t/opacity-texture-in-viewport/150847/4 "2021-07-01T09:37:27Z")

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What I do to get around this limitation, is to set up the decal with a regular c4d material, adjust the projection and position, and then swap it out with a Corona material once I’m satisfied with the placement.

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**Author:** ![HFPatzi](https://avatars.discourse-cdn.com/v4/letter/h/ee59a6/32.png) [@HFPatzi](https://forums.chaos.com/u/HFPatzi)\
**Post date:** [July 12, 2021, 6:49am UTC](https://forums.chaos.com/t/opacity-texture-in-viewport/150847/5 "2021-07-12T06:49:34Z")

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Hi,

from my understanding, corona utilizes the Diffuse channel to be displayed in the viewport. what i do is cpoying the opacity texture to the diffuse channel for placement. after that i simply set the mix strenght to 0% or delete the texture in diffuse. Not sure if you have to deactivate the opacity channel while placing your decal though.

Not the smoothest way of doing it but i see no other solution right now.

Maybe this helps 😉

Greetings,  
Moritz