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PNG render issue

Posted: Sat Sep 05, 2020 2:52 pm
by Anamika Roy Choudhury
Unable to render png texture (transparent background)in GPU...Problem only in GPU , renders well in CPU

Re: PNG render issue

Posted: Wed Sep 09, 2020 2:35 pm
by Forum Moderator
Hello,

Could we see a screenshot showing the problem? Also, it would be interesting to see the texture and how are you applying it in SketchUp.

Thank you for reporting the problem.

Kind regards,
Fernando

Re: PNG render issue

Posted: Thu Sep 10, 2020 5:34 pm
by Anamika Roy Choudhury
Attaching the images of CPU & GPU render...The sketchup model is 3d warehouse download , a billboard

Re: PNG render issue

Posted: Mon Sep 14, 2020 7:49 pm
by Anamika Roy Choudhury
Hi Fernando, any guess?

Re: PNG render issue

Posted: Tue Sep 15, 2020 11:02 am
by Forum Moderator
Hi Anamika,

I'm testing this here and I see some discrepancies between CPU and GPU when using the Override Map feature combined with tiling. I'm not sure exactly what's the problem yet. It could also have to do with the meters tiling method.

Would it be possible to check the material here?

Thanks!
Fernando

Re: PNG render issue

Posted: Tue Sep 15, 2020 9:45 pm
by Anamika Roy Choudhury
I can share the sketchup file if you can kindly share your email address. Thanks

Re: PNG render issue

Posted: Wed Sep 16, 2020 3:27 pm
by Forum Moderator
Hi Anamika,

I'm sharing it through a private message.
Cheers!
Fernando

Re: PNG render issue

Posted: Thu Sep 17, 2020 11:51 am
by Forum Moderator
Hello Anamika,

I can reproduce the issue here.
That tree material is translated into Maxwell as a material that has a couple of BSDFs and the layer is masked with the same image in "Alpha Only" mode.
Captura de pantalla tree.png
It seems that the GPU engine is ignoring that mode. I have reported that bug and hope it will be fixed in the next version. In the meantime, I think you only have the option to use an mxm material and replace that mask in the layer with an image extracted from the alpha channel of the tree image.

I'll share an mxm material in private. I know it's not as straightforward as the method you use, automatically translated from the SketchUp material, but it's the only alternative I can think of now.

I hope it helps a bit.

Best,
Fernando