Help Needed Rendering a Car Engine

For all the users of Twilight Render (V1 & V2), to ask questions and get started
Fletch
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Re: Help Needed Rendering a Car Engine

Post by Fletch » Mon Feb 22, 2021 12:29 am

ntxdave wrote: Sun Feb 21, 2021 11:04 pm ... Now I want to go off and try the aplha mask thing..........not sure I totally get what I am supposed to do but want to learn it anyway....even though I have Gimp installed, I have not really used it so I am a little confused about what I am supposed to do.
Subject: Auto "Alpha mask"
Fletch wrote: Thu Jan 24, 2019 11:18 am In GIMP this video tutorial explains how to copy and paste your black and white image into the alpha mask channel for your rendered image layer (I don't use GIMP, I use Photoshop)...
Image

ntxdave
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Re: Help Needed Rendering a Car Engine

Post by ntxdave » Tue Feb 23, 2021 12:03 am

Well, it took a lot of "fooling around" but I finally got the AlphaMask feature to work. I actually had to use Gimp and another tool (did not learn how to do some things in Gimp yet) but here is an image I created where I used the alpha mask to create a couple of images with a transparent background. I then combined them in Xara with a silly color background just to show that I got it to work. Here is the image:
AlphaMaskingTest.png
AlphaMaskingTest.png (229.63 KiB) Viewed 61 times
Gotta do some more learning in Gimp so I can do the whole process there. Hope you guys like this one.

Fletch
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Re: Help Needed Rendering a Car Engine

Post by Fletch » Tue Feb 23, 2021 7:39 am

:^:

ntxdave
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Re: Help Needed Rendering a Car Engine

Post by ntxdave » Tue Feb 23, 2021 2:34 pm

Thanks Fletch.

Was your input that got me interested in this. Wish I would have known how to do this sooner. I can see many uses for this approach. You have also peaked my interest in learning Gimp. Just proves that retirement does mean we cannot still learn and have some fun. :whoot:

ntxdave
Posts: 376
Joined: Tue Feb 23, 2016 7:05 pm
OS: Win 10
SketchUp: 2019Pro

Re: Help Needed Rendering a Car Engine

Post by ntxdave » Thu Feb 25, 2021 6:51 pm

One last post (at least in this thread ;) ) after doing a little bit more playing around. Still have a ways to go to learn GIMP better.
Alpha Mask Practive
Alpha Mask Practive
ReversedBlower_MaskedRender_Presentation.png (283.39 KiB) Viewed 38 times

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