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Has this always been not working and so waiting to implement, or is it not an achievable thing?
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Could you elaborate a bit more on the issue you are having? Maybe post a screenshot/simple scene, so we can take a look? -
Sorry, I thought it was probably spotted before. Here is the result from the exact same setup.Attached FilesComment
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So I just noticed you replied to this thread https://forums.chaosgroup.com/forum/...-wrapper-alpha
I'm therefore assuming this is the same basic non-implemented feature.
Which is a shame
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Unsure if this is the same issue, best you send the scene to support@chaosgroup.com so we can take a look and make a conclusion. Mention your V-Ray, host platform, GPU model/s, graphics driver versions and a link to this thread in the e-mail.Comment
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Actually yes I agree, it's different.
I just simplified the scene to send and noticed that with it set NOT to be a matte material but with the alpha contribution of 1.0 there are no reflections even in the beauty, though bizarrely if you set the alpha to -1.0 then they appear.
https://www.dropbox.com/s/4quxcast7ck20v4/test.max?dl=0
Vray 3.1 4.30.01 2080ti rtx win 10 441.41 driverComment
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Thanks for the provided scene. I am unsure what end result you would wish to produce since we changed the focus of the issue. From what I understood, you would like to see both the reflections and shadows in the alpha channel via the matte plane when rendering on the GPU? Is that correct?Comment
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Yes, just the same behaviour as what happens when using CPU only. Usage would be a product on a shiny black floor for example as in a recent post I commented on.
I only discovered the GPU issue by replying with a process for doing this kind of shot.
The GPU result is as in the scene and the images in this post - it's currently not possible to have the reflection appear in the matte at all.
Apologies - I didn't intend to change the focus - it's just something extra weird that I happened to notice when sending the simple scene. It's surely not intended to work like that.
Do you see what I mean in the general sense?
I can provide more example images of what exactly is happening and the various settings used, if that helps, although that scene should exemplify it all.Comment
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I understand, however, currently, you cannot have both the reflections and the matte shadows in the alpha with V-Ray GPU (as you already concluded). Our developers are informed about the issue and it is on their to-do lists.Comment
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Cool...all I needed to know, thanks
Just typical I guess for me, in that I just got a major gfx upgrade only to find that a lot of the things I wanted to utilise don't currently work.
Luckily I got a new cpu too, so not all lost and hopefully gpu fixes upcoming at some point.Comment
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