Background image support, screen mapping. Where is it?

[Rik]

I've seen that it's possible to have an image in the background of the render view in standalone octane and it looks very useful. (see the yellow lambo demo clip halfway through the 1.2 release video)

I can't find this feature in octane on max though. Every time I get an image in the background it ends up stretched due to the mapping being spherical. The options in the projection slot of the map are box, cylindrical, mesh uv, perspective, spherical and xyz to uvw.

PLEASE tell me where the option for just the basic screen mapping is.
It's the default environment mapping option in max but octane doesn't even seem to offer it as an option. What the....

[[email protected]]

I just waned to post a topic about this too, since we do a LOT of commercials, a lot of them are bright, and when I click in Kernel type "alpha channel", my background isolates and it turns black.... I would love to be able to change that background color... at the moment I would like it to be white!

if that small feature could be added, it would be really helpful for a lot of projects, not to mention background image, for some tracking stuff

[Rik]

Ha. Asked this 9 years ago

Don't suppose anyone know how to do it now?

[HHbomb]

Hi,

In Render Setup window > Kernel > Render view settings > Use viewport background : checked

and Kernel > Kernel type > Alpha channel : checked

I found it

[Rik]

Ha, cheers!

Trouble with that method is you can't put the texture into material editor to do colour correction adjustments so need to do them in photoshop and reload which seems a bit crap.

I'll ask again in another 9 years though

[neonZorglub]

Ha, cheers!

Trouble with that method is you can't put the texture into material editor to do colour correction adjustments so need to do them in photoshop and reload which seems a bit crap.

I'll ask again in another 9 years though

Hi Rik,
That's right, the 'Use viewport background' method is quite limited..

Using AOVs should give you all the adjustments and effects you need:
viewtopic.php?f=27&t=82109&p=426787#p426787

Thanks

[Rik]

Hi Neon. Thanks for that.
Do you think we should be using AOVs rather than the post processing of the camera?

Almost there but a couple of issues...

I can't find a way to put transforms on the background image. Is there no way to change the position/scale/rotation as you can normally with images?
It would be much more intuitive and controllable than the 'resize type' options which are pretty useless in comparison to just a simple transform map.

If we could connect an RGB map or standard bitmap to the filename input that might work?

Using this AOV method I can't find a way to insert a colour correction map for the image file. So no adjustments can be made anyway. Is this fixable?

I've managed to put a bloom layer on but the settings don't seem to work. No matter what I do the bloom affects the whole image with no cutoff as in the camera post processing.

[neonZorglub]

Hi Neon. Thanks for that.
Do you think we should be using AOVs rather than the post processing of the camera?

Almost there but a couple of issues...

I can't find a way to put transforms on the background image. Is there no way to change the position/scale/rotation as you can normally with images?
It would be much more intuitive and controllable than the 'resize type' options which are pretty useless in comparison to just a simple transform map.

If we could connect an RGB map or standard bitmap to the filename input that might work?

Using this AOV method I can't find a way to insert a colour correction map for the image file. So no adjustments can be made anyway. Is this fixable?

I've managed to put a bloom layer on but the settings don't seem to work. No matter what I do the bloom affects the whole image with no cutoff as in the camera post processing.

Screenshot 2023-12-12 075923.jpg

Hi Rik,
-The AOV system is more powerful and flexible than the post processing, so it's probably preferable. It is also in active development, so new layers will be added progressively in new versions.

-The image layer has no transformation options. The scaling I added is specific to 3dsMax, to try to match the background image that can be added to a 3dsMax viewport.
This resize is quite limited, and is done 'by hand' in the CPU, so has a limited quality.. It would be preferable to set your screen resolution for your project, and prepare an image with the matching size, and select None in the resize option.
For other effects, you should be able to add layers to adjust the image layer, but they should be all inside a 'layer group' together with the image layer..

-In Version 2024, there is just what you need : an Octane Texture layer, so you can use a RGB image texture, with all the usual transformations and effects.
I'll try to release the current version 2024 in the coming week.
[EDIT: version 2024.1-Alpha 1 released here: viewtopic.php?f=80&t=82802]
Thanks

[Rik]

Sounds great, thanks! Did you mean version 2024?
Had a look at the info for 2024 and it looks great, particularly the more efficient memory use as I'm still having issues with parallel samples/2 cards/running out of Vram. Hopefully this will be sorted.

Did you get a chance to check the bloom cutoff AOV not working?

[neonZorglub]

Sounds great, thanks! Did you mean version 2024?
Had a look at the info for 2024 and it looks great, particularly the more efficient memory use as I'm still having issues with parallel samples/2 cards/running out of Vram. Hopefully this will be sorted.

Did you get a chance to check the bloom cutoff AOV not working?

Hi Rik,
The AOV bloom parameters seems to work, but the values of Spread start need to be very low, and are not easy to edit with 3dsMax default values settings (digit / precision settings..)
I'll try to add an internal multiplier to make it easier to edit..
You can try with the Octane Node Graph window, to move sliders and get an idea of the good values.. :

For effects on AOV image, here are some screenshots and samples (sorry, for max 2021+):

AOV_Image_effects.zip

(251.39 KiB) Downloaded 71 times

aov_img_fx02_mx21.max is for current version 2023
O24_aov_img_fx2402_mx20.max is for alpha version 2024, and uses the new AOV blend texture.

Here is the graph for version 2024 / Aov textures:

I hope that helps
Thanks