MODO Material Support (CPU and GPU)

[vladimir.nedev]

I will use this thread to report on any improvements to the support of the MODO material.

Today's nightly build ( 2016.05.30 ) has some improvements in RT GPU mode.
- fresnel reflections were too dim (still not the same as CPU for now)
- the "blurry reflections" option is now respected
- added clear-coat amount support

Note that I am rewriting the MODO material support from scratch with the idea to make it the same in CPU and GPU mode, and also fix some issues with the CPU support as well.
But it will take some more time.

Here are some comparisons, before and after the improvements in today's nightly build.
First image is CPU render, second is new GPU, and third is old GPU.
The materials are from the MODO preset library.

Stone/Architectural/Granite


Greetings,
Vladimir Nedev

[vladimir.nedev]

From Wood/Flooring



Greetings,
Vladimir Nedev

[vladimir.nedev]

From Wood/Mahogany



Greetings,
Vladimir Nedev

[vladimir.nedev]

From Plastic/High Gloss



Greetings,
Vladimir Nedev

[vladimir.nedev]

And from the MODO Sample scenes, Modo_Raygun.lxo



Greetings,
Vladimir Nedev

[BVA]

Note that I am rewriting the MODO material support from scratch with the idea to make it the same in CPU and GPU mode, and also fix some issues with the CPU support as well.
But it will take some more time.

Hi Vladimir

I understand this will be a work in progress. I am not sure if we should report issues now or wait till you are done with the new code?

I was testing this but my GPU renders the materials blurred compared to cpu. see attached.
I just tried the marble that was in the preset library.


I also tried a glass from the presets but that renders completely different between GPU and CPU

[vladimir.nedev]

I understand this will be a work in progress. I am not sure if we should report issues now or wait till you are done with the new code?

Yes, report the issues, it will help me test the new code.

I was testing this but my GPU renders the materials blurred compared to cpu. see attached.

This is because the textures are downscaled a lot for the GPU rendering by default.
You can change it here :

Either increase GPU Texture Size or select Transfer "as is" in GPU Resize Textures.

I also tried a glass from the presets but that renders completely different between GPU and CPU

Which material is this ?
My RT GPU export code doesn't support the absorption distance channel (the CPU does).
Also in order to have the same results, you must enable Double Sided.
Not sure if I will be able to fix the double sided differences, but the absorption I will do at some point.


Greetings,
Vladimir Nedev

[BVA]

Which material is this ?

I am not sure, one of the preset glass materials.
I was actually just trying to load materials without procedurals to test how they work compared to Vray materials.