Refraction gradient map

[flat]

Refract Texture is supported in the Chaos Vantage support list below.
https://docs.chaosgroup.com/display/LAV/3ds+Max

If use a simple gradient texture for Refract Texture with IOR 1.0, the result will be different from V-Ray GPU.


Is it simply a Chaos Vantage engine limitation?

Scene attachment
Confirmed in v1.2.1

[vladimir.nedev]

Hm, I am not able to reproduce the issue here. Seem to be working correctly.
What happens if you reload the scene ? Restart the operating system ?

If use a simple gradient texture for Refract Texture with IOR 1.0, the result will be different from V-Ray GPU.

Just a note, procedural textures in the refraction slot will not be calculated for the purpose of shadow transparency.
In your case the gradient is a bitmap file, so it's ok.

Greetings,
Vladimir Nedev

[vladimir.nedev]

What GPU driver version are you using by the way ?

Greetings,
Vladimir Nedev

[Alexander.Atanasov]

Hello,

Can you please try with the denoiser off? There are some limitations to the denoiser regarding refractions and this may be causing this

Best regards,
Alexander

[flat]

What GPU driver version are you using by the way ?

Geforcce RTX 3070 with Studio 461.72.
And Refraction textures are bitmaps (included in the attached zip)

Can you please try with the denoiser off? There are some limitations to the denoiser regarding refractions and this may be causing this

Oh, as you pointed out. Is this the Optix Denoiser spec? If so, it's NVDIA's job.
I hope that this restriction will be removed in the future.