How does VRAY process the Modo Environment material?

[syntaxed2]

As the title suggests I am wondering how the environment material is processed by vray.

Is it considered a hdri or some form of dome light?

Also, is this the replacement for VRAYs internal "environment" tab found in other versions?

[vladimir.nedev]

It is considered a texture. You can use modo's shader tree to blend the environment material with other textures ( for example a gradient with input "environment altitude" ).
And yes, it replaces the environment tab in other versions of V-Ray.

If you enable "Environment importance sampling" in the V-Ray GI tab in the Render item, the environment texture will be applied to a Dome light.
Two dome lights will be created, if the env. textures for GI and reflections are not the same.

Greetings,
Vladimir Nedev

[syntaxed2]

Thank you for the info.

P.S Great job with the embree speed improvements A scene that took 2min in c4dvray takes 36sec with this version.Impressive :P

[vlado]

P.S Great job with the embree speed improvements A scene that took 2min in c4dvray takes 36sec with this version.Impressive :P

Very well then Although this is not due to Embree only (although Embree certainly helps a lot) - we've done a number of other optimizations too.

Best regards,
Vlado

[lllab]

this is mainly due the vray 3 core used i assume, - which i hope Vlado will give us soon too to use (as beta)

[Sebastian Smolak]

Very well then Although this is not due to Embree only (although Embree certainly helps a lot) - we've done a number of other optimizations too.

Best regards,
Vlado

Is there any difference with rendering speed in VRay between Intel processors and AMD Opterons ? As I know Embree is a Intel technology...

[vlado]

Embree will work on AMD processors, and it does run faster than the original V-Ray raycaster, but we have not tested it extensively. So far we have noticed some strange slowdowns when building the raycaster on AMD machines with a lot of cores and we probably need to look into it more.

Best regards,
Vlado