VRayEmbree in Maya

[vlado]

It's there, but it's compiled with AVX instructions enabled, so you need a CPU that supports AVX.

Best regards,
Vlado

[ALFRED_ST_MEDIA]

Intel i7 6-core doesn't have AVX instruction set? Really?

[vlado]

Intel i7 6-core doesn't have AVX instruction set?

Some of the newer ones have AVX, some don't. My workstation for example doesn't, but other machines in the office have it.

Best regards,
Vlado

[Hos]

I get the same error when I try to render on the renderfarm with deadline and then the render fails.
When I render in maya I also get the error but it will continue with rendering.
Is there a way to suppress the error so I can batchrender on computers without the AVX instruction Set?

[vlado]

Hm, good point. You can simply remove the vray_Embree.dll file on the render slaves. I'll make a note to make the error into a warning, if this is what's stopping deadline.

Best regards,
Vlado

[Hos]

Removing the vray_embree.dll solves the problem for me, thanks.

[pechart]

I'll make a note to make the error into a warning, if this is what's stopping deadline.

Best regards,
Vlado

That would be good, thanks.
May I ask if the plugin is always used, even if I don't create an embree helper? Or does the plugin just get imported on rendering or something like that?

[vlado]

May I ask if the plugin is always used, even if I don't create an embree helper? Or does the plugin just get imported on rendering or something like that?

V-Ray just enumerates all the DLLs in the V-Ray plugins folder so that it knows what plugins are available and how to create them. V-Ray will not use the Embree plugin unless you specifically tell it to.

Best regards,
Vlado

[snivlem]

Hey Vlado, just a quick bug with Embree....

If you have a primarily visible vraylightdome and an object containing vrayenvironment fog in front of it, when Embree is on - it'll render black...Delete embree from the scene and the fog renders normally.

Edit: Actually scratch that last bit in light grey, it seems with Embree on, the vray light dome is not visible in refractions regardless if it is fog or vraymtl

[2013/Mar/2|10:43:29] V-Ray: V-Ray for Maya version 2.25.01, revision 22775 from Mar 1 2013, 02:44:50
[2013/Mar/2|10:43:29] V-Ray: V-Ray core version is 2.00.02
[2013/Mar/2|10:43:31] V-Ray: Registered dynamic node vrayMultiProjection
2013.5x64

[Morbid Angel]

Vlado would there be a speed improvement with embree in vray / shave and haircut or is that a Joe Alter question?

[vlado]

Hey Vlado, just a quick bug with Embree....

If you have a primarily visible vraylightdome and an object containing vrayenvironment fog in front of it, when Embree is on - it'll render black...Delete embree from the scene and the fog renders normally.

Edit: Actually scratch that last bit in light grey, it seems with Embree on, the vray light dome is not visible in refractions regardless if it is fog or vraymtl

Thanks for the pointer, will fix it.

Best regards,
Vlado

[vlado]

Vlado would there be a speed improvement with embree in vray / shave and haircut

Nope, none at all. Embree is only for triangles, so it only accelerates mesh intersections.

Technically we could use the same approach for hair intersections, but we would have to modify things quite a bit. Also, hairs are much more sensitive to the precision that is used (since they usually tend to be quite thin) and Embree is single precision only. If it were made in double precision, it will become just as fast as V-Ray regular raycaster.

Best regards,
Vlado