Vray 5 mesh light

[royal_metropolitanespaa]

Hello!
I'm searching the Vray mesh light for Vray 5 C4D...but I don't find it.
I want lighting an interior office with some linear lamps, and circular lamps.
In Vray 3.7 you can link a mesh or solid to a Vray Area Light, but In this upgrade it seems like there're some utilities out...or maybe simply I can't find them?
In linear lights I easily can put a rectangle light, but for the ring lamp I can't use any light that the actual engine offers...

Thanks for the help!

[sirio76]

Use the light material

[aleksandar.kasabov]

Hello royal_metropolitanespaa ,

V-Ray Mesh light is not yet implemented in V-Ray 5 for Cinema4D. It is on our to-do list and it will be added in the future.

Until then you can use Light material to produce self-illuminated surfaces.

[steilvorlage.de]

But there is no multiplier for the light material to push the light, right?

[aleksandar.kasabov]

Hello steilvorlage.de ,

You can control the intensity of the emitted light via the "Color Multiplier" option in the parameters of the light material.

[steilvorlage.de]

Ah shure, sorry. I was in the usual vray-mateial/self illumination. Thank you

[HarrySeidl]

I hope, it will be supported as fast as possible... Need it!

[aleksandar.kasabov]

Hello HarrySeidl,

We are aiming to introduce the missing V-Ray 3.7 features to V-Ray 5 for Cinema4D excluding the ones that are considered deprecated. Mesh light is on our to-do list but we cannot provide any specific timeframes on when it will be implemented. Thank you for your understanding.

[YunalZobu]

You could still achieve plenty with the emissive material applied to a custom mesh.
There are a few limitations, but for the most common cases it does just fine

[HarrySeidl]

Thanks for your feedback, I understand...

[JeremyLondonMDL]

In V-Ray 5 for C4D I've tried to create a mesh light effect using the VRayLightMtl, but have had no success. No matter how high I set the Color Multiplier, the material seems to only self-illuminate, and cast very weak, poor quality lighting into the scene.

The V-Ray 5 documentation mentions 'Direct Illumination' under Light Material > Parameters > Compensate Exposure (see attached screenshot), but I can't find where to turn Direct Illumination on.

Is it currently possible in V-Ray 5 to create a light material similar to the Advanced Material in V-Ray 3.7? The V-Ray 5 Light Material seems to only function like an old Advanced Material that has it's Direct Illumination de-activated.

Thanks

[aleksandar.kasabov]

Hello JeremyLondonMDL,

Please note that the "direct illumination" optimization, which will allow the light material to behave as an actual mesh light has not yet been implemented inside V-Ray 5 for Cinema4D. This is on our to-do list and will be implemented in the future. I will update the thread once it is implemented.

This topic has already been discussed in this forum thread.

I would also like to thank you for your feedback about our documentation page. I will make sure to let our relevant team know and update the documentation accordingly.

[JeremyLondonMDL]

Hi Aleksandar

Do you have an estimated timeframe for the implementation of Mesh Lights and Light Material Direct Illumination in V-Ray 5 for C4D?

At present I've had to keep many of my projects in C4D R20 and V-Ray 3.7, as they rely on these features.

Thanks

[aleksandar.kasabov]

Hello JeremyLondonMDL,

I can really provide any timeframe that implementing those features might take. They are on our to-do list with bumped priority and I will keep you posted about any updates. Your understanding is highly appreciated!