we still like vray

[atomcraft]

I'd love to see a photo of the Cornel box you made and photographed from an outside angle - it's perfect.

[jonnybefree]

hi vlado, its renderd pure ppt? adaptive?

[vlado]

hi vlado, its renderd pure ppt? adaptive?

Nope, it's based on the universal settings that I posted - QMC + lightcache.

Best regards,
Vlado

[studioDIM]

It does sound most obvious now, but that was the exact direction i took here with 47.03.
And then it took a LONG time on my machine to get the tiniest of details resolved properly, and i let it go.

Lovely way to do lighting though.

Lele

[vlado]

Well, there are two main optimizations that I did to the scene:

(*) I made the light bulb surface to be the lightsource, instead of the wire inside it. This is also more correct, since light bulb manufacturers give the light power for the outside of the light, and not for the wire itself, since a small portion is absorbed by the covering glass. This is not a very significant optimization though and the scene would render without it too.

(*) I used light portals around the bulb to tell v-ray where to look for the light source. This matches more exactly what maxwell does - it knows that the light is an emitter and samples it specifically, whereas by default V-Ray doesn't do anything special about a VRayLightMtl. This optimization reduces the noise a lot. The illumination is still coming from the VRayLightMtl on the light bulb, but V-Ray knows where to look for it.

Adaptive ppt also handles this scene quite well, but not quite as fast.

Best regards,
Vlado

[DaForce]

Vlado can you explain the light portal abit more clearly. Are you talking about the vraylight skylight portal?

[dennis]

(*) I used light portals around the bulb to tell v-ray where to look for the light source. This matches more exactly what maxwell does - it knows that the light is an emitter and samples it specifically, whereas by default V-Ray doesn't do anything special about a VRayLightMtl. This optimization reduces the noise a lot. The illumination is still coming from the VRayLightMtl on the light bulb, but V-Ray knows where to look for it.

brilliant...
i have ditched the lightMtl on occasions because of the noise/rendertime

[Olli96]

Vlado can you explain the light portal abit more clearly. Are you talking about the vraylight skylight portal?

second that...

[ene.xis]

third!
light portals?!?

[DaForce]

Im fairly certain he meant the skylight portal option in vraylights, as the vraylightmtl is a GI based light such as the skylight... ( I think )

[jujubee]

I used light portals around the bulb to tell v-ray where to look for the light source.

Yeah I'd like to know too. Can you post a wireframe?

[studioDIM]

Bump!

What's lightportals?

Please Vlado, drool's about to finish, i'm gonna find myself with a dry mouth soon!

Lele

[Candelero]

I also think he is talking about Skylight portals.

Best regards,
nikki Candelero

[studioDIM]

and why would SKYlight portals take into account the vraylight material?

I'm lost, indeed.
But hell curious :P

Lele

[ene.xis]

and why would SKYlight portals take into account the vraylight material?

can someone shed some light?