strange clipping in gbuffer lighting pass

[vance3d]

Well I'm finally getting around to using the gbuffer passes in vray and I'm getting this weird clipping of my lights. It seems that instead of progressively adding the light to the model, vray is clipping the lights at the edge of their cones.

Here is my light layout. Its very simple, only 4 lights.
I'm using vray 1.47.03 and 3ds max 7.0

http://home.earthlink.net/~vance3d/_...ght_layout.jpg


here is what I'm getting from the g buffer raw lighting pass. the lighting pass shows similar problems.

http://home.earthlink.net/~vance3d/_...ht_results.jpg

the full render is fine.

is this a bug or have I overlooked something?

V Miller

[jacksc02]

are all the lights set to vray shadows?

[vance3d]

It doesn't matter whether shadows are on or off. It renders the same. And the shadows are set to vray shadows.

[jacksc02]

can you relink the layout image?

[vance3d]

the first link is fixed now

[vlado]

It is a bug, where the G-Buffer would only include information about one of the lights. If you want to get a fix, email me at vlado@chaosgroup.com

Best regards,
Vlado

[vance3d]

I'm glad its a bug and not me.

But this gives me an idea. Do you think it would be possible to do a subset of the raw lighting pass that would allow you to assign object id's
to the individual lights?

You could get passes of isolated lights without having to generate separate renders or do that trick where you give your lights primary colors and separate them in post?

I'll be sending you an email to get that bug fix. Thanks

V Miller

[vlado]

There is no problem to separate the lights into different channels, but with many lights this will take a lot of memory...

Best regards,
Vlado

[vance3d]

i figured that would be the case. I thought it might be more applicable for lighting situations that only contained a few isolated sources or banks of lights that act with one control like a set of recessed lights on a single dimmer.

V Miller