Color spots in V-ray

[arquichido]

Hi everybody:

I'm having some troubles with V-ray, when I start a render the log says: "Invalid color or excesive brightness", or so. The renders pop out with some nice "color spots" that look awful, especially when I use the Speed Tree plugin. Any idea about how to correct this?

Thanks

[Tommy L]

Sounds like a stray raytrace material. Are all your materials vray materials?

[arquichido]

Yeah, all of them, I even converted the whole scene with the v-ray convertor, I think the trouble is with RPC and the Speed Trees, because the log mentioned them as overbrighted elements. I collected the bitmaps with the resource collector in order to modify them and look at the speed tree *tif bitmaps, but I don't know how to edit the maps.

Thank for your suggestion.

[Tommy L]

Exclude the rpcs from the lighting, especially the GI.

[arquichido]

Ok Tommy, thanks for the tip

I'll exclude the rpc's and see what happens

[redzuan3828]

Exclude the rpcs from the lighting, especially the GI.

 

How RPC create shadow?

Give anothers lighting for RPC?

[SandmanNinja]

How RPC create shadow?

Give anothers lighting for RPC?

 

Make a shadow generator:

 

1) free direct light

2) put it where you want it to cast shadows from

3) modify shadows [x] ticked

4) intensity 0.1 multiplier colour is black

5) directional parameters=rectangle

6) shadow map parameters: sample range 35

7) shadow parameters: colour: 210 or so & Dense: -3 (if density

 

This information was gleened from http://www.kristopherlee.com/

[Tommy L]

create a projector map for the light for RPC shadows:

 

1 render the view from the light (1/1 aspect ratio)

2 then render again with only rpcs turned on

3 in PS check whick rpcs can be seen by the light by overlaying 2 renders

4 make b/w image of the rpcs that cast shadows

5 put image in the projector map slot in the advanced tab in the light in modifier panel

 

voila.

[redzuan3828]

thanks guy

[arquichido]

Hi Guys

Thank For The Feedback, It Worked! The Model Looks Much Better

But...how Can I Get Off The Rpc's (mainly Cars) From The Gi? 'cause I Exclude Them From The Vray Light In The Model, But They're Still "sprayi'n" Those Rare Spots.

[Tommy L]

Right click, vray propreties, untick visible to GI.

[ipxstudios]

Go to the "Vray system" usually found at the bottom of the list and unckeck "max compatible shade context". This fixed all the color spots I was getting.