my blotchy image

[Dave Oliver]

this is sort of a continuation of my other thread.

 

fill size irradiance map

QMC secondary bounces

subdivisions:150

samples:75

passes: -3 to -1

everything else default i think

 

is it better to render a half-size map of better quality than full size one?

[pyang]

try pass -5,-4

 

you will lose some detail but image would be smooth, no blotchy.

 

 

this is sort of a continuation of my other thread.

 

fill size irradiance map

QMC secondary bounces

subdivisions:150

samples:75

passes: -3 to -1

everything else default i think

 

is it better to render a half-size map of better quality than full size one?

[Ricardo Eloy]

I personally don't like this approach. Using such low settings will give you a terrible GI solution, and the case here is to increase quality. IMHO, using -5,-4 is almost like using nothing at all.

First, take a close look at your materials. Make sure they are all VRayMatl (not standard and, especially, not raytrace). Then, take a look at the lights and their subdivs. If everything is fine, try changing things to:

IrrMap - Low, with Hemisph.Subdivs at 60 and Interp. Samples at 40 (it's just a test)

LightCache instead of QMC, using 500 and 0.02 (screen).

Also, check your QMC Sampler settings and make sure they're default (0.85 and 0.01).

Render and see what changes (and call us in the morning )

[Dave Oliver]

ok, im ready for the next step.

 

to follow your instructions i had to remove the self illuminating standard materials that were acting as lit up screens. i have not created that kind of texture in vray before.

 

thanks for walking me through this

[Ricardo Eloy]

Self-illuminating materials (even VRay's LightMatl) can cause this kind of blotchiness. I use the very little because of that.

[DennisHolland]

After adjusting lighting/mats, adjust you're camera for a nicer look. The scene is too nice to render with this settings.

[Dave Oliver]

so i can i have a material that that is uniformly, brightly illuminated so it looks like a screen?

 

and does anyone have a recommendation on how much i might want to increase my rendering settings without going way overboard like i tend to do?

[Fran]

For self-illumination without actually emitting light, apply your vraylight material to the object, then right-click the object and uncheck Generate GI from Vray object properties.

[Dave Oliver]

thanks!

[Dave Oliver]

i almost have it, but, the last problem is the noise on a couple reflective objects. if anyone knows which setting affects this, let me know.

 

thanks

[fareen]

i think its the material not the rendering settings

 

maybe the subdivisions are too low and try turning off the use interpolation in the material

[rivoli]

you may want to try clamping the output and checking sub-pixel mapping. you'll find them under color mapping in the vray tab.