my room, lighting problems

[Da_elf]

here is my little try


irradiance map min/max -5 -3
clr thresh, nrm thresh, dist thresh 0.3
hsph subdiv 50
interp samples 60

Secondary multiplier 0.8
depth 10

color mapping type Exponential
dark multiplier 2.5

i changed your falloff on your light from inverse to inverse square and raised the multiplier of the light to 10

Daul AMD 2400+ 1GB ram

i left your materials basically the same. there were some places where you had amounts like 0.8 for reflection glossy without having any reflections i topped it up to 1.0 to get rid of it just incase it was slowing down your render. I left your glossy reflections the same. however with interp glossies it would be faster. ill try interp glossies now actually

[flipside]

Hi Da_elf,

can you post all settings please (maybe some screenshots of the global render settings)? Did you use a different kind of light or just the omni that was in the scene? Did you change parameters there (like decay and stuff)

I really wanna see your settings, that would help me a lot I think. If you can send me the file it would be even better, but I have only max4.26 and demo of vray, so probabely all settings will be dissapeard if I open the file?

Also, is the rendertime of irradiance map calc and rendering, or is this an image rendered with a saved map already?

Thanks,

flipside

<ooops I didn't notice you already did! did you edit your post or am I just blind???>

[flipside]

Hey but a dual amd2400, does this mean 2 times 2400Mhz??? No wonder your render is so fast, that's 6 times faster processor than mine (plus you also have 3 times as much ram, does RAM make rendering quicker?)

[percydaman]

yeah elf, when did you build/buy that monster???

[Da_elf]

well. yeah. definately more power hehe. and yeah. the render time is with the irradiance map. i didnt use a saved map
oh and its 4 minutes rendering with interp glossys

[flipside]

I didn't try much with interpolate glossy reflections, don't understand it very well. I notice it adds extra prepasses, are they completely seperate from the irradiance calculation passes? Also, in my little tests the glossy reflections never looked good with interpolate ON.

What are your settings for the interpolate glossy?

thanks

[Da_elf]

min rate -3 max 0
interp is just a way of speeding up the glossy reflections. i raises the glossy samples to 50

[GoncaloP]

Flipside, if you dont like the inteplotion look try at least with very low subdivisions like 3 until 6 should be quite good for almost all pourposes. The default 50 is good for interpolations.

Gonçalo

[Da_elf]

i opened a window so to speak. you had a window there so hey!! i used it

[flipside]

can't see your image elf!

goncalo, I'm testing things right now, one thing I don't understand already. Scene using geosphere with glossy reflections on:

test1
glossiness=0.7
subdivs=20
interpolate=yes
min=-3
max=0
clr=0.25
nrm=0.4
interpolation samples=20
rendertime=58sec

test2
glossiness=0.7
subdivs=20
interpolate=yes
min=-3
max=0
clr=0.25
nrm=0.4
interpolation samples=1
rendertime=58sec!!!
almost no visual difference!

What is this interpolation samples value???

I thought that it was a replacement for the subdivs from the moment you set interpolate on, but this is not the case (changing subdivs does a lot even with interpolate on)

[Da_elf]

image took a little long to upload

[GoncaloP]

the subdivisions means quality on reflections like hemisphere subd. on the irradiance map. with high subdivisions you will have a high detailed reflection, and 50 is the amount of subdivisions to get a good reflection using the interpolation method.

The interpolation samples is a kind of blur applied to the subdivisiond amount, a little like Filtering on radiosity engines.

Gonçalo

[likuli]

I am sorry to ask,how can I make the VRay logo in the rendering image?

[mike_kennedy]

use the demo

[likuli]

I am sorry ,where is it?