White Background

V-Ray for 3ds Max V-Ray for 3ds Max :: Issues
1

How do I render with a white background?

2

I override the GI environment to black.

3

It depends on why you want to.

If it’s your typical exterior you do, then stick your HDRI in the VRAY environment override. Then in the max environment just make your background white (or stick any bitmap in there). The vray override will use the override as the environment, and the max one will just be used for literally a background and wont affect your lighting etc…

4

that’s what I tried, but the background is a dark gray.

5

I only use the HDRI in a dome light only for reflections…what type of rendering are you trying to achieve? If its a studio type, use the mtlwrapper on a vray plane with matte for reflection and refraction and exclude reflections from the dome light.

6

The one that Morne suggested + VRayColor in the background slot - white with RGB multiplier high as you need :slight_smile:

7

That’s a great tip, never thought to use a VRayColor in the environment slot..

8

in environment make sure that your “Ambient:” is black

9

thanks, these are very helpful tips…
Slizer’s is new to me, and am looking forward to try out today!

10

cant you just exclude the environment from exposure control?

11

I’ve done this, but it just seems to peak out a “non-brilliant” white, so I want to try slizer’s suggestion for more control…

edit: well, maybe not exactly…I just told V-Ray color mapping not to affect BG.

12

I tried that myself, without sucess. seems like the dome is always visible in grey.

Thanks

WhiteBackground2.PNG
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WhiteBackground3.PNG
WhiteBackground3.PNG2488Ă—1222 233 KB

13

Can you explain how do you exclude the reflection from the dome light on the plane?
Thanks

14

just tested my suggestion and the color of the white is 255,255,255
what sort of white r you after?

15

I probably do something wrong with your method…
please find attached a test scene.
As you can see, the background is not white.

Other method failed too. Using a vraycolor (white) with a multiplier of 50 in the GI environment doesn’t change anything.

Thanks

Whitebackgroundtest.jpg
Whitebackgroundtest.jpg640Ă—480 9.34 KB

TEst_White_background.zip (22.7 KB)

16

I have never gotten this to work; I don’t think it has ever worked.

17

Turning the vrayLight dome to “full dome” solve the issues.
If full Dome is not checked, the dome will always be visible in the background whatever I tried. I don’t understand why, but from my test, it is how vray works.

18

Taking future the test, I confirmed the following:
- The vraylight must be “Full Dome”
- 3Dsmax environment must have a Vraycolor map with RGB multiplier set very high (I put 10 this this camera setup).
- uncheck affect background in the color mapping rollout

In this test scene, I found the following irrelevant:
- GI environment doesn’t have to be turn on (with or without give exactly the same floating value on the background).
- Vignetting on or off, doesn’t affect the color background value
- White balance color doesn’t affect the color background value

So no need to mess around with all this parameters to get a white background.

19

You can do it this way as well: http://www.workshop.mintviz.com/tutorials/v-ray-hdri-studio-with-a-white-reflective-floor/ Also remember to turn off affect alpha in the dome light.

20

thanks, the double Dome light save my issues of getting ride of the HDRI reflexion on the plane.
Thanks