Vray Render problem

[janverner]

Hi, im using vray now, but i have some isuue :/ I use daylight with vray camera etc. by tutorial on vray.info (Vray daylight tut) but when i render my scene, every texture is black :/

[Boris Horosavin]

Exactly what type of Vray camera and what sort of daylight are you talking about ? You should give as much data as possible to track down the problem. For example, there is Vray physical camera, which is designed mainly for Vray Sun and Vray Sky, but you gotta know how to tune all the parameters right. Any other type of light apart from this two is not very suitable for Vray P. Cam. since it will, by default value be too weak and will render everything dark. Apart from that don't forget to turn on and set up indirect ilumination... But as I said, the more data you give the easier job to find answer.

[janverner]

Thanks for reply. Im using vray physical camera. Everything i do by the tutorial on vray official site - vray.info i mean daylight tutorial… i really dunno what i have to do to solve it :/

 

Here is tutorial ( im doing that by this tut) vray.info/tutorials/vraydaylight/

Edited February 20, 2012 by janverner

[Boris Horosavin]

You could send a pic. In a meanwhile:

1. Do you get the background sky rendered correctly or is everything black? If just objects are black and sky is normal and blue then maybe you accidentally switched off sunlight. Look out for checkbox on the top of your DaylightAssemblyHead menu (the hemispherical Daylight dummy you created), it must be turned on. I don't think this is texture issue since Vray lights are fairly compatible even with Default materials.

2. What is your Daylight dummy sun position? If you created it from top viewport, as suggested in tutorial, maybe it accidentally got stuck on ground level and therefore don't emit light correctly.

3. Did you automatically assign a Vray Sky Map to your sun light? When you choose Vray sun from daylight menu it asks you if you want to do this. If you skipped this one you might get black background and incorrect lighting. If that's the case you will need to manualy add Vray Sky Map or redo the Sunlight procedure.

4. Finally, you can try using Vray sun/Sky without Daylight system. It is not much different except you'll need to set up your own Vray Sky Map, link it with the Vray Sun and drag it to Environment or Vray Environment slot.

Edited February 21, 2012 by Horosavin

[janverner]

Yes, my problem is what you said in your 1. step here is the screen : http://screenshot.cz/6J4V9/

 

But i have vray sun switched on how you said and when it asks if i want to add vray enviroment or what i click everytime yes

[Boris Horosavin]

The way I see it there is some, but very weak light coming into the scene. I think you should either turn up your Sun, or tweak camera settings (f-number & shutter speed primarily). This might happen if you didn't make and edit your object in real life units, but in some abstract, generic units and it turned out to be gigantic which made sun light seem petty.

By the way, did you heck your material editor, are all textures correctly linked to corresponding pics? Based on this preview it seems as if textures on your model are rather blank.

Edited February 21, 2012 by Horosavin

[janverner]

I tried the daylight with other projects, i mean my biped and unbugged figures to cod4 and there is not any problem with render it. So problem is in my project but i really dont know what is wrong with it :/ I can send it to you if you could help me to solve this problem

[Umesh Raut]

Dear Jan,

first and foremost, try rendering the same scene with a normal max camera aligned to this camera's xyz centers (both camera and target) and see if it gives you the expected result; then you start digging with vray p cam's shutter speed (I think 1/20 could be a good starting point), that should put you on the right path forward.

Edited February 22, 2012 by umeshraut

[Boris Horosavin]

Listen, try out with some stuff Umesh and I suggested and if you still can't find solution upload somewhere the scene and I will have a look at it.

[elnaz]

hi

i ' ve a problem in rendering of my file.. i don't konw why it takes long time? my pc is win7,corei7,ram 4G.. but my file that is the livingroom scene took 8 hours to render whereas my file have 37 mb size and just vray sun and some ies.. please help me to reduce my render time at lease one hour