odd transparency

Hi

When I use a map on my plane and set it to enviroment/screen and place a box on top of it, and then render it, it seems so if the box get a litle bit transparent, and shows the map diffused,
In this case the tree top is shown on the box, the same place it would be seen on the plane if i deleeted the box.

Does anyone know why… please help on this, i just dont get it

the wiewport

this is the scene with the texture included.
http://www.3dbureau.dk/temp/transtest.zip

we had a similiar problem on our last/current work that using screen to do some “shops” (in a shopping center) it would “imprint” part of the map. it happend when we forgot to changed the map of or shop_layer for a given camera.

i’m not following you… :?

what i think is that while using screen mapping when calculating gi, it seems it ignores the boundaries of object, and uses the “screen” has an object. i would give a cleary example but my images are confidential right now, because of an NDA.

(edit) totally forgot, i don’t believe its transparency.

Well i did a quick test and it seems to be a “bug” maybe in the gi handling th screen mapping.

maybe valdo can shed some light into this.

another test this time with the the matte option (this was what happen in our project).

yes thats exactly my problem, i foun out that if i right click on the plane and sellect Vray properties, and then turn down the “generate gi” or shuts it of, then there is no problem, but of cause i want to use the ground gi, typical. :lol: :lol:

Hi Ark_3D,

I think that you can’t use environmental screen to map geometry. It’s supposed to be used only on backgrounds. That’s why you’re having “transparency” problem.

Zoran

well i did a test with mr and it happens the same with gi on. with it off it renders ok. an option would be using “camera map per pixel” map. but i must change to default scanline before setting the to this map or max will crash (or at least it what happens to me), after that i can switch back to vray.