Newbie_problem with trees

decumano

Hi to everybody,
I'm a newbie and my english is not so fluent, so sorry if I'm wrong

I started using SU during this autumn and now I need to make some render. I tried to resolve the problem that you can see in this picture, reading forums (in my language) but I didn't find the answer.

So, can you explain why the trees on the right have white parts around leaves?
I hope this topic is not in a wrong forum. Thank you so much for your attention.

ps I know there are other mistakes on the render, this is a work in progress.

leaves

Krisidious

you need to change the leaf texture to a .png format and make the surrounding white area on the leaf transparent.

decumano

thanks for the answer... I tried to do what you say but this is what I found

As you can see it's already .png with white space below..

Where i'm wrong?

Krisidious

when you save it you're using save for web instead of just save as. save for web will write in the back white. try just using save as and choosing png.

Chris Fullmer

What renderer are you using?

decumano

No, for sure, I saved in .png format. I really don't know why this is the result

I'm using the Vray for sketchup

Krisidious

are they transparent in SketchUp before rendering in Vray? or are they white in SketchUp.

Gaieus

I am not sure about the current version of V-ray but I remember you need(ed?) to use clip masks there as it can (could?) not use png transparency.

A clip map ios a purely black and white version of your image where the visible parts are white and the invisible ("to-be") transparent parts are black.

decumano

For krisidious:

Yes, they are transparent before, 2 samples i did right now

For gaieus:

i know nothing about clip masks. This evening i will search on the web about it.
You said "purely black and white version of your image" i think you are talking about the single .png image of the leaf that i posted above

Thanks for the advices

Krisidious

I'm afraid this is going to be a VRay issue and I'm not going to be able to help.

decumano

@gaieus said:

I am not sure about the current version of V-ray but I remember you need(ed?) to use clip masks there as it can (could?) not use png transparency.

A clip map ios a purely black and white version of your image where the visible parts are white and the invisible ("to-be") transparent parts are black.

Yes, it works! I just used a black and white version in the "transparency" section.

Thanks

Gaieus

neshxy

In v-ray materials under diffuse just click on "Use color texture as transparency" and click preview of material. It should be transparent now if u are using png.