Chaos Corona Forum

General Category => Gallery => Work in Progress/Tests => Topic started by: bouhmidage on 2014-03-09, 13:53:38

Title: Curtain texture
Post by: bouhmidage on 2014-03-09, 13:53:38

light doesn't pass through the curtain , ( no sun light on the ground ) any help please ?? i used diffuse map as translucent map too.

Title: Re: Curtain texture
Post by: maru on 2014-03-09, 14:24:48

Are you sure it doesn't? :)

Title: Re: Curtain texture
Post by: bouhmidage on 2014-03-09, 16:15:45

no direct sun light

Title: Re: Curtain texture
Post by: Snikon on 2014-03-10, 05:12:35

show a screenshot material tulle , tulle material must be :
(http://f16.ifotki.info/org/ef523ce20e7a19e16371eb5c045be1e5591c6c177084767.jpg) (http://i-fotki.info/)

Title: Re: Curtain texture
Post by: Tanakov on 2014-03-10, 10:33:32

Why would you go up to 240 oO?

I thought that this is a bit too bright white for proper rendering.

I try not to go higher than 190 max 210

Title: Re: Curtain texture
Post by: maru on 2014-03-10, 10:55:40

Quote from: Tanakov on 2014-03-10, 10:33:32

Why would you go up to 240 oO?

I thought that this is a bit too bright white for proper rendering.

I try not to go higher than 190 max 210

But he has diffuse level at 0,8 so it makes it 192.

Bouhmidage, I'd suggest putting solid grey material on all objects except your curtain, deleting skylight, and seeing if the sunlight really doesn't pass through. Can you post the scene?

Title: Re: Curtain texture
Post by: romullus on 2014-03-10, 11:22:16

Correct me if i'm wrong, but afaik, materials doesn't pass light through, unless opacity and/or refraction slots have other values than zero.

Title: Re: Curtain texture
Post by: maru on 2014-03-10, 12:03:10

I think translucency should also "transmit" light to the other side.

Title: Re: Curtain texture
Post by: Ludvik Koutny on 2014-03-10, 12:21:35

Quote from: maru on 2014-03-10, 12:03:10

I think translucency should also "transmit" light to the other side.

It does, but it does uniform diffuse scattering, so it will scatter light to all directions when passing through, and light rays from sun will not maintain their original direction then. So you can use either opacity optionally mapped by texture of fabric, or refraction with mode set to twosided and refraction color optionally mapped by texture of fabric :)

Title: Re: Curtain texture
Post by: maru on 2014-03-10, 12:30:33

Quote from: Rawalanche on 2014-03-10, 12:21:35

Quote from: maru on 2014-03-10, 12:03:10

I think translucency should also "transmit" light to the other side.

It does, but it does uniform diffuse scattering, so it will scatter light to all directions when passing through, and light rays from sun will not maintain their original direction then.

That's why I wrote "transmit", not "pass". :)
I think this is the case why this thread's author has doubts about his material "passing" light through.

Quote

So you can use either opacity optionally mapped by texture of fabric, or refraction with mode set to twosided and refraction color optionally mapped by texture of fabric :)

Using refraction colour mapped with fabric texture might produce strange results when using reflectivity (transparent areas will be still reflective). But it probably won't be visible anyway.