simple reflectivity question

[supernovavfx]

I have a super simple setup of a floor and a wall with an image on the wall.   I want the image on the wall to reflect down onto the floor which is the easy part.

 

I'm surprised after all these years i never needed to do this, but here is what I'm having trouble seeing if I can do....

 

I want the reflection in the floor to fade out gradually to nothing \ the floors texture....     I've seen this in other software but forgot what they labeled it.

 

I played with some settings that I thought would produce that...   but I figured id give someone here a chance to help me on this.    

 

thanks 

 

Scott

[joseph56]

Some kind of bitmap  image with an alpha in the reflection tab and then turn  down the map  maybe?

 

I found some other stuff(Lightwave stuff) here:

http://books.google.ca/books?id=nLSVKEavyPcC&pg=SA11-PA62&lpg=SA11-PA62&dq=how+to+make+a+reflection+fade+in+3d+program&source=bl&ots=r1aVNkni2c&sig=eBBcYw6FmhjDHAnSKjI5THgCoWw&hl=en&sa=X&ei=ZgG3U6XtJs-lyAST84H4Bg&ved=0CCoQ6AEwBA#v=onepage&q=how%20to%20make%20a%20reflection%20fade%20in%203d%20program&f=false

[supernovavfx]

I actually thought of that... but did not try it yet... I think ill give it a shot, - using a gradient in the reflectivity channel -  if that works it would be great because it would be fast and not much of a render hit.

[Tomas Egger]

Ola Scott,

 

If I understood well, its quite simple, you need only to apply a Ramp texture in the floor as a Reflectivity Map, I used here an AG_Ramp shader in this sample project.

 

Reflex.zip

 

Hope that helps

 

Thanks

 

Tom

 

 

[supernovavfx]

I knew it was simple... for some reason I never put together in my head that a black and white ramp in one tab would affect the overall reflection, bitmaps and all...  like a clipping map does or an alpha channel.

Can I load a bitmap in if I want a stylized reflection... ?

[joseph56]

How would you get the circle reflection to fade out and will it work if there is a texture already on the floor?

[Tomas Egger]

Ola!

The ramp map or ramp shader only works in the attenuation of the reflection in the floor, it will work fine with already applied textures.

This is a simple ramp, you can even build stylized ramps in Photoshop.

Thanks

Tom