09 September 2012 | |
![]() |
|
Veteran
Quentin Bellow
Brooklyn,
USA
|
render uv pass of an objects reflection
Hello,
I know how to render a uvw pass from the multi pass window, but what if said object is reflecting in a ground. Is there a way to get its reflections uv map in a multipass render? Thanks! __________________
Don't miss your chance to experience 5,000 years of Chinese Culture live on Stage ! http://www.shenyunperformingarts.org |
09 September 2012 | |
![]() |
|
Scholar
Mark Mathieson
3D Artist
GB
|
A while ago I did a test in which I applied gradients, in UV colours, as a shader to an object. Make other objects in the scene 100% reflective and you get a reflected UV map. As I remember you need to save as exr for it to have the precision it needs.
Its hacky but it works. |
09 September 2012 | |
![]() |
|
Veteran
Quentin Bellow
Brooklyn,
USA
|
That sounds promising. Do you recall what hues you used exactly and in what order?
__________________
Don't miss your chance to experience 5,000 years of Chinese Culture live on Stage ! http://www.shenyunperformingarts.org |
09 September 2012 | |
![]() |
|
Scholar
Mark Mathieson
3D Artist
GB
|
I may have the file at work, I'll have a look tomorrow.
If you render the uv pass of a plane you should be able to see what colour values need to go where. Then it's a case of layering up grads in a layer shader, each set to add. |
09 September 2012 | |
![]() |
|
Scholar
Mark Mathieson
3D Artist
GB
|
Place this image in the luminance channel of a shader, image sampling set to none. Make sure whatever is reflecting it is 100% reflective with no fresnel. Save the render as 32bit.
https://dl.dropbox.com/u/9875461/ST...are_Map.tif.zip Good luck! |
10 October 2012 | |
![]() |
|
Veteran
Quentin Bellow
Brooklyn,
USA
|
Thank you very much !
![]() __________________
Don't miss your chance to experience 5,000 years of Chinese Culture live on Stage ! http://www.shenyunperformingarts.org |
10 October 2012 | |
![]() |
|
Expert
|
Thread automatically closed
This thread has been automatically closed as it remained inactive for 12 months. If you wish to continue the discussion, please create a new thread in the appropriate forum.
__________________
CGTalk Policy/Legalities Note that as CGTalk Members, you agree to the terms and conditions of using this website. |
Thread Closed share thread |
«
Previous Thread
|
Next Thread
»
|
|
|