MR: shadow pass for just one object ?

[noizFACTORY]

Create a render layer with the table, the box and your lights. Select your box and open up the attribute editor. Under its render stats, uncheck Receive Shadows. Now, the box only casts shadows and doesn't receive any (naturally). In the render layer's attributes select the shadow pass option.
Now you should get what you want (unless I messed up anything). Also, note that if you don't want the table self shadowing itself in the render, then you can switch off its cast shadow attribute and leave the receive shadow on.

[deadalvs]

this is so damn frustrating !!!

it does not work... :banghead: :banghead: :banghead: :banghead: :banghead:

i added the objects with a blinn material (or what type of material should i use ?) and clicked the shadow pass option. it renders NO color and NO alpha. this sucks. period.

what the hell am i doing wrong ...

i have to stop working thru the night.

* * *

but thanks so far !!

[noizFACTORY]

Your shadow pass won't render any colour. But the shadows show up in the alpha. Just check the alpha of your rendered image in fcheck or render view.
And no, it doesn't matter what type of material you use for your shadow pass (obviously, it should be the same as other passes).

[deadalvs]

i have now the shadow working for a directional light. this renders okay. but i also have a mental ray environment IBL (.hdr) that still does not show up in that shadow pass... :(


i have set the stuff to raytracing... do i have to activate the IBL settings a second time for the render settings for the layer to work ?
[edit... no it remembers the created IBL settings...]

strange...

[deadalvs]

i could hug the world !!!

i found it out ...

again i did not turn on final gathering.

now, also the shadow pass gets the «diffuse» shadow of the hdr dome.

let's work on !

*lalaaalala*

[noizFACTORY]

i could hug the world !!!

i found it out ...

again i did not turn on final gathering.

now, also the shadow pass gets the «diffuse» shadow of the hdr dome.

let's work on !

*lalaaalala*
Hey thats great! My bad I didn't pay attention to the fact that you were using IBL (which would have suggested that final gathering was on).
Work away to glory!
*lalaaalala* LOL :)

[deadalvs]

oh man...

sometimes it's so damn frustrating.

like just this minute. just found out that one of my surface shaders that i set to white out color was black again... it just takes so long to finally find stuff like this you thought you set up already so long ago and worked so far. man !

[noizFACTORY]

Haha, just another day at work I guess?

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