CGTalk - can any one tell me how to compose shadow pass in photoshop

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mitir

01-08-2009, 02:53 PM

hi its really really stupid to ask but plz can any one tell me how to compose shadow pass with diffuse, specular passes in photoshop since the shadow passes is an alpha as i drag and drop on the layer it go in its alpa can any one plz plz tell me ?

moiremusic

01-09-2009, 04:59 PM

It's a little hard to understand your question, but I think you're trying to combine different rendered passes in Photoshop.

If the shadow pass ends up as an alpha channel, you could create a selection from that alpha channel by highlighting the alpha channel in the Channels palette, then clicking the first button on the bottom of that palette to create a selection out of it. Then create a new layer and fill that selection with black. You may have to invert the selection before filling with black, depending on how things are configured.

mitir

01-09-2009, 06:29 PM

thanx soooooooo much :bounce: yes this is what i m looking 4 yeppeee !! :)

3dj

01-10-2009, 03:51 AM

Don't forget to put the layer in multiply blending mode.

moiremusic

01-10-2009, 04:32 AM

Oh, I completely forgot about that.

mitir

01-10-2009, 01:04 PM

r u sure to put in multply mode becoz i think shadows look more good in darken mode hmmm!! :hmm:

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