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Glass objects modeled in 3DS Max for use in Adobe Photoshop
seanb 
7/2/08 9:41:04 PM
Serf
We are in the process of building an application for which we need to create 3 dimensional glass objects. Once rendered, we need to edit the object further in Adobe Photoshop before using it in Adobe Flash.

Our problem is that if we use materials we have been advised to use based on tutorials we've been focusing on, the glass object does not appear transparent in Photoshop. In Photoshop you actually see the Diffuse color as a solid color in the image. The only way we have sort of gotten this to work is, once opening the tga file in Photoshop we play with the color range to create the effect of transparency.

We need to render glass objects in 3DS Max that have the look of proper glass, that we can see as transparent in Photoshop.

Any guidance and/or advice would be much appreciated.

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devoid 
7/2/08 9:52:09 PM
Guru

Save your render as a .png in Max and make sure Alpha Channel is selected in the box that pops up. It will preserve the transparency in the scene as long as there is nothing rendered behind it.

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Theirs is no ordinary life they have a secret, By day they are normal but by night things change,
They hot up, they go a bit wild, they get lost in dreams and fantasies, Its like being in a film and living the soundtrack, The music does it, The music.

seanb 
7/2/08 10:36:00 PM
Serf
Naturally, in order to create the glass object containing reflection so that it appears realistic, light has to reflect off something, so what we have been doing is to use a checkered base, which produces a really nice glass effect. When you say, "...as long as there is nothing rendered behind it", what exactly are you referring to? We need to produce a realistic glass effect, hence with a bit of glare or reflection visible.

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superfireydave 
7/2/08 11:23:01 PM
Guru

Glare and reflection aren't based on what is behind the glass - but what is infront of the glass.
Set up lights etc.

Devoid is talking about exporting the rendered file to a png so the opacity of the glass remains, and you can import it and use it over something in photoshop.

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Mreow?

devoid 
8/2/08 8:58:38 AM
Guru

if you are wanting to have reflection and refraction running nicely run a HDRI Environmental map, this will also put some realistic colouring into the scene.

What I was talking about was specifically for transparency output, Max considers the environment as transparent, any object in the scene will be included in the alpha, If you insist in having a ground plane in the scene but don't want it in the output to photoshop, make two renders, 1 with the complete scene, the other just with the glass object, when in the render dialogue select [render elements] and add Alpha, this will output another image with just the scene alpha, save this as a tiff or jpg and add it to the first rendered scene in photoshop as an alpha mask.

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Theirs is no ordinary life they have a secret, By day they are normal but by night things change,
They hot up, they go a bit wild, they get lost in dreams and fantasies, Its like being in a film and living the soundtrack, The music does it, The music.

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