Aram Azhari
Posts: 17 |
Hi.
I'm trying to write a shader in a game engine to support the AO maps generated by filter forge. This is actually a technical question from the FF developers. What is the relation that I should use to apply the AO on the texture? Currently I'm multiplying the texture with the AO, but it gives me a very dark texture which does not resemble the preview in the FF software. What is the best way to combine them? Thank you. ___________
Aram Azhari |
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| Posted: June 5, 2012 12:43 am | ||||
Skybase
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You're doing it perfectly fine by multiplying it. What you probably will need to do is to edit the AO so it's not so dark, you can use Photoshop and just adjust some levels till you get something satisfying. You may also decrease the mix (opacity) between the AO and the texture.
AO maps in filterforge can be manipulated by tweaking the AO settings. (see some picts here http://www.filterforge.com/features/v...sion.html) |
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| Posted: June 5, 2012 1:05 am | ||||
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Aram Azhari
Posts: 17 |
Thank you for the explanation.
The link however, doesn't work. It seems it looks brighter when I do it in photoshop (multiply overlay). But in the shader (CGSL) it makes it so dark that the colors almost look black and white. ___________
Aram Azhari |
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| Posted: June 5, 2012 1:12 am | ||||
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Skybase
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Sorry D: http://www.filterforge.com/features/v...usion.html
Hmmm... That sounds like a problem with the shader setup. Would need to see the settings for further diagnosis.... I mean, the other thing you can do is just export it out with the AO already on the diffuse layer instead of mixing it in the shader as a pass if that works for you.... |
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| Posted: June 5, 2012 1:24 am | ||||
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Aram Azhari
Posts: 17 |
Actually that is not a bad idea.
btw, here is the Cg code:
___________
Aram Azhari |
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| Posted: June 5, 2012 1:36 am | ||||
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Aram Azhari
Posts: 17 |
And how can I export the AO on the diffuse?
If I choose diffuse from the render maps menu it won't apply the AO. And If I choose the 'Off' thingy, then it will also apply the normals and the bump and all other maps which I need to apply them later for real-time rendering interactions. ___________
Aram Azhari |
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| Posted: June 5, 2012 1:42 am | ||||
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Skybase
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.. strange... in my head it works. Did .a indicate alpha or a black and white map input? (ancient memories arise!)
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| Posted: June 5, 2012 1:49 am | ||||
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Aram Azhari
Posts: 17 |
Yes .a is alpha, btuactually , I have created the alpha from the greyscale of the map.
So I'm simply using the alpha channel to pass the greyscale color (black and white map). ___________
Aram Azhari |
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| Posted: June 5, 2012 1:54 am | ||||
uberzev
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spam
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| Posted: July 14, 2012 5:22 am | ||||
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Aram Azhari
Posts: 17 |
What do you mean?
Which tutorial? ___________
Aram Azhari |
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| Posted: July 14, 2012 5:22 am | ||||
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Aram Azhari
Posts: 17 |
You're right uberzev, it is totally spam.
Is there an spam report? ___________
Aram Azhari |
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| Posted: July 14, 2012 5:24 am | ||||
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