BUMP MAP/PHYSICAL SUN

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# 1 05-05-2010 , 10:33 PM

Head of 3d Admedia
Join Date: May 2007

Location: nairobi , ken-ya

Posts: 1,340

HI all
i have this image with bump map lines on it and it renders fine on default lighting
left image but when i add physical sun and sky this happens...can anyone pls tell me what im doing wrong

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# 2 06-05-2010 , 07:13 AM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

did you correct the gamma on the texture? perhaps its just washed out.

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# 3 06-05-2010 , 07:57 AM

Head of 3d Admedia
Join Date: May 2007

Location: nairobi , ken-ya

Posts: 1,340

havent done that i thought you only apply gamma correction node to your diffuse maps not bump maps let me try and get back to you

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# 4 06-05-2010 , 11:31 AM

The Nurb Herd
Join Date: Oct 2007

Location: London

Posts: 2,381

well you could just change the gamma in the framebuffer to 0.4545 and set the gamma of the sun and sky to 1... that might work.

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# 5 06-05-2010 , 02:45 PM

Super Moderator
Join Date: Dec 2006

Location: South FL

Posts: 3,522

No need to gamma correct bump maps as they don't feed info into any color channels. I think the problem on the underside is stemming from the ambient lighting, if whatever is beneath it is light colored then I can see that happening when it throws its color onto the balloon.

- Genny
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