N00b question about tiling bump maps.

Qwaszt · Post by **Qwaszt** » Mon Jan 07, 2008 9:57 am

Thanks Kram1032,

Is there any understandable reason why the above described tiling problem happens with the greyscale png and disappears with the RGB png one?
Or should I just think: it works and dont bother?

Well anyway learned something again

Kram1032 · Post by **Kram1032** » Mon Jan 07, 2008 10:01 am

Yes, very simple:
Indigo doesn't support 8bit Images.
24 or 32 bit work fine

also working are 48 and 64 bit images (actually, 16-bit-per-channel-images, as it else might be misunderstood as HDR images, which are 32-bit-per-channel

)

It's like this:
The image needs to have 3 or 4 channels
One channel needs either 8 or 16 bit depth
The channels either are Red, Green and Blue, or Red, Green, Blue and Alpha (RGB or RGBA)
The Alpha channel gets ignored
The format needs to be supported by Indigo:
png
jpg
bmp
tif (I heard...)
tga (thx dougal)
maybe some others, which are very uncommon

Indigo's images as a background lightsource (HDRi) need to be:
either exr in latlong format
or float in spherical format

Who ever knows it better, feel free to correct me

This should be the *minimum*, Indigo supports. Who ever corrects me, most certainly will only add some stuff, I bet...

Qwaszt · Post by **Qwaszt** » Mon Jan 07, 2008 10:04 am

Again thanks Kram1032

Kram1032 · Post by **Kram1032** » Mon Jan 07, 2008 10:08 am

Also look at my edit

Qwaszt · Post by **Qwaszt** » Mon Jan 07, 2008 10:13 am

Just did,

Always nice to have some theoretical information.

dougal2 · Post by **dougal2** » Mon Jan 07, 2008 10:19 am

I think .tga works fine too.

Kram1032 · Post by **Kram1032** » Mon Jan 07, 2008 10:35 am

ah, yeah, someone tried it...should work, too

pauljohns · Post by **pauljohns** » Fri May 09, 2008 5:38 am

After I had the issue mentioned in this thread, I kinda gave up on messing with 3d for awhile, cause I was bummed that my problem couldn't be resolved. Then I read the post by Qwaszt and the reply by Kram, and I went home, installed the latest stable build of indigo/blendigo, and lo and behold, my issue no longer exists. I had left the image in greyscale the whole time, instead of making a b&w rgb image. SO today, when I get home, I'll have a generic render of a bump map and texture mapped plane with a glass ball on it. Just because I can. I'm very excited to be back and continuing my education with 3d. Thanks everyone!

Kram1032 · Post by **Kram1032** » Fri May 09, 2008 7:47 am

Qwaszt · Post by **Qwaszt** » Fri May 09, 2008 8:06 am

YAY too!

N00b question about tiling bump maps.

I'm back...

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