Material preview scene bump map on base

Psychotron80 · Post by **Psychotron80** » Thu Jan 15, 2009 8:46 am

Hi everybody,
I have the feeling that when I generate the standard Indigo material preview scene with Blendigo (using the preview button next to the material) the resulting model misses the bump mapping on the base.

See for example:
http://www.indigorenderer.com/joomla/co ... 8/full.jpg
or
http://www.indigorenderer.com/joomla/co ... 2/full.jpg

Anybody noticed this already? Is this normal/wanted?

Thanks,

Psy

PS: using Blender 2.48a, Indigo 1.1.15, Blendigo 1.1.14

Borgleader · Post by **Borgleader** » Thu Jan 15, 2009 9:14 am

material settings please?

Psychotron80 · Post by **Psychotron80** » Thu Jan 15, 2009 9:17 am

I don't have my own example at the moment (I should dig into some tests I made somewhere...), but you can look at the examples I linked from the matDB. Do you agree that the bump seems missing from the base?

Borgleader · Post by **Borgleader** » Thu Jan 15, 2009 9:20 am

it might be uniform lighting.

Psychotron80 · Post by **Psychotron80** » Thu Jan 15, 2009 9:40 am

updated the links to the examples...

Borgleader · Post by **Borgleader** » Thu Jan 15, 2009 10:34 am

actually no i think its there. notice how on the bottom left part of the sphere the cracks arent as dark as on the top right part of it?

and well for the second one the bump is a lot lower so...hard to say

Psychotron80 · Post by **Psychotron80** » Thu Jan 15, 2009 9:53 pm

I am not sure...especially the bricks look so different on the base

sooner or later I will check this out on a test-material where the bump is clear and strong...

CTZn · Post by **CTZn** » Fri Jan 16, 2009 1:07 pm

If you look closer you see that the tiles are larger on the base, for the same bump value; bump has then to look weaker there, proportionally to the ratio between features size on both objects.

Psychotron80 · Post by **Psychotron80** » Mon Feb 23, 2009 12:03 am

hey guys....I still think I'm right about this problem...

This is just a low exponent Al.nk with a simple jpg bump map.

what do you think? I really can't see any sign of the bump on the base.....

Post by **fused** » Mon Feb 23, 2009 12:33 am

this is a known issue and somewhat "normal"(it-has-always-been-like-that normal

).

displacement wont work either. no idea why. but if you find out, please let us know!

Psychotron80 · Post by **Psychotron80** » Mon Feb 23, 2009 1:07 am

thanks fused.

however, more strange: if i increase the B by a factor of 10 (0.01->0.1) this is what I get.

so the bump is there, it just seems "less"!

CTZn · Post by **CTZn** » Mon Feb 23, 2009 5:50 am

Yeah it was readily visible in the previous pic

So this is an official issue

? Did you guys try no normalize... normals ? They are certainly multiplying the B value, the base and sphere must have different normal lenghts I bet.

Psychotron80 · Post by **Psychotron80** » Mon Feb 23, 2009 7:20 am

CTZn...how do you normalize normals..? notice that I made these previews just by hitting the "Preview" button in Blendigo.

Kram1032 · Post by **Kram1032** » Mon Feb 23, 2009 7:23 am

basically, the exxporter should do that for you I think..... though in this case, it's a fixed external model which might not take that into account...

So, someone gotta reexport it or something..............

Psychotron80 · Post by **Psychotron80** » Mon Feb 23, 2009 9:47 am

and who's the one? Smartden or Ono? I would do it if I knew what to do....

Material preview scene bump map on base

Material preview scene bump map on base

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