[Bf-committers] bump mapping - white is down & black is up???

"Martin Bürbaum" martin.buerbaum at gmx.at
Fri Feb 25 21:36:09 CET 2011

> On Thu, Feb 24, 2011 at 10:03 PM, Morten Mikkelsen <mikkelsen7 at gmail.com> wrote:
> > So as you guys most likely know white means down and black means up when
> > bump mapping in Blender
> > which is kinda counter intuitive.
> Is there a 'standard' - ie does every other 3d animation package use
> the inverse of what we currently use?
> LetterRip

My comment about this from IRC summarised:
As far as I've seen most of the time black means valley/crevice and white means peak when it comes to bump-mapping.
See a simple example (orange sphere) here: http://en.wikipedia.org/wiki/Bump_mapping
Everything else feels kinda "unnatural". i.e. I myself just can't think of light=valleys & dark=peaks :-D

That said: I've never seen any application that would assume white=valley.
Though I admit that I certainly can not cover a lot of them.
If there are any I guess somebody will bring it up :-)

Just my 2 euro cent.


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