[Bf-committers] Re: parallaxmap error

[Matt Ebb]

I wanted to try the patch, but it looks like, your server is having 
issues, Martin :/

On 18 Dec 2004, at 8:28 AM, Alexander Ewering wrote:
> On Fri, 17 Dec 2004, car wrote:
>> coming from my understanding without code knowledge is that it makes 
>> the textured mesh look like it's mesh was displaced with a texture 
>> for every fine detail and crack on it and even changes it's shadows 
>> against the lighting on
>
> No, it definitely doesn't produce shadows.

Actually, while this is not parallax mapping, there are ways of faking 
self-shadowing with bump maps (not that I know how), with a technique 
called horizon mapping. Here are some links:
http://www.balmelli.net/download/eg01.pdf
http://research.microsoft.com/~ppsloan/bs.pdf
http://www.humus.ca/index.php?page=3D&ID=38

> Am Freitag, 17. Dezember 2004 21:51 schrieb Chris Burt:
>> Also, your comments about normal maps being like bump mapping don't 
>> seem
>> to be accurate from my tests... They look totally different.
>
> Haven't yet tested the CVS and normal maps, but in *theory* normal 
> maps and
> bump maps should lead to equivalent results...

I don't know the theory, but at least in *practice* they're very 
different ;) I presume a lot it is to do with how the map is generated 
- normal maps aren't something you easily paint by hand.

Cheers,

Matt
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