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alpha mapping preview
Posted: Thu Mar 11, 2010 9:57 pm
by radiance
Hi all,
Alpha mapping is implemented.
I'm also adding support to use it off an existing diffuse map, eg being able to bind the alpha channel of a png to the alpha mapping without having to load 2 images.
Tomorrow I will continue work on the bump mapping, which is 50% ready.
This will be in the 2nd beta, amongst more often asked for things.
Radiance
Re: alpha mapping preview
Posted: Thu Mar 11, 2010 10:46 pm
by James
This is fantastic! I can't wait to try this stuf out...
Re: alpha mapping preview
Posted: Thu Mar 11, 2010 11:04 pm
by Janaro666
when will be 2nd beta released?
thx
Re: alpha mapping preview
Posted: Thu Mar 11, 2010 11:20 pm
by n1k
Nice:) Can you tell us will there be large speed impacts when using alot of alpha mapped polys fore leaves?
Re: alpha mapping preview
Posted: Thu Mar 11, 2010 11:31 pm
by radiance
n1k wrote:Nice:) Can you tell us will there be large speed impacts when using alot of alpha mapped polys fore leaves?
No, there is no large speed impact, it's minimal.
2nd beta will be released when it's ready
it won't be long though.
Radiance
Re: alpha mapping preview
Posted: Thu Mar 11, 2010 11:34 pm
by n1k
Great news:) Many raytracers slow down when rendering alpha mapped leaves.
Re: alpha mapping preview
Posted: Thu Mar 11, 2010 11:57 pm
by radiance
n1k wrote:Great news:) Many raytracers slow down when rendering alpha mapped leaves.
most other renders actually implement it like glass,
eg the ray is transmitted through the transparent object.
i implemented it differently, there's no transmittance.
Radiance
Re: alpha mapping preview
Posted: Fri Mar 12, 2010 12:17 am
by MDkai
I like that approach, as it is way more practical. Will bumpmapping also introduce normalmaps, or will this be something for another release ?
Btw great you share that mini milestone
Re: alpha mapping preview
Posted: Fri Mar 12, 2010 12:18 am
by radiance
MDkai wrote:I like that approach, as it is way more practical. Will bumpmapping also introduce normalmaps, or will this be something for another release ?
Btw great you share that mini milestone
i'd like to add bump mapping first, then normal mapping.
i think the majority of users will use bump maps,
as they are easier to make and are omnipresent in texture DBs.
Radiance
Re: alpha mapping preview
Posted: Fri Mar 12, 2010 12:29 am
by MDkai
No hurry, im still exploring octane more and more, and really enjoy it.
Bump maps are indeed essential, as they provide so much great high frequent detail like simple indents, cracks and structures from all kind of materials.
They can spice up a lot with less effort and a low memory print in compare with Nmaps.
looking forward