and 32 for "bulge" maps for glass and very reflective materialszeitmeister wrote:... and remember to use 16bit bump maps...
Canon 5D Mk II - Maya to Indigo
Re: Canon 5D Mk II - Maya to Indigo
- zeitmeister
- Posts: 2010
- Joined: Tue Apr 22, 2008 4:11 am
- Location: Limburg/Lahn, Germany
- Contact:
Re: Canon 5D Mk II - Maya to Indigo
Yes!
Cheers, David
DAVIDGUDELIUS // 3D.PORTFOLIO
·
Indigo 4.4.15 | Indigo for C4D 4.4.13.1 | C4D R23 | Mac OS X 10.13.6 | Windows 10 Professional x64
DAVIDGUDELIUS // 3D.PORTFOLIO
·
Indigo 4.4.15 | Indigo for C4D 4.4.13.1 | C4D R23 | Mac OS X 10.13.6 | Windows 10 Professional x64
Re: Canon 5D Mk II - Maya to Indigo
Ehi guys: I'm starting to learn something new here!zeitmeister wrote:... and remember to use 16bit bump maps...
Could one of you pros explain a little further this issue of 8,16 and 32 bits bump maps?
Could be useful to do a tut about this: I will do, if I undestand correctly
Re: Canon 5D Mk II - Maya to Indigo
@ Lemo: Can it be overlapping UVs ? Seems to me that redoing UVs fixed the gripL shape in instanceBug.
To all non MtI users: Are overlapping UVs and/or exposed map borders an issue when using bump mapping in Indigo ? I'm a bit lost as to where the issue might be really. Thanks.
- - - -
Okay Pibuz, you want a MOTD right ? (mess of the day) Let's jump with me !
A grayscale map is an image with a single component. The bit depth of that component tells us how many steps can be encoded between its minimum value and its maximum value. If the bit depth is low, or the contrast of the texture very low too, this may result in a stepped effect where a smooth transition was expected instead.
Using an higher image depth is turning steps much smaller, and the result looks smoother as expected.
Btw: a one bit map is a map wich says black or white, no more (2 values).
For decades 8bits components textures are the vast majority because the way they convoy color is satisfying for the eye. They become limited when they are used for height data. 2x2x2x2x2x2x2x2 = 256 steps from black to white, not much.
16 bits components are more comfortable: 2x2x2x2x2x2x2x2x2x2x2x2x2x2x2x2 = 65 536 steps.
Okay, the next number is 16 777 216 steps iirc (32 bits channel).
Hell, all in one I'm confused between components and images depths. RGBA would be 4x32bits right ? Let's ask someone else
To all non MtI users: Are overlapping UVs and/or exposed map borders an issue when using bump mapping in Indigo ? I'm a bit lost as to where the issue might be really. Thanks.
- - - -
Okay Pibuz, you want a MOTD right ? (mess of the day) Let's jump with me !
A grayscale map is an image with a single component. The bit depth of that component tells us how many steps can be encoded between its minimum value and its maximum value. If the bit depth is low, or the contrast of the texture very low too, this may result in a stepped effect where a smooth transition was expected instead.
Using an higher image depth is turning steps much smaller, and the result looks smoother as expected.
Btw: a one bit map is a map wich says black or white, no more (2 values).
For decades 8bits components textures are the vast majority because the way they convoy color is satisfying for the eye. They become limited when they are used for height data. 2x2x2x2x2x2x2x2 = 256 steps from black to white, not much.
16 bits components are more comfortable: 2x2x2x2x2x2x2x2x2x2x2x2x2x2x2x2 = 65 536 steps.
Okay, the next number is 16 777 216 steps iirc (32 bits channel).
Hell, all in one I'm confused between components and images depths. RGBA would be 4x32bits right ? Let's ask someone else
obsolete asset
Re: Canon 5D Mk II - Maya to Indigo
Very interesting stuff guys, thx
CTZn I'll answer your pm
CTZn I'll answer your pm
Re: Canon 5D Mk II - Maya to Indigo
It seems to me that using map with more than 16 bit depth is overkill, unless you're using absurdly huge maps... The difference between adjacent pixels is all that matters, and you'll more probably run out of pixels than shades of gray.CTZn wrote:@ Lemo: Can it be overlapping UVs ? Seems to me that redoing UVs fixed the gripL shape in instanceBug.
To all non MtI users: Are overlapping UVs and/or exposed map borders an issue when using bump mapping in Indigo ? I'm a bit lost as to where the issue might be really. Thanks.
- - - -
Okay Pibuz, you want a MOTD right ? (mess of the day) Let's jump with me !
A grayscale map is an image with a single component. The bit depth of that component tells us how many steps can be encoded between its minimum value and its maximum value. If the bit depth is low, or the contrast of the texture very low too, this may result in a stepped effect where a smooth transition was expected instead.
Using an higher image depth is turning steps much smaller, and the result looks smoother as expected.
Btw: a one bit map is a map wich says black or white, no more (2 values).
For decades 8bits components textures are the vast majority because the way they convoy color is satisfying for the eye. They become limited when they are used for height data. 2x2x2x2x2x2x2x2 = 256 steps from black to white, not much.
16 bits components are more comfortable: 2x2x2x2x2x2x2x2x2x2x2x2x2x2x2x2 = 65 536 steps.
Okay, the next number is 16 777 216 steps iirc (32 bits channel).
Hell, all in one I'm confused between components and images depths. RGBA would be 4x32bits right ? Let's ask someone else
The confusion with RGBA images comes from the fact that sometimes people call 8 bit RGBA images 32 bit images, while actually it's 4x8bits. 32 bit RGBA image has 128 bits of information per pixel.
-
- Posts: 1828
- Joined: Mon Sep 04, 2006 3:33 pm
Re: Canon 5D Mk II - Maya to Indigo
I'd sooner hope for the option to interpolate pixel values in an 8-bit image than having to convert all my 8-bit bump maps to 16-bit... Just one less thing to think about. I thought Indigo already had some sort of texture interpolation, but I suppose not...
Re: Canon 5D Mk II - Maya to Indigo
Thanks for the clarifications Silma !
I don't know for sure StompinTom, but I suppose not, as well.
End of UVs panic: a view-dependent subdivision of width 14px was used, as it is the default Maya value. A very coarse setting, messing with the resulting UVs in Indigo 2.6.1.
I'm waiting for Lemo's confirmation but am pretty optimistic ! edit: confirmed
I don't know for sure StompinTom, but I suppose not, as well.
End of UVs panic: a view-dependent subdivision of width 14px was used, as it is the default Maya value. A very coarse setting, messing with the resulting UVs in Indigo 2.6.1.
I'm waiting for Lemo's confirmation but am pretty optimistic ! edit: confirmed
Last edited by CTZn on Sun Dec 19, 2010 7:27 am, edited 1 time in total.
obsolete asset
Re: Canon 5D Mk II - Maya to Indigo
Some new stuff
I'll probably come back to that later with better subdivs and bump
Right now I just feel like trying more archviz with MtI
I'll probably come back to that later with better subdivs and bump
Right now I just feel like trying more archviz with MtI
Last edited by Lemo on Thu Feb 10, 2011 8:07 am, edited 1 time in total.
Re: Canon 5D Mk II - Maya to Indigo
Cool Lemo. "Patience is..." ... oh, I forgot ;|Lemo wrote:Some new stuff
I'll probably come back to that later with better subdivs and bump
Right now I just feel like trying more archviz with MtI
Do not rely on instanced groups tho, that's an OBJ-stopper. You can group instances...
obsolete asset
Re: Canon 5D Mk II - Maya to Indigo
Wow, those last renders are spectacular. A really great level of detail in that model. Only one small and unimportant crit and that is that, technically, there is a solid metal chassis under the rubber and plastic molding. That crit only really has any application in this render. Besides that useless niggle, great work! Been watching this progress nicely
Re: Canon 5D Mk II - Maya to Indigo
Super! It makes me inspect every detail
- Doug Armand
- Posts: 1038
- Joined: Fri May 16, 2008 5:49 pm
- Location: London UK
Re: Canon 5D Mk II - Maya to Indigo
Agree with others - very impressive modelling and texturing. Excellent
Doug
Doug Armand
Doug Armand
Who is online
Users browsing this forum: No registered users and 77 guests