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light and material shaders
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  • magizo
  • Posted: 19 February 2009 03:21 AM
  • Total Posts: 5
  • Joined: 18 February 2009 06:39 AM

hi to all
someone would know how to tell me where I can find some lights shaders and material shaders to download? particularly:
light-illumination and light-translucency.
I am trying to realize some white (leaned on a shiny black plan) objects transulucenti and with self-illumination.
I have looked for some tutorials but I have found only for 3d stuio max that with v-ray gives you the possibility to assign “self illumination” to a material.
do you have suggestions to give me?



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not completely sure if thats what you are looking for, but anyway…

take a look at the ‘arch_util.html’ that comes with your xsi installation, and check out ‘[I][I]mia_light_surface[/I][/I]’ - all the other doc´s are pretty nice as well ; )
(located somewhere like C:\Softimage\XSI_7.01_x64\Doc\mental_ray\shaders\architectural)

xsi7 comes with a lot of ‘modern’ stuff like this.



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  • mantom
  • Posted: 19 February 2009 05:48 AM

nevermind.



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  • magizo
  • Posted: 20 February 2009 02:11 AM

hi
in enclosure an example of the result that I would want to get.
how can I work on the material to reach this effect? transparency and translucenza make the object flat...and then as I succeed in doing so that from the object arrives light?



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  • magizo
  • Posted: 20 February 2009 03:15 AM

hi
in enclosure an example of the result that I would want to get.
how can I work on the material to reach this effect? transparency and translucenza make the object flat...and then as I succeed in doing so that from the object arrives light?



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  • mantom
  • Posted: 20 February 2009 10:32 AM

[quote=magizo;19377]hi
in enclosure an example of the result that I would want to get.
how can I work on the material to reach this effect? transparency and translucenza make the object flat...and then as I succeed in doing so that from the object arrives light?


Translucency works, but you have to adjust the falloff of your lights.  It’s all in the manuals.



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  • magizo
  • Posted: 20 February 2009 08:12 PM

HI MANTOM
...i’ve oviusly read the manual and various discussions in different forum.
from what I have understood they exist some shaders that optimize really the fall of of the light in realistic way. the packet calls light tools collection and contains shaders as the lume illumination, lume glare, lume translucency...do you know something?
the image that I have posted yesterday has been realized with 3d studio max...v-ray it allows you to assign the self illumination to the material of an object. how do I do to get the same result with xsi?



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  • sfu_Rork
  • Posted: 20 February 2009 09:36 PM

Hi,

It’s called the Lume tools collection, and the shader set and tutorials can be found here:
http://www.rowu-media.nl/content/web/tutsportal.html

The latest set if for XSI5 but still works for XSI7. Also some of the shaders can be found in the XSI install as well.

rob



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[quote=magizo;19377]hi
in enclosure an example of the result that I would want to get.
how can I work on the material to reach this effect? transparency and translucenza make the object flat...and then as I succeed in doing so that from the object arrives light?

hi magizo
one suggestion to reach this effect:

model lampshade.
place a pointlight inside the lampshade. (enable shadows etc.)
apply e.g. a lambert material to the lampshade.
go to rendertree and get an ‘incidence’ node. connect with ‘translucency’ of lambert.
set incidence to Camera/Lights or Camera/Lights(LightsList). Pick Item > Pointlight.

(You might set the rendering visibility for the lampshade to cast no shadow.)

hope this helps.



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  • magizo
  • Posted: 22 February 2009 11:50 AM

hi to all
I am trying to work with the lume tools and with the suggestions that mauseonmac has given me ...
for the time being I am just testing but to understand how to optimize the lume shaders can bring to interesting results...I hold you adjourned.



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