 | | | Render-to-texture between two projections | Render-to-texture between two projections 2005-03-01 - By Matthias Worch
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Without having gone through all of your explanations/suggestions
(thanks!) yet, here's another explanation for clarity:
Imagine an object with two different UV layouts/projections. A texture
artist did a color map for UV layout A. Now for whatever reason (I
have a good one, but it's complicated) I need to use UV layout B
instead, but the color map was made for A and doesn't match that
contours of B. I really don't want to refit the texture in Photoshop
as it's time-consuming and not exact - instead I want to render out
the new color map by putting both projections on the same object and
transferring the pixels from A to B.
I've been using this workflow quite a bit in Maya, but now I'm looking
for a way to make it happen in XSI.
--
Matthias Worch
http://www.langsuyar.com
p> perhaps try to explain why you want to do this / what you are after to
p> achieve.
p> I do have the feeling that you want to assign your material with the
p> original texture, and corresponding projection to the object, rendermap this
p> to another texture, using a second projection, and then assigning this to
p> the object to see the result. If so, a good method is making a second pass,
p> assigning an override material to the pass, and assign the texture on that.
p> So you can switch to the original pass and see the object with the original
p> texture, and then switch to another pass and see the object with the
p> rendermapped texture.
>> Sorry for abusing the list as my personal RTFM replacement today.
>>
>> How do you apply a separate material to each texture projection? It's
>> one of the areas I haven't delved into yet. I can open the material
>> and "Use specific Image/UV pair" to tell each material which
>> projection to use, but whenever I assign a material to a mesh it
>> overrides the other one. I want both to be assigned to the same mesh.
>>
>> I don't think I should/could use texture cluster here as I want both
>> materials assigned to the entire mesh. I just want each to use a
>> different UV set.
>>
>> --
>> Matthias
>>
>> p> thats what rendermap is for?
>> p> assign your texture with the first uv set and a constant material
>> p> rendermap to the second UV set.
>> p> unless I missed something in your question?
>>
>>
>> >> As an alternative to the last question (trying to bring an object into
>> >> Maya to do this workstep), is there an XSI way to render to texture
>> >> between two projections? I want to give the renderer a source UV set
>> >> and a target UV set and have it render an existing texture from the
>> >> old UVs to the new UVs. Maya does this (AFAIK) using mray, I'd love to
>> >> do this right in XSI.
>>
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