[Bf-cycles] Corona "Render Map" equivalent in Cycles Blender

[Adam Preisler]

Hi Guido,

texture maps should usually be square mostly when you want to use the Box
projection method for textures to have generated mapping. Otherwise they
don't need to be square although it is mostly best just to keep
consistency.

On a side note, if the texture dimensions are both power of 2 that helps
with mipmapping so I suppose eevee might benefit. Also, although I'm not
sure here 100%, GPUs are optimized to process images with dimensions that
are power of 2.

When it comes to the plane with reset UV, the aspect ratio of that mesh
should not play any role in the baking process. I think it's more important
to have the output image that you bake into be the right size. Like when
baking a horizontal texture, then instead of creating 1024x1024 you create
a 1024x256 for example.

Adam

On Fri, Aug 3, 2018 at 9:51 AM Guido Medici <guido.medici89 at gmail.com>
wrote:

> Hi Adam,
> thank you so much for your reply, actually, I had thought at Baking
> option, but I had not thought about this solution, It's pretty clever use a
> simple plane to extract the final composed image.
> Do you think that it would be better to have all the maps be square?
> Otherwise might turn out some stretching issues.
> Yes, I agree with you, it would be great to have this feature embed in the
> node editor like in Corona, but I understand that would be pretty complex
> to implement it.
>
>
> *Guido*
>
> *.......................................*
> *GUIDO MEDICI*
> Via Nino Cattozzo, 50, 45011 Adria (Ro)
> guido.medici89 at gmail.com
> http://www.behance.net/Guido_Medici
> P.I. 01488300292
>
> *.......................................*
>
> Ai sensi del D.Lgs. 19603, le informazioni e le immagini contenute nel
> presente messaggio e negli eventuali allegati sono da considerarsi
> esclusivamente e strettamente riservati. Il destinatario è l’unico
> autorizzato a leggerlo, usarlo, copiarlo e sotto la propria responsabilità
> diffonderlo. A chi dovesse indebitamente pervenire si notifica che è
> proibito qualsiasi uso, copia, distribuzione e divulgazione di quanto in
> esso contenuto (art. 616 c.p.). Qualora questa comunicazione fosse stata
> ricevuta per errore, vi invitiamo cortesemente a darcene notizia ed a
> provvedere alla distruzione del messaggio.
>
> 2018-08-02 21:59 GMT+02:00 Adam Preisler <adam at preisler.me>:
>
>> Hi Guido,
>>
>> you could accomplish the same with baking. Although it takes a couple of
>> seconds to setup, you can do it for multiple different materials after
>> that. Just make a plane with reset UV and change the material of that
>> object. After baking just save that image and then overwrite the bake
>> result with a different image.
>>
>> While I think it's useful to get features like this right in the node
>> editor, the workload right now is far too much to make this reasonable to
>> implement. Also this could be related to everything nodes and node preview
>> later on.
>>
>> Adam
>>
>> On Thu, Aug 2, 2018 at 5:21 PM Guido Medici <guido.medici89 at gmail.com>
>> wrote:
>>
>>> Hi everyone,
>>> I was wondering if there is a way to do what Adam Martin does in corona
>>> during this tutorial ( https://www.youtube.com/watch?v=lEj8MjaVOvk ) ,
>>> I'm referring especially to minutes 49, where he extrapolates the maps
>>> resulted from the different maps mixed in node group.
>>> I think that this could be a clever way to compress all different maps
>>> to save some memory in the final render.
>>> I don't know if there is a way that I ignore or if there isn't a feature
>>> like this in cycles.
>>> I searched for a while in the web but I didn't find anything.
>>> So here I am, is there anyone that can answer me.
>>>
>>> Thank you so much,
>>> *Guido*
>>>
>>> *.......................................*
>>> *GUIDO MEDICI*
>>> Via Nino Cattozzo, 50, 45011 Adria (Ro)
>>> guido.medici89 at gmail.com
>>> http://www.behance.net/Guido_Medici
>>> P.I. 01488300292
>>>
>>> *.......................................*
>>>
>>> Ai sensi del D.Lgs. 19603, le informazioni e le immagini contenute nel
>>> presente messaggio e negli eventuali allegati sono da considerarsi
>>> esclusivamente e strettamente riservati. Il destinatario è l’unico
>>> autorizzato a leggerlo, usarlo, copiarlo e sotto la propria responsabilità
>>> diffonderlo. A chi dovesse indebitamente pervenire si notifica che è
>>> proibito qualsiasi uso, copia, distribuzione e divulgazione di quanto in
>>> esso contenuto (art. 616 c.p.). Qualora questa comunicazione fosse stata
>>> ricevuta per errore, vi invitiamo cortesemente a darcene notizia ed a
>>> provvedere alla distruzione del messaggio.
>>> _______________________________________________
>>> Bf-cycles mailing list
>>> Bf-cycles at blender.org
>>> https://lists.blender.org/mailman/listinfo/bf-cycles
>>>
>>
>>
>> --
>> Adam Preisler
>> 3D & 2D Graphics
>> +44 7706 918 919
>> London
>>
>> _______________________________________________
>> Bf-cycles mailing list
>> Bf-cycles at blender.org
>> https://lists.blender.org/mailman/listinfo/bf-cycles
>>
>>
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-- 
Adam Preisler
3D & 2D Graphics
+44 7706 918 919
London
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